[gtk+/wip/attachment: 1/3] gdkwindow: add attachment data structures

[William Hua <williamhua src gnome org>]

commit f03ce00b2312fd93a79ef1b23079ed9c955d1b9b
Author: William Hua <william hua canonical com>
Date:   Sat Sep 12 00:38:16 2015 -0400

    gdkwindow: add attachment data structures

 gdk/gdkwindow.c |   90 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 gdk/gdkwindow.h |   61 +++++++++++++++++++++++++++++++++++++
 2 files changed, 151 insertions(+), 0 deletions(-)
---
diff --git a/gdk/gdkwindow.c b/gdk/gdkwindow.c
index 44c30d1..e8cc0f1 100644
--- a/gdk/gdkwindow.c
+++ b/gdk/gdkwindow.c
@@ -11461,3 +11461,93 @@ gdk_window_show_window_menu (GdkWindow *window,
   else
     return FALSE;
 }
+
+static GdkAttachmentConstraint *
+gdk_attachment_constraint_new (GdkAttachmentVariable variable,
+                               gint                  value)
+{
+  GdkAttachmentConstraint *constraint = g_new (GdkAttachmentConstraint, 1);
+
+  constraint->variable = variable;
+  constraint->value = value;
+
+  return constraint;
+}
+
+static gpointer
+gdk_attachment_constraint_copy (gconstpointer pointer,
+                                gpointer      unused)
+{
+  const GdkAttachmentConstraint *constraint = pointer;
+
+  g_return_val_if_fail (constraint != NULL, NULL);
+
+  return gdk_attachment_constraint_new (constraint->variable, constraint->value);
+}
+
+static void
+gdk_attachment_constraint_free (gpointer pointer)
+{
+  g_free (pointer);
+}
+
+GdkAttachmentParameters *
+gdk_attachment_parameters_new (void)
+{
+  return g_new0 (GdkAttachmentParameters, 1);
+}
+
+gpointer
+gdk_attachment_parameters_copy (gconstpointer pointer,
+                                gpointer      unused)
+{
+  const GdkAttachmentParameters *parameters = pointer;
+  GdkAttachmentParameters *copy;
+
+  g_return_val_if_fail (parameters != NULL, NULL);
+
+  copy = gdk_attachment_parameters_new ();
+
+  copy->primary_constraints = g_list_copy_deep (parameters->primary_constraints, 
gdk_attachment_constraint_copy, NULL);
+  copy->secondary_constraints = g_list_copy_deep (parameters->secondary_constraints, 
gdk_attachment_constraint_copy, NULL);
+  copy->window_padding = parameters->window_padding;
+  copy->offset_callback = parameters->offset_callback;
+
+  return copy;
+}
+
+void
+gdk_attachment_parameters_free (gpointer pointer)
+{
+  GdkAttachmentParameters *parameters = pointer;
+
+  if (!parameters)
+    return;
+
+  g_list_free_full (parameters->secondary_constraints, gdk_attachment_constraint_free);
+  g_list_free_full (parameters->primary_constraints, gdk_attachment_constraint_free);
+
+  g_free (parameters);
+}
+
+void
+gdk_attachment_parameters_add_primary_constraint (GdkAttachmentParameters *parameters,
+                                                  GdkAttachmentVariable    variable,
+                                                  gint                     value)
+{
+  g_return_if_fail (parameters != NULL);
+
+  parameters->primary_constraints = g_list_append (parameters->primary_constraints,
+                                                   gdk_attachment_constraint_new (variable, value));
+}
+
+void
+gdk_attachment_parameters_add_secondary_constraint (GdkAttachmentParameters *parameters,
+                                                    GdkAttachmentVariable    variable,
+                                                    gint                     value)
+{
+  g_return_if_fail (parameters != NULL);
+
+  parameters->secondary_constraints = g_list_append (parameters->secondary_constraints,
+                                                     gdk_attachment_constraint_new (variable, value));
+}
diff --git a/gdk/gdkwindow.h b/gdk/gdkwindow.h
index 7eee684..088a0d8 100644
--- a/gdk/gdkwindow.h
+++ b/gdk/gdkwindow.h
@@ -463,6 +463,47 @@ struct _GdkGeometry
   GdkGravity win_gravity;
 };
 
+typedef enum _GdkAttachmentVariable GdkAttachmentVariable;
+typedef struct _GdkAttachmentConstraint GdkAttachmentConstraint;
+typedef struct _GdkAttachmentPadding GdkAttachmentPadding;
+typedef struct _GdkAttachmentParameters GdkAttachmentParameters;
+typedef void (*GdkAttachmentOffsetCallback) (GdkWindow *window,
+                                             gint       delta_x,
+                                             gint       delta_y);
+
+enum _GdkAttachmentVariable
+{
+  GDK_X_MIN,
+  GDK_X_MID,
+  GDK_X_MAX,
+  GDK_Y_MIN,
+  GDK_Y_MID,
+  GDK_Y_MAX
+};
+
+struct _GdkAttachmentConstraint
+{
+  GdkAttachmentVariable variable;
+  gint value;
+};
+
+struct _GdkAttachmentPadding
+{
+  gint top;
+  gint left;
+  gint right;
+  gint bottom;
+};
+
+struct _GdkAttachmentParameters
+{
+  GdkPoint parent_origin;
+  GList *primary_constraints;
+  GList *secondary_constraints;
+  GdkAttachmentPadding window_padding;
+  GdkAttachmentOffsetCallback offset_callback;
+};
+
 typedef struct _GdkWindowClass GdkWindowClass;
 
 #define GDK_TYPE_WINDOW              (gdk_window_get_type ())
@@ -1124,6 +1165,26 @@ GDK_AVAILABLE_IN_3_16
 GdkGLContext * gdk_window_create_gl_context    (GdkWindow      *window,
                                                 GError        **error);
 
+GDK_AVAILABLE_IN_3_18
+GdkAttachmentParameters * gdk_attachment_parameters_new                      (void);
+
+GDK_AVAILABLE_IN_3_18
+gpointer                  gdk_attachment_parameters_copy                     (gconstpointer            
parameters,
+                                                                              gpointer                 
unused);
+
+GDK_AVAILABLE_IN_3_18
+void                      gdk_attachment_parameters_free                     (gpointer                 
parameters);
+
+GDK_AVAILABLE_IN_3_18
+void                      gdk_attachment_parameters_add_primary_constraint   (GdkAttachmentParameters 
*parameters,
+                                                                              GdkAttachmentVariable    
variable,
+                                                                              gint                     
value);
+
+GDK_AVAILABLE_IN_3_18
+void                      gdk_attachment_parameters_add_secondary_constraint (GdkAttachmentParameters 
*parameters,
+                                                                              GdkAttachmentVariable    
variable,
+                                                                              gint                     
value);
+
 G_END_DECLS
 
 #endif /* __GDK_WINDOW_H__ */