forked from AuroraMiddleware/gtk
92d2dc0ba6
Mon Oct 22 16:25:12 2001 Owen Taylor <otaylor@redhat.com> Fixing popup menus to have "Paste" sensitized correctly. Original patches from Damian Ivereigh, much mangled. * gtk/gtkselection.c: Add functions gtk_selection_data_get_targets(), gtk_selection_data_targets_include_text(). (#60854) * gtk/gtkclipboard.c: Add a simple do-it-all non-async "check if the clipboard has text" function gtk_clipboard_wait_is_text_available. (#60854) * gtk/gtkentry.c: Only enable the paste item if the clipboard contains text. (#60973) * gtk/gtktextview.c: Only enable the paste item if the clipboard contains text. (#60975)
855 lines
24 KiB
C
855 lines
24 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 2000 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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* Global clipboard abstraction.
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*/
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#include <string.h>
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#include "gtkclipboard.h"
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#include "gtkinvisible.h"
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#include "gtkmain.h"
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#include "gtksignal.h"
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#ifdef GDK_WINDOWING_X11
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#include "x11/gdkx.h"
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#endif
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#ifdef GDK_WINDOWING_WIN32
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#include "win32/gdkwin32.h"
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#endif
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typedef struct _RequestContentsInfo RequestContentsInfo;
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typedef struct _RequestTextInfo RequestTextInfo;
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struct _GtkClipboard
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{
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GdkAtom selection;
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GtkClipboardGetFunc get_func;
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GtkClipboardClearFunc clear_func;
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gpointer user_data;
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gboolean have_owner;
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guint32 timestamp;
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gboolean have_selection;
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};
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struct _RequestContentsInfo
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{
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GtkClipboardReceivedFunc callback;
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gpointer user_data;
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};
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struct _RequestTextInfo
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{
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GtkClipboardTextReceivedFunc callback;
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gpointer user_data;
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};
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static void clipboard_unset (GtkClipboard *clipboard);
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static void selection_received (GtkWidget *widget,
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GtkSelectionData *selection_data,
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guint time);
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static GSList *clipboards;
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static GtkWidget *clipboard_widget;
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enum {
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TARGET_STRING,
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TARGET_TEXT,
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TARGET_COMPOUND_TEXT,
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TARGET_UTF8_STRING
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};
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static const gchar *request_contents_key = "gtk-request-contents";
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static GQuark request_contents_key_id = 0;
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static const gchar *clipboards_owned_key = "gtk-clipboards-owned";
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static GQuark clipboards_owned_key_id = 0;
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/**
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* gtk_clipboard_get:
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* @selection: a #GdkAtom which identifies the clipboard
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* to use. A value of %GDK_NONE here is the
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* same as gdk_atom_intern ("CLIPBOARD", FALSE),
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* and provides the default clipboard. Another
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* common value is %GDK_SELECTION_PRIMARY, which
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* identifies the primary X selection.
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*
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* Returns the clipboard object for the given selection.
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*
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* Return value: the appropriate clipboard object. If no
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* clipboard already exists, a new one will
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* be created. Once a clipboard object has
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* been created, it is persistent for all time.
