source/panel.cpp

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