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=484d60dab5d846bf28c7a4d48892324a 5 REG_FIDDLE(Surface_readPixels_2, 256, 64, false, 0) { draw(SkCanvas * canvas)6 void draw(SkCanvas* canvas) { 7 sk_sp<SkSurface> surf(SkSurface::MakeRasterN32Premul(64, 64)); 8 auto surfCanvas = surf->getCanvas(); 9 surfCanvas->clear(SK_ColorRED); 10 SkPaint paint; 11 surfCanvas->drawOval({4, 8, 58, 54}, paint); 12 SkImageInfo info = SkImageInfo::Make(64, 64, kBGRA_8888_SkColorType, kPremul_SkAlphaType); 13 sk_sp<SkData> data(SkData::MakeUninitialized(info.minRowBytes() * info.height())); 14 sk_bzero(data->writable_data(), info.minRowBytes() * info.height()); 15 for (int x : { 32, -32 } ) { 16 for (int y : { 32, -32 } ) { 17 surf->readPixels(info, data->writable_data(), info.minRowBytes(), x, y); 18 } 19 } 20 sk_sp<SkImage> image = SkImage::MakeRasterData(info, data, info.minRowBytes()); 21 canvas->drawImage(image, 0, 0); 22 } 23 } // END FIDDLE 24