skia2/gm/typeface.cpp

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/*
* Copyright 2012 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 "SkString.h"
#include "SkTypeface.h"
#include "SkTypes.h"
namespace skiagm {
const char* gFaces[] = {
"Times Roman",
"Hiragino Maru Gothic Pro",
"Papyrus",
"Helvetica",
"Courier New"
};
class TypefaceGM : public GM {
public:
TypefaceGM() {
fFaces = new SkTypeface*[SK_ARRAY_COUNT(gFaces)];
for (size_t i = 0; i < SK_ARRAY_COUNT(gFaces); i++) {
fFaces[i] = SkTypeface::CreateFromName(gFaces[i], SkTypeface::kNormal);
}
}
virtual ~TypefaceGM() {
for (size_t i = 0; i < SK_ARRAY_COUNT(gFaces); i++) {
fFaces[i]->unref();
}
delete fFaces;
}
protected:
virtual SkString onShortName() SK_OVERRIDE {
return SkString("typeface");
}
virtual SkISize onISize() SK_OVERRIDE {
return SkISize::Make(640, 480);
}
virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
SkString text("Typefaces are fun!");
SkScalar y = 0;
SkPaint paint;
paint.setAntiAlias(true);
for (size_t i = 0; i < SK_ARRAY_COUNT(gFaces); i++) {
this->drawWithFace(text, i, y, paint, canvas);
}
// Now go backwards
for (int i = SK_ARRAY_COUNT(gFaces) - 1; i >= 0; i--) {
this->drawWithFace(text, i, y, paint, canvas);
}
}
private:
void drawWithFace(const SkString& text, int i, SkScalar& y, SkPaint& paint,
SkCanvas* canvas) {
paint.setTypeface(fFaces[i]);
y += paint.getFontMetrics(NULL);
canvas->drawText(text.c_str(), text.size(), 0, y, paint);
}
SkTypeface** fFaces;
typedef GM INHERITED;
};
////////////////////////////////////////////////////////////////////////////////
static GM* MyFactory(void*) { return new TypefaceGM; }
static GMRegistry reg(MyFactory);
} // skiagm