forked from AuroraMiddleware/gtk
2256 lines
68 KiB
C
2256 lines
68 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 2000 Red Hat, Inc.
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* Copyright (C) 2004 Nokia Corporation
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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, see <http://www.gnu.org/licenses/>.
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*
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* Global clipboard abstraction.
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*/
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#include "config.h"
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#include <string.h>
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#include "gtkclipboard.h"
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#include "gtkclipboardprivate.h"
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#include "gtkinvisible.h"
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#include "gtkmain.h"
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#include "gtkmarshalers.h"
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#include "gtkselectionprivate.h"
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#include "gtktextbufferrichtext.h"
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#include "gtkintl.h"
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#include "gdk/gdk-private.h"
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/**
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* SECTION:gtkclipboard
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* @Short_description: Storing data on clipboards
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* @Title: Clipboards
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* @See_also: #GtkSelectionData
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*
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* The #GtkClipboard object represents a clipboard of data shared
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* between different processes or between different widgets in
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* the same process. Each clipboard is identified by a name encoded as a
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* #GdkAtom. (Conversion to and from strings can be done with
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* gdk_atom_intern() and gdk_atom_name().) The default clipboard
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* corresponds to the “CLIPBOARD” atom; another commonly used clipboard
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* is the “PRIMARY” clipboard, which, in X, traditionally contains
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* the currently selected text.
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*
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* To support having a number of different formats on the clipboard
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* at the same time, the clipboard mechanism allows providing
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* callbacks instead of the actual data. When you set the contents
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* of the clipboard, you can either supply the data directly (via
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* functions like gtk_clipboard_set_text()), or you can supply a
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* callback to be called at a later time when the data is needed (via
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* gtk_clipboard_set_with_data() or gtk_clipboard_set_with_owner().)
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* Providing a callback also avoids having to make copies of the data
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* when it is not needed.
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*
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* gtk_clipboard_set_with_data() and gtk_clipboard_set_with_owner()
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* are quite similar; the choice between the two depends mostly on
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* which is more convenient in a particular situation.
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* The former is most useful when you want to have a blob of data
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* with callbacks to convert it into the various data types that you
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* advertise. When the @clear_func you provided is called, you
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* simply free the data blob. The latter is more useful when the
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* contents of clipboard reflect the internal state of a #GObject
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* (As an example, for the PRIMARY clipboard, when an entry widget
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* provides the clipboard’s contents the contents are simply the
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* text within the selected region.) If the contents change, the
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* entry widget can call gtk_clipboard_set_with_owner() to update
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* the timestamp for clipboard ownership, without having to worry
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* about @clear_func being called.
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*
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* Requesting the data from the clipboard is essentially
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* asynchronous. If the contents of the clipboard are provided within
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* the same process, then a direct function call will be made to
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* retrieve the data, but if they are provided by another process,
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* then the data needs to be retrieved from the other process, which
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* may take some time. To avoid blocking the user interface, the call
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* to request the selection, gtk_clipboard_request_contents() takes a
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* callback that will be called when the contents are received (or
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* when the request fails.) If you don’t want to deal with providing
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* a separate callback, you can also use gtk_clipboard_wait_for_contents().
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* What this does is run the GLib main loop recursively waiting for
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* the contents. This can simplify the code flow, but you still have
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* to be aware that other callbacks in your program can be called
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* while this recursive mainloop is running.
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*
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* Along with the functions to get the clipboard contents as an
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* arbitrary data chunk, there are also functions to retrieve
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* it as text, gtk_clipboard_request_text() and
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* gtk_clipboard_wait_for_text(). These functions take care of
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* determining which formats are advertised by the clipboard
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* provider, asking for the clipboard in the best available format
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* and converting the results into the UTF-8 encoding. (The standard
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* form for representing strings in GTK+.)
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*/
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enum {
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OWNER_CHANGE,
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LAST_SIGNAL
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};
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typedef struct _RequestContentsInfo RequestContentsInfo;
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typedef struct _RequestTextInfo RequestTextInfo;
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typedef struct _RequestRichTextInfo RequestRichTextInfo;
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typedef struct _RequestImageInfo RequestImageInfo;
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typedef struct _RequestURIInfo RequestURIInfo;
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typedef struct _RequestTargetsInfo RequestTargetsInfo;
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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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struct _RequestRichTextInfo
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{
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GtkClipboardRichTextReceivedFunc callback;
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GdkAtom *atoms;
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gint n_atoms;
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gint current_atom;
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gpointer user_data;
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};
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struct _RequestImageInfo
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{
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GtkClipboardImageReceivedFunc callback;
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gpointer user_data;
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};
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struct _RequestURIInfo
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{
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GtkClipboardURIReceivedFunc callback;
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gpointer user_data;
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};
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struct _RequestTargetsInfo
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{
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GtkClipboardTargetsReceivedFunc callback;
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gpointer user_data;
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};
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static void gtk_clipboard_finalize (GObject *object);
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static void gtk_clipboard_owner_change (GtkClipboard *clipboard,
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GdkEventOwnerChange *event);
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static gboolean gtk_clipboard_set_contents (GtkClipboard *clipboard,
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GtkTargetList *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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static void gtk_clipboard_real_clear (GtkClipboard *clipboard);
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static void gtk_clipboard_real_request_contents (GtkClipboard *clipboard,
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GdkAtom target,
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GtkClipboardReceivedFunc callback,
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gpointer user_data);
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static void gtk_clipboard_real_set_can_store (GtkClipboard *clipboard,
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GtkTargetList *targets);
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static void gtk_clipboard_real_store (GtkClipboard *clipboard);
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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 GtkClipboard *clipboard_peek (GdkDisplay *display,
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GdkAtom selection,
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gboolean only_if_exists);
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static GtkWidget * get_clipboard_widget (GdkDisplay *display);
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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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static guint clipboard_signals[LAST_SIGNAL] = { 0 };
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G_DEFINE_TYPE (GtkClipboard, gtk_clipboard, G_TYPE_OBJECT)
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static void
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gtk_clipboard_init (GtkClipboard *object)
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{
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}
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static void
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gtk_clipboard_class_init (GtkClipboardClass *class)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (class);
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gobject_class->finalize = gtk_clipboard_finalize;
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class->set_contents = gtk_clipboard_set_contents;
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class->clear = gtk_clipboard_real_clear;
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class->request_contents = gtk_clipboard_real_request_contents;
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class->set_can_store = gtk_clipboard_real_set_can_store;
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class->store = gtk_clipboard_real_store;
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class->owner_change = gtk_clipboard_owner_change;
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/**
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* GtkClipboard::owner-change:
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* @clipboard: the #GtkClipboard on which the signal is emitted
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* @event: (type Gdk.EventOwnerChange): the @GdkEventOwnerChange event
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*
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* The ::owner-change signal is emitted when GTK+ receives an
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* event that indicates that the ownership of the selection
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* associated with @clipboard has changed.
