xref: /aosp_15_r20/external/skia/docs/examples/Surface_MakeRasterDirect.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_MakeRasterDirect, 256, 256, true, 0) {
draw(SkCanvas *)5 void draw(SkCanvas*) {
6     SkImageInfo info = SkImageInfo::MakeN32Premul(3, 3);
7     const size_t size = info.computeMinByteSize();
8     SkPMColor* pixels = new SkPMColor[size];
9     sk_sp<SkSurface> surface(SkSurfaces::WrapPixels(info, pixels, info.minRowBytes()));
10     SkCanvas* canvas = surface->getCanvas();
11     canvas->clear(SK_ColorWHITE);
12     SkPMColor pmWhite = pixels[0];
13     SkPaint paint;
14     canvas->drawPoint(1, 1, paint);
15     for (int y = 0; y < info.height(); ++y) {
16         for (int x = 0; x < info.width(); ++x) {
17             SkDebugf("%c", *pixels++ == pmWhite ? '-' : 'x');
18         }
19         SkDebugf("\n");
20     }
21     delete[] pixels;
22 }
23 }  // END FIDDLE
24