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| 1 /* | |
| 2 * Copyright 2012 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 "SkBitmapSource.h" | |
| 9 #include "SkDevice.h" | |
| 10 #include "SkCanvas.h" | |
| 11 #include "SkReadBuffer.h" | |
| 12 #include "SkWriteBuffer.h" | |
| 13 #include "SkValidationUtils.h" | |
| 14 | |
| 15 SkBitmapSource::SkBitmapSource(const SkBitmap& bitmap) | |
| 16 : INHERITED(0, 0) | |
| 17 , fBitmap(bitmap) | |
| 18 , fSrcRect(SkRect::MakeWH(SkIntToScalar(bitmap.width()), | |
| 19 SkIntToScalar(bitmap.height()))) | |
| 20 , fDstRect(fSrcRect) | |
| 21 , fFilterQuality(kHigh_SkFilterQuality) { | |
| 22 } | |
| 23 | |
| 24 SkBitmapSource::SkBitmapSource(const SkBitmap& bitmap, | |
| 25 const SkRect& srcRect, const SkRect& dstRect, | |
| 26 SkFilterQuality filterQuality) | |
| 27 : INHERITED(0, 0) | |
| 28 , fBitmap(bitmap) | |
| 29 , fSrcRect(srcRect) | |
| 30 , fDstRect(dstRect) | |
| 31 , fFilterQuality(filterQuality) { | |
| 32 } | |
| 33 | |
| 34 SkFlattenable* SkBitmapSource::CreateProc(SkReadBuffer& buffer) { | |
| 35 SkFilterQuality filterQuality; | |
| 36 if (buffer.isVersionLT(SkReadBuffer::kBitmapSourceFilterQuality_Version)) { | |
| 37 filterQuality = kHigh_SkFilterQuality; | |
| 38 } else { | |
| 39 filterQuality = (SkFilterQuality)buffer.readInt(); | |
| 40 } | |
| 41 SkRect src, dst; | |
| 42 buffer.readRect(&src); | |
| 43 buffer.readRect(&dst); | |
| 44 SkBitmap bitmap; | |
| 45 if (!buffer.readBitmap(&bitmap)) { | |
| 46 return nullptr; | |
| 47 } | |
| 48 return SkBitmapSource::Create(bitmap, src, dst, filterQuality); | |
| 49 } | |
| 50 | |
| 51 void SkBitmapSource::flatten(SkWriteBuffer& buffer) const { | |
| 52 buffer.writeInt(fFilterQuality); | |
| 53 buffer.writeRect(fSrcRect); | |
| 54 buffer.writeRect(fDstRect); | |
| 55 buffer.writeBitmap(fBitmap); | |
| 56 } | |
| 57 | |
| 58 bool SkBitmapSource::onFilterImage(Proxy* proxy, const SkBitmap&, const Context&
ctx, | |
| 59 SkBitmap* result, SkIPoint* offset) const { | |
| 60 SkRect bounds, dstRect; | |
| 61 fBitmap.getBounds(&bounds); | |
| 62 ctx.ctm().mapRect(&dstRect, fDstRect); | |
| 63 if (fSrcRect == bounds && dstRect == bounds) { | |
| 64 // No regions cropped out or resized; return entire bitmap. | |
| 65 *result = fBitmap; | |
| 66 offset->fX = offset->fY = 0; | |
| 67 return true; | |
| 68 } | |
| 69 | |
| 70 const SkIRect dstIRect = dstRect.roundOut(); | |
| 71 SkAutoTUnref<SkBaseDevice> device(proxy->createDevice(dstIRect.width(), dstI
Rect.height())); | |
| 72 if (nullptr == device.get()) { | |
| 73 return false; | |
| 74 } | |
| 75 | |
| 76 SkCanvas canvas(device.get()); | |
| 77 SkPaint paint; | |
| 78 | |
| 79 // Subtract off the integer component of the translation (will be applied in
loc, below). | |
| 80 dstRect.offset(-SkIntToScalar(dstIRect.fLeft), -SkIntToScalar(dstIRect.fTop)
); | |
| 81 paint.setXfermodeMode(SkXfermode::kSrc_Mode); | |
| 82 // FIXME: this probably shouldn't be necessary, but drawBitmapRect asserts | |
| 83 // None filtering when it's translate-only | |
| 84 paint.setFilterQuality( | |
| 85 fSrcRect.width() == dstRect.width() && fSrcRect.height() == dstRect.heig
ht() ? | |
| 86 kNone_SkFilterQuality : fFilterQuality); | |
| 87 canvas.drawBitmapRect(fBitmap, fSrcRect, dstRect, &paint, SkCanvas::kStrict_
SrcRectConstraint); | |
| 88 | |
| 89 *result = device.get()->accessBitmap(false); | |
| 90 offset->fX = dstIRect.fLeft; | |
| 91 offset->fY = dstIRect.fTop; | |
| 92 | |
| 93 return true; | |
| 94 } | |
| 95 | |
| 96 void SkBitmapSource::computeFastBounds(const SkRect&, SkRect* dst) const { | |
| 97 *dst = fDstRect; | |
| 98 } | |
| 99 | |
| 100 #ifndef SK_IGNORE_TO_STRING | |
| 101 void SkBitmapSource::toString(SkString* str) const { | |
| 102 str->appendf("SkBitmapSource: ("); | |
| 103 str->appendf("src: (%f,%f,%f,%f) dst: (%f,%f,%f,%f) ", | |
| 104 fSrcRect.fLeft, fSrcRect.fTop, fSrcRect.fRight, fSrcRect.fBotto
m, | |
| 105 fDstRect.fLeft, fDstRect.fTop, fDstRect.fRight, fDstRect.fBotto
m); | |
| 106 str->appendf("bitmap: (%d,%d)", | |
| 107 fBitmap.width(), fBitmap.height()); | |
| 108 str->append(")"); | |
| 109 } | |
| 110 #endif | |
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Chromium Code Reviews
Issue 1363913002:
Remove SkBitmapSource (Closed)
Base URL: https://chromium.googlesource.com/skia.git@master