submodule/skia/docs/examples/Image_MakeFromRaster.cpp

   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=275356b65d18c8868f4434137350cddc
   5 REG_FIDDLE(Image_MakeFromRaster, 256, 256, true, 0) {
   6 static void releaseProc(const void* pixels, SkImage::ReleaseContext context) {
   7      int* countPtr = static_cast<int*>(context);
   8      *countPtr += 1;
   9 }
  10
  11 void draw(SkCanvas* canvas) {
  12     SkColor color = 0;
  13     SkPixmap pixmap(SkImageInfo::MakeN32(1, 1, kPremul_SkAlphaType), &color, 4);
  14     int releaseCount = 0;
  15     sk_sp<SkImage> image(SkImage::MakeFromRaster(pixmap, releaseProc, &releaseCount));
  16     SkDebugf("before reset: %d\n", releaseCount);
  17     image.reset();
  18     SkDebugf("after reset: %d\n", releaseCount);
  19 }
  20 }  // END FIDDLE