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gtk2/gtk/gtkclipboard-quartz.c
Matthias Clasen 945db7f6a6 Use GSlice for GtkSelectionData. (#515060, Christian Persch) 
2008-02-12  Matthias Clasen  <mclasen@redhat.com>

        * gtk/gtkclipboard-quartz.c:
        * gtkquartz.c:
        * gtkselection.c: Use GSlice for GtkSelectionData.  (#515060,
        Christian Persch)


svn path=/trunk/; revision=19533
2008-02-12 16:10:39 +00:00

1304 lines
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/* GTK - The GIMP Toolkit
* Copyright (C) 2000 Red Hat, Inc.
* Copyright (C) 2004 Nokia Corporation
* Copyright (C) 2006 Imendio AB
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
*/
#include <config.h>
#include <string.h>
#import <Cocoa/Cocoa.h>
#include "gtkclipboard.h"
#include "gtkinvisible.h"
#include "gtkmain.h"
#include "gtkmarshalers.h"
#include "gtkintl.h"
#include "gtktextbuffer.h"
#include "gtkquartz.h"
#include "gtkalias.h"
enum {
OWNER_CHANGE,
LAST_SIGNAL
};
typedef struct _GtkClipboardClass GtkClipboardClass;
struct _GtkClipboard
{
GObject parent_instance;
NSPasteboard *pasteboard;
GdkAtom selection;
GtkClipboardGetFunc get_func;
GtkClipboardClearFunc clear_func;
gpointer user_data;
gboolean have_owner;
GtkTargetList *target_list;
gboolean have_selection;
GdkDisplay *display;
GdkAtom *cached_targets;
gint n_cached_targets;
guint notify_signal_id;
gboolean storing_selection;
GMainLoop *store_loop;
guint store_timeout;
gint n_storable_targets;
GdkAtom *storable_targets;
};
struct _GtkClipboardClass
{
GObjectClass parent_class;
void (*owner_change) (GtkClipboard *clipboard,
GdkEventOwnerChange *event);
};
@interface GtkClipboardOwner : NSObject {
GtkClipboard *clipboard;
GtkClipboardGetFunc get_func;
GtkClipboardClearFunc clear_func;
gpointer user_data;
}
@end
@implementation GtkClipboardOwner
-(void)pasteboard:(NSPasteboard *)sender provideDataForType:(NSString *)type
{
GtkSelectionData selection_data;
guint info;
selection_data.selection = clipboard->selection;
selection_data.data = NULL;
selection_data.target = _gtk_quartz_pasteboard_type_to_atom (type);
if (clipboard->target_list &&
gtk_target_list_find (clipboard->target_list, selection_data.target, &info))
{
clipboard->get_func (clipboard, &selection_data,
info,
clipboard->user_data);
}
else
{
selection_data.length = -1;
}
_gtk_quartz_set_selection_data_for_pasteboard (clipboard->pasteboard,
&selection_data);
g_free (selection_data.data);
}
- (void)pasteboardChangedOwner:(NSPasteboard *)sender
{
if (clear_func)
clear_func (clipboard, user_data);
[self release];
}
- (id)initWithClipboard:(GtkClipboard *)aClipboard
{
self = [super init];
if (self)
{
clipboard = aClipboard;
}
return self;
}
@end
static void gtk_clipboard_class_init (GtkClipboardClass *class);
static void gtk_clipboard_finalize (GObject *object);
static void gtk_clipboard_owner_change (GtkClipboard *clipboard,
GdkEventOwnerChange *event);
static void clipboard_unset (GtkClipboard *clipboard);
static GtkClipboard *clipboard_peek (GdkDisplay *display,
GdkAtom selection,
gboolean only_if_exists);
static const gchar clipboards_owned_key[] = "gtk-clipboards-owned";
static GQuark clipboards_owned_key_id = 0;
static GObjectClass *parent_class;
static guint clipboard_signals[LAST_SIGNAL] = { 0 };
GType
gtk_clipboard_get_type (void)
{
static GType clipboard_type = 0;
if (!clipboard_type)
{
const GTypeInfo clipboard_info =
{
sizeof (GtkClipboardClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gtk_clipboard_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GtkClipboard),
0, /* n_preallocs */
(GInstanceInitFunc) NULL,
};
clipboard_type = g_type_register_static (G_TYPE_OBJECT, I_("GtkClipboard"),
&clipboard_info, 0);
}
return clipboard_type;
}
static void
gtk_clipboard_class_init (GtkClipboardClass *class)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (class);
parent_class = g_type_class_peek_parent (class);
gobject_class->finalize = gtk_clipboard_finalize;
class->owner_change = gtk_clipboard_owner_change;
clipboard_signals[OWNER_CHANGE] =
