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73 lines
2.9 KiB
C++
73 lines
2.9 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Oracle Corporation code.
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*
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* The Initial Developer of the Original Code is Oracle Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2005
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Stuart Parmenter <pavlov@pavlov.net>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef GFX_TEXTRUN_H
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#define GFX_TEXTRUN_H
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#include "prtypes.h"
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#include "gfxTypes.h"
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class nsIFontMetrics;
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class nsIAtom;
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class gfxTextRun {
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// these do not copy the text
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gfxTextRun(const char* ASCII, int length, nsIFontMetrics* font, nsIAtom* language);
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gfxTextRun(const PRUnichar* unicode, int length, nsIFontMetrics* font, nsIAtom* language);
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enum { ClusterStart = 0x1 } CharFlags;
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// ClusterStart: character is the first character of a cluster/glyph
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void GetCharacterFlags(int pos, int len, CharFlags* flags);
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struct Dimensions {
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gfxFloat ascent, descent, width, leftBearing, rightBearing;
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};
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Dimensions MeasureText(int pos, int len);
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// Compute how many characters from this string starting at
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// character 'pos' and up to length 'len' fit
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// into the given width. 'breakflags' indicates our
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// preferences about where we allow breaks.
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// We will usually want to call MeasureText right afterwards,
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// the implementor could optimize for that.
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int GetCharsFit(int pos, int len, gfxFloat width, int breakflags);
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int GetPositionInString(gfxPoint& pt);
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};
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#endif
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