Surface_MakeNull.cpp 748 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=99a54b814ccab7d2b1143c88581649ff
  5. REG_FIDDLE(Surface_MakeNull, 256, 256, true, 0) {
  6. void draw(SkCanvas* canvas) {
  7. SkDebugf("SkSurface::MakeNull(0, 0) %c= nullptr\n", SkSurface::MakeNull(0, 0) == nullptr ?
  8. '=' : '!');
  9. const int w = 37;
  10. const int h = 1000;
  11. auto surf = SkSurface::MakeNull(w, h);
  12. auto nullCanvas = surf->getCanvas();
  13. nullCanvas->drawPaint(SkPaint()); // does not crash, nothing draws
  14. SkDebugf("surf->makeImageSnapshot() %c= nullptr\n", surf->makeImageSnapshot() == nullptr ?
  15. '=' : '!');
  16. }
  17. } // END FIDDLE