SkCanvas.h revision 7ce564cccb246ec56427085872b2e1458fe74bd1
1ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com 28a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com/* 3ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * Copyright 2006 The Android Open Source Project 48a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com * 5ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * Use of this source code is governed by a BSD-style license that can be 6ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * found in the LICENSE file. 78a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 88a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 9ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com 108a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#ifndef SkCanvas_DEFINED 118a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#define SkCanvas_DEFINED 128a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 138a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkTypes.h" 148a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkBitmap.h" 158a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkDeque.h" 165c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com#include "SkClipStack.h" 178a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkPaint.h" 188a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkRefCnt.h" 198a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkPath.h" 208a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkRegion.h" 218a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkScalarCompare.h" 22845fdaca174f4675e9acc164b510e3a5ffa9053creed@android.com#include "SkXfermode.h" 238a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 248a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comclass SkBounder; 251f2f338e23789f3eef168dcbd8171a28820ba6c1robertphillips@google.comclass SkBaseDevice; 268a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comclass SkDraw; 278a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comclass SkDrawFilter; 2874bb77ee4c747b8c70c5c613987c9f93df71df06mike@reedtribe.orgclass SkMetaData; 298a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comclass SkPicture; 304ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.comclass SkRRect; 3197af1a64ae6bdddd346d8babfd9f188279dd6644reed@google.comclass SkSurface_Base; 328a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 338a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com/** \class SkCanvas 348a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 358a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com A Canvas encapsulates all of the state about drawing into a device (bitmap). 368a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com This includes a reference to the device itself, and a stack of matrix/clip 378a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com values. For any given draw call (e.g. drawRect), the geometry of the object 388a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com being drawn is transformed by the concatenation of all the matrices in the 398a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com stack. The transformed geometry is clipped by the intersection of all of 408a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com the clips in the stack. 418a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 428a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com While the Canvas holds the state of the drawing device, the state (style) 438a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com of the object being drawn is held by the Paint, which is provided as a 448a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com parameter to each of the draw() methods. The Paint holds attributes such as 458a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com color, typeface, textSize, strokeWidth, shader (e.g. gradients, patterns), 468a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com etc. 478a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com*/ 487ffb1b21abcc7bbed5a0fc711f6dd7b9dbb4f577ctguil@chromium.orgclass SK_API SkCanvas : public SkRefCnt { 498a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.compublic: 5015e9d3e66e161ce23df30bc13f8a0c87d196b463robertphillips@google.com SK_DECLARE_INST_COUNT(SkCanvas) 5115e9d3e66e161ce23df30bc13f8a0c87d196b463robertphillips@google.com 52cde92111d50a96b6d0f3e166fbac7c9bc6eca349reed@google.com SkCanvas(); 538d84fac294682647694b0d2d8a87ac2bd19b6aabvandebo@chromium.org 546dc745506e6d6cc0936fed4de24443dc1ecb5a34reed@google.com /** Construct a canvas with the specified device to draw into. 55e97f0856a8044866b12527819d14cdfbcdfd96f2bsalomon@google.com 568d84fac294682647694b0d2d8a87ac2bd19b6aabvandebo@chromium.org @param device Specifies a device for the canvas to draw into. 578d84fac294682647694b0d2d8a87ac2bd19b6aabvandebo@chromium.org */ 581f2f338e23789f3eef168dcbd8171a28820ba6c1robertphillips@google.com explicit SkCanvas(SkBaseDevice* device); 598d84fac294682647694b0d2d8a87ac2bd19b6aabvandebo@chromium.org 608d84fac294682647694b0d2d8a87ac2bd19b6aabvandebo@chromium.org /** Deprecated - Construct a canvas with the specified bitmap to draw into. 618a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param bitmap Specifies a bitmap for the canvas to draw into. Its 628a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com structure are copied to the canvas. 638a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 648a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com explicit SkCanvas(const SkBitmap& bitmap); 658a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com virtual ~SkCanvas(); 668a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 6774bb77ee4c747b8c70c5c613987c9f93df71df06mike@reedtribe.org SkMetaData& getMetaData(); 6874bb77ee4c747b8c70c5c613987c9f93df71df06mike@reedtribe.org 698a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /////////////////////////////////////////////////////////////////////////// 708a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 71210ce003a5ec039dda80de0569fb47ca4efc4dc7reed@google.com /** 72bf6c1e4aff4d233f6502157fb73459cf69d0ab37junov@chromium.org * Trigger the immediate execution of all pending draw operations. 73bf6c1e4aff4d233f6502157fb73459cf69d0ab37junov@chromium.org */ 74bf6c1e4aff4d233f6502157fb73459cf69d0ab37junov@chromium.org void flush(); 75bf6c1e4aff4d233f6502157fb73459cf69d0ab37junov@chromium.org 76bf6c1e4aff4d233f6502157fb73459cf69d0ab37junov@chromium.org /** 77210ce003a5ec039dda80de0569fb47ca4efc4dc7reed@google.com * Return the width/height of the underlying device. The current drawable 78210ce003a5ec039dda80de0569fb47ca4efc4dc7reed@google.com * area may be small (due to clipping or saveLayer). For a canvas with 79210ce003a5ec039dda80de0569fb47ca4efc4dc7reed@google.com * no device, 0,0 will be returned. 80210ce003a5ec039dda80de0569fb47ca4efc4dc7reed@google.com */ 81210ce003a5ec039dda80de0569fb47ca4efc4dc7reed@google.com SkISize getDeviceSize() const; 82210ce003a5ec039dda80de0569fb47ca4efc4dc7reed@google.com 838a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Return the canvas' device object, which may be null. The device holds 848a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com the bitmap of the pixels that the canvas draws into. The reference count 858a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com of the returned device is not changed by this call. 868a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 871f2f338e23789f3eef168dcbd8171a28820ba6c1robertphillips@google.com SkBaseDevice* getDevice() const; 888a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 899266fed56a46a4edc710a52c7be8d46fd7c2bc7areed@google.com /** 909266fed56a46a4edc710a52c7be8d46fd7c2bc7areed@google.com * saveLayer() can create another device (which is later drawn onto 919266fed56a46a4edc710a52c7be8d46fd7c2bc7areed@google.com * the previous device). getTopDevice() returns the top-most device current 929266fed56a46a4edc710a52c7be8d46fd7c2bc7areed@google.com * installed. Note that this can change on other calls like save/restore, 939266fed56a46a4edc710a52c7be8d46fd7c2bc7areed@google.com * so do not access this device after subsequent canvas calls. 949266fed56a46a4edc710a52c7be8d46fd7c2bc7areed@google.com * The reference count of the device is not changed. 950b53d59a24f667350b4282f88470713902409030reed@google.com * 960b53d59a24f667350b4282f88470713902409030reed@google.com * @param updateMatrixClip If this is true, then before the device is 970b53d59a24f667350b4282f88470713902409030reed@google.com * returned, we ensure that its has been notified about the current 980b53d59a24f667350b4282f88470713902409030reed@google.com * matrix and clip. Note: this happens automatically when the device 990b53d59a24f667350b4282f88470713902409030reed@google.com * is drawn to, but is optional here, as there is a small perf hit 1000b53d59a24f667350b4282f88470713902409030reed@google.com * sometimes. 1019266fed56a46a4edc710a52c7be8d46fd7c2bc7areed@google.com */ 1021f2f338e23789f3eef168dcbd8171a28820ba6c1robertphillips@google.com SkBaseDevice* getTopDevice(bool updateMatrixClip = false) const; 1039266fed56a46a4edc710a52c7be8d46fd7c2bc7areed@google.com 104f2b98d67dcb6fcb3120feede9c72016fc7b3ead8reed@android.com /** 105cde92111d50a96b6d0f3e166fbac7c9bc6eca349reed@google.com * Shortcut for getDevice()->createCompatibleDevice(...). 106cde92111d50a96b6d0f3e166fbac7c9bc6eca349reed@google.com * If getDevice() == NULL, this method does nothing, and returns NULL. 107e97f0856a8044866b12527819d14cdfbcdfd96f2bsalomon@google.com */ 1081f2f338e23789f3eef168dcbd8171a28820ba6c1robertphillips@google.com SkBaseDevice* createCompatibleDevice(SkBitmap::Config config, 1091f2f338e23789f3eef168dcbd8171a28820ba6c1robertphillips@google.com int width, int height, 1101f2f338e23789f3eef168dcbd8171a28820ba6c1robertphillips@google.com bool isOpaque); 111e97f0856a8044866b12527819d14cdfbcdfd96f2bsalomon@google.com 1124b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com /////////////////////////////////////////////////////////////////////////// 1134b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com 114daba14b7d4fc96b915c45d82713b22729c0d0f37bsalomon@google.com /** 115d58a1cd00b969a7755c375f55cf80f4d49d3047bbsalomon@google.com * This enum can be used with read/writePixels to perform a pixel ops to or 116d58a1cd00b969a7755c375f55cf80f4d49d3047bbsalomon@google.com * from an 8888 config other than Skia's native config (SkPMColor). There 117d58a1cd00b969a7755c375f55cf80f4d49d3047bbsalomon@google.com * are three byte orders supported: native, BGRA, and RGBA. Each has a 118d58a1cd00b969a7755c375f55cf80f4d49d3047bbsalomon@google.com * premultiplied and unpremultiplied variant. 119d58a1cd00b969a7755c375f55cf80f4d49d3047bbsalomon@google.com * 120d58a1cd00b969a7755c375f55cf80f4d49d3047bbsalomon@google.com * Components of a 8888 pixel can be packed/unpacked from a 32bit word using 121d58a1cd00b969a7755c375f55cf80f4d49d3047bbsalomon@google.com * either byte offsets or shift values. Byte offsets are endian-invariant 122d58a1cd00b969a7755c375f55cf80f4d49d3047bbsalomon@google.com * while shifts are not. BGRA and RGBA configs are defined by byte 123d58a1cd00b969a7755c375f55cf80f4d49d3047bbsalomon@google.com * orderings. The native config is defined by shift values (SK_A32_SHIFT, 124d58a1cd00b969a7755c375f55cf80f4d49d3047bbsalomon@google.com * ..., SK_B32_SHIFT). 1256850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com */ 1266850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com enum Config8888 { 1276850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com /** 1286850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com * Skia's native order specified by: 1296850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com * SK_A32_SHIFT, SK_R32_SHIFT, SK_G32_SHIFT, and SK_B32_SHIFT 1306850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com * 1316850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com * kNative_Premul_Config8888 is equivalent to SkPMColor 1326850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com * kNative_Unpremul_Config8888 has the same component order as SkPMColor 1336850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com * but is not premultiplied. 1346850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com */ 1356850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com kNative_Premul_Config8888, 1366850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com kNative_Unpremul_Config8888, 1376850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com /** 1386850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com * low byte to high byte: B, G, R, A. 1396850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com */ 1406850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com kBGRA_Premul_Config8888, 1416850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com kBGRA_Unpremul_Config8888, 1426850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com /** 1436850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com * low byte to high byte: R, G, B, A. 1446850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com */ 1456850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com kRGBA_Premul_Config8888, 1461f90287df3129cb267422e482c52ebeca6a8990ftomhudson@google.com kRGBA_Unpremul_Config8888 1476850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com }; 1486850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com 1496850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com /** 150daba14b7d4fc96b915c45d82713b22729c0d0f37bsalomon@google.com * On success (returns true), copy the canvas pixels into the bitmap. 151daba14b7d4fc96b915c45d82713b22729c0d0f37bsalomon@google.com * On failure, the bitmap parameter is left unchanged and false is 152daba14b7d4fc96b915c45d82713b22729c0d0f37bsalomon@google.com * returned. 