[gtk/wip/chergert/gdk-macos-gdkdrag: 1/8] macos: register known clipboard types for drag destination

[Christian Hergert <chergert src gnome org>]

commit daa4263965bb0650f15889fc12b4fedbc21e9220
Author: Christian Hergert <chergert redhat com>
Date:   Thu Jun 17 13:23:18 2021 -0700

    macos: register known clipboard types for drag destination

 gdk/macos/GdkMacosWindow.c            |  4 ++++
 gdk/macos/gdkmacosclipboard-private.h |  1 +
 gdk/macos/gdkmacosclipboard.c         | 13 +++++++++++++
 3 files changed, 18 insertions(+)
---
diff --git a/gdk/macos/GdkMacosWindow.c b/gdk/macos/GdkMacosWindow.c
index 3afcdeb826..8f3817ee6a 100644
--- a/gdk/macos/GdkMacosWindow.c
+++ b/gdk/macos/GdkMacosWindow.c
@@ -28,6 +28,7 @@
 #import "GdkMacosGLView.h"
 #import "GdkMacosWindow.h"
 
+#include "gdkmacosclipboard-private.h"
 #include "gdkmacosdisplay-private.h"
 #include "gdkmacosmonitor-private.h"
 #include "gdkmacossurface-private.h"
@@ -287,6 +288,9 @@ typedef NSString *CALayerContentsGravity;
   [self setContentView:view];
   [view release];
 
+  /* TODO: We might want to make this more extensible at some point */
+  _gdk_macos_clipboard_register_drag_types (self);
+
   return self;
 }
 
diff --git a/gdk/macos/gdkmacosclipboard-private.h b/gdk/macos/gdkmacosclipboard-private.h
index 01a562c2b8..e612f73edd 100644
--- a/gdk/macos/gdkmacosclipboard-private.h
+++ b/gdk/macos/gdkmacosclipboard-private.h
@@ -40,6 +40,7 @@ void              _gdk_macos_clipboard_check_externally_modified (GdkMacosClipbo
 NSPasteboardType  _gdk_macos_clipboard_to_ns_type                (const char        *mime_type,
                                                                   NSPasteboardType  *alternate);
 const char       *_gdk_macos_clipboard_from_ns_type              (NSPasteboardType   ns_type);
+void              _gdk_macos_clipboard_register_drag_types       (NSWindow          *window);
 
 @interface GdkMacosClipboardDataProvider : NSObject <NSPasteboardItemDataProvider>
 {
diff --git a/gdk/macos/gdkmacosclipboard.c b/gdk/macos/gdkmacosclipboard.c
index 7ddf47d83b..ea0d19f923 100644
--- a/gdk/macos/gdkmacosclipboard.c
+++ b/gdk/macos/gdkmacosclipboard.c
@@ -622,4 +622,17 @@ on_data_ready_cb (GObject      *object,
   write_request_free (wr);
 }
 
+void
+_gdk_macos_clipboard_register_drag_types (NSWindow *window)
+{
+  [window registerForDraggedTypes:[NSArray arrayWithObjects:PTYPE(STRING),
+                                                            PTYPE(PBOARD),
+                                                            PTYPE(URL),
+                                                            PTYPE(FILE_URL),
+                                                            PTYPE(COLOR),
+                                                            PTYPE(TIFF),
+                                                            PTYPE(PNG),
+                                                            nil]];
+}
+
 @end