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*
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* Since: 2.6
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*/
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clipboard_signals[OWNER_CHANGE] =
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g_signal_new (I_("owner-change"),
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G_TYPE_FROM_CLASS (gobject_class),
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G_SIGNAL_RUN_FIRST,
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G_STRUCT_OFFSET (GtkClipboardClass, owner_change),
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NULL, NULL,
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NULL,
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G_TYPE_NONE, 1,
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GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
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}
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static void
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gtk_clipboard_finalize (GObject *object)
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{
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GtkClipboard *clipboard;
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GtkWidget *clipboard_widget = NULL;
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GSList *clipboards = NULL;
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clipboard = GTK_CLIPBOARD (object);
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if (clipboard->display)
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{
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clipboards = g_object_get_data (G_OBJECT (clipboard->display), "gtk-clipboard-list");
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if (g_slist_index (clipboards, clipboard) >= 0)
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g_warning ("GtkClipboard prematurely finalized");
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clipboards = g_slist_remove (clipboards, clipboard);
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g_object_set_data (G_OBJECT (clipboard->display), "gtk-clipboard-list",
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clipboards);
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/* don't use get_clipboard_widget() here because it would create the
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* widget if it doesn't exist.
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*/
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clipboard_widget = g_object_get_data (G_OBJECT (clipboard->display),
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"gtk-clipboard-widget");
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}
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clipboard_unset (clipboard);
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if (clipboard->store_loop && g_main_loop_is_running (clipboard->store_loop))
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g_main_loop_quit (clipboard->store_loop);
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if (clipboard->store_timeout != 0)
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g_source_remove (clipboard->store_timeout);
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if (clipboard_widget != NULL && clipboard->notify_signal_id != 0)
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g_signal_handler_disconnect (clipboard_widget, clipboard->notify_signal_id);
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g_free (clipboard->storable_targets);
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g_free (clipboard->cached_targets);
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G_OBJECT_CLASS (gtk_clipboard_parent_class)->finalize (object);
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}
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static void
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clipboard_display_closed (GdkDisplay *display,
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gboolean is_error,
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GtkClipboard *clipboard)
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{
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GSList *clipboards;
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clipboards = g_object_get_data (G_OBJECT (display), "gtk-clipboard-list");
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g_object_run_dispose (G_OBJECT (clipboard));
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clipboards = g_slist_remove (clipboards, clipboard);
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g_object_set_data (G_OBJECT (display), I_("gtk-clipboard-list"), clipboards);
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g_object_unref (clipboard);
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}
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/**
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* gtk_clipboard_get_for_display:
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* @display: the #GdkDisplay for which the clipboard is to be retrieved or created.
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* @selection: a #GdkAtom which identifies the clipboard to use.
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*
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* Returns the clipboard object for the given selection.
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* Cut/copy/paste menu items and keyboard shortcuts should use
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* the default clipboard, returned by passing %GDK_SELECTION_CLIPBOARD for @selection.
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* (%NULL is supported as a synonym for GDK_SELECTION_CLIPBOARD
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* for backwards compatibility reasons.)
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* The currently-selected object or text should be provided on the clipboard
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* identified by #GDK_SELECTION_PRIMARY. Cut/copy/paste menu items
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* conceptually copy the contents of the #GDK_SELECTION_PRIMARY clipboard
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* to the default clipboard, i.e. they copy the selection to what the
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* user sees as the clipboard.
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*
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* (Passing #NULL is the same as using `gdk_atom_intern
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* ("CLIPBOARD", FALSE)`.
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*
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* See the
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* [FreeDesktop Clipboard Specification](http://www.freedesktop.org/Standards/clipboards-spec)
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* for a detailed discussion of the “CLIPBOARD” vs. “PRIMARY”
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* selections under the X window system. On Win32 the
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* #GDK_SELECTION_PRIMARY clipboard is essentially ignored.)
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*
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* It’s possible to have arbitrary named clipboards; if you do invent
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* new clipboards, you should prefix the selection name with an
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* underscore (because the ICCCM requires that nonstandard atoms are
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* underscore-prefixed), and namespace it as well. For example,
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* if your application called “Foo” has a special-purpose
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* clipboard, you might call it “_FOO_SPECIAL_CLIPBOARD”.
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*
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* Returns: (transfer none): the appropriate clipboard object. If no
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* clipboard already exists, a new one will be created. Once a clipboard
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* object has been created, it is persistent and, since it is owned by
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* GTK+, must not be freed or unrefd.
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*
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* Since: 2.2
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**/
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GtkClipboard *
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gtk_clipboard_get_for_display (GdkDisplay *display,
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GdkAtom selection)
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{
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g_return_val_if_fail (display != NULL, NULL); /* See bgo#463773; this is needed because Flash Player sucks */
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g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
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g_return_val_if_fail (!gdk_display_is_closed (display), NULL);
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return clipboard_peek (display, selection, FALSE);
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}
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/**
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* gtk_clipboard_get:
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* @selection: a #GdkAtom which identifies the clipboard to use
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*
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* Returns the clipboard object for the given selection.
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* See gtk_clipboard_get_for_display() for complete details.
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*
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* Returns: (transfer none): the appropriate clipboard object. If no clipboard
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* already exists, a new one will be created. Once a clipboard
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* object has been created, it is persistent and, since it is
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* owned by GTK+, must not be freed or unreffed.
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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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return gtk_clipboard_get_for_display (gdk_display_get_default (), selection);
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}
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/**
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* gtk_clipboard_get_default:
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* @display: the #GdkDisplay for which the clipboard is to be retrieved.
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*
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* Returns the default clipboard object for use with cut/copy/paste menu items
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* and keyboard shortcuts.
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*
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* Return value: (transfer none): the default clipboard object.