153daba14b7d4fc96b915c45d82713b22729c0d0f37bsalomon@google.com * 1546850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com * The canvas' pixels are converted to the bitmap's config. The only 1556850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com * supported config is kARGB_8888_Config, though this is likely to be 1566850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com * relaxed in the future. The meaning of config kARGB_8888_Config is 1576850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com * modified by the enum param config8888. The default value interprets 1586850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com * kARGB_8888_Config as SkPMColor 159daba14b7d4fc96b915c45d82713b22729c0d0f37bsalomon@google.com * 160daba14b7d4fc96b915c45d82713b22729c0d0f37bsalomon@google.com * If the bitmap has pixels already allocated, the canvas pixels will be 16174b461961607fa57a150a9282c410ef0cab38764vandebo@chromium.org * written there. If not, bitmap->allocPixels() will be called 162daba14b7d4fc96b915c45d82713b22729c0d0f37bsalomon@google.com * automatically. If the bitmap is backed by a texture readPixels will 163daba14b7d4fc96b915c45d82713b22729c0d0f37bsalomon@google.com * fail. 164daba14b7d4fc96b915c45d82713b22729c0d0f37bsalomon@google.com * 165daba14b7d4fc96b915c45d82713b22729c0d0f37bsalomon@google.com * The actual pixels written is the intersection of the canvas' bounds, and 166daba14b7d4fc96b915c45d82713b22729c0d0f37bsalomon@google.com * the rectangle formed by the bitmap's width,height and the specified x,y. 167daba14b7d4fc96b915c45d82713b22729c0d0f37bsalomon@google.com * If bitmap pixels extend outside of that intersection, they will not be 168daba14b7d4fc96b915c45d82713b22729c0d0f37bsalomon@google.com * modified. 169daba14b7d4fc96b915c45d82713b22729c0d0f37bsalomon@google.com * 1706850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com * Other failure conditions: 1716850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com * * If the canvas is backed by a non-raster device (e.g. PDF) then 1726850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com * readPixels will fail. 1736850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com * * If bitmap is texture-backed then readPixels will fail. (This may be 1746850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com * relaxed in the future.) 1756850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com * 1766850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com * Example that reads the entire canvas into a bitmap using the native 1776850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com * SkPMColor: 1786850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com * SkISize size = canvas->getDeviceSize(); 1796850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com * bitmap->setConfig(SkBitmap::kARGB_8888_Config, size.fWidth, 1806850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com * size.fHeight); 1816850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com * if (canvas->readPixels(bitmap, 0, 0)) { 1826850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com * // use the pixels 1836850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com * } 184c69809745e6496564639e42ef998ad39adf7dfb8bsalomon@google.com */ 1856850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com bool readPixels(SkBitmap* bitmap, 1866850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com int x, int y, 1876850eab42ba4c2a7033a99824b02a2846ce0ef2absalomon@google.com Config8888 config8888 = kNative_Premul_Config8888); 188c69809745e6496564639e42ef998ad39adf7dfb8bsalomon@google.com 1894b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com /** 190c69809745e6496564639e42ef998ad39adf7dfb8bsalomon@google.com * DEPRECATED: This will be removed as soon as webkit is no longer relying 191c69809745e6496564639e42ef998ad39adf7dfb8bsalomon@google.com * on it. The bitmap is resized to the intersection of srcRect and the 192c69809745e6496564639e42ef998ad39adf7dfb8bsalomon@google.com * canvas bounds. New pixels are always allocated on success. Bitmap is 193c69809745e6496564639e42ef998ad39adf7dfb8bsalomon@google.com * unmodified on failure. 19451df9e3fe3c1aec370854b2718df16fc02faa1b2reed@google.com */ 19551df9e3fe3c1aec370854b2718df16fc02faa1b2reed@google.com bool readPixels(const SkIRect& srcRect, SkBitmap* bitmap); 19651df9e3fe3c1aec370854b2718df16fc02faa1b2reed@google.com 19751df9e3fe3c1aec370854b2718df16fc02faa1b2reed@google.com /** 19851df9e3fe3c1aec370854b2718df16fc02faa1b2reed@google.com * Similar to draw sprite, this method will copy the pixels in bitmap onto 199d58a1cd00b969a7755c375f55cf80f4d49d3047bbsalomon@google.com * the canvas, with the top/left corner specified by (x, y). The canvas' 200d58a1cd00b969a7755c375f55cf80f4d49d3047bbsalomon@google.com * pixel values are completely replaced: there is no blending. 201d58a1cd00b969a7755c375f55cf80f4d49d3047bbsalomon@google.com * 202d58a1cd00b969a7755c375f55cf80f4d49d3047bbsalomon@google.com * Currently if bitmap is backed by a texture this is a no-op. This may be 203d58a1cd00b969a7755c375f55cf80f4d49d3047bbsalomon@google.com * relaxed in the future. 204d58a1cd00b969a7755c375f55cf80f4d49d3047bbsalomon@google.com * 205d58a1cd00b969a7755c375f55cf80f4d49d3047bbsalomon@google.com * If the bitmap has config kARGB_8888_Config then the config8888 param 206d58a1cd00b969a7755c375f55cf80f4d49d3047bbsalomon@google.com * will determines how the pixel valuess are intepreted. If the bitmap is 207d58a1cd00b969a7755c375f55cf80f4d49d3047bbsalomon@google.com * not kARGB_8888_Config then this parameter is ignored. 2084f1151ab27485aff393d16559086c4c461f137a4epoger@google.com * 2094f1151ab27485aff393d16559086c4c461f137a4epoger@google.com * Note: If you are recording drawing commands on this canvas to 2104f1151ab27485aff393d16559086c4c461f137a4epoger@google.com * SkPicture, writePixels() is ignored! 21151df9e3fe3c1aec370854b2718df16fc02faa1b2reed@google.com */ 212d58a1cd00b969a7755c375f55cf80f4d49d3047bbsalomon@google.com void writePixels(const SkBitmap& bitmap, 213d58a1cd00b969a7755c375f55cf80f4d49d3047bbsalomon@google.com int x, int y, 214d58a1cd00b969a7755c375f55cf80f4d49d3047bbsalomon@google.com Config8888 config8888 = kNative_Premul_Config8888); 2154b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com 2168a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /////////////////////////////////////////////////////////////////////////// 2178d84fac294682647694b0d2d8a87ac2bd19b6aabvandebo@chromium.org 2188a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com enum SaveFlags { 2198a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** save the matrix state, restoring it on restore() */ 2208a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kMatrix_SaveFlag = 0x01, 2218a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** save the clip state, restoring it on restore() */ 2228a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kClip_SaveFlag = 0x02, 2238a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** the layer needs to support per-pixel alpha */ 2248a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kHasAlphaLayer_SaveFlag = 0x04, 2258a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** the layer needs to support 8-bits per color component */ 2268a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kFullColorLayer_SaveFlag = 0x08, 2278a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** the layer should clip against the bounds argument */ 2288a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kClipToLayer_SaveFlag = 0x10, 2298a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 2308a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com // helper masks for common choices 2318a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kMatrixClip_SaveFlag = 0x03, 2328a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kARGB_NoClipLayer_SaveFlag = 0x0F, 2338a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kARGB_ClipLayer_SaveFlag = 0x1F 2348a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com }; 2358a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 236dc3381fc8194a6192af39539c6ac9787b20209d3reed@android.com /** This call saves the current matrix, clip, and drawFilter, and pushes a 2378a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com copy onto a private stack. Subsequent calls to translate, scale, 238dc3381fc8194a6192af39539c6ac9787b20209d3reed@android.com rotate, skew, concat or clipRect, clipPath, and setDrawFilter all 239dc3381fc8194a6192af39539c6ac9787b20209d3reed@android.com operate on this copy. 240dc3381fc8194a6192af39539c6ac9787b20209d3reed@android.com When the balancing call to restore() is made, the previous matrix, clip, 241dc3381fc8194a6192af39539c6ac9787b20209d3reed@android.com and drawFilter are restored. 242d4236574cfe4ec333d20e7a30f37e084168bb050djsollen@google.com @param flags The flags govern what portion of the Matrix/Clip/drawFilter 243d4236574cfe4ec333d20e7a30f37e084168bb050djsollen@google.com state the save (and matching restore) effect. For example, 244d4236574cfe4ec333d20e7a30f37e084168bb050djsollen@google.com if only kMatrix is specified, then only the matrix state 245d4236574cfe4ec333d20e7a30f37e084168bb050djsollen@google.com will be pushed and popped. Likewise for the clip if kClip 246d4236574cfe4ec333d20e7a30f37e084168bb050djsollen@google.com is specified. However, the drawFilter is always affected 247d4236574cfe4ec333d20e7a30f37e084168bb050djsollen@google.com by calls to save/restore. 2488a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @return The value to pass to restoreToCount() to balance this save() 2498a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 2508a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com virtual int save(SaveFlags flags = kMatrixClip_SaveFlag); 2518a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 2528a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** This behaves the same as save(), but in addition it allocates an 2538a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com offscreen bitmap. All drawing calls are directed there, and only when 2548a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com the balancing call to restore() is made is that offscreen transfered to 255dc3381fc8194a6192af39539c6ac9787b20209d3reed@android.com the canvas (or the previous layer). 256ad164b2025cba65131ca68221a6ea7640d7b1de8reed@android.com @param bounds (may be null) This rect, if non-null, is used as a hint to 257ad164b2025cba65131ca68221a6ea7640d7b1de8reed@android.com limit the size of the offscreen, and thus drawing may be 258ad164b2025cba65131ca68221a6ea7640d7b1de8reed@android.com clipped to it, though that clipping is not guaranteed to 259ad164b2025cba65131ca68221a6ea7640d7b1de8reed@android.com happen. If exact clipping is desired, use clipRect(). 2608a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint (may be null) This is copied, and is applied to the 2618a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com offscreen when restore() is called 2628a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param flags LayerFlags 2638a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @return The value to pass to restoreToCount() to balance this save() 2648a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 2658a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com virtual int saveLayer(const SkRect* bounds, const SkPaint* paint, 2668a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SaveFlags flags = kARGB_ClipLayer_SaveFlag); 2678a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 2688a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** This behaves the same as save(), but in addition it allocates an 2698a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com offscreen bitmap. All drawing calls are directed there, and only when 2708a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com the balancing call to restore() is made is that offscreen transfered to 271dc3381fc8194a6192af39539c6ac9787b20209d3reed@android.com the canvas (or the previous layer). 27240408614655c4057d93842c9b0f09aa6dfff9e02reed@android.com @param bounds (may be null) This rect, if non-null, is used as a hint to 27340408614655c4057d93842c9b0f09aa6dfff9e02reed@android.com limit the size of the offscreen, and thus drawing may be 27440408614655c4057d93842c9b0f09aa6dfff9e02reed@android.com clipped to it, though that clipping is not guaranteed to 27540408614655c4057d93842c9b0f09aa6dfff9e02reed@android.com happen. If exact clipping is desired, use clipRect(). 2768a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param alpha This is applied to the offscreen when restore() is called. 2778a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param flags LayerFlags 2788a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @return The value to pass to restoreToCount() to balance this save() 2798a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 2808a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com int saveLayerAlpha(const SkRect* bounds, U8CPU alpha, 2818a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SaveFlags flags = kARGB_ClipLayer_SaveFlag); 2828a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 2838a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** This call balances a previous call to save(), and is used to remove all 284dc3381fc8194a6192af39539c6ac9787b20209d3reed@android.com modifications to the matrix/clip/drawFilter state since the last save 285dc3381fc8194a6192af39539c6ac9787b20209d3reed@android.com call. 286dc3381fc8194a6192af39539c6ac9787b20209d3reed@android.com It is an error to call restore() more times than save() was called. 2878a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 2888a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com virtual void restore(); 2898a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 2908a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Returns the number of matrix/clip states on the SkCanvas' private stack. 2918a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com This will equal # save() calls - # restore() calls. 2928a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 293a907ac3e3e3458fbb5d673c3feafb31fd7647b38junov@chromium.org int getSaveCount() const; 2948a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 2958a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Efficient way to pop any calls to save() that happened after the save 2968a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com count reached saveCount. It is an error for saveCount to be less than 2978a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com getSaveCount() 2988a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param saveCount The number of save() levels to restore from 2998a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 3008a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void restoreToCount(int saveCount); 3018a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 3027c2029367cea5479fa3b74fb0ca2b0297b42b709reed@google.com /** Returns true if drawing is currently going to a layer (from saveLayer) 3037c2029367cea5479fa3b74fb0ca2b0297b42b709reed@google.com * rather than to the root device. 