1 /*
2 * Copyright 2011 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 // TODO deprecate imageblur
13
14 #define WIDTH 500
15 #define HEIGHT 500
16
17 static const float kBlurSigmas[] = {
18 0.0, 0.3f, 0.5f, 2.0f, 32.0f, 80.0f };
19
20 const char* kTestStrings[] = {
21 "The quick`~",
22 "brown fox[]",
23 "jumped over",
24 "the lazy@#$",
25 "dog.{}!%^&",
26 "*()+=-\\'\"/",
27 };
28
29 namespace skiagm {
30
31 class BlurImageFilter : public GM {
32 public:
BlurImageFilter()33 BlurImageFilter() {
34 this->setBGColor(0xFFFFFFFF);
35 fName.printf("imageblur2");
36 }
37
38 protected:
39
onShortName()40 SkString onShortName() override {
41 return fName;
42 }
43
onISize()44 SkISize onISize() override {
45 return SkISize::Make(WIDTH, HEIGHT);
46 }
47
onDraw(SkCanvas * canvas)48 void onDraw(SkCanvas* canvas) override {
49 const int sigmaCount = SK_ARRAY_COUNT(kBlurSigmas);
50 const int testStringCount = SK_ARRAY_COUNT(kTestStrings);
51 SkScalar dx = WIDTH / sigmaCount;
52 SkScalar dy = HEIGHT / sigmaCount;
53 const SkScalar textSize = 12;
54
55 for (int x = 0; x < sigmaCount; x++) {
56 SkScalar sigmaX = kBlurSigmas[x];
57 for (int y = 0; y < sigmaCount; y++) {
58 SkScalar sigmaY = kBlurSigmas[y];
59
60 SkPaint paint;
61 SkAutoTUnref<SkImageFilter> blur(SkBlurImageFilter::Create(sigmaX, sigmaY));
62 paint.setImageFilter(blur);
63 canvas->saveLayer(nullptr, &paint);
64
65 SkRandom rand;
66 SkPaint textPaint;
67 textPaint.setAntiAlias(false);
68 textPaint.setColor(sk_tool_utils::color_to_565(rand.nextBits(24) | 0xFF000000));
69 sk_tool_utils::set_portable_typeface(&textPaint);
70 textPaint.setTextSize(textSize);
71
72 for (int i = 0; i < testStringCount; i++) {
73 canvas->drawText(kTestStrings[i],
74 strlen(kTestStrings[i]),
75 SkIntToScalar(x * dx),
76 SkIntToScalar(y * dy + textSize * i + textSize),
77 textPaint);
78 }
79 canvas->restore();
80 }
81 }
82 }
83
84 private:
85 SkString fName;
86
87 typedef GM INHERITED;
88 };
89
90 //////////////////////////////////////////////////////////////////////////////
91
MyFactory(void *)92 static GM* MyFactory(void*) { return new BlurImageFilter; }
93 static GMRegistry reg(MyFactory);
94
95 }
96