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/*
* Copyright 2012 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 "SkBlurMaskFilter.h"
#include "SkCanvas.h"
#include "SkPath.h"
#define STROKE_WIDTH SkIntToScalar(10)
typedef void (*Proc)(SkCanvas*, const SkRect&, const SkPaint&);
static void fill_rect(SkCanvas* canvas, const SkRect& r, const SkPaint& p) {
canvas->drawRect(r, p);
}
static void stroke_rect(SkCanvas* canvas, const SkRect& r, const SkPaint& p) {
SkPaint paint(p);
paint.setStyle(SkPaint::kStroke_Style);
paint.setStrokeWidth(STROKE_WIDTH);
canvas->drawRect(r, paint);
}
static void draw_donut(SkCanvas* canvas, const SkRect& r, const SkPaint& p) {
SkRect rect;
SkPath path;
rect = r;
rect.outset(STROKE_WIDTH/2, STROKE_WIDTH/2);
path.addRect(rect);
rect = r;
rect.inset(STROKE_WIDTH/2, STROKE_WIDTH/2);
path.addRect(rect);
path.setFillType(SkPath::kEvenOdd_FillType);
canvas->drawPath(path, p);
}
static void draw_donut_skewed(SkCanvas* canvas, const SkRect& r, const SkPaint& p) {
SkRect rect;
SkPath path;
rect = r;
rect.outset(STROKE_WIDTH/2, STROKE_WIDTH/2);
path.addRect(rect);
rect = r;
rect.inset(STROKE_WIDTH/2, STROKE_WIDTH/2);
rect.offset(7, -7);
path.addRect(rect);
path.setFillType(SkPath::kEvenOdd_FillType);
canvas->drawPath(path, p);
}
#include "SkGradientShader.h"
typedef void (*PaintProc)(SkPaint*, SkScalar width);
static void setgrad(SkPaint* paint, SkScalar width) {
SkPoint pts[] = { { 0, 0 }, { width, 0 } };
SkColor colors[] = { SK_ColorRED, SK_ColorGREEN };
SkShader* s = SkGradientShader::CreateLinear(pts, colors, NULL, 2,
SkShader::kClamp_TileMode);
paint->setShader(s)->unref();
}
static const char* gBlurStyle2Name[] = {
"normal",
"solid",
"outer",
"inner"
};
class BlurRectGM : public skiagm::GM {
SkAutoTUnref<SkMaskFilter> fMaskFilter;
SkString fName;
PaintProc fPProc;
SkAlpha fAlpha;
public:
BlurRectGM(const char name[], PaintProc pproc, U8CPU alpha,
SkBlurMaskFilter::BlurStyle bs) :
fMaskFilter(SkBlurMaskFilter::Create(STROKE_WIDTH/2, bs,
SkBlurMaskFilter::kHighQuality_BlurFlag))
, fName(name)
, fPProc(pproc)
, fAlpha(SkToU8(alpha))
{
fName.appendf("_%s", gBlurStyle2Name[bs]);
}
protected:
virtual SkString onShortName() {
return fName;
}
virtual SkISize onISize() {
return SkISize::Make(640, 480);
}
virtual void onDraw(SkCanvas* canvas) {
canvas->translate(STROKE_WIDTH*3/2, STROKE_WIDTH*3/2);
SkRect r = { 0, 0, 250, 120 };
SkPaint paint;
paint.setMaskFilter(fMaskFilter);
if (fPProc) {
fPProc(&paint, r.width());
}
paint.setAlpha(fAlpha);
static const Proc procs[] = {
fill_rect, draw_donut, draw_donut_skewed
};
this->drawProcs(canvas, r, paint, false, procs, SK_ARRAY_COUNT(procs));
canvas->translate(r.width() * 4/3, 0);
this->drawProcs(canvas, r, paint, true, procs, SK_ARRAY_COUNT(procs));
}
virtual uint32_t onGetFlags() const { return kSkipPipe_Flag; }
private:
void drawProcs(SkCanvas* canvas, const SkRect& r, const SkPaint& paint,
bool doClip, const Proc procs[], size_t procsCount) {
SkAutoCanvasRestore acr(canvas, true);
for (size_t i = 0; i < procsCount; ++i) {
if (doClip) {
SkRect clipRect(r);
clipRect.inset(STROKE_WIDTH/2, STROKE_WIDTH/2);
canvas->save();
canvas->clipRect(r);
}
procs[i](canvas, r, paint);
if (doClip) {
canvas->restore();
}
canvas->translate(0, r.height() * 4/3);
}
}
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM(return new BlurRectGM("blurrect", NULL, 0xFF, SkBlurMaskFilter::kNormal_BlurStyle);)
DEF_GM(return new BlurRectGM("blurrect", NULL, 0xFF, SkBlurMaskFilter::kSolid_BlurStyle);)
DEF_GM(return new BlurRectGM("blurrect", NULL, 0xFF, SkBlurMaskFilter::kOuter_BlurStyle);)
DEF_GM(return new BlurRectGM("blurrect", NULL, 0xFF, SkBlurMaskFilter::kInner_BlurStyle);)
DEF_GM(return new BlurRectGM("blurrect_grad_80", setgrad, 0x80, SkBlurMaskFilter::kNormal_BlurStyle);)
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