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 void Panel::autosize()
  43 {
  44         if(layout)
  45                 layout->autosize();
  46 }
  47
  48 Panel::Child *Panel::create_child(Widget *wdg)
  49 {
  50         return new Child(*this, wdg);
  51 }
  52
  53 void Panel::raise(Widget &wdg)
  54 {
  55         for(list<Container::Child *>::iterator i=children.begin(); i!=children.end(); ++i)
  56                 if((*i)->widget==&wdg)
  57                 {
  58                         children.splice(children.end(), children, i);
  59                         return;
  60                 }
  61
  62         throw hierarchy_error("widget not in panel");
  63 }
  64
  65 Widget *Panel::get_final_input_focus() const
  66 {
  67         if(Panel *panel = dynamic_cast<Panel *>(input_focus))
  68         {
  69                 Widget *focus = panel->get_final_input_focus();
  70                 if(focus)
  71                         return focus;
  72         }
  73         return input_focus;
  74 }
  75
  76 void Panel::render_special(const Part &part, GL::Renderer &renderer) const
  77 {
  78         if(part.get_name()=="children")
  79         {
  80                 for(list<Container::Child *>::const_iterator i=children.begin(); i!=children.end(); ++i)
  81                         if((*i)->widget->is_visible())
  82                                 (*i)->widget->render(renderer);
  83         }
  84 }
  85
  86 void Panel::button_press(int x, int y, unsigned btn)
  87 {
  88         if(pointer_grabbed)
  89         {
  90                 const Geometry &cgeom = pointer_focus->get_geometry();
  91                 pointer_focus->button_press(x-cgeom.x, y-cgeom.y, btn);
  92         }
  93         else
  94         {
  95                 if(Widget *wdg = get_child_at(x, y))
  96                 {
  97                         set_pointer_focus(wdg);
  98                         if(wdg->is_focusable())
  99                                 set_input_focus(wdg);
 100                 }
 101                 Container::button_press(x, y, btn);
 102         }
 103 }
 104
 105 void Panel::button_release(int x, int y, unsigned btn)
 106 {
 107         if(pointer_grabbed)
 108         {
 109                 const Geometry &cgeom = pointer_focus->get_geometry();
 110                 pointer_focus->button_release(x-cgeom.x, y-cgeom.y, btn);
 111         }
 112         else
 113                 Container::button_release(x, y, btn);
 114 }
 115
 116 void Panel::pointer_motion(int x, int y)
 117 {
 118         if(pointer_grabbed)
 119         {
 120                 const Geometry &cgeom = pointer_focus->get_geometry();
 121                 pointer_focus->pointer_motion(x-cgeom.x, y-cgeom.y);
 122         }
 123         else
 124         {
 125                 set_pointer_focus(get_child_at(x, y));
 126                 Container::pointer_motion(x, y);
 127         }
 128 }
 129
 130 void Panel::pointer_leave()
 131 {
 132         Container::pointer_leave();
 133         set_pointer_focus(0);
 134 }
 135
 136 void Panel::key_press(unsigned key, unsigned mod)
 137 {
 138         if(input_focus)
 139                 input_focus->key_press(key, mod);
 140 }
 141
 142 void Panel::key_release(unsigned key, unsigned mod)
 143 {
 144         if(input_focus)
 145                 input_focus->key_release(key, mod);
 146 }
 147
 148 void Panel::character(wchar_t ch)
 149 {
 150         if(input_focus)
 151                 input_focus->character(ch);
 152 }
 153
 154 void Panel::focus_out()
 155 {
 156         set_input_focus(0);
 157         Widget::focus_out();
 158 }
 159
 160 void Panel::on_geometry_change()
 161 {
 162         if(layout)
 163                 layout->update();
 164 }
 165
 166 void Panel::on_child_added(Widget &wdg)
 167 {
 168         if(layout)
 169         {
 170                 layout->add_widget(wdg);
 171                 signal_autosize_changed.emit();
 172         }
 173 }
 174
 175 void Panel::on_child_removed(Widget &wdg)
 176 {
 177         if(layout)
 178         {
 179                 layout->remove_widget(wdg);
 180                 signal_autosize_changed.emit();
 181         }
 182 }
 183
 184 void Panel::set_pointer_focus(Widget *wdg)
 185 {
 186         if(wdg!=pointer_focus)