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*
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* Since: 3.16
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**/
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GtkClipboard *
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gtk_clipboard_get_default (GdkDisplay *display)
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{
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g_return_val_if_fail (display != NULL, NULL);
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g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
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return gtk_clipboard_get_for_display (display, GDK_SELECTION_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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{
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GtkClipboard *clipboard;
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clipboard = gtk_widget_get_clipboard (widget,
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gtk_selection_data_get_selection (selection_data));
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if (clipboard && clipboard->get_func)
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clipboard->get_func (clipboard, selection_data, 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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GdkAtom selection;
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GtkClipboard *clipboard;
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gdk_event_get_selection ((GdkEvent *)event, &selection);
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clipboard = gtk_widget_get_clipboard (widget, 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 (GdkDisplay *display,
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gboolean provider)
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{
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GtkWidget *widget = gtk_invisible_new_for_display (display);
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|
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g_signal_connect (widget, "selection-received",
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G_CALLBACK (selection_received), NULL);
|
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|
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if (provider)
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{
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g_signal_connect (widget, "selection-get",
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G_CALLBACK (selection_get_cb), NULL);
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g_signal_connect (widget, "selection-clear-event",
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G_CALLBACK (selection_clear_event_cb), NULL);
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}
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return widget;
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}
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||
|
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static GtkWidget *
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get_clipboard_widget (GdkDisplay *display)
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{
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GtkWidget *clip_widget = g_object_get_data (G_OBJECT (display), "gtk-clipboard-widget");
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if (!clip_widget)
|
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{
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clip_widget = make_clipboard_widget (display, TRUE);
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g_object_set_data (G_OBJECT (display), I_("gtk-clipboard-widget"), clip_widget);
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}
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return clip_widget;
|
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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,
|
||
* but actually retrieve the actual timestamp from the server.
|
||
* 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
|
||
* 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)
|
||
{
|
||
guint32 timestamp = gtk_get_current_event_time ();
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||
|
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if (timestamp == GDK_CURRENT_TIME)
|
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{
|
||
timestamp = gdk_display_get_last_seen_time (clipboard->display);
|
||
}
|
||
else
|
||
{
|
||
if (clipboard->timestamp != GDK_CURRENT_TIME)
|
||
{
|
||
/* Check to see if clipboard->timestamp is newer than
|
||
* timestamp, accounting for wraparound.
|
||
*/
|
||
|
||
guint32 max = timestamp + 0x80000000;
|
||
|
||
if ((max > timestamp &&
|
||
(clipboard->timestamp > timestamp &&
|
||
clipboard->timestamp <= max)) ||
|
||
(max <= timestamp &&
|
||
(clipboard->timestamp > timestamp ||
|
||
clipboard->timestamp <= max)))
|
||
{
|
||
timestamp = clipboard->timestamp;
|
||
}
|
||
}
|
||
}
|
||
|
||
clipboard->timestamp = timestamp;
|
||
|
||
return timestamp;
|
||
}
|
||
|
||
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;
|
||
|
||
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,
|
||
GtkTargetList *targets,
|
||
GtkClipboardGetFunc get_func,
|
||
GtkClipboardClearFunc clear_func,
|
||
gpointer user_data,
|
||
gboolean have_owner)
|
||
{
|
||
GtkWidget *clipboard_widget = get_clipboard_widget (clipboard->display);
|
||
|
||
if (gtk_selection_owner_set_for_display (clipboard->display,
|
||
clipboard_widget,
|
||
clipboard->selection,
|
||
clipboard_get_timestamp (clipboard)))
|
||
{
|
||
clipboard->have_selection = TRUE;
|
||
|
||
if (clipboard->n_cached_targets != -1)
|
||
{
|
||
g_free (clipboard->cached_targets);
|
||
clipboard->cached_targets = NULL;
|
||
clipboard->n_cached_targets = -1;
|
||
}
|
||
|
||
if (!(clipboard->have_owner && have_owner) ||
|
||
clipboard->user_data != user_data)
|
||
{
|
||
clipboard_unset (clipboard);
|
||
|
||
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;
|
||
|
||
gtk_selection_clear_targets (clipboard_widget, clipboard->selection);
|
||
gtk_selection_add_targets (clipboard_widget, clipboard->selection, targets);
|
||
|
||
return TRUE;
|
||
}
|
||
else
|
||
return FALSE;
|
||
}
|
||
|
||
/**
|
||
* gtk_clipboard_set_with_data: (skip)
|
||
* @clipboard: a #GtkClipboard
|
||
* @targets: The targets (data formats) in which the
|
||
* functions can provide the data
|
||
* @get_func: (scope async): function to call to get the actual clipboard data
|
||
* @clear_func: (scope async): 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.
|
||
*
|
||
* Returns: %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,
|
||
GtkTargetList *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_GET_CLASS (clipboard)->set_contents (clipboard,
|
||
targets,
|
||
get_func,
|
||
clear_func,
|
||
user_data,
|
||
FALSE);
|
||
}
|
||
|
||
/**
|
||
* gtk_clipboard_set_with_owner: (skip)
|
||
* @clipboard: a #GtkClipboard
|
||
* @targets: The targets (data formats) in which the
|
||
* functions can provide the data
|
||
* @get_func: (scope async): function to call to get the actual clipboard data
|
||
* @clear_func: (scope async): 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.
|
||
*
|
||
* Returns: %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,
|
||
GtkTargetList *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_GET_CLASS (clipboard)->set_contents (clipboard,
|
||
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().
|
||
*
|
||
* Returns: (nullable) (transfer none): 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_remove_owner_notify (clipboard);
|
||
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 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)
|
||
{
|
||
g_return_if_fail (clipboard != NULL);
|
||
|
||
GTK_CLIPBOARD_GET_CLASS (clipboard)->clear (clipboard);
|
||
}
|
||
|
||
static void
|
||
gtk_clipboard_real_clear (GtkClipboard *clipboard)
|
||
{
|
||
if (clipboard->have_selection)
|
||
gtk_selection_owner_set_for_display (clipboard->display,
|
||
NULL,
|
||
clipboard->selection,
|
||
clipboard_get_timestamp (clipboard));
|
||
}
|
||
|
||
static void
|
||
text_get_func (GtkClipboard *clipboard,
|
||
GtkSelectionData *selection_data,
|
||
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)
|
||
{
|
||
GtkTargetList *targets;
|
||
|
||
g_return_if_fail (clipboard != NULL);
|
||
g_return_if_fail (text != NULL);
|
||
|
||
targets = gtk_target_list_new (NULL, 0);
|
||
gtk_target_list_add_text_targets (targets);
|
||
|
||
if (len < 0)
|
||
len = strlen (text);
|
||
|
||
gtk_clipboard_set_with_data (clipboard,
|
||
targets,
|
||
text_get_func, text_clear_func,
|
||
g_strndup (text, len));
|
||
gtk_clipboard_set_can_store (clipboard, NULL);
|
||
|
||
gtk_target_list_unref (targets);
|
||
}
|
||
|
||
static void
|
||
pixbuf_get_func (GtkClipboard *clipboard,
|
||
GtkSelectionData *selection_data,
|
||
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 *targets;
|
||
|
||
g_return_if_fail (clipboard != NULL);
|
||
g_return_if_fail (GDK_IS_PIXBUF (pixbuf));
|
||
|
||
targets = gtk_target_list_new (NULL, 0);
|
||
gtk_target_list_add_image_targets (targets, TRUE);
|
||
|
||
gtk_clipboard_set_with_data (clipboard,
|
||
targets,
|
||
pixbuf_get_func, pixbuf_clear_func,
|
||
g_object_ref (pixbuf));
|
||
gtk_clipboard_set_can_store (clipboard, NULL);
|
||
|
||
gtk_target_list_unref (targets);
|
||
}
|
||
|
||
/**
|
||
* gtk_clipboard_set_surface:
|
||
* @clipboard: a #GtkClipboard object
|
||
* @surface: a cairo image surface
|
||
*
|
||
* Sets the contents of the clipboard to the given cairo image surface.
