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
  10 extern "C" {
  11 #ifdef HAVE_STDIO_H
  12 #  include <stdio.h>
  13 #endif
  14 }
  15
  16 #include <iostream>
  17
  18 namespace otk {
  19
  20 EventDispatcher::EventDispatcher()
  21   : _fallback(0), _master(0)
  22 {
  23 }
  24
  25 EventDispatcher::~EventDispatcher()
  26 {
  27 }
  28
  29 void EventDispatcher::clearAllHandlers(void)
  30 {
  31   _map.clear();
  32 }
  33
  34 void EventDispatcher::registerHandler(Window id, EventHandler *handler)
  35 {
  36   _map.insert(std::pair<Window, EventHandler*>(id, handler));
  37 }
  38
  39 void EventDispatcher::clearHandler(Window id)
  40 {
  41   _map.erase(id);
  42 }
  43
  44 void EventDispatcher::dispatchEvents(void)
  45 {
  46   XEvent e;
  47
  48   while (XPending(**display)) {
  49     XNextEvent(**display, &e);
  50
  51 #if 0//defined(DEBUG)
  52     printf("Event %d window %lx\n", e.type, e.xany.window);
  53 #endif
  54
  55     if (e.type == FocusIn || e.type == FocusOut) {
  56       // focus events are a beast all their own.. yuk, hate, etc.
  57       dispatchFocus(e);
  58     } else {
  59       Window win;
  60
  61       // pick a window
  62       switch (e.type) {
  63       case UnmapNotify:
  64         win = e.xunmap.window;
  65         break;
  66       case DestroyNotify:
  67         win = e.xdestroywindow.window;
  68         break;
  69       case ConfigureRequest:
  70         win = e.xconfigurerequest.window;
  71         break;
  72       default:
  73         win = e.xany.window;
  74       }
  75
  76       // grab the lasttime and hack up the modifiers
  77       switch (e.type) {
  78       case ButtonPress:
  79       case ButtonRelease:
  80         _lasttime = e.xbutton.time;
  81         e.xbutton.state &= ~(LockMask | display->numLockMask() |
  82                              display->scrollLockMask());
  83         break;
  84       case KeyPress:
  85         e.xkey.state &= ~(LockMask | display->numLockMask() |
  86                           display->scrollLockMask());
  87         break;
  88       case MotionNotify:
  89         _lasttime = e.xmotion.time;
  90         e.xmotion.state &= ~(LockMask | display->numLockMask() |
  91                              display->scrollLockMask());
  92         break;
  93       case PropertyNotify:
  94         _lasttime = e.xproperty.time;
  95         break;
  96       case EnterNotify:
  97       case LeaveNotify:
  98         _lasttime = e.xcrossing.time;
  99         if (e.xcrossing.mode != NotifyNormal)
 100           continue; // skip me!
 101         break;
 102       }
 103
 104       dispatch(win, e);
 105     }
 106   }
 107 }
 108
 109 void EventDispatcher::dispatchFocus(const XEvent &e)
 110 {
 111 //  printf("focus %s detail %d -> 0x%lx\n",
 112 //         (e.xfocus.type == FocusIn ? "IN" : "OUT"),
 113 //         e.xfocus.detail, e.xfocus.window);
 114   // ignore focus changes from grabs
 115   if (e.xfocus.mode == NotifyGrab) //|| e.xfocus.mode == NotifyUngrab ||
 116       // From Metacity, from WindowMaker, ignore all funky pointer root events
 117       // its commented out cuz I don't think we need this at all. If problems
 118       // arise we can look into it
 119       //e.xfocus.detail > NotifyNonlinearVirtual)
 120     return;
 121
 122   if (e.type == FocusIn) {
 123     //printf("Got FocusIn!\n");
 124
 125     // send a FocusIn to whatever was just focused
 126     dispatch(e.xfocus.window, e);
 127     //printf("Sent FocusIn 0x%lx\n", e.xfocus.window);
 128
 129   } else if (e.type == FocusOut) {
 130     //printf("Got FocusOut!\n");
 131
 132     // FocusOut events just make us look for FocusIn events. They are ignored
 133     // otherwise.
 134     XEvent fi;
 135     if (XCheckTypedEvent(**display, FocusIn, &fi)) {
 136       //printf("Found FocusIn\n");
 137       dispatchFocus(fi);
 138       // dont unfocus the window we just focused!
 139       if (fi.xfocus.window == e.xfocus.window)
 140         return;
 141     }
 142
 143     dispatch(e.xfocus.window, e);
 144     //printf("Sent FocusOut 0x%lx\n", e.xfocus.window);
 145   }
 146 }
 147
 148 void EventDispatcher::dispatch(Window win, const XEvent &e)
 149 {
 150   EventHandler *handler = 0;
 151   EventMap::iterator it;
 152
 153   // master gets everything first
 154   if (_master)
 155     _master->handle(e);
 156
 157   // find handler for the chosen window
 158   it = _map.find(win);
 159
 160   if (it != _map.end()) {
 161     // if we found a handler
 162     handler = it->second;
 163   } else if (e.type == ConfigureRequest) {
 164     // unhandled configure requests must be used to configure the window
 165     // directly
 166     XWindowChanges xwc;
 167
 168     xwc.x = e.xconfigurerequest.x;
 169     xwc.y = e.xconfigurerequest.y;
 170     xwc.width = e.xconfigurerequest.width;
 171     xwc.height = e.xconfigurerequest.height;
 172     xwc.border_width = e.xconfigurerequest.border_width;
 173     xwc.sibling = e.xconfigurerequest.above;
 174     xwc.stack_mode = e.xconfigurerequest.detail;
 175
 176 #ifdef DEBUG
 177     printf("Proxying configure event for 0x%lx\n", e.xconfigurerequest.window);
 178 #endif
 179
 180     // we are not to be held responsible if someone sends us an invalid
 181     // request!
 182     display->setIgnoreErrors(true);
 183     XConfigureWindow(**display, e.xconfigurerequest.window,
 184                      e.xconfigurerequest.value_mask, &xwc);
 185     display->setIgnoreErrors(false);
 186   } else {
 187     // grab a falback if it exists
 188     handler = _fallback;
 189   }
 190
 191   if (handler)
 192     handler->handle(e);
 193 }
 194
 195 EventHandler *EventDispatcher::findHandler(Window win)
 196 {
 197   EventMap::iterator it = _map.find(win);
 198   if (it != _map.end())
 199     return it->second;
 200   return 0;
 201 }
 202
 203 }