* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
+ * modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
+ * Lesser General Public License for more details.
*
- * You should have received a copy of the GNU Library General Public
+ * You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
-/* This file implements most of the work of the ICCM selection protocol.
+/* This file implements most of the work of the ICCCM selection protocol.
* The code was written after an intensive study of the equivalent part
* of John Ousterhout's Tk toolkit, and does many things in much the
* same way.
*
- * The one thing in the ICCM that isn't fully supported here (or in Tk)
+ * The one thing in the ICCCM that isn't fully supported here (or in Tk)
* is side effects targets. For these to be handled properly, MULTIPLE
* targets need to be done in the order specified. This cannot be
* guaranteed with the way we do things, since if we are doing INCR
possible though that it somehow thinks we are responding negatively
to the TARGETS request, though I don't really think so ... */
+/*
+ * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
+ * file for a list of people on the GTK+ Team. See the ChangeLog
+ * files for a list of changes. These files are distributed with
+ * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
+ */
+
+#include <config.h>
#include <stdarg.h>
#include <string.h>
-#include <gdk/gdkx.h>
-/* we need this for gdk_window_lookup() */
+#include "gdk.h"
+
#include "gtkmain.h"
#include "gtkselection.h"
-#include "gtksignal.h"
-/* #define DEBUG_SELECTION */
+#ifdef GDK_WINDOWING_X11
+#include "x11/gdkx.h"
+#endif
+
+#define DEBUG_SELECTION
/* Maximum size of a sent chunk, in bytes. Also the default size of
our buffers */
-#define GTK_SELECTION_MAX_SIZE 4000
+#ifdef GDK_WINDOWING_WIN32
+/* No chunks on Win32 */
+#define GTK_SELECTION_MAX_SIZE(display) G_MAXINT
+#else
+#define GTK_SELECTION_MAX_SIZE(display) \
+ MIN(262144, \
+ XExtendedMaxRequestSize (GDK_DISPLAY_XDISPLAY (display)) == 0 \
+ ? XMaxRequestSize (GDK_DISPLAY_XDISPLAY (display)) - 100 \
+ : XExtendedMaxRequestSize (GDK_DISPLAY_XDISPLAY (display)) - 100)
+#endif
+
+#define IDLE_ABORT_TIME 300
enum {
INCR,
struct _GtkSelectionInfo
{
- GdkAtom selection;
- GtkWidget *widget; /* widget that owns selection */
- guint32 time; /* time used to acquire selection */
+ GdkAtom selection;
+ GtkWidget *widget; /* widget that owns selection */
+ guint32 time; /* time used to acquire selection */
+ GdkDisplay *display; /* needed in gtk_selection_remove_all */
};
struct _GtkIncrConversion
struct _GtkIncrInfo
{
- GtkWidget *widget; /* Selection owner */
GdkWindow *requestor; /* Requestor window - we create a GdkWindow
so we can receive events */
GdkAtom selection; /* Selection we're sending */
};
/* Local Functions */
-static void gtk_selection_init (void);
-static gint gtk_selection_incr_timeout (GtkIncrInfo *info);
-static gint gtk_selection_retrieval_timeout (GtkRetrievalInfo *info);
-static void gtk_selection_retrieval_report (GtkRetrievalInfo *info,
- GdkAtom type, gint format,
- guchar *buffer, gint length,
- guint32 time);
-static void gtk_selection_invoke_handler (GtkWidget *widget,
- GtkSelectionData *data,
- guint time);
-static void gtk_selection_default_handler (GtkWidget *widget,
- GtkSelectionData *data);
+static void gtk_selection_init (void);
+static gint gtk_selection_incr_timeout (GtkIncrInfo *info);
+static gint gtk_selection_retrieval_timeout (GtkRetrievalInfo *info);
+static void gtk_selection_retrieval_report (GtkRetrievalInfo *info,
+ GdkAtom type,
+ gint format,
+ guchar *buffer,
+ gint length,
+ guint32 time);
+static void gtk_selection_invoke_handler (GtkWidget *widget,
+ GtkSelectionData *data,
+ guint time);
+static void gtk_selection_default_handler (GtkWidget *widget,
