gecko-dev/dom/canvas/TextMetrics.h

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3.2 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_TextMetrics_h
#define mozilla_dom_TextMetrics_h
#include "mozilla/dom/CanvasRenderingContext2DBinding.h"
#include "mozilla/dom/NonRefcountedDOMObject.h"
namespace mozilla {
namespace dom {
class TextMetrics final : public NonRefcountedDOMObject {
public:
explicit TextMetrics(double aWidth, double aActualBoundingBoxLeft,
double aActualBoundingBoxRight,
double aFontBoundingBoxAscent,
double aFontBoundingBoxDescent,
double aActualBoundingBoxAscent,
double aActualBoundingBoxDescent, double aEmHeightAscent,
double aEmHeightDescent, double aHangingBaseline,
double aAlphabeticBaseline, double aIdeographicBaseline)
: width(aWidth),
actualBoundingBoxLeft(aActualBoundingBoxLeft),
actualBoundingBoxRight(aActualBoundingBoxRight),
fontBoundingBoxAscent(aFontBoundingBoxAscent),
fontBoundingBoxDescent(aFontBoundingBoxDescent),
actualBoundingBoxAscent(aActualBoundingBoxAscent),
actualBoundingBoxDescent(aActualBoundingBoxDescent),
emHeightAscent(aEmHeightAscent),
emHeightDescent(aEmHeightDescent),
hangingBaseline(aHangingBaseline),
alphabeticBaseline(aAlphabeticBaseline),
ideographicBaseline(aIdeographicBaseline) {
MOZ_COUNT_CTOR(TextMetrics);
}
MOZ_COUNTED_DTOR(TextMetrics)
double Width() const { return width; }
double ActualBoundingBoxLeft() const { return actualBoundingBoxLeft; }
double ActualBoundingBoxRight() const { return actualBoundingBoxRight; }
// y-direction
double FontBoundingBoxAscent() const { return fontBoundingBoxAscent; }
double FontBoundingBoxDescent() const { return fontBoundingBoxDescent; }
double ActualBoundingBoxAscent() const { return actualBoundingBoxAscent; }
double ActualBoundingBoxDescent() const { return actualBoundingBoxDescent; }
double EmHeightAscent() const { return emHeightAscent; }
double EmHeightDescent() const { return emHeightDescent; }
double HangingBaseline() const { return hangingBaseline; }
double AlphabeticBaseline() const { return alphabeticBaseline; }
double IdeographicBaseline() const { return ideographicBaseline; }
bool WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto,
JS::MutableHandle<JSObject*> aReflector) {
return TextMetrics_Binding::Wrap(aCx, this, aGivenProto, aReflector);
}
private:
double width;
double actualBoundingBoxLeft;
double actualBoundingBoxRight;
double fontBoundingBoxAscent;
double fontBoundingBoxDescent;
double actualBoundingBoxAscent;
double actualBoundingBoxDescent;
double emHeightAscent;
double emHeightDescent;
double hangingBaseline;
double alphabeticBaseline;
double ideographicBaseline;
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_TextMetrics_h