3047c2029367cea5479fa3b74fb0ca2b0297b42b709reed@google.com */ 3058f9ecbd3466d4330886b4c23b06e75b468c795adjunov@chromium.org virtual bool isDrawingToLayer() const; 3067c2029367cea5479fa3b74fb0ca2b0297b42b709reed@google.com 3078a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Preconcat the current matrix with the specified translation 3088a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param dx The distance to translate in X 3098a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param dy The distance to translate in Y 3108a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com returns true if the operation succeeded (e.g. did not overflow) 3118a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 3128a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com virtual bool translate(SkScalar dx, SkScalar dy); 3138a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 3148a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Preconcat the current matrix with the specified scale. 3158a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param sx The amount to scale in X 3168a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param sy The amount to scale in Y 3178a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com returns true if the operation succeeded (e.g. did not overflow) 3188a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 3198a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com virtual bool scale(SkScalar sx, SkScalar sy); 3208a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 3218a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Preconcat the current matrix with the specified rotation. 3228a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param degrees The amount to rotate, in degrees 3238a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com returns true if the operation succeeded (e.g. did not overflow) 3248a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 3258a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com virtual bool rotate(SkScalar degrees); 3268a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 3278a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Preconcat the current matrix with the specified skew. 3288a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param sx The amount to skew in X 3298a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param sy The amount to skew in Y 3308a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com returns true if the operation succeeded (e.g. did not overflow) 3318a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 3328a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com virtual bool skew(SkScalar sx, SkScalar sy); 3338a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 3348a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Preconcat the current matrix with the specified matrix. 3358a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param matrix The matrix to preconcatenate with the current matrix 3368a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @return true if the operation succeeded (e.g. did not overflow) 3378a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 3388a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com virtual bool concat(const SkMatrix& matrix); 3394b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com 3408a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Replace the current matrix with a copy of the specified matrix. 3418a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param matrix The matrix that will be copied into the current matrix. 3428a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 3438a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com virtual void setMatrix(const SkMatrix& matrix); 3444b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com 3458a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Helper for setMatrix(identity). Sets the current matrix to identity. 3468a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 3478a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void resetMatrix(); 3488a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 3494ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com /** 3504ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * Modify the current clip with the specified rectangle. 3514ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * @param rect The rect to combine with the current clip 3524ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * @param op The region op to apply to the current clip 3534ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * @param doAntiAlias true if the clip should be antialiased 3544ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * @return true if the canvas' clip is non-empty 3554ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com */ 3568a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com virtual bool clipRect(const SkRect& rect, 357071eef918d70b6ca8334bc1241d1ea6923e828d5reed@google.com SkRegion::Op op = SkRegion::kIntersect_Op, 358071eef918d70b6ca8334bc1241d1ea6923e828d5reed@google.com bool doAntiAlias = false); 3598a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 3604ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com /** 3614ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * Modify the current clip with the specified SkRRect. 3624ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * @param rrect The rrect to combine with the current clip 3634ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * @param op The region op to apply to the current clip 3644ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * @param doAntiAlias true if the clip should be antialiased 3654ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * @return true if the canvas' clip is non-empty 3664ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com */ 3674ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com virtual bool clipRRect(const SkRRect& rrect, 3684ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com SkRegion::Op op = SkRegion::kIntersect_Op, 3694ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com bool doAntiAlias = false); 3704ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com 3714ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com /** 3724ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * Modify the current clip with the specified path. 3734ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * @param path The path to combine with the current clip 3744ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * @param op The region op to apply to the current clip 3754ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * @param doAntiAlias true if the clip should be antialiased 3764ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * @return true if the canvas' new clip is non-empty 3774ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com */ 3788a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com virtual bool clipPath(const SkPath& path, 379071eef918d70b6ca8334bc1241d1ea6923e828d5reed@google.com SkRegion::Op op = SkRegion::kIntersect_Op, 380071eef918d70b6ca8334bc1241d1ea6923e828d5reed@google.com bool doAntiAlias = false); 3818a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 3828f0a7b8e7334187a5d7d5ab7fde5a3c3009555f5caryclark@google.com /** EXPERIMENTAL -- only used for testing 3838f0a7b8e7334187a5d7d5ab7fde5a3c3009555f5caryclark@google.com Set to false to force clips to be hard, even if doAntiAlias=true is 3848f0a7b8e7334187a5d7d5ab7fde5a3c3009555f5caryclark@google.com passed to clipRect or clipPath. 3858f0a7b8e7334187a5d7d5ab7fde5a3c3009555f5caryclark@google.com */ 3868f0a7b8e7334187a5d7d5ab7fde5a3c3009555f5caryclark@google.com void setAllowSoftClip(bool allow) { 3878f0a7b8e7334187a5d7d5ab7fde5a3c3009555f5caryclark@google.com fAllowSoftClip = allow; 3888f0a7b8e7334187a5d7d5ab7fde5a3c3009555f5caryclark@google.com } 3898f0a7b8e7334187a5d7d5ab7fde5a3c3009555f5caryclark@google.com 39045a75fb4d0ca5daa0ac5e634238970306e3b5838caryclark@google.com /** EXPERIMENTAL -- only used for testing 39145a75fb4d0ca5daa0ac5e634238970306e3b5838caryclark@google.com Set to simplify clip stack using path ops. 39245a75fb4d0ca5daa0ac5e634238970306e3b5838caryclark@google.com */ 39345a75fb4d0ca5daa0ac5e634238970306e3b5838caryclark@google.com void setAllowSimplifyClip(bool allow) { 39445a75fb4d0ca5daa0ac5e634238970306e3b5838caryclark@google.com fAllowSimplifyClip = allow; 39545a75fb4d0ca5daa0ac5e634238970306e3b5838caryclark@google.com } 39645a75fb4d0ca5daa0ac5e634238970306e3b5838caryclark@google.com 3978a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Modify the current clip with the specified region. Note that unlike 3988a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com clipRect() and clipPath() which transform their arguments by the current 3998a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com matrix, clipRegion() assumes its argument is already in device 4008a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com coordinates, and so no transformation is performed. 4018a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param deviceRgn The region to apply to the current clip 4028a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param op The region op to apply to the current clip 4038a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @return true if the canvas' new clip is non-empty 4048a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 4058a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com virtual bool clipRegion(const SkRegion& deviceRgn, 4068a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkRegion::Op op = SkRegion::kIntersect_Op); 4078a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 4088a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Helper for clipRegion(rgn, kReplace_Op). Sets the current clip to the 4098a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com specified region. This does not intersect or in any other way account 4108a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com for the existing clip region. 4118a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param deviceRgn The region to copy into the current clip. 4128a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @return true if the new clip region is non-empty 4138a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 4148a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com bool setClipRegion(const SkRegion& deviceRgn) { 4158a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com return this->clipRegion(deviceRgn, SkRegion::kReplace_Op); 4168a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 4178a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 4188a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Return true if the specified rectangle, after being transformed by the 4198a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com current matrix, would lie completely outside of the current clip. Call 4208a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this to check if an area you intend to draw into is clipped out (and 4218a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com therefore you can skip making the draw calls). 4228a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param rect the rect to compare with the current clip 4238a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @return true if the rect (transformed by the canvas' matrix) does not 4248a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com intersect with the canvas' clip 4258a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 4263b3e895df6f8ee0f33010367c215944cd16a8334reed@google.com bool quickReject(const SkRect& rect) const; 4278a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 4288a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Return true if the specified path, after being transformed by the 4298a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com current matrix, would lie completely outside of the current clip. Call 4308a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this to check if an area you intend to draw into is clipped out (and 4318a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com therefore you can skip making the draw calls). Note, for speed it may 4328a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com return false even if the path itself might not intersect the clip 4338a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com (i.e. the bounds of the path intersects, but the path does not). 4348a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param path The path to compare with the current clip 4358a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @return true if the path (transformed by the canvas' matrix) does not 4368a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com intersect with the canvas' clip 4378a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 4383b3e895df6f8ee0f33010367c215944cd16a8334reed@google.com bool quickReject(const SkPath& path) const; 4398a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 4408a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Return true if the horizontal band specified by top and bottom is 4418a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com completely clipped out. This is a conservative calculation, meaning 4428a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com that it is possible that if the method returns false, the band may still 4438a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com in fact be clipped out, but the converse is not true. If this method 4448a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com returns true, then the band is guaranteed to be clipped out. 4458a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param top The top of the horizontal band to compare with the clip 4468a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param bottom The bottom of the horizontal and to compare with the clip 4478a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @return true if the horizontal band is completely clipped out (i.e. does 4488a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com not intersect the current clip) 4498a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 4503b3e895df6f8ee0f33010367c215944cd16a8334reed@google.com bool quickRejectY(SkScalar top, SkScalar bottom) const { 45192d2a299d2738e4369508ea1296981a2f1f8aadbdjsollen@google.com SkASSERT(SkScalarToCompareType(top) <= SkScalarToCompareType(bottom)); 4523b3e895df6f8ee0f33010367c215944cd16a8334reed@google.com const SkRectCompareType& clipR = this->getLocalClipBoundsCompareType(); 45392d2a299d2738e4369508ea1296981a2f1f8aadbdjsollen@google.com // In the case where the clip is empty and we are provided with a 45492d2a299d2738e4369508ea1296981a2f1f8aadbdjsollen@google.com // negative top and positive bottom parameter then this test will return 45592d2a299d2738e4369508ea1296981a2f1f8aadbdjsollen@google.com // false even though it will be clipped. We have chosen to exclude that 45692d2a299d2738e4369508ea1296981a2f1f8aadbdjsollen@google.com // check as it is rare and would result double the comparisons. 