skia2/samplecode/SampleLCD.cpp

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#include "SampleCode.h"
#include "SkView.h"
#include "SkCanvas.h"
#include "SkDevice.h"
#include "SkPaint.h"
#include "SkShader.h"
class LCDView : public SkView {
public:
LCDView() {}
protected:
// overrides from SkEventSink
virtual bool onQuery(SkEvent* evt) {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "LCD Text");
return true;
}
return this->INHERITED::onQuery(evt);
}
void drawBG(SkCanvas* canvas) {
canvas->drawColor(SK_ColorWHITE);
}
virtual void onDraw(SkCanvas* canvas) {
this->drawBG(canvas);
SkPaint paint;
paint.setAntiAlias(true);
SkScalar textSize = SkIntToScalar(6);
SkScalar delta = SK_Scalar1;
const char* text = "HHHamburgefonts iii";
size_t len = strlen(text);
SkScalar x0 = SkIntToScalar(10);
SkScalar x1 = SkIntToScalar(310);
SkScalar y = SkIntToScalar(20);
for (int i = 0; i < 20; i++) {
paint.setTextSize(textSize);
textSize += delta;
paint.setLCDRenderText(false);
canvas->drawText(text, len, x0, y, paint);
paint.setLCDRenderText(true);
canvas->drawText(text, len, x1, y, paint);
y += paint.getFontSpacing();
}
}
private:
typedef SkView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new LCDView; }
static SkViewRegister reg(MyFactory);