xref: /aosp_15_r20/external/skia/docs/examples/Surface_draw.cpp (revision c8dee2aa9b3f27cf6c858bd81872bdeb2c07ed17)
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 REG_FIDDLE(Surface_draw, 256, 64, false, 0) {
draw(SkCanvas * canvas)5 void draw(SkCanvas* canvas) {
6     sk_sp<SkSurface> big(SkSurfaces::Raster(SkImageInfo::MakeN32Premul(64, 64)));
7     sk_sp<SkSurface> lil(big->makeSurface(SkImageInfo::MakeN32(32, 32, kPremul_SkAlphaType)));
8     big->getCanvas()->clear(SK_ColorRED);
9     lil->getCanvas()->clear(SK_ColorBLACK);
10     lil->draw(big->getCanvas(), 16, 16);
11     SkPixmap pixmap;
12     if (big->peekPixels(&pixmap)) {
13         SkBitmap bigBits;
14         bigBits.installPixels(pixmap);
15         canvas->drawImage(bigBits.asImage(), 0, 0);
16     }
17 }
18 }  // END FIDDLE
19