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
  17 #include <string>
  18
  19 using std::string;
  20
  21
  22 void TextCursor::setSelection()
  23 {
  24         if (!selection.set()) {
  25                 selection.start = selection.cursor;
  26                 selection.end = selection.cursor;
  27         }
  28
  29         selection.set(true);
  30
  31         // and now the whole selection
  32         if (selection.cursor.par() == cursor.par())
  33                 if (selection.cursor.pos() < cursor.pos()) {
  34                         selection.end = cursor;
  35                         selection.start = selection.cursor;
  36                 } else {
  37                         selection.end = selection.cursor;
  38                         selection.start = cursor;
  39                 }
  40         else if (selection.cursor.y() < cursor.y() ||
  41                  (selection.cursor.y() == cursor.y()
  42                   && selection.cursor.x() < cursor.x())) {
  43                 selection.end = cursor;
  44                 selection.start = selection.cursor;
  45         }
  46         else {
  47                 selection.end = selection.cursor;
  48                 selection.start = cursor;
  49         }
  50
  51         // a selection with no contents is not a selection
  52         if (selection.start.par() == selection.end.par() &&
  53             selection.start.pos() == selection.end.pos())
  54         {
  55                 selection.set(false);
  56         }
  57 }
  58
  59
  60 void TextCursor::clearSelection()
  61 {
  62         selection.set(false);
  63         selection.mark(false);
  64         selection.end    = cursor;
  65         selection.start  = cursor;
  66         selection.cursor = cursor;
  67 }
  68