SkTileImageFilter.cpp revision 63195181d12751bed2fae6e167c7bed7f4a2de2a
11a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org/* 21a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org * Copyright 2013 Google Inc. 31a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org * 41a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org * Use of this source code is governed by a BSD-style license that can be 51a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org * found in the LICENSE file. 61a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org */ 71a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org 81a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org#include "SkTileImageFilter.h" 91a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org#include "SkBitmap.h" 101a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org#include "SkCanvas.h" 111a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org#include "SkDevice.h" 128b0e8ac5f582de80356019406e2975079bf0829dcommit-bot@chromium.org#include "SkReadBuffer.h" 138b0e8ac5f582de80356019406e2975079bf0829dcommit-bot@chromium.org#include "SkWriteBuffer.h" 141a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org#include "SkMatrix.h" 151a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org#include "SkPaint.h" 161a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org#include "SkShader.h" 17c0b7e10c6a68f59e1653e6c18e6bc954b3c3f0cfcommit-bot@chromium.org#include "SkValidationUtils.h" 181a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org 199fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reedSkTileImageFilter* SkTileImageFilter::Create(const SkRect& srcRect, const SkRect& dstRect, 2024e06d5244ae96e440410e1d76e039983b2efac9senorblanco SkImageFilter* input) { 219fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed if (!SkIsValidRect(srcRect) || !SkIsValidRect(dstRect)) { 229fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed return NULL; 239fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed } 2424e06d5244ae96e440410e1d76e039983b2efac9senorblanco return SkNEW_ARGS(SkTileImageFilter, (srcRect, dstRect, input)); 259fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed} 269fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed 27f7efa502d62af80bd15b03e1131603fb6577c3dfcommit-bot@chromium.orgbool SkTileImageFilter::onFilterImage(Proxy* proxy, const SkBitmap& src, 28f7efa502d62af80bd15b03e1131603fb6577c3dfcommit-bot@chromium.org const Context& ctx, 29ae761f7545d8ebf181d220169afac2056b057b8ccommit-bot@chromium.org SkBitmap* dst, SkIPoint* offset) const { 301a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org SkBitmap source = src; 311a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org SkImageFilter* input = getInput(0); 326776b82d466fa93ccffd251fdf556fe058395444senorblanco@chromium.org SkIPoint srcOffset = SkIPoint::Make(0, 0); 334cb543d6057b692e1099e9f115155f0bf323a0c8senorblanco@chromium.org if (input && !input->filterImage(proxy, src, ctx, &source, &srcOffset)) { 341a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org return false; 351a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org } 361a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org 37e93e1dbf0eced1e1b9aeed7c0c170961e2d61e32senorblanco@chromium.org SkRect dstRect; 384cb543d6057b692e1099e9f115155f0bf323a0c8senorblanco@chromium.org ctx.ctm().mapRect(&dstRect, fDstRect); 39b07a94f1cba3976596ae1a7f23d8c2043ba353f3reed const SkIRect dstIRect = dstRect.roundOut(); 406776b82d466fa93ccffd251fdf556fe058395444senorblanco@chromium.org int w = dstIRect.width(); 416776b82d466fa93ccffd251fdf556fe058395444senorblanco@chromium.org int h = dstIRect.height(); 421a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org if (!fSrcRect.width() || !fSrcRect.height() || !w || !h) { 431a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org return false; 441a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org } 451a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org 46e93e1dbf0eced1e1b9aeed7c0c170961e2d61e32senorblanco@chromium.org SkRect srcRect; 474cb543d6057b692e1099e9f115155f0bf323a0c8senorblanco@chromium.org ctx.ctm().mapRect(&srcRect, fSrcRect); 48e93e1dbf0eced1e1b9aeed7c0c170961e2d61e32senorblanco@chromium.org SkIRect srcIRect; 49e93e1dbf0eced1e1b9aeed7c0c170961e2d61e32senorblanco@chromium.org srcRect.roundOut(&srcIRect); 506776b82d466fa93ccffd251fdf556fe058395444senorblanco@chromium.org srcIRect.offset(-srcOffset); 511a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org SkBitmap subset; 52e93e1dbf0eced1e1b9aeed7c0c170961e2d61e32senorblanco@chromium.org SkIRect bounds; 53e93e1dbf0eced1e1b9aeed7c0c170961e2d61e32senorblanco@chromium.org source.getBounds(&bounds); 546776b82d466fa93ccffd251fdf556fe058395444senorblanco@chromium.org 55e93e1dbf0eced1e1b9aeed7c0c170961e2d61e32senorblanco@chromium.org if (!srcIRect.intersect(bounds)) { 566776b82d466fa93ccffd251fdf556fe058395444senorblanco@chromium.org offset->fX = offset->fY = 0; 57e93e1dbf0eced1e1b9aeed7c0c170961e2d61e32senorblanco@chromium.org return true; 58e93e1dbf0eced1e1b9aeed7c0c170961e2d61e32senorblanco@chromium.org } else if (!source.extractSubset(&subset, srcIRect)) { 591a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org return false; 601a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org } 611a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org 621a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org