a8c183125f
BUG=skia: R=reed@google.com Author: reed@chromium.org Review URL: https://codereview.chromium.org/169063002 git-svn-id: http://skia.googlecode.com/svn/trunk@13473 2bbb7eff-a529-9590-31e7-b0007b416f81
102 lines
2.3 KiB
C++
102 lines
2.3 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 "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);
|