+ GtkSelectionData *data);
+static int gtk_selection_bytes_per_item (gint format);
/* Local Data */
static gint initialize = TRUE;
static GList *current_selections = NULL;
static GdkAtom gtk_selection_atoms[LAST_ATOM];
-static const char *gtk_selection_handler_key = "gtk-selection-handlers";
+static const char gtk_selection_handler_key[] = "gtk-selection-handlers";
/****************
* Target Lists *
void
gtk_target_list_ref (GtkTargetList *list)
{
+ g_return_if_fail (list != NULL);
+
list->ref_count++;
}
void
gtk_target_list_unref (GtkTargetList *list)
{
+ g_return_if_fail (list != NULL);
+ g_return_if_fail (list->ref_count > 0);
+
list->ref_count--;
if (list->ref_count == 0)
{
{
g_free (pair);
- list->list = g_list_remove (list->list, tmp_list);
+ list->list = g_list_remove_link (list->list, tmp_list);
g_list_free_1 (tmp_list);
return;
return FALSE;
}
-
-/*************************************************************
- * gtk_selection_owner_set:
- * Claim ownership of a selection.
- * arguments:
- * widget: new selection owner
- * selection: which selection
- * time: time (use GDK_CURRENT_TIME only if necessary)
+/**
+ * gtk_selection_owner_set_for_display:
+ * @display: the #Gdkdisplay where the selection is set
+ * @widget: new selection owner (a #GdkWidget), or %NULL.
+ * @selection: an interned atom representing the selection to claim.
+ * @time_: timestamp with which to claim the selection
*
- * results:
- *************************************************************/
-
-gint
-gtk_selection_owner_set (GtkWidget *widget,
- GdkAtom selection,
- guint32 time)
+ * Claim ownership of a given selection for a particular widget, or,
+ * if @widget is %NULL, release ownership of the selection.
+ *
+ * Return value: TRUE if the operation succeeded
+ *
+ * Since: 2.2
+ */
+gboolean
+gtk_selection_owner_set_for_display (GdkDisplay *display,
+ GtkWidget *widget,
+ GdkAtom selection,
+ guint32 time)
{
GList *tmp_list;
GtkWidget *old_owner;
- GtkSelectionInfo *selection_info;
+ GtkSelectionInfo *selection_info = NULL;
GdkWindow *window;
+
+ g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
+ g_return_val_if_fail (selection != GDK_NONE, FALSE);
+ g_return_val_if_fail (widget == NULL || GTK_WIDGET_REALIZED (widget), FALSE);
+ g_return_val_if_fail (widget == NULL || gtk_widget_get_display (widget) == display, FALSE);
if (widget == NULL)
window = NULL;
else
- {
- if (!GTK_WIDGET_REALIZED (widget))
- gtk_widget_realize (widget);
-
- window = widget->window;
- }
-
+ window = widget->window;
+
tmp_list = current_selections;
while (tmp_list)
{
- selection_info = (GtkSelectionInfo *)tmp_list->data;
-
- if (selection_info->selection == selection)
- break;
+ if (((GtkSelectionInfo *)tmp_list->data)->selection == selection)
+ {
+ selection_info = tmp_list->data;
+ break;
+ }
tmp_list = tmp_list->next;
}
- if (tmp_list == NULL)
- selection_info = NULL;
- else
- if (selection_info->widget == widget)
- return TRUE;
-
- if (gdk_selection_owner_set (window, selection, time, TRUE))
+ if (gdk_selection_owner_set_for_display (display, window, selection, time, TRUE))
{
old_owner = NULL;
selection_info->selection = selection;
selection_info->widget = widget;
selection_info->time = time;
- current_selections = g_list_append (current_selections,
- selection_info);
+ selection_info->display = display;
+ current_selections = g_list_prepend (current_selections,
+ selection_info);
}
else
{
old_owner = selection_info->widget;
selection_info->widget = widget;
selection_info->time = time;
+ selection_info->display = display;
}
}
/* If another widget in the application lost the selection,
- * send it a GDK_SELECTION_CLEAR event, unless we're setting
- * the owner to None, in which case an event will be sent */
- if (old_owner && (widget != NULL))
+ * send it a GDK_SELECTION_CLEAR event.
