[gtk+] W32: avoid code duplication in gdkdevice-win32|virtual

[Ignacio Casal Quinteiro <icq src gnome org>]

commit 7f17468afc761ae63f1b5581c7769c9d97453f65
Author: Paolo Borelli <pborelli gnome org>
Date:   Sat Dec 19 10:31:32 2015 +0100

    W32: avoid code duplication in gdkdevice-win32|virtual
    
    The same get_position function is cut and pasted in the two
    classes.

 gdk/win32/gdkdevice-virtual.c |   96 +----------------------------------------
 gdk/win32/gdkdevice-win32.c   |   19 +++-----
 gdk/win32/gdkdevice-win32.h   |    6 +++
 3 files changed, 15 insertions(+), 106 deletions(-)
---
diff --git a/gdk/win32/gdkdevice-virtual.c b/gdk/win32/gdkdevice-virtual.c
index b947800..e6410ea 100644
--- a/gdk/win32/gdkdevice-virtual.c
+++ b/gdk/win32/gdkdevice-virtual.c
@@ -24,6 +24,7 @@
 
 #include "gdkdisplayprivate.h"
 #include "gdkdevice-virtual.h"
+#include "gdkdevice-win32.h"
 #include "gdkwin32.h"
 
 static gboolean gdk_device_virtual_get_history (GdkDevice      *device,
@@ -61,11 +62,6 @@ static GdkGrabStatus gdk_device_virtual_grab   (GdkDevice     *device,
                                                guint32        time_);
 static void          gdk_device_virtual_ungrab (GdkDevice     *device,
                                                guint32        time_);
-static GdkWindow * gdk_device_virtual_window_at_position (GdkDevice       *device,
-                                                         gdouble         *win_x,
-                                                         gdouble         *win_y,
-                                                         GdkModifierType *mask,
-                                                         gboolean         get_toplevel);
 static void      gdk_device_virtual_select_window_events (GdkDevice       *device,
                                                          GdkWindow       *window,
                                                          GdkEventMask     event_mask);
@@ -85,7 +81,7 @@ gdk_device_virtual_class_init (GdkDeviceVirtualClass *klass)
   device_class->query_state = gdk_device_virtual_query_state;
   device_class->grab = gdk_device_virtual_grab;
   device_class->ungrab = gdk_device_virtual_ungrab;
-  device_class->window_at_position = gdk_device_virtual_window_at_position;
+  device_class->window_at_position = _gdk_device_win32_window_at_position;
   device_class->select_window_events = gdk_device_virtual_select_window_events;
 }
 