45792d2a299d2738e4369508ea1296981a2f1f8aadbdjsollen@google.com return SkScalarToCompareType(top) >= clipR.fBottom 45892d2a299d2738e4369508ea1296981a2f1f8aadbdjsollen@google.com || SkScalarToCompareType(bottom) <= clipR.fTop; 45992d2a299d2738e4369508ea1296981a2f1f8aadbdjsollen@google.com } 4608a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 4618a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Return the bounds of the current clip (in local coordinates) in the 4628a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com bounds parameter, and return true if it is non-empty. This can be useful 4638a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com in a way similar to quickReject, in that it tells you that drawing 4648a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com outside of these bounds will be clipped out. 4658a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 4663b3e895df6f8ee0f33010367c215944cd16a8334reed@google.com bool getClipBounds(SkRect* bounds) const; 4678a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 468bcb671c82a7341253864cda3a5c46d396402d7fbtomhudson@google.com /** Return the bounds of the current clip, in device coordinates; returns 469bcb671c82a7341253864cda3a5c46d396402d7fbtomhudson@google.com true if non-empty. Maybe faster than getting the clip explicitly and 470bcb671c82a7341253864cda3a5c46d396402d7fbtomhudson@google.com then taking its bounds. 471bcb671c82a7341253864cda3a5c46d396402d7fbtomhudson@google.com */ 472bcb671c82a7341253864cda3a5c46d396402d7fbtomhudson@google.com bool getClipDeviceBounds(SkIRect* bounds) const; 47374b461961607fa57a150a9282c410ef0cab38764vandebo@chromium.org 474bcb671c82a7341253864cda3a5c46d396402d7fbtomhudson@google.com 4758a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Fill the entire canvas' bitmap (restricted to the current clip) with the 476845fdaca174f4675e9acc164b510e3a5ffa9053creed@android.com specified ARGB color, using the specified mode. 4778a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param a the alpha component (0..255) of the color to fill the canvas 4788a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param r the red component (0..255) of the color to fill the canvas 4798a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param g the green component (0..255) of the color to fill the canvas 4808a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param b the blue component (0..255) of the color to fill the canvas 4818a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param mode the mode to apply the color in (defaults to SrcOver) 4828a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 4838a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void drawARGB(U8CPU a, U8CPU r, U8CPU g, U8CPU b, 484845fdaca174f4675e9acc164b510e3a5ffa9053creed@android.com SkXfermode::Mode mode = SkXfermode::kSrcOver_Mode); 4858a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 4868a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Fill the entire canvas' bitmap (restricted to the current clip) with the 487845fdaca174f4675e9acc164b510e3a5ffa9053creed@android.com specified color and mode. 4888a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param color the color to draw with 4898a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param mode the mode to apply the color in (defaults to SrcOver) 4908a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 4918a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void drawColor(SkColor color, 492845fdaca174f4675e9acc164b510e3a5ffa9053creed@android.com SkXfermode::Mode mode = SkXfermode::kSrcOver_Mode); 4938a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 4942a98181f048c11f21f52fbd99f803f5fd6118261reed@google.com /** 4952a98181f048c11f21f52fbd99f803f5fd6118261reed@google.com * This erases the entire drawing surface to the specified color, 4962a98181f048c11f21f52fbd99f803f5fd6118261reed@google.com * irrespective of the clip. It does not blend with the previous pixels, 4972a98181f048c11f21f52fbd99f803f5fd6118261reed@google.com * but always overwrites them. 4982a98181f048c11f21f52fbd99f803f5fd6118261reed@google.com * 4992a98181f048c11f21f52fbd99f803f5fd6118261reed@google.com * It is roughly equivalent to the following: 5002a98181f048c11f21f52fbd99f803f5fd6118261reed@google.com * canvas.save(); 5012a98181f048c11f21f52fbd99f803f5fd6118261reed@google.com * canvas.clipRect(hugeRect, kReplace_Op); 5022a98181f048c11f21f52fbd99f803f5fd6118261reed@google.com * paint.setColor(color); 5032a98181f048c11f21f52fbd99f803f5fd6118261reed@google.com * paint.setXfermodeMode(kSrc_Mode); 5042a98181f048c11f21f52fbd99f803f5fd6118261reed@google.com * canvas.drawPaint(paint); 5052a98181f048c11f21f52fbd99f803f5fd6118261reed@google.com * canvas.restore(); 5062a98181f048c11f21f52fbd99f803f5fd6118261reed@google.com * though it is almost always much more efficient. 5072a98181f048c11f21f52fbd99f803f5fd6118261reed@google.com */ 5082a98181f048c11f21f52fbd99f803f5fd6118261reed@google.com virtual void clear(SkColor); 5092a98181f048c11f21f52fbd99f803f5fd6118261reed@google.com 5102a98181f048c11f21f52fbd99f803f5fd6118261reed@google.com /** 5112a98181f048c11f21f52fbd99f803f5fd6118261reed@google.com * Fill the entire canvas' bitmap (restricted to the current clip) with the 5122a98181f048c11f21f52fbd99f803f5fd6118261reed@google.com * specified paint. 5132a98181f048c11f21f52fbd99f803f5fd6118261reed@google.com * @param paint The paint used to fill the canvas 5142a98181f048c11f21f52fbd99f803f5fd6118261reed@google.com */ 5158a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com virtual void drawPaint(const SkPaint& paint); 5168a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 5178a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com enum PointMode { 5188a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** drawPoints draws each point separately */ 5198a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kPoints_PointMode, 5208a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** drawPoints draws each pair of points as a line segment */ 5218a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kLines_PointMode, 5228a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** drawPoints draws the array of points as a polygon */ 5238a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kPolygon_PointMode 5248a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com }; 5258a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 5268a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw a series of points, interpreted based on the PointMode mode. For 5278a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com all modes, the count parameter is interpreted as the total number of 5288a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com points. For kLine mode, count/2 line segments are drawn. 5298a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com For kPoint mode, each point is drawn centered at its coordinate, and its 5308a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com size is specified by the paint's stroke-width. It draws as a square, 5318a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com unless the paint's cap-type is round, in which the points are drawn as 5328a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com circles. 5338a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com For kLine mode, each pair of points is drawn as a line segment, 5348a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com respecting the paint's settings for cap/join/width. 5358a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com For kPolygon mode, the entire array is drawn as a series of connected 5368a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com line segments. 5378a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com Note that, while similar, kLine and kPolygon modes draw slightly 5388a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com differently than the equivalent path built with a series of moveto, 5398a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com lineto calls, in that the path will draw all of its contours at once, 5408a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com with no interactions if contours intersect each other (think XOR 5418a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com xfermode). drawPoints always draws each element one at a time. 5428a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param mode PointMode specifying how to draw the array of points. 5438a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param count The number of points in the array 5448a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param pts Array of points to draw 5458a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used to draw the points 5468a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 5478a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com virtual void drawPoints(PointMode mode, size_t count, const SkPoint pts[], 5488a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com const SkPaint& paint); 5498a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 5508a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Helper method for drawing a single point. See drawPoints() for a more 5518a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com details. 5528a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 5538a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void drawPoint(SkScalar x, SkScalar y, const SkPaint& paint); 5544b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com 5558a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draws a single pixel in the specified color. 5568a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param x The X coordinate of which pixel to draw 5578a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param y The Y coordiante of which pixel to draw 5588a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param color The color to draw 5598a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 5608a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void drawPoint(SkScalar x, SkScalar y, SkColor color); 5618a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 5628a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw a line segment with the specified start and stop x,y coordinates, 5638a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com using the specified paint. NOTE: since a line is always "framed", the 5648a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com paint's Style is ignored. 5658a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param x0 The x-coordinate of the start point of the line 5668a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param y0 The y-coordinate of the start point of the line 5678a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param x1 The x-coordinate of the end point of the line 5688a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param y1 The y-coordinate of the end point of the line 5698a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used to draw the line 5708a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 5718a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void drawLine(SkScalar x0, SkScalar y0, SkScalar x1, SkScalar y1, 5728a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com const SkPaint& paint); 5738a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 5748a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the specified rectangle using the specified paint. The rectangle 5758a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com will be filled or stroked based on the Style in the paint. 5768a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param rect The rect to be drawn 5778a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used to draw the rect 5788a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 5797ce564cccb246ec56427085872b2e1458fe74bd1bsalomon@google.com virtual void drawRect(const SkRect& rect, const SkPaint& paint); 5808a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 5818a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the specified rectangle using the specified paint. The rectangle 5828a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com will be filled or framed based on the Style in the paint. 5838a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param rect The rect to be drawn 5848a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used to draw the rect 5858a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 5867ce564cccb246ec56427085872b2e1458fe74bd1bsalomon@google.com void drawIRect(const SkIRect& rect, const SkPaint& paint) 5877ce564cccb246ec56427085872b2e1458fe74bd1bsalomon@google.com { 5888a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkRect r; 5898a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com r.set(rect); // promotes the ints to scalars 5908a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this->drawRect(r, paint); 5918a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 5924b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com 5938a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the specified rectangle using the specified paint. The rectangle 5948a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com will be filled or framed based on the Style in the paint. 