g_signal_new (I_("owner_change"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkClipboardClass, owner_change),
NULL, NULL,
_gtk_marshal_VOID__BOXED,
G_TYPE_NONE, 1,
GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
}
static void
gtk_clipboard_finalize (GObject *object)
{
GtkClipboard *clipboard;
GSList *clipboards;
clipboard = GTK_CLIPBOARD (object);
clipboards = g_object_get_data (G_OBJECT (clipboard->display), "gtk-clipboard-list");
if (g_slist_index (clipboards, clipboard) >= 0)
g_warning ("GtkClipboard prematurely finalized");
clipboard_unset (clipboard);
clipboards = g_object_get_data (G_OBJECT (clipboard->display), "gtk-clipboard-list");
clipboards = g_slist_remove (clipboards, clipboard);
g_object_set_data (G_OBJECT (clipboard->display), I_("gtk-clipboard-list"), clipboards);
if (clipboard->store_loop && g_main_loop_is_running (clipboard->store_loop))
g_main_loop_quit (clipboard->store_loop);
if (clipboard->store_timeout != 0)
g_source_remove (clipboard->store_timeout);
g_free (clipboard->storable_targets);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
clipboard_display_closed (GdkDisplay *display,
gboolean is_error,
GtkClipboard *clipboard)
{
GSList *clipboards;
clipboards = g_object_get_data (G_OBJECT (display), "gtk-clipboard-list");
g_object_run_dispose (G_OBJECT (clipboard));
clipboards = g_slist_remove (clipboards, clipboard);
g_object_set_data (G_OBJECT (display), I_("gtk-clipboard-list"), clipboards);
g_object_unref (clipboard);
}
/**
* gtk_clipboard_get_for_display:
* @display: the display for which the clipboard is to be retrieved or created
* @selection: a #GdkAtom which identifies the clipboard
* to use.
*
* Returns the clipboard object for the given selection.
* Cut/copy/paste menu items and keyboard shortcuts should use
* the default clipboard, returned by passing %GDK_SELECTION_CLIPBOARD for @selection.
* (%GDK_NONE is supported as a synonym for GDK_SELECTION_CLIPBOARD
* for backwards compatibility reasons.)
* The currently-selected object or text should be provided on the clipboard
* identified by #GDK_SELECTION_PRIMARY. Cut/copy/paste menu items
* conceptually copy the contents of the #GDK_SELECTION_PRIMARY clipboard
* to the default clipboard, i.e. they copy the selection to what the
* user sees as the clipboard.
*
* (Passing #GDK_NONE is the same as using <literal>gdk_atom_intern
* ("CLIPBOARD", FALSE)</literal>. See <ulink
* url="http://www.freedesktop.org/Standards/clipboards-spec">
* http://www.freedesktop.org/Standards/clipboards-spec</ulink>
* for a detailed discussion of the "CLIPBOARD" vs. "PRIMARY"
* selections under the X window system. On Win32 the
* #GDK_SELECTION_PRIMARY clipboard is essentially ignored.)
*
* It's possible to have arbitrary named clipboards; if you do invent
* new clipboards, you should prefix the selection name with an
* underscore (because the ICCCM requires that nonstandard atoms are
* underscore-prefixed), and namespace it as well. For example,
* if your application called "Foo" has a special-purpose
* clipboard, you might call it "_FOO_SPECIAL_CLIPBOARD".
*
* Return value: the appropriate clipboard object. If no
* clipboard already exists, a new one will
* be created. Once a clipboard object has
* been created, it is persistent and, since
* it is owned by GTK+, must not be freed or
* unrefd.
*
* Since: 2.2
**/
GtkClipboard *
gtk_clipboard_get_for_display (GdkDisplay *display,
GdkAtom selection)
{
g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
g_return_val_if_fail (!display->closed, NULL);
return clipboard_peek (display, selection, FALSE);
}
/**
* gtk_clipboard_get():
* @selection: a #GdkAtom which identifies the clipboard
* to use.
*
* Returns the clipboard object for the given selection.
* See gtk_clipboard_get_for_display() for complete details.
*
* Return value: the appropriate clipboard object. If no
* clipboard already exists, a new one will
* be created. Once a clipboard object has
* been created, it is persistent and, since
* it is owned by GTK+, must not be freed or
* unrefd.
