SkCanvas.h revision 3cb3840c9af6f70896cf5565a38d4ee03c02d767
18a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com/* 2ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * Copyright 2006 The Android Open Source Project 38a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com * 4ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * Use of this source code is governed by a BSD-style license that can be 5ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * found in the LICENSE file. 68a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 78a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 88a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#ifndef SkCanvas_DEFINED 98a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#define SkCanvas_DEFINED 108a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 118a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkTypes.h" 128a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkBitmap.h" 138a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkDeque.h" 145c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com#include "SkClipStack.h" 158a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkPaint.h" 168a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkRefCnt.h" 178a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkPath.h" 188a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkRegion.h" 194a8126e7f81384526629b1e21bf89b632ea13cd9reed#include "SkSurfaceProps.h" 20845fdaca174f4675e9acc164b510e3a5ffa9053creed@android.com#include "SkXfermode.h" 218a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 221f2f338e23789f3eef168dcbd8171a28820ba6c1robertphillips@google.comclass SkBaseDevice; 236a070dc06af4e9f305f9d08a69e34d18ade473cbreedclass SkCanvasClipVisitor; 248a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comclass SkDraw; 253cb3840c9af6f70896cf5565a38d4ee03c02d767reedclass SkDrawable; 268a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comclass SkDrawFilter; 27b5fae93d72c7b6480f83fd8a7b534cd1fdfcd49apiotaixrclass SkImage; 2874bb77ee4c747b8c70c5c613987c9f93df71df06mike@reedtribe.orgclass SkMetaData; 298a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comclass SkPicture; 304ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.comclass SkRRect; 3176f10a3bd936af7dbe2b5873d5a7eedd73cdc5dareed@google.comclass SkSurface; 3297af1a64ae6bdddd346d8babfd9f188279dd6644reed@google.comclass SkSurface_Base; 3300d5c2c6523321d25b32905ff4822f083a4173eefmalitaclass SkTextBlob; 34644629c1c7913a43ced172b98d56e0f471bc348bcommit-bot@chromium.orgclass GrContext; 359c135db83d198e7d8200027c7d2cf60f38517ee3reed@google.comclass GrRenderTarget; 368a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 37fa35f8e6ebc9d98d57d2edc35e4a83556eb75caereedclass SkCanvasState; 38fa35f8e6ebc9d98d57d2edc35e4a83556eb75caereed 398a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com/** \class SkCanvas 408a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 418a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com A Canvas encapsulates all of the state about drawing into a device (bitmap). 428a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com This includes a reference to the device itself, and a stack of matrix/clip 438a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com values. For any given draw call (e.g. drawRect), the geometry of the object 448a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com being drawn is transformed by the concatenation of all the matrices in the 458a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com stack. The transformed geometry is clipped by the intersection of all of 468a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com the clips in the stack. 478a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 488a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com While the Canvas holds the state of the drawing device, the state (style) 498a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com of the object being drawn is held by the Paint, which is provided as a 508a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com parameter to each of the draw() methods. The Paint holds attributes such as 518a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com color, typeface, textSize, strokeWidth, shader (e.g. gradients, patterns), 528a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com etc. 538a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com*/ 547ffb1b21abcc7bbed5a0fc711f6dd7b9dbb4f577ctguil@chromium.orgclass SK_API SkCanvas : public SkRefCnt { 558a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.compublic: 5615e9d3e66e161ce23df30bc13f8a0c87d196b463robertphillips@google.com SK_DECLARE_INST_COUNT(SkCanvas) 5715e9d3e66e161ce23df30bc13f8a0c87d196b463robertphillips@google.com 58e254310a55d55a710309714c48f7fbbe7a6126f7commit-bot@chromium.org /** 5942b08932e81abd8ebf296bede1994d297811511dcommit-bot@chromium.org * Attempt to allocate raster canvas, matching the ImageInfo, that will draw directly into the 6042b08932e81abd8ebf296bede1994d297811511dcommit-bot@chromium.org * specified pixels. To access the pixels after drawing to them, the caller should call 6142b08932e81abd8ebf296bede1994d297811511dcommit-bot@chromium.org * flush() or call peekPixels(...). 6242b08932e81abd8ebf296bede1994d297811511dcommit-bot@chromium.org * 6342b08932e81abd8ebf296bede1994d297811511dcommit-bot@chromium.org * On failure, return NULL. This can fail for several reasons: 6442b08932e81abd8ebf296bede1994d297811511dcommit-bot@chromium.org * 1. invalid ImageInfo (e.g. negative dimensions) 6542b08932e81abd8ebf296bede1994d297811511dcommit-bot@chromium.org * 2. unsupported ImageInfo for a canvas 6642b08932e81abd8ebf296bede1994d297811511dcommit-bot@chromium.org * - kUnknown_SkColorType, kIndex_8_SkColorType 6742b08932e81abd8ebf296bede1994d297811511dcommit-bot@chromium.org * - kIgnore_SkAlphaType 6842b08932e81abd8ebf296bede1994d297811511dcommit-bot@chromium.org * - this list is not complete, so others may also be unsupported 6942b08932e81abd8ebf296bede1994d297811511dcommit-bot@chromium.org * 7042b08932e81abd8ebf296bede1994d297811511dcommit-bot@chromium.org * Note: it is valid to request a supported ImageInfo, but with zero 7142b08932e81abd8ebf296bede1994d297811511dcommit-bot@chromium.org * dimensions. 7242b08932e81abd8ebf296bede1994d297811511dcommit-bot@chromium.org */ 7342b08932e81abd8ebf296bede1994d297811511dcommit-bot@chromium.org static SkCanvas* NewRasterDirect(const SkImageInfo&, void*, size_t); 7442b08932e81abd8ebf296bede1994d297811511dcommit-bot@chromium.org 7542b08932e81abd8ebf296bede1994d297811511dcommit-bot@chromium.org static SkCanvas* NewRasterDirectN32(int width, int height, SkPMColor* pixels, size_t rowBytes) { 7642b08932e81abd8ebf296bede1994d297811511dcommit-bot@chromium.org return NewRasterDirect(SkImageInfo::MakeN32Premul(width, height), pixels, rowBytes); 7742b08932e81abd8ebf296bede1994d297811511dcommit-bot@chromium.org } 7842b08932e81abd8ebf296bede1994d297811511dcommit-bot@chromium.org 7942b08932e81abd8ebf296bede1994d297811511dcommit-bot@chromium.org /** 80e254310a55d55a710309714c48f7fbbe7a6126f7commit-bot@chromium.org * Creates an empty canvas with no backing device/pixels, and zero 81e254310a55d55a710309714c48f7fbbe7a6126f7commit-bot@chromium.org * dimensions. 82e254310a55d55a710309714c48f7fbbe7a6126f7commit-bot@chromium.org */ 83cde92111d50a96b6d0f3e166fbac7c9bc6eca349reed@google.com SkCanvas(); 848d84fac294682647694b0d2d8a87ac2bd19b6aabvandebo@chromium.org 85e254310a55d55a710309714c48f7fbbe7a6126f7commit-bot@chromium.org /** 86e254310a55d55a710309714c48f7fbbe7a6126f7commit-bot@chromium.org * Creates a canvas of the specified dimensions, but explicitly not backed 87e254310a55d55a710309714c48f7fbbe7a6126f7commit-bot@chromium.org * by any device/pixels. Typically this use used by subclasses who handle 88e254310a55d55a710309714c48f7fbbe7a6126f7commit-bot@chromium.org * the draw calls in some other way. 89e254310a55d55a710309714c48f7fbbe7a6126f7commit-bot@chromium.org */ 9096a857ef5a40b3d0751ec9ebaaa96d9f20b82b21reed SkCanvas(int width, int height, const SkSurfaceProps* = NULL); 91e254310a55d55a710309714c48f7fbbe7a6126f7commit-bot@chromium.org 926dc745506e6d6cc0936fed4de24443dc1ecb5a34reed@google.com /** Construct a canvas with the specified device to draw into. 93e97f0856a8044866b12527819d14cdfbcdfd96f2bsalomon@google.com 948d84fac294682647694b0d2d8a87ac2bd19b6aabvandebo@chromium.org @param device Specifies a device for the canvas to draw into. 958d84fac294682647694b0d2d8a87ac2bd19b6aabvandebo@chromium.org */ 961f2f338e23789f3eef168dcbd8171a28820ba6c1robertphillips@google.com explicit SkCanvas(SkBaseDevice* device); 978d84fac294682647694b0d2d8a87ac2bd19b6aabvandebo@chromium.org 984469938e92d779dff05e745559e67907bbf21e78reed@google.com /** Construct a canvas with the specified bitmap to draw into. 998a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param bitmap Specifies a bitmap for the canvas to draw into. Its 1008a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com structure are copied to the canvas. 1018a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 1028a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com explicit SkCanvas(const SkBitmap& bitmap); 1033d91aad293b0f68886ed48ecfa6aa75826a27da8fmalita 1043d91aad293b0f68886ed48ecfa6aa75826a27da8fmalita /** Construct a canvas with the specified bitmap to draw into. 1053d91aad293b0f68886ed48ecfa6aa75826a27da8fmalita @param bitmap Specifies a bitmap for the canvas to draw into. Its 1063d91aad293b0f68886ed48ecfa6aa75826a27da8fmalita structure are copied to the canvas. 1073d91aad293b0f68886ed48ecfa6aa75826a27da8fmalita @param props New canvas surface properties. 1083d91aad293b0f68886ed48ecfa6aa75826a27da8fmalita */ 1093d91aad293b0f68886ed48ecfa6aa75826a27da8fmalita SkCanvas(const SkBitmap& bitmap, const SkSurfaceProps& props); 1103d91aad293b0f68886ed48ecfa6aa75826a27da8fmalita 1118a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com virtual ~SkCanvas(); 1128a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 11374bb77ee4c747b8c70c5c613987c9f93df71df06mike@reedtribe.org SkMetaData& getMetaData(); 11474bb77ee4c747b8c70c5c613987c9f93df71df06mike@reedtribe.org 115c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org /** 116c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org * Return ImageInfo for this canvas. If the canvas is not backed by pixels 117c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org * (cpu or gpu), then the info's ColorType will be kUnknown_SkColorType. 118c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org */ 119c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org SkImageInfo imageInfo() const; 120c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org 1218a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /////////////////////////////////////////////////////////////////////////// 1228a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 123210ce003a5ec039dda80de0569fb47ca4efc4dc7reed@google.com /** 124bf6c1e4aff4d233f6502157fb73459cf69d0ab37junov@chromium.org * Trigger the immediate execution of all pending draw operations. 125bf6c1e4aff4d233f6502157fb73459cf69d0ab37junov@chromium.org */ 126bf6c1e4aff4d233f6502157fb73459cf69d0ab37junov@chromium.org void flush(); 127bf6c1e4aff4d233f6502157fb73459cf69d0ab37junov@chromium.org 128bf6c1e4aff4d233f6502157fb73459cf69d0ab37junov@chromium.org /** 1294ebe3821888d550d8a8b89341ec251ba942f0225bsalomon@google.com * Gets the size of the base or root layer in global canvas coordinates. The 1304ebe3821888d550d8a8b89341ec251ba942f0225bsalomon@google.com * origin of the base layer is always (0,0). The current drawable area may be 1314ebe3821888d550d8a8b89341ec251ba942f0225bsalomon@google.com * smaller (due to clipping or saveLayer). 132210ce003a5ec039dda80de0569fb47ca4efc4dc7reed@google.com */ 1334ebe3821888d550d8a8b89341ec251ba942f0225bsalomon@google.com SkISize getBaseLayerSize() const; 1344ebe3821888d550d8a8b89341ec251ba942f0225bsalomon@google.com 1354ebe3821888d550d8a8b89341ec251ba942f0225bsalomon@google.com /** 1364ebe3821888d550d8a8b89341ec251ba942f0225bsalomon@google.com * DEPRECATED: call getBaseLayerSize 1374ebe3821888d550d8a8b89341ec251ba942f0225bsalomon@google.com */ 1384ebe3821888d550d8a8b89341ec251ba942f0225bsalomon@google.com SkISize getDeviceSize() const { return this->getBaseLayerSize(); } 139210ce003a5ec039dda80de0569fb47ca4efc4dc7reed@google.com 140c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org /** 141c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org * DEPRECATED. 142c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org * Return the canvas' device object, which may be null. The device holds 143c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org * the bitmap of the pixels that the canvas draws into. The reference count 144c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org * of the returned device is not changed by this call. 145c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org */ 14652d9ac6c92ddf33b3b05eb77ba9509a7aa441657reed#ifndef SK_SUPPORT_LEGACY_GETDEVICE 14752d9ac6c92ddf33b3b05eb77ba9509a7aa441657reedprotected: // Can we make this private? 14852d9ac6c92ddf33b3b05eb77ba9509a7aa441657reed#endif 1491f2f338e23789f3eef168dcbd8171a28820ba6c1robertphillips@google.com SkBaseDevice* getDevice() const; 15052d9ac6c92ddf33b3b05eb77ba9509a7aa441657reedpublic: 1518a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 1529266fed56a46a4edc710a52c7be8d46fd7c2bc7areed@google.com /** 1539266fed56a46a4edc710a52c7be8d46fd7c2bc7areed@google.com * saveLayer() can create another device (which is later drawn onto 1549266fed56a46a4edc710a52c7be8d46fd7c2bc7areed@google.com * the previous device). getTopDevice() returns the top-most device current 1559266fed56a46a4edc710a52c7be8d46fd7c2bc7areed@google.com * installed. Note that this can change on other calls like save/restore, 1569266fed56a46a4edc710a52c7be8d46fd7c2bc7areed@google.com * so do not access this device after subsequent canvas calls. 1579266fed56a46a4edc710a52c7be8d46fd7c2bc7areed@google.com * The reference count of the device is not changed. 1580b53d59a24f667350b4282f88470713902409030reed@google.com * 1590b53d59a24f667350b4282f88470713902409030reed@google.com * @param updateMatrixClip If this is true, then before the device is 1600b53d59a24f667350b4282f88470713902409030reed@google.com * returned, we ensure that its has been notified about the current 1610b53d59a24f667350b4282f88470713902409030reed@google.com * matrix and clip. Note: this happens automatically when the device 1620b53d59a24f667350b4282f88470713902409030reed@google.com * is drawn to, but is optional here, as there is a small perf hit 1630b53d59a24f667350b4282f88470713902409030reed@google.com * sometimes. 1649266fed56a46a4edc710a52c7be8d46fd7c2bc7areed@google.com */ 1659c135db83d198e7d8200027c7d2cf60f38517ee3reed@google.com#ifndef SK_SUPPORT_LEGACY_GETTOPDEVICE 1669c135db83d198e7d8200027c7d2cf60f38517ee3reed@google.comprivate: 1679c135db83d198e7d8200027c7d2cf60f38517ee3reed@google.com#endif 1681f2f338e23789f3eef168dcbd8171a28820ba6c1robertphillips@google.com SkBaseDevice* getTopDevice(bool updateMatrixClip = false) const; 1699c135db83d198e7d8200027c7d2cf60f38517ee3reed@google.compublic: 1709266fed56a46a4edc710a52c7be8d46fd7c2bc7areed@google.com 17176f10a3bd936af7dbe2b5873d5a7eedd73cdc5dareed@google.com /** 17276f10a3bd936af7dbe2b5873d5a7eedd73cdc5dareed@google.com * Create a new surface matching the specified info, one that attempts to 173cae54f1f211e3c293ef9afb968067d06ca0ea23dcommit-bot@chromium.org * be maximally compatible when used with this canvas. If there is no matching Surface type, 174cae54f1f211e3c293ef9afb968067d06ca0ea23dcommit-bot@chromium.org * NULL is returned. 1754a8126e7f81384526629b1e21bf89b632ea13cd9reed * 1764a8126e7f81384526629b1e21bf89b632ea13cd9reed * If surfaceprops is specified, those are passed to the new surface, otherwise the new surface 1774a8126e7f81384526629b1e21bf89b632ea13cd9reed * inherits the properties of the surface that owns this canvas. If this canvas has no parent 1784a8126e7f81384526629b1e21bf89b632ea13cd9reed * surface, then the new surface is created with default properties. 17976f10a3bd936af7dbe2b5873d5a7eedd73cdc5dareed@google.com */ 1804a8126e7f81384526629b1e21bf89b632ea13cd9reed SkSurface* newSurface(const SkImageInfo&, const SkSurfaceProps* = NULL); 181e97f0856a8044866b12527819d14cdfbcdfd96f2bsalomon@google.com 182644629c1c7913a43ced172b98d56e0f471bc348bcommit-bot@chromium.org /** 183644629c1c7913a43ced172b98d56e0f471bc348bcommit-bot@chromium.org * Return the GPU context of the device that is associated with the canvas. 184644629c1c7913a43ced172b98d56e0f471bc348bcommit-bot@chromium.org * For a canvas with non-GPU device, NULL is returned. 185644629c1c7913a43ced172b98d56e0f471bc348bcommit-bot@chromium.org */ 186644629c1c7913a43ced172b98d56e0f471bc348bcommit-bot@chromium.org GrContext* getGrContext(); 187644629c1c7913a43ced172b98d56e0f471bc348bcommit-bot@chromium.org 1884b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com /////////////////////////////////////////////////////////////////////////// 1894b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com 190daba14b7d4fc96b915c45d82713b22729c0d0f37bsalomon@google.com /** 1919c135db83d198e7d8200027c7d2cf60f38517ee3reed@google.com * If the canvas has writable pixels in its top layer (and is not recording to a picture 1929c135db83d198e7d8200027c7d2cf60f38517ee3reed@google.com * or other non-raster target) and has direct access to its pixels (i.e. they are in 1939c135db83d198e7d8200027c7d2cf60f38517ee3reed@google.com * local RAM) return the address of those pixels, and if not null, 1946b4aaa77dcc4f17d0e22986f5f4cca70011d1ee5commit-bot@chromium.org * return the ImageInfo, rowBytes and origin. The returned address is only valid 1959c135db83d198e7d8200027c7d2cf60f38517ee3reed@google.com * while the canvas object is in scope and unchanged. Any API calls made on 1969c135db83d198e7d8200027c7d2cf60f38517ee3reed@google.com * canvas (or its parent surface if any) will invalidate the 1979c135db83d198e7d8200027c7d2cf60f38517ee3reed@google.com * returned address (and associated information). 