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 <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         pointer_focus(0),
  31         pointer_grab(0),
  32         input_focus(0)
  33 {
  34         update_style();
  35 }
  36
  37 Panel::~Panel()
  38 {
  39         while(!children.empty())
  40                 delete children.front();
  41 }
  42
  43 void Panel::add(Widget &wdg)
  44 {
  45         set_parent(wdg, this);
  46         children.push_back(&wdg);
  47 }
  48
  49 void Panel::remove(Widget &wdg)
  50 {
  51         ChildSeq::iterator i=find(children.begin(), children.end(), &wdg);
  52         if(i!=children.end())
  53         {
  54                 if(&wdg==pointer_focus)
  55                         set_pointer_focus(0, 0);
  56                 if(&wdg==input_focus)
  57                         set_input_focus(0);
  58
  59                 set_parent(wdg, 0);
  60                 children.erase(i);
  61         }
  62 }
  63
  64 void Panel::raise(Widget &wdg)
  65 {
  66         ChildSeq::iterator i=find(children.begin(), children.end(), &wdg);
  67         if(i!=children.end())
  68         {
  69                 children.erase(i);
  70                 children.push_back(&wdg);
  71         }
  72 }
  73
  74 void Panel::button_press(int x, int y, unsigned btn)
  75 {
  76         if(pointer_grab>0)
  77         {
  78                 const Geometry &cgeom=pointer_focus->get_geometry();
  79                 pointer_focus->button_press(x-cgeom.x, y-cgeom.y, btn);
  80         }
  81         else if(geom.is_inside_relative(x, y))
  82         {
  83                 if(Widget *wdg=get_child_at(x, y))
  84                 {
  85                         set_pointer_focus(wdg, btn);
  86                         set_input_focus(wdg);
  87
  88                         const Geometry &cgeom=wdg->get_geometry();
  89                         wdg->button_press(x-cgeom.x, y-cgeom.y, btn);
  90                 }
  91         }
  92 }
  93
  94 void Panel::button_release(int x, int y, unsigned btn)
  95 {
  96         if(pointer_grab>0)
  97         {
  98                 const Geometry &cgeom=pointer_focus->get_geometry();
  99                 pointer_focus->button_release(x-cgeom.x, y-cgeom.y, btn);
 100
 101                 if(btn==pointer_grab)
 102                         set_pointer_focus(get_child_at(x, y), 0);
 103         }
 104         else if(geom.is_inside_relative(x, y))
 105         {
 106                 if(Widget *wdg=get_child_at(x, y))
 107                 {
 108                         const Geometry &cgeom=wdg->get_geometry();
 109                         wdg->button_release(x-cgeom.x, y-cgeom.y, btn);
 110                 }
 111         }
 112 }
 113
 114 void Panel::pointer_motion(int x, int y)
 115 {
 116         if(pointer_grab>0)
 117         {
 118                 const Geometry &cgeom=pointer_focus->get_geometry();
 119                 pointer_focus->pointer_motion(x-cgeom.x, y-cgeom.y);
 120         }
 121         else if(geom.is_inside_relative(x, y))
 122         {
 123                 Widget *wdg=get_child_at(x, y);
 124                 set_pointer_focus(wdg, 0);
 125                 if(wdg)
 126                 {
 127                         const Geometry &cgeom=wdg->get_geometry();
 128                         wdg->pointer_motion(x-cgeom.x, y-cgeom.y);
 129                 }
 130         }
 131 }
 132
 133 void Panel::pointer_leave()
 134 {
 135         set_pointer_focus(0, 0);
 136 }
 137
 138 void Panel::key_press(unsigned key, unsigned mod, wchar_t ch)
 139 {
 140         if(input_focus)
 141                 input_focus->key_press(key, mod, ch);
 142 }
 143
 144 void Panel::key_release(unsigned key, unsigned mod)
