From 493f5d6b1856229196ccc70362e35376bae085a6 Mon Sep 17 00:00:00 2001
From: Matthias Clasen <mclasen@redhat.com>
Date: Mon, 23 Oct 2017 14:16:31 +0200
Subject: [PATCH] dnd: Add more surface apis

The new function, gtk_drag_source_set_icon_surface, is for setting
a drag source icon without using GdkPixbuf.
---
 docs/reference/gtk/gtk4-sections.txt |  1 +
 gtk/gtkdragsource.c                  | 26 ++++++++++++++++++++++++++
 gtk/gtkdragsource.h                  |  3 +++
 3 files changed, 30 insertions(+)

diff --git a/docs/reference/gtk/gtk4-sections.txt b/docs/reference/gtk/gtk4-sections.txt
index e88cb0b6dc..186dea70bd 100644
--- a/docs/reference/gtk/gtk4-sections.txt
+++ b/docs/reference/gtk/gtk4-sections.txt
@@ -5365,6 +5365,7 @@ gtk_drag_set_icon_default
 gtk_drag_check_threshold
 gtk_drag_source_set
 gtk_drag_source_set_icon_pixbuf
+gtk_drag_source_set_icon_surface
 gtk_drag_source_set_icon_name
 gtk_drag_source_set_icon_gicon
 gtk_drag_source_unset
diff --git a/gtk/gtkdragsource.c b/gtk/gtkdragsource.c
index e6bc185797..4c701b4599 100644
--- a/gtk/gtkdragsource.c
+++ b/gtk/gtkdragsource.c
@@ -373,6 +373,32 @@ gtk_drag_source_set_icon_pixbuf (GtkWidget *widget,
   site->image_def = gtk_image_definition_new_pixbuf (pixbuf, 1);
 }
 
+/**
+ * gtk_drag_source_set_icon_surface: (method)
+ * @widget: a #GtkWidget
+ * @surface: the cairo surface for the drag icon
+ * 
+ * Sets the icon that will be used for drags from a particular widget
+ * from a cairo surface. GTK+ retains a reference for @surface and will
+ * release it when it is no longer needed.
+ *
+ * Since: 3.94
+ */
+void
+gtk_drag_source_set_icon_surface (GtkWidget       *widget,
+                                  cairo_surface_t *surface)
+{
+  GtkDragSourceSite *site;
+
+  g_return_if_fail (GTK_IS_WIDGET (widget));
+
+  site = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
+  g_return_if_fail (site != NULL);
+
+  g_clear_pointer (&site->image_def, gtk_image_definition_unref);
+  site->image_def = gtk_image_definition_new_surface (surface);
+}
+
 /**
  * gtk_drag_source_set_icon_name: (method)
  * @widget: a #GtkWidget
diff --git a/gtk/gtkdragsource.h b/gtk/gtkdragsource.h
index 2e3e2c39fb..cca2a9784c 100644
--- a/gtk/gtkdragsource.h
+++ b/gtk/gtkdragsource.h
@@ -62,6 +62,9 @@ void           gtk_drag_source_add_uri_targets   (GtkWidget    *widget);
 GDK_AVAILABLE_IN_ALL
 void gtk_drag_source_set_icon_pixbuf  (GtkWidget       *widget,
 				       GdkPixbuf       *pixbuf);
+GDK_AVAILABLE_IN_3_94
+void gtk_drag_source_set_icon_surface (GtkWidget       *widget,
+                                       cairo_surface_t *surface);
 GDK_AVAILABLE_IN_ALL
 void gtk_drag_source_set_icon_name    (GtkWidget       *widget,
 				       const gchar     *icon_name);
-- 
2.30.2