1989c135db83d198e7d8200027c7d2cf60f38517ee3reed@google.com * 1996b4aaa77dcc4f17d0e22986f5f4cca70011d1ee5commit-bot@chromium.org * On failure, returns NULL and the info, rowBytes, and origin parameters are ignored. 2009c135db83d198e7d8200027c7d2cf60f38517ee3reed@google.com */ 2016b4aaa77dcc4f17d0e22986f5f4cca70011d1ee5commit-bot@chromium.org void* accessTopLayerPixels(SkImageInfo* info, size_t* rowBytes, SkIPoint* origin = NULL); 2029c135db83d198e7d8200027c7d2cf60f38517ee3reed@google.com 2039c135db83d198e7d8200027c7d2cf60f38517ee3reed@google.com /** 2049c135db83d198e7d8200027c7d2cf60f38517ee3reed@google.com * If the canvas has readable pixels in its base layer (and is not recording to a picture 2059c135db83d198e7d8200027c7d2cf60f38517ee3reed@google.com * or other non-raster target) and has direct access to its pixels (i.e. they are in 206c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org * local RAM) return the const-address of those pixels, and if not null, 207c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org * return the ImageInfo and rowBytes. The returned address is only valid 208c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org * while the canvas object is in scope and unchanged. Any API calls made on 209c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org * canvas (or its parent surface if any) will invalidate the 210c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org * returned address (and associated information). 211c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org * 212c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org * On failure, returns NULL and the info and rowBytes parameters are 213c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org * ignored. 214c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org */ 215c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org const void* peekPixels(SkImageInfo* info, size_t* rowBytes); 216c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org 217a713f9c6f6a06d216d53e268b9c691941053dabfcommit-bot@chromium.org /** 218a713f9c6f6a06d216d53e268b9c691941053dabfcommit-bot@chromium.org * Copy the pixels from the base-layer into the specified buffer (pixels + rowBytes), 219a713f9c6f6a06d216d53e268b9c691941053dabfcommit-bot@chromium.org * converting them into the requested format (SkImageInfo). The base-layer pixels are read 220b184f7f52b2a94e95aee326a3ca37110d2e43336reed * starting at the specified (srcX,srcY) location in the coordinate system of the base-layer. 221a713f9c6f6a06d216d53e268b9c691941053dabfcommit-bot@chromium.org * 222b184f7f52b2a94e95aee326a3ca37110d2e43336reed * The specified ImageInfo and (srcX,srcY) offset specifies a source rectangle 223a713f9c6f6a06d216d53e268b9c691941053dabfcommit-bot@chromium.org * 224b184f7f52b2a94e95aee326a3ca37110d2e43336reed * srcR.setXYWH(srcX, srcY, dstInfo.width(), dstInfo.height()); 225a713f9c6f6a06d216d53e268b9c691941053dabfcommit-bot@chromium.org * 226b184f7f52b2a94e95aee326a3ca37110d2e43336reed * srcR is intersected with the bounds of the base-layer. If this intersection is not empty, 227b184f7f52b2a94e95aee326a3ca37110d2e43336reed * then we have two sets of pixels (of equal size). Replace the dst pixels with the 228b184f7f52b2a94e95aee326a3ca37110d2e43336reed * corresponding src pixels, performing any colortype/alphatype transformations needed 229b184f7f52b2a94e95aee326a3ca37110d2e43336reed * (in the case where the src and dst have different colortypes or alphatypes). 230a713f9c6f6a06d216d53e268b9c691941053dabfcommit-bot@chromium.org * 231a713f9c6f6a06d216d53e268b9c691941053dabfcommit-bot@chromium.org * This call can fail, returning false, for several reasons: 232b184f7f52b2a94e95aee326a3ca37110d2e43336reed * - If srcR does not intersect the base-layer bounds. 233a713f9c6f6a06d216d53e268b9c691941053dabfcommit-bot@chromium.org * - If the requested colortype/alphatype cannot be converted from the base-layer's types. 234a713f9c6f6a06d216d53e268b9c691941053dabfcommit-bot@chromium.org * - If this canvas is not backed by pixels (e.g. picture or PDF) 235a713f9c6f6a06d216d53e268b9c691941053dabfcommit-bot@chromium.org */ 236b184f7f52b2a94e95aee326a3ca37110d2e43336reed bool readPixels(const SkImageInfo& dstInfo, void* dstPixels, size_t dstRowBytes, 237b184f7f52b2a94e95aee326a3ca37110d2e43336reed int srcX, int srcY); 238a713f9c6f6a06d216d53e268b9c691941053dabfcommit-bot@chromium.org 239a713f9c6f6a06d216d53e268b9c691941053dabfcommit-bot@chromium.org /** 240a713f9c6f6a06d216d53e268b9c691941053dabfcommit-bot@chromium.org * Helper for calling readPixels(info, ...). This call will check if bitmap has been allocated. 241a713f9c6f6a06d216d53e268b9c691941053dabfcommit-bot@chromium.org * If not, it will attempt to call allocPixels(). If this fails, it will return false. If not, 242a713f9c6f6a06d216d53e268b9c691941053dabfcommit-bot@chromium.org * it calls through to readPixels(info, ...) and returns its result. 243a713f9c6f6a06d216d53e268b9c691941053dabfcommit-bot@chromium.org */ 244b184f7f52b2a94e95aee326a3ca37110d2e43336reed bool readPixels(SkBitmap* bitmap, int srcX, int srcY); 245c69809745e6496564639e42ef998ad39adf7dfb8bsalomon@google.com 2464b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com /** 247a713f9c6f6a06d216d53e268b9c691941053dabfcommit-bot@chromium.org * Helper for allocating pixels and then calling readPixels(info, ...). The bitmap is resized 248a713f9c6f6a06d216d53e268b9c691941053dabfcommit-bot@chromium.org * to the intersection of srcRect and the base-layer bounds. On success, pixels will be 249a713f9c6f6a06d216d53e268b9c691941053dabfcommit-bot@chromium.org * allocated in bitmap and true returned. On failure, false is returned and bitmap will be 250a713f9c6f6a06d216d53e268b9c691941053dabfcommit-bot@chromium.org * set to empty. 25151df9e3fe3c1aec370854b2718df16fc02faa1b2reed@google.com */ 25251df9e3fe3c1aec370854b2718df16fc02faa1b2reed@google.com bool readPixels(const SkIRect& srcRect, SkBitmap* bitmap); 25351df9e3fe3c1aec370854b2718df16fc02faa1b2reed@google.com 2544cd9e2169e35cd67ee7358acea6541245e1d1744commit-bot@chromium.org /** 2554cd9e2169e35cd67ee7358acea6541245e1d1744commit-bot@chromium.org * This method affects the pixels in the base-layer, and operates in pixel coordinates, 2564cd9e2169e35cd67ee7358acea6541245e1d1744commit-bot@chromium.org * ignoring the matrix and clip. 2574cd9e2169e35cd67ee7358acea6541245e1d1744commit-bot@chromium.org * 2584cd9e2169e35cd67ee7358acea6541245e1d1744commit-bot@chromium.org * The specified ImageInfo and (x,y) offset specifies a rectangle: target. 2594cd9e2169e35cd67ee7358acea6541245e1d1744commit-bot@chromium.org * 2604cd9e2169e35cd67ee7358acea6541245e1d1744commit-bot@chromium.org * target.setXYWH(x, y, info.width(), info.height()); 2614cd9e2169e35cd67ee7358acea6541245e1d1744commit-bot@chromium.org * 2624cd9e2169e35cd67ee7358acea6541245e1d1744commit-bot@chromium.org * Target is intersected with the bounds of the base-layer. If this intersection is not empty, 2634cd9e2169e35cd67ee7358acea6541245e1d1744commit-bot@chromium.org * then we have two sets of pixels (of equal size), the "src" specified by info+pixels+rowBytes 2644cd9e2169e35cd67ee7358acea6541245e1d1744commit-bot@chromium.org * and the "dst" by the canvas' backend. Replace the dst pixels with the corresponding src 2654cd9e2169e35cd67ee7358acea6541245e1d1744commit-bot@chromium.org * pixels, performing any colortype/alphatype transformations needed (in the case where the 2664cd9e2169e35cd67ee7358acea6541245e1d1744commit-bot@chromium.org * src and dst have different colortypes or alphatypes). 2674cd9e2169e35cd67ee7358acea6541245e1d1744commit-bot@chromium.org * 2684cd9e2169e35cd67ee7358acea6541245e1d1744commit-bot@chromium.org * This call can fail, returning false, for several reasons: 2694cd9e2169e35cd67ee7358acea6541245e1d1744commit-bot@chromium.org * - If the src colortype/alphatype cannot be converted to the canvas' types 2704cd9e2169e35cd67ee7358acea6541245e1d1744commit-bot@chromium.org * - If this canvas is not backed by pixels (e.g. picture or PDF) 2714cd9e2169e35cd67ee7358acea6541245e1d1744commit-bot@chromium.org */ 2724cd9e2169e35cd67ee7358acea6541245e1d1744commit-bot@chromium.org bool writePixels(const SkImageInfo&, const void* pixels, size_t rowBytes, int x, int y); 2734cd9e2169e35cd67ee7358acea6541245e1d1744commit-bot@chromium.org 2744cd9e2169e35cd67ee7358acea6541245e1d1744commit-bot@chromium.org /** 2754cd9e2169e35cd67ee7358acea6541245e1d1744commit-bot@chromium.org * Helper for calling writePixels(info, ...) by passing its pixels and rowbytes. If the bitmap 2764cd9e2169e35cd67ee7358acea6541245e1d1744commit-bot@chromium.org * is just wrapping a texture, returns false and does nothing. 2774cd9e2169e35cd67ee7358acea6541245e1d1744commit-bot@chromium.org */ 2784cd9e2169e35cd67ee7358acea6541245e1d1744commit-bot@chromium.org bool writePixels(const SkBitmap& bitmap, int x, int y); 2794b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com 2808a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /////////////////////////////////////////////////////////////////////////// 2818d84fac294682647694b0d2d8a87ac2bd19b6aabvandebo@chromium.org 2828a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com enum SaveFlags { 2838a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** save the matrix state, restoring it on restore() */ 2845f6102d07982043542343ff0a6c67b1319ac9fc7Florin Malita // [deprecated] kMatrix_SaveFlag = 0x01, 285696d3611760b0465caaebf6243824960034c3592fmalita kMatrix_SaveFlag = 0x01, 2868a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** save the clip state, restoring it on restore() */ 2875f6102d07982043542343ff0a6c67b1319ac9fc7Florin Malita // [deprecated] kClip_SaveFlag = 0x02, 288696d3611760b0465caaebf6243824960034c3592fmalita kClip_SaveFlag = 0x02, 2898a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** the layer needs to support per-pixel alpha */ 2908a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kHasAlphaLayer_SaveFlag = 0x04, 2918a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** the layer needs to support 8-bits per color component */ 2928a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kFullColorLayer_SaveFlag = 0x08, 293b93ba45b58ad24e0e2cb75b842e24ff711c368b0reed@google.com /** 294b93ba45b58ad24e0e2cb75b842e24ff711c368b0reed@google.com * the layer should clip against the bounds argument 295b93ba45b58ad24e0e2cb75b842e24ff711c368b0reed@google.com * 296b93ba45b58ad24e0e2cb75b842e24ff711c368b0reed@google.com * if SK_SUPPORT_LEGACY_CLIPTOLAYERFLAG is undefined, this is treated as always on. 297b93ba45b58ad24e0e2cb75b842e24ff711c368b0reed@google.com */ 2988a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kClipToLayer_SaveFlag = 0x10, 2998a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 3008a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com // helper masks for common choices 3015f6102d07982043542343ff0a6c67b1319ac9fc7Florin Malita // [deprecated] kMatrixClip_SaveFlag = 0x03, 302696d3611760b0465caaebf6243824960034c3592fmalita kMatrixClip_SaveFlag = 0x03, 303b93ba45b58ad24e0e2cb75b842e24ff711c368b0reed@google.com#ifdef SK_SUPPORT_LEGACY_CLIPTOLAYERFLAG 3048a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kARGB_NoClipLayer_SaveFlag = 0x0F, 305b93ba45b58ad24e0e2cb75b842e24ff711c368b0reed@google.com#endif 3068a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kARGB_ClipLayer_SaveFlag = 0x1F 3078a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com }; 3088a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 309dc3381fc8194a6192af39539c6ac9787b20209d3reed@android.com /** This call saves the current matrix, clip, and drawFilter, and pushes a 3108a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com copy onto a private stack. Subsequent calls to translate, scale, 311dc3381fc8194a6192af39539c6ac9787b20209d3reed@android.com rotate, skew, concat or clipRect, clipPath, and setDrawFilter all 312dc3381fc8194a6192af39539c6ac9787b20209d3reed@android.com operate on this copy. 313dc3381fc8194a6192af39539c6ac9787b20209d3reed@android.com When the balancing call to restore() is made, the previous matrix, clip, 314dc3381fc8194a6192af39539c6ac9787b20209d3reed@android.com and drawFilter are restored. 315d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org 316d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org @return The value to pass to restoreToCount() to balance this save() 317d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org */ 318d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org int save(); 319d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org 3208a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** This behaves the same as save(), but in addition it allocates an 3218a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com offscreen bitmap. All drawing calls are directed there, and only when 3228a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com the balancing call to restore() is made is that offscreen transfered to 323dc3381fc8194a6192af39539c6ac9787b20209d3reed@android.com the canvas (or the previous layer). 324ad164b2025cba65131ca68221a6ea7640d7b1de8reed@android.com @param bounds (may be null) This rect, if non-null, is used as a hint to 325ad164b2025cba65131ca68221a6ea7640d7b1de8reed@android.com limit the size of the offscreen, and thus drawing may be 326ad164b2025cba65131ca68221a6ea7640d7b1de8reed@android.com clipped to it, though that clipping is not guaranteed to 327ad164b2025cba65131ca68221a6ea7640d7b1de8reed@android.com happen. If exact clipping is desired, use clipRect(). 3288a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint (may be null) This is copied, and is applied to the 3298a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com offscreen when restore() is called 330d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org @return The value to pass to restoreToCount() to balance this save() 331d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org */ 332d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org int saveLayer(const SkRect* bounds, const SkPaint* paint); 333d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org 334d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org /** DEPRECATED - use saveLayer(const SkRect*, const SkPaint*) instead. 335d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org 336d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org This behaves the same as saveLayer(const SkRect*, const SkPaint*), 337d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org but it allows fine-grained control of which state bits to be saved 338d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org (and subsequently restored). 339d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org 340d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org @param bounds (may be null) This rect, if non-null, is used as a hint to 341d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org limit the size of the offscreen, and thus drawing may be 342d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org clipped to it, though that clipping is not guaranteed to 343d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org happen. If exact clipping is desired, use clipRect(). 344d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org @param paint (may be null) This is copied, and is applied to the 345d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org offscreen when restore() is called 3468a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param flags LayerFlags 3478a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @return The value to pass to restoreToCount() to balance this save() 3488a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 349d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org SK_ATTR_EXTERNALLY_DEPRECATED("SaveFlags use is deprecated") 350d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org int saveLayer(const SkRect* bounds, const SkPaint* paint, SaveFlags flags); 3518a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 3528a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** This behaves the same as save(), but in addition it allocates an 3538a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com offscreen bitmap. All drawing calls are directed there, and only when 3548a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com the balancing call to restore() is made is that offscreen transfered to 355dc3381fc8194a6192af39539c6ac9787b20209d3reed@android.com the canvas (or the previous layer). 35640408614655c4057d93842c9b0f09aa6dfff9e02reed@android.com @param bounds (may be null) This rect, if non-null, is used as a hint to 35740408614655c4057d93842c9b0f09aa6dfff9e02reed@android.com limit the size of the offscreen, and thus drawing may be 35840408614655c4057d93842c9b0f09aa6dfff9e02reed@android.com clipped to it, though that clipping is not guaranteed to 35940408614655c4057d93842c9b0f09aa6dfff9e02reed@android.com happen. If exact clipping is desired, use clipRect(). 3608a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param alpha This is applied to the offscreen when restore() is called. 361d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org @return The value to pass to restoreToCount() to balance this save() 362d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org */ 363d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org int saveLayerAlpha(const SkRect* bounds, U8CPU alpha); 364d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org 365d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org /** DEPRECATED - use saveLayerAlpha(const SkRect*, U8CPU) instead. 366d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org 367d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org This behaves the same as saveLayerAlpha(const SkRect*, U8CPU), 368d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org but it allows fine-grained control of which state bits to be saved 369d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org (and subsequently restored). 370d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org 371d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org @param bounds (may be null) This rect, if non-null, is used as a hint to 372d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org limit the size of the offscreen, and thus drawing may be 373d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org clipped to it, though that clipping is not guaranteed to 374d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org happen. If exact clipping is desired, use clipRect(). 