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/*
* Copyright 2014 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 "sk_tool_utils.h"
#include "SkColor.h"
#include "SkImageFilter.h"
static void draw(SkCanvas* canvas, const SkRect& rect, const SkBitmap& bitmap,
const SkMatrix& matrix, SkFilterQuality filter) {
SkPaint paint;
paint.setImageFilter(SkImageFilter::MakeMatrixFilter(matrix, filter, nullptr));
canvas->saveLayer(&rect, &paint);
canvas->drawBitmap(bitmap, 0, 0);
canvas->restore();
}
static void make_checkerboard(SkBitmap* bitmap) {
bitmap->allocN32Pixels(64, 64);
SkCanvas canvas(*bitmap);
SkPaint darkPaint;
darkPaint.setColor(sk_tool_utils::color_to_565(0xFF404040));
SkPaint lightPaint;
lightPaint.setColor(sk_tool_utils::color_to_565(0xFFA0A0A0));
for (int y = 0; y < 64; y += 32) {
for (int x = 0; x < 64; x += 32) {
canvas.save();
canvas.translate(SkIntToScalar(x), SkIntToScalar(y));
canvas.drawRect(SkRect::MakeXYWH(0, 0, 16, 16), darkPaint);
canvas.drawRect(SkRect::MakeXYWH(16, 0, 16, 16), lightPaint);
canvas.drawRect(SkRect::MakeXYWH(0, 16, 16, 16), lightPaint);
canvas.drawRect(SkRect::MakeXYWH(16, 16, 16, 16), darkPaint);
canvas.restore();
}
}
}
DEF_SIMPLE_GM_BG(matriximagefilter, canvas, 420, 100, SK_ColorBLACK) {
SkMatrix matrix;
SkScalar margin = SkIntToScalar(10);
matrix.setSkew(SkDoubleToScalar(0.5), SkDoubleToScalar(0.2));
SkBitmap checkerboard;
make_checkerboard(&checkerboard);
SkRect srcRect = SkRect::MakeWH(96, 96);
canvas->translate(margin, margin);
draw(canvas, srcRect, checkerboard, matrix, kNone_SkFilterQuality);
canvas->translate(srcRect.width() + margin, 0);
draw(canvas, srcRect, checkerboard, matrix, kLow_SkFilterQuality);
#if 0
// This may be causing Mac 10.6 to barf.
canvas->translate(srcRect.width() + margin, 0);
draw(canvas, srcRect, checkerboard, matrix, kMedium_SkFilterQuality);
canvas->translate(srcRect.width() + margin, 0);
draw(canvas, srcRect, checkerboard, matrix, kHigh_SkFilterQuality);
#endif
}
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