/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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* 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 .
*/
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;
};
}; }; }; };
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