gm/imageresizetiled.cpp

   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 "sk_tool_utils.h"
  10 #include "SkImageFilter.h"
  11 #include "SkRandom.h"
  12
  13 #define WIDTH 640
  14 #define HEIGHT 480
  15
  16 #define RESIZE_FACTOR SkIntToScalar(2)
  17
  18 DEF_SIMPLE_GM(imageresizetiled, canvas, WIDTH, HEIGHT) {
  19         SkPaint paint;
  20         SkMatrix matrix;
  21         matrix.setScale(RESIZE_FACTOR, RESIZE_FACTOR);
  22         paint.setImageFilter(SkImageFilter::MakeMatrixFilter(matrix,
  23                                                              kNone_SkFilterQuality,
  24                                                              nullptr));
  25         const SkScalar tile_size = SkIntToScalar(100);
  26         for (SkScalar y = 0; y < HEIGHT; y += tile_size) {
  27             for (SkScalar x = 0; x < WIDTH; x += tile_size) {
  28                 canvas->save();
  29                 canvas->clipRect(SkRect::MakeXYWH(x, y, tile_size, tile_size));
  30                 canvas->scale(SkScalarInvert(RESIZE_FACTOR),
  31                               SkScalarInvert(RESIZE_FACTOR));
  32                 canvas->saveLayer(nullptr, &paint);
  33                 const char* str[] = {
  34                     "The quick",
  35                     "brown fox",
  36                     "jumped over",
  37                     "the lazy dog.",
  38                 };
  39                 SkPaint textPaint;
  40                 textPaint.setAntiAlias(true);
  41                 sk_tool_utils::set_portable_typeface(&textPaint);
  42                 textPaint.setTextSize(SkIntToScalar(100));
  43                 int posY = 0;
  44                 for (unsigned i = 0; i < SK_ARRAY_COUNT(str); i++) {
  45                     posY += 100;
  46                     canvas->drawString(str[i], SkIntToScalar(0),
  47                                      SkIntToScalar(posY), textPaint);
  48                 }
  49                 canvas->restore();
  50                 canvas->restore();
  51             }
  52         }
  53 }