|
||
* GTK+ will take responsibility for responding for requests for the
|
||
* image, and for converting the image into the requested format.
|
||
*
|
||
* Since: 3.94
|
||
**/
|
||
void
|
||
gtk_clipboard_set_surface (GtkClipboard *clipboard,
|
||
cairo_surface_t *surface)
|
||
{
|
||
GdkPixbuf *pixbuf;
|
||
|
||
pixbuf = gdk_pixbuf_get_from_surface (surface,
|
||
0, 0,
|
||
cairo_image_surface_get_width (surface),
|
||
cairo_image_surface_get_height (surface));
|
||
gtk_clipboard_set_image (clipboard, pixbuf);
|
||
g_object_unref (pixbuf);
|
||
|
||
}
|
||
|
||
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);
|
||
|
||
g_object_set_qdata (G_OBJECT (widget), request_contents_key_id, info);
|
||
}
|
||
|
||
static RequestContentsInfo *
|
||
get_request_contents_info (GtkWidget *widget)
|
||
{
|
||
if (!request_contents_key_id)
|
||
return NULL;
|
||
else
|
||
return g_object_get_qdata (G_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_widget_get_clipboard (widget, gtk_selection_data_get_selection (selection_data)),
|
||
selection_data,
|
||
request_info->user_data);
|
||
|
||
g_free (request_info);
|
||
|
||
if (widget != get_clipboard_widget (gtk_widget_get_display (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: (scope async): 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)
|
||
{
|
||
g_return_if_fail (clipboard != NULL);
|
||
g_return_if_fail (target != NULL);
|
||
g_return_if_fail (callback != NULL);
|
||
|
||
GTK_CLIPBOARD_GET_CLASS (clipboard)->request_contents (clipboard,
|
||
target,
|
||
callback,
|
||
user_data);
|
||
}
|
||
|
||
static void
|
||
gtk_clipboard_real_request_contents (GtkClipboard *clipboard,
|
||
GdkAtom target,
|
||
GtkClipboardReceivedFunc callback,
|
||
gpointer user_data)
|
||
{
|
||
RequestContentsInfo *info;
|
||
GtkWidget *widget;
|
||
GtkWidget *clipboard_widget;
|
||
|
||
clipboard_widget = get_clipboard_widget (clipboard->display);
|
||
|
||
if (get_request_contents_info (clipboard_widget))
|
||
widget = make_clipboard_widget (clipboard->display, 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 = (gchar *) 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.
|
||
*/
|
||
GdkAtom target = gtk_selection_data_get_target (selection_data);
|
||
|
||
if (target == gdk_atom_intern_static_string ("text/plain;charset=utf-8"))
|
||
{
|
||
gtk_clipboard_request_contents (clipboard,
|
||
gdk_atom_intern_static_string ("UTF8_STRING"),
|
||
request_text_received_func, info);
|
||
return;
|
||
}
|
||
else if (target == gdk_atom_intern_static_string ("UTF8_STRING"))
|
||
{
|
||
gtk_clipboard_request_contents (clipboard,
|
||
gdk_atom_intern_static_string ("COMPOUND_TEXT"),
|
||
request_text_received_func, info);
|
||
return;
|
||
}
|
||
else if (target == gdk_atom_intern_static_string ("COMPOUND_TEXT"))
|
||
{
|
||
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: (scope async): 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_static_string ("text/plain;charset=utf-8"),
|
||
request_text_received_func,
|
||
info);
|
||
}
|
||
|
||
static void
|
||
request_rich_text_received_func (GtkClipboard *clipboard,
|
||
GtkSelectionData *selection_data,
|
||
gpointer data)
|
||
{
|
||
RequestRichTextInfo *info = data;
|
||
guint8 *result = NULL;
|
||
gsize length = 0;
|
||
|
||
result = (guint8 *) gtk_selection_data_get_data (selection_data);
|
||
length = gtk_selection_data_get_length (selection_data);
|
||
|
||
info->current_atom++;
|
||
|
||
if ((!result || length < 1) && (info->current_atom < info->n_atoms))
|
||
{
|
||
gtk_clipboard_request_contents (clipboard, info->atoms[info->current_atom],
|
||
request_rich_text_received_func,
|
||
info);
|
||
return;
|
||
}
|
||
|
||
info->callback (clipboard, gtk_selection_data_get_target (selection_data),
|
||
result, length,
|
||
info->user_data);
|
||
g_free (info->atoms);
|
||
g_free (info);
|
||
}
|
||
|
||
/**
|
||
* gtk_clipboard_request_rich_text:
|
||
* @clipboard: a #GtkClipboard
|
||
* @buffer: a #GtkTextBuffer
|
||
* @callback: (scope async): 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 rich text. When the rich
|
||
* text is later received, @callback will be called.
|
||
*
|
||
* The @text parameter to @callback will contain the resulting rich
|
||
* text if the request succeeded, or %NULL if it failed. The @length
|
||
* parameter will contain @text’s length. This function can fail for
|
||
* various reasons, in particular if the clipboard was empty or if the
|
||
* contents of the clipboard could not be converted into rich text form.
