source/entry.cpp

   1 /* $Id$
   2
   3 This file is part of libmspgltk
   4 Copyright © 2007-2010  Mikko Rasa, Mikkosoft Productions
   5 Distributed under the LGPL
   6 */
   7
   8 #include <msp/gl/matrix.h>
   9 #include <msp/gl/texture.h>
  10 #include <msp/gl/transform.h>
  11 #include <msp/input/keys.h>
  12 #include "entry.h"
  13 #include "graphic.h"
  14 #include "part.h"
  15 #include "style.h"
  16
  17 using namespace std;
  18
  19 namespace Msp {
  20 namespace GLtk {
  21
  22 Entry::Entry(const Resources &r, const string &t):
  23         Widget(r),
  24         text(),
  25         multiline(false),
  26         edit_pos(0)
  27 {
  28         update_style();
  29         set_text(t);
  30 }
  31
  32 void Entry::set_text(const string &t)
  33 {
  34         text=t;
  35         edit_pos=text.size();
  36 }
  37
  38 void Entry::set_multiline(bool m)
  39 {
  40         multiline = m;
  41 }
  42
  43 void Entry::key_press(unsigned key, unsigned, wchar_t ch)
  44 {
  45         if(key==Input::KEY_LEFT)
  46         {
  47                 if(edit_pos>0)
  48                         --edit_pos;
  49         }
  50         else if(key==Input::KEY_RIGHT)
  51         {
  52                 if(edit_pos<text.size())
  53                         ++edit_pos;
  54         }
  55         else if(key==Input::KEY_DOWN && multiline)
  56         {
  57                 unsigned row, col;
  58                 text.offset_to_coords(edit_pos, row, col);
  59                 edit_pos=text.coords_to_offset(row+1, col);
  60         }
  61         else if(key==Input::KEY_UP && multiline)
  62         {
  63                 unsigned row, col;
  64                 text.offset_to_coords(edit_pos, row, col);
  65                 if(row>0)
  66                         edit_pos=text.coords_to_offset(row-1, col);
  67                 else
  68                         edit_pos=0;
  69         }
  70         else if(key==Input::KEY_BACKSPACE)
  71         {
  72                 if(edit_pos>0)
  73                         text.erase(--edit_pos, 1);
  74         }
  75         else if(key==Input::KEY_ENTER)
  76         {
  77                 if(multiline)
  78                         text.insert(edit_pos++, "\n");
  79                 else
  80                         signal_enter.emit();
  81         }
  82         else if(ch>=' ')
  83         {
  84                 text.insert(edit_pos, Codecs::encode<Codecs::Utf8>(Codecs::ustring(1, ch)));
  85                 ++edit_pos;
  86         }
  87 }
  88
  89 void Entry::render_special(const Part &part) const
  90 {
  91         if(part.get_name()=="text")
  92                 text.render(part, geom);
  93         else if(part.get_name()=="cursor")
  94         {
  95                 if(!part.get_graphic(state))
  96                         return;
  97
  98                 unsigned row, col;
  99                 text.offset_to_coords(edit_pos, row, col);
 100
 101                 Geometry rgeom=text.coords_to_geometry(row, col);
 102                 part.get_alignment().apply(rgeom, geom, part.get_margin());
 103
 104                 GL::push_matrix();
 105                 GL::translate(rgeom.x, rgeom.y, 0);
 106                 part.get_graphic(state)->render(part.get_geometry().w, part.get_geometry().h);
 107                 GL::pop_matrix();
 108         }
 109 }
 110
 111 void Entry::on_style_change()
 112 {
 113         text.set_style(style);
 114 }
 115
 116
 117 Entry::Loader::Loader(Entry &ent):
 118         Widget::Loader(ent)
 119 { }
 120
 121 } // namespace GLtk
 122 } // namespace Msp