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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm.h"
#include "SkBitmap.h"
#include "SkColorFilter.h"
class ColorFilterAlpha8 : public skiagm::GM {
public:
ColorFilterAlpha8() {}
protected:
SkString onShortName() override {
return SkString("colorfilteralpha8");
}
SkISize onISize() override {
return SkISize::Make(400, 400);
}
void onDraw(SkCanvas* canvas) override {
canvas->clear(SK_ColorRED);
SkBitmap bitmap;
SkImageInfo info = SkImageInfo::MakeA8(200, 200);
bitmap.allocPixels(info);
bitmap.eraseColor(0x88FFFFFF);
SkPaint paint;
float opaqueGrayMatrix[20] = {
0.0f, 0.0f, 0.0f, 1.0f, 0.0f,
0.0f, 0.0f, 0.0f, 1.0f, 0.0f,
0.0f, 0.0f, 0.0f, 1.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f, 255.0f
};
paint.setColorFilter(SkColorFilter::MakeMatrixFilterRowMajor255(opaqueGrayMatrix));
canvas->drawBitmap(bitmap, 100.0f, 100.0f, &paint);
}
private:
typedef skiagm::GM INHERITED;
};
DEF_GM( return new ColorFilterAlpha8; )
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