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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 "Resources.h"
#include "SkGradientShader.h"
#include "SkTypeface.h"
#include "SkImageDecoder.h"
#include "SkStream.h"
#include "SkPaint.h"
static void setTypeface(SkPaint* paint, const char name[], SkTypeface::Style style) {
sk_tool_utils::set_portable_typeface(paint, name, style);
}
class DownsampleBitmapGM : public skiagm::GM {
public:
SkBitmap fBM;
SkString fName;
bool fBitmapMade;
SkPaint::FilterLevel fFilterLevel;
DownsampleBitmapGM(SkPaint::FilterLevel filterLevel)
: fFilterLevel(filterLevel)
{
this->setBGColor(0xFFDDDDDD);
fBitmapMade = false;
}
const char* filterLevelToString() {
static const char *filterLevelNames[] = {
"none", "low", "medium", "high"
};
return filterLevelNames[fFilterLevel];
}
protected:
virtual uint32_t onGetFlags() const SK_OVERRIDE {
if (SkPaint::kHigh_FilterLevel != fFilterLevel) {
return kSkipTiled_Flag;
}
return 0;
}
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.setFilterLevel(fFilterLevel);
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, SkPaint::FilterLevel filterLevel)
: INHERITED(filterLevel), fTextSize(textSize)
{
fName.printf("downsamplebitmap_text_%s_%.2fpt", this->filterLevelToString(), fTextSize);
}
protected:
float fTextSize;
virtual void make_bitmap() SK_OVERRIDE {
fBM.allocN32Pixels(int(fTextSize * 8), int(fTextSize * 6));
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, SkPaint::FilterLevel filterLevel)
: INHERITED(filterLevel), fSize(size), fNumChecks(numChecks)
{
fName.printf("downsamplebitmap_checkerboard_%s_%d_%d", this->filterLevelToString(), fSize, fNumChecks);
}
protected:
int fSize;
int fNumChecks;
virtual void make_bitmap() SK_OVERRIDE {
fBM.allocN32Pixels(fSize, fSize);
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[], SkPaint::FilterLevel filterLevel)
: INHERITED(filterLevel), fFilename(filename)
{
fName.printf("downsamplebitmap_image_%s_%s", this->filterLevelToString(), filename);
}
protected:
SkString fFilename;
int fSize;
virtual void make_bitmap() SK_OVERRIDE {
SkImageDecoder* codec = NULL;
SkString resourcePath = GetResourcePath(fFilename.c_str());
SkFILEStream stream(resourcePath.c_str());
if (stream.isValid()) {
codec = SkImageDecoder::Factory(&stream);
}
if (codec) {
stream.rewind();
codec->decode(&stream, &fBM, kN32_SkColorType, SkImageDecoder::kDecodePixels_Mode);
SkDELETE(codec);
} else {
fBM.allocN32Pixels(1, 1);
*(fBM.getAddr32(0,0)) = 0xFF0000FF; // red == bad
}
fSize = fBM.height();
}
private:
typedef DownsampleBitmapGM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM( return new DownsampleBitmapTextGM(72, SkPaint::kHigh_FilterLevel); )
DEF_GM( return new DownsampleBitmapCheckerboardGM(512,256, SkPaint::kHigh_FilterLevel); )
DEF_GM( return new DownsampleBitmapImageGM("mandrill_512.png", SkPaint::kHigh_FilterLevel); )
DEF_GM( return new DownsampleBitmapTextGM(72, SkPaint::kMedium_FilterLevel); )
DEF_GM( return new DownsampleBitmapCheckerboardGM(512,256, SkPaint::kMedium_FilterLevel); )
DEF_GM( return new DownsampleBitmapImageGM("mandrill_512.png", SkPaint::kMedium_FilterLevel); )
DEF_GM( return new DownsampleBitmapTextGM(72, SkPaint::kLow_FilterLevel); )
DEF_GM( return new DownsampleBitmapCheckerboardGM(512,256, SkPaint::kLow_FilterLevel); )
DEF_GM( return new DownsampleBitmapImageGM("mandrill_512.png", SkPaint::kLow_FilterLevel); )
DEF_GM( return new DownsampleBitmapTextGM(72, SkPaint::kNone_FilterLevel); )
DEF_GM( return new DownsampleBitmapCheckerboardGM(512,256, SkPaint::kNone_FilterLevel); )
DEF_GM( return new DownsampleBitmapImageGM("mandrill_512.png", SkPaint::kNone_FilterLevel); )
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