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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 "SkGraphics.h"
#include "SkImageDecoder.h"
#include "SkPath.h"
#include "SkRegion.h"
#include "SkShader.h"
#include "SkUtils.h"
#include "SkXfermode.h"
#include "SkColorPriv.h"
#include "SkColorFilter.h"
#include "SkTime.h"
static const char* gNames[] = {
"/skimages/background_01.png"
};
class Filter2View : public SampleView {
public:
SkBitmap* fBitmaps;
int fBitmapCount;
int fCurrIndex;
Filter2View() {
fBitmapCount = SK_ARRAY_COUNT(gNames)*2;
fBitmaps = new SkBitmap[fBitmapCount];
for (int i = 0; i < fBitmapCount/2; i++) {
SkImageDecoder::DecodeFile(gNames[i], &fBitmaps[i],
SkBitmap::kARGB_8888_Config,
SkImageDecoder::kDecodePixels_Mode, NULL);
}
for (int i = fBitmapCount/2; i < fBitmapCount; i++) {
SkImageDecoder::DecodeFile(gNames[i-fBitmapCount/2], &fBitmaps[i],
SkBitmap::kRGB_565_Config,
SkImageDecoder::kDecodePixels_Mode, NULL);
}
fCurrIndex = 0;
this->setBGColor(SK_ColorGRAY);
}
virtual ~Filter2View() {
delete[] fBitmaps;
}
protected:
// overrides from SkEventSink
virtual bool onQuery(SkEvent* evt) {
if (SampleCode::TitleQ(*evt)) {
SkString str("Filter/Dither ");
str.append(gNames[fCurrIndex]);
SampleCode::TitleR(evt, str.c_str());
return true;
}
return this->INHERITED::onQuery(evt);
}
virtual void onDrawContent(SkCanvas* canvas) {
canvas->translate(SkIntToScalar(10), SkIntToScalar(50));
const SkScalar W = SkIntToScalar(fBitmaps[0].width() + 1);
const SkScalar H = SkIntToScalar(fBitmaps[0].height() + 1);
SkPaint paint;
const SkScalar scale = SkFloatToScalar(0.897917f);
canvas->scale(SK_Scalar1, scale);
for (int k = 0; k < 2; k++) {
paint.setFilterLevel(k == 1 ? SkPaint::kLow_FilterLevel : SkPaint::kNone_FilterLevel);
for (int j = 0; j < 2; j++) {
paint.setDither(j == 1);
for (int i = 0; i < fBitmapCount; i++) {
SkScalar x = (k * fBitmapCount + j) * W;
SkScalar y = i * H;
x = SkIntToScalar(SkScalarRound(x));
y = SkIntToScalar(SkScalarRound(y));
canvas->drawBitmap(fBitmaps[i], x, y, &paint);
if (i == 0) {
SkPaint p;
p.setAntiAlias(true);
p.setTextAlign(SkPaint::kCenter_Align);
p.setTextSize(SkIntToScalar(18));
SkString s("dither=");
s.appendS32(paint.isDither());
s.append(" filter=");
s.appendS32(paint.getFilterLevel() != SkPaint::kNone_FilterLevel);
canvas->drawText(s.c_str(), s.size(), x + W/2,
y - p.getTextSize(), p);
}
if (k+j == 2) {
SkPaint p;
p.setAntiAlias(true);
p.setTextSize(SkIntToScalar(18));
SkString s;
s.append(" depth=");
s.appendS32(fBitmaps[i].config() == SkBitmap::kRGB_565_Config ? 16 : 32);
canvas->drawText(s.c_str(), s.size(), x + W + SkIntToScalar(4),
y + H/2, p);
}
}
}
}
}
private:
typedef SampleView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new Filter2View; }
static SkViewRegister reg(MyFactory);
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