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1 /* | 1 /* |
2 * Copyright 2012 The Android Open Source Project | 2 * Copyright 2012 The Android Open Source Project |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #include "SkBitmapSource.h" | 8 #include "SkBitmapSource.h" |
| 9 #include "SkDevice.h" |
| 10 #include "SkCanvas.h" |
| 11 #include "SkFlattenableBuffers.h" |
| 12 #include "SkValidationUtils.h" |
9 | 13 |
10 SkBitmapSource::SkBitmapSource(const SkBitmap& bitmap) | 14 SkBitmapSource::SkBitmapSource(const SkBitmap& bitmap) |
11 : INHERITED(0, 0), | 15 : INHERITED(0, 0), |
12 fBitmap(bitmap) { | 16 fBitmap(bitmap), |
| 17 fSrcRect(SkRect::MakeWH(SkIntToScalar(bitmap.width()), |
| 18 SkIntToScalar(bitmap.height()))), |
| 19 fDstRect(fSrcRect) { |
| 20 } |
| 21 |
| 22 SkBitmapSource::SkBitmapSource(const SkBitmap& bitmap, const SkRect& srcRect, co
nst SkRect& dstRect) |
| 23 : INHERITED(0, 0), |
| 24 fBitmap(bitmap), |
| 25 fSrcRect(srcRect), |
| 26 fDstRect(dstRect) { |
13 } | 27 } |
14 | 28 |
15 SkBitmapSource::SkBitmapSource(SkFlattenableReadBuffer& buffer) | 29 SkBitmapSource::SkBitmapSource(SkFlattenableReadBuffer& buffer) |
16 : INHERITED(0, buffer) { | 30 : INHERITED(0, buffer) { |
17 fBitmap.unflatten(buffer); | 31 fBitmap.unflatten(buffer); |
| 32 buffer.readRect(&fSrcRect); |
| 33 buffer.readRect(&fDstRect); |
| 34 buffer.validate(SkIsValidRect(fSrcRect) && SkIsValidRect(fDstRect)); |
18 } | 35 } |
19 | 36 |
20 void SkBitmapSource::flatten(SkFlattenableWriteBuffer& buffer) const { | 37 void SkBitmapSource::flatten(SkFlattenableWriteBuffer& buffer) const { |
21 this->INHERITED::flatten(buffer); | 38 this->INHERITED::flatten(buffer); |
22 fBitmap.flatten(buffer); | 39 fBitmap.flatten(buffer); |
| 40 buffer.writeRect(fSrcRect); |
| 41 buffer.writeRect(fDstRect); |
23 } | 42 } |
24 | 43 |
25 bool SkBitmapSource::onFilterImage(Proxy*, const SkBitmap&, const SkMatrix&, | 44 bool SkBitmapSource::onFilterImage(Proxy* proxy, const SkBitmap&, const SkMatrix
& matrix, |
26 SkBitmap* result, SkIPoint* offset) { | 45 SkBitmap* result, SkIPoint* offset) { |
27 *result = fBitmap; | 46 SkRect bounds, dstRect; |
| 47 fBitmap.getBounds(&bounds); |
| 48 matrix.mapRect(&dstRect, fDstRect); |
| 49 if (fSrcRect == bounds && dstRect == bounds) { |
| 50 // No regions cropped out or resized; return entire bitmap. |
| 51 *result = fBitmap; |
| 52 return true; |
| 53 } |
| 54 SkIRect dstIRect; |
| 55 dstRect.roundOut(&dstIRect); |
| 56 |
| 57 SkAutoTUnref<SkBaseDevice> device(proxy->createDevice(dstIRect.width(), dstI
Rect.height())); |
| 58 if (NULL == device.get()) { |
| 59 return false; |
| 60 } |
| 61 |
| 62 SkCanvas canvas(device.get()); |
| 63 SkPaint paint; |
| 64 |
| 65 // Subtract off the integer component of the translation (will be applied in
loc, below). |
| 66 dstRect.offset(-SkIntToScalar(dstIRect.fLeft), -SkIntToScalar(dstIRect.fTop)
); |
| 67 paint.setXfermodeMode(SkXfermode::kSrc_Mode); |
| 68 // FIXME: this probably shouldn't be necessary, but drawBitmapRectToRect ass
erts |
| 69 // None filtering when it's translate-only |
| 70 paint.setFilterLevel( |
| 71 fSrcRect.width() == dstRect.width() && fSrcRect.height() == dstRect.heig
ht() ? |
| 72 SkPaint::kNone_FilterLevel : SkPaint::kMedium_FilterLevel); |
| 73 canvas.drawBitmapRectToRect(fBitmap, &fSrcRect, dstRect, &paint); |
| 74 |
| 75 *result = device.get()->accessBitmap(false); |
| 76 offset->fX += dstIRect.fLeft; |
| 77 offset->fY += dstIRect.fTop; |
28 return true; | 78 return true; |
29 } | 79 } |
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