diff options
| -rw-r--r-- | lumina-desktop/LXcbEventFilter.h | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/lumina-desktop/LXcbEventFilter.h b/lumina-desktop/LXcbEventFilter.h new file mode 100644 index 00000000..390a2c14 --- /dev/null +++ b/lumina-desktop/LXcbEventFilter.h @@ -0,0 +1,161 @@ +//=========================================== +// Lumina-DE source code +// Copyright (c) 2012, Ken Moore +// Available under the 3-clause BSD license +// See the LICENSE file for full details +//=========================================== +// This class provides the XCB ->Xlib conversion necessary for Qt5 usage +//=========================================== +#ifndef _LUMINA_DESKTOP_XCB_FILTER_H +#define _LUMINA_DESKTOP_XCB_FILTER_H + +#include <QAbstractNativeEventFilter> +#include <QList> +#include <QStringList> +#include <QDebug> +#include <xcb/xcb.h> +#include <xcb/xproto.h> +#include <xcb/damage.h> +#include <xcb/xcb_atom.h> +#include "LSession.h" + +/* +List of XCB response types (since almost impossible to find good docs on XCB) +switch (xcb_generic_event_t*->response_type & ~0x80) +case values: +XCB_KEY_[PRESS | RELEASE] +XCB_BUTTON_[PRESS | RELEASE] +XCB_MOTION_NOTIFY +XCB_ENTER_NOTIFY +XCB_LEAVE_NOTIFY +XCB_FOCUS_[IN | OUT] +XCB_KEYMAP_NOTIFY +XCB_EXPOSE +XCB_GRAPHICS_EXPOSURE +XCB_VISIBILITY_NOTIFY +XCB_CREATE_NOTIFY +XCB_DESTROY_NOTIFY +XCB_UNMAP_NOTIFY +XCB_MAP_[NOTIFY | REQUEST] +XCB_REPARENT_NOTIFY +XCB_CONFIGURE_[NOTIFY | REQUEST] +XCB_GRAVITY_NOTIFY +XCB_RESIZE_REQUEST +XCB_CIRCULATE_[NOTIFY | REQUEST] +XCB_PROPERTY_NOTIFY +XCB_SELECTION_[CLEAR | REQUEST | NOTIFY] +XCB_COLORMAP_NOTIFY +XCB_CLIENT_MESSAGE + +Also: it appears that the Xlib "Window" is identical to an XCB "xcb_window_t" +*/ + +//SYSTEM TRAY STANDARD DEFINITIONS +#define SYSTEM_TRAY_REQUEST_DOCK 0 +#define SYSTEM_TRAY_BEGIN_MESSAGE 1 +#define SYSTEM_TRAY_CANCEL_MESSAGE 2 + +class XCBEventFilter : public QAbstractNativeEventFilter{ +private: + LSession *session; + QList<xcb_atom_t> atoms; + xcb_atom_t _NET_SYSTEM_TRAY_OPCODE; + int TrayDmgFlag; //internal damage event offset value for the system tray + + void checkClientMessage(xcb_client_message_event_t* event){ + if(event->type == _NET_SYSTEM_TRAY_OPCODE && event->format == 32){ + //data32[0] is timestamp, [1] is opcode, [2] is window handle + uint32_t opcode = event->data.data32[1]; + if(opcode==SYSTEM_TRAY_REQUEST_DOCK){ + session->SysTrayDockRequest(event->data.data32[2]); + } + //Ignore the System Tray messages at the moment (let the WM handle it) + } + } + + void InitAtoms(){ + atoms.clear(); + QStringList names; + //List all the atoms that we want to detect for proprty changes + names << "_NET_CLIENT_LIST" << "_NET_ACTIVE_WINDOW" << "_NET_WM_NAME" << "_NET_WM_VISIBLE_NAME" \ + << "_NET_WM_ICON_NAME" << "_NET_WM_VISIBLE_ICON_NAME" << "_NET_WM_STATE"; + + xcb_connection_t *c = xcb_connect (NULL, NULL); + xcb_intern_atom_cookie_t *cs = (xcb_intern_atom_cookie_t *) malloc (names.length() * sizeof(xcb_intern_atom_cookie_t)); + for(int i = 0; i < names.length(); ++i) + cs[i] = xcb_intern_atom (c, 0, names[i].length(), names[i].toStdString().c_str()); + + for(int i = 0; i < names.length(); ++i) { + xcb_intern_atom_reply_t *r = xcb_intern_atom_reply(c, cs[i], 0); + if(r){ atoms << r->atom; } + free(r); + } + //Also need the _net_system_tray_opcode atom as well + xcb_intern_atom_cookie_t cookie = xcb_intern_atom(c, 0, 23,"_NET_SYSTEM_TRAY_OPCODE"); + xcb_intern_atom_reply_t *r = xcb_intern_atom_reply(c, cookie, 0); + if(r){ _NET_SYSTEM_TRAY_OPCODE = r->atom; } + free(r); + } + +public: + XCBEventFilter(LSession *sessionhandle = 0) : QAbstractNativeEventFilter(){ + session = sessionhandle; //save this for interaction with the session later + TrayDmgFlag = 0; + InitAtoms(); + } + void setTrayDamageFlag(int flag){ + //Special flag for system tray damage events + TrayDmgFlag = flag + XCB_DAMAGE_NOTIFY; //save the whole flag (no calculations later) + } + //This function format taken directly from the Qt5.3 documentation + virtual bool nativeEventFilter(const QByteArray &eventType, void *message, long *) Q_DECL_OVERRIDE + { + //qDebug() << "New Event"; + 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){ + case XCB_PROPERTY_NOTIFY: + //qDebug() << "Property Notify Event:"; + if( atoms.contains( ((xcb_property_notify_event_t*)ev)->atom) ){ + //qDebug() << " - launch session property event"; + session->WindowPropertyEvent(); + } + break; + + case XCB_CLIENT_MESSAGE: + //qDebug() << "Client Message Event"; + checkClientMessage( (xcb_client_message_event_t*)ev ); + break; + + case XCB_DESTROY_NOTIFY: + //qDebug() << "Window Closed Event"; + session->WindowClosedEvent( ( (xcb_destroy_notify_event_t*)ev )->window ); + break; + + case XCB_CONFIGURE_NOTIFY: + //qDebug() << "Configure Notify Event"; + session->WindowConfigureEvent( ((xcb_configure_notify_event_t*)ev)->window ); + break; + + case XCB_SELECTION_CLEAR: + //qDebug() << "Selection Clear Event"; + session->WindowSelectionClearEvent( ((xcb_selection_clear_event_t*)ev)->owner ); + break; + + default: + if( (ev->response_type & ~0x80)==TrayDmgFlag){ + session->WindowDamageEvent( ((xcb_damage_notify_event_t*)ev)->drawable ); + }/*else{ + qDebug() << "Default Event:" << (ev->response_type & ~0x80); + }*/ + } + } + //qDebug() << " - finished event"; + return false; //make sure the handling keeps going (transparent watching of events) + } + +}; + +#endif |