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0b629d419f
Now that the compositor doesn't have any tricky deps, we can make it a top-level project, which saves a bunch of typing.
46 lines
1.4 KiB
C++
46 lines
1.4 KiB
C++
// Copyright 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "flow/checkerboard.h"
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#include "third_party/skia/include/core/SkShader.h"
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namespace flow {
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static SkShader* CreateCheckerboardShader(SkColor c1, SkColor c2, int size) {
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SkBitmap bm;
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bm.allocN32Pixels(2 * size, 2 * size);
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bm.eraseColor(c1);
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bm.eraseArea(SkIRect::MakeLTRB(0, 0, size, size), c2);
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bm.eraseArea(SkIRect::MakeLTRB(size, size, 2 * size, 2 * size), c2);
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return SkShader::CreateBitmapShader(bm, SkShader::kRepeat_TileMode,
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SkShader::kRepeat_TileMode);
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}
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static void DrawCheckerboard(SkCanvas* canvas,
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SkColor c1,
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SkColor c2,
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int size) {
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SkPaint paint;
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paint.setShader(CreateCheckerboardShader(c1, c2, size))->unref();
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canvas->drawPaint(paint);
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}
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void DrawCheckerboard(SkCanvas* canvas, const SkRect& rect) {
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// Draw a checkerboard
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canvas->save();
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canvas->clipRect(rect);
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DrawCheckerboard(canvas, 0x4400FF00, 0x00000000, 12);
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canvas->restore();
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// Stroke the drawn area
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SkPaint debugPaint;
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debugPaint.setStrokeWidth(3);
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debugPaint.setColor(SK_ColorRED);
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debugPaint.setStyle(SkPaint::kStroke_Style);
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canvas->drawRect(rect, debugPaint);
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}
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} // namespace flow
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