75e9dfea85
git-svn-id: http://skia.googlecode.com/svn/trunk@10693 2bbb7eff-a529-9590-31e7-b0007b416f81
115 lines
3.0 KiB
C++
115 lines
3.0 KiB
C++
/*
|
|
* 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 "gm.h"
|
|
#include "SkCanvas.h"
|
|
#include "SkPaint.h"
|
|
#include "SkPath.h"
|
|
#include "SkRect.h"
|
|
|
|
namespace skiagm {
|
|
|
|
/*
|
|
* This GM exercises the flags to SkCanvas::save(). The canvas' save() and
|
|
* restore actions can be limited to only a portion of the canvas' state through
|
|
* the use of flags when calling save.
|
|
*/
|
|
class CanvasStateGM : public GM {
|
|
SkSize fSize;
|
|
enum {
|
|
WIDTH = 150,
|
|
HEIGHT = 150,
|
|
};
|
|
|
|
SkPaint fFillPaint;
|
|
SkPaint fStrokePaint;
|
|
|
|
SkPath fPath;
|
|
|
|
SkRect fOutlineRect;
|
|
SkRect fFillRect;
|
|
|
|
|
|
public:
|
|
CanvasStateGM() {
|
|
fSize.set(SkIntToScalar(WIDTH), SkIntToScalar(HEIGHT));
|
|
|
|
fFillPaint.setColor(SK_ColorRED);
|
|
fFillPaint.setStyle(SkPaint::kFill_Style);
|
|
|
|
fStrokePaint.setColor(SK_ColorBLUE);
|
|
fStrokePaint.setStyle(SkPaint::kStroke_Style);
|
|
fStrokePaint.setStrokeWidth(1);
|
|
|
|
fPath.moveTo(25, 25);
|
|
fPath.lineTo(125, 25);
|
|
fPath.lineTo(75, 125);
|
|
fPath.close();
|
|
|
|
fOutlineRect = SkRect::MakeXYWH(1, 1, WIDTH-2, HEIGHT-2);
|
|
fFillRect = SkRect::MakeXYWH(10, 10, WIDTH-20, HEIGHT-20);
|
|
}
|
|
|
|
protected:
|
|
virtual SkString onShortName() SK_OVERRIDE {
|
|
return SkString("canvas-state");
|
|
}
|
|
|
|
virtual SkISize onISize() SK_OVERRIDE {
|
|
return SkISize::Make(WIDTH*3, HEIGHT*4);
|
|
}
|
|
|
|
virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
|
|
|
|
SkCanvas::SaveFlags flags[] = { SkCanvas::kMatrix_SaveFlag,
|
|
SkCanvas::kClip_SaveFlag,
|
|
SkCanvas::kMatrixClip_SaveFlag };
|
|
|
|
// columns -- flags
|
|
// rows -- permutations of setting the clip and matrix
|
|
for (size_t i = 0; i < SK_ARRAY_COUNT(flags); ++i) {
|
|
for (int j = 0; j < 2; ++j) {
|
|
for (int k = 0; k < 2; ++k) {
|
|
this->drawTestPattern(i, (2*j)+k, canvas, flags[i],
|
|
SkToBool(j), SkToBool(k));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
virtual uint32_t onGetFlags() const SK_OVERRIDE { return kSkipPicture_Flag; }
|
|
|
|
private:
|
|
void drawTestPattern(int x, int y, SkCanvas* canvas,
|
|
SkCanvas::SaveFlags flags, bool doClip, bool doScale) {
|
|
canvas->save();
|
|
canvas->translate(SkIntToScalar(x*WIDTH), SkIntToScalar(y*HEIGHT));
|
|
|
|
canvas->drawRect(fOutlineRect, fStrokePaint);
|
|
canvas->save(flags);
|
|
if(doClip) {
|
|
canvas->clipPath(fPath);
|
|
}
|
|
if (doScale) {
|
|
canvas->scale(SkDoubleToScalar(0.5), SkDoubleToScalar(0.5));
|
|
}
|
|
canvas->restore();
|
|
canvas->drawRect(fFillRect, fFillPaint);
|
|
|
|
canvas->restore();
|
|
}
|
|
|
|
typedef GM INHERITED;
|
|
};
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
DEF_GM( return SkNEW(CanvasStateGM); )
|
|
|
|
} // end namespace
|