source/panel.cpp

   1 #include <algorithm>
   2 #include <msp/core/refptr.h>
   3 #include "button.h"
   4 #include "dropdown.h"
   5 #include "entry.h"
   6 #include "hslider.h"
   7 #include "indicator.h"
   8 #include "label.h"
   9 #include "layout.h"
  10 #include "list.h"
  11 #include "panel.h"
  12 #include "part.h"
  13 #include "table.h"
  14 #include "toggle.h"
  15 #include "vslider.h"
  16
  17 using namespace std;
  18
  19 namespace Msp {
  20 namespace GLtk {
  21
  22 Panel::Panel():
  23         layout(0),
  24         pointer_focus(0),
  25         pointer_grabbed(false),
  26         input_focus(0)
  27 { }
  28
  29 Panel::~Panel()
  30 {
  31         delete layout;
  32         layout = 0;
  33 }
  34
  35 void Panel::set_layout(Layout *l)
  36 {
  37         l->set_container(*this);
  38         delete layout;
  39         layout = l;
  40 }
  41
  42 Panel::Child *Panel::create_child(Widget *wdg)
  43 {
  44         return new Child(*this, wdg);
  45 }
  46
  47 void Panel::raise(Widget &wdg)
  48 {
  49         for(list<Container::Child *>::iterator i=children.begin(); i!=children.end(); ++i)
  50                 if((*i)->widget==&wdg)
  51                 {
  52                         children.splice(children.end(), children, i);
  53                         return;
  54                 }
  55
  56         throw InvalidState("That Widget is not in this Panel");
  57 }
  58
  59 Widget *Panel::get_final_input_focus() const
  60 {
  61         if(Panel *panel = dynamic_cast<Panel *>(input_focus))
  62         {
  63                 Widget *focus = panel->get_final_input_focus();
  64                 if(focus)
  65                         return focus;
  66         }
  67         return input_focus;
  68 }
  69
  70 void Panel::render_special(const Part &part) const
  71 {
  72         if(part.get_name()=="children")
  73         {
  74                 for(list<Container::Child *>::const_iterator i=children.begin(); i!=children.end(); ++i)
  75                         if((*i)->widget->is_visible())
  76                                 (*i)->widget->render();
  77         }
  78 }
  79
  80 void Panel::button_press(int x, int y, unsigned btn)
  81 {
  82         if(pointer_grabbed)
  83         {
  84                 const Geometry &cgeom = pointer_focus->get_geometry();
  85                 pointer_focus->button_press(x-cgeom.x, y-cgeom.y, btn);
  86         }
  87         else
  88         {
  89                 if(Widget *wdg = get_child_at(x, y))
  90                 {
  91                         set_pointer_focus(wdg);
  92                         if(wdg->is_focusable())
  93                                 set_input_focus(wdg);
  94                 }
  95                 Container::button_press(x, y, btn);
  96         }
  97 }
  98
  99 void Panel::button_release(int x, int y, unsigned btn)
 100 {
 101         if(pointer_grabbed)
 102         {
 103                 const Geometry &cgeom = pointer_focus->get_geometry();
 104                 pointer_focus->button_release(x-cgeom.x, y-cgeom.y, btn);
 105         }
 106         else
 107                 Container::button_release(x, y, btn);
 108 }
 109
 110 void Panel::pointer_motion(int x, int y)
 111 {
 112         if(pointer_grabbed)
 113         {
 114                 const Geometry &cgeom = pointer_focus->get_geometry();
 115                 pointer_focus->pointer_motion(x-cgeom.x, y-cgeom.y);
 116         }
 117         else
 118         {
 119                 set_pointer_focus(get_child_at(x, y));
 120                 Container::pointer_motion(x, y);
 121         }
 122 }
 123
 124 void Panel::pointer_leave()
 125 {
 126         Container::pointer_leave();
 127         set_pointer_focus(0);
 128 }
 129
 130 void Panel::key_press(unsigned key, unsigned mod, wchar_t ch)
 131 {
 132         if(input_focus)
 133                 input_focus->key_press(key, mod, ch);
 134 }
 135
 136 void Panel::key_release(unsigned key, unsigned mod)
 137 {
 138         if(input_focus)
 139                 input_focus->key_release(key, mod);
 140 }
 141
 142 void Panel::focus_out()
 143 {
 144         set_input_focus(0);
 145         Widget::focus_out();
 146 }
 147
 148 void Panel::on_child_added(Widget &wdg)
 149 {
 150         if(layout)
 151                 layout->add_widget(wdg);
 152 }
 153
 154 void Panel::on_child_removed(Widget &wdg)
 155 {
