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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2008 by Sun Microsystems, Inc.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: FontMetrics.idl,v $
* $Revision: 1.5 $
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#ifndef __com_sun_star_rendering_FontMetrics_idl__
#define __com_sun_star_rendering_FontMetrics_idl__
module com { module sun { module star { module rendering {
/** Metrics global to the font, i.e. not specific to single
glyphs. The font height is defined as
ascent+descent+internalLeading, and therefore not explicitely
included here.<p>
Please note that when querying FontMetrics from an XCanvasFont
interface, all values here are given relative to the font cell
size. That means, the referenceCharWidth and/or
ascent+descent+internalLeading will approximately (rounded to
integer device resolution, or exactly, if fractional font
rendering is enabled) match the referenceAdvancement/cellSize
members of the FontRequest for which the XCanvasFont was
queried. Please be aware that the values returned in this
structure only map one-to-one to device pixel, if the combined
rendering transformation for text output equals the identity
transformation. Otherwise, the text output (and thus the resulting
metrics) will be subject to that transformation. Depending on the
underlying font technology, actual device output might be off by
up to one device pixel from the transformed metrics.
@since OOo 2.0.0
*/
struct FontMetrics
{
/// Ascent (above the baseline) part of the font.
double Ascent;
//-------------------------------------------------------------------------
/// Descent (below the baseline) part of the font.
double Descent;
//-------------------------------------------------------------------------
/// Extra space above ascent
double InternalLeading;
//-------------------------------------------------------------------------
/** Extra space outside the font cells.<p>
It should not contain ink marks and is typically used
by the font designer to modify the line distance.<p>
*/
double ExternalLeading;
//-------------------------------------------------------------------------
/** This value specifies the reference character width of the
font.<p>
It's roughly equivalent to the average width of all
characters, and if one needs a font with double character
width, the referenceCharSize should be doubled.<p>
*/
double ReferenceCharSize;
//-------------------------------------------------------------------------
/** Specifies the offset to be added to the baseline when drawing
underlined text.
*/
double UnderlineOffset;
//-------------------------------------------------------------------------
/** Specifies the offset to be added to the baseline when striking
through the text.
*/
double StrikeThroughOffset;
};
}; }; }; };
#endif
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