|
||
*
|
||
* Since: 2.10
|
||
**/
|
||
void
|
||
gtk_clipboard_request_rich_text (GtkClipboard *clipboard,
|
||
GtkTextBuffer *buffer,
|
||
GtkClipboardRichTextReceivedFunc callback,
|
||
gpointer user_data)
|
||
{
|
||
RequestRichTextInfo *info;
|
||
|
||
g_return_if_fail (clipboard != NULL);
|
||
g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
|
||
g_return_if_fail (callback != NULL);
|
||
|
||
info = g_new (RequestRichTextInfo, 1);
|
||
info->callback = callback;
|
||
info->atoms = NULL;
|
||
info->n_atoms = 0;
|
||
info->current_atom = 0;
|
||
info->user_data = user_data;
|
||
|
||
info->atoms = gtk_text_buffer_get_deserialize_formats (buffer, &info->n_atoms);
|
||
|
||
gtk_clipboard_request_contents (clipboard, info->atoms[info->current_atom],
|
||
request_rich_text_received_func,
|
||
info);
|
||
}
|
||
|
||
static void
|
||
request_image_received_func (GtkClipboard *clipboard,
|
||
GtkSelectionData *selection_data,
|
||
gpointer data)
|
||
{
|
||
RequestImageInfo *info = data;
|
||
GdkPixbuf *result = NULL;
|
||
|
||
result = gtk_selection_data_get_pixbuf (selection_data);
|
||
|
||
if (!result)
|
||
{
|
||
/* If we asked for image/png and didn't get it, try image/jpeg;
|
||
* if we asked for image/jpeg and didn't get it, try image/gif;
|
||
* if we asked for image/gif and didn't get it, try image/bmp;
|
||
* If we asked for anything else and didn't get it, give up.
|
||
*/
|
||
GdkAtom target = gtk_selection_data_get_target (selection_data);
|
||
|
||
if (target == gdk_atom_intern_static_string ("image/png"))
|
||
{
|
||
gtk_clipboard_request_contents (clipboard,
|
||
gdk_atom_intern_static_string ("image/jpeg"),
|
||
request_image_received_func, info);
|
||
return;
|
||
}
|
||
else if (target == gdk_atom_intern_static_string ("image/jpeg"))
|
||
{
|
||
gtk_clipboard_request_contents (clipboard,
|
||
gdk_atom_intern_static_string ("image/gif"),
|
||
request_image_received_func, info);
|
||
return;
|
||
}
|
||
else if (target == gdk_atom_intern_static_string ("image/gif"))
|
||
{
|
||
gtk_clipboard_request_contents (clipboard,
|
||
gdk_atom_intern_static_string ("image/bmp"),
|
||
request_image_received_func, info);
|
||
return;
|
||
}
|
||
}
|
||
|
||
info->callback (clipboard, result, info->user_data);
|
||
g_free (info);
|
||
|
||
if (result)
|
||
g_object_unref (result);
|
||
}
|
||
|
||
/**
|
||
* gtk_clipboard_request_image:
|
||
* @clipboard: a #GtkClipboard
|
||
* @callback: (scope async): 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)
|
||
{
|
||
RequestImageInfo *info;
|
||
|
||
g_return_if_fail (clipboard != NULL);
|
||
g_return_if_fail (callback != NULL);
|
||
|
||
info = g_new (RequestImageInfo, 1);
|
||
info->callback = callback;
|
||
info->user_data = user_data;
|
||
|
||
gtk_clipboard_request_contents (clipboard,
|
||
gdk_atom_intern_static_string ("image/png"),
|
||
request_image_received_func,
|
||
info);
|
||
}
|
||
|
||
static void
|
||
request_uris_received_func (GtkClipboard *clipboard,
|
||
GtkSelectionData *selection_data,
|
||
gpointer data)
|
||
{
|
||
RequestURIInfo *info = data;
|
||
gchar **uris;
|
||
|
||
uris = gtk_selection_data_get_uris (selection_data);
|
||
info->callback (clipboard, uris, info->user_data);
|
||
g_strfreev (uris);
|
||
|
||
g_slice_free (RequestURIInfo, info);
|
||
}
|
||
|
||
/**
|
||
* gtk_clipboard_request_uris:
|
||
* @clipboard: a #GtkClipboard
|
||
* @callback: (scope async): a function to call when the URIs 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 URIs. When the URIs are
|
||
* later received @callback will be called.
|
||
*
|
||
* The @uris parameter to @callback will contain the resulting array of
|
||
* URIs 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 URI form.
|
||
*
|
||
* Since: 2.14
|
||
**/
|
||
void
|
||
gtk_clipboard_request_uris (GtkClipboard *clipboard,
|
||
GtkClipboardURIReceivedFunc callback,
|
||
gpointer user_data)
|
||
{
|
||
RequestURIInfo *info;
|
||
|
||
g_return_if_fail (clipboard != NULL);
|
||
g_return_if_fail (callback != NULL);
|
||
|
||
info = g_slice_new (RequestURIInfo);
|
||
info->callback = callback;
|
||
info->user_data = user_data;
|
||
|
||
gtk_clipboard_request_contents (clipboard, gdk_atom_intern_static_string ("text/uri-list"),
|
||
request_uris_received_func,
|
||
info);
|
||
}
|
||
|
||
static void
|
||
request_targets_received_func (GtkClipboard *clipboard,
|
||
GtkSelectionData *selection_data,
|
||
gpointer data)
|
||
{
|
||
RequestTargetsInfo *info = data;
|
||
GdkAtom *targets = NULL;
|
||
gint n_targets = 0;
|
||
|
||
gtk_selection_data_get_targets (selection_data, &targets, &n_targets);
|
||
|
||
info->callback (clipboard, targets, n_targets, info->user_data);
|
||
|
||
g_free (info);
|
||
g_free (targets);
|
||
}
|
||
|
||
/**
|
||
* gtk_clipboard_request_targets:
|
||
* @clipboard: a #GtkClipboard
|
||
* @callback: (scope async): 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)
|
||
{
|
||
RequestTargetsInfo *info;
|
||
|
||
g_return_if_fail (clipboard != NULL);
|
||
g_return_if_fail (callback != NULL);
|
||
|
||
/* 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)
|
||
{
|
||
(* callback) (clipboard, clipboard->cached_targets, clipboard->n_cached_targets, user_data);
|
||
return;
|
||
}
|
||
|
||
info = g_new (RequestTargetsInfo, 1);
|
||
info->callback = callback;
|
||
info->user_data = user_data;
|
||
|
||
gtk_clipboard_request_contents (clipboard, gdk_atom_intern_static_string ("TARGETS"),
|
||
request_targets_received_func,
|
||
info);
|
||
}
|
||
|
||
typedef struct
|
||
{
|
||
GMainLoop *loop;
|
||
gpointer data;
|
||
GdkAtom format; /* used by rich text */
|
||
gsize length; /* used by rich text */
|
||
} WaitResults;
|
||
|
||
static void
|
||
clipboard_received_func (GtkClipboard *clipboard,
|
||
GtkSelectionData *selection_data,
|
||
gpointer data)
|
||
{
|
||
WaitResults *results = data;
|
||
|
||
if (gtk_selection_data_get_length (selection_data) >= 0)
|
||
results->data = gtk_selection_data_copy (selection_data);
|
||
|
||
g_main_loop_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.
