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
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
|
// Copyright (c) 2011 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 "skia/ext/vector_platform_device_skia.h"
#include "skia/ext/bitmap_platform_device.h"
#include "third_party/skia/include/core/SkClipStack.h"
#include "third_party/skia/include/core/SkDraw.h"
#include "third_party/skia/include/core/SkRect.h"
#include "third_party/skia/include/core/SkRegion.h"
#include "third_party/skia/include/core/SkScalar.h"
namespace skia {
SkDevice* VectorPlatformDeviceSkiaFactory::newDevice(SkCanvas* canvas,
SkBitmap::Config config,
int width, int height,
bool isOpaque,
bool isForLayer) {
SkASSERT(config == SkBitmap::kARGB_8888_Config);
SkRefPtr<SkDevice> device = factory_.newDevice(canvas, config, width, height,
isOpaque, isForLayer);
device->unref(); // SkRefPtr and new both took a reference.
SkPDFDevice* pdf_device = static_cast<SkPDFDevice*>(device.get());
return new VectorPlatformDeviceSkia(pdf_device);
}
static inline SkBitmap makeABitmap(int width, int height) {
SkBitmap bitmap;
bitmap.setConfig(SkBitmap::kNo_Config, width, height);
return bitmap;
}
VectorPlatformDeviceSkia::VectorPlatformDeviceSkia(SkPDFDevice* pdf_device)
: PlatformDevice(makeABitmap(pdf_device->width(), pdf_device->height())),
pdf_device_(pdf_device) {
}
VectorPlatformDeviceSkia::~VectorPlatformDeviceSkia() {
}
bool VectorPlatformDeviceSkia::IsVectorial() {
return true;
}
bool VectorPlatformDeviceSkia::IsNativeFontRenderingAllowed() {
return false;
}
PlatformDevice::PlatformSurface VectorPlatformDeviceSkia::BeginPlatformPaint() {
// Even when drawing a vector representation of the page, we have to
// provide a raster surface for plugins to render into - they don't have
// a vector interface. Therefore we create a BitmapPlatformDevice here
// and return the context from it, then layer on the raster data as an
// image in EndPlatformPaint.
DCHECK(raster_surface_ == NULL);
#if defined(OS_WIN)
raster_surface_ = BitmapPlatformDevice::create(pdf_device_->width(),
pdf_device_->height(),
false, /* not opaque */
NULL);
#elif defined(OS_LINUX)
raster_surface_ = BitmapPlatformDevice::Create(pdf_device_->width(),
pdf_device_->height(),
false /* not opaque */);
#endif
raster_surface_->unref(); // SkRefPtr and create both took a reference.
SkCanvas canvas(raster_surface_.get());
return raster_surface_->BeginPlatformPaint();
}
void VectorPlatformDeviceSkia::EndPlatformPaint() {
DCHECK(raster_surface_ != NULL);
SkPaint paint;
// SkPDFDevice checks the passed SkDraw for an empty clip (only). Fake
// it out by setting a non-empty clip.
SkDraw draw;
SkRegion clip(SkIRect::MakeWH(pdf_device_->width(), pdf_device_->height()));
draw.fClip=&clip;
pdf_device_->drawSprite(draw, raster_surface_->accessBitmap(false), 0, 0,
paint);
// BitmapPlatformDevice matches begin and end calls.
