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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 "SkStream.h"
#include "SkPaint.h"
static void make_checker(SkBitmap* bm, int size, int numChecks) {
bm->allocN32Pixels(size, size);
for (int y = 0; y < size; ++y) {
for (int x = 0; x < size; ++x) {
SkPMColor* s = bm->getAddr32(x, y);
int cx = (x * numChecks) / size;
int cy = (y * numChecks) / size;
if ((cx+cy)%2) {
*s = 0xFFFFFFFF;
} else {
*s = 0xFF000000;
}
}
}
}
static void setTypeface(SkPaint* paint, const char name[], SkFontStyle style) {
sk_tool_utils::set_portable_typeface(paint, name, style);
}
class DownsampleBitmapGM : public skiagm::GM {
public:
SkBitmap fBM;
SkString fName;
bool fBitmapMade;
SkFilterQuality fFilterQuality;
DownsampleBitmapGM(SkFilterQuality filterQuality)
: fFilterQuality(filterQuality)
{
this->setBGColor(sk_tool_utils::color_to_565(0xFFDDDDDD));
fBitmapMade = false;
}
const char* filterQualityToString() {
static const char *filterQualityNames[] = {
"none", "low", "medium", "high"
};
return filterQualityNames[fFilterQuality];
}
protected:
SkString onShortName() override {
return fName;
}
SkISize onISize() override {
make_bitmap_wrapper();
return SkISize::Make(fBM.width(), 4 * fBM.height());
}
void make_bitmap_wrapper() {
if (!fBitmapMade) {
fBitmapMade = true;
make_bitmap();
}
}
virtual void make_bitmap() = 0;
void onDraw(SkCanvas* canvas) override {
make_bitmap_wrapper();
int curY = 0;
int curHeight;
float curScale = 1;
do {
SkMatrix matrix;
matrix.setScale( curScale, curScale );
SkPaint paint;
paint.setFilterQuality(fFilterQuality);
canvas->save();
canvas->translate(0, (SkScalar)curY);
canvas->concat(matrix);
canvas->drawBitmap(fBM, 0, 0, &paint);
canvas->restore();
curHeight = (int) (fBM.height() * curScale + 2);
curY += curHeight;
curScale *= 0.75f;
} while (curHeight >= 2 && curY < 4*fBM.height());
}
private:
typedef skiagm::GM INHERITED;
};
class DownsampleBitmapTextGM: public DownsampleBitmapGM {
public:
DownsampleBitmapTextGM(float textSize, SkFilterQuality filterQuality)
: INHERITED(filterQuality), fTextSize(textSize)
{
fName.printf("downsamplebitmap_text_%s_%.2fpt", this->filterQualityToString(), fTextSize);
}
protected:
float fTextSize;
void make_bitmap() 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, "serif", SkFontStyle());
canvas.drawText("Hamburgefons", 12, fTextSize/2, 1.2f*fTextSize, paint);
setTypeface(&paint, "serif", SkFontStyle::FromOldStyle(SkTypeface::kBold));
canvas.drawText("Hamburgefons", 12, fTextSize/2, 2.4f*fTextSize, paint);
setTypeface(&paint, "serif", SkFontStyle::FromOldStyle(SkTypeface::kItalic));
canvas.drawText("Hamburgefons", 12, fTextSize/2, 3.6f*fTextSize, paint);
setTypeface(&paint, "serif", SkFontStyle::FromOldStyle(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, SkFilterQuality filterQuality)
: INHERITED(filterQuality), fSize(size), fNumChecks(numChecks)
{
fName.printf("downsamplebitmap_checkerboard_%s_%d_%d", this->filterQualityToString(), fSize, fNumChecks);
}
protected:
int fSize;
int fNumChecks;
void make_bitmap() override {
make_checker(&fBM, fSize, fNumChecks);
}
private:
typedef DownsampleBitmapGM INHERITED;
};
class DownsampleBitmapImageGM: public DownsampleBitmapGM {
public:
DownsampleBitmapImageGM(const char filename[], SkFilterQuality filterQuality)
: INHERITED(filterQuality), fFilename(filename)
{
fName.printf("downsamplebitmap_image_%s_%s", this->filterQualityToString(), filename);
}
protected:
SkString fFilename;
int fSize;
void make_bitmap() override {
if (!GetResourceAsBitmap(fFilename.c_str(), &fBM)) {
fBM.allocN32Pixels(1, 1);
fBM.eraseARGB(255, 255, 0 , 0); // red == bad
}
fSize = fBM.height();
}
private:
typedef DownsampleBitmapGM INHERITED;
};
DEF_GM( return new DownsampleBitmapTextGM(72, kHigh_SkFilterQuality); )
DEF_GM( return new DownsampleBitmapCheckerboardGM(512,256, kHigh_SkFilterQuality); )
DEF_GM( return new DownsampleBitmapImageGM("mandrill_512.png", kHigh_SkFilterQuality); )
DEF_GM( return new DownsampleBitmapTextGM(72, kMedium_SkFilterQuality); )
DEF_GM( return new DownsampleBitmapCheckerboardGM(512,256, kMedium_SkFilterQuality); )
DEF_GM( return new DownsampleBitmapImageGM("mandrill_512.png", kMedium_SkFilterQuality); )
DEF_GM( return new DownsampleBitmapTextGM(72, kLow_SkFilterQuality); )
DEF_GM( return new DownsampleBitmapCheckerboardGM(512,256, kLow_SkFilterQuality); )
DEF_GM( return new DownsampleBitmapImageGM("mandrill_512.png", kLow_SkFilterQuality); )
DEF_GM( return new DownsampleBitmapTextGM(72, kNone_SkFilterQuality); )
DEF_GM( return new DownsampleBitmapCheckerboardGM(512,256, kNone_SkFilterQuality); )
DEF_GM( return new DownsampleBitmapImageGM("mandrill_512.png", kNone_SkFilterQuality); )
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