375d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org @param alpha This is applied to the offscreen when restore() is called. 3768a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param flags LayerFlags 3778a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @return The value to pass to restoreToCount() to balance this save() 3788a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 379d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org SK_ATTR_EXTERNALLY_DEPRECATED("SaveFlags use is deprecated") 380d70fa2013adccaa52d1f3e6ca501a4d4ab1520f3commit-bot@chromium.org int saveLayerAlpha(const SkRect* bounds, U8CPU alpha, SaveFlags flags); 3818a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 3828a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** This call balances a previous call to save(), and is used to remove all 383dc3381fc8194a6192af39539c6ac9787b20209d3reed@android.com modifications to the matrix/clip/drawFilter state since the last save 384dc3381fc8194a6192af39539c6ac9787b20209d3reed@android.com call. 385dc3381fc8194a6192af39539c6ac9787b20209d3reed@android.com It is an error to call restore() more times than save() was called. 3868a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 387e54a23fcfa42b2fc9d320650de72bcb2d9566b2dcommit-bot@chromium.org void restore(); 3888a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 3898a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Returns the number of matrix/clip states on the SkCanvas' private stack. 390ea7d08e3bbc45a0a573c1ac06afa4452f8d7000acommit-bot@chromium.org This will equal # save() calls - # restore() calls + 1. The save count on 391ea7d08e3bbc45a0a573c1ac06afa4452f8d7000acommit-bot@chromium.org a new canvas is 1. 3928a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 393a907ac3e3e3458fbb5d673c3feafb31fd7647b38junov@chromium.org int getSaveCount() const; 3948a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 3958a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Efficient way to pop any calls to save() that happened after the save 396ea7d08e3bbc45a0a573c1ac06afa4452f8d7000acommit-bot@chromium.org count reached saveCount. It is an error for saveCount to be greater than 397ea7d08e3bbc45a0a573c1ac06afa4452f8d7000acommit-bot@chromium.org getSaveCount(). To pop all the way back to the initial matrix/clip context 398ea7d08e3bbc45a0a573c1ac06afa4452f8d7000acommit-bot@chromium.org pass saveCount == 1. 3998a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param saveCount The number of save() levels to restore from 4008a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 4018a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void restoreToCount(int saveCount); 4028a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 4038a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Preconcat the current matrix with the specified translation 4048a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param dx The distance to translate in X 4058a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param dy The distance to translate in Y 4068a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 40792362383a4de7b0d819c88fa8b74242bb2507602commit-bot@chromium.org void translate(SkScalar dx, SkScalar dy); 4088a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 4098a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Preconcat the current matrix with the specified scale. 4108a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param sx The amount to scale in X 4118a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param sy The amount to scale in Y 4128a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 41392362383a4de7b0d819c88fa8b74242bb2507602commit-bot@chromium.org void scale(SkScalar sx, SkScalar sy); 4148a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 4158a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Preconcat the current matrix with the specified rotation. 4168a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param degrees The amount to rotate, in degrees 4178a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 41892362383a4de7b0d819c88fa8b74242bb2507602commit-bot@chromium.org void rotate(SkScalar degrees); 4198a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 4208a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Preconcat the current matrix with the specified skew. 4218a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param sx The amount to skew in X 4228a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param sy The amount to skew in Y 4238a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 42492362383a4de7b0d819c88fa8b74242bb2507602commit-bot@chromium.org void skew(SkScalar sx, SkScalar sy); 4258a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 4268a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Preconcat the current matrix with the specified matrix. 4278a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param matrix The matrix to preconcatenate with the current matrix 4288a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 42992362383a4de7b0d819c88fa8b74242bb2507602commit-bot@chromium.org void concat(const SkMatrix& matrix); 4304b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com 4318a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Replace the current matrix with a copy of the specified matrix. 4328a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param matrix The matrix that will be copied into the current matrix. 4338a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 43444c48d062f7996b5b46917e1b312a32ad101f326commit-bot@chromium.org void setMatrix(const SkMatrix& matrix); 4354b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com 4368a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Helper for setMatrix(identity). Sets the current matrix to identity. 4378a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 4388a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void resetMatrix(); 4398a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 4404ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com /** 4414ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * Modify the current clip with the specified rectangle. 4424ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * @param rect The rect to combine with the current clip 4434ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * @param op The region op to apply to the current clip 4444ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * @param doAntiAlias true if the clip should be antialiased 4454ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com */ 446759cf4846804be137229393e04925752423de2d0commit-bot@chromium.org void clipRect(const SkRect& rect, 447759cf4846804be137229393e04925752423de2d0commit-bot@chromium.org SkRegion::Op op = SkRegion::kIntersect_Op, 448759cf4846804be137229393e04925752423de2d0commit-bot@chromium.org bool doAntiAlias = false); 4498a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 4504ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com /** 4514ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * Modify the current clip with the specified SkRRect. 4524ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * @param rrect The rrect to combine with the current clip 4534ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * @param op The region op to apply to the current clip 4544ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * @param doAntiAlias true if the clip should be antialiased 4554ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com */ 456759cf4846804be137229393e04925752423de2d0commit-bot@chromium.org void clipRRect(const SkRRect& rrect, 457759cf4846804be137229393e04925752423de2d0commit-bot@chromium.org SkRegion::Op op = SkRegion::kIntersect_Op, 458759cf4846804be137229393e04925752423de2d0commit-bot@chromium.org bool doAntiAlias = false); 4594ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com 4604ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com /** 4614ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * Modify the current clip with the specified path. 4624ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * @param path The path to combine with the current clip 4634ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * @param op The region op to apply to the current clip 4644ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * @param doAntiAlias true if the clip should be antialiased 4654ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com */ 466759cf4846804be137229393e04925752423de2d0commit-bot@chromium.org void clipPath(const SkPath& path, 467759cf4846804be137229393e04925752423de2d0commit-bot@chromium.org SkRegion::Op op = SkRegion::kIntersect_Op, 468759cf4846804be137229393e04925752423de2d0commit-bot@chromium.org bool doAntiAlias = false); 4698a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 4708f0a7b8e7334187a5d7d5ab7fde5a3c3009555f5caryclark@google.com /** EXPERIMENTAL -- only used for testing 4718f0a7b8e7334187a5d7d5ab7fde5a3c3009555f5caryclark@google.com Set to false to force clips to be hard, even if doAntiAlias=true is 4728f0a7b8e7334187a5d7d5ab7fde5a3c3009555f5caryclark@google.com passed to clipRect or clipPath. 4738f0a7b8e7334187a5d7d5ab7fde5a3c3009555f5caryclark@google.com */ 4748f0a7b8e7334187a5d7d5ab7fde5a3c3009555f5caryclark@google.com void setAllowSoftClip(bool allow) { 4758f0a7b8e7334187a5d7d5ab7fde5a3c3009555f5caryclark@google.com fAllowSoftClip = allow; 4768f0a7b8e7334187a5d7d5ab7fde5a3c3009555f5caryclark@google.com } 4778f0a7b8e7334187a5d7d5ab7fde5a3c3009555f5caryclark@google.com 47845a75fb4d0ca5daa0ac5e634238970306e3b5838caryclark@google.com /** EXPERIMENTAL -- only used for testing 47945a75fb4d0ca5daa0ac5e634238970306e3b5838caryclark@google.com Set to simplify clip stack using path ops. 48045a75fb4d0ca5daa0ac5e634238970306e3b5838caryclark@google.com */ 48145a75fb4d0ca5daa0ac5e634238970306e3b5838caryclark@google.com void setAllowSimplifyClip(bool allow) { 48245a75fb4d0ca5daa0ac5e634238970306e3b5838caryclark@google.com fAllowSimplifyClip = allow; 48345a75fb4d0ca5daa0ac5e634238970306e3b5838caryclark@google.com } 48445a75fb4d0ca5daa0ac5e634238970306e3b5838caryclark@google.com 4858a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Modify the current clip with the specified region. Note that unlike 4868a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com clipRect() and clipPath() which transform their arguments by the current 4878a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com matrix, clipRegion() assumes its argument is already in device 4888a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com coordinates, and so no transformation is performed. 4898a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param deviceRgn The region to apply to the current clip 4908a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param op The region op to apply to the current clip 4918a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 492759cf4846804be137229393e04925752423de2d0commit-bot@chromium.org void clipRegion(const SkRegion& deviceRgn, 493759cf4846804be137229393e04925752423de2d0commit-bot@chromium.org SkRegion::Op op = SkRegion::kIntersect_Op); 4948a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 4958a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Helper for clipRegion(rgn, kReplace_Op). Sets the current clip to the 4968a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com specified region. This does not intersect or in any other way account 4978a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com for the existing clip region. 4988a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param deviceRgn The region to copy into the current clip. 4998a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 5008f90a892c5130d4d26b5588e1ff151d01a40688arobertphillips@google.com void setClipRegion(const SkRegion& deviceRgn) { 5018f90a892c5130d4d26b5588e1ff151d01a40688arobertphillips@google.com this->clipRegion(deviceRgn, SkRegion::kReplace_Op); 5028a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 5038a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 5048a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Return true if the specified rectangle, after being transformed by the 5058a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com current matrix, would lie completely outside of the current clip. Call 5068a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this to check if an area you intend to draw into is clipped out (and 5078a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com therefore you can skip making the draw calls). 5088a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param rect the rect to compare with the current clip 5098a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @return true if the rect (transformed by the canvas' matrix) does not 5108a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com intersect with the canvas' clip 5118a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 5123b3e895df6f8ee0f33010367c215944cd16a8334reed@google.com bool quickReject(const SkRect& rect) const; 5138a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 5148a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Return true if the specified path, after being transformed by the 5158a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com current matrix, would lie completely outside of the current clip. Call 5168a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this to check if an area you intend to draw into is clipped out (and 5178a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com therefore you can skip making the draw calls). Note, for speed it may 5188a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com return false even if the path itself might not intersect the clip 5198a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com (i.e. the bounds of the path intersects, but the path does not). 5208a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param path The path to compare with the current clip 5218a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @return true if the path (transformed by the canvas' matrix) does not 5228a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com intersect with the canvas' clip 5238a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 5243b3e895df6f8ee0f33010367c215944cd16a8334reed@google.com bool quickReject(const SkPath& path) const; 5258a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 5268a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Return true if the horizontal band specified by top and bottom is 5278a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com completely clipped out. This is a conservative calculation, meaning 5288a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com that it is possible that if the method returns false, the band may still 5298a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com in fact be clipped out, but the converse is not true. If this method 5308a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com returns true, then the band is guaranteed to be clipped out. 5318a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param top The top of the horizontal band to compare with the clip 5328a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param bottom The bottom of the horizontal and to compare with the clip 5338a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @return true if the horizontal band is completely clipped out (i.e. does 5348a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com not intersect the current clip) 5358a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 5363b3e895df6f8ee0f33010367c215944cd16a8334reed@google.com bool quickRejectY(SkScalar top, SkScalar bottom) const { 537c0784dbd408596aff13a5d97448f7a9e5d3cf7d9reed@google.com SkASSERT(top <= bottom); 5389836bc3fdddd51ed050102d03916cc5c7928dcc6commit-bot@chromium.org 5399836bc3fdddd51ed050102d03916cc5c7928dcc6commit-bot@chromium.org#ifndef SK_WILL_NEVER_DRAW_PERSPECTIVE_TEXT 5409836bc3fdddd51ed050102d03916cc5c7928dcc6commit-bot@chromium.org // TODO: add a hasPerspective method similar to getLocalClipBounds. This 5419836bc3fdddd51ed050102d03916cc5c7928dcc6commit-bot@chromium.org // would cache the SkMatrix::hasPerspective result. Alternatively, have 5429836bc3fdddd51ed050102d03916cc5c7928dcc6commit-bot@chromium.org // the MC stack just set a hasPerspective boolean as it is updated. 5439836bc3fdddd51ed050102d03916cc5c7928dcc6commit-bot@chromium.org if (this->getTotalMatrix().hasPerspective()) { 544a3b532743dbb1d54a4c17a2574083ef93c949d50skia.committer@gmail.com // TODO: consider implementing some half-plane test between the 5459836bc3fdddd51ed050102d03916cc5c7928dcc6commit-bot@chromium.org // two Y planes and the device-bounds (i.e., project the top and 5469836bc3fdddd51ed050102d03916cc5c7928dcc6commit-bot@chromium.org // bottom Y planes and then determine if the clip bounds is completely 5479836bc3fdddd51ed050102d03916cc5c7928dcc6commit-bot@chromium.org // outside either one). 5489836bc3fdddd51ed050102d03916cc5c7928dcc6commit-bot@chromium.org return false; 5499836bc3fdddd51ed050102d03916cc5c7928dcc6commit-bot@chromium.org } 5509836bc3fdddd51ed050102d03916cc5c7928dcc6commit-bot@chromium.org#endif 5519836bc3fdddd51ed050102d03916cc5c7928dcc6commit-bot@chromium.org 552c0784dbd408596aff13a5d97448f7a9e5d3cf7d9reed@google.com const SkRect& clipR = this->getLocalClipBounds(); 55392d2a299d2738e4369508ea1296981a2f1f8aadbdjsollen@google.com // In the case where the clip is empty and we are provided with a 55492d2a299d2738e4369508ea1296981a2f1f8aadbdjsollen@google.com // negative top and positive bottom parameter then this test will return 55592d2a299d2738e4369508ea1296981a2f1f8aadbdjsollen@google.com // false even though it will be clipped. We have chosen to exclude that 55692d2a299d2738e4369508ea1296981a2f1f8aadbdjsollen@google.com // check as it is rare and would result double the comparisons. 