blob: 9e9eeed731b2bab595a686e70d035c874de4bd04 [file] [log] [blame]
// Copyright 2019 Google LLC.
// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
#include "tools/fiddle/examples.h"
// HASH=b2cbbbbcffb618865d8aae3bc04b2a62
REG_FIDDLE(Bitmap_readPixels, 256, 128, false, 0) {
void draw(SkCanvas* canvas) {
const int width = 256;
const int height = 64;
SkImageInfo srcInfo = SkImageInfo::MakeN32Premul(width, height);
SkColor gradColors[] = { 0xFFAA3300, 0x7F881122 };
SkPoint gradPoints[] = { { 0, 0 }, { 256, 0 } };
SkPaint paint;
paint.setShader(SkGradientShader::MakeLinear(gradPoints, gradColors, nullptr,
std::size(gradColors), SkTileMode::kClamp));
SkBitmap bitmap;
bitmap.allocPixels(srcInfo);
SkCanvas srcCanvas(bitmap);
srcCanvas.drawRect(SkRect::MakeWH(width, height), paint);
canvas->drawImage(bitmap.asImage(), 0, 0);
SkImageInfo dstInfo = srcInfo.makeColorType(kARGB_4444_SkColorType);
std::vector<int16_t> dstPixels;
dstPixels.resize(height * width);
bitmap.readPixels(dstInfo, &dstPixels.front(), width * 2, 0, 0);
SkPixmap dstPixmap(dstInfo, &dstPixels.front(), width * 2);
bitmap.installPixels(dstPixmap);
canvas->drawImage(bitmap.asImage(), 0, 64);
}
} // END FIDDLE