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" |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 12 | #include "SkReadBuffer.h" |
| 13 | #include "SkWriteBuffer.h" |
commit-bot@chromium.org | 1a4fb70 | 2013-09-26 16:09:28 +0000 | [diff] [blame] | 14 | #include "SkMatrix.h" |
| 15 | #include "SkPaint.h" |
| 16 | #include "SkShader.h" |
commit-bot@chromium.org | c0b7e10 | 2013-10-23 17:06:21 +0000 | [diff] [blame] | 17 | #include "SkValidationUtils.h" |
commit-bot@chromium.org | 1a4fb70 | 2013-09-26 16:09:28 +0000 | [diff] [blame] | 18 | |
commit-bot@chromium.org | f7efa50 | 2014-04-11 18:57:00 +0000 | [diff] [blame] | 19 | bool SkTileImageFilter::onFilterImage(Proxy* proxy, const SkBitmap& src, |
| 20 | const Context& ctx, |
commit-bot@chromium.org | ae761f7 | 2014-02-05 22:32:02 +0000 | [diff] [blame] | 21 | SkBitmap* dst, SkIPoint* offset) const { |
commit-bot@chromium.org | 1a4fb70 | 2013-09-26 16:09:28 +0000 | [diff] [blame] | 22 | SkBitmap source = src; |
| 23 | SkImageFilter* input = getInput(0); |
senorblanco@chromium.org | 6776b82 | 2014-01-03 21:48:22 +0000 | [diff] [blame] | 24 | SkIPoint srcOffset = SkIPoint::Make(0, 0); |
senorblanco@chromium.org | 4cb543d | 2014-03-14 15:44:01 +0000 | [diff] [blame] | 25 | if (input && !input->filterImage(proxy, src, ctx, &source, &srcOffset)) { |
commit-bot@chromium.org | 1a4fb70 | 2013-09-26 16:09:28 +0000 | [diff] [blame] | 26 | return false; |
| 27 | } |
| 28 | |
senorblanco@chromium.org | e93e1db | 2013-12-09 18:31:42 +0000 | [diff] [blame] | 29 | SkRect dstRect; |
senorblanco@chromium.org | 4cb543d | 2014-03-14 15:44:01 +0000 | [diff] [blame] | 30 | ctx.ctm().mapRect(&dstRect, fDstRect); |
senorblanco@chromium.org | 6776b82 | 2014-01-03 21:48:22 +0000 | [diff] [blame] | 31 | SkIRect dstIRect; |
| 32 | dstRect.roundOut(&dstIRect); |
| 33 | int w = dstIRect.width(); |
| 34 | int h = dstIRect.height(); |
commit-bot@chromium.org | 1a4fb70 | 2013-09-26 16:09:28 +0000 | [diff] [blame] | 35 | if (!fSrcRect.width() || !fSrcRect.height() || !w || !h) { |
| 36 | return false; |
| 37 | } |
| 38 | |
senorblanco@chromium.org | e93e1db | 2013-12-09 18:31:42 +0000 | [diff] [blame] | 39 | SkRect srcRect; |
senorblanco@chromium.org | 4cb543d | 2014-03-14 15:44:01 +0000 | [diff] [blame] | 40 | ctx.ctm().mapRect(&srcRect, fSrcRect); |
senorblanco@chromium.org | e93e1db | 2013-12-09 18:31:42 +0000 | [diff] [blame] | 41 | SkIRect srcIRect; |
| 42 | srcRect.roundOut(&srcIRect); |
senorblanco@chromium.org | 6776b82 | 2014-01-03 21:48:22 +0000 | [diff] [blame] | 43 | srcIRect.offset(-srcOffset); |
commit-bot@chromium.org | 1a4fb70 | 2013-09-26 16:09:28 +0000 | [diff] [blame] | 44 | SkBitmap subset; |
senorblanco@chromium.org | e93e1db | 2013-12-09 18:31:42 +0000 | [diff] [blame] | 45 | SkIRect bounds; |
| 46 | source.getBounds(&bounds); |
senorblanco@chromium.org | 6776b82 | 2014-01-03 21:48:22 +0000 | [diff] [blame] | 47 | |
senorblanco@chromium.org | e93e1db | 2013-12-09 18:31:42 +0000 | [diff] [blame] | 48 | if (!srcIRect.intersect(bounds)) { |
senorblanco@chromium.org | 6776b82 | 2014-01-03 21:48:22 +0000 | [diff] [blame] | 49 | offset->fX = offset->fY = 0; |
senorblanco@chromium.org | e93e1db | 2013-12-09 18:31:42 +0000 | [diff] [blame] | 50 | return true; |
