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
|
/*
* Copyright 2016 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 "SkBlurImageFilter.h"
#include "SkRRect.h"
#include "SkSurface.h"
#define WIDTH 512
#define HEIGHT 512
namespace skiagm {
class ComplexClipBlurTiledGM : public GM {
public:
ComplexClipBlurTiledGM() {
}
protected:
SkString onShortName() override {
return SkString("complexclip_blur_tiled");
}
SkISize onISize() override {
return SkISize::Make(WIDTH, HEIGHT);
}
void onDraw(SkCanvas* canvas) override {
SkPaint blurPaint;
SkAutoTUnref<SkImageFilter> blur(SkBlurImageFilter::Create(5.0f, 5.0f));
blurPaint.setImageFilter(blur);
const SkScalar tile_size = SkIntToScalar(128);
SkRect bounds;
if (!canvas->getClipBounds(&bounds)) {
bounds.setEmpty();
}
int ts = SkScalarCeilToInt(tile_size);
SkImageInfo info = SkImageInfo::MakeN32Premul(ts, ts);
SkAutoTUnref<SkSurface> tileSurface(canvas->newSurface(info));
if (!tileSurface.get()) {
tileSurface.reset(SkSurface::NewRaster(info));
}
SkCanvas* tileCanvas = tileSurface->getCanvas();
for (SkScalar y = bounds.top(); y < bounds.bottom(); y += tile_size) {
for (SkScalar x = bounds.left(); x < bounds.right(); x += tile_size) {
tileCanvas->save();
tileCanvas->clear(0);
tileCanvas->translate(-x, -y);
SkRect rect = SkRect::MakeWH(WIDTH, HEIGHT);
tileCanvas->saveLayer(&rect, &blurPaint);
SkRRect rrect = SkRRect::MakeRectXY(rect.makeInset(20, 20), 25, 25);
tileCanvas->clipRRect(rrect, SkRegion::kDifference_Op, true);
SkPaint paint;
tileCanvas->drawRect(rect, paint);
tileCanvas->restore();
tileCanvas->restore();
SkAutoTUnref<SkImage> tileImage(tileSurface->newImageSnapshot());
canvas->drawImage(tileImage, x, y);
}
}
}
private:
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static GM* MyFactory1(void*) { return new ComplexClipBlurTiledGM(); }
static GMRegistry reg1(MyFactory1);
}
|
