src/textcursor.C

   1 /**
   2  * \file textcursor.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author André Pönitz
   7  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12
  13 #include "textcursor.h"
  14 #include "paragraph.h"
  15 #include "ParagraphList_fwd.h"
  16 #include "debug.h"
  17
  18 #include <string>
  19
  20 using std::string;
  21
  22
  23 void TextCursor::setSelection()
  24 {
  25         if (!selection.set()) {
  26                 selection.start = selection.cursor;
  27                 selection.end = selection.cursor;
  28         }
  29
  30         selection.set(true);
  31
  32         // and now the whole selection
  33         if (selection.cursor.par() == cursor.par())
  34                 if (selection.cursor.pos() < cursor.pos()) {
  35                         selection.end = cursor;
  36                         selection.start = selection.cursor;
  37                 } else {
  38                         selection.end = selection.cursor;
  39                         selection.start = cursor;
  40                 }
  41         else if (selection.cursor.par() < cursor.par() ||
  42                  (selection.cursor.par() == cursor.par()
  43                   && selection.cursor.pos() < cursor.pos())) {
  44                 selection.end = cursor;
  45                 selection.start = selection.cursor;
  46         }
  47         else {
  48                 selection.end = selection.cursor;
  49                 selection.start = cursor;
  50         }
  51
  52         // a selection with no contents is not a selection
  53         if (selection.start.par() == selection.end.par() &&
  54             selection.start.pos() == selection.end.pos())
  55         {
  56                 selection.set(false);
  57         }
  58 }
  59
  60
  61 void TextCursor::clearSelection()
  62 {
  63         selection.set(false);
  64         selection.mark(false);
  65         selection.end    = cursor;
  66         selection.start  = cursor;
  67         selection.cursor = cursor;
  68 }
  69