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
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/gfx/skia_util.h"
#include "base/i18n/char_iterator.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "third_party/skia/include/core/SkColorFilter.h"
#include "third_party/skia/include/core/SkColorPriv.h"
#include "third_party/skia/include/core/SkUnPreMultiply.h"
#include "third_party/skia/include/effects/SkBlurMaskFilter.h"
#include "third_party/skia/include/effects/SkGradientShader.h"
#include "third_party/skia/include/effects/SkLayerDrawLooper.h"
#include "ui/gfx/image/image_skia_rep.h"
#include "ui/gfx/rect.h"
#include "ui/gfx/shadow_value.h"
namespace gfx {
SkRect RectToSkRect(const gfx::Rect& rect) {
SkRect r;
r.iset(rect.x(), rect.y(), rect.right(), rect.bottom());
return r;
}
SkIRect RectToSkIRect(const gfx::Rect& rect) {
return SkIRect::MakeXYWH(rect.x(), rect.y(), rect.width(), rect.height());
}
gfx::Rect SkRectToRect(const SkRect& rect) {
return gfx::Rect(static_cast<int>(rect.left()),
static_cast<int>(rect.top()),
static_cast<int>(rect.width()),
static_cast<int>(rect.height()));
}
SkShader* CreateImageRepShader(const gfx::ImageSkiaRep& image_rep,
SkShader::TileMode tile_mode,
const SkMatrix& local_matrix) {
SkShader* shader = SkShader::CreateBitmapShader(image_rep.sk_bitmap(),
tile_mode, tile_mode);
SkScalar scale_x = local_matrix.getScaleX();
SkScalar scale_y = local_matrix.getScaleY();
SkScalar bitmap_scale = SkFloatToScalar(image_rep.GetScale());
// Unscale matrix by |bitmap_scale| such that the bitmap is drawn at the
// correct density.
// Convert skew and translation to pixel coordinates.
// Thus, for |bitmap_scale| = 2:
// x scale = 2, x translation = 1 DIP,
// should be converted to
// x scale = 1, x translation = 2 pixels.
SkMatrix shader_scale = local_matrix;
shader_scale.preScale(bitmap_scale, bitmap_scale);
shader_scale.setScaleX(SkScalarDiv(scale_x, bitmap_scale));
shader_scale.setScaleY(SkScalarDiv(scale_y, bitmap_scale));
shader->setLocalMatrix(shader_scale);
return shader;
}
SkShader* CreateGradientShader(int start_point,
int end_point,
SkColor start_color,
SkColor end_color) {
SkColor grad_colors[2] = { start_color, end_color};
SkPoint grad_points[2];
grad_points[0].iset(0, start_point);
grad_points[1].iset(0, end_point);
return SkGradientShader::CreateLinear(
grad_points, grad_colors, NULL, 2, SkShader::kRepeat_TileMode);
}
SkDrawLooper* CreateShadowDrawLooper(const std::vector<ShadowValue>& shadows) {
if (shadows.empty())
return NULL;
SkLayerDrawLooper* looper = new SkLayerDrawLooper;
looper->addLayer(); // top layer of the original.
SkLayerDrawLooper::LayerInfo layer_info;
layer_info.fPaintBits |= SkLayerDrawLooper::kMaskFilter_Bit;
layer_info.fPaintBits |= SkLayerDrawLooper::kColorFilter_Bit;
layer_info.fColorMode = SkXfermode::kSrc_Mode;
for (size_t i = 0; i < shadows.size(); ++i) {
const ShadowValue& shadow = shadows[i];
layer_info.fOffset.set(SkIntToScalar(shadow.x()),
SkIntToScalar(shadow.y()));
// SkBlurMaskFilter's blur radius defines the range to extend the blur from
// original mask, which is half of blur amount as defined in ShadowValue.
SkMaskFilter* blur_mask = SkBlurMaskFilter::Create(
SkDoubleToScalar(shadow.blur() / 2),
SkBlurMaskFilter::kNormal_BlurStyle,
SkBlurMaskFilter::kHighQuality_BlurFlag);
SkColorFilter* color_filter = SkColorFilter::CreateModeFilter(
shadow.color(),
SkXfermode::kSrcIn_Mode);
SkPaint* paint = looper->addLayer(layer_info);
SkSafeUnref(paint->setMaskFilter(blur_mask));
SkSafeUnref(paint->setColorFilter(color_filter));
}
return looper;
}
bool BitmapsAreEqual(const SkBitmap& bitmap1, const SkBitmap& bitmap2) {
void* addr1 = NULL;
void* addr2 = NULL;
size_t size1 = 0;
size_t size2 = 0;
bitmap1.lockPixels();
addr1 = bitmap1.getAddr32(0, 0);
size1 = bitmap1.getSize();
bitmap1.unlockPixels();
bitmap2.lockPixels();
addr2 = bitmap2.getAddr32(0, 0);
size2 = bitmap2.getSize();
bitmap2.unlockPixels();
return (size1 == size2) && (0 == memcmp(addr1, addr2, bitmap1.getSize()));
}
string16 RemoveAcceleratorChar(const string16& s,
char16 accelerator_char,
int* accelerated_char_pos,
int* accelerated_char_span) {
bool escaped = false;
int last_char_pos = -1;
int last_char_span = 0;
base::i18n::UTF16CharIterator chars(&s);
string16 accelerator_removed;
accelerator_removed.reserve(s.size());
while (!chars.end()) {
int32 c = chars.get();
int array_pos = chars.array_pos();
chars.Advance();
if (c != accelerator_char || escaped) {
int span = chars.array_pos() - array_pos;
if (escaped && c != accelerator_char) {
last_char_pos = accelerator_removed.size();
last_char_span = span;
}
for (int i = 0; i < span; i++)
accelerator_removed.push_back(s[array_pos + i]);
escaped = false;
} else {
escaped = true;
}
}
if (accelerated_char_pos)
*accelerated_char_pos = last_char_pos;
if (accelerated_char_span)
*accelerated_char_span = last_char_span;
return accelerator_removed;
}
void ConvertSkiaToRGBA(const unsigned char* skia,
int pixel_width,
unsigned char* rgba) {
int total_length = pixel_width * 4;
for (int i = 0; i < total_length; i += 4) {
const uint32_t pixel_in = *reinterpret_cast<const uint32_t*>(&skia[i]);
// Pack the components here.
int alpha = SkGetPackedA32(pixel_in);
if (alpha != 0 && alpha != 255) {
SkColor unmultiplied = SkUnPreMultiply::PMColorToColor(pixel_in);
rgba[i + 0] = SkColorGetR(unmultiplied);
rgba[i + 1] = SkColorGetG(unmultiplied);
rgba[i + 2] = SkColorGetB(unmultiplied);
rgba[i + 3] = alpha;
} else {
rgba[i + 0] = SkGetPackedR32(pixel_in);
rgba[i + 1] = SkGetPackedG32(pixel_in);
rgba[i + 2] = SkGetPackedB32(pixel_in);
rgba[i + 3] = alpha;
}
}
}
} // namespace gfx
|
