Dogcows Code - chaz/openbox/blob - otk/eventdispatcher.cc

   1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
   2
   3 #ifdef HAVE_CONFIG_H
   4 # include "../config.h"
   5 #endif
   6
   7 #include "eventdispatcher.hh"
   8 #include "display.hh"
   9 #include <iostream>
  10
  11 namespace otk {
  12
  13 OtkEventDispatcher::OtkEventDispatcher()
  14   : _fallback(0), _master(0), _focus(None)
  15 {
  16   _focus_e.xfocus.display = OBDisplay::display;
  17   _focus_e.xfocus.mode = NotifyNormal;
  18   _focus_e.xfocus.detail = NotifyNonlinear;
  19
  20   _crossing_e.xcrossing.display = OBDisplay::display;
  21   _crossing_e.xcrossing.mode = NotifyNormal;
  22   _crossing_e.xcrossing.detail = NotifyNonlinear;
  23 }
  24
  25 OtkEventDispatcher::~OtkEventDispatcher()
  26 {
  27 }
  28
  29 void OtkEventDispatcher::clearAllHandlers(void)
  30 {
  31   _map.clear();
  32 }
  33
  34 void OtkEventDispatcher::registerHandler(Window id, OtkEventHandler *handler)
  35 {
  36   _map.insert(std::pair<Window, OtkEventHandler*>(id, handler));
  37 }
  38
  39 void OtkEventDispatcher::clearHandler(Window id)
  40 {
  41   _map.erase(id);
  42 }
  43
  44 void OtkEventDispatcher::dispatchEvents(void)
  45 {
  46   OtkEventMap::iterator it;
  47   XEvent e;
  48   Window focus = None, unfocus = None;
  49   Window enter = None, leave = None;
  50   Window enter_root = None, leave_root = None;
  51
  52   while (XPending(OBDisplay::display)) {
  53     XNextEvent(OBDisplay::display, &e);
  54
  55 #if 0
  56     printf("Event %d window %lx\n", e.type, e.xany.window);
  57 #endif
  58
  59     // grab the lasttime and hack up the modifiers
  60     switch (e.type) {
  61     case ButtonPress:
  62     case ButtonRelease:
  63       _lasttime = e.xbutton.time;
  64       e.xbutton.state &= ~(LockMask | OBDisplay::numLockMask() |
  65                            OBDisplay::scrollLockMask());
  66       break;
  67     case KeyPress:
  68       e.xkey.state &= ~(LockMask | OBDisplay::numLockMask() |
  69                         OBDisplay::scrollLockMask());
  70       break;
  71     case MotionNotify:
  72       _lasttime = e.xmotion.time;
  73       e.xmotion.state &= ~(LockMask | OBDisplay::numLockMask() |
  74                            OBDisplay::scrollLockMask());
  75       break;
  76     case PropertyNotify:
  77       _lasttime = e.xproperty.time; break;
  78     case EnterNotify:
  79     case LeaveNotify:
  80       _lasttime = e.xcrossing.time; break;
  81     }
  82
  83     // these ConfigureRequests require some special attention
  84     if (e.type == ConfigureRequest) {
  85       // find the actual window! e.xany.window is the parent window
  86       it = _map.find(e.xconfigurerequest.window);
  87
  88       if (_master)
  89         _master->handle(e);
  90
  91       if (it != _map.end())
  92         it->second->handle(e);
  93       else {
  94         // unhandled configure requests must be used to configure the window
  95         // directly
  96         XWindowChanges xwc;
  97
  98         xwc.x = e.xconfigurerequest.x;
  99         xwc.y = e.xconfigurerequest.y;
 100         xwc.width = e.xconfigurerequest.width;
 101         xwc.height = e.xconfigurerequest.height;
 102         xwc.border_width = e.xconfigurerequest.border_width;
 103         xwc.sibling = e.xconfigurerequest.above;
 104         xwc.stack_mode = e.xconfigurerequest.detail;
 105
 106         XConfigureWindow(otk::OBDisplay::display, e.xconfigurerequest.window,