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**/
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GtkClipboard *
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gtk_clipboard_get (GdkAtom selection)
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{
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GtkClipboard *clipboard = NULL;
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GSList *tmp_list;
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if (selection == GDK_NONE)
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selection = gdk_atom_intern ("CLIPBOARD", FALSE);
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tmp_list = clipboards;
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while (tmp_list)
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{
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clipboard = tmp_list->data;
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if (clipboard->selection == selection)
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break;
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tmp_list = tmp_list->next;
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}
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if (!tmp_list)
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{
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clipboard = g_new0 (GtkClipboard, 1);
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clipboard->selection = selection;
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clipboards = g_slist_prepend (clipboards, clipboard);
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}
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return clipboard;
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}
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static void
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selection_get_cb (GtkWidget *widget,
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GtkSelectionData *selection_data,
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guint time,
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guint info)
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{
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GtkClipboard *clipboard = gtk_clipboard_get (selection_data->selection);
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if (clipboard && clipboard->get_func)
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clipboard->get_func (clipboard, selection_data, info, clipboard->user_data);
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}
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static gboolean
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selection_clear_event_cb (GtkWidget *widget,
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GdkEventSelection *event)
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{
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GtkClipboard *clipboard = gtk_clipboard_get (event->selection);
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if (clipboard)
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{
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clipboard_unset (clipboard);
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return TRUE;
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}
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return FALSE;
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}
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static GtkWidget *
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make_clipboard_widget (gboolean provider)
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{
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GtkWidget *widget = gtk_invisible_new ();
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gtk_signal_connect (GTK_OBJECT (widget), "selection_received",
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GTK_SIGNAL_FUNC (selection_received), NULL);
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if (provider)
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{
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/* We need this for gdk_x11_get_server_time() */
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gtk_widget_add_events (widget, GDK_PROPERTY_CHANGE_MASK);
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gtk_signal_connect (GTK_OBJECT (widget), "selection_get",
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GTK_SIGNAL_FUNC (selection_get_cb), NULL);
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gtk_signal_connect (GTK_OBJECT (widget), "selection_clear_event",
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GTK_SIGNAL_FUNC (selection_clear_event_cb), NULL);
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}
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return widget;
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}
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static void
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ensure_clipboard_widget ()
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{
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if (!clipboard_widget)
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clipboard_widget = make_clipboard_widget (TRUE);
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}
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/* This function makes a very good guess at what the correct
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* timestamp for a selection request should be. If there is
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* a currently processed event, it uses the timestamp for that
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* event, otherwise it uses the current server time. However,
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* if the time resulting from that is older than the time used
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* last time, it uses the time used last time instead.
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*
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* In order implement this correctly, we never use CurrentTime,
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* but actually retrieve the actual timestamp from the server.
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* This is a little slower but allows us to make the guarantee
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* that the times used by this application will always ascend
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* and we won't get selections being rejected just because
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* we are using a correct timestamp from an event, but used
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* CurrentTime previously.
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*/
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static guint32
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clipboard_get_timestamp (GtkClipboard *clipboard)
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{
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guint32 timestamp = gtk_get_current_event_time ();
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ensure_clipboard_widget ();
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if (timestamp == GDK_CURRENT_TIME)
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{
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#ifdef GDK_WINDOWING_X11
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timestamp = gdk_x11_get_server_time (clipboard_widget->window);
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#elif defined GDK_WINDOWING_WIN32
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timestamp = GetMessageTime ();
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#endif
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}
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else
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{
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if (clipboard->timestamp != GDK_CURRENT_TIME)
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{
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/* Check to see if clipboard->timestamp is newer than
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* timestamp, accounting for wraparound.
