Kate

katecursor.cpp

00001 /* This file is part of the KDE libraries
00002    Copyright (C) 2002 Christian Couder <christian@kdevelop.org>
00003    Copyright (C) 2001, 2003 Christoph Cullmann <cullmann@kde.org>
00004    Copyright (C) 2001 Joseph Wenninger <jowenn@kde.org>
00005    Copyright (C) 1999 Jochen Wilhelmy <digisnap@cs.tu-berlin.de>
00006 
00007    This library is free software; you can redistribute it and/or
00008    modify it under the terms of the GNU Library General Public
00009    License version 2 as published by the Free Software Foundation.
00010 
00011    This library is distributed in the hope that it will be useful,
00012    but WITHOUT ANY WARRANTY; without even the implied warranty of
00013    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014    Library General Public License for more details.
00015 
00016    You should have received a copy of the GNU Library General Public License
00017    along with this library; see the file COPYING.LIB.  If not, write to
00018    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00019    Boston, MA 02110-1301, USA.
00020 */
00021 
00022 #include "katecursor.h"
00023 
00024 #include "katedocument.h"
00025 #include "katetextline.h"
00026 
00027 //
00028 // KateDocCursor implementation
00029 //
00030 
00031 KateDocCursor::KateDocCursor(KateDocument *doc) : KateTextCursor(), m_doc(doc)
00032 {
00033 }
00034 
00035 KateDocCursor::KateDocCursor(int line, int col, KateDocument *doc)
00036   : KateTextCursor(line, col), m_doc(doc)
00037 {
00038 }
00039 
00040 bool KateDocCursor::validPosition(uint line, uint col)
00041 {
00042   return line < m_doc->numLines() && (int)col <= m_doc->lineLength(line);
00043 }
00044 
00045 bool KateDocCursor::validPosition()
00046 {
00047   return validPosition(line(), col());
00048 }
00049 
00050 void KateDocCursor::position(uint *pline, uint *pcol) const
00051 {
00052   if (pline)
00053     *pline = (uint)line();
00054 
00055   if (pcol)
00056     *pcol = (uint)col();
00057 }
00058 
00059 bool KateDocCursor::setPosition(uint line, uint col)
00060 {
00061   bool ok = validPosition(line, col);
00062 
00063   if(ok)
00064     setPos(line, col);
00065 
00066   return ok;
00067 }
00068 
00069 bool KateDocCursor::gotoNextLine()
00070 {
00071   bool ok = (line() + 1 < (int)m_doc->numLines());
00072 
00073   if (ok) {
00074     m_line++;
00075     m_col = 0;
00076   }
00077 
00078   return ok;
00079 }
00080 
00081 bool KateDocCursor::gotoPreviousLine()
00082 {
00083   bool ok = (line() > 0);
00084 
00085   if (ok) {
00086     m_line--;
00087     m_col = 0;
00088   }
00089 
00090   return ok;
00091 }
00092 
00093 bool KateDocCursor::gotoEndOfNextLine()
00094 {
00095   bool ok = gotoNextLine();
00096   if(ok)
00097     m_col = m_doc->lineLength(line());
00098 
00099   return ok;
00100 }
00101 
00102 bool KateDocCursor::gotoEndOfPreviousLine()
00103 {
00104   bool ok = gotoPreviousLine();
00105   if(ok)
00106     m_col = m_doc->lineLength(line());
00107 
00108   return ok;
00109 }
00110 
00111 int KateDocCursor::nbCharsOnLineAfter()
00112 {
00113   return ((int)m_doc->lineLength(line()) - col());
00114 }
00115 
00116 bool KateDocCursor::moveForward(uint nbChar)
00117 {
00118   int nbCharLeft = nbChar - nbCharsOnLineAfter();
00119 
00120   if(nbCharLeft > 0) {
00121     return gotoNextLine() && moveForward((uint)nbCharLeft);
00122   } else {
00123     m_col += nbChar;
00124     return true;
00125   }
00126 }
00127 
00128 bool KateDocCursor::moveBackward(uint nbChar)
00129 {
00130   int nbCharLeft = nbChar - m_col;
00131   if(nbCharLeft > 0) {
00132     return gotoEndOfPreviousLine() && moveBackward((uint)nbCharLeft);
00133   } else {
00134     m_col -= nbChar;
00135     return true;
00136   }
00137 }
00138 
00139 bool KateDocCursor::insertText(const QString& s)
00140 {
00141   return m_doc->insertText(line(), col(), s);
00142 }
00143 
00144 bool KateDocCursor::removeText(uint nbChar)
00145 {
00146   // Get a cursor at the end of the removed area
00147   KateDocCursor endCursor = *this;
00148   endCursor.moveForward(nbChar);
00149 
00150   // Remove the text
00151   return m_doc->removeText((uint)line(), (uint)col(),
00152          (uint)endCursor.line(), (uint)endCursor.col());
00153 }
00154 
00155 QChar KateDocCursor::currentChar() const
00156 {
00157   return m_doc->plainKateTextLine(line())->getChar(col());
00158 }
00159 
00160 uchar KateDocCursor::currentAttrib() const
00161 {
00162   return m_doc->plainKateTextLine(line())->attribute(col());
00163 }
00164 
00165 bool KateDocCursor::nextNonSpaceChar()
00166 {
00167   for(; m_line < (int)m_doc->numLines(); m_line++) {
00168     m_col = m_doc->plainKateTextLine(line())->nextNonSpaceChar(col());
00169     if(m_col != -1)
00170       return true; // Next non-space char found
00171     m_col = 0;
00172   }
00173   // No non-space char found
00174   setPos(-1, -1);
00175   return false;
00176 }
00177 
00178 bool KateDocCursor::previousNonSpaceChar()
00179 {
00180   while (true) {
00181     m_col = m_doc->plainKateTextLine(line())->previousNonSpaceChar(col());
00182     if(m_col != -1) return true; // Previous non-space char found
00183     if(m_line == 0) return false;
00184     --m_line;
00185     m_col = m_doc->plainKateTextLine(m_line)->length();
00186   }
00187   // No non-space char found
00188   setPos(-1, -1);
00189   return false;
00190 }
00191 
00192 // kate: space-indent on; indent-width 2; replace-tabs on;
Kate

katecursor.cpp

Kate

API Reference
