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/gm.h"
9 #include "include/core/SkCanvas.h"
10 #include "include/core/SkFont.h"
11 #include "include/core/SkImageFilter.h"
12 #include "include/core/SkPaint.h"
13 #include "include/core/SkScalar.h"
14 #include "include/core/SkTypeface.h"
15 #include "include/core/SkTypes.h"
16 #include "include/effects/SkImageFilters.h"
17 #include "include/utils/SkRandom.h"
18 #include "tools/ToolUtils.h"
19
20 // TODO deprecate imageblur
21
22 constexpr int kWidth = 500;
23 constexpr int kHeight = 500;
24
DEF_SIMPLE_GM(imageblur2,canvas,kWidth,kHeight)25 DEF_SIMPLE_GM(imageblur2, canvas, kWidth, kHeight) {
26 constexpr float kBlurSigmas[] = { 0.0, 0.3f, 0.5f, 2.0f, 32.0f, 80.0f };
27 const char* kTestStrings[] = {
28 "The quick`~",
29 "brown fox[]",
30 "jumped over",
31 "the lazy@#$",
32 "dog.{}!%^&",
33 "*()+=-\\'\"/",
34 };
35 constexpr int sigmaCount = SK_ARRAY_COUNT(kBlurSigmas);
36 constexpr int testStringCount = SK_ARRAY_COUNT(kTestStrings);
37 constexpr SkScalar dx = kWidth / sigmaCount;
38 constexpr SkScalar dy = kHeight / sigmaCount;
39 constexpr SkScalar textSize = 12;
40
41 SkFont font(ToolUtils::create_portable_typeface(), textSize);
42 font.setEdging(SkFont::Edging::kAlias);
43
44 for (int x = 0; x < sigmaCount; x++) {
45 SkScalar sigmaX = kBlurSigmas[x];
46 for (int y = 0; y < sigmaCount; y++) {
47 SkScalar sigmaY = kBlurSigmas[y];
48
49 SkPaint paint;
50 paint.setImageFilter(SkImageFilters::Blur(sigmaX, sigmaY, nullptr));
51 canvas->saveLayer(nullptr, &paint);
52
53 SkRandom rand;
54 SkPaint textPaint;
55 textPaint.setColor(ToolUtils::color_to_565(rand.nextBits(24) | 0xFF000000));
56 for (int i = 0; i < testStringCount; i++) {
57 canvas->drawString(kTestStrings[i],
58 SkIntToScalar(x * dx),
59 SkIntToScalar(y * dy + textSize * i + textSize),
60 font,
61 textPaint);
62 }
63 canvas->restore();
64 }
65 }
66 }
67