5958a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param left The left side of the rectangle to be drawn 5968a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param top The top side of the rectangle to be drawn 5978a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param right The right side of the rectangle to be drawn 5988a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param bottom The bottom side of the rectangle to be drawn 5998a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used to draw the rect 6008a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 6018a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void drawRectCoords(SkScalar left, SkScalar top, SkScalar right, 6028a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkScalar bottom, const SkPaint& paint); 6038a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 6048a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the specified oval using the specified paint. The oval will be 6058a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com filled or framed based on the Style in the paint. 6068a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param oval The rectangle bounds of the oval to be drawn 6078a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used to draw the oval 6088a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 6094ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com virtual void drawOval(const SkRect& oval, const SkPaint&); 6104ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com 6114ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com /** 6124ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * Draw the specified RRect using the specified paint The rrect will be filled or stroked 6134ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * based on the Style in the paint. 6144ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * 6154ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * @param rrect The round-rect to draw 6164ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com * @param paint The paint used to draw the round-rect 6174ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com */ 6184ed0fb768409bf97b79899c3990d8c15f5e9d784reed@google.com virtual void drawRRect(const SkRRect& rrect, const SkPaint& paint); 6198a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 6208a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the specified circle using the specified paint. If radius is <= 0, 6218a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com then nothing will be drawn. The circle will be filled 6228a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com or framed based on the Style in the paint. 6238a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param cx The x-coordinate of the center of the cirle to be drawn 6248a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param cy The y-coordinate of the center of the cirle to be drawn 6258a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param radius The radius of the cirle to be drawn 6268a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used to draw the circle 6278a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 6288a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void drawCircle(SkScalar cx, SkScalar cy, SkScalar radius, 6298a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com const SkPaint& paint); 6308a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 6318a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the specified arc, which will be scaled to fit inside the 6328a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com specified oval. If the sweep angle is >= 360, then the oval is drawn 6338a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com completely. Note that this differs slightly from SkPath::arcTo, which 6348a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com treats the sweep angle mod 360. 6358a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param oval The bounds of oval used to define the shape of the arc 6368a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param startAngle Starting angle (in degrees) where the arc begins 6378a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param sweepAngle Sweep angle (in degrees) measured clockwise 6388a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param useCenter true means include the center of the oval. For filling 6398a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this will draw a wedge. False means just use the arc. 6408a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used to draw the arc 6418a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 6428a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void drawArc(const SkRect& oval, SkScalar startAngle, SkScalar sweepAngle, 6438a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com bool useCenter, const SkPaint& paint); 6448a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 6458a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the specified round-rect using the specified paint. The round-rect 6468a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com will be filled or framed based on the Style in the paint. 6478a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param rect The rectangular bounds of the roundRect to be drawn 6488a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param rx The x-radius of the oval used to round the corners 6498a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param ry The y-radius of the oval used to round the corners 6508a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used to draw the roundRect 6518a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 6528a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void drawRoundRect(const SkRect& rect, SkScalar rx, SkScalar ry, 6538a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com const SkPaint& paint); 6548a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 6558a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the specified path using the specified paint. The path will be 6568a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com filled or framed based on the Style in the paint. 6578a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param path The path to be drawn 6588a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used to draw the path 6598a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 6607ce564cccb246ec56427085872b2e1458fe74bd1bsalomon@google.com virtual void drawPath(const SkPath& path, const SkPaint& paint); 6618a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 6628a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the specified bitmap, with its top/left corner at (x,y), using the 6638a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com specified paint, transformed by the current matrix. Note: if the paint 6648a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com contains a maskfilter that generates a mask which extends beyond the 6658a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com bitmap's original width/height, then the bitmap will be drawn as if it 6668a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com were in a Shader with CLAMP mode. Thus the color outside of the original 6678a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com width/height will be the edge color replicated. 6688a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param bitmap The bitmap to be drawn 6698a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param left The position of the left side of the bitmap being drawn 6708a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param top The position of the top side of the bitmap being drawn 6718a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used to draw the bitmap, or NULL 6728a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 6738a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com virtual void drawBitmap(const SkBitmap& bitmap, SkScalar left, SkScalar top, 6748a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com const SkPaint* paint = NULL); 6758a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 676eed779d866e1e239bfb9ebc6a225b7345a41adf9commit-bot@chromium.org enum DrawBitmapRectFlags { 67731acc11977815402e4ef2681350f8559285bec97robertphillips@google.com kNone_DrawBitmapRectFlag = 0x0, 6787475811143e190e172bf83d13c4bdba85704b604skia.committer@gmail.com /** 679eed779d866e1e239bfb9ebc6a225b7345a41adf9commit-bot@chromium.org * When filtering is enabled, allow the color samples outside of 6807475811143e190e172bf83d13c4bdba85704b604skia.committer@gmail.com * the src rect (but still in the src bitmap) to bleed into the 681eed779d866e1e239bfb9ebc6a225b7345a41adf9commit-bot@chromium.org * drawn portion 682eed779d866e1e239bfb9ebc6a225b7345a41adf9commit-bot@chromium.org */ 68331acc11977815402e4ef2681350f8559285bec97robertphillips@google.com kBleed_DrawBitmapRectFlag = 0x1, 684eed779d866e1e239bfb9ebc6a225b7345a41adf9commit-bot@chromium.org }; 685eed779d866e1e239bfb9ebc6a225b7345a41adf9commit-bot@chromium.org 6868a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the specified bitmap, with the specified matrix applied (before the 6878a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com canvas' matrix is applied). 6888a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param bitmap The bitmap to be drawn 6898a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param src Optional: specify the subset of the bitmap to be drawn 6908a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param dst The destination rectangle where the scaled/translated 6918a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com image will be drawn 6928a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used to draw the bitmap, or NULL 6938a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 6947112173c3c4cd1b1e7da8cdf971d71f01dd91299reed@google.com virtual void drawBitmapRectToRect(const SkBitmap& bitmap, const SkRect* src, 6957112173c3c4cd1b1e7da8cdf971d71f01dd91299reed@google.com const SkRect& dst, 696eed779d866e1e239bfb9ebc6a225b7345a41adf9commit-bot@chromium.org const SkPaint* paint = NULL, 69731acc11977815402e4ef2681350f8559285bec97robertphillips@google.com DrawBitmapRectFlags flags = kNone_DrawBitmapRectFlag); 6987112173c3c4cd1b1e7da8cdf971d71f01dd91299reed@google.com 6997112173c3c4cd1b1e7da8cdf971d71f01dd91299reed@google.com void drawBitmapRect(const SkBitmap& bitmap, const SkRect& dst, 700eed779d866e1e239bfb9ebc6a225b7345a41adf9commit-bot@chromium.org const SkPaint* paint = NULL) { 70131acc11977815402e4ef2681350f8559285bec97robertphillips@google.com this->drawBitmapRectToRect(bitmap, NULL, dst, paint, kNone_DrawBitmapRectFlag); 7027112173c3c4cd1b1e7da8cdf971d71f01dd91299reed@google.com } 7038a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 7047112173c3c4cd1b1e7da8cdf971d71f01dd91299reed@google.com void drawBitmapRect(const SkBitmap& bitmap, const SkIRect* isrc, 705eed779d866e1e239bfb9ebc6a225b7345a41adf9commit-bot@chromium.org const SkRect& dst, const SkPaint* paint = NULL, 70631acc11977815402e4ef2681350f8559285bec97robertphillips@google.com DrawBitmapRectFlags flags = kNone_DrawBitmapRectFlag) { 7077112173c3c4cd1b1e7da8cdf971d71f01dd91299reed@google.com SkRect realSrcStorage; 7087112173c3c4cd1b1e7da8cdf971d71f01dd91299reed@google.com SkRect* realSrcPtr = NULL; 7097112173c3c4cd1b1e7da8cdf971d71f01dd91299reed@google.com if (isrc) { 7107112173c3c4cd1b1e7da8cdf971d71f01dd91299reed@google.com realSrcStorage.set(*isrc); 7117112173c3c4cd1b1e7da8cdf971d71f01dd91299reed@google.com realSrcPtr = &realSrcStorage; 7127112173c3c4cd1b1e7da8cdf971d71f01dd91299reed@google.com } 713eed779d866e1e239bfb9ebc6a225b7345a41adf9commit-bot@chromium.org this->drawBitmapRectToRect(bitmap, realSrcPtr, dst, paint, flags); 7147112173c3c4cd1b1e7da8cdf971d71f01dd91299reed@google.com } 715c1ad0226087e10b1f300b5a45e3d6fdb23b8d1b8skia.committer@gmail.com 7168a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com virtual void drawBitmapMatrix(const SkBitmap& bitmap, const SkMatrix& m, 7178a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com const SkPaint* paint = NULL); 7184b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com 719f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com /** 720f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com * Draw the bitmap stretched differentially to fit into dst. 721f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com * center is a rect within the bitmap, and logically divides the bitmap 722f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com * into 9 sections (3x3). For example, if the middle pixel of a [5x5] 723f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com * bitmap is the "center", then the center-rect should be [2, 2, 3, 3]. 724f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com * 725f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com * If the dst is >= the bitmap size, then... 7269bf380ce7f848dfb5886dd52b82746521454b739robertphillips@google.com * - The 4 corners are not stretched at all. 7279bf380ce7f848dfb5886dd52b82746521454b739robertphillips@google.com * - The sides are stretched in only one axis. 7289bf380ce7f848dfb5886dd52b82746521454b739robertphillips@google.com * - The center is stretched in both axes. 729f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com * Else, for each axis where dst < bitmap, 730f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com * - The corners shrink proportionally 731f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com * - The sides (along the shrink axis) and center are not drawn 732f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com */ 733f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com virtual void drawBitmapNine(const SkBitmap& bitmap, const SkIRect& center, 734f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com const SkRect& dst, const SkPaint* paint = NULL); 735f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com 7368a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the specified bitmap, with its top/left corner at (x,y), 7378a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com NOT transformed by the current matrix. Note: if the paint 7388a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com contains a maskfilter that generates a mask which extends beyond the 7398a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com bitmap's original width/height, then the bitmap will be drawn as if it 7408a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com were in a Shader with CLAMP mode. Thus the color outside of the original 7418a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com width/height will be the edge color replicated. 