 145 {
 146         if(input_focus)
 147                 input_focus->key_release(key, mod);
 148 }
 149
 150 void Panel::focus_out()
 151 {
 152         set_input_focus(0);
 153 }
 154
 155 void Panel::child_hidden(Widget &wdg)
 156 {
 157         if(&wdg==pointer_focus)
 158                 set_pointer_focus(0, 0);
 159 }
 160
 161 void Panel::grab_pointer(Widget &wdg)
 162 {
 163         if(pointer_grab==0 || pointer_focus==&wdg)
 164                 set_pointer_focus(&wdg, 255);
 165         else
 166                 throw InvalidState("Pointer is already grabbed");
 167 }
 168
 169 void Panel::ungrab_pointer(Widget &wdg)
 170 {
 171         if(pointer_focus==&wdg)
 172                 set_pointer_focus(0, 0);
 173         else if(pointer_grab>0)
 174                 throw Exception("Someone is trying to steal the pointer!");
 175 }
 176
 177 void Panel::render_special(const Part &part) const
 178 {
 179         if(part.get_name()=="children")
 180         {
 181                 for(ChildSeq::const_iterator i=children.begin(); i!=children.end(); ++i)
 182                         if((*i)->is_visible())
 183                                 (*i)->render();
 184         }
 185 }
 186
 187 void Panel::set_pointer_focus(Widget *wdg, int grab)
 188 {
 189         if(grab>0 && !wdg)
 190                 throw InvalidParameterValue("Can't grab on null widget");
 191
 192         if(wdg!=pointer_focus)
 193         {
 194                 if(pointer_focus)
 195                         pointer_focus->pointer_leave();
 196
 197                 pointer_focus=wdg;
 198
 199                 if(pointer_focus)
 200                         pointer_focus->pointer_enter();
 201         }
 202
 203         pointer_grab=grab;
 204 }
 205
 206 void Panel::set_input_focus(Widget *wdg)
 207 {
 208         if(wdg!=input_focus)
 209         {
 210                 if(input_focus)
 211                         input_focus->focus_out();
 212
 213                 input_focus=wdg;
 214
 215                 if(input_focus)
 216                         input_focus->focus_in();
 217         }
 218 }
 219
 220 Widget *Panel::get_child_at(int x, int y)
 221 {
 222         for(ChildSeq::reverse_iterator i=children.rbegin(); i!=children.rend(); ++i)
 223                 if((*i)->is_visible() && (*i)->get_geometry().is_inside(x, y))
 224                         return *i;
 225
 226         return 0;
 227 }
 228
 229
 230 Panel::Loader::Loader(Panel &p, map<string, Widget *> &m):
 231         Widget::Loader(p),
 232         pnl(p),
 233         wdg_map(m)
 234 {
 235         add("button",    &Loader::child<Button>);
 236         add("dropdown",  &Loader::child<Dropdown>);
 237         add("entry",     &Loader::child<Entry>);
 238         add("hslider",   &Loader::child<HSlider>);
 239         add("indicator", &Loader::child<Indicator>);
 240         add("label",     &Loader::child<Label>);
 241         add("list",      &Loader::child<List>);
 242         add("panel",     &Loader::panel);
 243         add("table",     &Loader::child<Table>);
 244         add("toggle",    &Loader::child<Toggle>);
 245         add("vslider",   &Loader::child<VSlider>);
 246 }
 247
 248 template<typename T>
 249 void Panel::Loader::child(const string &n)
 250 {
 251         RefPtr<T> chl=new T(pnl.res);
 252         load_sub(*chl);
 253         pnl.add(*chl.get());
 254         wdg_map[n]=chl.release();
 255 }
 256
 257 void Panel::Loader::panel(const string &n)
 258 {
 259         RefPtr<Panel> p=new Panel(pnl.res);
 260         load_sub(*p, wdg_map);
 261         pnl.add(*p.get());
 262         wdg_map[n]=p.release();
 263 }
 264
 265 } // namespace GLtk
 266 } // namespace Msp