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Bug 588449 - DnD doesn't work on GDK/Quartz

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Patch from Paul Davis.  This gets the basics of drag and drop properly
working on Mac OS X.
This commit is contained in:
Kristian Rietveld 2009-09-30 15:07:37 +02:00
parent 31771cc640
commit a4145bfeef
3 changed files with 132 additions and 38 deletions
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30
gdk/quartz/GdkQuartzWindow.c
View File

@ -401,8 +401,29 @@ drag_operation_to_drag_action (NSDragOperation operation)
{
GdkDragAction result = 0;
/* GDK and Quartz drag operations do not map 1:1.
* This mapping represents about the best that we
* can come up.
*
* Note that NSDragOperationPrivate and GDK_ACTION_PRIVATE
* have almost opposite meanings: the GDK one means that the
* destination is solely responsible for the action; the Quartz
* one means that the source and destination will agree
* privately on the action. NSOperationGeneric is close in meaning
* to GDK_ACTION_PRIVATE but there is a problem: it will be
* sent for any ordinary drag, and likely not understood
* by any intra-widget drag (since the source & dest are the
* same).
*/
if (operation & NSDragOperationGeneric)
result |= GDK_ACTION_MOVE;
if (operation & NSDragOperationCopy)
result |= GDK_ACTION_COPY;
if (operation & NSDragOperationMove)
result |= GDK_ACTION_MOVE;
if (operation & NSDragOperationLink)
result |= GDK_ACTION_LINK;
return result;
}
@ -414,6 +435,10 @@ drag_action_to_drag_operation (GdkDragAction action)
if (action & GDK_ACTION_COPY)
result |= NSDragOperationCopy;
if (action & GDK_ACTION_LINK)
result |= NSDragOperationLink;
if (action & GDK_ACTION_MOVE)
result |= NSDragOperationMove;
return result;
}
@ -425,6 +450,7 @@ update_context_from_dragging_info (id <NSDraggingInfo> sender)
GDK_DRAG_CONTEXT_PRIVATE (current_context)->dragging_info = sender;
current_context->suggested_action = drag_operation_to_drag_action ([sender draggingSourceOperationMask]);
current_context->actions = current_context->suggested_action;
}
- (NSDragOperation)draggingEntered:(id <NSDraggingInfo>)sender
@ -450,6 +476,10 @@ update_context_from_dragging_info (id <NSDraggingInfo> sender)
- (void)draggingEnded:(id <NSDraggingInfo>)sender
{
/* leave a note for the source about what action was taken */
if (_gdk_quartz_drag_source_context && current_context)
_gdk_quartz_drag_source_context->action = current_context->action;
if (current_context)
g_object_unref (current_context);
current_context = NULL;

6
gdk/quartz/gdkdnd-quartz.c
View File

@ -101,6 +101,12 @@ gdk_drag_context_unref (GdkDragContext *context)
GdkDragContext *_gdk_quartz_drag_source_context = NULL;
GdkDragContext *
gdk_quartz_drag_source_context ()
{
return _gdk_quartz_drag_source_context;
}
GdkDragContext *
gdk_drag_begin (GdkWindow *window,
GList *targets)