557c0784dbd408596aff13a5d97448f7a9e5d3cf7d9reed@google.com return top >= clipR.fBottom || bottom <= clipR.fTop; 55892d2a299d2738e4369508ea1296981a2f1f8aadbdjsollen@google.com } 5598a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 5608a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Return the bounds of the current clip (in local coordinates) in the 5618a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com bounds parameter, and return true if it is non-empty. This can be useful 5628a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com in a way similar to quickReject, in that it tells you that drawing 5638a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com outside of these bounds will be clipped out. 5648a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 5658f90a892c5130d4d26b5588e1ff151d01a40688arobertphillips@google.com virtual bool getClipBounds(SkRect* bounds) const; 5668a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 567bcb671c82a7341253864cda3a5c46d396402d7fbtomhudson@google.com /** Return the bounds of the current clip, in device coordinates; returns 568bcb671c82a7341253864cda3a5c46d396402d7fbtomhudson@google.com true if non-empty. Maybe faster than getting the clip explicitly and 569bcb671c82a7341253864cda3a5c46d396402d7fbtomhudson@google.com then taking its bounds. 570bcb671c82a7341253864cda3a5c46d396402d7fbtomhudson@google.com */ 5718f90a892c5130d4d26b5588e1ff151d01a40688arobertphillips@google.com virtual bool getClipDeviceBounds(SkIRect* bounds) const; 57274b461961607fa57a150a9282c410ef0cab38764vandebo@chromium.org 573bcb671c82a7341253864cda3a5c46d396402d7fbtomhudson@google.com 5748a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Fill the entire canvas' bitmap (restricted to the current clip) with the 575845fdaca174f4675e9acc164b510e3a5ffa9053creed@android.com specified ARGB color, using the specified mode. 5768a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param a the alpha component (0..255) of the color to fill the canvas 5778a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param r the red component (0..255) of the color to fill the canvas 5788a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param g the green component (0..255) of the color to fill the canvas 5798a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param b the blue component (0..255) of the color to fill the canvas 5808a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param mode the mode to apply the color in (defaults to SrcOver) 5818a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 5828a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void drawARGB(U8CPU a, U8CPU r, U8CPU g, U8CPU b, 583845fdaca174f4675e9acc164b510e3a5ffa9053creed@android.com SkXfermode::Mode mode = SkXfermode::kSrcOver_Mode); 5848a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 5858a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Fill the entire canvas' bitmap (restricted to the current clip) with the 586845fdaca174f4675e9acc164b510e3a5ffa9053creed@android.com specified color and mode. 5878a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param color the color to draw with 5888a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param mode the mode to apply the color in (defaults to SrcOver) 5898a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 5908eddfb50c0c9e4bcba6384a2ce39852b5fb5becbreed void drawColor(SkColor color, SkXfermode::Mode mode = SkXfermode::kSrcOver_Mode); 5918a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 592f4e0d9eb2d72fe92c30237de978936113143dc16reed /** 593f4e0d9eb2d72fe92c30237de978936113143dc16reed * Helper method for drawing a color in SRC mode, completely replacing all the pixels 594f4e0d9eb2d72fe92c30237de978936113143dc16reed * in the current clip with this color. 595f4e0d9eb2d72fe92c30237de978936113143dc16reed */ 596f4e0d9eb2d72fe92c30237de978936113143dc16reed void clear(SkColor color) { 5978eddfb50c0c9e4bcba6384a2ce39852b5fb5becbreed this->drawColor(color, SkXfermode::kSrc_Mode); 5988eddfb50c0c9e4bcba6384a2ce39852b5fb5becbreed } 5992a98181f048c11f21f52fbd99f803f5fd6118261reed@google.com 6002a98181f048c11f21f52fbd99f803f5fd6118261reed@google.com /** 60128361fad1054d59ed4e6a320c7a8b8782a1487c7commit-bot@chromium.org * This makes the contents of the canvas undefined. Subsequent calls that 60228361fad1054d59ed4e6a320c7a8b8782a1487c7commit-bot@chromium.org * require reading the canvas contents will produce undefined results. Examples 60328361fad1054d59ed4e6a320c7a8b8782a1487c7commit-bot@chromium.org * include blending and readPixels. The actual implementation is backend- 60428361fad1054d59ed4e6a320c7a8b8782a1487c7commit-bot@chromium.org * dependent and one legal implementation is to do nothing. Like clear(), this 60528361fad1054d59ed4e6a320c7a8b8782a1487c7commit-bot@chromium.org * ignores the clip. 60628361fad1054d59ed4e6a320c7a8b8782a1487c7commit-bot@chromium.org * 60728361fad1054d59ed4e6a320c7a8b8782a1487c7commit-bot@chromium.org * This function should only be called if the caller intends to subsequently 60828361fad1054d59ed4e6a320c7a8b8782a1487c7commit-bot@chromium.org * draw to the canvas. The canvas may do real work at discard() time in order 60928361fad1054d59ed4e6a320c7a8b8782a1487c7commit-bot@chromium.org * to optimize performance on subsequent draws. Thus, if you call this and then 61028361fad1054d59ed4e6a320c7a8b8782a1487c7commit-bot@chromium.org * never draw to the canvas subsequently you may pay a perfomance penalty. 61128361fad1054d59ed4e6a320c7a8b8782a1487c7commit-bot@chromium.org */ 61228361fad1054d59ed4e6a320c7a8b8782a1487c7commit-bot@chromium.org void discard() { this->onDiscard(); } 61328361fad1054d59ed4e6a320c7a8b8782a1487c7commit-bot@chromium.org 61428361fad1054d59ed4e6a320c7a8b8782a1487c7commit-bot@chromium.org /** 6152a98181f048c11f21f52fbd99f803f5fd6118261reed@google.com * Fill the entire canvas' bitmap (restricted to the current clip) with the 6162a98181f048c11f21f52fbd99f803f5fd6118261reed@google.com * specified paint. 6172a98181f048c11f21f52fbd99f803f5fd6118261reed@google.com * @param paint The paint used to fill the canvas 6182a98181f048c11f21f52fbd99f803f5fd6118261reed@google.com */ 6190846f1b1c43f5edebc2d87a19c7bca6574ff41dfreed void drawPaint(const SkPaint& paint); 6208a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 6218a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com enum PointMode { 6228a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** drawPoints draws each point separately */ 6238a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kPoints_PointMode, 6248a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** drawPoints draws each pair of points as a line segment */ 6258a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kLines_PointMode, 6268a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** drawPoints draws the array of points as a polygon */ 6278a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kPolygon_PointMode 6288a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com }; 6298a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 6308a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw a series of points, interpreted based on the PointMode mode. For 6318a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com all modes, the count parameter is interpreted as the total number of 6328a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com points. For kLine mode, count/2 line segments are drawn. 6338a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com For kPoint mode, each point is drawn centered at its coordinate, and its 6348a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com size is specified by the paint's stroke-width. It draws as a square, 6358a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com unless the paint's cap-type is round, in which the points are drawn as 6368a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com circles. 6378a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com For kLine mode, each pair of points is drawn as a line segment, 6388a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com respecting the paint's settings for cap/join/width. 6398a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com For kPolygon mode, the entire array is drawn as a series of connected 6408a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com line segments. 6418a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com Note that, while similar, kLine and kPolygon modes draw slightly 6428a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com differently than the equivalent path built with a series of moveto, 6438a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com lineto calls, in that the path will draw all of its contours at once, 6448a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com with no interactions if contours intersect each other (think XOR 6458a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com xfermode). drawPoints always draws each element one at a time. 6468a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param mode PointMode specifying how to draw the array of points. 6478a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param count The number of points in the array 6488a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param pts Array of points to draw 6498a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used to draw the points 6508a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 6510846f1b1c43f5edebc2d87a19c7bca6574ff41dfreed void drawPoints(PointMode mode, size_t count, const SkPoint pts[], const SkPaint& paint); 6528a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 6538a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Helper method for drawing a single point. See drawPoints() for a more 6548a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com details. 6558a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 6568a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void drawPoint(SkScalar x, SkScalar y, const SkPaint& paint); 6574b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com 6588a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draws a single pixel in the specified color. 6598a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param x The X coordinate of which pixel to draw 6608a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param y The Y coordiante of which pixel to draw 6618a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param color The color to draw 6628a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 6638a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void drawPoint(SkScalar x, SkScalar y, SkColor color); 6648a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 6658a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw a line segment with the specified start and stop x,y coordinates, 6668a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com using the specified paint. NOTE: since a line is always "framed", the 6678a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com paint's Style is ignored. 6688a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param x0 The x-coordinate of the start point of the line 6698a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param y0 The y-coordinate of the start point of the line 6708a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param x1 The x-coordinate of the end point of the line 6718a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param y1 The y-coordinate of the end point of the line 6728a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used to draw the line 6738a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 6748a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void drawLine(SkScalar x0, SkScalar y0, SkScalar x1, SkScalar y1, 6758a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com const SkPaint& paint); 6768a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 6778a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the specified rectangle using the specified paint. The rectangle 6788a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com will be filled or stroked based on the Style in the paint. 6798a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param rect The rect to be drawn 6808a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used to draw the rect 6818a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 6820846f1b1c43f5edebc2d87a19c7bca6574ff41dfreed void drawRect(const SkRect& rect, const SkPaint& paint); 6838a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 6848a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the specified rectangle using the specified paint. The rectangle 6858a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com will be filled or framed based on the Style in the paint. 6868a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param rect The rect to be drawn 6878a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used to draw the rect 6888a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 68987001ed1f6f1d498874f7f4ba39abcf608ae8bf5reed@google.com void drawIRect(const SkIRect& rect, const SkPaint& paint) { 6908a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkRect r; 6918a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com r.set(rect); // promotes the ints to scalars 6928a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this->drawRect(r, paint); 6938a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 6944b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com 6958a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the specified rectangle using the specified paint. The rectangle 6968a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com will be filled or framed based on the Style in the paint. 6978a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param left The left side of the rectangle to be drawn 6988a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param top The top side of the rectangle to be drawn 6998a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param right The right side of the rectangle to be drawn 7008a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param bottom The bottom side of the rectangle to be drawn 7018a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used to draw the rect 7028a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 7038a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void drawRectCoords(SkScalar left, SkScalar top, SkScalar right, 7048a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkScalar bottom, const SkPaint& paint); 7058a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 7068a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the specified oval using the specified paint. The oval will be 7078a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com filled or framed based on the Style in the paint. 7088a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param oval The rectangle bounds of the oval to be drawn 7098a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used to draw the oval 7108a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 7110846f1b1c43f5edebc2d87a19c7bca6574ff41dfreed void drawOval(const SkRect& oval, const SkPaint&); 7124ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com 7134ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com /** 7144ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * Draw the specified RRect using the specified paint The rrect will be filled or stroked 7154ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * based on the Style in the paint. 7164ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * 7174ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * @param rrect The round-rect to draw 7184ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * @param paint The paint used to draw the round-rect 7194ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com */ 7200846f1b1c43f5edebc2d87a19c7bca6574ff41dfreed void drawRRect(const SkRRect& rrect, const SkPaint& paint); 7218a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 722ed9806f5c972513d4141c9d1b5a04ab78b3af4cbcommit-bot@chromium.org /** 723ed9806f5c972513d4141c9d1b5a04ab78b3af4cbcommit-bot@chromium.org * Draw the annulus formed by the outer and inner rrects. The results 724ed9806f5c972513d4141c9d1b5a04ab78b3af4cbcommit-bot@chromium.org * are undefined if the outer does not contain the inner. 725ed9806f5c972513d4141c9d1b5a04ab78b3af4cbcommit-bot@chromium.org */ 726ed9806f5c972513d4141c9d1b5a04ab78b3af4cbcommit-bot@chromium.org void drawDRRect(const SkRRect& outer, const SkRRect& inner, const SkPaint&); 727ed9806f5c972513d4141c9d1b5a04ab78b3af4cbcommit-bot@chromium.org 7288a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the specified circle using the specified paint. If radius is <= 0, 7298a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com then nothing will be drawn. The circle will be filled 7308a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com or framed based on the Style in the paint. 7318a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param cx The x-coordinate of the center of the cirle to be drawn 7328a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param cy The y-coordinate of the center of the cirle to be drawn 7338a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param radius The radius of the cirle to be drawn 7348a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used to draw the circle 7358a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 7368a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void drawCircle(SkScalar cx, SkScalar cy, SkScalar radius, 7378a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com const SkPaint& paint); 7388a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 7398a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the specified arc, which will be scaled to fit inside the 7408a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com specified oval. If the sweep angle is >= 360, then the oval is drawn 7418a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com completely. Note that this differs slightly from SkPath::arcTo, which 7428a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com treats the sweep angle mod 360. 