moz-skia/gm/testimagefilters.cpp

118 строки
3.6 KiB
C++

/*
* Copyright 2011 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 "SkCanvas.h"
#include "SkColorFilter.h"
#include "SkColorPriv.h"
#include "SkShader.h"
#include "SkTestImageFilters.h"
#define FILTER_WIDTH SkIntToScalar(150)
#define FILTER_HEIGHT SkIntToScalar(200)
static SkImageFilter* make0() { return new SkDownSampleImageFilter(SK_Scalar1 / 5); }
static SkImageFilter* make1() { return new SkOffsetImageFilter(SkIntToScalar(16), SkIntToScalar(16)); }
static SkImageFilter* make2() {
SkColorFilter* cf = SkColorFilter::CreateModeFilter(SK_ColorBLUE,
SkXfermode::kSrcIn_Mode);
SkAutoUnref aur(cf);
return new SkColorFilterImageFilter(cf);
}
static SkImageFilter* make3() {
SkImageFilter* outer = new SkOffsetImageFilter(SkIntToScalar(16), SkIntToScalar(16));
SkImageFilter* inner = new SkDownSampleImageFilter(SK_Scalar1 / 5);
SkAutoUnref aur0(outer);
SkAutoUnref aur1(inner);
return new SkComposeImageFilter(outer, inner);
}
static SkImageFilter* make4() {
SkImageFilter* first = new SkOffsetImageFilter(SkIntToScalar(16), SkIntToScalar(16));
SkImageFilter* second = new SkDownSampleImageFilter(SK_Scalar1 / 5);
SkAutoUnref aur0(first);
SkAutoUnref aur1(second);
return new SkMergeImageFilter(first, second);
}
static SkImageFilter* make5() {
SkImageFilter* outer = new SkOffsetImageFilter(SkIntToScalar(16), SkIntToScalar(16));
SkImageFilter* inner = new SkDownSampleImageFilter(SK_Scalar1 / 5);
SkAutoUnref aur0(outer);
SkAutoUnref aur1(inner);
SkImageFilter* compose = new SkComposeImageFilter(outer, inner);
SkAutoUnref aur2(compose);
SkColorFilter* cf = SkColorFilter::CreateModeFilter(0x880000FF,
SkXfermode::kSrcIn_Mode);
SkAutoUnref aur3(cf);
SkImageFilter* blue = new SkColorFilterImageFilter(cf);
SkAutoUnref aur4(blue);
return new SkMergeImageFilter(compose, blue);
}
static void draw0(SkCanvas* canvas) {
SkPaint p;
p.setAntiAlias(true);
SkRect r = SkRect::MakeWH(FILTER_WIDTH, FILTER_HEIGHT);
r.inset(SK_Scalar1, SK_Scalar1);
p.setColor(SK_ColorRED);
canvas->drawOval(r, p);
}
class TestImageFiltersGM : public skiagm::GM {
public:
TestImageFiltersGM () {}
protected:
virtual SkString onShortName() {
return SkString("testimagefilters");
}
virtual SkISize onISize() { return SkISize::Make(640, 480); }
virtual void onDraw(SkCanvas* canvas) {
static SkImageFilter* (*gFilterProc[])() = {
make0, make1, make2, make3, make4, make5
};
const SkRect bounds = SkRect::MakeWH(FILTER_WIDTH, FILTER_HEIGHT);
const SkScalar dx = bounds.width() * 8 / 7;
const SkScalar dy = bounds.height() * 8 / 7;
for (size_t i = 0; i < SK_ARRAY_COUNT(gFilterProc); ++i) {
int ix = i % 3;
int iy = i / 3;
SkPaint paint;
paint.setImageFilter(gFilterProc[i]())->unref();
SkAutoCanvasRestore acr(canvas, true);
canvas->translate(ix * dx, iy * dy);
SkPaint p;
p.setColor(0xFFCCCCCC);
canvas->drawRect(bounds, p);
canvas->saveLayer(&bounds, &paint);
draw0(canvas);
}
}
private:
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static skiagm::GM* MyFactory(void*) { return new TestImageFiltersGM; }
static skiagm::GMRegistry reg(MyFactory);