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*/
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guint32 max = timestamp + 0x80000000;
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if ((max > timestamp &&
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(clipboard->timestamp > timestamp &&
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clipboard->timestamp <= max)) ||
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(max <= timestamp &&
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(clipboard->timestamp > timestamp ||
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clipboard->timestamp <= max)))
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{
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timestamp = clipboard->timestamp;
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}
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}
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}
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clipboard->timestamp = timestamp;
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return timestamp;
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}
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static void
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clipboard_owner_destroyed (gpointer data)
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{
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GSList *clipboards = data;
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GSList *tmp_list;
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tmp_list = clipboards;
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while (tmp_list)
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{
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GtkClipboard *clipboard = tmp_list->data;
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clipboard->get_func = NULL;
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clipboard->clear_func = NULL;
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clipboard->user_data = NULL;
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clipboard->have_owner = FALSE;
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gtk_clipboard_clear (clipboard);
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tmp_list = tmp_list->next;
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}
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g_slist_free (clipboards);
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}
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static void
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clipboard_add_owner_notify (GtkClipboard *clipboard)
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{
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if (!clipboards_owned_key_id)
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clipboards_owned_key_id = g_quark_from_static_string (clipboards_owned_key);
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if (clipboard->have_owner)
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g_object_set_qdata_full (clipboard->user_data, clipboards_owned_key_id,
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g_slist_prepend (g_object_steal_qdata (clipboard->user_data,
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clipboards_owned_key_id),
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clipboard),
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clipboard_owner_destroyed);
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}
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static void
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clipboard_remove_owner_notify (GtkClipboard *clipboard)
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{
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if (clipboard->have_owner)
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g_object_set_qdata_full (clipboard->user_data, clipboards_owned_key_id,
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g_slist_remove (g_object_steal_qdata (clipboard->user_data,
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clipboards_owned_key_id),
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clipboard),
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clipboard_owner_destroyed);
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}
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static gboolean
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gtk_clipboard_set_contents (GtkClipboard *clipboard,
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const GtkTargetEntry *targets,
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guint n_targets,
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GtkClipboardGetFunc get_func,
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GtkClipboardClearFunc clear_func,
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gpointer user_data,
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gboolean have_owner)
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{
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ensure_clipboard_widget ();
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if (gtk_selection_owner_set (clipboard_widget, clipboard->selection,
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clipboard_get_timestamp (clipboard)))
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{
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clipboard->have_selection = TRUE;
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if (!(clipboard->have_owner && have_owner) ||
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clipboard->user_data != user_data)
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{
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clipboard_unset (clipboard);
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if (clipboard->get_func)
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{
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/* Calling unset() caused the clipboard contents to be reset!
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* Avoid leaking and return
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*/
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if (!(clipboard->have_owner && have_owner) ||
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clipboard->user_data != user_data)
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{
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(*clear_func) (clipboard, user_data);
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return FALSE;
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}
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else
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return TRUE;
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}
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else
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{
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clipboard->user_data = user_data;
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clipboard->have_owner = have_owner;
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if (have_owner)
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clipboard_add_owner_notify (clipboard);
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}
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}
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clipboard->get_func = get_func;
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clipboard->clear_func = clear_func;
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gtk_selection_clear_targets (clipboard_widget, clipboard->selection);
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gtk_selection_add_targets (clipboard_widget, clipboard->selection,
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targets, n_targets);
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return TRUE;
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}
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else
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return FALSE;
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}
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/**
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* gtk_clipboard_set_with_data:
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* @clipboard: a #GtkClipboard
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* @targets: array containing information about the available forms for the
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* clipboard data
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* @n_targets: number of elements in @targets
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* @get_func: function to call to get the actual clipboard data
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* @clear_func: when the clipboard contents are set again, this function will
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* be called, and @get_func will not be subsequently called.
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* @user_data: user data to pass to @get_func and @clear_func.
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*
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* Virtually sets the contents of the specified clipboard by providing
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* a list of supported formats for the clipboard data and a function
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* to call to get the actual data when it is requested.
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*
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* Return value: %TRUE if setting the clipboard data succeeded. If setting
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* the clipboard data failed the provided callback functions
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* will be ignored.
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**/
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gboolean
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gtk_clipboard_set_with_data (GtkClipboard *clipboard,
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const GtkTargetEntry *targets,
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guint n_targets,
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GtkClipboardGetFunc get_func,
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GtkClipboardClearFunc clear_func,
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gpointer user_data)
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{
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g_return_val_if_fail (clipboard != NULL, FALSE);
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g_return_val_if_fail (targets != NULL, FALSE);
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g_return_val_if_fail (get_func != NULL, FALSE);
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return gtk_clipboard_set_contents (clipboard, targets, n_targets,
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get_func, clear_func, user_data,
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FALSE);
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}
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/**
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* gtk_clipboard_set_with_owner:
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* @clipboard: a #GtkClipboard
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* @targets: array containing information about the available forms for the
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* clipboard data
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* @n_targets: number of elements in @targets
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* @get_func: function to call to get the actual clipboard data
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* @clear_func: when the clipboard contents are set again, this function will
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* be called, and @get_func will not be subsequently called.