7438a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param oval The bounds of oval used to define the shape of the arc 7448a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param startAngle Starting angle (in degrees) where the arc begins 7458a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param sweepAngle Sweep angle (in degrees) measured clockwise 7468a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param useCenter true means include the center of the oval. For filling 7478a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this will draw a wedge. False means just use the arc. 7488a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used to draw the arc 7498a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 7508a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void drawArc(const SkRect& oval, SkScalar startAngle, SkScalar sweepAngle, 7518a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com bool useCenter, const SkPaint& paint); 7528a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 7538a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the specified round-rect using the specified paint. The round-rect 7548a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com will be filled or framed based on the Style in the paint. 7558a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param rect The rectangular bounds of the roundRect to be drawn 7568a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param rx The x-radius of the oval used to round the corners 7578a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param ry The y-radius of the oval used to round the corners 7588a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used to draw the roundRect 7598a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 7608a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void drawRoundRect(const SkRect& rect, SkScalar rx, SkScalar ry, 7618a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com const SkPaint& paint); 7628a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 7638a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the specified path using the specified paint. The path will be 7648a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com filled or framed based on the Style in the paint. 7658a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param path The path to be drawn 7668a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used to draw the path 7678a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 7680846f1b1c43f5edebc2d87a19c7bca6574ff41dfreed void drawPath(const SkPath& path, const SkPaint& paint); 7698a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 770d52893cfc8c3fb1187c04c66f6beda66e1bb0b2cpiotaixr /** Draw the specified image, with its top/left corner at (x,y), using the 771d52893cfc8c3fb1187c04c66f6beda66e1bb0b2cpiotaixr specified paint, transformed by the current matrix. 772d52893cfc8c3fb1187c04c66f6beda66e1bb0b2cpiotaixr 773d52893cfc8c3fb1187c04c66f6beda66e1bb0b2cpiotaixr @param image The image to be drawn 774d52893cfc8c3fb1187c04c66f6beda66e1bb0b2cpiotaixr @param left The position of the left side of the image being drawn 775d52893cfc8c3fb1187c04c66f6beda66e1bb0b2cpiotaixr @param top The position of the top side of the image being drawn 776d52893cfc8c3fb1187c04c66f6beda66e1bb0b2cpiotaixr @param paint The paint used to draw the image, or NULL 777d52893cfc8c3fb1187c04c66f6beda66e1bb0b2cpiotaixr */ 7780846f1b1c43f5edebc2d87a19c7bca6574ff41dfreed void drawImage(const SkImage* image, SkScalar left, SkScalar top, const SkPaint* paint = NULL); 779d52893cfc8c3fb1187c04c66f6beda66e1bb0b2cpiotaixr /** Draw the specified image, with the specified matrix applied (before the 780d52893cfc8c3fb1187c04c66f6beda66e1bb0b2cpiotaixr canvas' matrix is applied). 781b5fae93d72c7b6480f83fd8a7b534cd1fdfcd49apiotaixr 782d52893cfc8c3fb1187c04c66f6beda66e1bb0b2cpiotaixr @param image The image to be drawn 783d52893cfc8c3fb1187c04c66f6beda66e1bb0b2cpiotaixr @param src Optional: specify the subset of the image to be drawn 784d52893cfc8c3fb1187c04c66f6beda66e1bb0b2cpiotaixr @param dst The destination rectangle where the scaled/translated 785d52893cfc8c3fb1187c04c66f6beda66e1bb0b2cpiotaixr image will be drawn 786d52893cfc8c3fb1187c04c66f6beda66e1bb0b2cpiotaixr @param paint The paint used to draw the image, or NULL 787d52893cfc8c3fb1187c04c66f6beda66e1bb0b2cpiotaixr */ 7880846f1b1c43f5edebc2d87a19c7bca6574ff41dfreed void drawImageRect(const SkImage* image, const SkRect* src, const SkRect& dst, 7890846f1b1c43f5edebc2d87a19c7bca6574ff41dfreed const SkPaint* paint = NULL); 790b5fae93d72c7b6480f83fd8a7b534cd1fdfcd49apiotaixr 7918a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the specified bitmap, with its top/left corner at (x,y), using the 7928a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com specified paint, transformed by the current matrix. Note: if the paint 7938a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com contains a maskfilter that generates a mask which extends beyond the 7948a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com bitmap's original width/height, then the bitmap will be drawn as if it 7958a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com were in a Shader with CLAMP mode. Thus the color outside of the original 7968a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com width/height will be the edge color replicated. 79791246b9fc7740547d4b1b3f144684483c8e968cdcommit-bot@chromium.org 79891246b9fc7740547d4b1b3f144684483c8e968cdcommit-bot@chromium.org If a shader is present on the paint it will be ignored, except in the 799f20fc24a7def23093a1abd2fc8de4a1302aeb9f8reed@google.com case where the bitmap is kAlpha_8_SkColorType. In that case, the color is 80091246b9fc7740547d4b1b3f144684483c8e968cdcommit-bot@chromium.org generated by the shader. 80191246b9fc7740547d4b1b3f144684483c8e968cdcommit-bot@chromium.org 8028a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param bitmap The bitmap to be drawn 8038a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param left The position of the left side of the bitmap being drawn 8048a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param top The position of the top side of the bitmap being drawn 8058a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used to draw the bitmap, or NULL 8068a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 8070846f1b1c43f5edebc2d87a19c7bca6574ff41dfreed void drawBitmap(const SkBitmap& bitmap, SkScalar left, SkScalar top, 8080846f1b1c43f5edebc2d87a19c7bca6574ff41dfreed const SkPaint* paint = NULL); 8098a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 810eed779d866e1e239bfb9ebc6a225b7345a41adf9commit-bot@chromium.org enum DrawBitmapRectFlags { 81131acc11977815402e4ef2681350f8559285bec97robertphillips@google.com kNone_DrawBitmapRectFlag = 0x0, 8127475811143e190e172bf83d13c4bdba85704b604skia.committer@gmail.com /** 813eed779d866e1e239bfb9ebc6a225b7345a41adf9commit-bot@chromium.org * When filtering is enabled, allow the color samples outside of 8147475811143e190e172bf83d13c4bdba85704b604skia.committer@gmail.com * the src rect (but still in the src bitmap) to bleed into the 815eed779d866e1e239bfb9ebc6a225b7345a41adf9commit-bot@chromium.org * drawn portion 816eed779d866e1e239bfb9ebc6a225b7345a41adf9commit-bot@chromium.org */ 81731acc11977815402e4ef2681350f8559285bec97robertphillips@google.com kBleed_DrawBitmapRectFlag = 0x1, 818eed779d866e1e239bfb9ebc6a225b7345a41adf9commit-bot@chromium.org }; 819eed779d866e1e239bfb9ebc6a225b7345a41adf9commit-bot@chromium.org 8208a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the specified bitmap, with the specified matrix applied (before the 8218a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com canvas' matrix is applied). 8228a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param bitmap The bitmap to be drawn 8238a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param src Optional: specify the subset of the bitmap to be drawn 8248a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param dst The destination rectangle where the scaled/translated 8258a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com image will be drawn 8268a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used to draw the bitmap, or NULL 8278a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 8280846f1b1c43f5edebc2d87a19c7bca6574ff41dfreed void drawBitmapRectToRect(const SkBitmap& bitmap, const SkRect* src, const SkRect& dst, 8290846f1b1c43f5edebc2d87a19c7bca6574ff41dfreed const SkPaint* paint = NULL, 8300846f1b1c43f5edebc2d87a19c7bca6574ff41dfreed DrawBitmapRectFlags flags = kNone_DrawBitmapRectFlag); 8317112173c3c4cd1b1e7da8cdf971d71f01dd91299reed@google.com 8327112173c3c4cd1b1e7da8cdf971d71f01dd91299reed@google.com void drawBitmapRect(const SkBitmap& bitmap, const SkRect& dst, 833eed779d866e1e239bfb9ebc6a225b7345a41adf9commit-bot@chromium.org const SkPaint* paint = NULL) { 83431acc11977815402e4ef2681350f8559285bec97robertphillips@google.com this->drawBitmapRectToRect(bitmap, NULL, dst, paint, kNone_DrawBitmapRectFlag); 8357112173c3c4cd1b1e7da8cdf971d71f01dd91299reed@google.com } 8368a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 8377112173c3c4cd1b1e7da8cdf971d71f01dd91299reed@google.com void drawBitmapRect(const SkBitmap& bitmap, const SkIRect* isrc, 838eed779d866e1e239bfb9ebc6a225b7345a41adf9commit-bot@chromium.org const SkRect& dst, const SkPaint* paint = NULL, 83931acc11977815402e4ef2681350f8559285bec97robertphillips@google.com DrawBitmapRectFlags flags = kNone_DrawBitmapRectFlag) { 8407112173c3c4cd1b1e7da8cdf971d71f01dd91299reed@google.com SkRect realSrcStorage; 8417112173c3c4cd1b1e7da8cdf971d71f01dd91299reed@google.com SkRect* realSrcPtr = NULL; 8427112173c3c4cd1b1e7da8cdf971d71f01dd91299reed@google.com if (isrc) { 8437112173c3c4cd1b1e7da8cdf971d71f01dd91299reed@google.com realSrcStorage.set(*isrc); 8447112173c3c4cd1b1e7da8cdf971d71f01dd91299reed@google.com realSrcPtr = &realSrcStorage; 8457112173c3c4cd1b1e7da8cdf971d71f01dd91299reed@google.com } 846eed779d866e1e239bfb9ebc6a225b7345a41adf9commit-bot@chromium.org this->drawBitmapRectToRect(bitmap, realSrcPtr, dst, paint, flags); 8477112173c3c4cd1b1e7da8cdf971d71f01dd91299reed@google.com } 848c1ad0226087e10b1f300b5a45e3d6fdb23b8d1b8skia.committer@gmail.com 849f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com /** 850f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com * Draw the bitmap stretched differentially to fit into dst. 851f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com * center is a rect within the bitmap, and logically divides the bitmap 852f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com * into 9 sections (3x3). For example, if the middle pixel of a [5x5] 853f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com * bitmap is the "center", then the center-rect should be [2, 2, 3, 3]. 854f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com * 855f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com * If the dst is >= the bitmap size, then... 8569bf380ce7f848dfb5886dd52b82746521454b739robertphillips@google.com * - The 4 corners are not stretched at all. 8579bf380ce7f848dfb5886dd52b82746521454b739robertphillips@google.com * - The sides are stretched in only one axis. 8589bf380ce7f848dfb5886dd52b82746521454b739robertphillips@google.com * - The center is stretched in both axes. 859f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com * Else, for each axis where dst < bitmap, 860f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com * - The corners shrink proportionally 861f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com * - The sides (along the shrink axis) and center are not drawn 862f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com */ 8630846f1b1c43f5edebc2d87a19c7bca6574ff41dfreed void drawBitmapNine(const SkBitmap& bitmap, const SkIRect& center, const SkRect& dst, 8640846f1b1c43f5edebc2d87a19c7bca6574ff41dfreed const SkPaint* paint = NULL); 865f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com 8668a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the specified bitmap, with its top/left corner at (x,y), 8678a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com NOT transformed by the current matrix. Note: if the paint 8688a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com contains a maskfilter that generates a mask which extends beyond the 8698a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com bitmap's original width/height, then the bitmap will be drawn as if it 8708a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com were in a Shader with CLAMP mode. Thus the color outside of the original 8718a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com width/height will be the edge color replicated. 8728a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param bitmap The bitmap to be drawn 8738a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param left The position of the left side of the bitmap being drawn 8748a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param top The position of the top side of the bitmap being drawn 8758a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used to draw the bitmap, or NULL 8768a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 8770846f1b1c43f5edebc2d87a19c7bca6574ff41dfreed void drawSprite(const SkBitmap& bitmap, int left, int top, const SkPaint* paint = NULL); 8788a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 8798a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the text, with origin at (x,y), using the specified paint. 8808a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com The origin is interpreted based on the Align setting in the paint. 8818a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param text The text to be drawn 8828a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param byteLength The number of bytes to read from the text parameter 8838a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param x The x-coordinate of the origin of the text being drawn 8848a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param y The y-coordinate of the origin of the text being drawn 8858a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used for the text (e.g. color, size, style) 8868a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 887f7430ccfc0e7b445a44b840c1453c9ef5988a656reed void drawText(const void* text, size_t byteLength, SkScalar x, SkScalar y, 888f7430ccfc0e7b445a44b840c1453c9ef5988a656reed const SkPaint& paint); 8898a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 8908a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the text, with each character/glyph origin specified by the pos[] 8914b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com array. The origin is interpreted by the Align setting in the paint. 8928a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param text The text to be drawn 8938a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param byteLength The number of bytes to read from the text parameter 8948a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param pos Array of positions, used to position each character 8958a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used for the text (e.g. color, size, style) 8968a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 897f7430ccfc0e7b445a44b840c1453c9ef5988a656reed void drawPosText(const void* text, size_t byteLength, const SkPoint pos[], 898f7430ccfc0e7b445a44b840c1453c9ef5988a656reed const SkPaint& paint); 8994b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com 9008a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the text, with each character/glyph origin specified by the x 9018a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com coordinate taken from the xpos[] array, and the y from the constY param. 9024b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com The origin is interpreted by the Align setting in the paint. 9038a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param text The text to be drawn 9048a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param byteLength The number of bytes to read from the text parameter 9058a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param xpos Array of x-positions, used to position each character 9068a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param constY The shared Y coordinate for all of the positions 9078a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used for the text (e.g. color, size, style) 9088a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 909f7430ccfc0e7b445a44b840c1453c9ef5988a656reed void drawPosTextH(const void* text, size_t byteLength, const SkScalar xpos[], SkScalar constY, 910f7430ccfc0e7b445a44b840c1453c9ef5988a656reed const SkPaint& paint); 9114b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com 9128a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the text, with origin at (x,y), using the specified paint, along 9138a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com the specified path. The paint's Align setting determins where along the 9148a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com path to start the text. 9158a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param text The text to be drawn 9168a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param byteLength The number of bytes to read from the text parameter 9178a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param path The path the text should follow for its baseline 9188a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param hOffset The distance along the path to add to the text's 9198a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com starting position 9208a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param vOffset The distance above(-) or below(+) the path to 9218a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com position the text 9228a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used for the text 9238a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 924f7430ccfc0e7b445a44b840c1453c9ef5988a656reed void drawTextOnPathHV(const void* text, size_t byteLength, const SkPath& path, SkScalar hOffset, 9258a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkScalar vOffset, const SkPaint& paint); 9268a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 9278a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the text, with origin at (x,y), using the specified paint, along 9288a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com the specified path. The paint's Align setting determins where along the 9298a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com path to start the text. 9308a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param text The text to be drawn 9318a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param byteLength The number of bytes to read from the text parameter 9328a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param path The path the text should follow for its baseline 9338a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param matrix (may be null) Applied to the text before it is 9348a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com mapped onto the path 9358a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used for the text 9368a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 937f7430ccfc0e7b445a44b840c1453c9ef5988a656reed void drawTextOnPath(const void* text, size_t byteLength, const SkPath& path, 938f7430ccfc0e7b445a44b840c1453c9ef5988a656reed const SkMatrix* matrix, const SkPaint& paint); 9398a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 94000d5c2c6523321d25b32905ff4822f083a4173eefmalita /** Draw the text blob, offset by (x,y), using the specified paint. 