source/panel.cpp

   1 /* $Id$
   2
   3 This file is part of libmspgltk
   4 Copyright © 2007-2009  Mikko Rasa, Mikkosoft Productions
   5 Distributed under the LGPL
   6 */
   7
   8 #include <algorithm>
   9 #include <msp/core/refptr.h>
  10 #include "button.h"
  11 #include "dropdown.h"
  12 #include "entry.h"
  13 #include "hslider.h"
  14 #include "indicator.h"
  15 #include "label.h"
  16 #include "list.h"
  17 #include "panel.h"
  18 #include "part.h"
  19 #include "table.h"
  20 #include "toggle.h"
  21 #include "vslider.h"
  22
  23 using namespace std;
  24
  25 namespace Msp {
  26 namespace GLtk {
  27
  28 Panel::Panel(const Resources &r):
  29         Widget(r),
  30         Container(r),
  31         pointer_focus(0),
  32         pointer_grabbed(false),
  33         input_focus(0)
  34 {
  35         update_style();
  36 }
  37
  38 void Panel::raise(Widget &wdg)
  39 {
  40         for(list<Container::Child *>::iterator i=children.begin(); i!=children.end(); ++i)
  41                 if((*i)->widget==&wdg)
  42                 {
  43                         children.splice(children.end(), children, i);
  44                         return;
  45                 }
  46
  47         throw InvalidState("That Widget is not in this Panel");
  48 }
  49
  50 Widget *Panel::get_final_input_focus() const
  51 {
  52         if(Panel *panel = dynamic_cast<Panel *>(input_focus))
  53         {
  54                 Widget *focus = panel->get_final_input_focus();
  55                 if(focus)
  56                         return focus;
  57         }
  58         return input_focus;
  59 }
  60
  61 void Panel::button_press(int x, int y, unsigned btn)
  62 {
  63         if(pointer_grabbed)
  64         {
  65                 const Geometry &cgeom = pointer_focus->get_geometry();
  66                 pointer_focus->button_press(x-cgeom.x, y-cgeom.y, btn);
  67         }
  68         else
  69         {
  70                 if(Widget *wdg = get_child_at(x, y))
  71                 {
  72                         set_pointer_focus(wdg);
  73                         if(wdg->is_focusable())
  74                                 set_input_focus(wdg);
  75                 }
  76                 Container::button_press(x, y, btn);
  77         }
  78 }
  79
  80 void Panel::button_release(int x, int y, unsigned btn)
  81 {
  82         if(pointer_grabbed)
  83         {
  84                 const Geometry &cgeom = pointer_focus->get_geometry();
  85                 pointer_focus->button_release(x-cgeom.x, y-cgeom.y, btn);
  86         }
  87         else
  88                 Container::button_release(x, y, btn);
  89 }
  90
  91 void Panel::pointer_motion(int x, int y)
  92 {
  93         if(pointer_grabbed)
  94         {
  95                 const Geometry &cgeom = pointer_focus->get_geometry();
  96                 pointer_focus->pointer_motion(x-cgeom.x, y-cgeom.y);
  97         }
  98         else
  99         {
 100                 set_pointer_focus(get_child_at(x, y));
 101                 Container::pointer_motion(x, y);
 102         }
 103 }
 104
 105 void Panel::pointer_leave()
 106 {
 107         Container::pointer_leave();
 108         set_pointer_focus(0);
 109 }
 110
 111 void Panel::key_press(unsigned key, unsigned mod, wchar_t ch)
 112 {
 113         if(input_focus)
 114                 input_focus->key_press(key, mod, ch);
 115 }
 116
 117 void Panel::key_release(unsigned key, unsigned mod)
 118 {
 119         if(input_focus)
 120                 input_focus->key_release(key, mod);
 121 }
 122
 123 void Panel::focus_out()
 124 {
 125         set_input_focus(0);
 126 }
 127
 128 void Panel::render_special(const Part &part) const
 129 {
 130         if(part.get_name()=="children")
 131         {
 132                 for(list<Container::Child *>::const_iterator i=children.begin(); i!=children.end(); ++i)
 133                         if((*i)->widget->is_visible())
 134                                 (*i)->widget->render();
 135         }
 136 }
 137
 138 Panel::Child *Panel::create_child(Widget *wdg)
 139 {
 140         return new Child(*this, wdg);
 141 }
 142
