improved mouse emulation

svn path=/trunk/kdebase/kwin/; revision=53892

workspace.cpp

@@ -1925,6 +1925,8 @@ void Workspace::slotMouseEmulation()
 		       GrabModeAsync, GrabModeAsync,
 		       kwin_time) == GrabSuccess ) {
 	mouse_emulation = TRUE;
+	mouse_emulation_state = 0;
+	mouse_emulation_window = 0;
     }
 }
 
@@ -2175,6 +2177,105 @@ QPoint Workspace::adjustClientPosition( Client* c, QPoint pos )
 }
 
 
+
+/*!
+  Returns the child window under the mouse and activates the
+  respective client if necessary.
+
+  Auxiliary function for the mouse emulation system.
+ */
+WId Workspace::getMouseEmulationWindow()
+{
+    Window root;
+    Window child = qt_xrootwin();
+    int root_x, root_y, lx, ly;
+    uint state;
+    Window w;
+    Client * c = 0;
+    do {
+	w = child;
+	if (!c)
+	    c = findClientWidthId( w );
+	XQueryPointer( qt_xdisplay(), w, &root, &child,
+		       &root_x, &root_y, &lx, &ly, &state );
+    } while  ( child != None && child != w );
+
+    if ( c && !c->isActive() )
+	activateClient( c );
+    return (WId) w;
+}
+
+/*!
+  Sends a faked mouse event to the specified window. Returns the new button state.
+ */
+unsigned int Workspace::sendFakedMouseEvent( QPoint pos, WId w, MouseEmulation type, int button, unsigned int state )
+{
+    if ( !w )
+	return state;
+    QWidget* widget = QWidget::find( w );
+    if ( (!widget ||  widget->inherits("QToolButton") ) && !findClient( w ) ) {
+	int x, y;
+	Window xw;
+	XTranslateCoordinates( qt_xdisplay(), qt_xrootwin(), w, pos.x(), pos.y(), &x, &y, &xw );
+	if ( type == EmuMove ) { // motion notify events
+	    XMotionEvent e;
+	    e.type = MotionNotify;
+	    e.window = w;
+	    e.root = qt_xrootwin();
+	    e.subwindow = w;
+	    e.time = kwin_time;
+	    e.x = x;
+	    e.y = y;
+	    e.x_root = pos.x();
+	    e.y_root = pos.y();
+	    e.state = state;
+	    e.is_hint = NotifyNormal;
+	    XSendEvent( qt_xdisplay(), w, TRUE, ButtonMotionMask, (XEvent*)&e );
+	} else {
+	    XButtonEvent e;
+	    e.type = type == EmuRelease ? ButtonRelease : ButtonPress;
+	    e.window = w;
+	    e.root = qt_xrootwin();
+	    e.subwindow = w;
+	    e.time = kwin_time;
+	    e.x = x;
+	    e.y = y;
+	    e.x_root = pos.x();
+	    e.y_root = pos.y();
+	    e.state = state;
+	    e.button = button;
+	    XSendEvent( qt_xdisplay(), w, TRUE, ButtonPressMask, (XEvent*)&e );
+	
+	    if ( type == EmuPress ) {
+		switch ( button ) {
+		case 2:
+		    state |= Button2Mask;
+		    break;
+		case 3:
+		    state |= Button3Mask;
+		    break;
+		default: // 1
+		    state |= Button1Mask;
+		    break;
+		}
+	    } else {
+		switch ( button ) {
+		case 2:
+		    state &= ~Button2Mask;
+		    break;
+		case 3:
+		    state &= ~Button3Mask;
+		    break;
+		default: // 1
+		    state &= ~Button1Mask;
+		    break;
+		}
+	    }
+	}
+    }
+    return state;
+}
+
 /*!
   Handles keypress event during mouse emulation
  */
@@ -2187,6 +2288,7 @@ bool Workspace::keyPressMouseEmulation( XKeyEvent key )
 
     bool is_control = km & ControlMask;
     bool is_alt = km & Mod1Mask;
+    bool is_shift = km & ShiftMask;
     int delta = is_control?1:is_alt?32:8;
     QPoint pos = QCursor::pos();
 