94100d5c2c6523321d25b32905ff4822f083a4173eefmalita @param blob The text blob to be drawn 94200d5c2c6523321d25b32905ff4822f083a4173eefmalita @param x The x-offset of the text being drawn 94300d5c2c6523321d25b32905ff4822f083a4173eefmalita @param y The y-offset of the text being drawn 94400d5c2c6523321d25b32905ff4822f083a4173eefmalita @param paint The paint used for the text (e.g. color, size, style) 94500d5c2c6523321d25b32905ff4822f083a4173eefmalita */ 94600d5c2c6523321d25b32905ff4822f083a4173eefmalita void drawTextBlob(const SkTextBlob* blob, SkScalar x, SkScalar y, const SkPaint& paint); 94700d5c2c6523321d25b32905ff4822f083a4173eefmalita 9488a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the picture into this canvas. This method effective brackets the 9498a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com playback of the picture's draw calls with save/restore, so the state 950a44de9617a0a51014bacc4151287995ededcdf62djsollen@google.com of this canvas will be unchanged after this call. 9518a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param picture The recorded drawing commands to playback into this 9528a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com canvas. 9538a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 9549b14f26d0f3a974f3dd626c8354e1db1cfcd322frobertphillips void drawPicture(const SkPicture* picture); 9559b14f26d0f3a974f3dd626c8354e1db1cfcd322frobertphillips 956d5fa1a455aad61f3e99081fe7a9b065cb3b115c6reed /** 957d5fa1a455aad61f3e99081fe7a9b065cb3b115c6reed * Draw the picture into this canvas. 958d5fa1a455aad61f3e99081fe7a9b065cb3b115c6reed * 959d5fa1a455aad61f3e99081fe7a9b065cb3b115c6reed * If matrix is non-null, apply that matrix to the CTM when drawing this picture. This is 960d5fa1a455aad61f3e99081fe7a9b065cb3b115c6reed * logically equivalent to 961d5fa1a455aad61f3e99081fe7a9b065cb3b115c6reed * save/concat/drawPicture/restore 962d5fa1a455aad61f3e99081fe7a9b065cb3b115c6reed * 963d5fa1a455aad61f3e99081fe7a9b065cb3b115c6reed * If paint is non-null, draw the picture into a temporary buffer, and then apply the paint's 964d5fa1a455aad61f3e99081fe7a9b065cb3b115c6reed * alpha/colorfilter/imagefilter/xfermode to that buffer as it is drawn to the canvas. 965d5fa1a455aad61f3e99081fe7a9b065cb3b115c6reed * This is logically equivalent to 966d5fa1a455aad61f3e99081fe7a9b065cb3b115c6reed * saveLayer(paint)/drawPicture/restore 967d5fa1a455aad61f3e99081fe7a9b065cb3b115c6reed */ 968d5fa1a455aad61f3e99081fe7a9b065cb3b115c6reed void drawPicture(const SkPicture*, const SkMatrix* matrix, const SkPaint* paint); 969d5fa1a455aad61f3e99081fe7a9b065cb3b115c6reed 9708a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com enum VertexMode { 9718a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kTriangles_VertexMode, 9728a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kTriangleStrip_VertexMode, 9738a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kTriangleFan_VertexMode 9748a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com }; 9754b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com 9768a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the array of vertices, interpreted as triangles (based on mode). 977559a8833f0eae4af37dc0ffc3ee97e1fb14817b1commit-bot@chromium.org 978559a8833f0eae4af37dc0ffc3ee97e1fb14817b1commit-bot@chromium.org If both textures and vertex-colors are NULL, it strokes hairlines with 979559a8833f0eae4af37dc0ffc3ee97e1fb14817b1commit-bot@chromium.org the paint's color. This behavior is a useful debugging mode to visualize 980559a8833f0eae4af37dc0ffc3ee97e1fb14817b1commit-bot@chromium.org the mesh. 981559a8833f0eae4af37dc0ffc3ee97e1fb14817b1commit-bot@chromium.org 9828a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param vmode How to interpret the array of vertices 9838a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param vertexCount The number of points in the vertices array (and 9848a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com corresponding texs and colors arrays if non-null) 9858a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param vertices Array of vertices for the mesh 9868a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param texs May be null. If not null, specifies the coordinate 987631a59b9393208ed3546e81ca843f2f7da06ca64robertphillips@google.com in _texture_ space (not uv space) for each vertex. 9888a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param colors May be null. If not null, specifies a color for each 9898a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com vertex, to be interpolated across the triangle. 9908a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param xmode Used if both texs and colors are present. In this 9918a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com case the colors are combined with the texture using mode, 9928a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com before being drawn using the paint. If mode is null, then 9938d3cd7a170c810e3816bf00220cbef51e7b16795reed@google.com kModulate_Mode is used. 9948a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param indices If not null, array of indices to reference into the 9958a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com vertex (texs, colors) array. 9968a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param indexCount number of entries in the indices array (if not null) 9974b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com @param paint Specifies the shader/texture if present. 9988a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 9990846f1b1c43f5edebc2d87a19c7bca6574ff41dfreed void drawVertices(VertexMode vmode, int vertexCount, 10000846f1b1c43f5edebc2d87a19c7bca6574ff41dfreed const SkPoint vertices[], const SkPoint texs[], 10010846f1b1c43f5edebc2d87a19c7bca6574ff41dfreed const SkColor colors[], SkXfermode* xmode, 10020846f1b1c43f5edebc2d87a19c7bca6574ff41dfreed const uint16_t indices[], int indexCount, 10030846f1b1c43f5edebc2d87a19c7bca6574ff41dfreed const SkPaint& paint); 10046cfa73a29a26edf1d03bca224ad6860396308ffcmtklein 1005b3c9d1c33caf325aada244204215eb790c228c12dandov /** 1006b3c9d1c33caf325aada244204215eb790c228c12dandov Draw a cubic coons patch 10076cfa73a29a26edf1d03bca224ad6860396308ffcmtklein 1008b3c9d1c33caf325aada244204215eb790c228c12dandov @param cubic specifies the 4 bounding cubic bezier curves of a patch with clockwise order 1009b3c9d1c33caf325aada244204215eb790c228c12dandov starting at the top left corner. 1010b3c9d1c33caf325aada244204215eb790c228c12dandov @param colors specifies the colors for the corners which will be bilerp across the patch, 1011b3c9d1c33caf325aada244204215eb790c228c12dandov their order is clockwise starting at the top left corner. 10126cfa73a29a26edf1d03bca224ad6860396308ffcmtklein @param texCoords specifies the texture coordinates that will be bilerp across the patch, 1013b3c9d1c33caf325aada244204215eb790c228c12dandov their order is the same as the colors. 10146cfa73a29a26edf1d03bca224ad6860396308ffcmtklein @param xmode specifies how are the colors and the textures combined if both of them are 1015b3c9d1c33caf325aada244204215eb790c228c12dandov present. 1016963137b75c0a1fe91f35e9826742f36309f5e65ddandov @param paint Specifies the shader/texture if present. 1017963137b75c0a1fe91f35e9826742f36309f5e65ddandov */ 1018b3c9d1c33caf325aada244204215eb790c228c12dandov void drawPatch(const SkPoint cubics[12], const SkColor colors[4], 1019b3c9d1c33caf325aada244204215eb790c228c12dandov const SkPoint texCoords[4], SkXfermode* xmode, const SkPaint& paint); 10208a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 10213cb3840c9af6f70896cf5565a38d4ee03c02d767reed /** 10223cb3840c9af6f70896cf5565a38d4ee03c02d767reed * Draw the contents of this drawable into the canvas. If the canvas is async 10233cb3840c9af6f70896cf5565a38d4ee03c02d767reed * (e.g. it is recording into a picture) then the drawable will be referenced instead, 10243cb3840c9af6f70896cf5565a38d4ee03c02d767reed * to have its draw() method called when the picture is finalized. 10253cb3840c9af6f70896cf5565a38d4ee03c02d767reed * 10263cb3840c9af6f70896cf5565a38d4ee03c02d767reed * If the intent is to force the contents of the drawable into this canvas immediately, 10273cb3840c9af6f70896cf5565a38d4ee03c02d767reed * then drawable->draw(canvas) may be called. 10283cb3840c9af6f70896cf5565a38d4ee03c02d767reed */ 10293cb3840c9af6f70896cf5565a38d4ee03c02d767reed void drawDrawable(SkDrawable* drawable); 10306a070dc06af4e9f305f9d08a69e34d18ade473cbreed 1031a5d3e77420621c912383c3b22e542d9413d68278skia.committer@gmail.com /** Add comments. beginCommentGroup/endCommentGroup open/close a new group. 1032a5d3e77420621c912383c3b22e542d9413d68278skia.committer@gmail.com Each comment added via addComment is notionally attached to its 10330a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com enclosing group. Top-level comments simply belong to no group. 10340a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com */ 1035c87dd2ce965cd1bbc8a74abe0c141658a469d7f2djsollen virtual void beginCommentGroup(const char* /*description*/) { 10360a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com // do nothing. Subclasses may do something 10370a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com } 1038c87dd2ce965cd1bbc8a74abe0c141658a469d7f2djsollen virtual void addComment(const char* /*kywd*/, const char* /*value*/) { 10390a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com // do nothing. Subclasses may do something 10400a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com } 10410a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com virtual void endCommentGroup() { 10420a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com // do nothing. Subclasses may do something 10430a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com } 10440a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com 10458a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com ////////////////////////////////////////////////////////////////////////// 10464b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com 10478a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Get the current filter object. The filter's reference count is not 1048dc3381fc8194a6192af39539c6ac9787b20209d3reed@android.com affected. The filter is saved/restored, just like the matrix and clip. 10498a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @return the canvas' filter (or NULL). 10508a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 10518a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkDrawFilter* getDrawFilter() const; 10524b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com 10538a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Set the new filter (or NULL). Pass NULL to clear any existing filter. 10548a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com As a convenience, the parameter is returned. If an existing filter 10558a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com exists, its refcnt is decrement. If the new filter is not null, its 1056dc3381fc8194a6192af39539c6ac9787b20209d3reed@android.com refcnt is incremented. The filter is saved/restored, just like the 1057dc3381fc8194a6192af39539c6ac9787b20209d3reed@android.com matrix and clip. 10588a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param filter the new filter (or NULL) 10598a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @return the new filter 10608a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 10618a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com virtual SkDrawFilter* setDrawFilter(SkDrawFilter* filter); 10628a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 10638a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com ////////////////////////////////////////////////////////////////////////// 10648a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 1065754de5f65b466f721d952a379194cc94de376f42reed@google.com /** 1066754de5f65b466f721d952a379194cc94de376f42reed@google.com * Return true if the current clip is empty (i.e. nothing will draw). 1067754de5f65b466f721d952a379194cc94de376f42reed@google.com * Note: this is not always a free call, so it should not be used 1068754de5f65b466f721d952a379194cc94de376f42reed@google.com * more often than necessary. However, once the canvas has computed this 1069754de5f65b466f721d952a379194cc94de376f42reed@google.com * result, subsequent calls will be cheap (until the clip state changes, 1070754de5f65b466f721d952a379194cc94de376f42reed@google.com * which can happen on any clip..() or restore() call. 1071754de5f65b466f721d952a379194cc94de376f42reed@google.com */ 10728f90a892c5130d4d26b5588e1ff151d01a40688arobertphillips@google.com virtual bool isClipEmpty() const; 1073754de5f65b466f721d952a379194cc94de376f42reed@google.com 10745c70cdca5efe541b70d010e91607bf8626ea49cacommit-bot@chromium.org /** 10755c70cdca5efe541b70d010e91607bf8626ea49cacommit-bot@chromium.org * Returns true if the current clip is just a (non-empty) rectangle. 10765c70cdca5efe541b70d010e91607bf8626ea49cacommit-bot@chromium.org * Returns false if the clip is empty, or if it is complex. 10775c70cdca5efe541b70d010e91607bf8626ea49cacommit-bot@chromium.org */ 10785c70cdca5efe541b70d010e91607bf8626ea49cacommit-bot@chromium.org virtual bool isClipRect() const; 10795c70cdca5efe541b70d010e91607bf8626ea49cacommit-bot@chromium.org 10808a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Return the current matrix on the canvas. 10818a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com This does not account for the translate in any of the devices. 10828a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @return The current matrix on the canvas. 10838a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 1084a907ac3e3e3458fbb5d673c3feafb31fd7647b38junov@chromium.org const SkMatrix& getTotalMatrix() const; 10858a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 108640a1ae4df28810aa5aa5cf2627d8387b2dfb867arobertphillips@google.com /** Return the clip stack. The clip stack stores all the individual 108740a1ae4df28810aa5aa5cf2627d8387b2dfb867arobertphillips@google.com * clips organized by the save/restore frame in which they were 108840a1ae4df28810aa5aa5cf2627d8387b2dfb867arobertphillips@google.com * added. 108940a1ae4df28810aa5aa5cf2627d8387b2dfb867arobertphillips@google.com * @return the current clip stack ("list" of individual clip elements) 109040a1ae4df28810aa5aa5cf2627d8387b2dfb867arobertphillips@google.com */ 109140a1ae4df28810aa5aa5cf2627d8387b2dfb867arobertphillips@google.com const SkClipStack* getClipStack() const { 1092de358a9946fb6cffa905c7aa0e5f29cf6960b927joshualitt return fClipStack; 109340a1ae4df28810aa5aa5cf2627d8387b2dfb867arobertphillips@google.com } 109440a1ae4df28810aa5aa5cf2627d8387b2dfb867arobertphillips@google.com 1095c3b589a24eb4d567a906189f882c259ecf5c2f58fmalita typedef SkCanvasClipVisitor ClipVisitor; 10965e2457ef2eba0c3f2e4c8fc89be7f36659e4f3b1reed@google.com /** 109790c07ea1d0aa6b7f20252c43fe23ee5ddc1d23cbreed@google.com * Replays the clip operations, back to front, that have been applied to 109890c07ea1d0aa6b7f20252c43fe23ee5ddc1d23cbreed@google.com * the canvas, calling the appropriate method on the visitor for each 109990c07ea1d0aa6b7f20252c43fe23ee5ddc1d23cbreed@google.com * clip. All clips have already been transformed into device space. 11007d7ca79c3e6e6be7b7849b0d9a7fe26effb89c38reed@google.com */ 110190c07ea1d0aa6b7f20252c43fe23ee5ddc1d23cbreed@google.com void replayClips(ClipVisitor*) const; 11028a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 11038a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /////////////////////////////////////////////////////////////////////////// 11048a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 11058a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** After calling saveLayer(), there can be any number of devices that make 11068a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com up the top-most drawing area. LayerIter can be used to iterate through 11078a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com those devices. Note that the iterator is only valid until the next API 11088a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com call made on the canvas. Ownership of all pointers in the iterator stays 11098a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com with the canvas, so none of them should be modified or deleted. 