1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
|
/*
* Copyright (C) 2011 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "PlatformCanvas.h"
#include "GraphicsContext.h"
#if USE(SKIA)
#include "NativeImageSkia.h"
#include "PlatformContextSkia.h"
#include "SkColorPriv.h"
#include "skia/ext/platform_canvas.h"
#elif USE(CG)
#include <CoreGraphics/CGBitmapContext.h>
#endif
namespace WebCore {
PlatformCanvas::PlatformCanvas()
{
}
PlatformCanvas::~PlatformCanvas()
{
}
void PlatformCanvas::resize(const IntSize& size)
{
m_size = size;
#if USE(SKIA)
m_skiaCanvas = skia::CreateBitmapCanvas(size.width(), size.height(), false);
#elif USE(CG)
size_t bufferSize = size.width() * size.height() * 4;
m_pixelData = adoptArrayPtr(new uint8_t[bufferSize]);
memset(m_pixelData.get(), 0, bufferSize);
#endif
}
PlatformCanvas::AutoLocker::AutoLocker(PlatformCanvas* canvas)
: m_canvas(canvas)
, m_pixels(0)
{
#if USE(SKIA)
if (m_canvas->m_skiaCanvas) {
m_bitmap = &m_canvas->m_skiaCanvas->getDevice()->accessBitmap(false);
m_bitmap->lockPixels();
if (m_bitmap->config() == SkBitmap::kARGB_8888_Config)
m_pixels = static_cast<uint8_t*>(m_bitmap->getPixels());
} else
m_bitmap = 0;
#elif USE(CG)
if (canvas->m_pixelData)
m_pixels = &canvas->m_pixelData[0];
#endif
}
PlatformCanvas::AutoLocker::~AutoLocker()
{
#if USE(SKIA)
if (m_bitmap)
m_bitmap->unlockPixels();
#endif
}
PlatformCanvas::Painter::Painter(PlatformCanvas* canvas, PlatformCanvas::Painter::TextOption option)
{
#if USE(SKIA)
m_skiaContext = adoptPtr(new PlatformContextSkia(canvas->m_skiaCanvas.get()));
m_skiaContext->setDrawingToImageBuffer(option == GrayscaleText);
m_context = adoptPtr(new GraphicsContext(reinterpret_cast<PlatformGraphicsContext*>(m_skiaContext.get())));
#elif USE(CG)
m_colorSpace = CGColorSpaceCreateDeviceRGB();
size_t rowBytes = canvas->size().width() * 4;
m_contextCG = CGBitmapContextCreate(canvas->m_pixelData.get(),
canvas->size().width(), canvas->size().height(), 8, rowBytes,
m_colorSpace.get(),
kCGImageAlphaPremultipliedFirst | kCGBitmapByteOrder32Host);
CGContextTranslateCTM(m_contextCG.get(), 0, canvas->size().height());
CGContextScaleCTM(m_contextCG.get(), 1, -1);
m_context = adoptPtr(new GraphicsContext(m_contextCG.get()));
#endif
}
PlatformCanvas::Painter::~Painter()
{
}
} // namespace WebCore
|