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/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkBlurImageFilter.h"
#include "SkColor.h"
#include "SkDropShadowImageFilter.h"
#include "SkOffsetImageFilter.h"
#include "SkScalar.h"
#include "gm.h"
#define RESIZE_FACTOR_X SkIntToScalar(2)
#define RESIZE_FACTOR_Y SkIntToScalar(5)
namespace skiagm {
class ImageFiltersStrokedGM : public GM {
public:
ImageFiltersStrokedGM() {
this->setBGColor(0x00000000);
}
protected:
SkString onShortName() override {
return SkString("imagefiltersstroked");
}
SkISize onISize() override {
return SkISize::Make(860, 500);
}
static void draw_circle(SkCanvas* canvas, const SkRect& r, const SkPaint& paint) {
canvas->drawCircle(r.centerX(), r.centerY(),
r.width() * 2 / 5, paint);
}
static void draw_line(SkCanvas* canvas, const SkRect& r, const SkPaint& paint) {
canvas->drawLine(r.fLeft, r.fBottom, r.fRight, r.fTop, paint);
}
static void draw_rect(SkCanvas* canvas, const SkRect& r, const SkPaint& paint) {
canvas->drawRect(r, paint);
}
void onDraw(SkCanvas* canvas) override {
void (*drawProc[])(SkCanvas*, const SkRect&, const SkPaint&) = {
draw_line, draw_rect, draw_circle,
};
canvas->clear(SK_ColorBLACK);
SkMatrix resizeMatrix;
resizeMatrix.setScale(RESIZE_FACTOR_X, RESIZE_FACTOR_Y);
sk_sp<SkImageFilter> filters[] = {
SkBlurImageFilter::Make(5, 5, nullptr),
SkDropShadowImageFilter::Make(10, 10, 3, 3, SK_ColorGREEN,
SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode,
nullptr),
SkOffsetImageFilter::Make(-16, 32, nullptr),
SkImageFilter::MakeMatrixFilter(resizeMatrix, kNone_SkFilterQuality, nullptr),
};
SkRect r = SkRect::MakeWH(64, 64);
SkScalar margin = 32;
SkPaint paint;
paint.setColor(SK_ColorWHITE);
paint.setAntiAlias(true);
paint.setStrokeWidth(10);
paint.setStyle(SkPaint::kStroke_Style);
paint.setTextSize(48);
paint.setTextAlign(SkPaint::kCenter_Align);
for (size_t i = 0; i < SK_ARRAY_COUNT(drawProc); ++i) {
canvas->translate(0, margin);
canvas->save();
for (size_t j = 0; j < SK_ARRAY_COUNT(filters); ++j) {
canvas->translate(margin, 0);
canvas->save();
if (2 == j) {
canvas->translate(16, -32);
} else if (3 == j) {
canvas->scale(SkScalarInvert(RESIZE_FACTOR_X),
SkScalarInvert(RESIZE_FACTOR_Y));
}
paint.setImageFilter(filters[j]);
drawProc[i](canvas, r, paint);
canvas->restore();
canvas->translate(r.width() + margin, 0);
}
canvas->restore();
canvas->translate(0, r.height());
}
}
private:
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM(return new ImageFiltersStrokedGM;)
}
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