Additional function for checking head

Added function for checking head of certain location. This function is
used for determinig head bounduary.

src/actions.c

@@ -354,7 +354,7 @@ void update_saved_geometry(WWindow *wwin)
 		save_old_geometry(wwin, SAVE_GEOMETRY_X);
 }
 
-void wMaximizeWindow(WWindow *wwin, int directions)
+void wMaximizeWindow(WWindow *wwin, int directions, int head)
 {
 	unsigned int new_width, new_height, half_scr_width, half_scr_height;
 	int new_x = 0;
@@ -388,20 +388,7 @@ void wMaximizeWindow(WWindow *wwin, int directions)
 	totalArea.y2 = scr->scr_height;
 	totalArea.x1 = 0;
 	totalArea.y1 = 0;
-	usableArea = totalArea;
+    usableArea = wGetUsableAreaForHead(scr, head, &totalArea, True);
-
-	if (!(directions & MAX_IGNORE_XINERAMA)) {
-		WScreen *scr = wwin->screen_ptr;
-		int head;
-
-		if (directions & MAX_KEYBOARD)
-			head = wGetHeadForWindow(wwin);
-		else
-			head = wGetHeadForPointerLocation(scr);
-
-		usableArea = wGetUsableAreaForHead(scr, head, &totalArea, True);
-	}
-
 
 	/* Only save directions, not kbd or xinerama hints */
 	directions &= (MAX_HORIZONTAL | MAX_VERTICAL | MAX_LEFTHALF | MAX_RIGHTHALF | MAX_TOPHALF | MAX_BOTTOMHALF | MAX_MAXIMUS);
@@ -497,13 +484,38 @@ void handleMaximize(WWindow *wwin, int directions)
 	int requested = directions & (MAX_HORIZONTAL | MAX_VERTICAL | MAX_LEFTHALF | MAX_RIGHTHALF | MAX_TOPHALF | MAX_BOTTOMHALF | MAX_MAXIMUS);
 	int effective = requested ^ current;
 	int flags = directions & ~requested;
+    int head = wGetHeadForWindow(wwin);
+    WMPoint p;
 
 	if (!effective) {
 		/* allow wMaximizeWindow to restore the Maximusized size */
 		if ((wwin->flags.old_maximized & MAX_MAXIMUS) &&
 				!(requested & MAX_MAXIMUS))
-			wMaximizeWindow(wwin, MAX_MAXIMUS | flags);
+			wMaximizeWindow(wwin, MAX_MAXIMUS | flags, head);
-		else
+        else if (requested & MAX_LEFTHALF && current & MAX_LEFTHALF) {
+            p.x = wwin->frame_x - 100;
+            p.y = 0;
+
+            if (p.x > 0) {
+                head = wGetHeadForPointOrNegative(wwin->screen_ptr, p);
+                if (head != -1) {
+                    effective |= MAX_RIGHTHALF;
+                    effective |= MAX_VERTICAL;
+                    effective &= ~(MAX_HORIZONTAL | MAX_LEFTHALF);
+                    wMaximizeWindow(wwin, effective | flags, head);
+                }
+            }
+        } else if (requested & MAX_RIGHTHALF && current & MAX_RIGHTHALF) {
+            p.x = wwin->frame_x + wwin->frame->core->width + 100;
+            p.y = 0;
+            head = wGetHeadForPointOrNegative(wwin->screen_ptr, p);
+            if (head != -1) {
+                effective |= MAX_LEFTHALF;
+                effective |= MAX_VERTICAL;
+                effective &= ~(MAX_HORIZONTAL | MAX_RIGHTHALF);
+                wMaximizeWindow(wwin, effective | flags, head);
+            }
+        } else
 			wUnmaximizeWindow(wwin);
 	/* these alone mean vertical|horizontal toggle */
 	} else if ((effective == MAX_LEFTHALF) ||
@@ -511,6 +523,10 @@ void handleMaximize(WWindow *wwin, int directions)
 			(effective == MAX_TOPHALF) ||
 			(effective == MAX_BOTTOMHALF))
 		wUnmaximizeWindow(wwin);
+    else if (requested & MAX_LEFTHALF && current & MAX_RIGHTHALF)
+        wMaximizeWindow(wwin, (MAX_HORIZONTAL|MAX_VERTICAL), head);
+    else if (requested & MAX_RIGHTHALF && current & MAX_LEFTHALF)
+        wMaximizeWindow(wwin, (MAX_HORIZONTAL|MAX_VERTICAL), head);
 	else {
 		if ((requested == (MAX_HORIZONTAL | MAX_VERTICAL)) ||
 				(requested == MAX_MAXIMUS))
@@ -552,7 +568,7 @@ void handleMaximize(WWindow *wwin, int directions)
 				effective &= ~(MAX_TOPHALF | MAX_BOTTOMHALF);
 			effective &= ~MAX_MAXIMUS;
 		}
-		wMaximizeWindow(wwin, effective | flags);
+		wMaximizeWindow(wwin, effective | flags, head);
 	}
 }
 

src/actions.h

@@ -57,7 +57,7 @@ void wSelectWindows(WScreen *scr, XEvent *ev);
 void wSelectWindow(WWindow *wwin, Bool flag);
 void wUnselectWindows(WScreen *scr);
 