@@ -2207,46 +2309,47 @@ bool Workspace::keyPressMouseEmulation( XKeyEvent key )
     case XK_KP_Down:
 	pos.ry() += delta;
 	break;
+    case XK_F1:
+	if ( !mouse_emulation_state )
+	    mouse_emulation_window = getMouseEmulationWindow();
+	if ( (mouse_emulation_state & Button1Mask) == 0 )
+	    mouse_emulation_state = sendFakedMouseEvent( pos, mouse_emulation_window, EmuPress, Button1, mouse_emulation_state );		
+	if ( !is_shift )
+	    mouse_emulation_state = sendFakedMouseEvent( pos, mouse_emulation_window, EmuRelease, Button1, mouse_emulation_state );		
+	break;
+    case XK_F2:
+	if ( !mouse_emulation_state )
+	    mouse_emulation_window = getMouseEmulationWindow();
+	if ( (mouse_emulation_state & Button2Mask) == 0 )
+	    mouse_emulation_state = sendFakedMouseEvent( pos, mouse_emulation_window, EmuPress, Button2, mouse_emulation_state );		
+	if ( !is_shift )
+	    mouse_emulation_state = sendFakedMouseEvent( pos, mouse_emulation_window, EmuRelease, Button2, mouse_emulation_state );		
+	break;
+    case XK_F3:
+	if ( !mouse_emulation_state )
+	    mouse_emulation_window = getMouseEmulationWindow();
+	if ( (mouse_emulation_state & Button3Mask) == 0 )
+	    mouse_emulation_state = sendFakedMouseEvent( pos, mouse_emulation_window, EmuPress, Button3, mouse_emulation_state );		
+	if ( !is_shift )
+	    mouse_emulation_state = sendFakedMouseEvent( pos, mouse_emulation_window, EmuRelease, Button3, mouse_emulation_state );		
+	break;
     case XK_Return:
     case XK_space:
     case XK_KP_Enter:
     case XK_KP_Space:
 	{
-	    Window root;
+	    if ( !mouse_emulation_state ) {
-	    Window child = qt_xrootwin();
+		// nothing was pressed, fake a LMB click
-	    int root_x, root_y, lx, ly;
+		mouse_emulation_window = getMouseEmulationWindow();
-	    uint state;
+		mouse_emulation_state = sendFakedMouseEvent( pos, mouse_emulation_window, EmuPress, Button1, mouse_emulation_state );		
-	    Window w;
+		mouse_emulation_state = sendFakedMouseEvent( pos, mouse_emulation_window, EmuRelease, Button1, mouse_emulation_state );		
-	    Client * c = 0;
+	    } else { // release all
-	    do {
+		if ( mouse_emulation_state & Button1Mask )
-		w = child;
+		    mouse_emulation_state = sendFakedMouseEvent( pos, mouse_emulation_window, EmuRelease, Button1, mouse_emulation_state );
-		if (!c)
+		if ( mouse_emulation_state & Button2Mask )
-		    c = findClientWidthId( w );
+		    mouse_emulation_state = sendFakedMouseEvent( pos, mouse_emulation_window, EmuRelease, Button2, mouse_emulation_state );
-		XQueryPointer( qt_xdisplay(), w, &root, &child,
+		if ( mouse_emulation_state & Button3Mask )
-			       &root_x, &root_y, &lx, &ly, &state );
+		    mouse_emulation_state = sendFakedMouseEvent( pos, mouse_emulation_window, EmuRelease, Button3, mouse_emulation_state );
-	    } while  ( child != None && child != w );
-
-	    if ( c && !c->isActive() )
-		activateClient( c );
-
-	    QWidget* widget = QWidget::find( w );
-	    if ( (!widget ||  widget->inherits("QToolButton") ) && !findClient( w ) ) {
-		XButtonEvent e;
-		e.type = ButtonPress;
-		e.window = w;
-		e.root = qt_xrootwin();
-		e.subwindow = w;
-		e.time = kwin_time;
-		e.x = lx;
-		e.y = ly;
-		e.x_root = root_x;
-		e.y_root = root_y;
-		e.state = key.state;
-		e.button = Button1;
-		XSendEvent( qt_xdisplay(), w, TRUE, ButtonPressMask, (XEvent*)&e );
-		e.type = ButtonRelease;
-		e.state = key.state & Button1Mask;
-		XSendEvent( qt_xdisplay(), w, TRUE, ButtonReleaseMask,  (XEvent*)&e );
 	    }
 	}
 	// fall through
@@ -2259,6 +2362,8 @@ bool Workspace::keyPressMouseEmulation( XKeyEvent key )
     }
 
     QCursor::setPos( pos );
+    if ( mouse_emulation_state )
+	mouse_emulation_state = sendFakedMouseEvent( pos, mouse_emulation_window, EmuMove, 0,  mouse_emulation_state );		
     return TRUE;
 
 }

workspace.h

@@ -259,6 +259,11 @@ private:
       int row;
     };
     
+    // mouse emulation
+    WId getMouseEmulationWindow();
+    enum MouseEmulation { EmuPress, EmuRelease, EmuMove };
+    unsigned int sendFakedMouseEvent( QPoint pos, WId win, MouseEmulation type, int button, unsigned int state ); // returns the new state
+
     // ------------------
 
     DockWindowList dockwins;
@@ -286,6 +291,8 @@ private:
     bool control_grab;
     bool tab_grab;
     bool mouse_emulation;
+    unsigned int mouse_emulation_state;
+    WId mouse_emulation_window;
     bool focus_change;
 
     TabBox* tab_box;