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/*
* 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 "SampleCode.h"
#include "SkCanvas.h"
#include "SkPaint.h"
#include "SkGpuDevice.h"
static void make_bitmap(SkBitmap* bitmap, GrContext* ctx, SkIRect* center) {
SkDevice* dev;
SkCanvas canvas;
const int kFixed = 28;
const int kStretchy = 8;
const int kSize = 2*kFixed + kStretchy;
if (ctx) {
dev = new SkGpuDevice(ctx, SkBitmap::kARGB_8888_Config, kSize, kSize);
*bitmap = dev->accessBitmap(false);
} else {
bitmap->setConfig(SkBitmap::kARGB_8888_Config, kSize, kSize);
bitmap->allocPixels();
dev = new SkDevice(*bitmap);
}
canvas.setDevice(dev)->unref();
canvas.clear(0);
SkRect r = SkRect::MakeWH(SkIntToScalar(kSize), SkIntToScalar(kSize));
const SkScalar strokeWidth = SkIntToScalar(6);
const SkScalar radius = SkIntToScalar(kFixed) - strokeWidth/2;
center->setXYWH(kFixed, kFixed, kStretchy, kStretchy);
SkPaint paint;
paint.setAntiAlias(true);
paint.setColor(0xFFFF0000);
canvas.drawRoundRect(r, radius, radius, paint);
r.setXYWH(SkIntToScalar(kFixed), 0, SkIntToScalar(kStretchy), SkIntToScalar(kSize));
paint.setColor(0x8800FF00);
canvas.drawRect(r, paint);
r.setXYWH(0, SkIntToScalar(kFixed), SkIntToScalar(kSize), SkIntToScalar(kStretchy));
paint.setColor(0x880000FF);
canvas.drawRect(r, paint);
}
class NinePatchView : public SampleView {
public:
NinePatchView() {}
protected:
// overrides from SkEventSink
virtual bool onQuery(SkEvent* evt) {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "NinePatch");
return true;
}
return this->INHERITED::onQuery(evt);
}
virtual void onDrawContent(SkCanvas* canvas) {
SkBitmap bm;
SkIRect center;
make_bitmap(&bm, SampleCode::GetGr(), ¢er);
// amount of bm that should not be stretched (unless we have to)
const SkScalar fixed = SkIntToScalar(bm.width() - center.width());
const SkTSize<SkScalar> size[] = {
{ fixed * 4 / 5, fixed * 4 / 5 }, // shrink in both axes
{ fixed * 4 / 5, fixed * 4 }, // shrink in X
{ fixed * 4, fixed * 4 / 5 }, // shrink in Y
{ fixed * 4, fixed * 4 }
};
canvas->drawBitmap(bm, SkIntToScalar(10), SkIntToScalar(10), NULL);
SkScalar x = SkIntToScalar(100);
SkScalar y = SkIntToScalar(100);
SkPaint paint;
paint.setFilterBitmap(true);
for (int iy = 0; iy < 2; ++iy) {
for (int ix = 0; ix < 2; ++ix) {
int i = ix * 2 + iy;
SkRect r = SkRect::MakeXYWH(x + ix * fixed, y + iy * fixed,
size[i].width(), size[i].height());
canvas->drawBitmapNine(bm, center, r, &paint);
}
}
}
private:
SkScalar fX, fY;
typedef SampleView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new NinePatchView; }
static SkViewRegister reg(MyFactory);
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