raster_surface_->EndPlatformPaint();
raster_surface_ = NULL;
}
uint32_t VectorPlatformDeviceSkia::getDeviceCapabilities() {
return kVector_Capability;
}
int VectorPlatformDeviceSkia::width() const {
return pdf_device_->width();
}
int VectorPlatformDeviceSkia::height() const {
return pdf_device_->height();
}
void VectorPlatformDeviceSkia::setMatrixClip(const SkMatrix& matrix,
const SkRegion& region,
const SkClipStack& stack) {
pdf_device_->setMatrixClip(matrix, region, stack);
}
bool VectorPlatformDeviceSkia::readPixels(const SkIRect& srcRect,
SkBitmap* bitmap) {
return false;
}
void VectorPlatformDeviceSkia::drawPaint(const SkDraw& draw,
const SkPaint& paint) {
pdf_device_->drawPaint(draw, paint);
}
void VectorPlatformDeviceSkia::drawPoints(const SkDraw& draw,
SkCanvas::PointMode mode,
size_t count, const SkPoint pts[],
const SkPaint& paint) {
pdf_device_->drawPoints(draw, mode, count, pts, paint);
}
void VectorPlatformDeviceSkia::drawRect(const SkDraw& draw,
const SkRect& rect,
const SkPaint& paint) {
pdf_device_->drawRect(draw, rect, paint);
}
void VectorPlatformDeviceSkia::drawPath(const SkDraw& draw,
const SkPath& path,
const SkPaint& paint,
const SkMatrix* prePathMatrix,
bool pathIsMutable) {
pdf_device_->drawPath(draw, path, paint, prePathMatrix, pathIsMutable);
}
void VectorPlatformDeviceSkia::drawBitmap(const SkDraw& draw,
const SkBitmap& bitmap,
const SkIRect* srcRectOrNull,
const SkMatrix& matrix,
const SkPaint& paint) {
pdf_device_->drawBitmap(draw, bitmap, srcRectOrNull, matrix, paint);
}
void VectorPlatformDeviceSkia::drawSprite(const SkDraw& draw,
const SkBitmap& bitmap,
int x, int y,
const SkPaint& paint) {
pdf_device_->drawSprite(draw, bitmap, x, y, paint);
}
void VectorPlatformDeviceSkia::drawText(const SkDraw& draw,
const void* text,
size_t byteLength,
SkScalar x,
SkScalar y,
const SkPaint& paint) {
pdf_device_->drawText(draw, text, byteLength, x, y, paint);
}
void VectorPlatformDeviceSkia::drawPosText(const SkDraw& draw,
const void* text,
size_t len,
const SkScalar pos[],
SkScalar constY,
int scalarsPerPos,
const SkPaint& paint) {
pdf_device_->drawPosText(draw, text, len, pos, constY, scalarsPerPos, paint);
}
void VectorPlatformDeviceSkia::drawTextOnPath(const SkDraw& draw,
const void* text,
size_t len,
const SkPath& path,
const SkMatrix* matrix,
const SkPaint& paint) {
pdf_device_->drawTextOnPath(draw, text, len, path, matrix, paint);
}
void VectorPlatformDeviceSkia::drawVertices(const SkDraw& draw,
SkCanvas::VertexMode vmode,
int vertexCount,
const SkPoint vertices[],
const SkPoint texs[],
const SkColor colors[],
SkXfermode* xmode,
const uint16_t indices[],
int indexCount,
const SkPaint& paint) {
pdf_device_->drawVertices(draw, vmode, vertexCount, vertices, texs, colors,
xmode, indices, indexCount, paint);
}
void VectorPlatformDeviceSkia::drawDevice(const SkDraw& draw,
SkDevice* device,
int x,
int y,
const SkPaint& paint) {
SkDevice* real_device = device;
if ((device->getDeviceCapabilities() & kVector_Capability)) {
// Assume that a vectorial device means a VectorPlatformDeviceSkia, we need
// to unwrap the embedded SkPDFDevice.
VectorPlatformDeviceSkia* vector_device =
static_cast<VectorPlatformDeviceSkia*>(device);
real_device = vector_device->pdf_device_.get();
}
pdf_device_->drawDevice(draw, real_device, x, y, paint);
}
#if defined(OS_WIN)
void VectorPlatformDeviceSkia::drawToHDC(HDC dc,
int x,
int y,
const RECT* src_rect) {
SkASSERT(false);
}
#endif
SkDeviceFactory* VectorPlatformDeviceSkia::onNewDeviceFactory() {
return SkNEW(VectorPlatformDeviceSkiaFactory);
}
} // namespace skia
|
