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=be9574c4a14f891e1abb4ec2b1e51d6c 5 REG_FIDDLE(Surface_notifyContentWillChange, 256, 256, true, 0) { draw(SkCanvas * canvas)6void draw(SkCanvas* canvas) { 7 auto surface = SkSurface::MakeRasterN32Premul(1, 1); 8 for (int i = 0; i < 3; ++i) { 9 SkDebugf("surface generationID: %d\n", surface->generationID()); 10 if (0 == i) { 11 surface->getCanvas()->drawColor(SK_ColorBLACK); 12 } else { 13 surface->notifyContentWillChange(SkSurface::kDiscard_ContentChangeMode); 14 } 15 } 16 } 17 } // END FIDDLE 18