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
|
/*
* 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 "gm.h"
#include "SkCanvas.h"
#include "SkPath.h"
#include "SkSurface.h"
#include "SkPicture.h"
static void draw_content(SkCanvas* canvas) {
SkImageInfo info = canvas->imageInfo();
SkPaint paint;
paint.setAntiAlias(true);
canvas->drawCircle(SkScalarHalf(info.width()), SkScalarHalf(info.height()),
SkScalarHalf(info.width()), paint);
}
class PeekPixelsGM : public skiagm::GM {
public:
PeekPixelsGM() {}
protected:
virtual SkString onShortName() SK_OVERRIDE {
return SkString("peekpixels");
}
virtual SkISize onISize() SK_OVERRIDE {
return SkISize::Make(360, 120);
}
virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
SkImageInfo info = SkImageInfo::MakeN32Premul(100, 100);
SkAutoTUnref<SkSurface> surface(canvas->newSurface(info));
if (surface.get()) {
SkCanvas* surfCanvas = surface->getCanvas();
draw_content(surfCanvas);
SkBitmap bitmap;
// test peekPixels
{
SkImageInfo info;
size_t rowBytes;
const void* addr = surfCanvas->peekPixels(&info, &rowBytes);
if (addr && bitmap.installPixels(info, const_cast<void*>(addr), rowBytes)) {
canvas->drawBitmap(bitmap, 0, 0, NULL);
}
}
// test ROCanvasPixels
canvas->translate(120, 0);
SkAutoROCanvasPixels ropixels(surfCanvas);
if (ropixels.asROBitmap(&bitmap)) {
canvas->drawBitmap(bitmap, 0, 0, NULL);
}
// test Surface
canvas->translate(120, 0);
surface->draw(canvas, 0, 0, NULL);
}
}
virtual uint32_t onGetFlags() const {
// we explicitly test peekPixels and readPixels, neither of which
// return something for a picture-backed canvas, so we skip that test.
return kSkipPicture_Flag;
}
private:
typedef skiagm::GM INHERITED;
};
DEF_GM( return SkNEW(PeekPixelsGM); )
|
