/* 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 #include #import #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 gdk_atom_intern * ("CLIPBOARD", FALSE). See * http://www.freedesktop.org/Standards/clipboards-spec * 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 strlen(). * * 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"