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 #include <string>
  17
  18 using std::string;
  19
  20
  21 void TextCursor::setSelection()
  22 {
  23         if (!selection.set()) {
  24                 selection.start = selection.cursor;
  25                 selection.end = selection.cursor;
  26         }
  27
  28         selection.set(true);
  29
  30         // and now the whole selection
  31         if (selection.cursor.par() == cursor.par())
  32                 if (selection.cursor.pos() < cursor.pos()) {
  33                         selection.end = cursor;
  34                         selection.start = selection.cursor;
  35                 } else {
  36                         selection.end = selection.cursor;
  37                         selection.start = cursor;
  38                 }
  39         else if (selection.cursor.y() < cursor.y() ||
  40                  (selection.cursor.y() == cursor.y()
  41                   && selection.cursor.x() < cursor.x())) {
  42                 selection.end = cursor;
  43                 selection.start = selection.cursor;
  44         }
  45         else {
  46                 selection.end = selection.cursor;
  47                 selection.start = cursor;
  48         }
  49
  50         // a selection with no contents is not a selection
  51         if (selection.start.par() == selection.end.par() &&
  52             selection.start.pos() == selection.end.pos())
  53         {
  54                 selection.set(false);
  55         }
  56 }
  57
  58
  59 void TextCursor::clearSelection()
  60 {
  61         selection.set(false);
  62         selection.mark(false);
  63         selection.end    = cursor;
  64         selection.start  = cursor;
  65         selection.cursor = cursor;
  66 }
  67
  68
  69 string const TextCursor::selectionAsString(Buffer const & buffer,
  70                                         bool label) const
  71 {
  72         if (!selection.set())
  73                 return string();
  74
  75         // should be const ...
  76         ParagraphList::iterator startpit = selection.start.par();
  77         ParagraphList::iterator endpit = selection.end.par();
  78         size_t const startpos = selection.start.pos();
  79         size_t const endpos = selection.end.pos();
  80
  81         if (startpit == endpit)
  82                 return startpit->asString(buffer, startpos, endpos, label);
  83
  84         // First paragraph in selection
  85         string result =
  86                 startpit->asString(buffer, startpos, startpit->size(), label) + "\n\n";
  87
  88         // The paragraphs in between (if any)
  89         ParagraphList::iterator pit = startpit;
  90         for (++pit; pit != endpit; ++pit)
  91                 result += pit->asString(buffer, 0, pit->size(), label) + "\n\n";
  92
  93         // Last paragraph in selection
  94         result += endpit->asString(buffer, 0, endpos, label);
  95
  96         return result;
  97 }