+ */
+ if (old_owner && old_owner != widget)
{
- GdkEventSelection event;
+ GdkEvent *event = gdk_event_new (GDK_SELECTION_CLEAR);
- event.type = GDK_SELECTION_CLEAR;
- event.window = old_owner->window;
- event.selection = selection;
- event.time = time;
+ event->selection.window = g_object_ref (old_owner->window);
+ event->selection.selection = selection;
+ event->selection.time = time;
- gtk_widget_event (old_owner, (GdkEvent *) &event);
+ gtk_widget_event (old_owner, event);
+
+ gdk_event_free (event);
}
return TRUE;
}
return FALSE;
}
+/**
+ * gtk_selection_owner_set:
+ * @widget: a #GtkWidget, or %NULL.
+ * @selection: an interned atom representing the selection to claim
+ * @time_: timestamp with which to claim the selection
+ *
+ * Claims ownership of a given selection for a particular widget,
+ * or, if @widget is %NULL, release ownership of the selection.
+ *
+ * Return value: %TRUE if the operation succeeded
+ **/
+gboolean
+gtk_selection_owner_set (GtkWidget *widget,
+ GdkAtom selection,
+ guint32 time)
+{
+ GdkDisplay *display;
+
+ g_return_val_if_fail (widget == NULL || GTK_WIDGET_REALIZED (widget), FALSE);
+ g_return_val_if_fail (selection != GDK_NONE, FALSE);
+
+ if (widget)
+ display = gtk_widget_get_display (widget);
+ else
+ {
+ GTK_NOTE (MULTIHEAD,
+ g_warning ("gtk_selection_owner_set (NULL,...) is not multihead safe"));
+
+ display = gdk_display_get_default ();
+ }
+
+ return gtk_selection_owner_set_for_display (display, widget,
+ selection, time);
+}
+
/*************************************************************
* gtk_selection_add_target
* Add specified target to list of supported targets
GList *tmp_list;
GList *lists;
- lists = gtk_object_get_data (GTK_OBJECT (widget), gtk_selection_handler_key);
+ lists = g_object_get_data (G_OBJECT (widget), gtk_selection_handler_key);
tmp_list = lists;
while (tmp_list)
sellist->list = gtk_target_list_new (NULL, 0);
lists = g_list_prepend (lists, sellist);
- gtk_object_set_data (GTK_OBJECT (widget), gtk_selection_handler_key, lists);
+ g_object_set_data (G_OBJECT (widget), gtk_selection_handler_key, lists);
return sellist->list;
}
GList *tmp_list;
GList *lists;
- lists = gtk_object_get_data (GTK_OBJECT (widget), gtk_selection_handler_key);
+ lists = g_object_get_data (G_OBJECT (widget), gtk_selection_handler_key);
tmp_list = lists;
while (tmp_list)
}
g_list_free (lists);
- gtk_object_set_data (GTK_OBJECT (widget), gtk_selection_handler_key, NULL);
+ g_object_set_data (G_OBJECT (widget), gtk_selection_handler_key, NULL);
+}
+
+/**
+ * gtk_selection_clear_targets:
+ * @widget: a #GtkWidget
+ * @selection: an atom representing a selection
+ *
+ * Remove all targets registered for the given selection for the
+ * widget.
