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         list<Widget *>::iterator i=find(children.begin(), children.end(), &wdg);
  52         if(i==children.end())
  53                 throw InvalidState("That Widget is not in this Panel");
  54
  55         if(&wdg==pointer_focus)
  56                 set_pointer_focus(0, 0);
  57         if(&wdg==input_focus)
  58                 set_input_focus(0);
  59
  60         set_parent(wdg, 0);
  61         children.erase(i);
  62 }
  63
  64 void Panel::raise(Widget &wdg)
  65 {
  66         list<Widget *>::iterator i=find(children.begin(), children.end(), &wdg);
  67         if(i==children.end())
  68                 throw InvalidState("That Widget is not in this Panel");
  69
  70         children.erase(i);
  71         children.push_back(&wdg);
  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         if(&wdg==input_focus)
 160                 set_input_focus(0);
 161 }
 162
 163 void Panel::grab_pointer(Widget &wdg)
 164 {
 165         if(pointer_grab==0 || pointer_focus==&wdg)
 166         {
 167                 set_pointer_focus(&wdg, 255);
 168                 if(parent)
 169                         parent->grab_pointer(*this);
 170         }
 171         else
 172                 throw InvalidState("Pointer is already grabbed");
 173 }
 174
 175 void Panel::ungrab_pointer(Widget &wdg)
 176 {
 177         if(pointer_focus==&wdg)
 178         {
 179                 set_pointer_focus(0, 0);
 180                 if(parent)
 181                         parent->ungrab_pointer(*this);
 182         }
 183         else if(pointer_grab>0)
 184                 throw Exception("Someone is trying to steal the pointer!");
 185 }
 186
 187 void Panel::grab_focus(Widget &wdg)
 188 {
 189         list<Widget *>::iterator i=find(children.begin(), children.end(), &wdg);
 190         if(i==children.end())
 191                 throw InvalidState("That Widget is not in this Panel");
 192
 193         set_input_focus(&wdg);
 194         if(parent)
 195                 parent->grab_focus(*this);
 196 }
 197
 198 void Panel::render_special(const Part &part) const
 199 {
 200         if(part.get_name()=="children")
 201         {
 202                 for(list<Widget *>::const_iterator i=children.begin(); i!=children.end(); ++i)
 203                         if((*i)->is_visible())
 204                                 (*i)->render();
 205         }
 206 }
 207
 208 void Panel::set_pointer_focus(Widget *wdg, int grab)
 209 {
 210         if(grab>0 && !wdg)
 211                 throw InvalidParameterValue("Can't grab on null widget");
 212
 213         if(wdg!=pointer_focus)
 214         {
 215                 if(pointer_focus)
 216                         pointer_focus->pointer_leave();
 217
 218                 pointer_focus=wdg;
 219
 220                 if(pointer_focus)
 221                         pointer_focus->pointer_enter();
 222         }
 223
 224         pointer_grab=grab;
 225 }
 226
 227 void Panel::set_input_focus(Widget *wdg)
 228 {
 229         if(wdg!=input_focus)
 230         {
 231                 if(input_focus)
 232                         input_focus->focus_out();
 233
 234                 input_focus=wdg;
 235
 236                 if(input_focus)
 237                         input_focus->focus_in();
 238         }
 239 }
 240
 241 Widget *Panel::get_child_at(int x, int y)
 242 {
 243         for(list<Widget *>::reverse_iterator i=children.rbegin(); i!=children.rend(); ++i)
 244                 if((*i)->is_visible() && (*i)->get_geometry().is_inside(x, y))
 245                         return *i;
 246
 247         return 0;
 248 }
 249
 250
 251 Panel::Loader::Loader(Panel &p, map<string, Widget *> &m):
 252         Widget::Loader(p),
 253         pnl(p),
 254         wdg_map(m)
 255 {
 256         add("button",    &Loader::child<Button>);
 257         add("dropdown",  &Loader::child<Dropdown>);
 258         add("entry",     &Loader::child<Entry>);
 259         add("hslider",   &Loader::child<HSlider>);
 260         add("indicator", &Loader::child<Indicator>);
 261         add("label",     &Loader::child<Label>);
 262         add("list",      &Loader::child<List>);
 263         add("panel",     &Loader::panel);
 264         add("table",     &Loader::child<Table>);
 265         add("toggle",    &Loader::child<Toggle>);
 266         add("vslider",   &Loader::child<VSlider>);
 267 }
 268
 269 template<typename T>
 270 void Panel::Loader::child(const string &n)
 271 {
 272         RefPtr<T> chl=new T(pnl.res);
 273         load_sub(*chl);
 274         pnl.add(*chl.get());
 275         wdg_map[n]=chl.release();
 276 }
 277
 278 void Panel::Loader::panel(const string &n)
 279 {
 280         RefPtr<Panel> p=new Panel(pnl.res);
 281         load_sub(*p, wdg_map);
 282         pnl.add(*p.get());
 283         wdg_map[n]=p.release();
 284 }
 285
 286 } // namespace GLtk
 287 } // namespace Msp