gm/imageblur.cpp

   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 "sk_tool_utils.h"
  10 #include "SkBlurImageFilter.h"
  11 #include "SkRandom.h"
  12
  13 #define WIDTH 500
  14 #define HEIGHT 500
  15
  16 void imageblurgm_draw(SkScalar fSigmaX, SkScalar fSigmaY, SkCanvas* canvas) {
  17         SkPaint paint;
  18         paint.setImageFilter(SkBlurImageFilter::Make(fSigmaX, fSigmaY, nullptr));
  19         canvas->saveLayer(nullptr, &paint);
  20         const char* str = "The quick brown fox jumped over the lazy dog.";
  21
  22         SkRandom rand;
  23         SkPaint textPaint;
  24         textPaint.setAntiAlias(true);
  25         sk_tool_utils::set_portable_typeface(&textPaint);
  26         for (int i = 0; i < 25; ++i) {
  27             int x = rand.nextULessThan(WIDTH);
  28             int y = rand.nextULessThan(HEIGHT);
  29             textPaint.setColor(sk_tool_utils::color_to_565(rand.nextBits(24) | 0xFF000000));
  30             textPaint.setTextSize(rand.nextRangeScalar(0, 300));
  31             canvas->drawString(str, SkIntToScalar(x),
  32                              SkIntToScalar(y), textPaint);
  33         }
  34         canvas->restore();
  35 }
  36 DEF_SIMPLE_GM_BG(imageblur,       canvas, WIDTH, HEIGHT, SK_ColorBLACK) {
  37     imageblurgm_draw(24.0f, 0.0f, canvas);
  38 }
  39 DEF_SIMPLE_GM_BG(imageblur_large, canvas, WIDTH, HEIGHT, SK_ColorBLACK) {
  40     imageblurgm_draw(80.0f, 80.0f, canvas);
  41 }