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
|
/*
* Copyright 2013 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkPictureImageFilter.h"
#include "SkDevice.h"
#include "SkCanvas.h"
#include "SkReadBuffer.h"
#include "SkSurfaceProps.h"
#include "SkWriteBuffer.h"
#include "SkValidationUtils.h"
SkPictureImageFilter::SkPictureImageFilter(const SkPicture* picture)
: INHERITED(0, 0, nullptr)
, fPicture(SkSafeRef(picture))
, fCropRect(picture ? picture->cullRect() : SkRect::MakeEmpty())
, fPictureResolution(kDeviceSpace_PictureResolution)
, fFilterQuality(kLow_SkFilterQuality) {
}
SkPictureImageFilter::SkPictureImageFilter(const SkPicture* picture, const SkRect& cropRect,
PictureResolution pictureResolution,
SkFilterQuality filterQuality)
: INHERITED(0, 0, nullptr)
, fPicture(SkSafeRef(picture))
, fCropRect(cropRect)
, fPictureResolution(pictureResolution)
, fFilterQuality(filterQuality) {
}
SkPictureImageFilter::~SkPictureImageFilter() {
SkSafeUnref(fPicture);
}
SkFlattenable* SkPictureImageFilter::CreateProc(SkReadBuffer& buffer) {
SkAutoTUnref<SkPicture> picture;
SkRect cropRect;
if (buffer.isCrossProcess() && SkPicture::PictureIOSecurityPrecautionsEnabled()) {
buffer.validate(!buffer.readBool());
} else {
if (buffer.readBool()) {
picture.reset(SkPicture::CreateFromBuffer(buffer));
}
}
buffer.readRect(&cropRect);
PictureResolution pictureResolution;
if (buffer.isVersionLT(SkReadBuffer::kPictureImageFilterResolution_Version)) {
pictureResolution = kDeviceSpace_PictureResolution;
} else {
pictureResolution = (PictureResolution)buffer.readInt();
}
if (kLocalSpace_PictureResolution == pictureResolution) {
//filterLevel is only serialized if pictureResolution is LocalSpace
SkFilterQuality filterQuality;
if (buffer.isVersionLT(SkReadBuffer::kPictureImageFilterLevel_Version)) {
filterQuality = kLow_SkFilterQuality;
} else {
filterQuality = (SkFilterQuality)buffer.readInt();
}
return CreateForLocalSpace(picture, cropRect, filterQuality);
}
return Create(picture, cropRect);
}
void SkPictureImageFilter::flatten(SkWriteBuffer& buffer) const {
if (buffer.isCrossProcess() && SkPicture::PictureIOSecurityPrecautionsEnabled()) {
buffer.writeBool(false);
} else {
bool hasPicture = (fPicture != nullptr);
buffer.writeBool(hasPicture);
if (hasPicture) {
fPicture->flatten(buffer);
}
}
buffer.writeRect(fCropRect);
buffer.writeInt(fPictureResolution);
if (kLocalSpace_PictureResolution == fPictureResolution) {
buffer.writeInt(fFilterQuality);
}
}
bool SkPictureImageFilter::onFilterImage(Proxy* proxy, const SkBitmap&, const Context& ctx,
SkBitmap* result, SkIPoint* offset) const {
if (!fPicture) {
offset->fX = offset->fY = 0;
return true;
}
SkRect floatBounds;
ctx.ctm().mapRect(&floatBounds, fCropRect);
SkIRect bounds = floatBounds.roundOut();
if (!bounds.intersect(ctx.clipBounds())) {
return false;
}
if (bounds.isEmpty()) {
offset->fX = offset->fY = 0;
return true;
}
SkAutoTUnref<SkBaseDevice> device(proxy->createDevice(bounds.width(), bounds.height()));
if (nullptr == device.get()) {
return false;
}
if (kDeviceSpace_PictureResolution == fPictureResolution ||
0 == (ctx.ctm().getType() & ~SkMatrix::kTranslate_Mask)) {
this->drawPictureAtDeviceResolution(device.get(), bounds, ctx);
} else {
this->drawPictureAtLocalResolution(proxy, device.get(), bounds, ctx);
}
*result = device.get()->accessBitmap(false);
offset->fX = bounds.fLeft;
offset->fY = bounds.fTop;
return true;
}
void SkPictureImageFilter::drawPictureAtDeviceResolution(SkBaseDevice* device,
const SkIRect& deviceBounds,
const Context& ctx) const {
SkCanvas canvas(device);
canvas.translate(-SkIntToScalar(deviceBounds.fLeft), -SkIntToScalar(deviceBounds.fTop));
canvas.concat(ctx.ctm());
canvas.drawPicture(fPicture);
}
void SkPictureImageFilter::drawPictureAtLocalResolution(Proxy* proxy, SkBaseDevice* device,
const SkIRect& deviceBounds,
const Context& ctx) const {
SkMatrix inverseCtm;
if (!ctx.ctm().invert(&inverseCtm)) {
return;
}
SkRect localBounds = SkRect::Make(ctx.clipBounds());
inverseCtm.mapRect(&localBounds);
if (!localBounds.intersect(fCropRect)) {
return;
}
SkIRect localIBounds = localBounds.roundOut();
SkAutoTUnref<SkBaseDevice> localDevice(proxy->createDevice(localIBounds.width(), localIBounds.height()));
SkCanvas localCanvas(localDevice);
localCanvas.translate(-SkIntToScalar(localIBounds.fLeft), -SkIntToScalar(localIBounds.fTop));
localCanvas.drawPicture(fPicture);
SkCanvas canvas(device);
canvas.translate(-SkIntToScalar(deviceBounds.fLeft), -SkIntToScalar(deviceBounds.fTop));
canvas.concat(ctx.ctm());
SkPaint paint;
paint.setFilterQuality(fFilterQuality);
canvas.drawBitmap(localDevice.get()->accessBitmap(false), SkIntToScalar(localIBounds.fLeft),
SkIntToScalar(localIBounds.fTop), &paint);
}
#ifndef SK_IGNORE_TO_STRING
void SkPictureImageFilter::toString(SkString* str) const {
str->appendf("SkPictureImageFilter: (");
str->appendf("crop: (%f,%f,%f,%f) ",
fCropRect.fLeft, fCropRect.fTop, fCropRect.fRight, fCropRect.fBottom);
if (fPicture) {
str->appendf("picture: (%f,%f,%f,%f)",
fPicture->cullRect().fLeft, fPicture->cullRect().fTop,
fPicture->cullRect().fRight, fPicture->cullRect().fBottom);
}
str->append(")");
}
#endif
|