@@ -312,94 +308,6 @@ gdk_device_virtual_ungrab (GdkDevice *device,
 }
 
 static void
-screen_to_client (HWND hwnd, POINT screen_pt, POINT *client_pt)
-{
-  *client_pt = screen_pt;
-  ScreenToClient (hwnd, client_pt);
-}
-
-static GdkWindow *
-gdk_device_virtual_window_at_position (GdkDevice       *device,
-                                      gdouble         *win_x,
-                                      gdouble         *win_y,
-                                      GdkModifierType *mask,
-                                      gboolean         get_toplevel)
-{
-  GdkWindow *window = NULL;
-  POINT screen_pt, client_pt;
-  HWND hwnd, hwndc;
-  RECT rect;
-
-  GetCursorPos (&screen_pt);
-
-  if (get_toplevel)
-    {
-      /* Only consider visible children of the desktop to avoid the various
-       * non-visible windows you often find on a running Windows box. These
-       * might overlap our windows and cause our walk to fail. As we assume
-       * WindowFromPoint() can find our windows, we follow similar logic
-       * here, and ignore invisible and disabled windows.
-       */
-      hwnd = GetDesktopWindow ();
-      do {
-        window = gdk_win32_handle_table_lookup (hwnd);
-
-        if (window != NULL &&
-            GDK_WINDOW_TYPE (window) != GDK_WINDOW_ROOT &&
-            GDK_WINDOW_TYPE (window) != GDK_WINDOW_FOREIGN)
-          break;
-
-        screen_to_client (hwnd, screen_pt, &client_pt);
-        hwndc = ChildWindowFromPointEx (hwnd, client_pt, CWP_SKIPDISABLED  |
-                                                         CWP_SKIPINVISIBLE);
-
-       /* Verify that we're really inside the client area of the window */
-       if (hwndc != hwnd)
-         {
-           GetClientRect (hwndc, &rect);
-           screen_to_client (hwndc, screen_pt, &client_pt);
-           if (!PtInRect (&rect, client_pt))
-             hwndc = hwnd;
-         }
-
-      } while (hwndc != hwnd && (hwnd = hwndc, 1));
-
-    }
-  else
-    {
-      hwnd = WindowFromPoint (screen_pt);
-
-      /* Verify that we're really inside the client area of the window */
-      GetClientRect (hwnd, &rect);
-      screen_to_client (hwnd, screen_pt, &client_pt);
-      if (!PtInRect (&rect, client_pt))
-       hwnd = NULL;
-
-      /* If we didn't hit any window at that point, return the desktop */
-      if (hwnd == NULL)
-        {
-          if (win_x)
-            *win_x = screen_pt.x + _gdk_offset_x;
-          if (win_y)
-            *win_y = screen_pt.y + _gdk_offset_y;
-          return _gdk_root;
-        }
-
-      window = gdk_win32_handle_table_lookup (hwnd);
-    }
-
-  if (window && (win_x || win_y))
-    {
-      if (win_x)
-        *win_x = client_pt.x;
-      if (win_y)
-        *win_y = client_pt.y;
-    }
-
-  return window;
-}
-
-static void
 gdk_device_virtual_select_window_events (GdkDevice    *device,
                                         GdkWindow    *window,
                                         GdkEventMask  event_mask)
diff --git a/gdk/win32/gdkdevice-win32.c b/gdk/win32/gdkdevice-win32.c
index 3554a7a..d27034c 100644
--- a/gdk/win32/gdkdevice-win32.c
+++ b/gdk/win32/gdkdevice-win32.c
@@ -61,11 +61,6 @@ static GdkGrabStatus gdk_device_win32_grab   (GdkDevice     *device,
                                               guint32        time_);
 static void          gdk_device_win32_ungrab (GdkDevice     *device,
                                               guint32        time_);
-static GdkWindow * gdk_device_win32_window_at_position (GdkDevice       *device,
-                                                        gdouble         *win_x,
-                                                        gdouble         *win_y,
-                                                        GdkModifierType *mask,
-                                                        gboolean         get_toplevel);
 static void      gdk_device_win32_select_window_events (GdkDevice       *device,
                                                         GdkWindow       *window,
                                                         GdkEventMask     event_mask);
@@ -85,7 +80,7 @@ gdk_device_win32_class_init (GdkDeviceWin32Class *klass)
   device_class->query_state = gdk_device_win32_query_state;
   device_class->grab = gdk_device_win32_grab;
   device_class->ungrab = gdk_device_win32_ungrab;
-  device_class->window_at_position = gdk_device_win32_window_at_position;
+  device_class->window_at_position = _gdk_device_win32_window_at_position;
   device_class->select_window_events = gdk_device_win32_select_window_events;
 }
 
@@ -263,12 +258,12 @@ screen_to_client (HWND hwnd, POINT screen_pt, POINT *client_pt)
   ScreenToClient (hwnd, client_pt);
 }
 
-static GdkWindow *
-gdk_device_win32_window_at_position (GdkDevice       *device,
-                                     gdouble         *win_x,
-                                     gdouble         *win_y,
-                                     GdkModifierType *mask,
-                                     gboolean         get_toplevel)
+GdkWindow *
+_gdk_device_win32_window_at_position (GdkDevice       *device,
+                                      gdouble         *win_x,
+                                      gdouble         *win_y,
+                                      GdkModifierType *mask,
+                                      gboolean         get_toplevel)
 {
   GdkWindow *window = NULL;
   POINT screen_pt, client_pt;
diff --git a/gdk/win32/gdkdevice-win32.h b/gdk/win32/gdkdevice-win32.h
index a32fced..b1dd80d 100644
--- a/gdk/win32/gdkdevice-win32.h
+++ b/gdk/win32/gdkdevice-win32.h
@@ -44,6 +44,12 @@ struct _GdkDeviceWin32Class
 
 GType gdk_device_win32_get_type (void) G_GNUC_CONST;
 
+GdkWindow *_gdk_device_win32_window_at_position (GdkDevice       *device,
+                                                 gdouble         *win_x,
+                                                 gdouble         *win_y,
+                                                 GdkModifierType *mask,
+                                                 gboolean         get_toplevel);
+
 G_END_DECLS
 
 #endif /* __GDK_DEVICE_WIN32_H__ */