|
||
*
|
||
* Returns: (nullable): 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)
|
||
{
|
||
WaitResults results;
|
||
|
||
g_return_val_if_fail (clipboard != NULL, NULL);
|
||
g_return_val_if_fail (target != NULL, NULL);
|
||
|
||
results.data = NULL;
|
||
results.loop = g_main_loop_new (NULL, TRUE);
|
||
|
||
gtk_clipboard_request_contents (clipboard, target,
|
||
clipboard_received_func,
|
||
&results);
|
||
|
||
if (g_main_loop_is_running (results.loop))
|
||
{
|
||
gdk_threads_leave ();
|
||
g_main_loop_run (results.loop);
|
||
gdk_threads_enter ();
|
||
}
|
||
|
||
g_main_loop_unref (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_loop_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.
|
||
*
|
||
* Returns: (nullable): 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);
|
||
|
||
results.data = NULL;
|
||
results.loop = g_main_loop_new (NULL, TRUE);
|
||
|
||
gtk_clipboard_request_text (clipboard,
|
||
clipboard_text_received_func,
|
||
&results);
|
||
|
||
if (g_main_loop_is_running (results.loop))
|
||
{
|
||
gdk_threads_leave ();
|
||
g_main_loop_run (results.loop);
|
||
gdk_threads_enter ();
|
||
}
|
||
|
||
g_main_loop_unref (results.loop);
|
||
|
||
return results.data;
|
||
}
|
||
|
||
static void
|
||
clipboard_rich_text_received_func (GtkClipboard *clipboard,
|
||
GdkAtom format,
|
||
const guint8 *text,
|
||
gsize length,
|
||
gpointer data)
|
||
{
|
||
WaitResults *results = data;
|
||
|
||
results->data = g_memdup (text, length);
|
||
results->format = format;
|
||
results->length = length;
|
||
g_main_loop_quit (results->loop);
|
||
}
|
||
|
||
/**
|
||
* gtk_clipboard_wait_for_rich_text:
|
||
* @clipboard: a #GtkClipboard
|
||
* @buffer: a #GtkTextBuffer
|
||
* @format: (out): return location for the format of the returned data
|
||
* @length: (out): return location for the length of the returned data
|
||
*
|
||
* Requests the contents of the clipboard as rich text. This function
|
||
* waits for the data to be received using the main loop, so events,
|
||
* timeouts, etc, may be dispatched during the wait.
|
||
*
|
||
* Returns: (nullable) (array length=length) (transfer full): a
|
||
* newly-allocated binary block of data 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.)
|
||
*
|
||
* Since: 2.10
|
||
**/
|
||
guint8 *
|
||
gtk_clipboard_wait_for_rich_text (GtkClipboard *clipboard,
|
||
GtkTextBuffer *buffer,
|
||
GdkAtom *format,
|
||
gsize *length)
|
||
{
|
||
WaitResults results;
|
||
|
||
g_return_val_if_fail (clipboard != NULL, NULL);
|
||
g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL);
|
||
g_return_val_if_fail (format != NULL, NULL);
|
||
g_return_val_if_fail (length != NULL, NULL);
|
||
|
||
results.data = NULL;
|
||
results.loop = g_main_loop_new (NULL, TRUE);
|
||
|
||
gtk_clipboard_request_rich_text (clipboard, buffer,
|
||
clipboard_rich_text_received_func,
|
||
&results);
|
||
|
||
if (g_main_loop_is_running (results.loop))
|
||
{
|
||
gdk_threads_leave ();
|
||
g_main_loop_run (results.loop);
|
||
gdk_threads_enter ();
|
||
}
|
||
|
||
g_main_loop_unref (results.loop);
|
||
|
||
*format = results.format;
|
||
*length = results.length;
|
||
|
||
return results.data;
|
||
}
|
||
|
||
static void
|
||
clipboard_image_received_func (GtkClipboard *clipboard,
|
||
GdkPixbuf *pixbuf,
|
||
gpointer data)
|
||
{
|
||
WaitResults *results = data;
|
||
|
||
if (pixbuf)
|
||
results->data = g_object_ref (pixbuf);
|
||
|
||
g_main_loop_quit (results->loop);
|
||
}
|
||
|
||
static void
|
||
clipboard_surface_received_func (GtkClipboard *clipboard,
|
||
GdkPixbuf *pixbuf,
|
||
gpointer data)
|
||
{
|
||
WaitResults *results = data;
|
||
|
||
if (pixbuf)
|
||
results->data = gdk_cairo_surface_create_from_pixbuf (pixbuf, 1, NULL);
|
||
|
||
g_main_loop_quit (results->loop);
|
||
}
|
||
|
||
/**
|
||
* 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.
|
||
*
|
||
* Returns: (nullable) (transfer full): 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)
|
||
{
|
||
WaitResults results;
|
||
|
||
g_return_val_if_fail (clipboard != NULL, NULL);
|
||
|
||
results.data = NULL;
|
||
results.loop = g_main_loop_new (NULL, TRUE);
|
||
|
||
gtk_clipboard_request_image (clipboard,
|
||
clipboard_image_received_func,
|
||
&results);
|
||
|
||
if (g_main_loop_is_running (results.loop))
|
||
{
|
||
gdk_threads_leave ();
|
||
g_main_loop_run (results.loop);
|
||
gdk_threads_enter ();
|
||
}
|
||
|
||
g_main_loop_unref (results.loop);
|
||
|
||
return results.data;
|
||
}
|
||
|
||
/**
|
||
* gtk_clipboard_wait_for_surface:
|
||
* @clipboard: a #GtkClipboard
|
||
*
|
||
* Requests the contents of the clipboard as image and converts
|
||
* the result to a cairo surface. This function waits for
|
||
* the data to be received using the main loop, so events,
|
||
* timeouts, etc, may be dispatched during the wait.