11108a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 11117ffb1b21abcc7bbed5a0fc711f6dd7b9dbb4f577ctguil@chromium.org class SK_API LayerIter /*: SkNoncopyable*/ { 11128a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com public: 11138a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Initialize iterator with canvas, and set values for 1st device */ 11148a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com LayerIter(SkCanvas*, bool skipEmptyClips); 11158a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com ~LayerIter(); 11164b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com 11178a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Return true if the iterator is done */ 11188a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com bool done() const { return fDone; } 11198a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Cycle to the next device */ 11208a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void next(); 11214b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com 11228a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com // These reflect the current device in the iterator 11238a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 11241f2f338e23789f3eef168dcbd8171a28820ba6c1robertphillips@google.com SkBaseDevice* device() const; 11258a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com const SkMatrix& matrix() const; 11268a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com const SkRegion& clip() const; 11278a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com const SkPaint& paint() const; 11288a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com int x() const; 11298a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com int y() const; 11304b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com 11318a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com private: 11328a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com // used to embed the SkDrawIter object directly in our instance, w/o 11338a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com // having to expose that class def to the public. There is an assert 11348a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com // in our constructor to ensure that fStorage is large enough 11358a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com // (though needs to be a compile-time-assert!). We use intptr_t to work 11368a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com // safely with 32 and 64 bit machines (to ensure the storage is enough) 1137f2b98d67dcb6fcb3120feede9c72016fc7b3ead8reed@android.com intptr_t fStorage[32]; 11388a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com class SkDrawIter* fImpl; // this points at fStorage 11398a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkPaint fDefaultPaint; 11408a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com bool fDone; 11418a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com }; 11428a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 11435c70cdca5efe541b70d010e91607bf8626ea49cacommit-bot@chromium.org // don't call 11449c135db83d198e7d8200027c7d2cf60f38517ee3reed@google.com GrRenderTarget* internal_private_accessTopLayerRenderTarget(); 11455c70cdca5efe541b70d010e91607bf8626ea49cacommit-bot@chromium.org 1146d990e2f14f14c36c3d0beb303dd0953c7aa1fcfareed // don't call 1147d990e2f14f14c36c3d0beb303dd0953c7aa1fcfareed static void Internal_Private_SetIgnoreSaveLayerBounds(bool); 1148d990e2f14f14c36c3d0beb303dd0953c7aa1fcfareed static bool Internal_Private_GetIgnoreSaveLayerBounds(); 11490acf1b4b3645772d220c720313821bac389751b5reed static void Internal_Private_SetTreatSpriteAsBitmap(bool); 11500acf1b4b3645772d220c720313821bac389751b5reed static bool Internal_Private_GetTreatSpriteAsBitmap(); 1151d990e2f14f14c36c3d0beb303dd0953c7aa1fcfareed 11528a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comprotected: 115376f10a3bd936af7dbe2b5873d5a7eedd73cdc5dareed@google.com // default impl defers to getDevice()->newSurface(info) 11544a8126e7f81384526629b1e21bf89b632ea13cd9reed virtual SkSurface* onNewSurface(const SkImageInfo&, const SkSurfaceProps&); 115576f10a3bd936af7dbe2b5873d5a7eedd73cdc5dareed@google.com 1156c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org // default impl defers to its device 1157c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org virtual const void* onPeekPixels(SkImageInfo*, size_t* rowBytes); 11589c135db83d198e7d8200027c7d2cf60f38517ee3reed@google.com virtual void* onAccessTopLayerPixels(SkImageInfo*, size_t* rowBytes); 1159c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org 1160e54a23fcfa42b2fc9d320650de72bcb2d9566b2dcommit-bot@chromium.org // Subclass save/restore notifiers. 1161e54a23fcfa42b2fc9d320650de72bcb2d9566b2dcommit-bot@chromium.org // Overriders should call the corresponding INHERITED method up the inheritance chain. 1162e54a23fcfa42b2fc9d320650de72bcb2d9566b2dcommit-bot@chromium.org // willSaveLayer()'s return value may suppress full layer allocation. 1163e54a23fcfa42b2fc9d320650de72bcb2d9566b2dcommit-bot@chromium.org enum SaveLayerStrategy { 1164e54a23fcfa42b2fc9d320650de72bcb2d9566b2dcommit-bot@chromium.org kFullLayer_SaveLayerStrategy, 1165e54a23fcfa42b2fc9d320650de72bcb2d9566b2dcommit-bot@chromium.org kNoLayer_SaveLayerStrategy 1166e54a23fcfa42b2fc9d320650de72bcb2d9566b2dcommit-bot@chromium.org }; 1167e54a23fcfa42b2fc9d320650de72bcb2d9566b2dcommit-bot@chromium.org 11686ca763f362f25500ffeee0cc0b5dd2b58e9f2a79fmalita virtual void willSave() {} 1169fc6dfbab7565bb02db50f38f21b2c7d6c8f61c5ccommit-bot@chromium.org virtual SaveLayerStrategy willSaveLayer(const SkRect*, const SkPaint*, SaveFlags) { 1170fc6dfbab7565bb02db50f38f21b2c7d6c8f61c5ccommit-bot@chromium.org return kFullLayer_SaveLayerStrategy; 1171fc6dfbab7565bb02db50f38f21b2c7d6c8f61c5ccommit-bot@chromium.org } 1172fc6dfbab7565bb02db50f38f21b2c7d6c8f61c5ccommit-bot@chromium.org virtual void willRestore() {} 11736cfa73a29a26edf1d03bca224ad6860396308ffcmtklein virtual void didRestore() {} 1174fc6dfbab7565bb02db50f38f21b2c7d6c8f61c5ccommit-bot@chromium.org virtual void didConcat(const SkMatrix&) {} 1175fc6dfbab7565bb02db50f38f21b2c7d6c8f61c5ccommit-bot@chromium.org virtual void didSetMatrix(const SkMatrix&) {} 117644c48d062f7996b5b46917e1b312a32ad101f326commit-bot@chromium.org 1177ed9806f5c972513d4141c9d1b5a04ab78b3af4cbcommit-bot@chromium.org virtual void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&); 1178ed9806f5c972513d4141c9d1b5a04ab78b3af4cbcommit-bot@chromium.org 1179e0d9ce890e67d02727ac2811bb456ddb64f827d4reed@google.com virtual void onDrawText(const void* text, size_t byteLength, SkScalar x, 1180e0d9ce890e67d02727ac2811bb456ddb64f827d4reed@google.com SkScalar y, const SkPaint& paint); 1181b0430d024572b1a5e5d7b80e406c668e975e3030skia.committer@gmail.com 1182e0d9ce890e67d02727ac2811bb456ddb64f827d4reed@google.com virtual void onDrawPosText(const void* text, size_t byteLength, 1183e0d9ce890e67d02727ac2811bb456ddb64f827d4reed@google.com const SkPoint pos[], const SkPaint& paint); 1184b0430d024572b1a5e5d7b80e406c668e975e3030skia.committer@gmail.com 1185e0d9ce890e67d02727ac2811bb456ddb64f827d4reed@google.com virtual void onDrawPosTextH(const void* text, size_t byteLength, 1186e0d9ce890e67d02727ac2811bb456ddb64f827d4reed@google.com const SkScalar xpos[], SkScalar constY, 1187e0d9ce890e67d02727ac2811bb456ddb64f827d4reed@google.com const SkPaint& paint); 1188b0430d024572b1a5e5d7b80e406c668e975e3030skia.committer@gmail.com 1189e0d9ce890e67d02727ac2811bb456ddb64f827d4reed@google.com virtual void onDrawTextOnPath(const void* text, size_t byteLength, 1190e0d9ce890e67d02727ac2811bb456ddb64f827d4reed@google.com const SkPath& path, const SkMatrix* matrix, 1191e0d9ce890e67d02727ac2811bb456ddb64f827d4reed@google.com const SkPaint& paint); 11926cfa73a29a26edf1d03bca224ad6860396308ffcmtklein 119300d5c2c6523321d25b32905ff4822f083a4173eefmalita virtual void onDrawTextBlob(const SkTextBlob* blob, SkScalar x, SkScalar y, 119400d5c2c6523321d25b32905ff4822f083a4173eefmalita const SkPaint& paint); 119500d5c2c6523321d25b32905ff4822f083a4173eefmalita 1196b3c9d1c33caf325aada244204215eb790c228c12dandov virtual void onDrawPatch(const SkPoint cubics[12], const SkColor colors[4], 1197b3c9d1c33caf325aada244204215eb790c228c12dandov const SkPoint texCoords[4], SkXfermode* xmode, const SkPaint& paint); 1198e0d9ce890e67d02727ac2811bb456ddb64f827d4reed@google.com 11993cb3840c9af6f70896cf5565a38d4ee03c02d767reed virtual void onDrawDrawable(SkDrawable*); 12006a070dc06af4e9f305f9d08a69e34d18ade473cbreed 120141af966ab338e95eee81ab618ab28195075338f7reed virtual void onDrawPaint(const SkPaint&); 120241af966ab338e95eee81ab618ab28195075338f7reed virtual void onDrawRect(const SkRect&, const SkPaint&); 120341af966ab338e95eee81ab618ab28195075338f7reed virtual void onDrawOval(const SkRect&, const SkPaint&); 120441af966ab338e95eee81ab618ab28195075338f7reed virtual void onDrawRRect(const SkRRect&, const SkPaint&); 120541af966ab338e95eee81ab618ab28195075338f7reed virtual void onDrawPoints(PointMode, size_t count, const SkPoint pts[], const SkPaint&); 120641af966ab338e95eee81ab618ab28195075338f7reed virtual void onDrawVertices(VertexMode, int vertexCount, const SkPoint vertices[], 120741af966ab338e95eee81ab618ab28195075338f7reed const SkPoint texs[], const SkColor colors[], SkXfermode*, 120841af966ab338e95eee81ab618ab28195075338f7reed const uint16_t indices[], int indexCount, const SkPaint&); 120941af966ab338e95eee81ab618ab28195075338f7reed virtual void onDrawPath(const SkPath&, const SkPaint&); 121041af966ab338e95eee81ab618ab28195075338f7reed virtual void onDrawImage(const SkImage*, SkScalar dx, SkScalar dy, const SkPaint*); 121141af966ab338e95eee81ab618ab28195075338f7reed virtual void onDrawImageRect(const SkImage*, const SkRect*, const SkRect&, const SkPaint*); 121241af966ab338e95eee81ab618ab28195075338f7reed virtual void onDrawBitmap(const SkBitmap&, SkScalar dx, SkScalar dy, const SkPaint*); 121341af966ab338e95eee81ab618ab28195075338f7reed virtual void onDrawBitmapRect(const SkBitmap&, const SkRect*, const SkRect&, const SkPaint*, 121441af966ab338e95eee81ab618ab28195075338f7reed DrawBitmapRectFlags); 121541af966ab338e95eee81ab618ab28195075338f7reed virtual void onDrawBitmapNine(const SkBitmap&, const SkIRect& center, const SkRect& dst, 121641af966ab338e95eee81ab618ab28195075338f7reed const SkPaint*); 121741af966ab338e95eee81ab618ab28195075338f7reed virtual void onDrawSprite(const SkBitmap&, int left, int top, const SkPaint*); 121841af966ab338e95eee81ab618ab28195075338f7reed 12198f90a892c5130d4d26b5588e1ff151d01a40688arobertphillips@google.com enum ClipEdgeStyle { 12208f90a892c5130d4d26b5588e1ff151d01a40688arobertphillips@google.com kHard_ClipEdgeStyle, 12218f90a892c5130d4d26b5588e1ff151d01a40688arobertphillips@google.com kSoft_ClipEdgeStyle 12228f90a892c5130d4d26b5588e1ff151d01a40688arobertphillips@google.com }; 12238f90a892c5130d4d26b5588e1ff151d01a40688arobertphillips@google.com 12248f90a892c5130d4d26b5588e1ff151d01a40688arobertphillips@google.com virtual void onClipRect(const SkRect& rect, SkRegion::Op op, ClipEdgeStyle edgeStyle); 12258f90a892c5130d4d26b5588e1ff151d01a40688arobertphillips@google.com virtual void onClipRRect(const SkRRect& rrect, SkRegion::Op op, ClipEdgeStyle edgeStyle); 12268f90a892c5130d4d26b5588e1ff151d01a40688arobertphillips@google.com virtual void onClipPath(const SkPath& path, SkRegion::Op op, ClipEdgeStyle edgeStyle); 12278f90a892c5130d4d26b5588e1ff151d01a40688arobertphillips@google.com virtual void onClipRegion(const SkRegion& deviceRgn, SkRegion::Op op); 12288f90a892c5130d4d26b5588e1ff151d01a40688arobertphillips@google.com 122928361fad1054d59ed4e6a320c7a8b8782a1487c7commit-bot@chromium.org virtual void onDiscard(); 123028361fad1054d59ed4e6a320c7a8b8782a1487c7commit-bot@chromium.org 1231d5fa1a455aad61f3e99081fe7a9b065cb3b115c6reed virtual void onDrawPicture(const SkPicture*, const SkMatrix*, const SkPaint*); 12329b14f26d0f3a974f3dd626c8354e1db1cfcd322frobertphillips 123374b461961607fa57a150a9282c410ef0cab38764vandebo@chromium.org // Returns the canvas to be used by DrawIter. Default implementation 12344370aedf7f55af74e9ebb4ad1c2e010c08236dfajunov@google.com // returns this. Subclasses that encapsulate an indirect canvas may 12354370aedf7f55af74e9ebb4ad1c2e010c08236dfajunov@google.com // need to overload this method. The impl must keep track of this, as it 12364370aedf7f55af74e9ebb4ad1c2e010c08236dfajunov@google.com // is not released or deleted by the caller. 12374370aedf7f55af74e9ebb4ad1c2e010c08236dfajunov@google.com virtual SkCanvas* canvasForDrawIter(); 12384370aedf7f55af74e9ebb4ad1c2e010c08236dfajunov@google.com 1239a907ac3e3e3458fbb5d673c3feafb31fd7647b38junov@chromium.org // Clip rectangle bounds. Called internally by saveLayer. 1240a907ac3e3e3458fbb5d673c3feafb31fd7647b38junov@chromium.org // returns false if the entire rectangle is entirely clipped out 1241c4b12f19a46946e1c02f3525e0ea4902b09feac5senorblanco@chromium.org // If non-NULL, The imageFilter parameter will be used to expand the clip 1242c4b12f19a46946e1c02f3525e0ea4902b09feac5senorblanco@chromium.org // and offscreen bounds for any margin required by the filter DAG. 1243a907ac3e3e3458fbb5d673c3feafb31fd7647b38junov@chromium.org bool clipRectBounds(const SkRect* bounds, SaveFlags flags, 1244c4b12f19a46946e1c02f3525e0ea4902b09feac5senorblanco@chromium.org SkIRect* intersection, 1245c4b12f19a46946e1c02f3525e0ea4902b09feac5senorblanco@chromium.org const SkImageFilter* imageFilter = NULL); 1246a907ac3e3e3458fbb5d673c3feafb31fd7647b38junov@chromium.org 124797af1a64ae6bdddd346d8babfd9f188279dd6644reed@google.com // notify our surface (if we have one) that we are about to draw, so it 124897af1a64ae6bdddd346d8babfd9f188279dd6644reed@google.com // can perform copy-on-write or invalidate any cached images 124997af1a64ae6bdddd346d8babfd9f188279dd6644reed@google.com void predrawNotify(); 125097af1a64ae6bdddd346d8babfd9f188279dd6644reed@google.com 12518a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comprivate: 12528a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com class MCRec; 12538a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 1254de358a9946fb6cffa905c7aa0e5f29cf6960b927joshualitt SkAutoTUnref<SkClipStack> fClipStack; 12558a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkDeque fMCStack; 12568a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com // points to top of stack 12578a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com MCRec* fMCRec; 12588a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com // the first N recs that can fit here mean we won't call malloc 12598a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com uint32_t fMCRecStorage[32]; 12608a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 12614a8126e7f81384526629b1e21bf89b632ea13cd9reed const SkSurfaceProps fProps; 12624a8126e7f81384526629b1e21bf89b632ea13cd9reed 12632ff1fcede1e9525285c5de1f35fb2dcb0fab32bdreed int fSaveCount; // value returned by getSaveCount() 12648a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 126574bb77ee4c747b8c70c5c613987c9f93df71df06mike@reedtribe.org SkMetaData* fMetaData; 126674bb77ee4c747b8c70c5c613987c9f93df71df06mike@reedtribe.org 126797af1a64ae6bdddd346d8babfd9f188279dd6644reed@google.com SkSurface_Base* fSurfaceBase; 126897af1a64ae6bdddd346d8babfd9f188279dd6644reed@google.com SkSurface_Base* getSurfaceBase() const { return fSurfaceBase; } 126997af1a64ae6bdddd346d8babfd9f188279dd6644reed@google.com void setSurfaceBase(SkSurface_Base* sb) { 127097af1a64ae6bdddd346d8babfd9f188279dd6644reed@google.com fSurfaceBase = sb; 127197af1a64ae6bdddd346d8babfd9f188279dd6644reed@google.com } 127297af1a64ae6bdddd346d8babfd9f188279dd6644reed@google.com friend class SkSurface_Base; 127345c3db827d5bcb7c08bf49eff035be667332ec05junov@chromium.org friend class SkSurface_Gpu; 1274fc84359aa920567e72742877a1249f52d076ad35skia.committer@gmail.com 12758a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com bool fDeviceCMDirty; // cleared by updateDeviceCMCache() 12768a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void updateDeviceCMCache(); 12778a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 12782ff1fcede1e9525285c5de1f35fb2dcb0fab32bdreed void doSave(); 12792ff1fcede1e9525285c5de1f35fb2dcb0fab32bdreed void checkForDeferredSave(); 12802ff1fcede1e9525285c5de1f35fb2dcb0fab32bdreed 12819c135db83d198e7d8200027c7d2cf60f38517ee3reed@google.com friend class SkDrawIter; // needs setupDrawForLayerDevice() 12828926b169f6a0dfa4c2129a98ec2aee205f0c8527reed@google.com friend class AutoDrawLooper; 12839c135db83d198e7d8200027c7d2cf60f38517ee3reed@google.com friend class SkLua; // needs top layer size and offset 12842a67e123a3e559774a16a58cbe5106bc0fb86740commit-bot@chromium.org friend class SkDebugCanvas; // needs experimental fAllowSimplifyClip 12859c135db83d198e7d8200027c7d2cf60f38517ee3reed@google.com friend class SkDeferredDevice; // needs getTopDevice() 128652d9ac6c92ddf33b3b05eb77ba9509a7aa441657reed friend class SkSurface_Raster; // needs getDevice() 1287d954498c01ccf0417feacf89e45d0c62a06a813breed friend class SkRecorder; // InitFlags 1288d954498c01ccf0417feacf89e45d0c62a06a813breed friend class SkNoSaveLayerCanvas; // InitFlags 12892d97bc139a7de5813468bd3dbfd0037351ae5606fmalita friend class SkPictureImageFilter; // SkCanvas(SkBaseDevice*, SkSurfaceProps*, InitFlags) 1290b5fae93d72c7b6480f83fd8a7b534cd1fdfcd49apiotaixr 1291d954498c01ccf0417feacf89e45d0c62a06a813breed enum InitFlags { 1292d954498c01ccf0417feacf89e45d0c62a06a813breed kDefault_InitFlags = 0, 1293d954498c01ccf0417feacf89e45d0c62a06a813breed kConservativeRasterClip_InitFlag = 1 << 0, 1294d954498c01ccf0417feacf89e45d0c62a06a813breed }; 129578e276889795454891cbba48ab11927968114953reed SkCanvas(const SkIRect& bounds, InitFlags); 12964a8126e7f81384526629b1e21bf89b632ea13cd9reed SkCanvas(SkBaseDevice*, const SkSurfaceProps*, InitFlags); 1297d954498c01ccf0417feacf89e45d0c62a06a813breed 12988f2e791baa1287bd321217c88756695c41699a7ereed // needs gettotalclip() 1299a5414c4a8efc3119ee20fcee96c0bf68a04909c7tfarina friend class SkCanvasStateUtils; 1300b5fae93d72c7b6480f83fd8a7b534cd1fdfcd49apiotaixr 13014a8126e7f81384526629b1e21bf89b632ea13cd9reed // call this each time we attach ourselves to a device 13024a8126e7f81384526629b1e21bf89b632ea13cd9reed // - constructor 13034a8126e7f81384526629b1e21bf89b632ea13cd9reed // - internalSaveLayer 13044a8126e7f81384526629b1e21bf89b632ea13cd9reed void setupDevice(SkBaseDevice*); 13054a8126e7f81384526629b1e21bf89b632ea13cd9reed 1306d954498c01ccf0417feacf89e45d0c62a06a813breed SkBaseDevice* init(SkBaseDevice*, InitFlags); 1307f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com 1308403f8d7a052269583175e945689824838e5e0ef4commit-bot@chromium.org /** 1309403f8d7a052269583175e945689824838e5e0ef4commit-bot@chromium.org * DEPRECATED 1310403f8d7a052269583175e945689824838e5e0ef4commit-bot@chromium.org * 1311403f8d7a052269583175e945689824838e5e0ef4commit-bot@chromium.org * Specify a device for this canvas to draw into. If it is not null, its 1312403f8d7a052269583175e945689824838e5e0ef4commit-bot@chromium.org * reference count is incremented. If the canvas was already holding a 1313403f8d7a052269583175e945689824838e5e0ef4commit-bot@chromium.org * device, its reference count is decremented. The new device is returned. 