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/*
* Copyright 2013 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm.h"
#include "SkGradientShader.h"
#include "SkTypeface.h"
#include "SkImageDecoder.h"
#include "SkStream.h"
static void setTypeface(SkPaint* paint, const char name[], SkTypeface::Style style) {
SkSafeUnref(paint->setTypeface(SkTypeface::CreateFromName(name, style)));
}
class DownsampleBitmapGM : public skiagm::GM {
public:
SkBitmap fBM;
SkString fName;
bool fBitmapMade;
DownsampleBitmapGM()
{
this->setBGColor(0xFFDDDDDD);
fBitmapMade = false;
}
void setName(const char name[]) {
fName.set(name);
}
protected:
virtual SkString onShortName() SK_OVERRIDE {
return fName;
}
virtual SkISize onISize() SK_OVERRIDE {
make_bitmap_wrapper();
return SkISize::Make(4 * fBM.width(), fBM.height());
}
void make_bitmap_wrapper() {
if (!fBitmapMade) {
fBitmapMade = true;
make_bitmap();
}
}
virtual void make_bitmap() = 0;
virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
make_bitmap_wrapper();
int curX = 0;
int curWidth;
float curScale = 1;
do {
SkMatrix matrix;
matrix.setScale( curScale, curScale );
SkPaint paint;
paint.setFilterBitmap(true);
paint.setFlags( paint.getFlags() | SkPaint::kHighQualityFilterBitmap_Flag );
canvas->save();
canvas->translate( (SkScalar) curX, 0.f );
canvas->drawBitmapMatrix( fBM, matrix, &paint );
canvas->restore();
curWidth = (int) (fBM.width() * curScale + 2);
curX += curWidth;
curScale *= 0.75f;
} while (curWidth >= 2 && curX < 4*fBM.width());
}
private:
typedef skiagm::GM INHERITED;
};
class DownsampleBitmapTextGM: public DownsampleBitmapGM {
public:
DownsampleBitmapTextGM(float textSize)
: fTextSize(textSize)
{
char name[1024];
sprintf(name, "downsamplebitmap_text_%.2fpt", fTextSize);
setName(name);
}
protected:
float fTextSize;
virtual void make_bitmap() SK_OVERRIDE {
fBM.setConfig(SkBitmap::kARGB_8888_Config, int(fTextSize * 8), int(fTextSize * 6));
fBM.allocPixels();
SkCanvas canvas(fBM);
canvas.drawColor(SK_ColorWHITE);
SkPaint paint;
paint.setAntiAlias(true);
paint.setSubpixelText(true);
paint.setTextSize(fTextSize);
setTypeface(&paint, "Times", SkTypeface::kNormal);
canvas.drawText("Hamburgefons", 12, fTextSize/2, 1.2f*fTextSize, paint);
setTypeface(&paint, "Times", SkTypeface::kBold);
canvas.drawText("Hamburgefons", 12, fTextSize/2, 2.4f*fTextSize, paint);
setTypeface(&paint, "Times", SkTypeface::kItalic);
canvas.drawText("Hamburgefons", 12, fTextSize/2, 3.6f*fTextSize, paint);
setTypeface(&paint, "Times", SkTypeface::kBoldItalic);
canvas.drawText("Hamburgefons", 12, fTextSize/2, 4.8f*fTextSize, paint);
}
private:
typedef DownsampleBitmapGM INHERITED;
};
class DownsampleBitmapCheckerboardGM: public DownsampleBitmapGM {
public:
DownsampleBitmapCheckerboardGM(int size, int numChecks)
: fSize(size), fNumChecks(numChecks)
{
char name[1024];
sprintf(name, "downsamplebitmap_checkerboard_%d_%d", fSize, fNumChecks);
setName(name);
}
protected:
int fSize;
int fNumChecks;
virtual void make_bitmap() SK_OVERRIDE {
fBM.setConfig(SkBitmap::kARGB_8888_Config, fSize, fSize);
fBM.allocPixels();
SkAutoLockPixels lock(fBM);
for (int y = 0; y < fSize; ++y) {
for (int x = 0; x < fSize; ++x) {
SkPMColor* s = fBM.getAddr32(x, y);
int cx = (x * fNumChecks) / fSize;
int cy = (y * fNumChecks) / fSize;
if ((cx+cy)%2) {
*s = 0xFFFFFFFF;
} else {
*s = 0xFF000000;
}
}
}
}
private:
typedef DownsampleBitmapGM INHERITED;
};
class DownsampleBitmapImageGM: public DownsampleBitmapGM {
public:
DownsampleBitmapImageGM(const char filename[])
: fFilename(filename)
{
char name[1024];
sprintf(name, "downsamplebitmap_image_%s", filename);
setName(name);
}
protected:
SkString fFilename;
int fSize;
virtual void make_bitmap() SK_OVERRIDE {
SkString path(skiagm::GM::gResourcePath);
path.append("/");
path.append(fFilename);
SkImageDecoder *codec = NULL;
SkFILEStream stream(path.c_str());
if (stream.isValid()) {
codec = SkImageDecoder::Factory(&stream);
}
if (codec) {
stream.rewind();
codec->decode(&stream, &fBM, SkBitmap::kARGB_8888_Config,
SkImageDecoder::kDecodePixels_Mode);
SkDELETE(codec);
} else {
fBM.setConfig(SkBitmap::kARGB_8888_Config, 1, 1);
fBM.allocPixels();
*(fBM.getAddr32(0,0)) = 0xFF0000FF; // red == bad
}
fSize = fBM.height();
}
private:
typedef DownsampleBitmapGM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM( return new DownsampleBitmapTextGM(72); )
DEF_GM( return new DownsampleBitmapCheckerboardGM(512,256); )
DEF_GM( return new DownsampleBitmapImageGM("mandrill_512.png"); )
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