1 /*
2 * Copyright (c) 2013, Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 * * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include "config.h"
32
33 #include "platform/graphics/ImageBufferSurface.h"
34
35 #include "platform/graphics/ImageBuffer.h"
36 #include "third_party/skia/include/core/SkCanvas.h"
37 #include "third_party/skia/include/core/SkDevice.h"
38 #include "third_party/skia/include/core/SkPicture.h"
39
40 namespace blink {
41
ImageBufferSurface(const IntSize & size,OpacityMode opacityMode)42 ImageBufferSurface::ImageBufferSurface(const IntSize& size, OpacityMode opacityMode)
43 : m_opacityMode(opacityMode)
44 , m_size(size)
45 {
46 setIsHidden(false);
47 }
48
getPicture()49 PassRefPtr<SkPicture> ImageBufferSurface::getPicture()
50 {
51 return nullptr;
52 }
53
clear()54 void ImageBufferSurface::clear()
55 {
56 // Clear the background transparent or opaque, as required. It would be nice if this wasn't
57 // required, but the canvas is currently filled with the magic transparency
58 // color. Can we have another way to manage this?
59 if (isValid()) {
60 if (m_opacityMode == Opaque)
61 canvas()->drawARGB(255, 0, 0, 0, SkXfermode::kSrc_Mode);
62 else
63 canvas()->drawARGB(0, 0, 0, 0, SkXfermode::kClear_Mode);
64 didClearCanvas();
65 }
66 }
67
bitmap()68 const SkBitmap& ImageBufferSurface::bitmap()
69 {
70 ASSERT(canvas());
71 willAccessPixels();
72 return canvas()->getTopDevice()->accessBitmap(false);
73 }
74
cachedBitmap() const75 const SkBitmap& ImageBufferSurface::cachedBitmap() const
76 {
77 DEFINE_STATIC_LOCAL(SkBitmap, nullBitmap, ());
78 return nullBitmap;
79 }
80
81 } // namespace blink
82