 143 void Panel::set_pointer_focus(Widget *wdg)
 144 {
 145         if(wdg!=pointer_focus)
 146         {
 147                 if(pointer_focus)
 148                         pointer_focus->pointer_leave();
 149
 150                 pointer_focus = wdg;
 151
 152                 if(pointer_focus)
 153                         pointer_focus->pointer_enter();
 154         }
 155 }
 156
 157 void Panel::set_input_focus(Widget *wdg)
 158 {
 159         if(wdg!=input_focus)
 160         {
 161                 if(input_focus)
 162                         input_focus->focus_out();
 163
 164                 input_focus = wdg;
 165
 166                 if(input_focus)
 167                 {
 168                         raise(*wdg);
 169                         input_focus->focus_in();
 170                 }
 171         }
 172 }
 173
 174
 175 Panel::Loader::Loader(Panel &p, map<string, Widget *> &m):
 176         Widget::Loader(p),
 177         pnl(p),
 178         wdg_map(m)
 179 {
 180         add("button",    &Loader::child<Button>);
 181         add("dropdown",  &Loader::child<Dropdown>);
 182         add("entry",     &Loader::child<Entry>);
 183         add("hslider",   &Loader::child<HSlider>);
 184         add("indicator", &Loader::child<Indicator>);
 185         add("label",     &Loader::child<Label>);
 186         add("list",      &Loader::child<List>);
 187         add("panel",     &Loader::panel);
 188         add("table",     &Loader::child<Table>);
 189         add("toggle",    &Loader::child<Toggle>);
 190         add("vslider",   &Loader::child<VSlider>);
 191 }
 192
 193 template<typename T>
 194 void Panel::Loader::child(const string &n)
 195 {
 196         RefPtr<T> chl = new T(pnl.res);
 197         load_sub(*chl);
 198         pnl.add(*chl.get());
 199         wdg_map[n] = chl.release();
 200 }
 201
 202 void Panel::Loader::panel(const string &n)
 203 {
 204         RefPtr<Panel> p = new Panel(pnl.res);
 205         load_sub(*p, wdg_map);
 206         pnl.add(*p.get());
 207         wdg_map[n] = p.release();
 208 }
 209
 210
 211 Panel::Child::Child(Panel &p, Widget *w):
 212         Container::Child(p, w)
 213 {
 214         widget->signal_visibility_changed.connect(sigc::mem_fun(this, &Child::visibility_changed));
 215         widget->signal_request_focus.connect(sigc::mem_fun(this, &Child::request_focus));
 216         widget->signal_grab_pointer.connect(sigc::mem_fun(this, &Child::grab_pointer));
 217         widget->signal_ungrab_pointer.connect(sigc::mem_fun(this, &Child::ungrab_pointer));
 218 }
 219
 220 Panel::Child::~Child()
 221 {
 222         visibility_changed(false);
 223 }
 224
 225 void Panel::Child::visibility_changed(bool v)
 226 {
 227         if(!v)
 228         {
 229                 Panel &panel = static_cast<Panel &>(container);
 230                 if(widget==panel.pointer_focus)
 231                         panel.set_pointer_focus(0);
 232                 if(widget==panel.input_focus)
 233                         panel.set_input_focus(0);
 234         }
 235 }
 236
 237 void Panel::Child::request_focus()
 238 {
 239         Panel &panel = static_cast<Panel &>(container);
 240         panel.set_input_focus(widget);
 241         if(panel.parent && panel.visible)
 242                 panel.set_focus();
 243 }
 244
 245 void Panel::Child::grab_pointer()
 246 {
 247         Panel &panel = static_cast<Panel &>(container);
 248         if(!panel.pointer_grabbed)
 249         {
 250                 panel.set_pointer_focus(widget);
 251                 panel.pointer_grabbed = true;
 252                 panel.signal_grab_pointer.emit();
 253         }
 254 }
 255
 256 void Panel::Child::ungrab_pointer()
 257 {
 258         Panel &panel = static_cast<Panel &>(container);
 259         if(panel.pointer_grabbed && panel.pointer_focus==widget)
 260         {
 261                 // XXX Should set to the widget under pointer
 262                 panel.set_pointer_focus(0);
 263                 panel.pointer_grabbed = false;
 264                 panel.signal_ungrab_pointer.emit();
 265         }
 266 }
 267
 268 } // namespace GLtk
 269 } // namespace Msp