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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 "SkGradientShader.h"
#include "SkPath.h"
#include "SkRegion.h"
#include "SkShader.h"
#include "SkUtils.h"
#include "Sk1DPathEffect.h"
#include "SkCornerPathEffect.h"
#include "SkPathMeasure.h"
#include "SkRandom.h"
#include "SkColorPriv.h"
#include "SkColorFilter.h"
#include "SkDither.h"
static void make_bm(SkBitmap* bm) {
const SkColor colors[] = {
SK_ColorRED, SK_ColorGREEN,
SK_ColorBLUE, SK_ColorWHITE
};
SkColorTable* ctable = new SkColorTable(colors, 4);
bm->setConfig(SkBitmap::kIndex8_Config, 2, 2);
bm->allocPixels(ctable);
ctable->unref();
*bm->getAddr8(0, 0) = 0;
*bm->getAddr8(1, 0) = 1;
*bm->getAddr8(0, 1) = 2;
*bm->getAddr8(1, 1) = 3;
}
static SkScalar draw_bm(SkCanvas* canvas, const SkBitmap& bm,
SkScalar x, SkScalar y, SkPaint* paint) {
#if 1
canvas->drawBitmap(bm, x, y, paint);
return SkIntToScalar(bm.width()) * 5/4;
#else
SkAutoCanvasRestore acr(canvas, true);
canvas->translate(x, y);
SkScalar w = SkIntToScalar(bm.width());
SkScalar h = SkIntToScalar(bm.height());
SkShader* s = SkShader::CreateBitmapShader(bm, SkShader::kRepeat_TileMode,
SkShader::kRepeat_TileMode);
paint->setShader(s)->unref();
canvas->drawRect(SkRect::MakeWH(w, h), *paint);
paint->setShader(NULL);
return w * 5/4;
#endif
}
static SkScalar draw_set(SkCanvas* c, const SkBitmap& bm, SkScalar x, SkPaint* p) {
x += draw_bm(c, bm, x, 0, p);
p->setFilterLevel(SkPaint::kLow_FilterLevel);
x += draw_bm(c, bm, x, 0, p);
p->setDither(true);
return x + draw_bm(c, bm, x, 0, p);
}
static const char* gConfigNames[] = {
"unknown config",
"A8",
"Index8",
"565",
"4444",
"8888"
};
static SkScalar draw_row(SkCanvas* canvas, const SkBitmap& bm) {
SkAutoCanvasRestore acr(canvas, true);
SkPaint paint;
SkScalar x = 0;
const int scale = 32;
paint.setAntiAlias(true);
const char* name = gConfigNames[bm.config()];
canvas->drawText(name, strlen(name), x, SkIntToScalar(bm.height())*scale*5/8,
paint);
canvas->translate(SkIntToScalar(48), 0);
canvas->scale(SkIntToScalar(scale), SkIntToScalar(scale));
x += draw_set(canvas, bm, 0, &paint);
paint.reset();
paint.setAlpha(0x80);
draw_set(canvas, bm, x, &paint);
return x * scale / 3;
}
class FilterView : public SampleView {
public:
SkBitmap fBM8, fBM4444, fBM16, fBM32;
FilterView() {
make_bm(&fBM8);
fBM8.copyTo(&fBM4444, SkBitmap::kARGB_4444_Config);
fBM8.copyTo(&fBM16, SkBitmap::kRGB_565_Config);
fBM8.copyTo(&fBM32, SkBitmap::kARGB_8888_Config);
this->setBGColor(0xFFDDDDDD);
}
protected:
// overrides from SkEventSink
virtual bool onQuery(SkEvent* evt) {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "Filter");
return true;
}
return this->INHERITED::onQuery(evt);
}
virtual void onDrawContent(SkCanvas* canvas) {
SkScalar x = SkIntToScalar(10);
SkScalar y = SkIntToScalar(10);
canvas->translate(x, y);
y = draw_row(canvas, fBM8);
canvas->translate(0, y);
y = draw_row(canvas, fBM4444);
canvas->translate(0, y);
y = draw_row(canvas, fBM16);
canvas->translate(0, y);
draw_row(canvas, fBM32);
}
private:
typedef SampleView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new FilterView; }
static SkViewRegister reg(MyFactory);
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