**/
GtkClipboard *
gtk_clipboard_get (GdkAtom selection)
{
return gtk_clipboard_get_for_display (gdk_display_get_default (), selection);
}
static void
clipboard_owner_destroyed (gpointer data)
{
GSList *clipboards = data;
GSList *tmp_list;
tmp_list = clipboards;
while (tmp_list)
{
GtkClipboard *clipboard = tmp_list->data;
clipboard->get_func = NULL;
clipboard->clear_func = NULL;
clipboard->user_data = NULL;
clipboard->have_owner = FALSE;
if (clipboard->target_list)
{
gtk_target_list_unref (clipboard->target_list);
clipboard->target_list = NULL;
}
gtk_clipboard_clear (clipboard);
tmp_list = tmp_list->next;
}
g_slist_free (clipboards);
}
static void
clipboard_add_owner_notify (GtkClipboard *clipboard)
{
if (!clipboards_owned_key_id)
clipboards_owned_key_id = g_quark_from_static_string (clipboards_owned_key);
if (clipboard->have_owner)
g_object_set_qdata_full (clipboard->user_data, clipboards_owned_key_id,
g_slist_prepend (g_object_steal_qdata (clipboard->user_data,
clipboards_owned_key_id),
clipboard),
clipboard_owner_destroyed);
}
static void
clipboard_remove_owner_notify (GtkClipboard *clipboard)
{
if (clipboard->have_owner)
g_object_set_qdata_full (clipboard->user_data, clipboards_owned_key_id,
g_slist_remove (g_object_steal_qdata (clipboard->user_data,
clipboards_owned_key_id),
clipboard),
clipboard_owner_destroyed);
}
static gboolean
gtk_clipboard_set_contents (GtkClipboard *clipboard,
const GtkTargetEntry *targets,
guint n_targets,
GtkClipboardGetFunc get_func,
GtkClipboardClearFunc clear_func,
gpointer user_data,
gboolean have_owner)
{
GtkClipboardOwner *owner;
NSArray *types;
NSAutoreleasePool *pool;
pool = [[NSAutoreleasePool alloc] init];
owner = [[GtkClipboardOwner alloc] initWithClipboard:clipboard];
types = _gtk_quartz_target_entries_to_pasteboard_types (targets, n_targets);
clipboard->user_data = user_data;
clipboard->have_owner = have_owner;
if (have_owner)
clipboard_add_owner_notify (clipboard);
clipboard->get_func = get_func;
clipboard->clear_func = clear_func;
if (clipboard->target_list)
gtk_target_list_unref (clipboard->target_list);
clipboard->target_list = gtk_target_list_new (targets, n_targets);
[clipboard->pasteboard declareTypes:types owner:owner];
[pool release];
return TRUE;
}
/**
* gtk_clipboard_set_with_data:
* @clipboard: a #GtkClipboard
* @targets: array containing information about the available forms for the
* clipboard data
* @n_targets: number of elements in @targets
* @get_func: function to call to get the actual clipboard data
* @clear_func: when the clipboard contents are set again, this function will
* be called, and @get_func will not be subsequently called.
* @user_data: user data to pass to @get_func and @clear_func.
*
* Virtually sets the contents of the specified clipboard by providing
* a list of supported formats for the clipboard data and a function
* to call to get the actual data when it is requested.
*
* Return value: %TRUE if setting the clipboard data succeeded. If setting
* the clipboard data failed the provided callback functions
* will be ignored.
**/
gboolean
gtk_clipboard_set_with_data (GtkClipboard *clipboard,
const GtkTargetEntry *targets,
guint n_targets,
GtkClipboardGetFunc get_func,
GtkClipboardClearFunc clear_func,
gpointer user_data)
{
g_return_val_if_fail (clipboard != NULL, FALSE);
g_return_val_if_fail (targets != NULL, FALSE);
g_return_val_if_fail (get_func != NULL, FALSE);
return gtk_clipboard_set_contents (clipboard, targets, n_targets,
get_func, clear_func, user_data,
FALSE);
}
/**
* gtk_clipboard_set_with_owner:
* @clipboard: a #GtkClipboard
* @targets: array containing information about the available forms for the
* clipboard data
* @n_targets: number of elements in @targets
* @get_func: function to call to get the actual clipboard data
* @clear_func: when the clipboard contents are set again, this function will
* be called, and @get_func will not be subsequently called.
* @owner: an object that "owns" the data. This object will be passed
* to the callbacks when called.
*
* Virtually sets the contents of the specified clipboard by providing
* a list of supported formats for the clipboard data and a function
* to call to get the actual data when it is requested.
*
* The difference between this function and gtk_clipboard_set_with_data()
* is that instead of an generic @user_data pointer, a #GObject is passed
* in.
*
* Return value: %TRUE if setting the clipboard data succeeded. If setting
* the clipboard data failed the provided callback functions
* will be ignored.
