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/*
* Copyright 2013 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkColorFilterImageFilter.h"
#include "SkColorMatrixFilter.h"
#include "SkImage.h"
#include "SkImageSource.h"
#include "SkTileImageFilter.h"
#include "gm.h"
#include "sk_tool_utils.h"
#define WIDTH 400
#define HEIGHT 200
#define MARGIN 12
namespace skiagm {
class TileImageFilterGM : public GM {
public:
TileImageFilterGM() {
this->setBGColor(0xFF000000);
}
protected:
SkString onShortName() override {
return SkString("tileimagefilter");
}
SkISize onISize() override{
return SkISize::Make(WIDTH, HEIGHT);
}
void onOnceBeforeDraw() override {
fBitmap = SkImage::MakeFromBitmap(
sk_tool_utils::create_string_bitmap(50, 50, 0xD000D000, 10, 45, 50, "e"));
fCheckerboard = SkImage::MakeFromBitmap(
sk_tool_utils::create_checkerboard_bitmap(80, 80,
sk_tool_utils::color_to_565(0xFFA0A0A0),
sk_tool_utils::color_to_565(0xFF404040),
8));
}
void onDraw(SkCanvas* canvas) override {
canvas->clear(SK_ColorBLACK);
SkPaint red;
red.setColor(SK_ColorRED);
red.setStyle(SkPaint::kStroke_Style);
SkPaint blue;
blue.setColor(SK_ColorBLUE);
blue.setStyle(SkPaint::kStroke_Style);
int x = 0, y = 0;
for (size_t i = 0; i < 4; i++) {
sk_sp<SkImage> image = (i & 0x01) ? fCheckerboard : fBitmap;
SkRect srcRect = SkRect::MakeXYWH(SkIntToScalar(image->width()/4),
SkIntToScalar(image->height()/4),
SkIntToScalar(image->width()/(i+1)),
SkIntToScalar(image->height()/(i+1)));
SkRect dstRect = SkRect::MakeXYWH(SkIntToScalar(i * 8),
SkIntToScalar(i * 4),
SkIntToScalar(image->width() - i * 12),
SkIntToScalar(image->height()) - i * 12);
sk_sp<SkImageFilter> tileInput(SkImageSource::Make(image));
sk_sp<SkImageFilter> filter(SkTileImageFilter::Make(srcRect,
dstRect,
std::move(tileInput)));
canvas->save();
canvas->translate(SkIntToScalar(x), SkIntToScalar(y));
SkPaint paint;
paint.setImageFilter(std::move(filter));
canvas->drawImage(fBitmap.get(), 0, 0, &paint);
canvas->drawRect(srcRect, red);
canvas->drawRect(dstRect, blue);
canvas->restore();
x += image->width() + MARGIN;
if (x + image->width() > WIDTH) {
x = 0;
y += image->height() + MARGIN;
}
}
SkScalar matrix[20] = { SK_Scalar1, 0, 0, 0, 0,
0, SK_Scalar1, 0, 0, 0,
0, 0, SK_Scalar1, 0, 0,
0, 0, 0, SK_Scalar1, 0 };
SkRect srcRect = SkRect::MakeWH(SkIntToScalar(fBitmap->width()),
SkIntToScalar(fBitmap->height()));
SkRect dstRect = SkRect::MakeWH(SkIntToScalar(fBitmap->width() * 2),
SkIntToScalar(fBitmap->height() * 2));
sk_sp<SkImageFilter> tile(SkTileImageFilter::Make(srcRect, dstRect, nullptr));
sk_sp<SkColorFilter> cf(SkColorFilter::MakeMatrixFilterRowMajor255(matrix));
SkPaint paint;
paint.setImageFilter(SkColorFilterImageFilter::Make(std::move(cf), std::move(tile)));
canvas->save();
canvas->translate(SkIntToScalar(x), SkIntToScalar(y));
canvas->clipRect(dstRect);
canvas->saveLayer(&dstRect, &paint);
canvas->drawImage(fBitmap.get(), 0, 0);
canvas->restore();
canvas->drawRect(srcRect, red);
canvas->drawRect(dstRect, blue);
canvas->restore();
canvas->translate(0, SkIntToScalar(100));
srcRect = SkRect::MakeXYWH(0, 0, 50, 50);
dstRect = SkRect::MakeXYWH(0, 0, 100, 100);
SkImageFilter::CropRect cropRect(SkRect::MakeXYWH(5, 5, 40, 40));
sk_sp<SkColorFilter> greenCF = SkColorFilter::MakeModeFilter(SK_ColorGREEN,
SkBlendMode::kSrc);
sk_sp<SkImageFilter> green(SkColorFilterImageFilter::Make(std::move(greenCF),
nullptr,
&cropRect));
tile = SkTileImageFilter::Make(srcRect, dstRect, std::move(green));
paint.setColor(SK_ColorRED);
paint.setImageFilter(std::move(tile));
canvas->drawRect(dstRect, paint);
}
private:
sk_sp<SkImage> fBitmap, fCheckerboard;
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM(return new TileImageFilterGM;)
}
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