+ **/
+void
+gtk_selection_clear_targets (GtkWidget *widget,
+ GdkAtom selection)
+{
+ GtkSelectionTargetList *sellist;
+ GList *tmp_list;
+ GList *lists;
+
+ g_return_if_fail (GTK_IS_WIDGET (widget));
+ g_return_if_fail (selection != GDK_NONE);
+
+ lists = g_object_get_data (G_OBJECT (widget), gtk_selection_handler_key);
+
+ tmp_list = lists;
+ while (tmp_list)
+ {
+ sellist = tmp_list->data;
+ if (sellist->selection == selection)
+ {
+ lists = g_list_delete_link (lists, tmp_list);
+ gtk_target_list_unref (sellist->list);
+ g_free (sellist);
+
+ break;
+ }
+
+ tmp_list = tmp_list->next;
+ }
+
+ g_object_set_data (G_OBJECT (widget), gtk_selection_handler_key, lists);
}
void
{
GtkTargetList *list;
- g_return_if_fail (widget != NULL);
+ g_return_if_fail (GTK_IS_WIDGET (widget));
+ g_return_if_fail (selection != GDK_NONE);
list = gtk_selection_target_list_get (widget, selection);
gtk_target_list_add (list, target, 0, info);
guint ntargets)
{
GtkTargetList *list;
-
- g_return_if_fail (widget != NULL);
+
+ g_return_if_fail (GTK_IS_WIDGET (widget));
+ g_return_if_fail (selection != GDK_NONE);
g_return_if_fail (targets != NULL);
list = gtk_selection_target_list_get (widget, selection);
gtk_target_list_add_table (list, targets, ntargets);
}
+
/*************************************************************
* gtk_selection_remove_all:
* Removes all handlers and unsets ownership of all
/* Remove pending requests/incrs for this widget */
- tmp_list = current_incrs;
- while (tmp_list)
- {
- next = tmp_list->next;
- if (((GtkIncrInfo *)tmp_list->data)->widget == widget)
- {
- current_incrs = g_list_remove_link (current_incrs, tmp_list);
- /* structure will be freed in timeout */
- g_list_free (tmp_list);
- }
- tmp_list = next;
- }
-
tmp_list = current_retrievals;
while (tmp_list)
{
if (selection_info->widget == widget)
{
- gdk_selection_owner_set (NULL,
- selection_info->selection,
- GDK_CURRENT_TIME, FALSE);
- current_selections = g_list_remove_link (current_selections,
+ gdk_selection_owner_set_for_display (selection_info->display,
+ NULL,
+ selection_info->selection,
+ GDK_CURRENT_TIME, FALSE);
+ current_selections = g_list_remove_link (current_selections,
tmp_list);
g_list_free (tmp_list);
g_free (selection_info);
* this widget).
*************************************************************/
-gint
+gboolean
gtk_selection_convert (GtkWidget *widget,
GdkAtom selection,
GdkAtom target,
GtkRetrievalInfo *info;
GList *tmp_list;
GdkWindow *owner_window;
+ GdkDisplay *display;
- g_return_val_if_fail (widget != NULL, FALSE);
+ g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
+ g_return_val_if_fail (selection != GDK_NONE, FALSE);
if (initialize)
gtk_selection_init ();
info->widget = widget;
info->selection = selection;
info->target = target;
+ info->idle_time = 0;
info->buffer = NULL;
info->offset = -1;
/* Check if this process has current owner. If so, call handler
procedure directly to avoid deadlocks with INCR. */
-
- owner_window = gdk_selection_owner_get (selection);
+
+ display = gtk_widget_get_display (widget);
+ owner_window = gdk_selection_owner_get_for_display (display, selection);
if (owner_window != NULL)
{
selection_data.target = target;
selection_data.data = NULL;
selection_data.length = -1;
+ selection_data.display = display;
gdk_window_get_user_data (owner_window, (gpointer *)&owner_widget);