-void wMaximizeWindow(WWindow *wwin, int directions);
+void wMaximizeWindow(WWindow *wwin, int directions, int head);
 void wUnmaximizeWindow(WWindow *wwin);
 void handleMaximize(WWindow *wwin, int directions);
 

src/event.c

@@ -632,7 +632,8 @@ static void handleMapRequest(XEvent * ev)
 	if (wwin) {
 		wClientSetState(wwin, NormalState, None);
 		if (wwin->flags.maximized) {
-			wMaximizeWindow(wwin, wwin->flags.maximized);
+			wMaximizeWindow(wwin, wwin->flags.maximized,
+                    wGetHeadForWindow(wwin));
 		}
 		if (wwin->flags.shaded) {
 			wwin->flags.shaded = 0;

src/window.c

@@ -2855,7 +2855,7 @@ static void titlebarDblClick(WCoreWindow *sender, void *data, XEvent *event)
 				int ndir = dir ^ wwin->flags.maximized;
 
 				if (ndir != 0)
-					wMaximizeWindow(wwin, ndir);
+					wMaximizeWindow(wwin, ndir, wGetHeadForWindow(wwin));
 				else
 					wUnmaximizeWindow(wwin);
 			}

src/winmenu.c

@@ -277,7 +277,8 @@ static void execMenuCommand(WMenu * menu, WMenuEntry * entry)
 		if (wwin->flags.maximized)
 			wUnmaximizeWindow(wwin);
 		else
-			wMaximizeWindow(wwin, MAX_VERTICAL | MAX_HORIZONTAL);
+			wMaximizeWindow(wwin, MAX_VERTICAL | MAX_HORIZONTAL,
+                    wGetHeadForWindow(wwin));
 		break;
 
 	case MC_SHADE:

src/wmspec.c

@@ -1120,9 +1120,11 @@ static void doStateAtom(WWindow *wwin, Atom state, int set, Bool init)
 			wwin->flags.maximized |= (set ? MAX_VERTICAL : 0);
 		} else {
 			if (set)
-				wMaximizeWindow(wwin, wwin->flags.maximized | MAX_VERTICAL);
+				wMaximizeWindow(wwin, wwin->flags.maximized | MAX_VERTICAL,
+                        wGetHeadForWindow(wwin));
 			else
-				wMaximizeWindow(wwin, wwin->flags.maximized & ~MAX_VERTICAL);
+				wMaximizeWindow(wwin, wwin->flags.maximized & ~MAX_VERTICAL,
+                        wGetHeadForWindow(wwin));
 		}
 	} else if (state == net_wm_state_maximized_horz) {
 		if (set == _NET_WM_STATE_TOGGLE)
@@ -1132,9 +1134,11 @@ static void doStateAtom(WWindow *wwin, Atom state, int set, Bool init)
 			wwin->flags.maximized |= (set ? MAX_HORIZONTAL : 0);
 		} else {
 			if (set)
-				wMaximizeWindow(wwin, wwin->flags.maximized | MAX_HORIZONTAL);
+				wMaximizeWindow(wwin, wwin->flags.maximized | MAX_HORIZONTAL,
+                        wGetHeadForWindow(wwin));
 			else
-				wMaximizeWindow(wwin, wwin->flags.maximized & ~MAX_HORIZONTAL);
+				wMaximizeWindow(wwin, wwin->flags.maximized & ~MAX_HORIZONTAL,
+                        wGetHeadForWindow(wwin));
 		}
 	} else if (state == net_wm_state_hidden) {
 		if (set == _NET_WM_STATE_TOGGLE)
@@ -1623,7 +1627,8 @@ Bool wNETWMProcessClientMessage(XClientMessageEvent *event)
 				wwin->flags.maximized = maximized;
 				wUnmaximizeWindow(wwin);
 			} else {
-				wMaximizeWindow(wwin, wwin->flags.maximized);
+				wMaximizeWindow(wwin, wwin->flags.maximized,
+                        wGetHeadForWindow(wwin));
 			}
 		}
 		updateStateHint(wwin, False, False);

src/xinerama.c

@@ -236,7 +236,7 @@ int wGetHeadForWindow(WWindow * wwin)
 	return wGetHeadForRect(wwin->screen_ptr, rect);
 }
 
-int wGetHeadForPoint(WScreen * scr, WMPoint point)
+int wGetHeadForPointOrNegative(WScreen * scr, WMPoint point)
 {
 	int i;
 
@@ -247,7 +247,17 @@ int wGetHeadForPoint(WScreen * scr, WMPoint point)
 		    (unsigned)(point.y - rect->pos.y) < rect->size.height)
 			return i;
 	}
-	return scr->xine_info.primary_head;
+	return -1;
+}
+
+int wGetHeadForPoint(WScreen * scr, WMPoint point)
+{
+	int head = wGetHeadForPointOrNegative(scr, point);
+
+    if (head < 0)
+        return scr->xine_info.primary_head;
+
+	return head;
 }
 
 int wGetHeadForPointerLocation(WScreen * scr)

src/xinerama.h

@@ -41,6 +41,8 @@ int wGetHeadForRect(WScreen *scr, WMRect rect);
 
 int wGetHeadForWindow(WWindow *wwin);
 
+int wGetHeadForPointOrNegative(WScreen * scr, WMPoint point);
+
 int wGetHeadForPoint(WScreen *scr, WMPoint point);
 
 int wGetHeadForPointerLocation(WScreen *scr);