| 51 | } else if (!source.extractSubset(&subset, srcIRect)) { |
commit-bot@chromium.org | 1a4fb70 | 2013-09-26 16:09:28 +0000 | [diff] [blame] | 52 | return false; |
| 53 | } |
| 54 | |
| 55 | SkAutoTUnref<SkBaseDevice> device(proxy->createDevice(w, h)); |
commit-bot@chromium.org | cd3b15c | 2013-12-04 17:06:49 +0000 | [diff] [blame] | 56 | if (NULL == device.get()) { |
| 57 | return false; |
| 58 | } |
commit-bot@chromium.org | 1a4fb70 | 2013-09-26 16:09:28 +0000 | [diff] [blame] | 59 | SkCanvas canvas(device); |
| 60 | SkPaint paint; |
| 61 | paint.setXfermodeMode(SkXfermode::kSrc_Mode); |
| 62 | |
senorblanco@chromium.org | 6776b82 | 2014-01-03 21:48:22 +0000 | [diff] [blame] | 63 | SkMatrix shaderMatrix; |
| 64 | shaderMatrix.setTranslate(SkIntToScalar(srcOffset.fX), |
| 65 | SkIntToScalar(srcOffset.fY)); |
commit-bot@chromium.org | 9c9005a | 2014-04-28 14:55:39 +0000 | [diff] [blame] | 66 | SkAutoTUnref<SkShader> shader(SkShader::CreateBitmapShader(subset, |
| 67 | SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, |
| 68 | &shaderMatrix)); |
commit-bot@chromium.org | 1a4fb70 | 2013-09-26 16:09:28 +0000 | [diff] [blame] | 69 | paint.setShader(shader); |
senorblanco@chromium.org | 6776b82 | 2014-01-03 21:48:22 +0000 | [diff] [blame] | 70 | canvas.translate(-dstRect.fLeft, -dstRect.fTop); |
commit-bot@chromium.org | 1a4fb70 | 2013-09-26 16:09:28 +0000 | [diff] [blame] | 71 | canvas.drawRect(dstRect, paint); |
| 72 | *dst = device->accessBitmap(false); |
senorblanco@chromium.org | 6776b82 | 2014-01-03 21:48:22 +0000 | [diff] [blame] | 73 | offset->fX = dstIRect.fLeft; |
| 74 | offset->fY = dstIRect.fTop; |
commit-bot@chromium.org | 1a4fb70 | 2013-09-26 16:09:28 +0000 | [diff] [blame] | 75 | return true; |
| 76 | } |
| 77 | |
senorblanco@chromium.org | 0a5c233 | 2014-04-29 15:20:39 +0000 | [diff] [blame^] | 78 | bool SkTileImageFilter::onFilterBounds(const SkIRect& src, const SkMatrix& ctm, |
| 79 | SkIRect* dst) const { |
| 80 | SkRect srcRect; |
| 81 | ctm.mapRect(&srcRect, fSrcRect); |
| 82 | SkIRect srcIRect; |
| 83 | srcRect.roundOut(&srcIRect); |
| 84 | srcIRect.join(src); |
| 85 | *dst = srcIRect; |
| 86 | return true; |
| 87 | } |
| 88 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 89 | SkTileImageFilter::SkTileImageFilter(SkReadBuffer& buffer) |
commit-bot@chromium.org | ce33d60 | 2013-11-25 21:46:31 +0000 | [diff] [blame] | 90 | : INHERITED(1, buffer) { |
commit-bot@chromium.org | 1a4fb70 | 2013-09-26 16:09:28 +0000 | [diff] [blame] | 91 | buffer.readRect(&fSrcRect); |
| 92 | buffer.readRect(&fDstRect); |
commit-bot@chromium.org | c2e9db3 | 2013-12-06 20:14:46 +0000 | [diff] [blame] | 93 | buffer.validate(buffer.isValid() && SkIsValidRect(fSrcRect) && SkIsValidRect(fDstRect)); |
commit-bot@chromium.org | 1a4fb70 | 2013-09-26 16:09:28 +0000 | [diff] [blame] | 94 | } |
| 95 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 96 | void SkTileImageFilter::flatten(SkWriteBuffer& buffer) const { |
commit-bot@chromium.org | 1a4fb70 | 2013-09-26 16:09:28 +0000 | [diff] [blame] | 97 | this->INHERITED::flatten(buffer); |
| 98 | buffer.writeRect(fSrcRect); |
| 99 | buffer.writeRect(fDstRect); |
| 100 | } |