112 lines
3.8 KiB
Java
112 lines
3.8 KiB
Java
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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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 mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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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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/*
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* helper class to trim a string and its rect to fit a clip rect width
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*/
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// when who what
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// 09/23/98 jband created file
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//
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package com.netscape.jsdebugging.ifcui;
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import netscape.application.*;
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import netscape.util.*;
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/* NOTE: results are in object vars -- caller must handle synchronization */
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public class DrawStringClipper
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{
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public DrawStringClipper( int charWidth ) {_charWidth = charWidth;}
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public void setCharWidth( int charWidth ) {_charWidth = charWidth;}
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public int doClip(String str, Rect rect, Rect clipRect)
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{
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_str = str;
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_rect = rect;
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_len = _str.length();
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int charsToTrim;
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int space;
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if( _len > 0 )
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{
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space = (_rect.x + _rect.width) - (clipRect.x + clipRect.width);
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if( space > _charWidth )
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{
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space = (space/_charWidth)*_charWidth;
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int trail = (_rect.width/_charWidth) - _len;
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charsToTrim = Math.min(_len, (space/_charWidth)- trail);
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if( charsToTrim > 0 )
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{
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_rect.width -= space;
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_str = _str.substring(0, _len-charsToTrim);
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_len -= charsToTrim;
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}
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}
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}
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if( _len > 0 )
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{
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space = clipRect.x - _rect.x;
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if( space > _charWidth )
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{
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space = (space/_charWidth)*_charWidth;
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charsToTrim = Math.min(_len, space / _charWidth);
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if( charsToTrim > 0 )
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{
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_rect.x += space;
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_rect.width -= space;
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_str = _str.substring(charsToTrim);
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_len -= charsToTrim;
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}
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}
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}
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return _len;
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}
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public String getString() {return _str;}
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public int getStringLength() {return _len;}
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public Rect getRect() {return _rect;}
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private String _str;
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private int _len;
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private Rect _rect;
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private int _charWidth;
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}
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