 156         if(layout)
 157                 layout->remove_widget(wdg);
 158 }
 159
 160 void Panel::set_pointer_focus(Widget *wdg)
 161 {
 162         if(wdg!=pointer_focus)
 163         {
 164                 if(pointer_focus)
 165                         pointer_focus->pointer_leave();
 166
 167                 pointer_focus = wdg;
 168
 169                 if(pointer_focus)
 170                         pointer_focus->pointer_enter();
 171         }
 172 }
 173
 174 void Panel::set_input_focus(Widget *wdg)
 175 {
 176         if(wdg!=input_focus)
 177         {
 178                 if(input_focus)
 179                         input_focus->focus_out();
 180
 181                 input_focus = wdg;
 182
 183                 if(input_focus)
 184                 {
 185                         raise(*wdg);
 186                         input_focus->focus_in();
 187                 }
 188         }
 189 }
 190
 191
 192 Panel::Loader::Loader(Panel &p, map<string, Widget *> &m):
 193         Widget::Loader(p),
 194         pnl(p),
 195         wdg_map(m)
 196 {
 197         add("button",    &Loader::child<Button>);
 198         add("dropdown",  &Loader::child<Dropdown>);
 199         add("entry",     &Loader::child<Entry>);
 200         add("hslider",   &Loader::child<HSlider>);
 201         add("indicator", &Loader::child<Indicator>);
 202         add("label",     &Loader::child<Label>);
 203         add("list",      &Loader::child<List>);
 204         add("panel",     &Loader::panel);
 205         add("table",     &Loader::child<Table>);
 206         add("toggle",    &Loader::child<Toggle>);
 207         add("vslider",   &Loader::child<VSlider>);
 208 }
 209
 210 template<typename T>
 211 void Panel::Loader::child(const string &n)
 212 {
 213         RefPtr<T> chl = new T();
 214         load_sub(*chl);
 215         pnl.add(*chl.get());
 216         wdg_map[n] = chl.release();
 217 }
 218
 219 void Panel::Loader::panel(const string &n)
 220 {
 221         RefPtr<Panel> p = new Panel();
 222         load_sub(*p, wdg_map);
 223         pnl.add(*p.get());
 224         wdg_map[n] = p.release();
 225 }
 226
 227
 228 Panel::Child::Child(Panel &p, Widget *w):
 229         Container::Child(p, w)
 230 {
 231         widget->signal_visibility_changed.connect(sigc::mem_fun(this, &Child::visibility_changed));
 232         widget->signal_request_focus.connect(sigc::mem_fun(this, &Child::request_focus));
 233         widget->signal_grab_pointer.connect(sigc::mem_fun(this, &Child::grab_pointer));
 234         widget->signal_ungrab_pointer.connect(sigc::mem_fun(this, &Child::ungrab_pointer));
 235 }
 236
 237 Panel::Child::~Child()
 238 {
 239         visibility_changed(false);
 240 }
 241
 242 void Panel::Child::visibility_changed(bool v)
 243 {
 244         if(!v)
 245         {
 246                 Panel &panel = static_cast<Panel &>(container);
 247                 if(widget==panel.pointer_focus)
 248                         panel.set_pointer_focus(0);
 249                 if(widget==panel.input_focus)
 250                         panel.set_input_focus(0);
 251         }
 252 }
 253
 254 void Panel::Child::autosize_changed()
 255 {
 256         Panel &panel = static_cast<Panel &>(container);
 257         if(panel.layout)
 258                 panel.layout->update();
 259 }
 260
 261 void Panel::Child::request_focus()
 262 {
 263         Panel &panel = static_cast<Panel &>(container);
 264         panel.set_input_focus(widget);
 265         if(panel.parent && panel.visible)
 266                 panel.set_focus();
 267 }
 268
 269 void Panel::Child::grab_pointer()
 270 {
 271         Panel &panel = static_cast<Panel &>(container);
 272         if(!panel.pointer_grabbed)
 273         {
 274                 panel.set_pointer_focus(widget);
 275                 panel.pointer_grabbed = true;
 276                 panel.signal_grab_pointer.emit();
 277         }
 278 }
 279
 280 void Panel::Child::ungrab_pointer()
 281 {
 282         Panel &panel = static_cast<Panel &>(container);
 283         if(panel.pointer_grabbed && panel.pointer_focus==widget)
 284         {
 285                 // XXX Should set to the widget under pointer
 286                 panel.set_pointer_focus(0);
 287                 panel.pointer_grabbed = false;
 288                 panel.signal_ungrab_pointer.emit();
 289         }
 290 }
 291
 292 } // namespace GLtk
 293 } // namespace Msp