Color_Type_Alpha_8.cpp 914 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=21ae21e4ce53d2018e042dd457997300
  5. REG_FIDDLE(Color_Type_Alpha_8, 256, 64, false, 0) {
  6. void draw(SkCanvas* canvas) {
  7. canvas->scale(16, 16);
  8. SkBitmap bitmap;
  9. SkImageInfo imageInfo = SkImageInfo::Make(2, 2, kAlpha_8_SkColorType, kOpaque_SkAlphaType);
  10. bitmap.allocPixels(imageInfo);
  11. SkCanvas offscreen(bitmap);
  12. offscreen.clear(SK_ColorGREEN);
  13. SkPaint orangePaint;
  14. orangePaint.setARGB(0xFF, 0xFF, 0xA5, 0x00);
  15. canvas->drawBitmap(bitmap, 0, 0, &orangePaint);
  16. uint8_t alpha8[] = { 0xFF, 0xBB, 0x77, 0x33 };
  17. SkPixmap alphaPixmap(imageInfo, &alpha8, imageInfo.minRowBytes());
  18. if (bitmap.writePixels(alphaPixmap, 0, 0)) {
  19. canvas->drawBitmap(bitmap, 2, 2, &orangePaint);
  20. }
  21. }
  22. } // END FIDDLE