core: Add a in-tree copy of GtkBorder

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2407>

src/core/frame.c

@@ -345,7 +345,7 @@ meta_frame_query_borders (MetaFrame        *frame,
 
   if (res == Success && nitems == 4)
     {
-      borders->invisible = (GtkBorder) {
+      borders->invisible = (MetaFrameBorder) {
         ((long *) data)[0],
         ((long *) data)[1],
         ((long *) data)[2],
@@ -371,7 +371,7 @@ meta_frame_query_borders (MetaFrame        *frame,
 
   if (res == Success && nitems == 4)
     {
-      borders->visible = (GtkBorder) {
+      borders->visible = (MetaFrameBorder) {
         ((long *) data)[0],
         ((long *) data)[1],
         ((long *) data)[2],
@@ -381,7 +381,7 @@ meta_frame_query_borders (MetaFrame        *frame,
 
   g_clear_pointer (&data, XFree);
 
-  borders->total = (GtkBorder) {
+  borders->total = (MetaFrameBorder) {
     borders->invisible.left + frame->cached_borders.visible.left,
     borders->invisible.right + frame->cached_borders.visible.right,
     borders->invisible.top + frame->cached_borders.visible.top,

src/core/window-private.h

@@ -278,7 +278,7 @@ struct _MetaWindow
   Window user_time_window;
 
   gboolean has_custom_frame_extents;
-  GtkBorder custom_frame_extents;
+  MetaFrameBorder custom_frame_extents;
 
   /* The rectangles here are in "frame rect" coordinates. See the
    * comment at the top of meta_window_move_resize_internal() for more

src/core/window.c

@@ -4354,7 +4354,7 @@ meta_window_client_rect_to_frame_rect (MetaWindow    *window,
     }
   else
     {
-      const GtkBorder *extents = &window->custom_frame_extents;
+      const MetaFrameBorder *extents = &window->custom_frame_extents;
       frame_rect->x += extents->left;
       frame_rect->y += extents->top;
       if (frame_rect->width != G_MAXINT)
@@ -4395,7 +4395,7 @@ meta_window_frame_rect_to_client_rect (MetaWindow    *window,
     }
   else
     {
-      const GtkBorder *extents = &window->custom_frame_extents;
+      const MetaFrameBorder *extents = &window->custom_frame_extents;
       client_rect->x -= extents->left;
       client_rect->y -= extents->top;
       client_rect->width += extents->left + extents->right;

src/meta/common.h

@@ -70,6 +70,21 @@ struct _MetaButtonLayout
   gboolean right_buttons_has_spacer[MAX_BUTTONS_PER_CORNER];
 };
 
+/**
+ * MetaFrameBorder:
+ * @left: left border
+ * @right: right border
+ * @top: top border
+ * @bottom: bottom border
+ */
+typedef struct _MetaFrameBorder
+{
+  int16_t left;
+  int16_t right;
+  int16_t top;
+  int16_t bottom;
+} MetaFrameBorder;
+
 /**
  * MetaFrameBorders:
  * @visible: inner visible portion of frame border
@@ -82,12 +97,12 @@ struct _MetaFrameBorders
   /* The frame border is made up of two pieces - an inner visible portion
    * and an outer portion that is invisible but responds to events.
    */
-  GtkBorder visible;
+  MetaFrameBorder visible;
-  GtkBorder invisible;
+  MetaFrameBorder invisible;
 
   /* For convenience, we have a "total" border which is equal to the sum
    * of the two borders above. */
-  GtkBorder total;
+  MetaFrameBorder total;
 };
 
 /* sets all dimensions to zero */

src/wayland/meta-window-wayland.c

@@ -1163,7 +1163,7 @@ meta_window_wayland_finish_move_resize (MetaWindow              *window,
     }
   else
     {
-      window->custom_frame_extents = (GtkBorder) { 0 };
+      window->custom_frame_extents = (MetaFrameBorder) { 0 };
     }
 
   flags = META_MOVE_RESIZE_WAYLAND_FINISH_MOVE_RESIZE;

src/x11/window-props.c

@@ -347,14 +347,14 @@ reload_icon_geometry (MetaWindow    *window,
 }
 
 static void
-meta_window_set_custom_frame_extents (MetaWindow *window,
+meta_window_set_custom_frame_extents (MetaWindow      *window,
-                                      GtkBorder  *extents,
+                                      MetaFrameBorder *extents,
-                                      gboolean    is_initial)
+                                      gboolean         is_initial)
 {
   if (extents)
     {
       if (window->has_custom_frame_extents &&
-          memcmp (&window->custom_frame_extents, extents, sizeof (GtkBorder)) == 0)
+          memcmp (&window->custom_frame_extents, extents, sizeof (MetaFrameBorder)) == 0)
         return;
 
       window->has_custom_frame_extents = TRUE;
@@ -397,7 +397,7 @@ reload_gtk_frame_extents (MetaWindow    *window,
         }
       else
         {
-          GtkBorder extents;
+          MetaFrameBorder extents;
           extents.left   = (int)value->v.cardinal_list.cardinals[0];
           extents.right  = (int)value->v.cardinal_list.cardinals[1];
           extents.top    = (int)value->v.cardinal_list.cardinals[2];