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 (it != _map.end())
  89         it->second->handle(e);
  90       else {
  91         // unhandled configure requests must be used to configure the window
  92         // directly
  93         XWindowChanges xwc;
  94
  95         xwc.x = e.xconfigurerequest.x;
  96         xwc.y = e.xconfigurerequest.y;
  97         xwc.width = e.xconfigurerequest.width;
  98         xwc.height = e.xconfigurerequest.height;
  99         xwc.border_width = e.xconfigurerequest.border_width;
 100         xwc.sibling = e.xconfigurerequest.above;
 101         xwc.stack_mode = e.xconfigurerequest.detail;
 102
 103         XConfigureWindow(otk::OBDisplay::display, e.xconfigurerequest.window,
 104                          e.xconfigurerequest.value_mask, &xwc);
 105       }
 106     // madly compress all focus events
 107     } else if (e.type == FocusIn) {
 108       // any other types are not ones we're interested in
 109       if (e.xfocus.detail == NotifyNonlinear) {
 110         focus = e.xfocus.window;
 111         unfocus = None;
 112         //printf("FocusIn focus=%lx unfocus=%lx\n", focus, unfocus);
 113       }
 114     } else if (e.type == FocusOut) {
 115       // any other types are not ones we're interested in
 116       if (e.xfocus.detail == NotifyNonlinear) {
 117         unfocus = e.xfocus.window;
 118         focus = None;
 119         //printf("FocusOut focus=%lx unfocus=%lx\n", focus, unfocus);
 120       }
 121     // madly compress all crossing events
 122     } else if (e.type == EnterNotify) {
 123       // any other types are not ones we're interested in
 124       if (e.xcrossing.mode == NotifyNormal) {
 125         // any other types are not ones we're interested in
 126         enter = e.xcrossing.window;
 127         enter_root = e.xcrossing.root;
 128         //printf("Enter enter=%lx leave=%lx\n", enter, leave);
 129       }
 130     } else if (e.type == LeaveNotify) {
 131       // any other types are not ones we're interested in
 132       if (e.xcrossing.mode == NotifyNormal) {
 133         leave = e.xcrossing.window;
 134         leave_root = e.xcrossing.root;
 135         //printf("Leave enter=%lx leave=%lx\n", enter, leave);
 136       }
 137     } else {
 138       // normal events
 139       dispatch(e);
 140     }
 141   }
 142
 143   if (unfocus != None) {
 144     // the last focus event was an FocusOut, so where the hell is the focus at?
 145     //printf("UNFOCUSING: %lx\n", unfocus);
 146     _focus_e.xfocus.type = FocusOut;
 147     _focus_e.xfocus.window = unfocus;
 148     dispatch(_focus_e);
 149
 150     _focus = None;
 151   } else if (focus != None && focus != _focus) {
 152     // the last focus event was a FocusIn, so unfocus what used to be focus and
 153     // focus this new target
 154     //printf("FOCUSING: %lx\n", focus);
 155     _focus_e.xfocus.type = FocusIn;
 156     _focus_e.xfocus.window = focus;
 157     dispatch(_focus_e);
 158
 159     if (_focus != None) {
 160       //printf("UNFOCUSING: %lx\n", _focus);
 161       _focus_e.xfocus.type = FocusOut;
 162       _focus_e.xfocus.window = _focus;
 163       dispatch(_focus_e);
 164     }
 165
 166     _focus = focus;
 167   }
 168
 169   if (leave != None) {
 170     _crossing_e.xcrossing.type = LeaveNotify;
 171     _crossing_e.xcrossing.window = leave;
 172     _crossing_e.xcrossing.root = leave_root;
 173     dispatch(_crossing_e);
 174   }
 175   if (enter != None) {
 176     _crossing_e.xcrossing.type = EnterNotify;
 177     _crossing_e.xcrossing.window = enter;
 178     _crossing_e.xcrossing.root = enter_root;
 179     dispatch(_crossing_e);
 180   }
 181 }
 182
 183 void OtkEventDispatcher::dispatch(const XEvent &e) {
 184   OtkEventHandler *handler;
 185   OtkEventMap::iterator it;
 186
 187   if (_master)
 188     _master->handle(e);
 189
 190   it = _map.find(e.xany.window);
 191
 192   if (it != _map.end())
 193     handler = it->second;
 194   else
 195     handler = _fallback;
 196
 197   if (handler)
 198     handler->handle(e);
 199 }
 200
 201 OtkEventHandler *OtkEventDispatcher::findHandler(Window win)
 202 {
 203   OtkEventMap::iterator it = _map.find(win);
 204   if (it != _map.end())
 205     return it->second;
 206   return 0;
 207 }
 208
 209 }