xref: /third_party/skia/docs/examples/Bitmap_allocN32Pixels.cpp
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1cb93a386Sopenharmony_ci// Copyright 2019 Google LLC.
2cb93a386Sopenharmony_ci// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
3cb93a386Sopenharmony_ci#include "tools/fiddle/examples.h"
4cb93a386Sopenharmony_ci// HASH=c717491f9251604724c9cbde7088ec20
5cb93a386Sopenharmony_ciREG_FIDDLE(Bitmap_allocN32Pixels, 256, 256, false, 0) {
6cb93a386Sopenharmony_civoid draw(SkCanvas* canvas) {
7cb93a386Sopenharmony_ci    SkRandom random;
8cb93a386Sopenharmony_ci    SkBitmap bitmap;
9cb93a386Sopenharmony_ci    bitmap.allocN32Pixels(64, 64);
10cb93a386Sopenharmony_ci    bitmap.eraseColor(SK_ColorTRANSPARENT);
11cb93a386Sopenharmony_ci    for (int y = 0; y < 256; y += 64) {
12cb93a386Sopenharmony_ci        for (int x = 0; x < 256; x += 64) {
13cb93a386Sopenharmony_ci            SkColor color = random.nextU();
14cb93a386Sopenharmony_ci            uint32_t w = random.nextRangeU(4, 32);
15cb93a386Sopenharmony_ci            uint32_t cx = random.nextRangeU(0, 64 - w);
16cb93a386Sopenharmony_ci            uint32_t h = random.nextRangeU(4, 32);
17cb93a386Sopenharmony_ci            uint32_t cy = random.nextRangeU(0, 64 - h);
18cb93a386Sopenharmony_ci            bitmap.erase(color, SkIRect::MakeXYWH(cx, cy, w, h));
19cb93a386Sopenharmony_ci            canvas->drawImage(bitmap.asImage(), x, y);
20cb93a386Sopenharmony_ci        }
21cb93a386Sopenharmony_ci    }
22cb93a386Sopenharmony_ci}
23cb93a386Sopenharmony_ci}  // END FIDDLE
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Indexes created Thu Nov 07 10:32:03 CST 2024