1 /*
2 * Copyright 2014 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8 #include "gm.h"
9 #include "SkBlurImageFilter.h"
10 #include "SkRandom.h"
11
12 #define WIDTH 640
13 #define HEIGHT 480
14
15 namespace skiagm {
16
17 class ImageBlurTiledGM : public GM {
18 public:
ImageBlurTiledGM(SkScalar sigmaX,SkScalar sigmaY)19 ImageBlurTiledGM(SkScalar sigmaX, SkScalar sigmaY)
20 : fSigmaX(sigmaX), fSigmaY(sigmaY) {
21 }
22
23 protected:
onShortName()24 virtual SkString onShortName() {
25 return SkString("imageblurtiled");
26 }
27
onISize()28 virtual SkISize onISize() {
29 return SkISize::Make(WIDTH, HEIGHT);
30 }
31
onDraw(SkCanvas * canvas)32 virtual void onDraw(SkCanvas* canvas) {
33 SkPaint paint;
34 SkAutoTUnref<SkImageFilter> blur(SkBlurImageFilter::Create(fSigmaX, fSigmaY));
35 paint.setImageFilter(blur);
36 const SkScalar tile_size = SkIntToScalar(128);
37 SkRect bounds;
38 if (!canvas->getClipBounds(&bounds)) {
39 bounds.setEmpty();
40 }
41 for (SkScalar y = bounds.top(); y < bounds.bottom(); y += tile_size) {
42 for (SkScalar x = bounds.left(); x < bounds.right(); x += tile_size) {
43 canvas->save();
44 canvas->clipRect(SkRect::MakeXYWH(x, y, tile_size, tile_size));
45 canvas->saveLayer(nullptr, &paint);
46 const char* str[] = {
47 "The quick",
48 "brown fox",
49 "jumped over",
50 "the lazy dog.",
51 };
52 SkPaint textPaint;
53 textPaint.setAntiAlias(true);
54 sk_tool_utils::set_portable_typeface(&textPaint);
55 textPaint.setTextSize(SkIntToScalar(100));
56 int posY = 0;
57 for (unsigned i = 0; i < SK_ARRAY_COUNT(str); i++) {
58 posY += 100;
59 canvas->drawText(str[i], strlen(str[i]), SkIntToScalar(0),
60 SkIntToScalar(posY), textPaint);
61 }
62 canvas->restore();
63 canvas->restore();
64 }
65 }
66 }
67
68 private:
69 SkScalar fSigmaX;
70 SkScalar fSigmaY;
71
72 typedef GM INHERITED;
73 };
74
75 //////////////////////////////////////////////////////////////////////////////
76
MyFactory1(void *)77 static GM* MyFactory1(void*) { return new ImageBlurTiledGM(3.0f, 3.0f); }
78 static GMRegistry reg1(MyFactory1);
79
80 }
81