 107                          e.xconfigurerequest.value_mask, &xwc);
 108       }
 109     // madly compress all focus events
 110     } else if (e.type == FocusIn) {
 111       // any other types are not ones we're interested in
 112       if (e.xfocus.detail == NotifyNonlinear) {
 113         focus = e.xfocus.window;
 114         unfocus = None;
 115         //printf("FocusIn focus=%lx unfocus=%lx\n", focus, unfocus);
 116       }
 117     } else if (e.type == FocusOut) {
 118       // any other types are not ones we're interested in
 119       if (e.xfocus.detail == NotifyNonlinear) {
 120         unfocus = e.xfocus.window;
 121         focus = None;
 122         //printf("FocusOut focus=%lx unfocus=%lx\n", focus, unfocus);
 123       }
 124     // madly compress all crossing events
 125     } else if (e.type == EnterNotify) {
 126       // any other types are not ones we're interested in
 127       if (e.xcrossing.mode == NotifyNormal) {
 128         // any other types are not ones we're interested in
 129         enter = e.xcrossing.window;
 130         enter_root = e.xcrossing.root;
 131         //printf("Enter enter=%lx leave=%lx\n", enter, leave);
 132       }
 133     } else if (e.type == LeaveNotify) {
 134       // any other types are not ones we're interested in
 135       if (e.xcrossing.mode == NotifyNormal) {
 136         leave = e.xcrossing.window;
 137         leave_root = e.xcrossing.root;
 138         //printf("Leave enter=%lx leave=%lx\n", enter, leave);
 139       }
 140     } else {
 141       // normal events
 142       dispatch(e);
 143     }
 144   }
 145
 146   if (unfocus != None) {
 147     // the last focus event was an FocusOut, so where the hell is the focus at?
 148     //printf("UNFOCUSING: %lx\n", unfocus);
 149     _focus_e.xfocus.type = FocusOut;
 150     _focus_e.xfocus.window = unfocus;
 151     dispatch(_focus_e);
 152
 153     _focus = None;
 154   } else if (focus != None && focus != _focus) {
 155     // the last focus event was a FocusIn, so unfocus what used to be focus and
 156     // focus this new target
 157     //printf("FOCUSING: %lx\n", focus);
 158     _focus_e.xfocus.type = FocusIn;
 159     _focus_e.xfocus.window = focus;
 160     dispatch(_focus_e);
 161
 162     if (_focus != None) {
 163       //printf("UNFOCUSING: %lx\n", _focus);
 164       _focus_e.xfocus.type = FocusOut;
 165       _focus_e.xfocus.window = _focus;
 166       dispatch(_focus_e);
 167     }
 168
 169     _focus = focus;
 170   }
 171
 172   if (leave != None) {
 173     _crossing_e.xcrossing.type = LeaveNotify;
 174     _crossing_e.xcrossing.window = leave;
 175     _crossing_e.xcrossing.root = leave_root;
 176     dispatch(_crossing_e);
 177   }
 178   if (enter != None) {
 179     _crossing_e.xcrossing.type = EnterNotify;
 180     _crossing_e.xcrossing.window = enter;
 181     _crossing_e.xcrossing.root = enter_root;
 182     dispatch(_crossing_e);
 183   }
 184 }
 185
 186 void OtkEventDispatcher::dispatch(const XEvent &e) {
 187   OtkEventHandler *handler;
 188   OtkEventMap::iterator it;
 189
 190   if (_master)
 191     _master->handle(e);
 192
 193   it = _map.find(e.xany.window);
 194
 195   if (it != _map.end())
 196     handler = it->second;
 197   else
 198     handler = _fallback;
 199
 200   if (handler)
 201     handler->handle(e);
 202 }
 203
 204 OtkEventHandler *OtkEventDispatcher::findHandler(Window win)
 205 {
 206   OtkEventMap::iterator it = _map.find(win);
 207   if (it != _map.end())
 208     return it->second;
 209   return 0;
 210 }
 211
 212 }