current_retrievals = g_list_append (current_retrievals, info);
gdk_selection_convert (widget->window, selection, target, time);
- gtk_timeout_add (1000, (GtkFunction) gtk_selection_retrieval_timeout, info);
+ g_timeout_add (1000, (GSourceFunc) gtk_selection_retrieval_timeout, info);
return TRUE;
}
gtk_selection_data_set (GtkSelectionData *selection_data,
GdkAtom type,
gint format,
- guchar *data,
+ const guchar *data,
gint length)
{
if (selection_data->data)
selection_data->length = length;
}
+static GdkAtom utf8_atom;
+static GdkAtom text_atom;
+static GdkAtom ctext_atom;
+
+static void
+init_atoms (void)
+{
+ if (!utf8_atom)
+ {
+ utf8_atom = gdk_atom_intern ("UTF8_STRING", FALSE);
+ text_atom = gdk_atom_intern ("TEXT", FALSE);
+ ctext_atom = gdk_atom_intern ("COMPOUND_TEXT", FALSE);
+ }
+}
+
+static gboolean
+selection_set_string (GtkSelectionData *selection_data,
+ const gchar *str,
+ gint len)
+{
+ gchar *tmp = g_strndup (str, len);
+ gchar *latin1 = gdk_utf8_to_string_target (tmp);
+ g_free (tmp);
+
+ if (latin1)
+ {
+ gtk_selection_data_set (selection_data,
+ GDK_SELECTION_TYPE_STRING,
+ 8, latin1, strlen (latin1));
+ g_free (latin1);
+
+ return TRUE;
+ }
+ else
+ return FALSE;
+}
+
+static gboolean
+selection_set_compound_text (GtkSelectionData *selection_data,
+ const gchar *str,
+ gint len)
+{
+ gchar *tmp;
+ guchar *text;
+ GdkAtom encoding;
+ gint format;
+ gint new_length;
+ gboolean result = FALSE;
+
+ tmp = g_strndup (str, len);
+ if (gdk_utf8_to_compound_text_for_display (selection_data->display, tmp,
+ &encoding, &format, &text, &new_length))
+ {
+ gtk_selection_data_set (selection_data, encoding, format, text, new_length);
+ gdk_free_compound_text (text);
+
+ result = TRUE;
+ }
+
+ g_free (tmp);
+
+ return result;
+}
+
+/**
+ * gtk_selection_data_set_text:
+ * @selection_data: a #GtkSelectionData
+ * @str: a UTF-8 string
+ * @len: the length of @str, or -1 if @str is nul-terminated.
+ *
+ * Sets the contents of the selection from a UTF-8 encoded string.
+ * The string is converted to the form determined by
+ * @selection_data->target.
+ *
+ * Return value: %TRUE if the selection was successfully set,
+ * otherwise %FALSE.
+ **/
+gboolean
+gtk_selection_data_set_text (GtkSelectionData *selection_data,
+ const gchar *str,
+ gint len)
+{
+ if (len < 0)
+ len = strlen (str);
+
+ init_atoms ();
+
+ if (selection_data->target == utf8_atom)
+ {
+ gtk_selection_data_set (selection_data,
+ utf8_atom,
+ 8, (guchar *)str, len);
+ return TRUE;
+ }
+ else if (selection_data->target == GDK_TARGET_STRING)
+ {
+ return selection_set_string (selection_data, str, len);
+ }
+ else if (selection_data->target == ctext_atom ||
+ selection_data->target == text_atom)
+ {
+ if (selection_set_compound_text (selection_data, str, len))
+ return TRUE;
+ else if (selection_data->target == text_atom)
+ return selection_set_string (selection_data, str, len);
+ }
+
+ return FALSE;
+}
+
+/**
+ * gtk_selection_data_get_text:
+ * @selection_data: a #GtkSelectionData
+ *
+ * Gets the contents of the selection data as a UTF-8 string.
+ *
+ * Return value: if the selection data contained a recognized
+ * text type and it could be converted to UTF-8, a newly allocated
+ * string containing the converted text, otherwise %NULL.
+ * If the result is non-%NULL it must be freed with g_free().
