commit-bot@chromium.org | 1a4fb70 | 2013-09-26 16:09:28 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2013 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | #include "SkTileImageFilter.h" |
| 9 | #include "SkBitmap.h" |
| 10 | #include "SkCanvas.h" |
| 11 | #include "SkDevice.h" |
| 12 | #include "SkFlattenableBuffers.h" |
| 13 | #include "SkMatrix.h" |
| 14 | #include "SkPaint.h" |
| 15 | #include "SkShader.h" |
commit-bot@chromium.org | c0b7e10 | 2013-10-23 17:06:21 +0000 | [diff] [blame] | 16 | #include "SkValidationUtils.h" |
commit-bot@chromium.org | 1a4fb70 | 2013-09-26 16:09:28 +0000 | [diff] [blame] | 17 | |
| 18 | bool SkTileImageFilter::onFilterImage(Proxy* proxy, const SkBitmap& src, const SkMatrix& ctm, |
| 19 | SkBitmap* dst, SkIPoint* offset) { |
| 20 | SkBitmap source = src; |
| 21 | SkImageFilter* input = getInput(0); |
| 22 | SkIPoint localOffset = SkIPoint::Make(0, 0); |
| 23 | if (input && !input->filterImage(proxy, src, ctm, &source, &localOffset)) { |
| 24 | return false; |
| 25 | } |
| 26 | |
| 27 | int w = SkScalarTruncToInt(fDstRect.width()); |
| 28 | int h = SkScalarTruncToInt(fDstRect.height()); |
| 29 | if (!fSrcRect.width() || !fSrcRect.height() || !w || !h) { |
| 30 | return false; |
| 31 | } |
| 32 | |
| 33 | SkIRect srcRect; |
| 34 | fSrcRect.roundOut(&srcRect); |
| 35 | SkBitmap subset; |
| 36 | if (!source.extractSubset(&subset, srcRect)) { |
| 37 | return false; |
| 38 | } |
| 39 | |
| 40 | SkAutoTUnref<SkBaseDevice> device(proxy->createDevice(w, h)); |
commit-bot@chromium.org | cd3b15c | 2013-12-04 17:06:49 +0000 | [diff] [blame] | 41 | if (NULL == device.get()) { |
| 42 | return false; |
| 43 | } |
commit-bot@chromium.org | 1a4fb70 | 2013-09-26 16:09:28 +0000 | [diff] [blame] | 44 | SkIRect bounds; |
| 45 | source.getBounds(&bounds); |
| 46 | SkCanvas canvas(device); |
| 47 | SkPaint paint; |
| 48 | paint.setXfermodeMode(SkXfermode::kSrc_Mode); |
| 49 | |
skia.committer@gmail.com | 65caeaf | 2013-09-27 07:01:29 +0000 | [diff] [blame] | 50 | SkAutoTUnref<SkShader> shader(SkShader::CreateBitmapShader(subset, |
commit-bot@chromium.org | 1a4fb70 | 2013-09-26 16:09:28 +0000 | [diff] [blame] | 51 | SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode)); |
| 52 | paint.setShader(shader); |
| 53 | SkRect dstRect = fDstRect; |
| 54 | dstRect.offset(SkIntToScalar(localOffset.fX), SkIntToScalar(localOffset.fY)); |
| 55 | canvas.drawRect(dstRect, paint); |
| 56 | *dst = device->accessBitmap(false); |
| 57 | return true; |
| 58 | } |
| 59 | |
commit-bot@chromium.org | ce33d60 | 2013-11-25 21:46:31 +0000 | [diff] [blame] | 60 | SkTileImageFilter::SkTileImageFilter(SkFlattenableReadBuffer& buffer) |
| 61 | : INHERITED(1, buffer) { |
commit-bot@chromium.org | 1a4fb70 | 2013-09-26 16:09:28 +0000 | [diff] [blame] | 62 | buffer.readRect(&fSrcRect); |
| 63 | buffer.readRect(&fDstRect); |
commit-bot@chromium.org | c0b7e10 | 2013-10-23 17:06:21 +0000 | [diff] [blame] | 64 | buffer.validate(SkIsValidRect(fSrcRect) && SkIsValidRect(fDstRect)); |
commit-bot@chromium.org | 1a4fb70 | 2013-09-26 16:09:28 +0000 | [diff] [blame] | 65 | } |
| 66 | |
| 67 | void SkTileImageFilter::flatten(SkFlattenableWriteBuffer& buffer) const { |
| 68 | this->INHERITED::flatten(buffer); |
| 69 | buffer.writeRect(fSrcRect); |
| 70 | buffer.writeRect(fDstRect); |
| 71 | } |