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
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
|
/*
* Copyright (C) 2012 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 INC. 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 INC. 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 "platform/graphics/GraphicsContext.h"
#include "platform/graphics/BitmapImage.h"
#include "platform/graphics/paint/PaintController.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "third_party/skia/include/core/SkCanvas.h"
#include "third_party/skia/include/core/SkPicture.h"
#include "third_party/skia/include/core/SkShader.h"
#include <gtest/gtest.h>
namespace blink {
#define EXPECT_EQ_RECT(a, b) \
EXPECT_EQ(a.x(), b.x()); \
EXPECT_EQ(a.y(), b.y()); \
EXPECT_EQ(a.width(), b.width()); \
EXPECT_EQ(a.height(), b.height());
#define EXPECT_OPAQUE_PIXELS_IN_RECT(bitmap, opaqueRect) \
{ \
SkAutoLockPixels locker(bitmap); \
for (int y = opaqueRect.y(); y < opaqueRect.maxY(); ++y) \
for (int x = opaqueRect.x(); x < opaqueRect.maxX(); ++x) { \
int alpha = *bitmap.getAddr32(x, y) >> 24; \
EXPECT_EQ(255, alpha); \
} \
}
#define EXPECT_OPAQUE_PIXELS_ONLY_IN_RECT(bitmap, opaqueRect) \
{ \
SkAutoLockPixels locker(bitmap); \
for (int y = 0; y < bitmap.height(); ++y) \
for (int x = 0; x < bitmap.width(); ++x) { \
int alpha = *bitmap.getAddr32(x, y) >> 24; \
bool opaque = opaqueRect.contains(x, y); \
EXPECT_EQ(opaque, alpha == 255); \
} \
}
TEST(GraphicsContextTest, pictureRecording)
{
SkBitmap bitmap;
bitmap.allocN32Pixels(100, 100);
bitmap.eraseColor(0);
SkCanvas canvas(bitmap);
OwnPtr<PaintController> paintController = PaintController::create();
GraphicsContext context(*paintController);
Color opaque(1.0f, 0.0f, 0.0f, 1.0f);
FloatRect bounds(0, 0, 100, 100);
context.beginRecording(bounds);
context.fillRect(FloatRect(0, 0, 50, 50), opaque, SkXfermode::kSrcOver_Mode);
RefPtr<const SkPicture> picture = context.endRecording();
canvas.drawPicture(picture.get());
EXPECT_OPAQUE_PIXELS_ONLY_IN_RECT(bitmap, IntRect(0, 0, 50, 50))
context.beginRecording(bounds);
context.fillRect(FloatRect(0, 0, 100, 100), opaque, SkXfermode::kSrcOver_Mode);
picture = context.endRecording();
// Make sure the opaque region was unaffected by the rect drawn during Picture recording.
EXPECT_OPAQUE_PIXELS_ONLY_IN_RECT(bitmap, IntRect(0, 0, 50, 50))
canvas.drawPicture(picture.get());
EXPECT_OPAQUE_PIXELS_ONLY_IN_RECT(bitmap, IntRect(0, 0, 100, 100))
}
TEST(GraphicsContextTest, UnboundedDrawsAreClipped)
{
SkBitmap bitmap;
bitmap.allocN32Pixels(400, 400);
bitmap.eraseColor(0);
SkCanvas canvas(bitmap);
Color opaque(1.0f, 0.0f, 0.0f, 1.0f);
Color alpha(0.0f, 0.0f, 0.0f, 0.0f);
FloatRect bounds(0, 0, 100, 100);
OwnPtr<PaintController> paintController = PaintController::create();
GraphicsContext context(*paintController);
context.beginRecording(bounds);
context.setShouldAntialias(false);
context.setMiterLimit(1);
context.setStrokeThickness(5);
context.setLineCap(SquareCap);
context.setStrokeStyle(SolidStroke);
// Make skia unable to compute fast bounds for our paths.
DashArray dashArray;
dashArray.append(1);
dashArray.append(0);
context.setLineDash(dashArray, 0);
// Make the device opaque in 10,10 40x40.
context.fillRect(FloatRect(10, 10, 40, 40), opaque, SkXfermode::kSrcOver_Mode);
RefPtr<const SkPicture> picture = context.endRecording();
canvas.drawPicture(picture.get());
EXPECT_OPAQUE_PIXELS_ONLY_IN_RECT(bitmap, IntRect(10, 10, 40, 40));
context.beginRecording(bounds);
// Clip to the left edge of the opaque area.
context.clip(IntRect(10, 10, 10, 40));
// Draw a path that gets clipped. This should destroy the opaque area but only inside the clip.
Path path;
path.moveTo(FloatPoint(10, 10));
path.addLineTo(FloatPoint(40, 40));
SkPaint paint;
paint.setColor(alpha.rgb());
paint.setXfermodeMode(SkXfermode::kSrcOut_Mode);
context.drawPath(path.skPath(), paint);
picture = context.endRecording();
canvas.drawPicture(picture.get());
EXPECT_OPAQUE_PIXELS_IN_RECT(bitmap, IntRect(20, 10, 30, 40));
}
} // namespace blink
|