+ **/
+guchar *
+gtk_selection_data_get_text (GtkSelectionData *selection_data)
+{
+ guchar *result = NULL;
+
+ init_atoms ();
+
+ if (selection_data->length >= 0 &&
+ (selection_data->type == GDK_TARGET_STRING ||
+ selection_data->type == ctext_atom ||
+ selection_data->type == utf8_atom))
+ {
+ gchar **list;
+ gint i;
+ gint count = gdk_text_property_to_utf8_list_for_display (selection_data->display,
+ selection_data->type,
+ selection_data->format,
+ selection_data->data,
+ selection_data->length,
+ &list);
+ if (count > 0)
+ result = list[0];
+
+ for (i = 1; i < count; i++)
+ g_free (list[i]);
+ g_free (list);
+ }
+
+ return result;
+}
+
+/**
+ * gtk_selection_data_get_targets:
+ * @selection_data: a #GtkSelectionData object
+ * @targets: location to store an array of targets. The result
+ * stored here must be freed with g_free().
+ * @n_atoms: location to store number of items in @targets.
+ *
+ * Gets the contents of @selection_data as an array of targets.
+ * This can be used to interpret the results of getting
+ * the standard TARGETS target that is always supplied for
+ * any selection.
+ *
+ * Return value: %TRUE if @selection_data contains a valid
+ * array of targets, otherwise %FALSE.
+ **/
+gboolean
+gtk_selection_data_get_targets (GtkSelectionData *selection_data,
+ GdkAtom **targets,
+ gint *n_atoms)
+{
+ if (selection_data->length >= 0 &&
+ selection_data->format == 32 &&
+ selection_data->type == GDK_SELECTION_TYPE_ATOM)
+ {
+ if (targets)
+ *targets = g_memdup (selection_data->data, selection_data->length);
+ if (n_atoms)
+ *n_atoms = selection_data->length / sizeof (GdkAtom);
+
+ return TRUE;
+ }
+ else
+ {
+ if (targets)
+ *targets = NULL;
+ if (n_atoms)
+ *n_atoms = -1;
+
+ return FALSE;
+ }
+}
+
+/**
+ * gtk_selection_data_targets_include_text:
+ * @selection_data: a #GtkSelectionData object
+ *
+ * Given a #GtkSelectionData object holding a list of targets,
+ * determines if any of the targets in @targets can be used to
+ * provide text.
+ *
+ * Return value: %TRUE if @selection_data holds a list of targets,
+ * and a suitable target for text is included, otherwise %FALSE.
+ **/
+gboolean
+gtk_selection_data_targets_include_text (GtkSelectionData *selection_data)
+{
+ GdkAtom *targets;
+ gint n_targets;
+ gint i;
+ gboolean result = FALSE;
+
+ if (gtk_selection_data_get_targets (selection_data, &targets, &n_targets))
+ {
+ for (i=0; i < n_targets; i++)
+ {
+ if (targets[i] == gdk_atom_intern ("STRING", FALSE) ||
+ targets[i] == gdk_atom_intern ("TEXT", FALSE) ||
+ targets[i] == gdk_atom_intern ("COMPOUND_TEXT", FALSE) ||
+ targets[i] == gdk_atom_intern ("UTF8_STRING", FALSE))
+ result = TRUE;
+ }
+
+ g_free (targets);
+ }
+
+ return result;
+}
+
/*************************************************************
* gtk_selection_init:
* Initialize local variables
gtk_selection_atoms[MULTIPLE] = gdk_atom_intern ("MULTIPLE", FALSE);
gtk_selection_atoms[TIMESTAMP] = gdk_atom_intern ("TIMESTAMP", FALSE);
gtk_selection_atoms[TARGETS] = gdk_atom_intern ("TARGETS", FALSE);
+
+ initialize = FALSE;
}
-/*************************************************************
+/**
* gtk_selection_clear:
- * Handler for "selection_clear_event"
- * arguments:
- * widget:
- * event:
- * results:
- *************************************************************/
-
-gint
-gtk_selection_clear (GtkWidget *widget,
+ * @widget: a #GtkWidget
+ * @event: the event
+ *
+ * The default handler for the GtkWidget::selection_clear_event
+ * signal.
+ *
+ * Return value: %TRUE if the event was handled, otherwise false
+ *
+ * Since: 2.2
+ *
+ * Deprecated: Instead of calling this function, chain up from
+ * your selection_clear_event handler. Calling this function
+ * from any other context is illegal.