**/
gboolean
gtk_clipboard_set_with_owner (GtkClipboard *clipboard,
const GtkTargetEntry *targets,
guint n_targets,
GtkClipboardGetFunc get_func,
GtkClipboardClearFunc clear_func,
GObject *owner)
{
g_return_val_if_fail (clipboard != NULL, FALSE);
g_return_val_if_fail (targets != NULL, FALSE);
g_return_val_if_fail (get_func != NULL, FALSE);
g_return_val_if_fail (G_IS_OBJECT (owner), FALSE);
return gtk_clipboard_set_contents (clipboard, targets, n_targets,
get_func, clear_func, owner,
TRUE);
}
/**
* gtk_clipboard_get_owner:
* @clipboard: a #GtkClipboard
*
* If the clipboard contents callbacks were set with
* gtk_clipboard_set_with_owner(), and the gtk_clipboard_set_with_data() or
* gtk_clipboard_clear() has not subsequently called, returns the owner set
* by gtk_clipboard_set_with_owner().
*
* Return value: the owner of the clipboard, if any; otherwise %NULL.
**/
GObject *
gtk_clipboard_get_owner (GtkClipboard *clipboard)
{
g_return_val_if_fail (clipboard != NULL, NULL);
if (clipboard->have_owner)
return clipboard->user_data;
else
return NULL;
}
static void
clipboard_unset (GtkClipboard *clipboard)
{
GtkClipboardClearFunc old_clear_func;
gpointer old_data;
gboolean old_have_owner;
gint old_n_storable_targets;
old_clear_func = clipboard->clear_func;
old_data = clipboard->user_data;
old_have_owner = clipboard->have_owner;
old_n_storable_targets = clipboard->n_storable_targets;
if (old_have_owner)
{
clipboard->have_owner = FALSE;
}
clipboard->n_storable_targets = -1;
g_free (clipboard->storable_targets);
clipboard->storable_targets = NULL;
clipboard->get_func = NULL;
clipboard->clear_func = NULL;
clipboard->user_data = NULL;
if (old_clear_func)
old_clear_func (clipboard, old_data);
if (clipboard->target_list)
{
gtk_target_list_unref (clipboard->target_list);
clipboard->target_list = NULL;
}
/* If we've transferred the clipboard data to the manager,
* unref the owner
*/
if (old_have_owner &&
old_n_storable_targets != -1)
g_object_unref (old_data);
}
/**
* gtk_clipboard_clear:
* @clipboard: a #GtkClipboard
*
* Clears the contents of the clipboard. Generally this should only
* be called between the time you call gtk_clipboard_set_with_owner()
* or gtk_clipboard_set_with_data(),
* and when the @clear_func you supplied is called. Otherwise, the
* clipboard may be owned by someone else.
**/
void
gtk_clipboard_clear (GtkClipboard *clipboard)
{
[clipboard->pasteboard declareTypes:nil owner:nil];
}
static void
text_get_func (GtkClipboard *clipboard,
GtkSelectionData *selection_data,
guint info,
gpointer data)
{
gtk_selection_data_set_text (selection_data, data, -1);
}
static void
text_clear_func (GtkClipboard *clipboard,
gpointer data)
{
g_free (data);
}
/**
* gtk_clipboard_set_text:
* @clipboard: a #GtkClipboard object
* @text: a UTF-8 string.
* @len: length of @text, in bytes, or -1, in which case
* the length will be determined with <function>strlen()</function>.
*
* Sets the contents of the clipboard to the given UTF-8 string. GTK+ will
* make a copy of the text and take responsibility for responding
* for requests for the text, and for converting the text into
* the requested format.
**/
void
gtk_clipboard_set_text (GtkClipboard *clipboard,
const gchar *text,
gint len)
{
GtkTargetEntry target = { "UTF8_STRING", 0, 0 };
g_return_if_fail (clipboard != NULL);
g_return_if_fail (text != NULL);
if (len < 0)
len = strlen (text);
gtk_clipboard_set_with_data (clipboard,
&target, 1,
text_get_func, text_clear_func,
g_strndup (text, len));
gtk_clipboard_set_can_store (clipboard, NULL, 0);
}
static void
pixbuf_get_func (GtkClipboard *clipboard,
GtkSelectionData *selection_data,
guint info,
gpointer data)
{
gtk_selection_data_set_pixbuf (selection_data, data);
}
static void
pixbuf_clear_func (GtkClipboard *clipboard,
gpointer data)
{
g_object_unref (data);
}
/**
* gtk_clipboard_set_image:
* @clipboard: a #GtkClipboard object
* @pixbuf: a #GdkPixbuf
*
* Sets the contents of the clipboard to the given #GdkPixbuf.
