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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* 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/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#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 explicitly
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
*/
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
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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