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 19f7efa502d62af80bd15b03e1131603fb6577c3dfcommit-bot@chromium.orgbool SkTileImageFilter::onFilterImage(Proxy* proxy, const SkBitmap& src, 20f7efa502d62af80bd15b03e1131603fb6577c3dfcommit-bot@chromium.org const Context& ctx, 21ae761f7545d8ebf181d220169afac2056b057b8ccommit-bot@chromium.org SkBitmap* dst, SkIPoint* offset) const { 221a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org SkBitmap source = src; 231a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org SkImageFilter* input = getInput(0); 246776b82d466fa93ccffd251fdf556fe058395444senorblanco@chromium.org SkIPoint srcOffset = SkIPoint::Make(0, 0); 254cb543d6057b692e1099e9f115155f0bf323a0c8senorblanco@chromium.org if (input && !input->filterImage(proxy, src, ctx, &source, &srcOffset)) { 261a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org return false; 271a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org } 281a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org 29e93e1dbf0eced1e1b9aeed7c0c170961e2d61e32senorblanco@chromium.org SkRect dstRect; 304cb543d6057b692e1099e9f115155f0bf323a0c8senorblanco@chromium.org ctx.ctm().mapRect(&dstRect, fDstRect); 316776b82d466fa93ccffd251fdf556fe058395444senorblanco@chromium.org SkIRect dstIRect; 326776b82d466fa93ccffd251fdf556fe058395444senorblanco@chromium.org dstRect.roundOut(&dstIRect); 336776b82d466fa93ccffd251fdf556fe058395444senorblanco@chromium.org int w = dstIRect.width(); 346776b82d466fa93ccffd251fdf556fe058395444senorblanco@chromium.org int h = dstIRect.height(); 351a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org if (!fSrcRect.width() || !fSrcRect.height() || !w || !h) { 361a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org return false; 371a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org } 381a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org 39e93e1dbf0eced1e1b9aeed7c0c170961e2d61e32senorblanco@chromium.org SkRect srcRect; 404cb543d6057b692e1099e9f115155f0bf323a0c8senorblanco@chromium.org ctx.ctm().mapRect(&srcRect, fSrcRect); 41e93e1dbf0eced1e1b9aeed7c0c170961e2d61e32senorblanco@chromium.org SkIRect srcIRect; 42e93e1dbf0eced1e1b9aeed7c0c170961e2d61e32senorblanco@chromium.org srcRect.roundOut(&srcIRect); 436776b82d466fa93ccffd251fdf556fe058395444senorblanco@chromium.org srcIRect.offset(-srcOffset); 441a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org SkBitmap subset; 45e93e1dbf0eced1e1b9aeed7c0c170961e2d61e32senorblanco@chromium.org SkIRect bounds; 46e93e1dbf0eced1e1b9aeed7c0c170961e2d61e32senorblanco@chromium.org source.getBounds(&bounds); 476776b82d466fa93ccffd251fdf556fe058395444senorblanco@chromium.org 48e93e1dbf0eced1e1b9aeed7c0c170961e2d61e32senorblanco@chromium.org if (!srcIRect.intersect(bounds)) { 496776b82d466fa93ccffd251fdf556fe058395444senorblanco@chromium.org offset->fX = offset->fY = 0; 50e93e1dbf0eced1e1b9aeed7c0c170961e2d61e32senorblanco@chromium.org return true; 51e93e1dbf0eced1e1b9aeed7c0c170961e2d61e32senorblanco@chromium.org } else if (!source.extractSubset(&subset, srcIRect)) { 521a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org return false; 531a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org } 541a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org 551a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org SkAutoTUnref<SkBaseDevice> device(proxy->createDevice(w, h)); 56cd3b15ca6364a04b0eeeb4f89c7daa8aefe854c8commit-bot@chromium.org if (NULL == device.get()) { 57cd3b15ca6364a04b0eeeb4f89c7daa8aefe854c8commit-bot@chromium.org return false; 58cd3b15ca6364a04b0eeeb4f89c7daa8aefe854c8commit-bot@chromium.org } 591a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org SkCanvas canvas(device); 