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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 "SkCanvas.h"
#include "SkFontMgr.h"
#include "SkGraphics.h"
#include "SkTypeface.h"
// limit this just so we don't take too long to draw
#define MAX_FAMILIES 30
static SkScalar drawString(SkCanvas* canvas, const SkString& text, SkScalar x,
SkScalar y, const SkPaint& paint) {
canvas->drawText(text.c_str(), text.size(), x, y, paint);
return x + paint.measureText(text.c_str(), text.size());
}
class FontMgrGM : public skiagm::GM {
public:
FontMgrGM() {
SkGraphics::SetFontCacheLimit(16 * 1024 * 1024);
}
protected:
virtual SkString onShortName() {
return SkString("fontmgr_iter");
}
virtual SkISize onISize() {
return SkISize::Make(640, 1024);
}
virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
SkScalar y = 20;
SkPaint paint;
paint.setAntiAlias(true);
paint.setLCDRenderText(true);
paint.setSubpixelText(true);
paint.setTextSize(17);
SkAutoTUnref<SkFontMgr> fm(SkFontMgr::RefDefault());
int count = SkMin32(fm->countFamilies(), MAX_FAMILIES);
for (int i = 0; i < count; ++i) {
SkString fname;
fm->getFamilyName(i, &fname);
paint.setTypeface(NULL);
(void)drawString(canvas, fname, 20, y, paint);
SkScalar x = 220;
SkAutoTUnref<SkFontStyleSet> set(fm->createStyleSet(i));
for (int j = 0; j < set->count(); ++j) {
SkString sname;
SkFontStyle fs;
set->getStyle(j, &fs, &sname);
sname.appendf(" [%d %d %d]", fs.weight(), fs.width(), fs.isItalic());
SkSafeUnref(paint.setTypeface(set->createTypeface(j)));
x = drawString(canvas, sname, x, y, paint) + 20;
}
y += 24;
}
}
virtual uint32_t onGetFlags() const SK_OVERRIDE {
// fontdescriptors (and therefore serialization) don't yet understand
// these new styles, so skip tests that exercise that for now.
// If certain fonts are picked up (e.g. Microsoft Jhenghei 20MB for Regular, 12MB for Bold),
// the resulting pdf can be ~700MB and crashes Chrome's PDF viewer.
return kSkipPicture_Flag | kSkipPipe_Flag | kSkipPDF_Flag;
}
private:
typedef GM INHERITED;
};
class FontMgrMatchGM : public skiagm::GM {
SkAutoTUnref<SkFontMgr> fFM;
public:
FontMgrMatchGM() : fFM(SkFontMgr::RefDefault()) {
SkGraphics::SetFontCacheLimit(16 * 1024 * 1024);
}
protected:
virtual SkString onShortName() {
return SkString("fontmgr_match");
}
virtual SkISize onISize() {
return SkISize::Make(640, 1024);
}
void iterateFamily(SkCanvas* canvas, const SkPaint& paint,
SkFontStyleSet* fset) {
SkPaint p(paint);
SkScalar y = 0;
for (int j = 0; j < fset->count(); ++j) {
SkString sname;
SkFontStyle fs;
fset->getStyle(j, &fs, &sname);
sname.appendf(" [%d %d]", fs.weight(), fs.width());
SkSafeUnref(p.setTypeface(fset->createTypeface(j)));
(void)drawString(canvas, sname, 0, y, p);
y += 24;
}
}
void exploreFamily(SkCanvas* canvas, const SkPaint& paint,
SkFontStyleSet* fset) {
SkPaint p(paint);
SkScalar y = 0;
for (int weight = 100; weight <= 900; weight += 200) {
for (int width = 1; width <= 9; width += 2) {
SkFontStyle fs(weight, width, SkFontStyle::kUpright_Slant);
SkTypeface* face = fset->matchStyle(fs);
if (face) {
SkString str;
str.printf("request [%d %d]", fs.weight(), fs.width());
p.setTypeface(face)->unref();
(void)drawString(canvas, str, 0, y, p);
y += 24;
}
}
}
}
virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
SkPaint paint;
paint.setAntiAlias(true);
paint.setLCDRenderText(true);
paint.setSubpixelText(true);
paint.setTextSize(17);
static const char* gNames[] = {
"Helvetica Neue", "Arial"
};
SkFontStyleSet* fset = NULL;
for (size_t i = 0; i < SK_ARRAY_COUNT(gNames); ++i) {
fset = fFM->matchFamily(gNames[i]);
if (fset && fset->count() > 0) {
break;
}
}
if (NULL == fset) {
return;
}
SkAutoUnref aur(fset);
canvas->translate(20, 40);
this->exploreFamily(canvas, paint, fset);
canvas->translate(150, 0);
this->iterateFamily(canvas, paint, fset);
}
virtual uint32_t onGetFlags() const SK_OVERRIDE {
// fontdescriptors (and therefore serialization) don't yet understand
// these new styles, so skip tests that exercise that for now.
return kSkipPicture_Flag | kSkipPipe_Flag;
}
private:
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM( return SkNEW(FontMgrGM); )
DEF_GM( return SkNEW(FontMgrMatchGM); )
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