* GTK+ will take responsibility for responding for requests
* for the image, and for converting the image into the
* requested format.
*
* Since: 2.6
**/
void
gtk_clipboard_set_image (GtkClipboard *clipboard,
GdkPixbuf *pixbuf)
{
GtkTargetList *list;
GList *l;
GtkTargetEntry *targets;
gint n_targets, i;
g_return_if_fail (clipboard != NULL);
g_return_if_fail (GDK_IS_PIXBUF (pixbuf));
list = gtk_target_list_new (NULL, 0);
gtk_target_list_add_image_targets (list, 0, TRUE);
n_targets = g_list_length (list->list);
targets = g_new0 (GtkTargetEntry, n_targets);
for (l = list->list, i = 0; l; l = l->next, i++)
{
GtkTargetPair *pair = (GtkTargetPair *)l->data;
targets[i].target = gdk_atom_name (pair->target);
}
gtk_clipboard_set_with_data (clipboard,
targets, n_targets,
pixbuf_get_func, pixbuf_clear_func,
g_object_ref (pixbuf));
gtk_clipboard_set_can_store (clipboard, NULL, 0);
for (i = 0; i < n_targets; i++)
g_free (targets[i].target);
g_free (targets);
gtk_target_list_unref (list);
}
/**
* gtk_clipboard_request_contents:
* @clipboard: a #GtkClipboard
* @target: an atom representing the form into which the clipboard
* owner should convert the selection.
* @callback: A function to call when the results are received
* (or the retrieval fails). If the retrieval fails
* the length field of @selection_data will be
* negative.
* @user_data: user data to pass to @callback
*
* Requests the contents of clipboard as the given target.
* When the results of the result are later received the supplied callback
* will be called.
**/
void
gtk_clipboard_request_contents (GtkClipboard *clipboard,
GdkAtom target,
GtkClipboardReceivedFunc callback,
gpointer user_data)
{
GtkSelectionData *data;
data = gtk_clipboard_wait_for_contents (clipboard, target);
callback (clipboard, data, user_data);
gtk_selection_data_free (data);
}
/**
* gtk_clipboard_request_text:
* @clipboard: a #GtkClipboard
* @callback: a function to call when the text is received,
* or the retrieval fails. (It will always be called
* one way or the other.)
* @user_data: user data to pass to @callback.
*
* Requests the contents of the clipboard as text. When the text is
* later received, it will be converted to UTF-8 if necessary, and
* @callback will be called.
*
* The @text parameter to @callback will contain the resulting text if
* the request succeeded, or %NULL if it failed. This could happen for
* various reasons, in particular if the clipboard was empty or if the
* contents of the clipboard could not be converted into text form.
**/
void
gtk_clipboard_request_text (GtkClipboard *clipboard,
GtkClipboardTextReceivedFunc callback,
gpointer user_data)
{
gchar *data = gtk_clipboard_wait_for_text (clipboard);
callback (clipboard, data, user_data);
g_free (data);
}
void
gtk_clipboard_request_rich_text (GtkClipboard *clipboard,
GtkTextBuffer *buffer,
GtkClipboardRichTextReceivedFunc callback,
gpointer user_data)
{
/* FIXME: Implement */
}
guint8 *
gtk_clipboard_wait_for_rich_text (GtkClipboard *clipboard,
GtkTextBuffer *buffer,
GdkAtom *format,
gsize *length)
{
/* FIXME: Implement */
return NULL;
}
/**
* gtk_clipboard_request_image:
* @clipboard: a #GtkClipboard
* @callback: a function to call when the image is received,
* or the retrieval fails. (It will always be called
* one way or the other.)
* @user_data: user data to pass to @callback.
*
* Requests the contents of the clipboard as image. When the image is
* later received, it will be converted to a #GdkPixbuf, and
* @callback will be called.
*
* The @pixbuf parameter to @callback will contain the resulting
* #GdkPixbuf if the request succeeded, or %NULL if it failed. This
* could happen for various reasons, in particular if the clipboard
* was empty or if the contents of the clipboard could not be
* converted into an image.
*
* Since: 2.6
**/
void
gtk_clipboard_request_image (GtkClipboard *clipboard,
GtkClipboardImageReceivedFunc callback,
gpointer user_data)
{
GdkPixbuf *pixbuf = gtk_clipboard_wait_for_image (clipboard);
callback (clipboard, pixbuf, user_data);
if (pixbuf)
g_object_unref (pixbuf);
}
/**
* gtk_clipboard_request_targets:
* @clipboard: a #GtkClipboard
* @callback: a function to call when the targets are received,
* or the retrieval fails. (It will always be called
* one way or the other.)
