Bitmap_peekPixels.cpp 922 B

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  1. // Copyright 2019 Google LLC.
  2. // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
  3. #include "tools/fiddle/examples.h"
  4. // HASH=0cc2c6a0dffa61a88711534bd3d43b40
  5. REG_FIDDLE(Bitmap_peekPixels, 256, 256, true, 0) {
  6. void draw(SkCanvas* canvas) {
  7. SkBitmap bitmap;
  8. bitmap.allocPixels(SkImageInfo::MakeN32Premul(6, 11));
  9. SkCanvas offscreen(bitmap);
  10. offscreen.clear(SK_ColorWHITE);
  11. SkPaint paint;
  12. SkFont font;
  13. offscreen.drawString("?", 0, 10, font, paint);
  14. SkPixmap pixmap;
  15. if (bitmap.peekPixels(&pixmap)) {
  16. const SkPMColor* pixels = pixmap.addr32();
  17. SkPMColor pmWhite = pixels[0];
  18. for (int y = 0; y < bitmap.height(); ++y) {
  19. for (int x = 0; x < bitmap.width(); ++x) {
  20. SkDebugf("%c", *pixels++ == pmWhite ? '-' : 'x');
  21. }
  22. SkDebugf("\n");
  23. }
  24. }
  25. }
  26. } // END FIDDLE