|
||
*
|
||
* Returns: (nullable) (transfer full): a newly-allocated cairo surface
|
||
* object which must be disposed with cairo_surface_destroy(), 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
|
||
**/
|
||
cairo_surface_t *
|
||
gtk_clipboard_wait_for_surface (GtkClipboard *clipboard)
|
||
{
|
||
WaitResults results;
|
||
|
||
g_return_val_if_fail (clipboard != NULL, NULL);
|
||
|
||
results.data = NULL;
|
||
results.loop = g_main_loop_new (NULL, TRUE);
|
||
|
||
gtk_clipboard_request_image (clipboard,
|
||
clipboard_surface_received_func,
|
||
&results);
|
||
|
||
if (g_main_loop_is_running (results.loop))
|
||
{
|
||
gdk_threads_leave ();
|
||
g_main_loop_run (results.loop);
|
||
gdk_threads_enter ();
|
||
}
|
||
|
||
g_main_loop_unref (results.loop);
|
||
|
||
return results.data;
|
||
}
|
||
|
||
static void
|
||
clipboard_uris_received_func (GtkClipboard *clipboard,
|
||
gchar **uris,
|
||
gpointer data)
|
||
{
|
||
WaitResults *results = data;
|
||
|
||
results->data = g_strdupv (uris);
|
||
g_main_loop_quit (results->loop);
|
||
}
|
||
|
||
/**
|
||
* gtk_clipboard_wait_for_uris:
|
||
* @clipboard: a #GtkClipboard
|
||
*
|
||
* Requests the contents of the clipboard as URIs. This function waits
|
||
* for the data to be received using the main loop, so events,
|
||
* timeouts, etc, may be dispatched during the wait.
|
||
*
|
||
* Returns: (nullable) (array zero-terminated=1) (element-type utf8) (transfer full):
|
||
* a newly-allocated %NULL-terminated array of strings which must
|
||
* be freed with g_strfreev(), 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 URI form.)
|
||
*
|
||
* Since: 2.14
|
||
**/
|
||
gchar **
|
||
gtk_clipboard_wait_for_uris (GtkClipboard *clipboard)
|
||
{
|
||
WaitResults results;
|
||
|
||
g_return_val_if_fail (clipboard != NULL, NULL);
|
||
|
||
results.data = NULL;
|
||
results.loop = g_main_loop_new (NULL, TRUE);
|
||
|
||
gtk_clipboard_request_uris (clipboard,
|
||
clipboard_uris_received_func,
|
||
&results);
|
||
|
||
if (g_main_loop_is_running (results.loop))
|
||
{
|
||
gdk_threads_leave ();
|
||
g_main_loop_run (results.loop);
|
||
gdk_threads_enter ();
|
||
}
|
||
|
||
g_main_loop_unref (results.loop);
|
||
|
||
return results.data;
|
||
}
|
||
|
||
/**
|
||
* gtk_clipboard_get_display:
|
||
* @clipboard: a #GtkClipboard
|
||
*
|
||
* Gets the #GdkDisplay associated with @clipboard
|
||
*
|
||
* Returns: (transfer none): 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.
|
||
*
|
||
* Returns: %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;
|
||
}
|
||
|
||
/**
|
||
* gtk_clipboard_wait_is_rich_text_available:
|
||
* @clipboard: a #GtkClipboard
|
||
* @buffer: a #GtkTextBuffer
|
||
*
|
||
* Test to see if there is rich text available to be pasted
|
||
* This is done by requesting the TARGETS atom and checking
|
||
* if it contains any of the supported rich 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_rich_text() since it doesn’t need to retrieve
|
||
* the actual text.
|
||
*
|
||
* Returns: %TRUE is there is rich text available, %FALSE otherwise.
|
||
*
|
||
* Since: 2.10
|
||
**/
|
||
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;
|
||
}
|
||
|
||
/**
|
||
* gtk_clipboard_wait_is_image_available:
|
||
* @clipboard: a #GtkClipboard
|
||
*
|
||
* Test to see if there is an image available to be pasted
|
||
* This is done by requesting the TARGETS atom and checking
|
||
* if it contains any of the supported image 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_image() since it doesn’t need to retrieve
|
||
* the actual image data.
|
||
*
|
||
* Returns: %TRUE is there is an image available, %FALSE otherwise.
|
||
*
|
||
* Since: 2.6
|
||
**/
|
||
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_is_uris_available:
|
||
* @clipboard: a #GtkClipboard
|
||
*
|
||
* Test to see if there is a list of URIs available to be pasted
|
||
* This is done by requesting the TARGETS atom and checking
|
||
* if it contains the URI 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_uris() since it doesn’t need to retrieve
|
||
* the actual URI data.
|
||
*
|
||
* Returns: %TRUE is there is an URI list available, %FALSE otherwise.
|
||
*
|
||
* Since: 2.14
|
||
**/
|
||
gboolean
|
||
gtk_clipboard_wait_is_uris_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_uri (data);
|
||
gtk_selection_data_free (data);
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
/**
|
||
* gtk_clipboard_wait_for_targets:
|
||
* @clipboard: a #GtkClipboard
|
||
* @targets: (out) (array length=n_targets) (transfer container): location
|
||
* to store an array of targets. The result stored here must
|
||
* be freed with g_free().
|
||
* @n_targets: (out): 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.
|
||
*
|
||
* Returns: %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 == NULL)
|
||
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)
|
||
{
|
||
clipboard = g_object_new (GTK_TYPE_CLIPBOARD, NULL);
|
||
|
||
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)
|
||
{
|
||
g_free (clipboard->cached_targets);
|
||
clipboard->cached_targets = NULL;
|
||
clipboard->n_cached_targets = -1;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* 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.
|
||
*
|
||
* Returns: %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 #GtkClipboard::owner-change signal on the appropriate @clipboard.