* @user_data: user data to pass to @callback.
*
* Requests the contents of the clipboard as list of supported targets.
* When the list is later received, @callback will be called.
*
* The @targets parameter to @callback will contain the resulting targets if
* the request succeeded, or %NULL if it failed.
*
* Since: 2.4
**/
void
gtk_clipboard_request_targets (GtkClipboard *clipboard,
GtkClipboardTargetsReceivedFunc callback,
gpointer user_data)
{
GdkAtom *targets;
gint n_targets;
gtk_clipboard_wait_for_targets (clipboard, &targets, &n_targets);
callback (clipboard, targets, n_targets, user_data);
}
/**
* gtk_clipboard_wait_for_contents:
* @clipboard: a #GtkClipboard
* @target: an atom representing the form into which the clipboard
* owner should convert the selection.
*
* Requests the contents of the clipboard using the given target.
* This function waits for the data to be received using the main
* loop, so events, timeouts, etc, may be dispatched during the wait.
*
* Return value: a newly-allocated #GtkSelectionData object or %NULL
* if retrieving the given target failed. If non-%NULL,
* this value must be freed with gtk_selection_data_free()
* when you are finished with it.
**/
GtkSelectionData *
gtk_clipboard_wait_for_contents (GtkClipboard *clipboard,
GdkAtom target)
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
gchar *name;
NSData *data;
GtkSelectionData *selection_data = NULL;
if (target == gdk_atom_intern_static_string ("TARGETS"))
{
NSArray *types = [clipboard->pasteboard types];
int i, count;
GList *atom_list, *l;
GdkAtom *atoms;
count = [types count];
atom_list = _gtk_quartz_pasteboard_types_to_atom_list (types);
selection_data = g_slice_new (GtkSelectionData);
selection_data->selection = clipboard->selection;
selection_data->target = target;
selection_data->type = GDK_SELECTION_TYPE_ATOM;
selection_data->format = 32;
selection_data->length = count * sizeof (GdkAtom);
atoms = g_malloc (selection_data->length + 1);
for (l = atom_list, i = 0; l ; l = l->next, i++)
atoms[i] = GDK_POINTER_TO_ATOM (l->data);
selection_data->data = (guchar *)atoms;
selection_data->data[selection_data->length] = '\0';
[pool release];
g_list_free (atom_list);
return selection_data;
}
selection_data = _gtk_quartz_get_selection_data_from_pasteboard (clipboard->pasteboard,
target,
clipboard->selection);
[pool release];
return selection_data;
}
/**
* gtk_clipboard_wait_for_text:
* @clipboard: a #GtkClipboard
*
* Requests the contents of the clipboard as text and converts
* the result to UTF-8 if necessary. This function waits for
* the data to be received using the main loop, so events,
* timeouts, etc, may be dispatched during the wait.
*
* Return value: a newly-allocated UTF-8 string which must
* be freed with g_free(), or %NULL if retrieving
* the selection data failed. (This could happen
* for various reasons, in particular if the
* clipboard was empty or if the contents of the
* clipboard could not be converted into text form.)
**/
gchar *
gtk_clipboard_wait_for_text (GtkClipboard *clipboard)
{
GtkSelectionData *data;
gchar *result;
data = gtk_clipboard_wait_for_contents (clipboard,
gdk_atom_intern_static_string ("UTF8_STRING"));
result = (gchar *)gtk_selection_data_get_text (data);
gtk_selection_data_free (data);
return result;
}
/**
* gtk_clipboard_wait_for_image:
* @clipboard: a #GtkClipboard
*
* Requests the contents of the clipboard as image and converts
* the result to a #GdkPixbuf. This function waits for
* the data to be received using the main loop, so events,
* timeouts, etc, may be dispatched during the wait.
*
* Return value: a newly-allocated #GdkPixbuf object which must
* be disposed with g_object_unref(), or %NULL if
* retrieving the selection data failed. (This
* could happen for various reasons, in particular
* if the clipboard was empty or if the contents of
* the clipboard could not be converted into an image.)
