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- // 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,
- SK_ARRAY_COUNT(gradColors), SkTileMode::kClamp));
- SkBitmap bitmap;
- bitmap.allocPixels(srcInfo);
- SkCanvas srcCanvas(bitmap);
- srcCanvas.drawRect(SkRect::MakeWH(width, height), paint);
- canvas->drawBitmap(bitmap, 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->drawBitmap(bitmap, 0, 64);
- }
- } // END FIDDLE
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