xref: /aosp_15_r20/external/skia/docs/examples/Pixmap_reset_2.cpp (revision c8dee2aa9b3f27cf6c858bd81872bdeb2c07ed17)
1*c8dee2aaSAndroid Build Coastguard Worker // Copyright 2019 Google LLC.
2*c8dee2aaSAndroid Build Coastguard Worker // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
3*c8dee2aaSAndroid Build Coastguard Worker #include "tools/fiddle/examples.h"
4*c8dee2aaSAndroid Build Coastguard Worker REG_FIDDLE(Pixmap_reset_2, 256, 64, false, 4) {
draw(SkCanvas * canvas)5*c8dee2aaSAndroid Build Coastguard Worker void draw(SkCanvas* canvas) {
6*c8dee2aaSAndroid Build Coastguard Worker     std::vector<int32_t> pixels;
7*c8dee2aaSAndroid Build Coastguard Worker     pixels.resize(image->height() * image->width() * 4);
8*c8dee2aaSAndroid Build Coastguard Worker     SkPixmap pixmap(SkImageInfo::Make(image->width(), image->height(), kN32_SkColorType,
9*c8dee2aaSAndroid Build Coastguard Worker             image->alphaType()), (const void*) &pixels.front(), image->width() * 4);
10*c8dee2aaSAndroid Build Coastguard Worker     image->readPixels(nullptr, pixmap, 0, 0);
11*c8dee2aaSAndroid Build Coastguard Worker     int x = 0;
12*c8dee2aaSAndroid Build Coastguard Worker     for (auto colorType : { kRGBA_8888_SkColorType, kBGRA_8888_SkColorType } ) {
13*c8dee2aaSAndroid Build Coastguard Worker         pixmap.reset(SkImageInfo::Make(image->width(), image->height(), colorType,
14*c8dee2aaSAndroid Build Coastguard Worker                 image->alphaType()), (const void*) &pixels.front(), image->width() * 4);
15*c8dee2aaSAndroid Build Coastguard Worker         SkBitmap bitmap;
16*c8dee2aaSAndroid Build Coastguard Worker         bitmap.installPixels(pixmap);
17*c8dee2aaSAndroid Build Coastguard Worker         canvas->drawImage(bitmap.asImage(), x, 0);
18*c8dee2aaSAndroid Build Coastguard Worker         x += 128;
19*c8dee2aaSAndroid Build Coastguard Worker     }
20*c8dee2aaSAndroid Build Coastguard Worker }
21*c8dee2aaSAndroid Build Coastguard Worker }  // END FIDDLE
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