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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 "SkImageEncoder.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"
#include "SkTypeface.h"
#include "SkStream.h"
static void make_image(SkBitmap* bm, SkBitmap::Config config, int configIndex) {
const int width = 98;
const int height = 100;
SkBitmap device;
device.setConfig(SkBitmap::kARGB_8888_Config, width, height);
device.allocPixels();
SkCanvas canvas(device);
SkPaint paint;
paint.setAntiAlias(true);
canvas.drawColor(SK_ColorRED);
paint.setColor(SK_ColorBLUE);
canvas.drawCircle(SkIntToScalar(width)/2, SkIntToScalar(height)/2,
SkIntToScalar(width)/2, paint);
bm->setConfig(config, width, height);
switch (config) {
case SkBitmap::kARGB_8888_Config:
bm->swap(device);
break;
case SkBitmap::kRGB_565_Config: {
bm->allocPixels();
for (int y = 0; y < height; y++) {
for (int x = 0; x < width; x++) {
*bm->getAddr16(x, y) = SkPixel32ToPixel16(*device.getAddr32(x, y));
}
}
break;
}
case SkBitmap::kIndex8_Config: {
SkPMColor colors[256];
for (int i = 0; i < 256; i++) {
if (configIndex & 1) {
colors[i] = SkPackARGB32(255-i, 0, 0, 255-i);
} else {
colors[i] = SkPackARGB32(0xFF, i, 0, 255-i);
}
}
SkColorTable* ctable = new SkColorTable(colors, 256);
bm->allocPixels(ctable);
ctable->unref();
for (int y = 0; y < height; y++) {
for (int x = 0; x < width; x++) {
*bm->getAddr8(x, y) = SkGetPackedR32(*device.getAddr32(x, y));
}
}
break;
}
default:
break;
}
}
// configs to build the original bitmap in. Can be at most these 3
static const SkBitmap::Config gConfigs[] = {
SkBitmap::kARGB_8888_Config,
SkBitmap::kRGB_565_Config,
SkBitmap::kIndex8_Config, // opaque
SkBitmap::kIndex8_Config // alpha
};
static const char* const gConfigLabels[] = {
"8888", "565", "Index8", "Index8 alpha"
};
// types to encode into. Can be at most these 3. Must match up with gExt[]
static const SkImageEncoder::Type gTypes[] = {
SkImageEncoder::kJPEG_Type,
SkImageEncoder::kPNG_Type
};
// must match up with gTypes[]
static const char* const gExt[] = {
".jpg", ".png"
};
static const char* gPath = "/encoded/";
static void make_name(SkString* name, int config, int ext) {
name->set(gPath);
name->append(gConfigLabels[config]);
name->append(gExt[ext]);
}
#include <sys/stat.h>
class EncodeView : public SampleView {
public:
SkBitmap* fBitmaps;
size_t fBitmapCount;
EncodeView() {
#if 1
(void)mkdir(gPath, S_IRWXU | S_IRWXG | S_IRWXO);
fBitmapCount = SK_ARRAY_COUNT(gConfigs);
fBitmaps = new SkBitmap[fBitmapCount];
for (size_t i = 0; i < fBitmapCount; i++) {
make_image(&fBitmaps[i], gConfigs[i], i);
for (size_t j = 0; j < SK_ARRAY_COUNT(gExt); j++) {
SkString path;
make_name(&path, i, j);
// remove any previous run of this file
remove(path.c_str());
SkImageEncoder* codec = SkImageEncoder::Create(gTypes[j]);
if (NULL == codec ||
!codec->encodeFile(path.c_str(), fBitmaps[i], 100)) {
SkDebugf("------ failed to encode %s\n", path.c_str());
remove(path.c_str()); // remove any partial file
}
delete codec;
}
}
#else
fBitmaps = NULL;
fBitmapCount = 0;
#endif
this->setBGColor(0xFFDDDDDD);
}
virtual ~EncodeView() {
delete[] fBitmaps;
}
protected:
// overrides from SkEventSink
virtual bool onQuery(SkEvent* evt) {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "ImageEncoder");
return true;
}
return this->INHERITED::onQuery(evt);
}
virtual void onDrawContent(SkCanvas* canvas) {
if (fBitmapCount == 0) {
return;
}
SkPaint paint;
paint.setAntiAlias(true);
paint.setTextAlign(SkPaint::kCenter_Align);
canvas->translate(SkIntToScalar(10), SkIntToScalar(20));
SkScalar x = 0, y = 0, maxX = 0;
const int SPACER = 10;
for (size_t i = 0; i < fBitmapCount; i++) {
canvas->drawText(gConfigLabels[i], strlen(gConfigLabels[i]),
x + SkIntToScalar(fBitmaps[i].width()) / 2, 0,
paint);
y = paint.getTextSize();
canvas->drawBitmap(fBitmaps[i], x, y);
SkScalar yy = y;
for (size_t j = 0; j < SK_ARRAY_COUNT(gExt); j++) {
yy += SkIntToScalar(fBitmaps[i].height() + 10);
SkBitmap bm;
SkString name;
make_name(&name, i, j);
SkImageDecoder::DecodeFile(name.c_str(), &bm);
canvas->drawBitmap(bm, x, yy);
}
x += SkIntToScalar(fBitmaps[i].width() + SPACER);
if (x > maxX) {
maxX = x;
}
}
y = (paint.getTextSize() + SkIntToScalar(fBitmaps[0].height())) * 3 / 2;
x = maxX + SkIntToScalar(10);
paint.setTextAlign(SkPaint::kLeft_Align);
for (size_t j = 0; j < SK_ARRAY_COUNT(gExt); j++) {
canvas->drawText(gExt[j], strlen(gExt[j]), x, y, paint);
y += SkIntToScalar(fBitmaps[0].height() + SPACER);
}
}
virtual SkView::Click* onFindClickHandler(SkScalar x, SkScalar y) {
this->inval(NULL);
return this->INHERITED::onFindClickHandler(x, y);
}
private:
typedef SampleView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new EncodeView; }
static SkViewRegister reg(MyFactory);
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