*
* Since: 2.6
**/
GdkPixbuf *
gtk_clipboard_wait_for_image (GtkClipboard *clipboard)
{
const gchar *priority[] = { "image/png", "image/tiff", "image/jpeg", "image/gif", "image/bmp" };
int i;
GtkSelectionData *data;
for (i = 0; i < G_N_ELEMENTS (priority); i++)
{
data = gtk_clipboard_wait_for_contents (clipboard, gdk_atom_intern_static_string (priority[i]));
if (data)
{
GdkPixbuf *pixbuf = gtk_selection_data_get_pixbuf (data);
gtk_selection_data_free (data);
return pixbuf;
}
}
return NULL;
}
/**
* gtk_clipboard_get_display:
* @clipboard: a #GtkClipboard
*
* Gets the #GdkDisplay associated with @clipboard
*
* Return value: the #GdkDisplay associated with @clipboard
*
* Since: 2.2
**/
GdkDisplay *
gtk_clipboard_get_display (GtkClipboard *clipboard)
{
g_return_val_if_fail (clipboard != NULL, NULL);
return clipboard->display;
}
/**
* gtk_clipboard_wait_is_text_available:
* @clipboard: a #GtkClipboard
*
* Test to see if there is text available to be pasted
* This is done by requesting the TARGETS atom and checking
* if it contains any of the supported text targets. This function
* waits for the data to be received using the main loop, so events,
* timeouts, etc, may be dispatched during the wait.
*
* This function is a little faster than calling
* gtk_clipboard_wait_for_text() since it doesn't need to retrieve
* the actual text.
*
* Return value: %TRUE is there is text available, %FALSE otherwise.
**/
gboolean
gtk_clipboard_wait_is_text_available (GtkClipboard *clipboard)
{
GtkSelectionData *data;
gboolean result = FALSE;
data = gtk_clipboard_wait_for_contents (clipboard, gdk_atom_intern_static_string ("TARGETS"));
if (data)
{
result = gtk_selection_data_targets_include_text (data);
gtk_selection_data_free (data);
}
return result;
}
gboolean
gtk_clipboard_wait_is_rich_text_available (GtkClipboard *clipboard,
GtkTextBuffer *buffer)
{
GtkSelectionData *data;
gboolean result = FALSE;
g_return_val_if_fail (GTK_IS_CLIPBOARD (clipboard), FALSE);
g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE);
data = gtk_clipboard_wait_for_contents (clipboard, gdk_atom_intern_static_string ("TARGETS"));
if (data)
{
result = gtk_selection_data_targets_include_rich_text (data, buffer);
gtk_selection_data_free (data);
}
return result;
}
gboolean
gtk_clipboard_wait_is_image_available (GtkClipboard *clipboard)
{
GtkSelectionData *data;
gboolean result = FALSE;
data = gtk_clipboard_wait_for_contents (clipboard,
gdk_atom_intern_static_string ("TARGETS"));
if (data)
{
result = gtk_selection_data_targets_include_image (data, FALSE);
gtk_selection_data_free (data);
}
return result;
}
/**
* gtk_clipboard_wait_for_targets
* @clipboard: a #GtkClipboard
* @targets: location to store an array of targets. The result
* stored here must be freed with g_free().
* @n_targets: location to store number of items in @targets.
*
* Returns a list of targets that are present on the clipboard, or %NULL
* if there aren't any targets available. The returned list must be
* freed with g_free().
* This function waits for the data to be received using the main
* loop, so events, timeouts, etc, may be dispatched during the wait.
*
* Return value: %TRUE if any targets are present on the clipboard,
* otherwise %FALSE.
*
* Since: 2.4
*/
gboolean
gtk_clipboard_wait_for_targets (GtkClipboard *clipboard,
GdkAtom **targets,
gint *n_targets)
{
GtkSelectionData *data;
gboolean result = FALSE;
g_return_val_if_fail (clipboard != NULL, FALSE);
/* If the display supports change notification we cache targets */
if (gdk_display_supports_selection_notification (gtk_clipboard_get_display (clipboard)) &&
clipboard->n_cached_targets != -1)
{
if (n_targets)
*n_targets = clipboard->n_cached_targets;
if (targets)
*targets = g_memdup (clipboard->cached_targets,
clipboard->n_cached_targets * sizeof (GdkAtom));
return TRUE;
}
if (n_targets)
*n_targets = 0;
if (targets)
*targets = NULL;
data = gtk_clipboard_wait_for_contents (clipboard, gdk_atom_intern_static_string ("TARGETS"));
if (data)
{
GdkAtom *tmp_targets;
gint tmp_n_targets;
result = gtk_selection_data_get_targets (data, &tmp_targets, &tmp_n_targets);
if (gdk_display_supports_selection_notification (gtk_clipboard_get_display (clipboard)))
{