1314403f8d7a052269583175e945689824838e5e0ef4commit-bot@chromium.org */ 1315403f8d7a052269583175e945689824838e5e0ef4commit-bot@chromium.org SkBaseDevice* setRootDevice(SkBaseDevice* device); 131631acdeabce094e9d42f0d6db8eebcf788aaba11askia.committer@gmail.com 13174ebe3821888d550d8a8b89341ec251ba942f0225bsalomon@google.com /** 13184ebe3821888d550d8a8b89341ec251ba942f0225bsalomon@google.com * Gets the size/origin of the top level layer in global canvas coordinates. We don't want this 13194ebe3821888d550d8a8b89341ec251ba942f0225bsalomon@google.com * to be public because it exposes decisions about layer sizes that are internal to the canvas. 13204ebe3821888d550d8a8b89341ec251ba942f0225bsalomon@google.com */ 13214ebe3821888d550d8a8b89341ec251ba942f0225bsalomon@google.com SkISize getTopLayerSize() const; 13224ebe3821888d550d8a8b89341ec251ba942f0225bsalomon@google.com SkIPoint getTopLayerOrigin() const; 1323403f8d7a052269583175e945689824838e5e0ef4commit-bot@chromium.org 1324f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com // internal methods are not virtual, so they can safely be called by other 1325f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com // canvas apis, without confusing subclasses (like SkPictureRecording) 13269bf380ce7f848dfb5886dd52b82746521454b739robertphillips@google.com void internalDrawBitmap(const SkBitmap&, const SkMatrix& m, const SkPaint* paint); 13277112173c3c4cd1b1e7da8cdf971d71f01dd91299reed@google.com void internalDrawBitmapRect(const SkBitmap& bitmap, const SkRect* src, 1328eed779d866e1e239bfb9ebc6a225b7345a41adf9commit-bot@chromium.org const SkRect& dst, const SkPaint* paint, 1329eed779d866e1e239bfb9ebc6a225b7345a41adf9commit-bot@chromium.org DrawBitmapRectFlags flags); 1330f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com void internalDrawBitmapNine(const SkBitmap& bitmap, const SkIRect& center, 1331f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com const SkRect& dst, const SkPaint* paint); 1332fa6ac938e64fe11b442d05fe8a90ddac2d1951f9bsalomon@google.com void internalDrawPaint(const SkPaint& paint); 13332ff1fcede1e9525285c5de1f35fb2dcb0fab32bdreed void internalSaveLayer(const SkRect* bounds, const SkPaint* paint, 13342ff1fcede1e9525285c5de1f35fb2dcb0fab32bdreed SaveFlags, bool justForImageFilter, SaveLayerStrategy strategy); 13351f2f338e23789f3eef168dcbd8171a28820ba6c1robertphillips@google.com void internalDrawDevice(SkBaseDevice*, int x, int y, const SkPaint*); 1336fa6ac938e64fe11b442d05fe8a90ddac2d1951f9bsalomon@google.com 13378a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com // shared by save() and saveLayer() 13382ff1fcede1e9525285c5de1f35fb2dcb0fab32bdreed void internalSave(); 13398a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void internalRestore(); 134052c748b1691f02f90b27c35bc05074fcef709e66bungeman@google.com static void DrawRect(const SkDraw& draw, const SkPaint& paint, 134152c748b1691f02f90b27c35bc05074fcef709e66bungeman@google.com const SkRect& r, SkScalar textSize); 134252c748b1691f02f90b27c35bc05074fcef709e66bungeman@google.com static void DrawTextDecorations(const SkDraw& draw, const SkPaint& paint, 134352c748b1691f02f90b27c35bc05074fcef709e66bungeman@google.com const char text[], size_t byteLength, 134452c748b1691f02f90b27c35bc05074fcef709e66bungeman@google.com SkScalar x, SkScalar y); 13454b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com 1346fa35f8e6ebc9d98d57d2edc35e4a83556eb75caereed // only for canvasutils 1347fa35f8e6ebc9d98d57d2edc35e4a83556eb75caereed const SkRegion& internal_private_getTotalClip() const; 1348fa35f8e6ebc9d98d57d2edc35e4a83556eb75caereed 13498a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /* These maintain a cache of the clip bounds in local coordinates, 13508a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com (converted to 2s-compliment if floats are slow). 13518a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 1352c0784dbd408596aff13a5d97448f7a9e5d3cf7d9reed@google.com mutable SkRect fCachedLocalClipBounds; 1353c0784dbd408596aff13a5d97448f7a9e5d3cf7d9reed@google.com mutable bool fCachedLocalClipBoundsDirty; 13548f0a7b8e7334187a5d7d5ab7fde5a3c3009555f5caryclark@google.com bool fAllowSoftClip; 135545a75fb4d0ca5daa0ac5e634238970306e3b5838caryclark@google.com bool fAllowSimplifyClip; 1356d954498c01ccf0417feacf89e45d0c62a06a813breed bool fConservativeRasterClip; 13578a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 1358c0784dbd408596aff13a5d97448f7a9e5d3cf7d9reed@google.com const SkRect& getLocalClipBounds() const { 1359c0784dbd408596aff13a5d97448f7a9e5d3cf7d9reed@google.com if (fCachedLocalClipBoundsDirty) { 1360c0784dbd408596aff13a5d97448f7a9e5d3cf7d9reed@google.com if (!this->getClipBounds(&fCachedLocalClipBounds)) { 1361c0784dbd408596aff13a5d97448f7a9e5d3cf7d9reed@google.com fCachedLocalClipBounds.setEmpty(); 1362c0784dbd408596aff13a5d97448f7a9e5d3cf7d9reed@google.com } 1363c0784dbd408596aff13a5d97448f7a9e5d3cf7d9reed@google.com fCachedLocalClipBoundsDirty = false; 13648a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 1365c0784dbd408596aff13a5d97448f7a9e5d3cf7d9reed@google.com return fCachedLocalClipBounds; 13668a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 136745a75fb4d0ca5daa0ac5e634238970306e3b5838caryclark@google.com 13685c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com class AutoValidateClip : ::SkNoncopyable { 13695c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com public: 13705c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com explicit AutoValidateClip(SkCanvas* canvas) : fCanvas(canvas) { 13715c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com fCanvas->validateClip(); 13725c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com } 13735c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com ~AutoValidateClip() { fCanvas->validateClip(); } 13745c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com 13755c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com private: 13765c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com const SkCanvas* fCanvas; 13775c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com }; 13785c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com 13795c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com#ifdef SK_DEBUG 13805c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com void validateClip() const; 13815c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com#else 13825c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com void validateClip() const {} 13835c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com#endif 138415e9d3e66e161ce23df30bc13f8a0c87d196b463robertphillips@google.com 138515e9d3e66e161ce23df30bc13f8a0c87d196b463robertphillips@google.com typedef SkRefCnt INHERITED; 13868a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com}; 13878a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 13888a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com/** Stack helper class to automatically call restoreToCount() on the canvas 13898a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com when this object goes out of scope. Use this to guarantee that the canvas 13908a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com is restored to a known state. 13918a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com*/ 13928a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comclass SkAutoCanvasRestore : SkNoncopyable { 13938a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.compublic: 13942887119a63e314704673b971e9bc9a3461313a2ccommit-bot@chromium.org SkAutoCanvasRestore(SkCanvas* canvas, bool doSave) : fCanvas(canvas), fSaveCount(0) { 13952887119a63e314704673b971e9bc9a3461313a2ccommit-bot@chromium.org if (fCanvas) { 13962887119a63e314704673b971e9bc9a3461313a2ccommit-bot@chromium.org fSaveCount = canvas->getSaveCount(); 13972887119a63e314704673b971e9bc9a3461313a2ccommit-bot@chromium.org if (doSave) { 13982887119a63e314704673b971e9bc9a3461313a2ccommit-bot@chromium.org canvas->save(); 13992887119a63e314704673b971e9bc9a3461313a2ccommit-bot@chromium.org } 14008a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 14018a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 14028a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com ~SkAutoCanvasRestore() { 1403f6c9a5ba5cded8d4f663b13e71e6e1e572322b41reed@google.com if (fCanvas) { 1404f6c9a5ba5cded8d4f663b13e71e6e1e572322b41reed@google.com fCanvas->restoreToCount(fSaveCount); 1405f6c9a5ba5cded8d4f663b13e71e6e1e572322b41reed@google.com } 1406f6c9a5ba5cded8d4f663b13e71e6e1e572322b41reed@google.com } 1407f6c9a5ba5cded8d4f663b13e71e6e1e572322b41reed@google.com 1408f6c9a5ba5cded8d4f663b13e71e6e1e572322b41reed@google.com /** 1409f6c9a5ba5cded8d4f663b13e71e6e1e572322b41reed@google.com * Perform the restore now, instead of waiting for the destructor. Will 1410f6c9a5ba5cded8d4f663b13e71e6e1e572322b41reed@google.com * only do this once. 1411f6c9a5ba5cded8d4f663b13e71e6e1e572322b41reed@google.com */ 1412f6c9a5ba5cded8d4f663b13e71e6e1e572322b41reed@google.com void restore() { 1413f6c9a5ba5cded8d4f663b13e71e6e1e572322b41reed@google.com if (fCanvas) { 1414f6c9a5ba5cded8d4f663b13e71e6e1e572322b41reed@google.com fCanvas->restoreToCount(fSaveCount); 1415f6c9a5ba5cded8d4f663b13e71e6e1e572322b41reed@google.com fCanvas = NULL; 1416f6c9a5ba5cded8d4f663b13e71e6e1e572322b41reed@google.com } 14178a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 14188a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 14198a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comprivate: 14208a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkCanvas* fCanvas; 14218a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com int fSaveCount; 14228a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com}; 1423e61a86cfa00ea393ecc4a71fca94e1d476a37ecccommit-bot@chromium.org#define SkAutoCanvasRestore(...) SK_REQUIRE_LOCAL_VAR(SkAutoCanvasRestore) 14248a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 14250a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com/** Stack helper class to automatically open and close a comment block 14260a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com */ 14270a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.comclass SkAutoCommentBlock : SkNoncopyable { 14280a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.compublic: 14290a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com SkAutoCommentBlock(SkCanvas* canvas, const char* description) { 14300a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com fCanvas = canvas; 143149f085dddff10473b6ebf832a974288300224e60bsalomon if (fCanvas) { 14320a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com fCanvas->beginCommentGroup(description); 14330a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com } 14340a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com } 14350a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com 14360a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com ~SkAutoCommentBlock() { 143749f085dddff10473b6ebf832a974288300224e60bsalomon if (fCanvas) { 14380a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com fCanvas->endCommentGroup(); 14390a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com } 14400a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com } 14410a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com 14420a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.comprivate: 14430a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com SkCanvas* fCanvas; 14440a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com}; 1445e61a86cfa00ea393ecc4a71fca94e1d476a37ecccommit-bot@chromium.org#define SkAutoCommentBlock(...) SK_REQUIRE_LOCAL_VAR(SkAutoCommentBlock) 14460a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com 1447c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org/** 1448c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org * If the caller wants read-only access to the pixels in a canvas, it can just 1449c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org * call canvas->peekPixels(), since that is the fastest way to "peek" at the 1450c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org * pixels on a raster-backed canvas. 1451c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org * 1452c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org * If the canvas has pixels, but they are not readily available to the CPU 1453c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org * (e.g. gpu-backed), then peekPixels() will fail, but readPixels() will 1454c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org * succeed (though be slower, since it will return a copy of the pixels). 1455c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org * 1456c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org * SkAutoROCanvasPixels encapsulates these two techniques, trying first to call 1457c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org * peekPixels() (for performance), but if that fails, calling readPixels() and 1458c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org * storing the copy locally. 1459c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org * 1460c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org * The caller must respect the restrictions associated with peekPixels(), since 1461c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org * that may have been called: The returned information is invalidated if... 1462c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org * - any API is called on the canvas (or its parent surface if present) 1463c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org * - the canvas goes out of scope 1464c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org */ 1465c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.orgclass SkAutoROCanvasPixels : SkNoncopyable { 1466c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.orgpublic: 1467c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org SkAutoROCanvasPixels(SkCanvas* canvas); 1468c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org 1469c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org // returns NULL on failure 1470c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org const void* addr() const { return fAddr; } 147102d6f546161e2c98d69066373cec3f54f3c46252skia.committer@gmail.com 1472c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org // undefined if addr() == NULL 1473c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org size_t rowBytes() const { return fRowBytes; } 147402d6f546161e2c98d69066373cec3f54f3c46252skia.committer@gmail.com 1475c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org // undefined if addr() == NULL 1476c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org const SkImageInfo& info() const { return fInfo; } 1477c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org 1478c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org // helper that, if returns true, installs the pixels into the bitmap. Note 1479c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org // that the bitmap may reference the address returned by peekPixels(), so 1480c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org // the caller must respect the restrictions associated with peekPixels(). 1481c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org bool asROBitmap(SkBitmap*) const; 1482c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org 1483c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.orgprivate: 1484c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org SkBitmap fBitmap; // used if peekPixels() fails 1485c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org const void* fAddr; // NULL on failure 1486c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org SkImageInfo fInfo; 1487c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org size_t fRowBytes; 1488c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org}; 1489c3bd8af6d5722e854feca70c40d92f4954c5b67bcommit-bot@chromium.org 14902a5cd60bfff32c92cf44a8cfc3e8c017b9aee456commit-bot@chromium.orgstatic inline SkCanvas::SaveFlags operator|(const SkCanvas::SaveFlags lhs, 14912a5cd60bfff32c92cf44a8cfc3e8c017b9aee456commit-bot@chromium.org const SkCanvas::SaveFlags rhs) { 149292a8916540b14549213332c5f9f0cd44ec12de75commit-bot@chromium.org return static_cast<SkCanvas::SaveFlags>(static_cast<int>(lhs) | static_cast<int>(rhs)); 14932a5cd60bfff32c92cf44a8cfc3e8c017b9aee456commit-bot@chromium.org} 14942a5cd60bfff32c92cf44a8cfc3e8c017b9aee456commit-bot@chromium.org 14952a5cd60bfff32c92cf44a8cfc3e8c017b9aee456commit-bot@chromium.orgstatic inline SkCanvas::SaveFlags& operator|=(SkCanvas::SaveFlags& lhs, 14962a5cd60bfff32c92cf44a8cfc3e8c017b9aee456commit-bot@chromium.org const SkCanvas::SaveFlags rhs) { 14972a5cd60bfff32c92cf44a8cfc3e8c017b9aee456commit-bot@chromium.org lhs = lhs | rhs; 14982a5cd60bfff32c92cf44a8cfc3e8c017b9aee456commit-bot@chromium.org return lhs; 14992a5cd60bfff32c92cf44a8cfc3e8c017b9aee456commit-bot@chromium.org} 15002a5cd60bfff32c92cf44a8cfc3e8c017b9aee456commit-bot@chromium.org 1501c3b589a24eb4d567a906189f882c259ecf5c2f58fmalitaclass SkCanvasClipVisitor { 1502c3b589a24eb4d567a906189f882c259ecf5c2f58fmalitapublic: 1503c3b589a24eb4d567a906189f882c259ecf5c2f58fmalita virtual ~SkCanvasClipVisitor(); 1504c3b589a24eb4d567a906189f882c259ecf5c2f58fmalita virtual void clipRect(const SkRect&, SkRegion::Op, bool antialias) = 0; 1505c3b589a24eb4d567a906189f882c259ecf5c2f58fmalita virtual void clipRRect(const SkRRect&, SkRegion::Op, bool antialias) = 0; 1506c3b589a24eb4d567a906189f882c259ecf5c2f58fmalita virtual void clipPath(const SkPath&, SkRegion::Op, bool antialias) = 0; 1507c3b589a24eb4d567a906189f882c259ecf5c2f58fmalita}; 15082a5cd60bfff32c92cf44a8cfc3e8c017b9aee456commit-bot@chromium.org 15098a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#endif 1510