xref: /third_party/skia/docs/examples/Surface_readPixels_3.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=2d991a231e49d1de13eeb2ba9b440e01
5cb93a386Sopenharmony_ciREG_FIDDLE(Surface_readPixels_3, 256, 256, false, 0) {
6cb93a386Sopenharmony_civoid draw(SkCanvas* canvas) {
7cb93a386Sopenharmony_ci    sk_sp<SkSurface> surf(SkSurface::MakeRasterN32Premul(64, 64));
8cb93a386Sopenharmony_ci    auto surfCanvas = surf->getCanvas();
9cb93a386Sopenharmony_ci    surfCanvas->clear(SK_ColorGREEN);
10cb93a386Sopenharmony_ci    SkPaint paint;
11cb93a386Sopenharmony_ci    surfCanvas->drawOval({2, 10, 58, 54}, paint);
12cb93a386Sopenharmony_ci    SkImageInfo info = SkImageInfo::Make(64, 64, kBGRA_8888_SkColorType, kPremul_SkAlphaType);
13cb93a386Sopenharmony_ci    SkBitmap bitmap;
14cb93a386Sopenharmony_ci    bitmap.setInfo(info);
15cb93a386Sopenharmony_ci    bitmap.allocPixels();
16cb93a386Sopenharmony_ci    for (int x : { 32, -32 } ) {
17cb93a386Sopenharmony_ci        for (int y : { 32, -32 } ) {
18cb93a386Sopenharmony_ci            surf->readPixels(bitmap, x, y);
19cb93a386Sopenharmony_ci        }
20cb93a386Sopenharmony_ci    }
21cb93a386Sopenharmony_ci    canvas->drawImage(bitmap.asImage(), 0, 0);
22cb93a386Sopenharmony_ci}
23cb93a386Sopenharmony_ci}  // END FIDDLE
24

Indexes created Thu Nov 07 10:32:03 CST 2024