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.mode = NotifyNormal;
  17   _focus_e.xfocus.detail = NotifyNonlinear;
  18 }
  19
  20 OtkEventDispatcher::~OtkEventDispatcher()
  21 {
  22 }
  23
  24 void OtkEventDispatcher::clearAllHandlers(void)
  25 {
  26   _map.clear();
  27 }
  28
  29 void OtkEventDispatcher::registerHandler(Window id, OtkEventHandler *handler)
  30 {
  31   _map.insert(std::pair<Window, OtkEventHandler*>(id, handler));
  32 }
  33
  34 void OtkEventDispatcher::clearHandler(Window id)
  35 {
  36   _map.erase(id);
  37 }
  38
  39 void OtkEventDispatcher::dispatchEvents(void)
  40 {
  41   OtkEventMap::iterator it;
  42   XEvent e;
  43   Window focus = _focus;
  44   Window unfocus = None;
  45
  46   while (XPending(OBDisplay::display)) {
  47     XNextEvent(OBDisplay::display, &e);
  48
  49 #if 0
  50     printf("Event %d window %lx\n", e.type, e.xany.window);
  51 #endif
  52
  53     // these ConfigureRequests require some special attention
  54     if (e.type == ConfigureRequest) {
  55       // find the actual window! e.xany.window is the parent window
  56       it = _map.find(e.xconfigurerequest.window);
  57
  58       if (it != _map.end())
  59         it->second->handle(e);
  60       else {
  61         // unhandled configure requests must be used to configure the window
  62         // directly
  63         XWindowChanges xwc;
  64
  65         xwc.x = e.xconfigurerequest.x;
  66         xwc.y = e.xconfigurerequest.y;
  67         xwc.width = e.xconfigurerequest.width;
  68         xwc.height = e.xconfigurerequest.height;
  69         xwc.border_width = e.xconfigurerequest.border_width;
  70         xwc.sibling = e.xconfigurerequest.above;
  71         xwc.stack_mode = e.xconfigurerequest.detail;
  72
  73         XConfigureWindow(otk::OBDisplay::display, e.xconfigurerequest.window,
  74                          e.xconfigurerequest.value_mask, &xwc);
  75       }
  76     // madly compress all focus events
  77     } else if (e.type == FocusIn) {
  78       // any other types are not ones we're interested in
  79       if (e.xfocus.detail == NotifyNonlinear) {
  80         if (e.xfocus.window != focus) {
  81           unfocus = focus;
  82           focus = e.xfocus.window;
  83         }
  84       }
  85     } else if (e.type == FocusOut) {
  86       // any other types are not ones we're interested in
  87       if (e.xfocus.detail == NotifyNonlinear) {
  88         if (e.xfocus.window == focus) {
  89           unfocus = focus;
  90           focus = None;
  91         }
  92       }
  93     } else {
  94       // normal events
  95       dispatch(e);
  96     }
  97   }
  98
  99   if (focus != _focus) {
 100     _focus_e.xfocus.type = FocusIn;
 101     _focus_e.xfocus.window = focus;
 102     dispatch(_focus_e);
 103     _focus = focus;
 104   }
 105   if (unfocus != None) {
 106     _focus_e.xfocus.type = FocusOut;
 107     _focus_e.xfocus.window = unfocus;
 108     dispatch(_focus_e);
 109   }
 110 }
 111
 112 void OtkEventDispatcher::dispatch(const XEvent &e) {
 113   OtkEventHandler *handler;
 114   OtkEventMap::iterator it;
 115
 116   it = _map.find(e.xany.window);
 117
 118   if (it != _map.end())
 119     handler = it->second;
 120   else
 121     handler = _fallback;
 122
 123   if (handler)
 124     handler->handle(e);
 125
 126   if (master)
 127     master->handle(e);
 128 }
 129
 130 OtkEventHandler *OtkEventDispatcher::findHandler(Window win)
 131 {
 132   OtkEventMap::iterator it = _map.find(win);
 133   if (it != _map.end())
 134     return it->second;
 135   return 0;
 136 }
 137
 138 }