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* @owner: an object that "owns" the data. This object will be passed
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* to the callbacks when called.
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*
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* Virtually sets the contents of the specified clipboard by providing
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* a list of supported formats for the clipboard data and a function
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* to call to get the actual data when it is requested.
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*
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* The difference between this function and gtk_clipboard_set_with_data
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* is that instead of an generic @user_data pointer, a #GObject is passed
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* in.
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*
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* Return value: %TRUE if setting the clipboard data succeeded. If setting
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* the clipboard data failed the provided callback functions
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* will be ignored.
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**/
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gboolean
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gtk_clipboard_set_with_owner (GtkClipboard *clipboard,
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const GtkTargetEntry *targets,
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guint n_targets,
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GtkClipboardGetFunc get_func,
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GtkClipboardClearFunc clear_func,
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GObject *owner)
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{
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g_return_val_if_fail (clipboard != NULL, FALSE);
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g_return_val_if_fail (targets != NULL, FALSE);
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g_return_val_if_fail (get_func != NULL, FALSE);
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g_return_val_if_fail (G_IS_OBJECT (owner), FALSE);
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return gtk_clipboard_set_contents (clipboard, targets, n_targets,
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get_func, clear_func, owner,
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TRUE);
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}
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/**
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* gtk_clipboard_get_owner:
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* @clipboard: a #GtkClipboard
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*
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* If the clipboard contents callbacks were set with gtk_clipboard_set_owner(),
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* and the gtk_clipboard_set_with_data() or gtk_clipboard_clear() has not
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* subsequently called, returns the @owner set by gtk_clipboard_set_owner().
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*
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* Return value: the owner of the clipboard, if any; otherwise %NULL.
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**/
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GObject *
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gtk_clipboard_get_owner (GtkClipboard *clipboard)
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{
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g_return_val_if_fail (clipboard != NULL, NULL);
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if (clipboard->have_owner)
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return clipboard->user_data;
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else
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return NULL;
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}
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static void
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clipboard_unset (GtkClipboard *clipboard)
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{
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GtkClipboardClearFunc old_clear_func;
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gpointer old_data;
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old_clear_func = clipboard->clear_func;
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old_data = clipboard->user_data;
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if (clipboard->have_owner)
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{
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clipboard_remove_owner_notify (clipboard);
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clipboard->have_owner = FALSE;
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}
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clipboard->get_func = NULL;
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clipboard->clear_func = NULL;
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clipboard->user_data = NULL;
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if (old_clear_func)
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old_clear_func (clipboard, old_data);
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}
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/**
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* gtk_clipboard_clear:
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* @clipboard: a #GtkClipboard
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*
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* Clears the contents of the clipboard. Generally this should only
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* be called between the time you call gtk_clipboard_set_contents(),
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* and when the @clear_func you supplied is called. Otherwise, the
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* clipboard may be owned by someone else.
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**/
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void
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gtk_clipboard_clear (GtkClipboard *clipboard)
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{
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g_return_if_fail (clipboard != NULL);
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if (clipboard->have_selection)
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gtk_selection_owner_set (NULL, clipboard->selection,
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clipboard_get_timestamp (clipboard));
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}
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static void
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text_get_func (GtkClipboard *clipboard,
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GtkSelectionData *selection_data,
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guint info,
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gpointer data)
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{
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gtk_selection_data_set_text (selection_data, data);
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}
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static void
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text_clear_func (GtkClipboard *clipboard,
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gpointer data)
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{
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g_free (data);
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}
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/**
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* gtk_clipboard_set_text:
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* @clipboard: a #GtkClipboard object
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* @text: a UTF-8 string.
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* @len: length of @text, in bytes, or -1, in which case
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* the length will be determined with strlen().
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*
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* Sets the contents of the clipboard to the given UTF-8 string. GTK+ will
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* make a copy of the text and take responsibility for responding
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* for requests for the text, and for converting the text into
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* the requested format.
