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//===========================================
// Lumina-DE source code
// Copyright (c) 2015, Ken Moore
// Available under the 3-clause BSD license
// See the LICENSE file for full details
//===========================================
#include "LXcbEventFilter.h"
//==================================================
// NOTE: All the XCB interactions and atoms are accessed via:
// LWM::SYSTEM->EWMH.(atom name)
// LWM::SYSTEM->(do something)
// (LWM::SYSTEM is the global XCB structure)
//==================================================
#include <LuminaX11.h>
#include <QDebug>
//#include <xcb/screensaver.h>
#define DEBUG 1
// Also keep the root window/screen around for use in the filters
namespace L_XCB{
xcb_screen_t *root_screen;
xcb_window_t root;
}
//Constructor for the Event Filter wrapper
EventFilter::EventFilter() : QObject(){
EF = new XCBEventFilter(this);
L_XCB::root_screen = xcb_aux_get_screen(QX11Info::connection(), QX11Info::appScreen());
L_XCB::root = L_XCB::root_screen->root;
SSLocked = false;
WMFlag = 0;
}
void EventFilter::start(){
if(DEBUG){ qDebug() << " - Install event filter..."; }
QCoreApplication::instance()->installNativeEventFilter(EF);
if(DEBUG){ qDebug() << " - Run request check..."; }
if(!LWM::SYSTEM->setupEventsForRoot()){
qCritical() << "[ERROR] Unable to setup WM event retrieval. Is another WM running?";
exit(1);
}
if(DEBUG){ qDebug() << " - Create WM ID Window"; }
WMFlag = LWM::SYSTEM->WM_CreateWindow();
LWM::SYSTEM->setupEventsForRoot(WMFlag);
LWM::SYSTEM->WM_Set_Supporting_WM(WMFlag);
QCoreApplication::instance()->flush();
}
//Constructor for the XCB event filter
XCBEventFilter::XCBEventFilter(EventFilter *parent) : QAbstractNativeEventFilter(){
obj = parent;
InitAtoms();
}
//This function format taken directly from the Qt5.3 documentation
bool XCBEventFilter::nativeEventFilter(const QByteArray &eventType, void *message, long *) Q_DECL_OVERRIDE
{
//if(stopping){ return false; } //don't do any parsing
//qDebug() << "New Event";
bool stopevent = false;
if(eventType=="xcb_generic_event_t"){
//Convert to known event type (for X11 systems)
xcb_generic_event_t *ev = static_cast<xcb_generic_event_t *>(message);
//Now parse the event and emit signals as necessary
switch( ev->response_type & ~0x80){
//==============================
// INTERACTIVITY EVENTS
//==============================
case XCB_KEY_PRESS:
//This is a keyboard key press
//qDebug() << "Key Press Event";
obj->emit NewInputEvent();
stopevent = BlockInputEvent( ((xcb_key_press_event_t *) ev)->root ); //use the main "root" window - not the child widget
break;
case XCB_KEY_RELEASE:
//This is a keyboard key release
//qDebug() << "Key Release Event";
obj->emit NewInputEvent();
stopevent = BlockInputEvent( ((xcb_key_release_event_t *) ev)->root ); //use the main "root" window - not the child widget
break;
case XCB_BUTTON_PRESS:
//This is a mouse button press
//qDebug() << "Button Press Event";
obj->emit NewInputEvent();
stopevent = BlockInputEvent( ((xcb_button_press_event_t *) ev)->root ); //use the main "root" window - not the child widget
if(!stopevent){
//Activate the window right now if needed
if(LWM::SYSTEM->WM_Get_Active_Window()!=((xcb_button_press_event_t *) ev)->root){
LWM::SYSTEM->WM_Set_Active_Window( ((xcb_button_press_event_t *) ev)->root);
}
}
break;
case XCB_BUTTON_RELEASE:
//This is a mouse button release
//qDebug() << "Button Release Event";
//xcb_button_release_event_t *tmp = (xcb_button_release_event_t *)ev;
stopevent = BlockInputEvent( ((xcb_button_release_event_t *) ev)->root ); //use the main "root" window - not the child widget
break;
