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
  16
  17 void TextCursor::setSelection()
  18 {
  19         if (!selection.set()) {
  20                 selection.start = selection.cursor;
  21                 selection.end = selection.cursor;
  22         }
  23
  24         selection.set(true);
  25
  26         // and now the whole selection
  27         if (selection.cursor.par() == cursor.par())
  28                 if (selection.cursor.pos() < cursor.pos()) {
  29                         selection.end = cursor;
  30                         selection.start = selection.cursor;
  31                 } else {
  32                         selection.end = selection.cursor;
  33                         selection.start = cursor;
  34                 }
  35         else if (selection.cursor.y() < cursor.y() ||
  36                  (selection.cursor.y() == cursor.y()
  37                   && selection.cursor.x() < cursor.x())) {
  38                 selection.end = cursor;
  39                 selection.start = selection.cursor;
  40         }
  41         else {
  42                 selection.end = selection.cursor;
  43                 selection.start = cursor;
  44         }
  45
  46         // a selection with no contents is not a selection
  47         if (selection.start.par() == selection.end.par() &&
  48             selection.start.pos() == selection.end.pos())
  49         {
  50                 selection.set(false);
  51         }
  52 }
  53
  54
  55 void TextCursor::clearSelection()
  56 {
  57         selection.set(false);
  58         selection.mark(false);
  59         selection.end    = cursor;
  60         selection.start  = cursor;
  61         selection.cursor = cursor;
  62 }
  63
  64
  65 string const TextCursor::selectionAsString(Buffer const & buffer,
  66                                         bool label) const
  67 {
  68         if (!selection.set())
  69                 return string();
  70
  71         // should be const ...
  72         ParagraphList::iterator startpit = selection.start.par();
  73         ParagraphList::iterator endpit = selection.end.par();
  74         size_t const startpos = selection.start.pos();
  75         size_t const endpos = selection.end.pos();
  76
  77         if (startpit == endpit)
  78                 return startpit->asString(buffer, startpos, endpos, label);
  79
  80         // First paragraph in selection
  81         string result =
  82                 startpit->asString(buffer, startpos, startpit->size(), label) + "\n\n";
  83
  84         // The paragraphs in between (if any)
  85         ParagraphList::iterator pit = startpit;
  86         for (++pit; pit != endpit; ++pit)
  87                 result += pit->asString(buffer, 0, pit->size(), label) + "\n\n";
  88
  89         // Last paragraph in selection
  90         result += endpit->asString(buffer, 0, endpos, label);
  91
  92         return result;
  93 }