7428a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param bitmap The bitmap to be drawn 7438a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param left The position of the left side of the bitmap being drawn 7448a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param top The position of the top side of the bitmap being drawn 7458a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used to draw the bitmap, or NULL 7468a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 7478a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com virtual void drawSprite(const SkBitmap& bitmap, int left, int top, 7488a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com const SkPaint* paint = NULL); 7498a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 7508a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the text, with origin at (x,y), using the specified paint. 7518a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com The origin is interpreted based on the Align setting in the paint. 7528a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param text The text to be drawn 7538a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param byteLength The number of bytes to read from the text parameter 7548a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param x The x-coordinate of the origin of the text being drawn 7558a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param y The y-coordinate of the origin of the text being drawn 7568a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used for the text (e.g. color, size, style) 7578a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 7588a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com virtual void drawText(const void* text, size_t byteLength, SkScalar x, 7598a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkScalar y, const SkPaint& paint); 7608a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 7618a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the text, with each character/glyph origin specified by the pos[] 7624b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com array. The origin is interpreted by the Align setting in the paint. 7638a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param text The text to be drawn 7648a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param byteLength The number of bytes to read from the text parameter 7658a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param pos Array of positions, used to position each character 7668a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used for the text (e.g. color, size, style) 7678a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 7688a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com virtual void drawPosText(const void* text, size_t byteLength, 7698a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com const SkPoint pos[], const SkPaint& paint); 7704b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com 7718a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the text, with each character/glyph origin specified by the x 7728a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com coordinate taken from the xpos[] array, and the y from the constY param. 7734b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com The origin is interpreted by the Align setting in the paint. 7748a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param text The text to be drawn 7758a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param byteLength The number of bytes to read from the text parameter 7768a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param xpos Array of x-positions, used to position each character 7778a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param constY The shared Y coordinate for all of the positions 7788a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used for the text (e.g. color, size, style) 7798a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 7808a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com virtual void drawPosTextH(const void* text, size_t byteLength, 7818a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com const SkScalar xpos[], SkScalar constY, 7828a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com const SkPaint& paint); 7834b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com 7848a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the text, with origin at (x,y), using the specified paint, along 7858a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com the specified path. The paint's Align setting determins where along the 7868a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com path to start the text. 7878a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param text The text to be drawn 7888a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param byteLength The number of bytes to read from the text parameter 7898a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param path The path the text should follow for its baseline 7908a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param hOffset The distance along the path to add to the text's 7918a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com starting position 7928a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param vOffset The distance above(-) or below(+) the path to 7938a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com position the text 7948a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used for the text 7958a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 7968a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void drawTextOnPathHV(const void* text, size_t byteLength, 7978a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com const SkPath& path, SkScalar hOffset, 7988a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkScalar vOffset, const SkPaint& paint); 7998a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 8008a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the text, with origin at (x,y), using the specified paint, along 8018a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com the specified path. The paint's Align setting determins where along the 8028a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com path to start the text. 8038a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param text The text to be drawn 8048a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param byteLength The number of bytes to read from the text parameter 8058a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param path The path the text should follow for its baseline 8068a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param matrix (may be null) Applied to the text before it is 8078a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com mapped onto the path 8088a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param paint The paint used for the text 8098a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 8108a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com virtual void drawTextOnPath(const void* text, size_t byteLength, 8118a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com const SkPath& path, const SkMatrix* matrix, 8128a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com const SkPaint& paint); 8138a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 81456c69773aea56c6c6bd47bc7e7970dd081205184djsollen@google.com#ifdef SK_BUILD_FOR_ANDROID 815cd9d69b9ce7eb301a9fd8d91b9f95fd99b07bae5djsollen@google.com /** Draw the text on path, with each character/glyph origin specified by the pos[] 816cd9d69b9ce7eb301a9fd8d91b9f95fd99b07bae5djsollen@google.com array. The origin is interpreted by the Align setting in the paint. 817cd9d69b9ce7eb301a9fd8d91b9f95fd99b07bae5djsollen@google.com @param text The text to be drawn 818cd9d69b9ce7eb301a9fd8d91b9f95fd99b07bae5djsollen@google.com @param byteLength The number of bytes to read from the text parameter 819cd9d69b9ce7eb301a9fd8d91b9f95fd99b07bae5djsollen@google.com @param pos Array of positions, used to position each character 820cd9d69b9ce7eb301a9fd8d91b9f95fd99b07bae5djsollen@google.com @param paint The paint used for the text (e.g. color, size, style) 821cd9d69b9ce7eb301a9fd8d91b9f95fd99b07bae5djsollen@google.com @param path The path to draw on 822cd9d69b9ce7eb301a9fd8d91b9f95fd99b07bae5djsollen@google.com @param matrix The canvas matrix 823cd9d69b9ce7eb301a9fd8d91b9f95fd99b07bae5djsollen@google.com */ 824cd9d69b9ce7eb301a9fd8d91b9f95fd99b07bae5djsollen@google.com void drawPosTextOnPath(const void* text, size_t byteLength, 825cd9d69b9ce7eb301a9fd8d91b9f95fd99b07bae5djsollen@google.com const SkPoint pos[], const SkPaint& paint, 826cd9d69b9ce7eb301a9fd8d91b9f95fd99b07bae5djsollen@google.com const SkPath& path, const SkMatrix* matrix); 827cd9d69b9ce7eb301a9fd8d91b9f95fd99b07bae5djsollen@google.com#endif 828cd9d69b9ce7eb301a9fd8d91b9f95fd99b07bae5djsollen@google.com 8298a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the picture into this canvas. This method effective brackets the 8308a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com playback of the picture's draw calls with save/restore, so the state 831a44de9617a0a51014bacc4151287995ededcdf62djsollen@google.com of this canvas will be unchanged after this call. 8328a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param picture The recorded drawing commands to playback into this 8338a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com canvas. 8348a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 8358a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com virtual void drawPicture(SkPicture& picture); 8364b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com 8378a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com enum VertexMode { 8388a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kTriangles_VertexMode, 8398a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kTriangleStrip_VertexMode, 8408a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com kTriangleFan_VertexMode 8418a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com }; 8424b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com 8438a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Draw the array of vertices, interpreted as triangles (based on mode). 8448a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param vmode How to interpret the array of vertices 8458a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param vertexCount The number of points in the vertices array (and 8468a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com corresponding texs and colors arrays if non-null) 8478a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param vertices Array of vertices for the mesh 8488a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param texs May be null. If not null, specifies the coordinate 849631a59b9393208ed3546e81ca843f2f7da06ca64robertphillips@google.com in _texture_ space (not uv space) for each vertex. 8508a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param colors May be null. If not null, specifies a color for each 8518a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com vertex, to be interpolated across the triangle. 8528a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param xmode Used if both texs and colors are present. In this 8538a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com case the colors are combined with the texture using mode, 8548a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com before being drawn using the paint. If mode is null, then 8558d3cd7a170c810e3816bf00220cbef51e7b16795reed@google.com kModulate_Mode is used. 8568a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param indices If not null, array of indices to reference into the 8578a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com vertex (texs, colors) array. 8588a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param indexCount number of entries in the indices array (if not null) 8594b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com @param paint Specifies the shader/texture if present. 8608a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 8618a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com virtual void drawVertices(VertexMode vmode, int vertexCount, 8628a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com const SkPoint vertices[], const SkPoint texs[], 8638a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com const SkColor colors[], SkXfermode* xmode, 8648a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com const uint16_t indices[], int indexCount, 8658a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com const SkPaint& paint); 8668a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 867cb60844b34766aad4151df5e87c144d4a57e9abereed@android.com /** Send a blob of data to the canvas. 868cb60844b34766aad4151df5e87c144d4a57e9abereed@android.com For canvases that draw, this call is effectively a no-op, as the data 869cb60844b34766aad4151df5e87c144d4a57e9abereed@android.com is not parsed, but just ignored. However, this call exists for 870cb60844b34766aad4151df5e87c144d4a57e9abereed@android.com subclasses like SkPicture's recording canvas, that can store the data 871cb60844b34766aad4151df5e87c144d4a57e9abereed@android.com and then play it back later (via another call to drawData). 872cb60844b34766aad4151df5e87c144d4a57e9abereed@android.com */ 8730a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com virtual void drawData(const void* data, size_t length) { 8740a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com // do nothing. Subclasses may do something with the data 8750a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com } 8760a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com 877a5d3e77420621c912383c3b22e542d9413d68278skia.committer@gmail.com /** Add comments. beginCommentGroup/endCommentGroup open/close a new group. 878a5d3e77420621c912383c3b22e542d9413d68278skia.committer@gmail.com Each comment added via addComment is notionally attached to its 8790a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com enclosing group. Top-level comments simply belong to no group. 