source/container.cpp

   1 /* $Id$
   2
   3 This file is part of libmspgltk
   4 Copyright © 2009  Mikko Rasa, Mikkosoft Productions
   5 Distributed under the LGPL
   6 */
   7
   8 #include "container.h"
   9
  10 using namespace std;
  11
  12 namespace Msp {
  13 namespace GLtk {
  14
  15 Container::Container(const Resources &r):
  16         Widget(r),
  17         click_focus(0),
  18         click_button(0)
  19 { }
  20
  21 Container::~Container()
  22 {
  23         while(!children.empty())
  24                 delete children.front()->widget;
  25 }
  26
  27 void Container::add(Widget &wdg)
  28 {
  29         set_parent(wdg, this);
  30         children.push_back(create_child(&wdg));
  31 }
  32
  33 void Container::remove(Widget &wdg)
  34 {
  35         for(list<Child *>::iterator i=children.begin(); i!=children.end(); ++i)
  36                 if((*i)->widget==&wdg)
  37                 {
  38                         set_parent(wdg, 0);
  39                         delete *i;
  40                         children.erase(i);
  41                         return;
  42                 }
  43
  44         throw InvalidState("That Widget is not in this Container");
  45 }
  46
  47 list<Widget *> Container::get_children() const
  48 {
  49         list<Widget *> result;
  50         for(list<Child *>::const_iterator i=children.begin(); i!=children.end(); ++i)
  51                 result.push_back((*i)->widget);
  52         return result;
  53 }
  54
  55 Widget *Container::get_child_at(int x, int y)
  56 {
  57         for(list<Child *>::iterator i=children.end(); i!=children.begin();)
  58                 if((*--i)->widget->is_visible() && (*i)->widget->get_geometry().is_inside(x, y))
  59                         return (*i)->widget;
  60
  61         return 0;
  62 }
  63
  64 Widget *Container::get_descendant_at(int x, int y)
  65 {
  66         Widget *wdg=get_child_at(x, y);
  67         if(Container *cont=dynamic_cast<Container *>(wdg))
  68         {
  69                 const Geometry &cgeom=wdg->get_geometry();
  70                 return cont->get_descendant_at(x-cgeom.x, y-cgeom.y);
  71         }
  72         return wdg;
  73 }
  74
  75 void Container::button_press(int x, int y, unsigned btn)
  76 {
  77         if(click_focus)
  78         {
  79                 const Geometry &cgeom=click_focus->get_geometry();
  80                 click_focus->button_press(x-cgeom.x, y-cgeom.y, btn);
  81         }
  82         else
  83         {
  84                 if(Widget *wdg=get_child_at(x, y))
  85                 {
  86                         click_focus=wdg;
  87                         click_button=btn;
  88
  89                         const Geometry &cgeom=wdg->get_geometry();
  90                         wdg->button_press(x-cgeom.x, y-cgeom.y, btn);
  91                 }
  92         }
  93 }
  94
  95 void Container::button_release(int x, int y, unsigned btn)
  96 {
  97         if(click_focus)
  98         {
  99                 Widget *wdg=click_focus;
 100
 101                 if(btn==click_button)
 102                         click_focus=0;
 103
 104                 const Geometry &cgeom=wdg->get_geometry();
 105                 wdg->button_release(x-cgeom.x, y-cgeom.y, btn);
 106         }
 107         else
 108         {
 109                 if(Widget *wdg=get_child_at(x, y))
 110                 {
 111                         const Geometry &cgeom=wdg->get_geometry();
 112                         wdg->button_release(x-cgeom.x, y-cgeom.y, btn);
 113                 }
 114         }
 115 }
 116
 117 void Container::pointer_motion(int x, int y)
 118 {
 119         if(click_focus)
 120         {
 121                 const Geometry &cgeom=click_focus->get_geometry();
 122                 click_focus->pointer_motion(x-cgeom.x, y-cgeom.y);
 123         }
 124         else
 125         {
 126                 Widget *wdg=get_child_at(x, y);
 127                 if(wdg)
 128                 {
 129                         const Geometry &cgeom=wdg->get_geometry();
 130                         wdg->pointer_motion(x-cgeom.x, y-cgeom.y);
 131                 }
 132         }
 133 }
 134
 135 void Container::pointer_leave()
 136 {
 137         Widget::pointer_leave();
 138         click_focus=0;
 139 }
 140
 141 Container::Child *Container::create_child(Widget *wdg)
 142 {
 143         return new Child(*this, wdg);
 144 }
 145
 146
 147 Container::Child::Child(Container &c, Widget *w):
 148         container(c),
 149         widget(w)
 150 {
 151         widget->signal_visibility_changed.connect(sigc::mem_fun(this, &Child::visibility_changed));
 152 }
 153
 154 Container::Child::~Child()
 155 {
 156         if(widget==container.click_focus)
 157                 container.click_focus=0;
 158 }
 159
 160 void Container::Child::visibility_changed(bool v)
 161 {
 162         if(!v && widget==container.click_focus)
 163                 container.click_focus=0;
 164 }
 165
 166 } // namespace GLtk
 167 } // namespace Msp