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
  15 void TextCursor::setSelection()
  16 {
  17         if (!selection.set()) {
  18                 selection.start = selection.cursor;
  19                 selection.end = selection.cursor;
  20         }
  21
  22         selection.set(true);
  23
  24         // and now the whole selection
  25         if (selection.cursor.par() == cursor.par())
  26                 if (selection.cursor.pos() < cursor.pos()) {
  27                         selection.end = cursor;
  28                         selection.start = selection.cursor;
  29                 } else {
  30                         selection.end = selection.cursor;
  31                         selection.start = cursor;
  32                 }
  33         else if (selection.cursor.y() < cursor.y() ||
  34                  (selection.cursor.y() == cursor.y()
  35                   && selection.cursor.x() < cursor.x())) {
  36                 selection.end = cursor;
  37                 selection.start = selection.cursor;
  38         }
  39         else {
  40                 selection.end = selection.cursor;
  41                 selection.start = cursor;
  42         }
  43
  44         // a selection with no contents is not a selection
  45         if (selection.start.par() == selection.end.par() &&
  46             selection.start.pos() == selection.end.pos())
  47         {
  48                 selection.set(false);
  49         }
  50 }
  51
  52
  53 void TextCursor::clearSelection()
  54 {
  55         selection.set(false);
  56         selection.mark(false);
  57         selection.end    = cursor;
  58         selection.start  = cursor;
  59         selection.cursor = cursor;
  60 }
  61
  62
  63 string const TextCursor::selectionAsString(Buffer const & buffer,
  64                                         bool label) const
  65 {
  66         if (!selection.set())
  67                 return string();
  68
  69         // should be const ...
  70         ParagraphList::iterator startpit = selection.start.par();
  71         ParagraphList::iterator endpit = selection.end.par();
  72         size_t const startpos = selection.start.pos();
  73         size_t const endpos = selection.end.pos();
  74
  75         if (startpit == endpit)
  76                 return startpit->asString(buffer, startpos, endpos, label);
  77
  78         // First paragraph in selection
  79         string result =
  80                 startpit->asString(buffer, startpos, startpit->size(), label) + "\n\n";
  81
  82         // The paragraphs in between (if any)
  83         ParagraphList::iterator pit = startpit;
  84         for (++pit; pit != endpit; ++pit)
  85                 result += pit->asString(buffer, 0, pit->size(), label) + "\n\n";
  86
  87         // Last paragraph in selection
  88         result += endpit->asString(buffer, 0, endpos, label);
  89
  90         return result;
  91 }