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         list_active(false)
  22 {
  23         list->signal_item_selected.connect(sigc::mem_fun(this, &Dropdown::list_item_selected));
  24
  25         update_style();
  26 }
  27
  28 Dropdown::~Dropdown()
  29 {
  30         delete list;
  31 }
  32
  33 void Dropdown::append(const string &item)
  34 {
  35         list->append(item);
  36 }
  37
  38 void Dropdown::button_press(int x, int y, unsigned btn)
  39 {
  40         if(list->get_geometry().is_inside(x, y))
  41         {
  42                 const Geometry &lgeom=list->get_geometry();
  43                 list->button_press(x-lgeom.x, y-lgeom.y, btn);
  44                 list_active=true;
  45         }
  46         else if(state==ACTIVE)
  47         {
  48                 state=HOVER;
  49                 parent->ungrab_pointer(*this);
  50         }
  51         else if(btn==1)
  52         {
  53                 state=ACTIVE;
  54
  55                 if(parent)
  56                 {
  57                         parent->raise(*this);
  58                         parent->grab_pointer(*this);
  59                 }
  60         }
  61 }
  62
  63 void Dropdown::button_release(int x, int y, unsigned btn)
  64 {
  65         if(list_active)
  66         {
  67                 const Geometry &lgeom=list->get_geometry();
  68                 list->button_release(x-lgeom.x, y-lgeom.y, btn);
  69                 list_active=false;
  70         }
  71 }
  72
  73 void Dropdown::pointer_motion(int x, int y)
  74 {
  75         if(list_active)
  76         {
  77                 const Geometry &lgeom=list->get_geometry();
  78                 list->pointer_motion(x-lgeom.x, y-lgeom.y);
  79         }
  80 }
  81
  82 void Dropdown::pointer_enter()
  83 {
  84         if(state==NORMAL)
  85                 state=HOVER;
  86 }
  87
  88 void Dropdown::pointer_leave()
  89 {
  90         if(state==HOVER)
  91                 state=NORMAL;
  92 }
  93
  94 void Dropdown::render_special(const Part &part) const
  95 {
  96         if(part.get_name()=="text")
  97                 render_text(part, text);
  98         else if(part.get_name()=="list" && state==ACTIVE)
  99                 list->render();
 100 }
 101
 102 void Dropdown::on_geometry_change()
 103 {
 104         list->set_geometry(Geometry(0, -100, geom.w, 100));
 105 }
 106
 107 void Dropdown::list_item_selected(unsigned index, const std::string &item)
 108 {
 109         text=item;
 110
 111         list_active=false;
 112         state=NORMAL;
 113         if(parent)
 114                 parent->ungrab_pointer(*this);
 115
 116         signal_item_selected.emit(index, item);
 117 }
 118
 119 } // namespace GLtk
 120 } // namespace Msp