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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 "SkView.h"
#include "SkCanvas.h"
#include "SkDevice.h"
#include "SkPaint.h"
#include "SkShader.h"
static SkBitmap createBitmap(int n) {
SkBitmap bitmap;
bitmap.allocN32Pixels(n, n);
bitmap.eraseColor(SK_ColorTRANSPARENT);
SkCanvas canvas(bitmap);
SkRect r;
r.set(0, 0, SkIntToScalar(n), SkIntToScalar(n));
SkPaint paint;
paint.setAntiAlias(true);
paint.setColor(SK_ColorRED);
canvas.drawOval(r, paint);
paint.setColor(SK_ColorBLUE);
paint.setStrokeWidth(SkIntToScalar(n)/15);
paint.setStyle(SkPaint::kStroke_Style);
canvas.drawLine(0, 0, r.fRight, r.fBottom, paint);
canvas.drawLine(0, r.fBottom, r.fRight, 0, paint);
return bitmap;
}
class MipMapView : public SampleView {
SkBitmap fBitmap;
enum {
N = 64
};
bool fOnce;
public:
MipMapView() {
fOnce = false;
}
void init() {
if (fOnce) {
return;
}
fOnce = true;
fBitmap = createBitmap(N);
fWidth = N;
}
protected:
// overrides from SkEventSink
virtual bool onQuery(SkEvent* evt) {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "MipMaps");
return true;
}
return this->INHERITED::onQuery(evt);
}
virtual void onDrawContent(SkCanvas* canvas) {
this->init();
static const SkPaint::FilterLevel gLevel[] = {
SkPaint::kNone_FilterLevel,
SkPaint::kLow_FilterLevel,
SkPaint::kMedium_FilterLevel,
SkPaint::kHigh_FilterLevel,
};
SkPaint paint;
for (size_t i = 0; i < SK_ARRAY_COUNT(gLevel); ++i) {
SkScalar x = 10.0f + i * 100;
SkScalar y = 10.0f;
paint.setFilterLevel(gLevel[i]);
canvas->drawBitmap(fBitmap, x, y, &paint);
}
this->inval(NULL);
}
private:
int fWidth;
typedef SampleView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new MipMapView; }
static SkViewRegister reg(MyFactory);
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