|
||
*
|
||
* Since: 2.6
|
||
**/
|
||
void
|
||
_gtk_clipboard_handle_event (GdkEventOwnerChange *event)
|
||
{
|
||
GdkDisplay *display;
|
||
GdkAtom selection;
|
||
GtkClipboard *clipboard;
|
||
|
||
gdk_event_get_selection ((GdkEvent *)event, &selection);
|
||
display = gdk_window_get_display (gdk_event_get_window ((GdkEvent *)event));
|
||
clipboard = clipboard_peek (display, selection, TRUE);
|
||
|
||
if (clipboard)
|
||
g_signal_emit (clipboard,
|
||
clipboard_signals[OWNER_CHANGE], 0, event, NULL);
|
||
}
|
||
|
||
static gboolean
|
||
gtk_clipboard_store_timeout (GtkClipboard *clipboard)
|
||
{
|
||
g_main_loop_quit (clipboard->store_loop);
|
||
|
||
return G_SOURCE_REMOVE;
|
||
}
|
||
|
||
/**
|
||
* gtk_clipboard_set_can_store:
|
||
* @clipboard: a #GtkClipboard
|
||
* @targets: (allow-none): The targets (data formats) in which the
|
||
* functions can provide the data 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,
|
||
GtkTargetList *targets)
|
||
{
|
||
g_return_if_fail (GTK_IS_CLIPBOARD (clipboard));
|
||
|
||
GTK_CLIPBOARD_GET_CLASS (clipboard)->set_can_store (clipboard, targets);
|
||
}
|
||
|
||
static void
|
||
gtk_clipboard_real_set_can_store (GtkClipboard *clipboard,
|
||
GtkTargetList *targets)
|
||
{
|
||
GtkWidget *clipboard_widget;
|
||
guint n_atoms;
|
||
|
||
if (clipboard->selection != GDK_SELECTION_CLIPBOARD)
|
||
return;
|
||
|
||
g_free (clipboard->storable_targets);
|
||
|
||
clipboard_widget = get_clipboard_widget (clipboard->display);
|
||
|
||
/* n_storable_targets being -1 means that
|
||
* gtk_clipboard_set_can_store hasn't been called since the
|
||
* clipboard owner changed. We only want to add SAVE_TARGETS and
|
||
* ref the owner once , so we do that here
|
||
*/
|
||
if (clipboard->n_storable_targets == -1)
|
||
{
|
||
gtk_selection_add_target (clipboard_widget,
|
||
clipboard->selection,
|
||
gdk_atom_intern_static_string ("SAVE_TARGETS"));
|
||
|
||
/* Ref the owner so it won't go away */
|
||
if (clipboard->have_owner)
|
||
g_object_ref (clipboard->user_data);
|
||
}
|
||
|
||
if (targets)
|
||
{
|
||
clipboard->storable_targets = gtk_target_list_get_atoms (targets, &n_atoms);
|
||
clipboard->n_storable_targets = n_atoms;
|
||
}
|
||
else
|
||
{
|
||
clipboard->storable_targets = NULL;
|
||
clipboard->n_storable_targets = 0;
|
||
}
|
||
}
|
||
|
||
static gboolean
|
||
gtk_clipboard_selection_notify (GtkWidget *widget,
|
||
GdkEventSelection *event,
|
||
GtkClipboard *clipboard)
|
||
{
|
||
GdkAtom selection;
|
||
|
||
gdk_event_get_selection ((GdkEvent *)event, &selection);
|
||
if (selection == gdk_atom_intern_static_string ("CLIPBOARD_MANAGER") &&
|
||
clipboard->storing_selection)
|
||
g_main_loop_quit (clipboard->store_loop);
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
/**
|
||
* 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)
|
||
{
|
||
g_return_if_fail (GTK_IS_CLIPBOARD (clipboard));
|
||
|
||
GTK_CLIPBOARD_GET_CLASS (clipboard)->store (clipboard);
|
||
}
|
||
|
||
static void
|
||
gtk_clipboard_real_store (GtkClipboard *clipboard)
|
||
{
|
||
GtkWidget *clipboard_widget;
|
||
|
||
if (clipboard->n_storable_targets < 0)
|
||
return;
|
||
|
||
if (!gdk_display_supports_clipboard_persistence (clipboard->display))
|
||
return;
|
||
|
||
g_object_ref (clipboard);
|
||
|
||
clipboard_widget = get_clipboard_widget (clipboard->display);
|
||
clipboard->notify_signal_id = g_signal_connect (clipboard_widget,
|
||
"selection-notify-event",
|
||
G_CALLBACK (gtk_clipboard_selection_notify),
|
||
clipboard);
|
||
|
||
gdk_display_store_clipboard (clipboard->display,
|
||
gtk_widget_get_window (clipboard_widget),
|
||
clipboard_get_timestamp (clipboard),
|
||
clipboard->storable_targets,
|
||
clipboard->n_storable_targets);
|
||
|
||
clipboard->storing_selection = TRUE;
|
||
|
||
clipboard->store_loop = g_main_loop_new (NULL, TRUE);
|
||
clipboard->store_timeout = g_timeout_add_seconds (10, (GSourceFunc) gtk_clipboard_store_timeout, clipboard);
|
||
g_source_set_name_by_id (clipboard->store_timeout, "[gtk+] gtk_clipboard_store_timeout");
|
||
|
||
if (g_main_loop_is_running (clipboard->store_loop))
|
||
{
|
||
gdk_threads_leave ();
|
||
g_main_loop_run (clipboard->store_loop);
|
||
gdk_threads_enter ();
|
||
}
|
||
|
||
g_main_loop_unref (clipboard->store_loop);
|
||
clipboard->store_loop = NULL;
|
||
|
||
g_source_remove (clipboard->store_timeout);
|
||
clipboard->store_timeout = 0;
|
||
g_signal_handler_disconnect (clipboard_widget, clipboard->notify_signal_id);
|
||
clipboard->notify_signal_id = 0;
|
||
|
||
clipboard->storing_selection = FALSE;
|
||
|
||
g_object_unref (clipboard);
|
||
}
|
||
|
||
/* Stores all clipboard selections on all displays, called from
|
||
* gtk_main_quit ().
|
||
*/
|
||
void
|
||
_gtk_clipboard_store_all (void)
|
||
{
|
||
GtkClipboard *clipboard;
|
||
GSList *displays, *list;
|
||
|
||
displays = gdk_display_manager_list_displays (gdk_display_manager_get ());
|
||
|
||
list = displays;
|
||
while (list)
|
||
{
|
||
GdkDisplay *display = list->data;
|
||
|
||
clipboard = clipboard_peek (display, GDK_SELECTION_CLIPBOARD, TRUE);
|
||
|
||
if (clipboard)
|
||
gtk_clipboard_store (clipboard);
|
||
|
||
list = list->next;
|
||
}
|
||
g_slist_free (displays);
|
||
|
||
}
|
||
|
||
/**
|
||
* gtk_clipboard_get_selection:
|
||
* @clipboard: a #GtkClipboard
|
||
*
|
||
* Gets the selection that this clipboard is for.
|
||
*
|
||
* Returns: the selection
|
||
*
|
||
* Since: 3.22
|
||
*/
|
||
GdkAtom
|
||
gtk_clipboard_get_selection (GtkClipboard *clipboard)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_CLIPBOARD (clipboard), NULL);
|
||
|
||
return clipboard->selection;
|
||
}
|