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**/
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void
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gtk_clipboard_set_text (GtkClipboard *clipboard,
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const gchar *text,
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gint len)
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{
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static const GtkTargetEntry targets[] = {
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{ "STRING", 0, TARGET_STRING },
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{ "TEXT", 0, TARGET_TEXT },
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{ "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
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{ "UTF8_STRING", 0, TARGET_UTF8_STRING }
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};
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g_return_if_fail (clipboard != NULL);
|
|
g_return_if_fail (text != NULL);
|
|
|
|
if (len < 0)
|
|
len = strlen (text);
|
|
|
|
gtk_clipboard_set_with_data (clipboard,
|
|
targets, G_N_ELEMENTS (targets),
|
|
text_get_func, text_clear_func,
|
|
g_strndup (text, len));
|
|
}
|
|
|
|
static void
|
|
set_request_contents_info (GtkWidget *widget,
|
|
RequestContentsInfo *info)
|
|
{
|
|
if (!request_contents_key_id)
|
|
request_contents_key_id = g_quark_from_static_string (request_contents_key);
|
|
|
|
gtk_object_set_data_by_id (GTK_OBJECT (widget),
|
|
request_contents_key_id,
|
|
info);
|
|
}
|
|
|
|
static RequestContentsInfo *
|
|
get_request_contents_info (GtkWidget *widget)
|
|
{
|
|
if (!request_contents_key_id)
|
|
return NULL;
|
|
else
|
|
return gtk_object_get_data_by_id (GTK_OBJECT (widget),
|
|
request_contents_key_id);
|
|
}
|
|
|
|
static void
|
|
selection_received (GtkWidget *widget,
|
|
GtkSelectionData *selection_data,
|
|
guint time)
|
|
{
|
|
RequestContentsInfo *request_info = get_request_contents_info (widget);
|
|
set_request_contents_info (widget, NULL);
|
|
|
|
request_info->callback (gtk_clipboard_get (selection_data->selection),
|
|
selection_data,
|
|
request_info->user_data);
|
|
|
|
g_free (request_info);
|
|
|
|
if (widget != clipboard_widget)
|
|
gtk_widget_destroy (widget);
|
|
}
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
RequestContentsInfo *info;
|
|
GtkWidget *widget;
|
|
|
|
g_return_if_fail (clipboard != NULL);
|
|
g_return_if_fail (target != GDK_NONE);
|
|
g_return_if_fail (callback != NULL);
|
|
|
|
ensure_clipboard_widget ();
|
|
|
|
if (get_request_contents_info (clipboard_widget))
|
|
widget = make_clipboard_widget (FALSE);
|
|
else
|
|
widget = clipboard_widget;
|
|
|
|
info = g_new (RequestContentsInfo, 1);
|
|
info->callback = callback;
|
|
info->user_data = user_data;
|
|
|
|
set_request_contents_info (widget, info);
|
|
|
|
gtk_selection_convert (widget, clipboard->selection, target,
|
|
clipboard_get_timestamp (clipboard));
|
|
}
|
|
|
|
static void
|
|
request_text_received_func (GtkClipboard *clipboard,
|
|
GtkSelectionData *selection_data,
|
|
gpointer data)
|
|
{
|
|
RequestTextInfo *info = data;
|
|
gchar *result = NULL;
|
|
|
|
result = gtk_selection_data_get_text (selection_data);
|
|
|
|
if (!result)
|
|
{
|
|
/* If we asked for UTF8 and didn't get it, try compound_text;
|
|
* if we asked for compound_text and didn't get it, try string;
|
|
* If we asked for anything else and didn't get it, give up.