601a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org SkPaint paint; 611a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org paint.setXfermodeMode(SkXfermode::kSrc_Mode); 621a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org 636776b82d466fa93ccffd251fdf556fe058395444senorblanco@chromium.org SkMatrix shaderMatrix; 646776b82d466fa93ccffd251fdf556fe058395444senorblanco@chromium.org shaderMatrix.setTranslate(SkIntToScalar(srcOffset.fX), 656776b82d466fa93ccffd251fdf556fe058395444senorblanco@chromium.org SkIntToScalar(srcOffset.fY)); 669c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org SkAutoTUnref<SkShader> shader(SkShader::CreateBitmapShader(subset, 679c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, 689c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org &shaderMatrix)); 691a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org paint.setShader(shader); 706776b82d466fa93ccffd251fdf556fe058395444senorblanco@chromium.org canvas.translate(-dstRect.fLeft, -dstRect.fTop); 711a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org canvas.drawRect(dstRect, paint); 721a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org *dst = device->accessBitmap(false); 736776b82d466fa93ccffd251fdf556fe058395444senorblanco@chromium.org offset->fX = dstIRect.fLeft; 746776b82d466fa93ccffd251fdf556fe058395444senorblanco@chromium.org offset->fY = dstIRect.fTop; 751a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org return true; 761a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org} 771a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org 780a5c233e3b911232c0d6f9a88ded99ecf88b8a97senorblanco@chromium.orgbool SkTileImageFilter::onFilterBounds(const SkIRect& src, const SkMatrix& ctm, 790a5c233e3b911232c0d6f9a88ded99ecf88b8a97senorblanco@chromium.org SkIRect* dst) const { 800a5c233e3b911232c0d6f9a88ded99ecf88b8a97senorblanco@chromium.org SkRect srcRect; 810a5c233e3b911232c0d6f9a88ded99ecf88b8a97senorblanco@chromium.org ctm.mapRect(&srcRect, fSrcRect); 820a5c233e3b911232c0d6f9a88ded99ecf88b8a97senorblanco@chromium.org SkIRect srcIRect; 830a5c233e3b911232c0d6f9a88ded99ecf88b8a97senorblanco@chromium.org srcRect.roundOut(&srcIRect); 840a5c233e3b911232c0d6f9a88ded99ecf88b8a97senorblanco@chromium.org srcIRect.join(src); 850a5c233e3b911232c0d6f9a88ded99ecf88b8a97senorblanco@chromium.org *dst = srcIRect; 860a5c233e3b911232c0d6f9a88ded99ecf88b8a97senorblanco@chromium.org return true; 870a5c233e3b911232c0d6f9a88ded99ecf88b8a97senorblanco@chromium.org} 880a5c233e3b911232c0d6f9a88ded99ecf88b8a97senorblanco@chromium.org 898b0e8ac5f582de80356019406e2975079bf0829dcommit-bot@chromium.orgSkTileImageFilter::SkTileImageFilter(SkReadBuffer& buffer) 90ce33d60187718e7bb01944ee130c9f5d9fb335eccommit-bot@chromium.org : INHERITED(1, buffer) { 911a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org buffer.readRect(&fSrcRect); 921a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org buffer.readRect(&fDstRect); 93c2e9db30d393862bd3485cfe57b4ac06433f2f32commit-bot@chromium.org buffer.validate(buffer.isValid() && SkIsValidRect(fSrcRect) && SkIsValidRect(fDstRect)); 941a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org} 951a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org 968b0e8ac5f582de80356019406e2975079bf0829dcommit-bot@chromium.orgvoid SkTileImageFilter::flatten(SkWriteBuffer& buffer) const { 971a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org this->INHERITED::flatten(buffer); 981a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org buffer.writeRect(fSrcRect); 991a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org buffer.writeRect(fDstRect); 1001a4fb70c8a04db2d92ec821555f91218a989031dcommit-bot@chromium.org} 101