 187         {
 188                 if(pointer_focus)
 189                         pointer_focus->pointer_leave();
 190
 191                 pointer_focus = wdg;
 192
 193                 if(pointer_focus)
 194                         pointer_focus->pointer_enter();
 195         }
 196 }
 197
 198 void Panel::set_input_focus(Widget *wdg)
 199 {
 200         if(wdg!=input_focus)
 201         {
 202                 if(input_focus)
 203                         input_focus->focus_out();
 204
 205                 input_focus = wdg;
 206
 207                 if(input_focus)
 208                 {
 209                         raise(*wdg);
 210                         input_focus->focus_in();
 211                 }
 212         }
 213 }
 214
 215
 216 Panel::Loader::Loader(Panel &p, map<string, Widget *> &m):
 217         Widget::Loader(p),
 218         pnl(p),
 219         wdg_map(m)
 220 {
 221         add("button",    &Loader::child<Button>);
 222         add("dropdown",  &Loader::child<Dropdown>);
 223         add("entry",     &Loader::child<Entry>);
 224         add("hslider",   &Loader::child<HSlider>);
 225         add("indicator", &Loader::child<Indicator>);
 226         add("label",     &Loader::child<Label>);
 227         add("list",      &Loader::child<List>);
 228         add("panel",     &Loader::panel);
 229         add("table",     &Loader::child<Table>);
 230         add("toggle",    &Loader::child<Toggle>);
 231         add("vslider",   &Loader::child<VSlider>);
 232 }
 233
 234 template<typename T>
 235 void Panel::Loader::child(const string &n)
 236 {
 237         RefPtr<T> chl = new T();
 238         load_sub(*chl);
 239         pnl.add(*chl.get());
 240         wdg_map[n] = chl.release();
 241 }
 242
 243 void Panel::Loader::panel(const string &n)
 244 {
 245         RefPtr<Panel> p = new Panel();
 246         load_sub(*p, wdg_map);
 247         pnl.add(*p.get());
 248         wdg_map[n] = p.release();
 249 }
 250
 251
 252 Panel::Child::Child(Panel &p, Widget *w):
 253         Container::Child(p, w)
 254 {
 255         widget->signal_visibility_changed.connect(sigc::mem_fun(this, &Child::visibility_changed));
 256         widget->signal_request_focus.connect(sigc::mem_fun(this, &Child::request_focus));
 257         widget->signal_grab_pointer.connect(sigc::mem_fun(this, &Child::grab_pointer));
 258         widget->signal_ungrab_pointer.connect(sigc::mem_fun(this, &Child::ungrab_pointer));
 259 }
 260
 261 Panel::Child::~Child()
 262 {
 263         visibility_changed(false);
 264 }
 265
 266 void Panel::Child::visibility_changed(bool v)
 267 {
 268         if(!v)
 269         {
 270                 Panel &panel = static_cast<Panel &>(container);
 271                 if(widget==panel.pointer_focus)
 272                         panel.set_pointer_focus(0);
 273                 if(widget==panel.input_focus)
 274                         panel.set_input_focus(0);
 275         }
 276 }
 277
 278 void Panel::Child::autosize_changed()
 279 {
 280         Panel &panel = static_cast<Panel &>(container);
 281         if(panel.layout)
 282                 panel.layout->update();
 283 }
 284
 285 void Panel::Child::request_focus()
 286 {
 287         Panel &panel = static_cast<Panel &>(container);
 288         panel.set_input_focus(widget);
 289         if(panel.parent && panel.visible)
 290                 panel.set_focus();
 291 }
 292
 293 void Panel::Child::grab_pointer()
 294 {
 295         Panel &panel = static_cast<Panel &>(container);
 296         if(!panel.pointer_grabbed)
 297         {
 298                 panel.set_pointer_focus(widget);
 299                 panel.pointer_grabbed = true;
 300                 panel.signal_grab_pointer.emit();
 301         }
 302 }
 303
 304 void Panel::Child::ungrab_pointer()
 305 {
 306         Panel &panel = static_cast<Panel &>(container);
 307         if(panel.pointer_grabbed && panel.pointer_focus==widget)
 308         {
 309                 // XXX Should set to the widget under pointer
 310                 panel.set_pointer_focus(0);
 311                 panel.pointer_grabbed = false;
 312                 panel.signal_ungrab_pointer.emit();
 313         }
 314 }
 315
 316 } // namespace GLtk
 317 } // namespace Msp