|
|
*/
|
|
if (selection_data->target == gdk_atom_intern ("UTF8_STRING", FALSE))
|
|
{
|
|
gtk_clipboard_request_contents (clipboard,
|
|
gdk_atom_intern ("COMPOUND_TEXT", FALSE),
|
|
request_text_received_func, info);
|
|
return;
|
|
}
|
|
else if (selection_data->target == gdk_atom_intern ("COMPOUND_TEXT", FALSE))
|
|
{
|
|
gtk_clipboard_request_contents (clipboard,
|
|
GDK_TARGET_STRING,
|
|
request_text_received_func, info);
|
|
return;
|
|
}
|
|
}
|
|
|
|
info->callback (clipboard, result, info->user_data);
|
|
g_free (info);
|
|
g_free (result);
|
|
}
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
RequestTextInfo *info;
|
|
|
|
g_return_if_fail (clipboard != NULL);
|
|
g_return_if_fail (callback != NULL);
|
|
|
|
info = g_new (RequestTextInfo, 1);
|
|
info->callback = callback;
|
|
info->user_data = user_data;
|
|
|
|
gtk_clipboard_request_contents (clipboard, gdk_atom_intern ("UTF8_STRING", FALSE),
|
|
request_text_received_func,
|
|
info);
|
|
}
|
|
|
|
|
|
typedef struct
|
|
{
|
|
GMainLoop *loop;
|
|
gpointer data;
|
|
} WaitResults;
|
|
|
|
static void
|
|
clipboard_received_func (GtkClipboard *clipboard,
|
|
GtkSelectionData *selection_data,
|
|
gpointer data)
|
|
{
|
|
WaitResults *results = data;
|
|
|
|
if (selection_data->length >= 0)
|
|
results->data = gtk_selection_data_copy (selection_data);
|
|
|
|
g_main_quit (results->loop);
|
|
}
|
|
|
|
/**
|
|
* 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 freed with gtk_selection_data_free() when
|
|
* you are finished with it.
|
|
**/
|
|
GtkSelectionData *
|
|
gtk_clipboard_wait_for_contents (GtkClipboard *clipboard,
|
|
GdkAtom target)
|
|
{
|
|
WaitResults results;
|
|
|
|
g_return_val_if_fail (clipboard != NULL, NULL);
|
|
g_return_val_if_fail (target != GDK_NONE, NULL);
|
|
|
|
results.data = NULL;
|
|
results.loop = g_main_new (TRUE);
|
|
|
|
gtk_clipboard_request_contents (clipboard, target,
|
|
clipboard_received_func,
|
|
&results);
|
|
|
|
if (g_main_is_running (results.loop))
|
|
{
|
|
GDK_THREADS_LEAVE ();
|
|
g_main_run (results.loop);
|
|
GDK_THREADS_ENTER ();
|
|
}
|
|
|
|
g_main_destroy (results.loop);
|
|
|
|
return results.data;
|
|
}
|
|
|
|
static void
|
|
clipboard_text_received_func (GtkClipboard *clipboard,
|
|
const gchar *text,
|
|
gpointer data)
|
|
{
|
|
WaitResults *results = data;
|
|
|
|
results->data = g_strdup (text);
|
|
g_main_quit (results->loop);
|
|
}
|
|
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
WaitResults results;
|
|
|
|
g_return_val_if_fail (clipboard != NULL, NULL);
|
|
g_return_val_if_fail (clipboard != NULL, NULL);
|
|
|
|
results.data = NULL;
|
|
results.loop = g_main_new (TRUE);
|
|
|
|
gtk_clipboard_request_text (clipboard,
|
|
clipboard_text_received_func,
|
|
&results);
|
|
|
|
if (g_main_is_running (results.loop))
|
|
{
|
|
GDK_THREADS_LEAVE ();
|
|
g_main_run (results.loop);
|
|
GDK_THREADS_ENTER ();
|
|
}
|
|
|
|
g_main_destroy (results.loop);
|
|
|
|
return results.data;
|
|
}
|
|
|
|
/**
|
|
* 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 names: STRING, TEXT, COMPOUND_TEXT,
|
|
* UTF8_STRING. 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 ("TARGETS", FALSE));
|
|
if (data)
|
|
{
|
|
result = gtk_selection_data_targets_include_text (data);
|
|
gtk_selection_data_free (data);
|
|
}
|
|
|
|
return result;
|
|
}
|