[gtk+] GDK W32: Fix shown window position calculation for dialogs and splashes

[Руслан Ижбулатов <ruslanizhb src gnome org>]

commit 5ac848d2297d5afc20315cb6c461aeedf0fd6b8a
Author: Руслан Ижбулатов <lrn1986 gmail com>
Date:   Mon Mar 14 16:14:22 2016 +0000

    GDK W32: Fix shown window position calculation for dialogs and splashes
    
    Two errors here:
    1) A typo in splashscreen rectangle calculation - sets right twice
       instead of setting top
    2) Centering for dialogs is off because it doesn't convert
       GDK virtual desktop coordinates to Windows WM virtual desktop
       coordinates by adding _gdk_offset_*
    
    https://bugzilla.gnome.org/show_bug.cgi?id=763628

 gdk/win32/gdkwindow-win32.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/gdk/win32/gdkwindow-win32.c b/gdk/win32/gdkwindow-win32.c
index 353602e..d112d32 100644
--- a/gdk/win32/gdkwindow-win32.c
+++ b/gdk/win32/gdkwindow-win32.c
@@ -1207,7 +1207,7 @@ show_window_internal (GdkWindow *window,
          else
            {
              center_on_rect.left = 0;
-             center_on_rect.right = 0;
+             center_on_rect.top = 0;
              center_on_rect.right = GetSystemMetrics (SM_CXSCREEN);
              center_on_rect.bottom = GetSystemMetrics (SM_CYSCREEN);
            }
@@ -1218,8 +1218,8 @@ show_window_internal (GdkWindow *window,
        {
          GdkWindow *owner = window_impl->transient_owner;
          /* Center on transient parent */
-         center_on_rect.left = owner->x;
-         center_on_rect.top = owner->y;
+         center_on_rect.left = owner->x - _gdk_offset_x;
+         center_on_rect.top = owner->y - _gdk_offset_y;
          center_on_rect.right = center_on_rect.left + owner->width;
          center_on_rect.bottom = center_on_rect.top + owner->height;
          _gdk_win32_adjust_client_rect (GDK_WINDOW (owner), &center_on_rect);