source/dropdown.cpp

   1 /* $Id$
   2
   3 This file is part of libmspgltk
   4 Copyright © 2007  Mikko Rasa, Mikkosoft Productions
   5 Distributed under the LGPL
   6 */
   7
   8 #include "dropdown.h"
   9 #include "list.h"
  10 #include "panel.h"
  11 #include "part.h"
  12
  13 using namespace std;
  14
  15 namespace Msp {
  16 namespace GLtk {
  17
  18 Dropdown::Dropdown(const Resources &r):
  19         Widget(r),
  20         list(new List(res)),
  21         dropped(false),
  22         list_active(false)
  23 {
  24         list->signal_item_selected.connect(sigc::mem_fun(this, &Dropdown::list_item_selected));
  25
  26         update_style();
  27 }
  28
  29 Dropdown::~Dropdown()
  30 {
  31         delete list;
  32 }
  33
  34 void Dropdown::append(const string &item)
  35 {
  36         list->append(item);
  37 }
  38
  39 void Dropdown::button_press(int x, int y, unsigned btn)
  40 {
  41         if(list->get_geometry().is_inside(x, y))
  42         {
  43                 const Geometry &lgeom=list->get_geometry();
  44                 list->button_press(x-lgeom.x, y-lgeom.y, btn);
  45                 list_active=true;
  46         }
  47         else if(dropped)
  48         {
  49                 dropped=false;
  50                 state&=~ACTIVE;
  51                 parent->ungrab_pointer(*this);
  52         }
  53         else if(btn==1)
  54         {
  55                 dropped=true;
  56                 state|=ACTIVE;
  57
  58                 if(parent)
  59                 {
  60                         parent->raise(*this);
  61                         parent->grab_pointer(*this);
  62                 }
  63         }
  64 }
  65
  66 void Dropdown::button_release(int x, int y, unsigned btn)
  67 {
  68         if(list_active)
  69         {
  70                 const Geometry &lgeom=list->get_geometry();
  71                 list->button_release(x-lgeom.x, y-lgeom.y, btn);
  72                 list_active=false;
  73         }
  74 }
  75
  76 void Dropdown::pointer_motion(int x, int y)
  77 {
  78         if(list_active)
  79         {
  80                 const Geometry &lgeom=list->get_geometry();
  81                 list->pointer_motion(x-lgeom.x, y-lgeom.y);
  82         }
  83 }
  84
  85 void Dropdown::render_special(const Part &part) const
  86 {
  87         if(part.get_name()=="text")
  88                 render_text(part, text);
  89         else if(part.get_name()=="list" && dropped)
  90                 list->render();
  91 }
  92
  93 void Dropdown::on_geometry_change()
  94 {
  95         list->set_geometry(Geometry(0, -100, geom.w, 100));
  96 }
  97
  98 void Dropdown::list_item_selected(unsigned index, const std::string &item)
  99 {
 100         text=item;
 101
 102         list_active=false;
 103         dropped=false;
 104         state&=~ACTIVE;
 105         if(parent)
 106                 parent->ungrab_pointer(*this);
 107
 108         signal_item_selected.emit(index, item);
 109 }
 110
 111
 112 Dropdown::Loader::Loader(Dropdown &d):
 113         Widget::Loader(d)
 114 {
 115         add("item", &Loader::item);
 116 }
 117
 118 void Dropdown::Loader::item(const string &str)
 119 {
 120         static_cast<Dropdown &>(wdg).append(str);
 121 }
 122
 123 } // namespace GLtk
 124 } // namespace Msp