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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 "SkStream.h"
#include "SkTypeface.h"
namespace skiagm {
class ColorEmojiGM : public GM {
public:
ColorEmojiGM() {
fTypeface = NULL;
}
~ColorEmojiGM() {
SkSafeUnref(fTypeface);
}
protected:
virtual void onOnceBeforeDraw() SK_OVERRIDE {
SkString filename(INHERITED::gResourcePath);
filename.append("/Funkster.ttf");
SkAutoTUnref<SkFILEStream> stream(new SkFILEStream(filename.c_str()));
if (!stream->isValid()) {
SkDebugf("Could not find Funkster.ttf, please set --resourcePath correctly.\n");
return;
}
fTypeface = SkTypeface::CreateFromStream(stream);
}
virtual SkString onShortName() {
return SkString("coloremoji");
}
virtual SkISize onISize() {
return make_isize(640, 480);
}
virtual void onDraw(SkCanvas* canvas) {
canvas->drawColor(SK_ColorGRAY);
SkPaint paint;
paint.setTypeface(fTypeface);
const char* text = "hamburgerfons";
// draw text at different point sizes
const int textSize[] = { 10, 30, 50 };
const int textYOffset[] = { 10, 40, 100};
SkASSERT(sizeof(textSize) == sizeof(textYOffset));
for (size_t y = 0; y < sizeof(textSize) / sizeof(int); ++y) {
paint.setTextSize(SkIntToScalar(textSize[y]));
canvas->drawText(text, strlen(text), 10, SkIntToScalar(textYOffset[y]), paint);
}
// setup work needed to draw text with different clips
canvas->translate(10, 160);
paint.setTextSize(40);
// compute the bounds of the text
SkRect bounds;
paint.measureText(text, strlen(text), &bounds);
const SkScalar boundsHalfWidth = bounds.width() * SK_ScalarHalf;
const SkScalar boundsHalfHeight = bounds.height() * SK_ScalarHalf;
const SkScalar boundsQuarterWidth = boundsHalfWidth * SK_ScalarHalf;
const SkScalar boundsQuarterHeight = boundsHalfHeight * SK_ScalarHalf;
SkRect upperLeftClip = SkRect::MakeXYWH(bounds.left(), bounds.top(),
boundsHalfWidth, boundsHalfHeight);
SkRect lowerRightClip = SkRect::MakeXYWH(bounds.centerX(), bounds.centerY(),
boundsHalfWidth, boundsHalfHeight);
SkRect interiorClip = bounds;
interiorClip.inset(boundsQuarterWidth, boundsQuarterHeight);
const SkRect clipRects[] = { bounds, upperLeftClip, lowerRightClip, interiorClip };
SkPaint clipHairline;
clipHairline.setColor(SK_ColorWHITE);
clipHairline.setStyle(SkPaint::kStroke_Style);
for (size_t x = 0; x < sizeof(clipRects) / sizeof(SkRect); ++x) {
canvas->save();
canvas->drawRect(clipRects[x], clipHairline);
paint.setAlpha(0x20);
canvas->drawText(text, strlen(text), 0, 0, paint);
canvas->clipRect(clipRects[x]);
paint.setAlpha(0xFF);
canvas->drawText(text, strlen(text), 0, 0, paint);
canvas->restore();
canvas->translate(0, bounds.height() + SkIntToScalar(25));
}
}
private:
SkTypeface* fTypeface;
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
#if !defined(SK_BUILD_FOR_ANDROID)
// fail for now until the appropriate freetype changes are submitted
static GM* MyFactory(void*) { return new ColorEmojiGM; }
static GMRegistry reg(MyFactory);
#endif
}
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