Patch by Wim van der Meer: Implemented global Interface Kit function to retrieve

the current mouse position and pressed buttons. I've changed the return code
to status_t and added anal error checking, most of the rest of the file is not
doing it, though... :-) Thanks, Wim!


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36811 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/os/interface/InterfaceDefs.h

@@ -10,6 +10,7 @@
 #include <OS.h>
 
 class BRect;
+class BPoint;
 
 
 // some handy UTF-8 characters
@@ -380,6 +381,8 @@ mode_mouse		mouse_mode();
 void			set_focus_follows_mouse_mode(mode_focus_follows_mouse mode);
 mode_focus_follows_mouse	focus_follows_mouse_mode();
 
+status_t		get_mouse(BPoint* screenWhere, uint32* buttons);
+
 void			set_accept_first_click(bool acceptFirstClick);
 bool			accept_first_click();
 

headers/private/app/ServerProtocol.h

@@ -81,6 +81,8 @@ enum {
 
 	AS_BEGIN_RECT_TRACKING,
 	AS_END_RECT_TRACKING,
+	
+	AS_GET_CURSOR_POSITION,
 
 	// Window definitions
 	AS_SHOW_WINDOW,

src/kits/interface/InterfaceDefs.cpp

@@ -7,6 +7,7 @@
  *		Caz <turok2@currantbun.com>
  *		Axel Dörfler, axeld@pinc-software.de
  *		Michael Lotz <mmlr@mlotz.ch>
+ *		Wim van der Meer <WPJvanderMeer@gmail.com>
  */
 
 
@@ -23,9 +24,10 @@
 #include <ControlLook.h>
 #include <Font.h>
 #include <Menu.h>
+#include <Point.h>
 #include <Roster.h>
-#include <ScrollBar.h>
 #include <Screen.h>
+#include <ScrollBar.h>
 #include <String.h>
 #include <TextView.h>
 
@@ -925,6 +927,42 @@ focus_follows_mouse_mode()
 }
 
 
+status_t
+get_mouse(BPoint* screenWhere, uint32* buttons)
+{
+	if (screenWhere == NULL && buttons == NULL)
+		return B_BAD_VALUE;
+
+	BPrivate::AppServerLink link;
+	link.StartMessage(AS_GET_CURSOR_POSITION);
+	
+	int32 code;
+	status_t ret = link.FlushWithReply(code);
+	if (ret != B_OK)
+		return ret;
+	if (code != B_OK)
+		return code;
+
+	if (screenWhere != NULL)
+		ret = link.Read<BPoint>(screenWhere);
+	else {
+		BPoint dummy;
+		ret = link.Read<BPoint>(&dummy);
+	}
+	if (ret != B_OK)
+		return ret;
+
+	if (buttons != NULL)
+		ret = link.Read<uint32>(buttons);
+	else {
+		uint32 dummy;
+		ret = link.Read<uint32>(&dummy);
+	}
+
+	return ret;
+}
+
+
 void
 set_accept_first_click(bool acceptFirstClick)
 {

src/servers/app/ProfileMessageSupport.cpp

@@ -61,6 +61,8 @@ string_for_message_code(uint32 code, BString& string)
 
 		CODE(AS_BEGIN_RECT_TRACKING);
 		CODE(AS_END_RECT_TRACKING);
+		
+		CODE(AS_GET_CURSOR_POSITION);
 
 		// Window definitions
 		CODE(AS_SHOW_WINDOW);

src/servers/app/ServerApp.cpp

@@ -11,6 +11,7 @@
  *		Jérôme Duval, jerome.duval@free.fr
  *		Andrej Spielmann, <andrej.spielmann@seh.ox.ac.uk>
  *		Philippe Saint-Pierre, stpere@gmail.com
+ *		Wim van der Meer, <WPJvanderMeer@gmail.com>
  */
 
 
@@ -1165,7 +1166,21 @@ ServerApp::_DispatchMessage(int32 code, BPrivate::LinkReceiver& link)
 
 			break;
 		}
-
+		case AS_GET_CURSOR_POSITION:
+		{
+			STRACE(("ServerApp %s: Get Cursor position\n", Signature()));
+			// Returns
+			// 1) BPoint mouse location
+			// 2) int32 button state
+			BPoint where;
+			int32 buttons;
+			fDesktop->GetLastMouseState(&where, &buttons);
+			fLink.StartMessage(B_OK);
+			fLink.Attach<BPoint>(where);
+			fLink.Attach<int32>(buttons);
+			fLink.Flush();
+			break;
+		}
 		case AS_GET_SCROLLBAR_INFO:
 		{
 			STRACE(("ServerApp %s: Get ScrollBar info\n", Signature()));