Pixmap_info.cpp 1.2 KB

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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=6e0f558bf7fabc655041116288559134
  5. REG_FIDDLE(Pixmap_info, 256, 256, true, 3) {
  6. void draw(SkCanvas* canvas) {
  7. std::vector<int32_t> pixels;
  8. pixels.resize(image->height() * image->width() * 4);
  9. SkPixmap pixmap(SkImageInfo::Make(image->width(), image->height(), kN32_SkColorType,
  10. image->alphaType()), (const void*) &pixels.front(), image->width() * 4);
  11. image->readPixels(pixmap, 0, 0);
  12. SkPixmap inset;
  13. if (pixmap.extractSubset(&inset, {128, 128, 512, 512})) {
  14. const SkImageInfo& info = inset.info();
  15. const char* alphas[] = {"Unknown", "Opaque", "Premul", "Unpremul"};
  16. const char* colors[] = {"Unknown", "Alpha_8", "RGB_565", "ARGB_4444", "RGBA_8888",
  17. "RGB_888x", "BGRA_8888", "RGBA_1010102", "RGB_101010x", "Gray_8", "RGBA_F16Norm",
  18. "RGBA_F16"};
  19. SkDebugf("width: %d height: %d color: %s alpha: %s\n", info.width(), info.height(),
  20. colors[info.colorType()], alphas[info.alphaType()]);
  21. }
  22. }
  23. } // END FIDDLE