8800a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com */ 8810a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com virtual void beginCommentGroup(const char* description) { 8820a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com // do nothing. Subclasses may do something 8830a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com } 8840a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com virtual void addComment(const char* kywd, const char* value) { 8850a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com // do nothing. Subclasses may do something 8860a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com } 8870a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com virtual void endCommentGroup() { 8880a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com // do nothing. Subclasses may do something 8890a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com } 8900a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com 891cb60844b34766aad4151df5e87c144d4a57e9abereed@android.com 8928a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com ////////////////////////////////////////////////////////////////////////// 8934b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com 8948a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Get the current bounder object. 8958a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com The bounder's reference count is unchaged. 8968a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @return the canva's bounder (or NULL). 8978a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 8988a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkBounder* getBounder() const { return fBounder; } 8998a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 9008a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Set a new bounder (or NULL). 9018a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com Pass NULL to clear any previous bounder. 9028a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com As a convenience, the parameter passed is also returned. 9038a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com If a previous bounder exists, its reference count is decremented. 9048a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com If bounder is not NULL, its reference count is incremented. 9058a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param bounder the new bounder (or NULL) to be installed in the canvas 9068a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @return the set bounder object 9078a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 9088a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com virtual SkBounder* setBounder(SkBounder* bounder); 9094b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com 9108a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Get the current filter object. The filter's reference count is not 911dc3381fc8194a6192af39539c6ac9787b20209d3reed@android.com affected. The filter is saved/restored, just like the matrix and clip. 9128a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @return the canvas' filter (or NULL). 9138a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 9148a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkDrawFilter* getDrawFilter() const; 9154b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com 9168a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Set the new filter (or NULL). Pass NULL to clear any existing filter. 9178a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com As a convenience, the parameter is returned. If an existing filter 9188a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com exists, its refcnt is decrement. If the new filter is not null, its 919dc3381fc8194a6192af39539c6ac9787b20209d3reed@android.com refcnt is incremented. The filter is saved/restored, just like the 920dc3381fc8194a6192af39539c6ac9787b20209d3reed@android.com matrix and clip. 9218a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @param filter the new filter (or NULL) 9228a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @return the new filter 9238a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 9248a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com virtual SkDrawFilter* setDrawFilter(SkDrawFilter* filter); 9258a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 9268a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com ////////////////////////////////////////////////////////////////////////// 9278a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 9288a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Return the current matrix on the canvas. 9298a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com This does not account for the translate in any of the devices. 9308a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com @return The current matrix on the canvas. 9318a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 932a907ac3e3e3458fbb5d673c3feafb31fd7647b38junov@chromium.org const SkMatrix& getTotalMatrix() const; 9338a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 934bcb671c82a7341253864cda3a5c46d396402d7fbtomhudson@google.com enum ClipType { 935bcb671c82a7341253864cda3a5c46d396402d7fbtomhudson@google.com kEmpty_ClipType = 0, 936bcb671c82a7341253864cda3a5c46d396402d7fbtomhudson@google.com kRect_ClipType, 937bcb671c82a7341253864cda3a5c46d396402d7fbtomhudson@google.com kComplex_ClipType 938bcb671c82a7341253864cda3a5c46d396402d7fbtomhudson@google.com }; 939bcb671c82a7341253864cda3a5c46d396402d7fbtomhudson@google.com 940bcb671c82a7341253864cda3a5c46d396402d7fbtomhudson@google.com /** Returns a description of the total clip; may be cheaper than 941bcb671c82a7341253864cda3a5c46d396402d7fbtomhudson@google.com getting the clip and querying it directly. 942bcb671c82a7341253864cda3a5c46d396402d7fbtomhudson@google.com */ 943bcb671c82a7341253864cda3a5c46d396402d7fbtomhudson@google.com ClipType getClipType() const; 944bcb671c82a7341253864cda3a5c46d396402d7fbtomhudson@google.com 9458a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Return the current device clip (concatenation of all clip calls). 946a707f6087455834fab5525a0c656cc5b6df2ff29reed@google.com * This does not account for the translate in any of the devices. 947a707f6087455834fab5525a0c656cc5b6df2ff29reed@google.com * @return the current device clip (concatenation of all clip calls). 9485e2457ef2eba0c3f2e4c8fc89be7f36659e4f3b1reed@google.com * 949a707f6087455834fab5525a0c656cc5b6df2ff29reed@google.com * DEPRECATED -- call getClipDeviceBounds() instead. 9505e2457ef2eba0c3f2e4c8fc89be7f36659e4f3b1reed@google.com */ 951a707f6087455834fab5525a0c656cc5b6df2ff29reed@google.com const SkRegion& getTotalClip() const; 9525e2457ef2eba0c3f2e4c8fc89be7f36659e4f3b1reed@google.com 95340a1ae4df28810aa5aa5cf2627d8387b2dfb867arobertphillips@google.com /** Return the clip stack. The clip stack stores all the individual 95440a1ae4df28810aa5aa5cf2627d8387b2dfb867arobertphillips@google.com * clips organized by the save/restore frame in which they were 95540a1ae4df28810aa5aa5cf2627d8387b2dfb867arobertphillips@google.com * added. 95640a1ae4df28810aa5aa5cf2627d8387b2dfb867arobertphillips@google.com * @return the current clip stack ("list" of individual clip elements) 95740a1ae4df28810aa5aa5cf2627d8387b2dfb867arobertphillips@google.com */ 95840a1ae4df28810aa5aa5cf2627d8387b2dfb867arobertphillips@google.com const SkClipStack* getClipStack() const { 95940a1ae4df28810aa5aa5cf2627d8387b2dfb867arobertphillips@google.com return &fClipStack; 96040a1ae4df28810aa5aa5cf2627d8387b2dfb867arobertphillips@google.com } 96140a1ae4df28810aa5aa5cf2627d8387b2dfb867arobertphillips@google.com 96290c07ea1d0aa6b7f20252c43fe23ee5ddc1d23cbreed@google.com class ClipVisitor { 96390c07ea1d0aa6b7f20252c43fe23ee5ddc1d23cbreed@google.com public: 96420a550c6ea947f0ab239da1d4ecba209d76a98fdjustinlin@google.com virtual ~ClipVisitor(); 96590c07ea1d0aa6b7f20252c43fe23ee5ddc1d23cbreed@google.com virtual void clipRect(const SkRect&, SkRegion::Op, bool antialias) = 0; 96690c07ea1d0aa6b7f20252c43fe23ee5ddc1d23cbreed@google.com virtual void clipPath(const SkPath&, SkRegion::Op, bool antialias) = 0; 96790c07ea1d0aa6b7f20252c43fe23ee5ddc1d23cbreed@google.com }; 96890c07ea1d0aa6b7f20252c43fe23ee5ddc1d23cbreed@google.com 9695e2457ef2eba0c3f2e4c8fc89be7f36659e4f3b1reed@google.com /** 97090c07ea1d0aa6b7f20252c43fe23ee5ddc1d23cbreed@google.com * Replays the clip operations, back to front, that have been applied to 97190c07ea1d0aa6b7f20252c43fe23ee5ddc1d23cbreed@google.com * the canvas, calling the appropriate method on the visitor for each 97290c07ea1d0aa6b7f20252c43fe23ee5ddc1d23cbreed@google.com * clip. All clips have already been transformed into device space. 9737d7ca79c3e6e6be7b7849b0d9a7fe26effb89c38reed@google.com */ 97490c07ea1d0aa6b7f20252c43fe23ee5ddc1d23cbreed@google.com void replayClips(ClipVisitor*) const; 9758a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 9768a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /////////////////////////////////////////////////////////////////////////// 9778a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 9788a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** After calling saveLayer(), there can be any number of devices that make 9798a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com up the top-most drawing area. LayerIter can be used to iterate through 9808a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com those devices. Note that the iterator is only valid until the next API 9818a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com call made on the canvas. Ownership of all pointers in the iterator stays 9828a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com with the canvas, so none of them should be modified or deleted. 9838a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 9847ffb1b21abcc7bbed5a0fc711f6dd7b9dbb4f577ctguil@chromium.org class SK_API LayerIter /*: SkNoncopyable*/ { 9858a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com public: 9868a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Initialize iterator with canvas, and set values for 1st device */ 9878a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com LayerIter(SkCanvas*, bool skipEmptyClips); 9888a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com ~LayerIter(); 9894b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com 9908a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Return true if the iterator is done */ 9918a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com bool done() const { return fDone; } 9928a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /** Cycle to the next device */ 9938a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void next(); 9944b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com 9958a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com // These reflect the current device in the iterator 9968a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 9971f2f338e23789f3eef168dcbd8171a28820ba6c1robertphillips@google.com SkBaseDevice* device() const; 9988a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com const SkMatrix& matrix() const; 9998a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com const SkRegion& clip() const; 10008a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com const SkPaint& paint() const; 10018a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com int x() const; 10028a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com int y() const; 10034b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com 10048a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com private: 10058a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com // used to embed the SkDrawIter object directly in our instance, w/o 10068a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com // having to expose that class def to the public. There is an assert 10078a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com // in our constructor to ensure that fStorage is large enough 10088a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com // (though needs to be a compile-time-assert!). We use intptr_t to work 10098a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com // safely with 32 and 64 bit machines (to ensure the storage is enough) 1010f2b98d67dcb6fcb3120feede9c72016fc7b3ead8reed@android.com intptr_t fStorage[32]; 10118a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com class SkDrawIter* fImpl; // this points at fStorage 10128a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkPaint fDefaultPaint; 10138a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com bool fDone; 10148a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com }; 10158a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 10168a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comprotected: 101774b461961607fa57a150a9282c410ef0cab38764vandebo@chromium.org // Returns the canvas to be used by DrawIter. Default implementation 10184370aedf7f55af74e9ebb4ad1c2e010c08236dfajunov@google.com // returns this. Subclasses that encapsulate an indirect canvas may 10194370aedf7f55af74e9ebb4ad1c2e010c08236dfajunov@google.com // need to overload this method. The impl must keep track of this, as it 10204370aedf7f55af74e9ebb4ad1c2e010c08236dfajunov@google.com // is not released or deleted by the caller. 10214370aedf7f55af74e9ebb4ad1c2e010c08236dfajunov@google.com virtual SkCanvas* canvasForDrawIter(); 10224370aedf7f55af74e9ebb4ad1c2e010c08236dfajunov@google.com 1023a907ac3e3e3458fbb5d673c3feafb31fd7647b38junov@chromium.org // Clip rectangle bounds. Called internally by saveLayer. 1024a907ac3e3e3458fbb5d673c3feafb31fd7647b38junov@chromium.org // returns false if the entire rectangle is entirely clipped out 1025a907ac3e3e3458fbb5d673c3feafb31fd7647b38junov@chromium.org bool clipRectBounds(const SkRect* bounds, SaveFlags flags, 102649794c0cbd934545854a7b4091af5af7dfb46570reed@google.com SkIRect* intersection); 1027a907ac3e3e3458fbb5d673c3feafb31fd7647b38junov@chromium.org 1028ed8d6bb2be0ed6a20841573682afaa46dea15175junov@chromium.org // Called by child classes that override clipPath and clipRRect to only 1029ed8d6bb2be0ed6a20841573682afaa46dea15175junov@chromium.org // track fast conservative clip bounds, rather than exact clips. 