case XCB_MOTION_NOTIFY:
//This is a mouse movement event
//qDebug() << "Motion Notify Event";
obj->emit NewInputEvent();
stopevent = BlockInputEvent( ((xcb_motion_notify_event_t *) ev)->root ); //use the main "root" window - not the child widget);
break;
case XCB_ENTER_NOTIFY:
//This is a mouse movement event when mouse goes over a new window
//qDebug() << "Enter Notify Event";
obj->emit NewInputEvent();
stopevent = BlockInputEvent( ((xcb_enter_notify_event_t *) ev)->root );
break;
case XCB_LEAVE_NOTIFY:
//This is a mouse movement event when mouse goes leaves a window
//qDebug() << "Leave Notify Event";
obj->emit NewInputEvent();
stopevent = BlockInputEvent();
break;
//==============================
case XCB_EXPOSE:
//qDebug() << "Expose Notify Event:";
//qDebug() << " - Given Window:" << ((xcb_property_notify_event_t*)ev)->window;
break;
//==============================
case XCB_MAP_NOTIFY:
break; //This is just a notification that a window was mapped - nothing needs to change here
case XCB_MAP_REQUEST:
qDebug() << "Window Map Request Event";
obj->emit ModifyWindow( ((xcb_map_request_event_t *) ev)->window, LWM::Show);
break;
//==============================
case XCB_CREATE_NOTIFY:
qDebug() << "Window Create Event";
break;
//==============================
case XCB_UNMAP_NOTIFY:
qDebug() << "Window Unmap Event";
obj->emit ModifyWindow( ((xcb_unmap_notify_event_t *)ev)->window, LWM::Hide);
break;
//==============================
case XCB_DESTROY_NOTIFY:
qDebug() << "Window Closed Event";
obj->emit WindowClosed( ((xcb_destroy_notify_event_t *) ev)->window );
break;
//==============================
case XCB_FOCUS_IN:
//qDebug() << "Focus In Event:";
break;
//==============================
case XCB_FOCUS_OUT:
//qDebug() << "Focus Out Event:";
break;
//==============================
case XCB_PROPERTY_NOTIFY:
//qDebug() << "Property Notify Event:";
//qDebug() << " - Given Window:" << ((xcb_property_notify_event_t*)ev)->window;
break;
//==============================
case XCB_CLIENT_MESSAGE:
//qDebug() << "Client Message Event";
//qDebug() << " - Given Window:" << ((xcb_client_message_event_t*)ev)->window;
break;
//==============================
case XCB_CONFIGURE_NOTIFY:
//qDebug() << "Configure Notify Event";
break;
//==============================
case XCB_CONFIGURE_REQUEST:
//qDebug() << "Configure Request Event";
break;
//==============================
case XCB_SELECTION_CLEAR:
//qDebug() << "Selection Clear Event";
break;
//==============================
case 85: //not sure what event this is - but it seems to come up very often (just hide the notice)
case 0:
case XCB_GE_GENERIC:
break; //generic event - don't do anything special
default:
qDebug() << "Default Event:" << (ev->response_type & ~0x80);
//==============================
}
}
return false;
//never stop event handling (this will not impact the X events themselves - just the internal screensaver/WM/widgets)
}
bool XCBEventFilter::BlockInputEvent(WId win){
//Checks the current state of the WM and sets the stop flag as needed
// - Always let the screensaver know about the event first (need to reset timers and such)
obj->emit NewInputEvent();
// - Check the state of the screensaver
if(obj->SSLocked){ qDebug() << "SS Locked"; return true; }
// - Check the state of any fullscreen apps
else if( win!=0 && !obj->FS_WINS.isEmpty()){
if(!obj->FS_WINS.contains(win) ){
//If this event is for an app underneath a fullscreen window - stop it
if(obj->FS_WINS.length() == QApplication::desktop()->screenCount()){ qDebug() << "Screens Covered"; return true; } //all screens covered right now
}
}
return false;
}
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