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
|
/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkDevice.h"
#include "SkMetaData.h"
#if SK_PMCOLOR_BYTE_ORDER(B,G,R,A)
const SkCanvas::Config8888 SkBaseDevice::kPMColorAlias = SkCanvas::kBGRA_Premul_Config8888;
#elif SK_PMCOLOR_BYTE_ORDER(R,G,B,A)
const SkCanvas::Config8888 SkBaseDevice::kPMColorAlias = SkCanvas::kRGBA_Premul_Config8888;
#else
const SkCanvas::Config8888 SkBaseDevice::kPMColorAlias = (SkCanvas::Config8888) -1;
#endif
///////////////////////////////////////////////////////////////////////////////
SkBaseDevice::SkBaseDevice()
: fLeakyProperties(SkDeviceProperties::MakeDefault())
#ifdef SK_DEBUG
, fAttachedToCanvas(false)
#endif
{
fOrigin.setZero();
fMetaData = NULL;
}
SkBaseDevice::SkBaseDevice(const SkDeviceProperties& deviceProperties)
: fLeakyProperties(deviceProperties)
#ifdef SK_DEBUG
, fAttachedToCanvas(false)
#endif
{
fOrigin.setZero();
fMetaData = NULL;
}
SkBaseDevice::~SkBaseDevice() {
delete fMetaData;
}
SkBaseDevice* SkBaseDevice::createCompatibleDevice(const SkImageInfo& info) {
#ifdef SK_SUPPORT_LEGACY_COMPATIBLEDEVICE_CONFIG
// We call the old method to support older subclasses.
// If they have, we return their device, else we use the new impl.
SkBitmap::Config config = SkColorTypeToBitmapConfig(info.colorType());
SkBaseDevice* dev = this->onCreateCompatibleDevice(config,
info.width(),
info.height(),
info.isOpaque(),
kGeneral_Usage);
if (dev) {
return dev;
}
// fall through to new impl
#endif
return this->onCreateDevice(info, kGeneral_Usage);
}
SkBaseDevice* SkBaseDevice::createCompatibleDeviceForSaveLayer(const SkImageInfo& info) {
#ifdef SK_SUPPORT_LEGACY_COMPATIBLEDEVICE_CONFIG
// We call the old method to support older subclasses.
// If they have, we return their device, else we use the new impl.
SkBitmap::Config config = SkColorTypeToBitmapConfig(info.colorType());
SkBaseDevice* dev = this->onCreateCompatibleDevice(config,
info.width(),
info.height(),
info.isOpaque(),
kSaveLayer_Usage);
if (dev) {
return dev;
}
// fall through to new impl
#endif
return this->onCreateDevice(info, kSaveLayer_Usage);
}
#ifdef SK_SUPPORT_LEGACY_COMPATIBLEDEVICE_CONFIG
SkBaseDevice* SkBaseDevice::createCompatibleDevice(SkBitmap::Config config,
int width, int height,
bool isOpaque) {
SkImageInfo info = SkImageInfo::Make(width, height,
SkBitmapConfigToColorType(config),
isOpaque ? kOpaque_SkAlphaType
: kPremul_SkAlphaType);
return this->createCompatibleDevice(info);
}
#endif
SkMetaData& SkBaseDevice::getMetaData() {
// metadata users are rare, so we lazily allocate it. If that changes we
// can decide to just make it a field in the device (rather than a ptr)
if (NULL == fMetaData) {
fMetaData = new SkMetaData;
}
return *fMetaData;
}
// TODO: should make this guy pure-virtual.
SkImageInfo SkBaseDevice::imageInfo() const {
return SkImageInfo::MakeUnknown(this->width(), this->height());
}
const SkBitmap& SkBaseDevice::accessBitmap(bool changePixels) {
const SkBitmap& bitmap = this->onAccessBitmap();
if (changePixels) {
bitmap.notifyPixelsChanged();
}
return bitmap;
}
bool SkBaseDevice::readPixels(SkBitmap* bitmap, int x, int y,
SkCanvas::Config8888 config8888) {
if (SkBitmap::kARGB_8888_Config != bitmap->config() ||
NULL != bitmap->getTexture()) {
return false;
}
const SkBitmap& src = this->accessBitmap(false);
SkIRect srcRect = SkIRect::MakeXYWH(x, y, bitmap->width(),
bitmap->height());
SkIRect devbounds = SkIRect::MakeWH(src.width(), src.height());
if (!srcRect.intersect(devbounds)) {
return false;
}
SkBitmap tmp;
SkBitmap* bmp;
if (bitmap->isNull()) {
if (!tmp.allocPixels(SkImageInfo::MakeN32Premul(bitmap->width(),
bitmap->height()))) {
return false;
}
bmp = &tmp;
} else {
bmp = bitmap;
}
SkIRect subrect = srcRect;
subrect.offset(-x, -y);
SkBitmap bmpSubset;
bmp->extractSubset(&bmpSubset, subrect);
bool result = this->onReadPixels(bmpSubset,
srcRect.fLeft,
srcRect.fTop,
config8888);
if (result && bmp == &tmp) {
tmp.swap(*bitmap);
}
return result;
}
SkSurface* SkBaseDevice::newSurface(const SkImageInfo&) { return NULL; }
const void* SkBaseDevice::peekPixels(SkImageInfo*, size_t*) { return NULL; }
void SkBaseDevice::drawDRRect(const SkDraw& draw, const SkRRect& outer,
const SkRRect& inner, const SkPaint& paint) {
SkPath path;
path.addRRect(outer);
path.addRRect(inner);
path.setFillType(SkPath::kEvenOdd_FillType);
const SkMatrix* preMatrix = NULL;
const bool pathIsMutable = true;
this->drawPath(draw, path, paint, preMatrix, pathIsMutable);
}
|