1030ed8d6bb2be0ed6a20841573682afaa46dea15175junov@chromium.org bool updateClipConservativelyUsingBounds(const SkRect&, SkRegion::Op, 1031ed8d6bb2be0ed6a20841573682afaa46dea15175junov@chromium.org bool inverseFilled); 1032ed8d6bb2be0ed6a20841573682afaa46dea15175junov@chromium.org 103397af1a64ae6bdddd346d8babfd9f188279dd6644reed@google.com // notify our surface (if we have one) that we are about to draw, so it 103497af1a64ae6bdddd346d8babfd9f188279dd6644reed@google.com // can perform copy-on-write or invalidate any cached images 103597af1a64ae6bdddd346d8babfd9f188279dd6644reed@google.com void predrawNotify(); 103697af1a64ae6bdddd346d8babfd9f188279dd6644reed@google.com 1037260eae59b4edef636685e640ec13d82490d3474freed@google.com /** DEPRECATED -- use constructor(device) 1038260eae59b4edef636685e640ec13d82490d3474freed@google.com 1039260eae59b4edef636685e640ec13d82490d3474freed@google.com Marked as 'protected' to avoid new clients using this before we can 1040260eae59b4edef636685e640ec13d82490d3474freed@google.com completely remove it. 1041260eae59b4edef636685e640ec13d82490d3474freed@google.com 1042260eae59b4edef636685e640ec13d82490d3474freed@google.com Specify a device for this canvas to draw into. If it is not null, its 1043260eae59b4edef636685e640ec13d82490d3474freed@google.com reference count is incremented. If the canvas was already holding a 1044260eae59b4edef636685e640ec13d82490d3474freed@google.com device, its reference count is decremented. The new device is returned. 1045260eae59b4edef636685e640ec13d82490d3474freed@google.com */ 10461f2f338e23789f3eef168dcbd8171a28820ba6c1robertphillips@google.com virtual SkBaseDevice* setDevice(SkBaseDevice* device); 1047260eae59b4edef636685e640ec13d82490d3474freed@google.com 10488a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comprivate: 10498a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com class MCRec; 10508a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 10515c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com SkClipStack fClipStack; 10528a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkDeque fMCStack; 10538a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com // points to top of stack 10548a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com MCRec* fMCRec; 10558a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com // the first N recs that can fit here mean we won't call malloc 10568a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com uint32_t fMCRecStorage[32]; 10578a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 10588a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkBounder* fBounder; 1059b0a7ace7cb2a7559bbc254a7c93698bc71bbd245junov@chromium.org int fSaveLayerCount; // number of successful saveLayer calls 10608a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 106174bb77ee4c747b8c70c5c613987c9f93df71df06mike@reedtribe.org SkMetaData* fMetaData; 106274bb77ee4c747b8c70c5c613987c9f93df71df06mike@reedtribe.org 106397af1a64ae6bdddd346d8babfd9f188279dd6644reed@google.com SkSurface_Base* fSurfaceBase; 106497af1a64ae6bdddd346d8babfd9f188279dd6644reed@google.com SkSurface_Base* getSurfaceBase() const { return fSurfaceBase; } 106597af1a64ae6bdddd346d8babfd9f188279dd6644reed@google.com void setSurfaceBase(SkSurface_Base* sb) { 106697af1a64ae6bdddd346d8babfd9f188279dd6644reed@google.com fSurfaceBase = sb; 106797af1a64ae6bdddd346d8babfd9f188279dd6644reed@google.com } 106897af1a64ae6bdddd346d8babfd9f188279dd6644reed@google.com friend class SkSurface_Base; 106945c3db827d5bcb7c08bf49eff035be667332ec05junov@chromium.org friend class SkSurface_Gpu; 1070fc84359aa920567e72742877a1249f52d076ad35skia.committer@gmail.com 10718a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com bool fDeviceCMDirty; // cleared by updateDeviceCMCache() 10728a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void updateDeviceCMCache(); 10738a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 10748a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com friend class SkDrawIter; // needs setupDrawForLayerDevice() 10758926b169f6a0dfa4c2129a98ec2aee205f0c8527reed@google.com friend class AutoDrawLooper; 10768a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 10771f2f338e23789f3eef168dcbd8171a28820ba6c1robertphillips@google.com SkBaseDevice* createLayerDevice(SkBitmap::Config, int width, int height, 10781f2f338e23789f3eef168dcbd8171a28820ba6c1robertphillips@google.com bool isOpaque); 1079e97f0856a8044866b12527819d14cdfbcdfd96f2bsalomon@google.com 10801f2f338e23789f3eef168dcbd8171a28820ba6c1robertphillips@google.com SkBaseDevice* init(SkBaseDevice*); 1081f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com 1082f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com // internal methods are not virtual, so they can safely be called by other 1083f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com // canvas apis, without confusing subclasses (like SkPictureRecording) 10849bf380ce7f848dfb5886dd52b82746521454b739robertphillips@google.com void internalDrawBitmap(const SkBitmap&, const SkMatrix& m, const SkPaint* paint); 10857112173c3c4cd1b1e7da8cdf971d71f01dd91299reed@google.com void internalDrawBitmapRect(const SkBitmap& bitmap, const SkRect* src, 1086eed779d866e1e239bfb9ebc6a225b7345a41adf9commit-bot@chromium.org const SkRect& dst, const SkPaint* paint, 1087eed779d866e1e239bfb9ebc6a225b7345a41adf9commit-bot@chromium.org DrawBitmapRectFlags flags); 1088f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com void internalDrawBitmapNine(const SkBitmap& bitmap, const SkIRect& center, 1089f0b5e1190af9807a027c0adba2f1380663c8e910reed@google.com const SkRect& dst, const SkPaint* paint); 1090fa6ac938e64fe11b442d05fe8a90ddac2d1951f9bsalomon@google.com void internalDrawPaint(const SkPaint& paint); 10918926b169f6a0dfa4c2129a98ec2aee205f0c8527reed@google.com int internalSaveLayer(const SkRect* bounds, const SkPaint* paint, 10928926b169f6a0dfa4c2129a98ec2aee205f0c8527reed@google.com SaveFlags, bool justForImageFilter); 10931f2f338e23789f3eef168dcbd8171a28820ba6c1robertphillips@google.com void internalDrawDevice(SkBaseDevice*, int x, int y, const SkPaint*); 1094fa6ac938e64fe11b442d05fe8a90ddac2d1951f9bsalomon@google.com 10958a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com // shared by save() and saveLayer() 10968a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com int internalSave(SaveFlags flags); 10978a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com void internalRestore(); 109852c748b1691f02f90b27c35bc05074fcef709e66bungeman@google.com static void DrawRect(const SkDraw& draw, const SkPaint& paint, 109952c748b1691f02f90b27c35bc05074fcef709e66bungeman@google.com const SkRect& r, SkScalar textSize); 110052c748b1691f02f90b27c35bc05074fcef709e66bungeman@google.com static void DrawTextDecorations(const SkDraw& draw, const SkPaint& paint, 110152c748b1691f02f90b27c35bc05074fcef709e66bungeman@google.com const char text[], size_t byteLength, 110252c748b1691f02f90b27c35bc05074fcef709e66bungeman@google.com SkScalar x, SkScalar y); 11034b226023832011bc3bcdd1e5092ff0645ad0bdeereed@google.com 11048a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com /* These maintain a cache of the clip bounds in local coordinates, 11058a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com (converted to 2s-compliment if floats are slow). 11068a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com */ 11078a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com mutable SkRectCompareType fLocalBoundsCompareType; 11088a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com mutable bool fLocalBoundsCompareTypeDirty; 11098f0a7b8e7334187a5d7d5ab7fde5a3c3009555f5caryclark@google.com bool fAllowSoftClip; 111045a75fb4d0ca5daa0ac5e634238970306e3b5838caryclark@google.com bool fAllowSimplifyClip; 11118a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 11128a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com const SkRectCompareType& getLocalClipBoundsCompareType() const { 11133b3e895df6f8ee0f33010367c215944cd16a8334reed@google.com if (fLocalBoundsCompareTypeDirty) { 11143b3e895df6f8ee0f33010367c215944cd16a8334reed@google.com this->computeLocalClipBoundsCompareType(); 11153b3e895df6f8ee0f33010367c215944cd16a8334reed@google.com fLocalBoundsCompareTypeDirty = false; 11168a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 11173b3e895df6f8ee0f33010367c215944cd16a8334reed@google.com return fLocalBoundsCompareType; 11188a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 11193b3e895df6f8ee0f33010367c215944cd16a8334reed@google.com void computeLocalClipBoundsCompareType() const; 1120f2b98d67dcb6fcb3120feede9c72016fc7b3ead8reed@android.com 112145a75fb4d0ca5daa0ac5e634238970306e3b5838caryclark@google.com 11225c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com class AutoValidateClip : ::SkNoncopyable { 11235c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com public: 11245c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com explicit AutoValidateClip(SkCanvas* canvas) : fCanvas(canvas) { 11255c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com fCanvas->validateClip(); 11265c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com } 11275c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com ~AutoValidateClip() { fCanvas->validateClip(); } 11285c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com 11295c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com private: 11305c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com const SkCanvas* fCanvas; 11315c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com }; 11325c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com 11335c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com#ifdef SK_DEBUG 11345c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com void validateClip() const; 11355c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com#else 11365c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com void validateClip() const {} 11375c3d1471e4908706cd053a5e2ea9ded3a6c2eaebreed@google.com#endif 113815e9d3e66e161ce23df30bc13f8a0c87d196b463robertphillips@google.com 113915e9d3e66e161ce23df30bc13f8a0c87d196b463robertphillips@google.com typedef SkRefCnt INHERITED; 11408a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com}; 11418a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 11428a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com/** Stack helper class to automatically call restoreToCount() on the canvas 11438a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com when this object goes out of scope. Use this to guarantee that the canvas 11448a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com is restored to a known state. 11458a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com*/ 11468a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comclass SkAutoCanvasRestore : SkNoncopyable { 11478a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.compublic: 11482887119a63e314704673b971e9bc9a3461313a2ccommit-bot@chromium.org SkAutoCanvasRestore(SkCanvas* canvas, bool doSave) : fCanvas(canvas), fSaveCount(0) { 11492887119a63e314704673b971e9bc9a3461313a2ccommit-bot@chromium.org if (fCanvas) { 11502887119a63e314704673b971e9bc9a3461313a2ccommit-bot@chromium.org fSaveCount = canvas->getSaveCount(); 11512887119a63e314704673b971e9bc9a3461313a2ccommit-bot@chromium.org if (doSave) { 11522887119a63e314704673b971e9bc9a3461313a2ccommit-bot@chromium.org canvas->save(); 11532887119a63e314704673b971e9bc9a3461313a2ccommit-bot@chromium.org } 11548a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 11558a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 11568a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com ~SkAutoCanvasRestore() { 1157f6c9a5ba5cded8d4f663b13e71e6e1e572322b41reed@google.com if (fCanvas) { 1158f6c9a5ba5cded8d4f663b13e71e6e1e572322b41reed@google.com fCanvas->restoreToCount(fSaveCount); 1159f6c9a5ba5cded8d4f663b13e71e6e1e572322b41reed@google.com } 1160f6c9a5ba5cded8d4f663b13e71e6e1e572322b41reed@google.com } 1161f6c9a5ba5cded8d4f663b13e71e6e1e572322b41reed@google.com 1162f6c9a5ba5cded8d4f663b13e71e6e1e572322b41reed@google.com /** 1163f6c9a5ba5cded8d4f663b13e71e6e1e572322b41reed@google.com * Perform the restore now, instead of waiting for the destructor. Will 1164f6c9a5ba5cded8d4f663b13e71e6e1e572322b41reed@google.com * only do this once. 1165f6c9a5ba5cded8d4f663b13e71e6e1e572322b41reed@google.com */ 1166f6c9a5ba5cded8d4f663b13e71e6e1e572322b41reed@google.com void restore() { 1167f6c9a5ba5cded8d4f663b13e71e6e1e572322b41reed@google.com if (fCanvas) { 1168f6c9a5ba5cded8d4f663b13e71e6e1e572322b41reed@google.com fCanvas->restoreToCount(fSaveCount); 1169f6c9a5ba5cded8d4f663b13e71e6e1e572322b41reed@google.com fCanvas = NULL; 1170f6c9a5ba5cded8d4f663b13e71e6e1e572322b41reed@google.com } 11718a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 11728a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 11738a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comprivate: 11748a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkCanvas* fCanvas; 11758a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com int fSaveCount; 11768a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com}; 11778a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 11780a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com/** Stack helper class to automatically open and close a comment block 11790a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com */ 11800a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.comclass SkAutoCommentBlock : SkNoncopyable { 11810a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.compublic: 11820a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com SkAutoCommentBlock(SkCanvas* canvas, const char* description) { 11830a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com fCanvas = canvas; 11840a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com if (NULL != fCanvas) { 11850a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com fCanvas->beginCommentGroup(description); 11860a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com } 11870a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com } 11880a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com 11890a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com ~SkAutoCommentBlock() { 11900a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com if (NULL != fCanvas) { 11910a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com fCanvas->endCommentGroup(); 11920a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com } 11930a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com } 11940a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com 11950a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.comprivate: 11960a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com SkCanvas* fCanvas; 11970a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com}; 11980a4805e33f8ddb445a2fd061462e715e1707f049robertphillips@google.com 11998a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#endif 1200