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   XEvent e;
  47   Window focus = None, unfocus = None;
  48   Window enter = None, leave = None;
  49   Window enter_root = None, leave_root = None;
  50
  51   while (XPending(OBDisplay::display)) {
  52     XNextEvent(OBDisplay::display, &e);
  53
  54 #if 0//defined(DEBUG)
  55     printf("Event %d window %lx\n", e.type, e.xany.window);
  56 #endif
  57
  58     Window win;
  59
  60     // pick a window
  61     switch (e.type) {
  62     case UnmapNotify:
  63       win = e.xunmap.window;
  64       break;
  65     case DestroyNotify:
  66       win = e.xdestroywindow.window;
  67       break;
  68     case ConfigureRequest:
  69       win = e.xconfigurerequest.window;
  70       break;
  71     default:
  72       win = e.xany.window;
  73     }
  74
  75     // grab the lasttime and hack up the modifiers
  76     switch (e.type) {
  77     case ButtonPress:
  78     case ButtonRelease:
  79       _lasttime = e.xbutton.time;
  80       e.xbutton.state &= ~(LockMask | OBDisplay::numLockMask() |
  81                            OBDisplay::scrollLockMask());
  82       break;
  83     case KeyPress:
  84       e.xkey.state &= ~(LockMask | OBDisplay::numLockMask() |
  85                         OBDisplay::scrollLockMask());
  86       break;
  87     case MotionNotify:
  88       _lasttime = e.xmotion.time;
  89       e.xmotion.state &= ~(LockMask | OBDisplay::numLockMask() |
  90                            OBDisplay::scrollLockMask());
  91       break;
  92     case PropertyNotify:
  93       _lasttime = e.xproperty.time;
  94       break;
  95     case EnterNotify:
  96     case LeaveNotify:
  97       _lasttime = e.xcrossing.time;
  98       break;
  99     }
 100
 101     // madly compress all focus events
 102     if (e.type == FocusIn) {
 103       // any other types are not ones we're interested in
 104       if (e.xfocus.detail == NotifyNonlinear) {
 105         focus = e.xfocus.window;
 106         unfocus = None;
 107         //printf("FocusIn focus=%lx unfocus=%lx\n", focus, unfocus);
 108       }
 109     } else if (e.type == FocusOut) {
 110       // any other types are not ones we're interested in
 111       if (e.xfocus.detail == NotifyNonlinear) {
 112         unfocus = e.xfocus.window;
 113         focus = None;
 114         //printf("FocusOut focus=%lx unfocus=%lx\n", focus, unfocus);
 115       }
 116     // madly compress all crossing events
 117     } else if (e.type == EnterNotify) {
 118       // any other types are not ones we're interested in
 119       if (e.xcrossing.mode == NotifyNormal) {
 120         // any other types are not ones we're interested in
 121         enter = e.xcrossing.window;
 122         enter_root = e.xcrossing.root;
 123         //printf("Enter enter=%lx leave=%lx\n", enter, leave);
 124       }
 125     } else if (e.type == LeaveNotify) {
 126       // any other types are not ones we're interested in
 127       if (e.xcrossing.mode == NotifyNormal) {
 128         leave = e.xcrossing.window;
 129         leave_root = e.xcrossing.root;
 130         //printf("Leave enter=%lx leave=%lx\n", enter, leave);
 131       }
 132     } else {
 133       // normal events
 134       dispatch(win, e);
 135     }
 136   }
 137
 138   if (unfocus != None) {
 139     // the last focus event was an FocusOut, so where the hell is the focus at?
 140     //printf("UNFOCUSING: %lx\n", unfocus);
 141     _focus_e.xfocus.type = FocusOut;
 142     _focus_e.xfocus.window = unfocus;
 143     dispatch(_focus_e.xfocus.window, _focus_e);
 144
 145     _focus = None;
 146   } else if (focus != None && focus != _focus) {
 147     // the last focus event was a FocusIn, so unfocus what used to be focus and
 148     // focus this new target
 149     //printf("FOCUSING: %lx\n", focus);
 150     _focus_e.xfocus.type = FocusIn;
 151     _focus_e.xfocus.window = focus;
 152     dispatch(_focus_e.xfocus.window, _focus_e);
 153
 154     if (_focus != None) {
 155       //printf("UNFOCUSING: %lx\n", _focus);
 156       _focus_e.xfocus.type = FocusOut;
 157       _focus_e.xfocus.window = _focus;
 158       dispatch(_focus_e.xfocus.window, _focus_e);
 159     }
 160
 161     _focus = focus;
 162   }
 163
 164   if (leave != None) {
 165     _crossing_e.xcrossing.type = LeaveNotify;
 166     _crossing_e.xcrossing.window = leave;
 167     _crossing_e.xcrossing.root = leave_root;
 168     dispatch(_crossing_e.xcrossing.window, _crossing_e);
 169   }
 170   if (enter != None) {
 171     _crossing_e.xcrossing.type = EnterNotify;
 172     _crossing_e.xcrossing.window = enter;
 173     _crossing_e.xcrossing.root = enter_root;
 174     dispatch(_crossing_e.xcrossing.window, _crossing_e);
 175   }
 176 }
 177
 178 void OtkEventDispatcher::dispatch(Window win, const XEvent &e) {
 179   OtkEventHandler *handler = 0;
 180   OtkEventMap::iterator it;
 181
 182   if (_master)
 183     _master->handle(e);
 184
 185   it = _map.find(win);
 186
 187   if (it != _map.end())
 188     handler = it->second;
 189   // these ConfigureRequests require some special attention
 190   else if (e.type == ConfigureRequest) {
 191     // unhandled configure requests must be used to configure the window
 192     // directly
 193     XWindowChanges xwc;
 194
 195     xwc.x = e.xconfigurerequest.x;
 196     xwc.y = e.xconfigurerequest.y;
 197     xwc.width = e.xconfigurerequest.width;
 198     xwc.height = e.xconfigurerequest.height;
 199     xwc.border_width = e.xconfigurerequest.border_width;
 200     xwc.sibling = e.xconfigurerequest.above;
 201     xwc.stack_mode = e.xconfigurerequest.detail;
 202
 203     XConfigureWindow(otk::OBDisplay::display, e.xconfigurerequest.window,
 204                      e.xconfigurerequest.value_mask, &xwc);
 205   } else
 206     handler = _fallback;
 207
 208   if (handler)
 209     handler->handle(e);
 210 }
 211
 212 OtkEventHandler *OtkEventDispatcher::findHandler(Window win)
 213 {
 214   OtkEventMap::iterator it = _map.find(win);
 215   if (it != _map.end())
 216     return it->second;
 217   return 0;
 218 }
 219
 220 }