1 files changed, 187 insertions, 0 deletions

diff --git a/src/FbTk/EventManager.cc b/src/FbTk/EventManager.cc
new file mode 100644
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+++ b/src/FbTk/EventManager.cc
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+// EventManager.cc
+// Copyright (c) 2002 Henrik Kinnunen (fluxgen at linuxmail.org)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+// $Id: EventManager.cc,v 1.10 2003/10/14 16:23:16 rathnor Exp $
+
+#include "EventManager.hh"
+#include "FbWindow.hh"
+#include "App.hh"
+
+#include <iostream>
+using namespace std;
+
+namespace FbTk {
+
+EventManager *EventManager::instance() {
+    static EventManager ev;
+    return &ev;
+}
+
+EventManager::~EventManager() {
+    if (m_eventhandlers.size() != 0)
+        cerr<<"FbTk::EventManager: Warning: unregistered eventhandlers!"<<endl;
+}
+
+void EventManager::handleEvent(XEvent &ev) {
+    dispatch(ev.xany.window, ev);
+}
+
+void EventManager::add(EventHandler &ev, const FbWindow &win) {
+    registerEventHandler(ev, win.window());
+}
+
+void EventManager::addParent(EventHandler &ev, const FbWindow &win) {
+    if (win.window() != 0)
+        m_parent[win.window()] = &ev;
+}
+
+void EventManager::remove(const FbWindow &win) {
+    unregisterEventHandler(win.window());
+}
+
+Window EventManager::getEventWindow(XEvent &ev) {
+    // we only have cases for events that differ from xany
+    switch (ev.type) {
+    case CreateNotify:
+        // XCreateWindowEvent
+        return ev.xcreatewindow.window;
+        break;
+    case DestroyNotify:
+        // XDestroyWindowEvent
+        return ev.xdestroywindow.window;
+        break;
+    case UnmapNotify:
+        // XUnmapEvent
+        return ev.xunmap.window;
+        break;
+    case MapNotify:
+        // XMapEvent
+        return ev.xmap.window;
+        break;
+    case MapRequest:
+        // XMapRequestEvent
+        return ev.xmaprequest.window;
+        break;
+    case ReparentNotify:
+        // XReparentEvent
+        return ev.xreparent.window;
+        break;
+    case ConfigureNotify:
+        // XConfigureNotify
+        return ev.xconfigure.window;
+        break;
+    case GravityNotify:
+        // XGravityNotify
+        return ev.xgravity.window;
+        break;
+    case ConfigureRequest:
+        // XConfigureRequestEvent
+        return ev.xconfigurerequest.window;
+        break;
+    case CirculateNotify:
+        // XCirculateEvent
+        return ev.xcirculate.window;
+        break;
+    case CirculateRequest:
+        // XCirculateRequestEvent
+        return ev.xcirculaterequest.window;
+        break;
+    default:
+        return ev.xany.window;
+    }
+}
+
+void EventManager::registerEventHandler(EventHandler &ev, Window win) {
+    if (win != None)
+        m_eventhandlers[win] = &ev;
+}
+
+void EventManager::unregisterEventHandler(Window win) {
+    if (win != None) {
+        m_eventhandlers.erase(win);
+        m_parent.erase(win);
+    }
+}
+
+void EventManager::dispatch(Window win, XEvent &ev, bool parent) {
+    EventHandler *evhand = 0;
+    if (parent)
+        evhand = m_parent[win];
+    else {
+        win = getEventWindow(ev);
+        evhand = m_eventhandlers[win];
+    }
+
+    if (evhand == 0)
+        return;
+
+    switch (ev.type) {
+    case KeyPress:
+        evhand->keyPressEvent(ev.xkey);
+        break;
+    case KeyRelease:
+        evhand->keyReleaseEvent(ev.xkey);
+        break;
+    case ButtonPress:
+        evhand->buttonPressEvent(ev.xbutton);
+        break;
+    case ButtonRelease:
+        evhand->buttonReleaseEvent(ev.xbutton);
+        break;
+    case MotionNotify:
+        evhand->motionNotifyEvent(ev.xmotion);
+        break;
+    case Expose:
+        evhand->exposeEvent(ev.xexpose);
+        break;
+    case EnterNotify:
+        evhand->enterNotifyEvent(ev.xcrossing);
+        break;
+    case LeaveNotify:
+        evhand->leaveNotifyEvent(ev.xcrossing);
+        break;
+    default:
+        evhand->handleEvent(ev);
+        break;
+    };
+
+    // find out which window is the parent and 
+    // dispatch event
+    Window root, parent_win, *children = 0;
+    unsigned int num_children;
+    if (XQueryTree(FbTk::App::instance()->display(), win, 
+                   &root, &parent_win, &children, &num_children) != 0) {
+        if (children != 0) 
+            XFree(children);
+
+        if (parent_win != 0 &&
+            parent_win != root) {
+            if (m_parent[parent_win] == 0)
+                return;
+
+            // dispatch event to parent
+            dispatch(parent_win, ev, true);
+        }
+    }
+
+}
+
+}; // end namespace FbTk