SkAutoTUnref<SkBaseDevice> device(proxy->createDevice(w, h)); 63cd3b15ca6364a04b0eeeb4f89c7daa8aefe854c8commit-bot@chromium.org if (NULL == device.get()) { 64cd3b15ca6364a04b0eeeb4f89c7daa8aefe854c8commit-bot@chromium.org return false; 65cd3b15ca6364a04b0eeeb4f89c7daa8aefe854c8commit-bot@chromium.org } 661a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org SkCanvas canvas(device); 671a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org SkPaint paint; 681a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org paint.setXfermodeMode(SkXfermode::kSrc_Mode); 691a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org 706776b82d466fa93ccffd251fdf556fe058395444senorblanco@chromium.org SkMatrix shaderMatrix; 716776b82d466fa93ccffd251fdf556fe058395444senorblanco@chromium.org shaderMatrix.setTranslate(SkIntToScalar(srcOffset.fX), 726776b82d466fa93ccffd251fdf556fe058395444senorblanco@chromium.org SkIntToScalar(srcOffset.fY)); 739c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org SkAutoTUnref<SkShader> shader(SkShader::CreateBitmapShader(subset, 749c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, 759c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org &shaderMatrix)); 761a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org paint.setShader(shader); 776776b82d466fa93ccffd251fdf556fe058395444senorblanco@chromium.org canvas.translate(-dstRect.fLeft, -dstRect.fTop); 781a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org canvas.drawRect(dstRect, paint); 791a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org *dst = device->accessBitmap(false); 806776b82d466fa93ccffd251fdf556fe058395444senorblanco@chromium.org offset->fX = dstIRect.fLeft; 816776b82d466fa93ccffd251fdf556fe058395444senorblanco@chromium.org offset->fY = dstIRect.fTop; 821a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org return true; 831a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org} 841a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org 850a5c233e3b911232c0d6f9a88ded99ecf88b8a97senorblanco@chromium.orgbool SkTileImageFilter::onFilterBounds(const SkIRect& src, const SkMatrix& ctm, 860a5c233e3b911232c0d6f9a88ded99ecf88b8a97senorblanco@chromium.org SkIRect* dst) const { 870a5c233e3b911232c0d6f9a88ded99ecf88b8a97senorblanco@chromium.org SkRect srcRect; 880a5c233e3b911232c0d6f9a88ded99ecf88b8a97senorblanco@chromium.org ctm.mapRect(&srcRect, fSrcRect); 890a5c233e3b911232c0d6f9a88ded99ecf88b8a97senorblanco@chromium.org SkIRect srcIRect; 900a5c233e3b911232c0d6f9a88ded99ecf88b8a97senorblanco@chromium.org srcRect.roundOut(&srcIRect); 910a5c233e3b911232c0d6f9a88ded99ecf88b8a97senorblanco@chromium.org srcIRect.join(src); 920a5c233e3b911232c0d6f9a88ded99ecf88b8a97senorblanco@chromium.org *dst = srcIRect; 930a5c233e3b911232c0d6f9a88ded99ecf88b8a97senorblanco@chromium.org return true; 940a5c233e3b911232c0d6f9a88ded99ecf88b8a97senorblanco@chromium.org} 950a5c233e3b911232c0d6f9a88ded99ecf88b8a97senorblanco@chromium.org 969fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reedSkFlattenable* SkTileImageFilter::CreateProc(SkReadBuffer& buffer) { 979fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 1); 989fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed SkRect src, dst; 999fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed buffer.readRect(&src); 1009fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed buffer.readRect(&dst); 10124e06d5244ae96e440410e1d76e039983b2efac9senorblanco return Create(src, dst, common.getInput(0)); 1029fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed} 1031a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org 1048b0e8ac5f582de80356019406e2975079bf0829dcommit-bot@chromium.orgvoid SkTileImageFilter::flatten(SkWriteBuffer& buffer) const { 1051a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org this->INHERITED::flatten(buffer); 1061a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org buffer.writeRect(fSrcRect); 1071a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org buffer.writeRect(fDstRect); 1081a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org} 109f3f5bad7ded35265c0b5d042cc4174386b197a33robertphillips 110f3f5bad7ded35265c0b5d042cc4174386b197a33robertphillips#ifndef SK_IGNORE_TO_STRING 111f3f5bad7ded35265c0b5d042cc4174386b197a33robertphillipsvoid SkTileImageFilter::toString(SkString* str) const { 112f3f5bad7ded35265c0b5d042cc4174386b197a33robertphillips str->appendf("SkTileImageFilter: ("); 11363195181d12751bed2fae6e167c7bed7f4a2de2arobertphillips str->appendf("src: %.2f %.2f %.2f %.2f", 11463195181d12751bed2fae6e167c7bed7f4a2de2arobertphillips fSrcRect.fLeft, fSrcRect.fTop, fSrcRect.fRight, fSrcRect.fBottom); 11563195181d12751bed2fae6e167c7bed7f4a2de2arobertphillips str->appendf(" dst: %.2f %.2f %.2f %.2f", 11663195181d12751bed2fae6e167c7bed7f4a2de2arobertphillips fDstRect.fLeft, fDstRect.fTop, fDstRect.fRight, fDstRect.fBottom); 11763195181d12751bed2fae6e167c7bed7f4a2de2arobertphillips if (this->getInput(0)) { 11863195181d12751bed2fae6e167c7bed7f4a2de2arobertphillips str->appendf("input: ("); 11963195181d12751bed2fae6e167c7bed7f4a2de2arobertphillips this->getInput(0)->toString(str); 12063195181d12751bed2fae6e167c7bed7f4a2de2arobertphillips str->appendf(")"); 12163195181d12751bed2fae6e167c7bed7f4a2de2arobertphillips } 122f3f5bad7ded35265c0b5d042cc4174386b197a33robertphillips str->append(")"); 123f3f5bad7ded35265c0b5d042cc4174386b197a33robertphillips} 124f3f5bad7ded35265c0b5d042cc4174386b197a33robertphillips#endif 125