Bitmap_ComputeIsOpaque.cpp 845 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=9df1baa17658fbd0c419780f26fd854f
  5. REG_FIDDLE(Bitmap_ComputeIsOpaque, 256, 256, true, 0) {
  6. void draw(SkCanvas* canvas) {
  7. SkBitmap bitmap;
  8. bitmap.setInfo(SkImageInfo::Make(2, 2, kN32_SkColorType, kPremul_SkAlphaType));
  9. for (int index = 0; index < 2; ++index) {
  10. bitmap.allocPixels();
  11. bitmap.eraseColor(0x00000000);
  12. SkDebugf("computeIsOpaque: %s\n", SkBitmap::ComputeIsOpaque(bitmap) ? "true" : "false");
  13. bitmap.eraseColor(0xFFFFFFFF);
  14. SkDebugf("computeIsOpaque: %s\n", SkBitmap::ComputeIsOpaque(bitmap) ? "true" : "false");
  15. bitmap.setInfo(bitmap.info().makeAlphaType(kOpaque_SkAlphaType));
  16. }
  17. }
  18. } // END FIDDLE