OLD | NEW |
| (Empty) |
1 /* | |
2 * Copyright 2015 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 "SkBitmap.h" | |
9 #include "SkBitmapRegionDecoderInterface.h" | |
10 #include "SkScanlineDecoder.h" | |
11 | |
12 /* | |
13 * This class implements SkBitmapRegionDecoder using an SkScanlineDecoder and | |
14 * an SkCanvas. It uses the scanline decoder to subset the height. It then | |
15 * will subset the width and scale by drawing to an SkCanvas. | |
16 */ | |
17 // FIXME (msarett): This implementation does not support WEBP, because WEBP | |
18 // does not have a scanline decoder. | |
19 class SkBitmapRegionCanvas : public SkBitmapRegionDecoderInterface { | |
20 public: | |
21 | |
22 /* | |
23 * Takes ownership of pointer to decoder | |
24 */ | |
25 SkBitmapRegionCanvas(SkScanlineDecoder* decoder); | |
26 | |
27 /* | |
28 * Three differences from the Android version: | |
29 * Returns a Skia bitmap instead of an Android bitmap. | |
30 * Android version attempts to reuse a recycled bitmap. | |
31 * Removed the options object and used parameters for color type and | |
32 * sample size. | |
33 */ | |
34 SkBitmap* decodeRegion(int start_x, int start_y, int width, int height, | |
35 int sampleSize, SkColorType prefColorType) override; | |
36 | |
37 private: | |
38 | |
39 SkAutoTDelete<SkScanlineDecoder> fDecoder; | |
40 | |
41 typedef SkBitmapRegionDecoderInterface INHERITED; | |
42 | |
43 }; | |
OLD | NEW |