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| 1 /* |
| 2 * Copyright 2013 The Android Open Source Project |
| 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 "SkPictureImageFilter.h" |
| 9 #include "SkDevice.h" |
| 10 #include "SkCanvas.h" |
| 11 #include "SkFlattenableBuffers.h" |
| 12 #include "SkValidationUtils.h" |
| 13 |
| 14 SkPictureImageFilter::SkPictureImageFilter(SkPicture* picture) |
| 15 : INHERITED(0, 0), |
| 16 fPicture(picture), |
| 17 fRect(SkRect::MakeWH(picture ? SkIntToScalar(picture->width()) : 0, |
| 18 picture ? SkIntToScalar(picture->height()) : 0)) { |
| 19 SkSafeRef(fPicture); |
| 20 } |
| 21 |
| 22 SkPictureImageFilter::SkPictureImageFilter(SkPicture* picture, const SkRect& rec
t) |
| 23 : INHERITED(0, 0), |
| 24 fPicture(picture), |
| 25 fRect(rect) { |
| 26 SkSafeRef(fPicture); |
| 27 } |
| 28 |
| 29 SkPictureImageFilter::~SkPictureImageFilter() { |
| 30 SkSafeUnref(fPicture); |
| 31 } |
| 32 |
| 33 SkPictureImageFilter::SkPictureImageFilter(SkFlattenableReadBuffer& buffer) |
| 34 : INHERITED(0, buffer) { |
| 35 // FIXME: unflatten picture here. |
| 36 buffer.readRect(&fRect); |
| 37 } |
| 38 |
| 39 void SkPictureImageFilter::flatten(SkFlattenableWriteBuffer& buffer) const { |
| 40 this->INHERITED::flatten(buffer); |
| 41 // FIXME: flatten picture here. |
| 42 buffer.writeRect(fRect); |
| 43 } |
| 44 |
| 45 bool SkPictureImageFilter::onFilterImage(Proxy* proxy, const SkBitmap&, const Sk
Matrix& matrix, |
| 46 SkBitmap* result, SkIPoint* offset) { |
| 47 if (!fPicture) { |
| 48 return true; |
| 49 } |
| 50 |
| 51 SkRect floatBounds; |
| 52 SkIRect bounds; |
| 53 matrix.mapRect(&floatBounds, fRect); |
| 54 floatBounds.roundOut(&bounds); |
| 55 |
| 56 if (bounds.isEmpty()) { |
| 57 return true; |
| 58 } |
| 59 |
| 60 SkAutoTUnref<SkBaseDevice> device(proxy->createDevice(bounds.width(), bounds
.height())); |
| 61 if (NULL == device.get()) { |
| 62 return false; |
| 63 } |
| 64 |
| 65 SkCanvas canvas(device.get()); |
| 66 SkPaint paint; |
| 67 |
| 68 canvas.translate(-SkIntToScalar(bounds.fLeft), -SkIntToScalar(bounds.fTop)); |
| 69 canvas.concat(matrix); |
| 70 canvas.drawPicture(*fPicture); |
| 71 |
| 72 *result = device.get()->accessBitmap(false); |
| 73 offset->fX += bounds.fLeft; |
| 74 offset->fY += bounds.fTop; |
| 75 return true; |
| 76 } |
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