ecdd979bc0
Bug: skia:11216 Change-Id: I4affb8e00ff7e7b3e8d873ddfd653f397ca8d928 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/360979 Reviewed-by: Mike Reed <reed@google.com> Commit-Queue: Mike Reed <reed@google.com>
31 lines
1.7 KiB
C++
31 lines
1.7 KiB
C++
// Copyright 2019 Google LLC.
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// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
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#include "tools/fiddle/examples.h"
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// HASH=818e4e1191e39d2a642902cbf253b399
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REG_FIDDLE(ImageInfo_computeOffset, 256, 128, false, 0) {
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void draw(SkCanvas* canvas) {
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uint8_t pixels[][12] = { { 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x00, 0x00, 0x00},
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{ 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00},
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{ 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00},
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{ 0xFF, 0xFF, 0x00, 0xFF, 0xFF, 0x00, 0xFF, 0xFF},
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{ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
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{ 0x00, 0x00, 0xFF, 0x00, 0x00, 0xFF, 0x00, 0x00},
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{ 0x00, 0xFF, 0x00, 0x00, 0x00, 0x00, 0xFF, 0x00},
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{ 0x00, 0x00, 0xFF, 0x00, 0x00, 0xFF, 0x00, 0x00} };
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SkImageInfo imageInfo = SkImageInfo::MakeA8(8, 8);
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SkBitmap bitmap;
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bitmap.installPixels(imageInfo, (void*) pixels, sizeof(pixels[0]));
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SkPaint paint;
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paint.setColor(SK_ColorRED);
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canvas->drawImageRect(bitmap.asImage(), SkRect::MakeWH(8, 8), SkRect::MakeWH(32, 32),
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SkSamplingOptions(), &paint, SkCanvas::kStrict_SrcRectConstraint);
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size_t offset = imageInfo.computeOffset(2, 3, sizeof(pixels[0]));
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pixels[0][offset] = 0x7F;
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offset = imageInfo.computeOffset(5, 3, sizeof(pixels[0]));
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pixels[0][offset] = 0x7F;
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bitmap.installPixels(imageInfo, (void*) pixels, sizeof(pixels[0]));
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canvas->drawImageRect(bitmap.asImage(), SkRect::MakeWH(8, 8), SkRect::MakeWH(128, 128),
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SkSamplingOptions(), &paint, SkCanvas::kStrict_SrcRectConstraint);
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}
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} // END FIDDLE
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