+ **/
+gboolean
+gtk_selection_clear (GtkWidget *widget,
GdkEventSelection *event)
{
- /* FIXME: there can be a problem if we change the selection
- via gtk_selection_owner_set after another client claims
- the selection, but before we get the notification event.
- Tk filters based on serial #'s, which aren't retained by
- GTK. Filtering based on time's will be inherently
- somewhat unreliable. */
-
+ /* Note that we filter clear events in gdkselection-x11.c, so
+ * that we only will get here if the clear event actually
+ * represents a change that we didn't do ourself.
+ */
GList *tmp_list;
- GtkSelectionInfo *selection_info;
+ GtkSelectionInfo *selection_info = NULL;
tmp_list = current_selections;
while (tmp_list)
if (tmp_list)
{
- if (selection_info->time > event->time)
- return FALSE; /* return FALSE to indicate that
- * the selection was out of date,
- * and this clear should be ignored */
- else
- {
- current_selections = g_list_remove_link (current_selections, tmp_list);
- g_list_free (tmp_list);
- g_free (selection_info);
- }
+ current_selections = g_list_remove_link (current_selections, tmp_list);
+ g_list_free (tmp_list);
+ g_free (selection_info);
}
return TRUE;
/*************************************************************
- * gtk_selection_request:
+ * _gtk_selection_request:
* Handler for "selection_request_event"
* arguments:
* widget:
* results:
*************************************************************/
-gint
-gtk_selection_request (GtkWidget *widget,
- GdkEventSelection *event)
+gboolean
+_gtk_selection_request (GtkWidget *widget,
+ GdkEventSelection *event)
{
+ GdkDisplay *display = gtk_widget_get_display (widget);
GtkIncrInfo *info;
GList *tmp_list;
- guchar *mult_atoms;
int i;
-
+ gulong selection_max_size;
+
if (initialize)
gtk_selection_init ();
+ g_message ("max request sizes %ld %ld\n",
+ XMaxRequestSize(GDK_DISPLAY_XDISPLAY(display)),
+ XExtendedMaxRequestSize(GDK_DISPLAY_XDISPLAY(display)));
+ selection_max_size = GTK_SELECTION_MAX_SIZE (display);
+
/* Check if we own selection */
tmp_list = current_selections;
if (tmp_list == NULL)
return FALSE;
- info = g_new(GtkIncrInfo, 1);
+ info = g_new (GtkIncrInfo, 1);
+
+ g_object_ref (widget);
- info->widget = widget;
info->selection = event->selection;
info->num_incrs = 0;
/* Create GdkWindow structure for the requestor */
- info->requestor = gdk_window_lookup (event->requestor);
+ info->requestor = gdk_window_lookup_for_display (display,
+ event->requestor);
if (!info->requestor)
- info->requestor = gdk_window_foreign_new (event->requestor);
+ info->requestor = gdk_window_foreign_new_for_display (display,
+ event->requestor);
/* Determine conversions we need to perform */
if (event->target == gtk_selection_atoms[MULTIPLE])
{
GdkAtom type;
+ guchar *mult_atoms;
gint format;
gint length;
mult_atoms = NULL;
- if (!gdk_property_get (info->requestor, event->property, 0, /* AnyPropertyType */
- 0, GTK_SELECTION_MAX_SIZE, FALSE,
+
+ gdk_error_trap_push ();
+ if (!gdk_property_get (info->requestor, event->property, GDK_NONE, /* AnyPropertyType */
+ 0, selection_max_size, FALSE,
&type, &format, &length, &mult_atoms))
{
- gdk_selection_send_notify (event->requestor, event->selection,
- event->target, GDK_NONE, event->time);
+ gdk_selection_send_notify_for_display (display,
+ event->requestor,
+ event->selection,
+ event->target,
+ GDK_NONE,
+ event->time);
g_free (mult_atoms);
g_free (info);
return TRUE;
}
-
- info->num_conversions = length / (2*sizeof (GdkAtom));
- info->conversions = g_new (GtkIncrConversion, info->num_conversions);
-
- for (i=0; i<info->num_conversions; i++)
+ gdk_error_trap_pop ();
+
+ /* This is annoying; the ICCCM doesn't specify the property type
+ * used for the property contents, so the autoconversion for
+ * ATOM / ATOM_PAIR in GDK doesn't work properly.