clipboard->n_cached_targets = tmp_n_targets;
clipboard->cached_targets = g_memdup (tmp_targets,
tmp_n_targets * sizeof (GdkAtom));
}
if (n_targets)
*n_targets = tmp_n_targets;
if (targets)
*targets = tmp_targets;
else
g_free (tmp_targets);
gtk_selection_data_free (data);
}
return result;
}
static GtkClipboard *
clipboard_peek (GdkDisplay *display,
GdkAtom selection,
gboolean only_if_exists)
{
GtkClipboard *clipboard = NULL;
GSList *clipboards;
GSList *tmp_list;
if (selection == GDK_NONE)
selection = GDK_SELECTION_CLIPBOARD;
clipboards = g_object_get_data (G_OBJECT (display), "gtk-clipboard-list");
tmp_list = clipboards;
while (tmp_list)
{
clipboard = tmp_list->data;
if (clipboard->selection == selection)
break;
tmp_list = tmp_list->next;
}
if (!tmp_list && !only_if_exists)
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
NSString *pasteboard_name;
clipboard = g_object_new (GTK_TYPE_CLIPBOARD, NULL);
if (selection == GDK_SELECTION_CLIPBOARD)
pasteboard_name = NSGeneralPboard;
else
{
char *atom_string = gdk_atom_name (selection);
pasteboard_name = [NSString stringWithFormat:@"_GTK_%@",
[NSString stringWithUTF8String:atom_string]];
g_free (atom_string);
}
clipboard->pasteboard = [NSPasteboard pasteboardWithName:pasteboard_name];
[pool release];
clipboard->selection = selection;
clipboard->display = display;
clipboard->n_cached_targets = -1;
clipboard->n_storable_targets = -1;
clipboards = g_slist_prepend (clipboards, clipboard);
g_object_set_data (G_OBJECT (display), I_("gtk-clipboard-list"), clipboards);
g_signal_connect (display, "closed",
G_CALLBACK (clipboard_display_closed), clipboard);
gdk_display_request_selection_notification (display, selection);
}
return clipboard;
}
static void
gtk_clipboard_owner_change (GtkClipboard *clipboard,
GdkEventOwnerChange *event)
{
if (clipboard->n_cached_targets != -1)
{
clipboard->n_cached_targets = -1;
g_free (clipboard->cached_targets);
}
}
/**
* gtk_clipboard_wait_is_target_available:
* @clipboard: a #GtkClipboard
* @target: A #GdkAtom indicating which target to look for.
*
* Checks if a clipboard supports pasting data of a given type. This
* function can be used to determine if a "Paste" menu item should be
* insensitive or not.
*
* If you want to see if there's text available on the clipboard, use
* gtk_clipboard_wait_is_text_available () instead.
*
* Return value: %TRUE if the target is available, %FALSE otherwise.
*
* Since: 2.6
*/
gboolean
gtk_clipboard_wait_is_target_available (GtkClipboard *clipboard,
GdkAtom target)
{
GdkAtom *targets;
gint i, n_targets;
gboolean retval = FALSE;
if (!gtk_clipboard_wait_for_targets (clipboard, &targets, &n_targets))
return FALSE;
for (i = 0; i < n_targets; i++)
{
if (targets[i] == target)
{
retval = TRUE;
break;
}
}
g_free (targets);
return retval;
}
/**
* _gtk_clipboard_handle_event:
* @event: a owner change event
*
* Emits the ::owner_change signal on the appropriate @clipboard.
*
* Since: 2.6
**/
void
_gtk_clipboard_handle_event (GdkEventOwnerChange *event)
{
}
/**
* gtk_clipboard_set_can_store:
* @clipboard: a #GtkClipboard
* @targets: array containing information about which forms should be stored
* or %NULL to indicate that all forms should be stored.
* @n_targets: number of elements in @targets
*
* Hints that the clipboard data should be stored somewhere when the
* application exits or when gtk_clipboard_store () is called.
*
* This value is reset when the clipboard owner changes.
* Where the clipboard data is stored is platform dependent,
* see gdk_display_store_clipboard () for more information.
*
* Since: 2.6
*/
void
gtk_clipboard_set_can_store (GtkClipboard *clipboard,
const GtkTargetEntry *targets,
gint n_targets)
{
/* FIXME: Implement */
}
/**
* gtk_clipboard_store:
* @clipboard: a #GtkClipboard
*
* Stores the current clipboard data somewhere so that it will stay
* around after the application has quit.
*
* Since: 2.6
*/
void
gtk_clipboard_store (GtkClipboard *clipboard)
{
/* FIXME: Implement */
}
/* Stores all clipboard selections on all displays, called from
* gtk_main_quit ().
*/
void
_gtk_clipboard_store_all (void)
{
/* FIXME: Implement */
}
#define __GTK_CLIPBOARD_C__
#include "gtkaliasdef.c"
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