xref: /aosp_15_r20/external/skia/gm/imageblur.cpp (revision c8dee2aa9b3f27cf6c858bd81872bdeb2c07ed17)
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/SkColor.h"
11 #include "include/core/SkFont.h"
12 #include "include/core/SkImageFilter.h"
13 #include "include/core/SkPaint.h"
14 #include "include/core/SkScalar.h"
15 #include "include/core/SkTypeface.h"
16 #include "include/effects/SkImageFilters.h"
17 #include "src/base/SkRandom.h"
18 #include "tools/ToolUtils.h"
19 #include "tools/fonts/FontToolUtils.h"
20 
21 #define WIDTH 500
22 #define HEIGHT 500
23 
imageblurgm_draw(SkScalar fSigmaX,SkScalar fSigmaY,SkCanvas * canvas)24 void imageblurgm_draw(SkScalar fSigmaX, SkScalar fSigmaY, SkCanvas* canvas) {
25         SkPaint paint;
26         paint.setImageFilter(SkImageFilters::Blur(fSigmaX, fSigmaY, nullptr));
27         canvas->saveLayer(nullptr, &paint);
28         const char* str = "The quick brown fox jumped over the lazy dog.";
29 
30         SkRandom rand;
31         SkPaint textPaint;
32         SkFont   font = ToolUtils::DefaultPortableFont();
33         for (int i = 0; i < 25; ++i) {
34             int x = rand.nextULessThan(WIDTH);
35             int y = rand.nextULessThan(HEIGHT);
36             textPaint.setColor(ToolUtils::color_to_565(rand.nextBits(24) | 0xFF000000));
37             font.setSize(rand.nextRangeScalar(0, 300));
38             canvas->drawString(str, SkIntToScalar(x), SkIntToScalar(y), font, textPaint);
39         }
40         canvas->restore();
41 }
DEF_SIMPLE_GM_BG(imageblur,canvas,WIDTH,HEIGHT,SK_ColorBLACK)42 DEF_SIMPLE_GM_BG(imageblur,       canvas, WIDTH, HEIGHT, SK_ColorBLACK) {
43     imageblurgm_draw(24.0f, 0.0f, canvas);
44 }
DEF_SIMPLE_GM_BG(imageblur_large,canvas,WIDTH,HEIGHT,SK_ColorBLACK)45 DEF_SIMPLE_GM_BG(imageblur_large, canvas, WIDTH, HEIGHT, SK_ColorBLACK) {
46     imageblurgm_draw(80.0f, 80.0f, canvas);
47 }
48