128
gtk/gtkdnd-quartz.c
View File

@ -63,6 +63,11 @@ static GtkDragDestInfo *gtk_drag_get_dest_info (GdkDragContext *context,
gboolean create);
static void gtk_drag_source_site_destroy (gpointer data);
static GtkDragSourceInfo *gtk_drag_get_source_info (GdkDragContext *context,
gboolean create);
extern GdkDragContext *gdk_quartz_drag_source_context (); /* gdk/quartz/gdkdnd-quartz.c */
struct _GtkDragSourceSite
{
GdkModifierType start_button_mask;
@ -89,13 +94,16 @@ struct _GtkDragSourceSite
struct _GtkDragSourceInfo
{
GtkWidget *source_widget;
GtkWidget *widget;
GtkTargetList *target_list; /* Targets for drag data */
GdkDragAction possible_actions; /* Actions allowed by source */
GdkDragContext *context; /* drag context */
NSEvent *nsevent; /* what started it */
gint hot_x, hot_y; /* Hot spot for drag */
GdkPixbuf *icon_pixbuf;
gboolean success;
gboolean delete;
};
struct _GtkDragDestSite
@ -233,19 +241,24 @@ gtk_drag_get_data (GtkWidget *widget,
}
}
GtkWidget *
gtk_drag_get_source_widget (GdkDragContext *context)
{
return NULL;
}
void
gtk_drag_finish (GdkDragContext *context,
gboolean success,
gboolean del,
guint32 time)
{
GtkDragSourceInfo *info;
GdkDragContext* source_context = gdk_quartz_drag_source_context ();
if (source_context)
{
info = gtk_drag_get_source_info (source_context, FALSE);
if (info)
{
info->success = success;
info->delete = del;
}
}
}
static void
@ -307,6 +320,22 @@ gtk_drag_clear_source_info (GdkDragContext *context)
g_object_set_qdata (G_OBJECT (context), dest_info_quark, NULL);
}
GtkWidget *
gtk_drag_get_source_widget (GdkDragContext *context)
{
GtkDragSourceInfo *info;
GdkDragContext* real_source_context = gdk_quartz_drag_source_context();
if (!real_source_context)
return NULL;
info = gtk_drag_get_source_info (real_source_context, FALSE);
if (!info)
return NULL;
return info->source_widget;
}
/*************************************************************
* gtk_drag_highlight_expose:
* Callback for expose_event for highlighted widgets.
@ -1031,6 +1060,45 @@ gtk_drag_dest_find_target (GtkWidget *widget,
return GDK_NONE;
}
static gboolean
gtk_drag_begin_idle (gpointer arg)
{
GdkDragContext* context = (GdkDragContext*) arg;
GtkDragSourceInfo* info = gtk_drag_get_source_info (context, FALSE);
NSWindow *nswindow;
NSPasteboard *pasteboard;
GtkDragSourceOwner *owner;
NSPoint point;
g_assert (info != NULL);
pasteboard = [NSPasteboard pasteboardWithName:NSDragPboard];
owner = [[GtkDragSourceOwner alloc] initWithInfo:info];
[pasteboard declareTypes:_gtk_quartz_target_list_to_pasteboard_types (info->target_list) owner:owner];
if ((nswindow = get_toplevel_nswindow (info->source_widget)) == NULL)
return FALSE;
/* Ref the context. It's unreffed when the drag has been aborted */
g_object_ref (info->context);
/* FIXME: If the event isn't a mouse event, use the global cursor position instead */
point = [info->nsevent locationInWindow];
[nswindow dragImage:_gtk_quartz_create_image_from_pixbuf (info->icon_pixbuf)
at:point
offset:NSMakeSize(0, 0)
event:info->nsevent
pasteboard:pasteboard
source:nswindow
slideBack:YES];
[info->nsevent release];
return FALSE;
}
static GdkDragContext *
gtk_drag_begin_internal (GtkWidget *widget,
GtkDragSourceSite *site,
@ -1042,16 +1110,13 @@ gtk_drag_begin_internal (GtkWidget *widget,
GtkDragSourceInfo *info;
GdkDragContext *context;
NSWindow *nswindow;
NSPasteboard *pasteboard;
GtkDragSourceOwner *owner;
NSEvent *nsevent;
NSPoint point;
context = gdk_drag_begin (NULL, NULL);
context->is_source = TRUE;
info = gtk_drag_get_source_info (context, TRUE);
info->source_widget = g_object_ref (widget);
info->widget = g_object_ref (widget);
info->target_list = target_list;
gtk_target_list_ref (target_list);
@ -1117,31 +1182,17 @@ gtk_drag_begin_internal (GtkWidget *widget,
}
}
nswindow = get_toplevel_nswindow (widget);
info->nsevent = [nswindow currentEvent];
[info->nsevent retain];
/* drag will begin in an idle handler to avoid nested run loops */
g_idle_add_full (G_PRIORITY_HIGH_IDLE, gtk_drag_begin_idle, context, NULL);
gdk_pointer_ungrab (0);
pasteboard = [NSPasteboard pasteboardWithName:NSDragPboard];
owner = [[GtkDragSourceOwner alloc] initWithInfo:info];
[pasteboard declareTypes:_gtk_quartz_target_list_to_pasteboard_types (target_list) owner:owner];
/* Ref the context. It's unreffed when the drag has been aborted */
g_object_ref (info->context);
nswindow = get_toplevel_nswindow (widget);
/* FIXME: If the event isn't a mouse event, use the global cursor position instead */
nsevent = [nswindow currentEvent];
point = [nsevent locationInWindow];
[nswindow dragImage:_gtk_quartz_create_image_from_pixbuf (info->icon_pixbuf)
at:point
offset:NSMakeSize(0, 0)
event:nsevent
pasteboard:pasteboard
source:nswindow
slideBack:YES];
return info->context;
return context;
}
GdkDragContext *
@ -1773,6 +1824,9 @@ gtk_drag_source_info_destroy (GtkDragSourceInfo *info)
g_signal_emit_by_name (info->widget, "drag-end",
info->context);
if (info->source_widget)
g_object_unref (info->source_widget);
if (info->widget)
g_object_unref (info->widget);
@ -1794,6 +1848,10 @@ drag_drop_finished_idle_cb (gpointer data)
static void
gtk_drag_drop_finished (GtkDragSourceInfo *info)
{
if (info->success && info->delete)
g_signal_emit_by_name (info->source_widget, "drag-data-delete",
info->context);
/* Workaround for the fact that the NS API blocks until the drag is
* over. This way the context is still valid when returning from
* drag_begin, even if it will still be quite useless. See bug #501588.