submodule/skia/docs/examples/Surface_draw.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=0de693f4d8dd898a60be8cfba23952be
   5 REG_FIDDLE(Surface_draw, 256, 64, false, 0) {
   6 void draw(SkCanvas* canvas) {
   7     sk_sp<SkSurface> big(SkSurface::MakeRasterN32Premul(64, 64));
   8     sk_sp<SkSurface> lil(big->makeSurface(SkImageInfo::MakeN32(32, 32, kPremul_SkAlphaType)));
   9     big->getCanvas()->clear(SK_ColorRED);
  10     lil->getCanvas()->clear(SK_ColorBLACK);
  11     lil->draw(big->getCanvas(), 16, 16);
  12     SkPixmap pixmap;
  13     if (big->peekPixels(&pixmap)) {
  14         SkBitmap bigBits;
  15         bigBits.installPixels(pixmap);
  16         canvas->drawImage(bigBits.asImage(), 0, 0);
  17     }
  18 }
  19 }  // END FIDDLE