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 hierarchy_error("widget not in 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)
 131 {
 132         if(input_focus)
 133                 input_focus->key_press(key, mod);
 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::character(wchar_t ch)
 143 {
 144         if(input_focus)
 145                 input_focus->character(ch);
 146 }
 147
 148 void Panel::focus_out()
 149 {
 150         set_input_focus(0);
 151         Widget::focus_out();
 152 }
 153
 154 void Panel::on_geometry_change()
 155 {
 156         if(layout)
 157                 layout->update();
 158 }
 159
 160 void Panel::on_child_added(Widget &wdg)
 161 {
 162         if(layout)
 163                 layout->add_widget(wdg);
 164 }
 165
 166 void Panel::on_child_removed(Widget &wdg)
 167 {
 168         if(layout)
 169                 layout->remove_widget(wdg);
 170 }
 171
 172 void Panel::set_pointer_focus(Widget *wdg)
 173 {
 174         if(wdg!=pointer_focus)
 175         {
 176                 if(pointer_focus)
 177                         pointer_focus->pointer_leave();
 178
 179                 pointer_focus = wdg;
 180
 181                 if(pointer_focus)
 182                         pointer_focus->pointer_enter();
 183         }
 184 }
 185
 186 void Panel::set_input_focus(Widget *wdg)
 187 {
 188         if(wdg!=input_focus)
 189         {
 190                 if(input_focus)
 191                         input_focus->focus_out();
 192
 193                 input_focus = wdg;
 194
 195                 if(input_focus)
 196                 {
 197                         raise(*wdg);
 198                         input_focus->focus_in();
 199                 }
 200         }
 201 }
 202
 203
 204 Panel::Loader::Loader(Panel &p, map<string, Widget *> &m):
 205         Widget::Loader(p),
 206         pnl(p),
 207         wdg_map(m)
 208 {
 209         add("button",    &Loader::child<Button>);
 210         add("dropdown",  &Loader::child<Dropdown>);
 211         add("entry",     &Loader::child<Entry>);
 212         add("hslider",   &Loader::child<HSlider>);
 213         add("indicator", &Loader::child<Indicator>);
 214         add("label",     &Loader::child<Label>);
 215         add("list",      &Loader::child<List>);
 216         add("panel",     &Loader::panel);
 217         add("table",     &Loader::child<Table>);
 218         add("toggle",    &Loader::child<Toggle>);
 219         add("vslider",   &Loader::child<VSlider>);
 220 }
 221
 222 template<typename T>
 223 void Panel::Loader::child(const string &n)
 224 {
 225         RefPtr<T> chl = new T();
 226         load_sub(*chl);
 227         pnl.add(*chl.get());
 228         wdg_map[n] = chl.release();
 229 }
 230
 231 void Panel::Loader::panel(const string &n)
 232 {
 233         RefPtr<Panel> p = new Panel();
 234         load_sub(*p, wdg_map);
 235         pnl.add(*p.get());
 236         wdg_map[n] = p.release();
 237 }
 238
 239
 240 Panel::Child::Child(Panel &p, Widget *w):
 241         Container::Child(p, w)
 242 {
 243         widget->signal_visibility_changed.connect(sigc::mem_fun(this, &Child::visibility_changed));
 244         widget->signal_request_focus.connect(sigc::mem_fun(this, &Child::request_focus));
 245         widget->signal_grab_pointer.connect(sigc::mem_fun(this, &Child::grab_pointer));
 246         widget->signal_ungrab_pointer.connect(sigc::mem_fun(this, &Child::ungrab_pointer));
 247 }
 248
 249 Panel::Child::~Child()
 250 {
 251         visibility_changed(false);
 252 }
 253
 254 void Panel::Child::visibility_changed(bool v)
 255 {
 256         if(!v)
 257         {
 258                 Panel &panel = static_cast<Panel &>(container);
 259                 if(widget==panel.pointer_focus)
 260                         panel.set_pointer_focus(0);
 261                 if(widget==panel.input_focus)
 262                         panel.set_input_focus(0);
 263         }
 264 }
 265
 266 void Panel::Child::autosize_changed()
 267 {
 268         Panel &panel = static_cast<Panel &>(container);
 269         if(panel.layout)
 270                 panel.layout->update();
 271 }
 272
 273 void Panel::Child::request_focus()
 274 {
 275         Panel &panel = static_cast<Panel &>(container);
 276         panel.set_input_focus(widget);
 277         if(panel.parent && panel.visible)
 278                 panel.set_focus();
 279 }
 280
 281 void Panel::Child::grab_pointer()
 282 {
 283         Panel &panel = static_cast<Panel &>(container);
 284         if(!panel.pointer_grabbed)
 285         {
 286                 panel.set_pointer_focus(widget);
 287                 panel.pointer_grabbed = true;
 288                 panel.signal_grab_pointer.emit();
 289         }
 290 }
 291
 292 void Panel::Child::ungrab_pointer()
 293 {
 294         Panel &panel = static_cast<Panel &>(container);
 295         if(panel.pointer_grabbed && panel.pointer_focus==widget)
 296         {
 297                 // XXX Should set to the widget under pointer
 298                 panel.set_pointer_focus(0);
 299                 panel.pointer_grabbed = false;
 300                 panel.signal_ungrab_pointer.emit();
 301         }
 302 }
 303
 304 } // namespace GLtk
 305 } // namespace Msp