+ */
+#ifdef GDK_WINDOWING_X11
+ if (type != GDK_SELECTION_TYPE_ATOM &&
+ type != gdk_atom_intern ("ATOM_PAIR", FALSE))
{
- info->conversions[i].target = ((GdkAtom *)mult_atoms)[2*i];
- info->conversions[i].property = ((GdkAtom *)mult_atoms)[2*i+1];
+ info->num_conversions = length / (2*sizeof (glong));
+ info->conversions = g_new (GtkIncrConversion, info->num_conversions);
+
+ for (i=0; i<info->num_conversions; i++)
+ {
+ info->conversions[i].target = gdk_x11_xatom_to_atom_for_display (display,
+ ((glong *)mult_atoms)[2*i]);
+ info->conversions[i].property = gdk_x11_xatom_to_atom_for_display (display,
+ ((glong *)mult_atoms)[2*i + 1]);
+ }
+ }
+ else
+#endif
+ {
+ info->num_conversions = length / (2*sizeof (GdkAtom));
+ info->conversions = g_new (GtkIncrConversion, info->num_conversions);
+
+ for (i=0; i<info->num_conversions; i++)
+ {
+ info->conversions[i].target = ((GdkAtom *)mult_atoms)[2*i];
+ info->conversions[i].property = ((GdkAtom *)mult_atoms)[2*i+1];
+ }
}
}
else /* only a single conversion */
info->num_conversions = 1;
info->conversions[0].target = event->target;
info->conversions[0].property = event->property;
- mult_atoms = (guchar *)info->conversions;
}
/* Loop through conversions and determine which of these are big
for (i=0; i<info->num_conversions; i++)
{
GtkSelectionData data;
- gint items;
+ glong items;
data.selection = event->selection;
data.target = info->conversions[i].target;
data.data = NULL;
data.length = -1;
+ data.display = gtk_widget_get_display (widget);
#ifdef DEBUG_SELECTION
g_message ("Selection %ld, target %ld (%s) requested by 0x%x (property = %ld)",
- event->selection, info->conversions[i].target,
- gdk_atom_name(info->conversions[i].target),
- event->requestor, event->property);
+ event->selection,
+ info->conversions[i].target,
+ gdk_atom_name (info->conversions[i].target),
+ event->requestor, info->conversions[i].property);
#endif
gtk_selection_invoke_handler (widget, &data, event->time);
if (data.length < 0)
{
- ((GdkAtom *)mult_atoms)[2*i+1] = GDK_NONE;
info->conversions[i].property = GDK_NONE;
continue;
}
g_return_val_if_fail ((data.format >= 8) && (data.format % 8 == 0), FALSE);
- items = (data.length + data.format/8 - 1) / (data.format/8);
+ items = data.length / gtk_selection_bytes_per_item (data.format);
- if (data.length > GTK_SELECTION_MAX_SIZE)
+ if (data.length > selection_max_size)
{
/* Sending via INCR */
+#ifdef DEBUG_SELECTION
+ g_message ("Target larger (%d) than max. request size (%ld), sending incrementally\n",
+ data.length, selection_max_size);
+#endif
info->conversions[i].offset = 0;
info->conversions[i].data = data;
gdk_property_change (info->requestor,
info->conversions[i].property,
gtk_selection_atoms[INCR],
- 8*sizeof (GdkAtom),
+ 32,
GDK_PROP_MODE_REPLACE,
(guchar *)&items, 1);
}
gdk_window_get_events (info->requestor) |
GDK_PROPERTY_CHANGE_MASK);
current_incrs = g_list_append (current_incrs, info);
- gtk_timeout_add (1000, (GtkFunction)gtk_selection_incr_timeout, info);
+ g_timeout_add (1000, (GSourceFunc) gtk_selection_incr_timeout, info);
}
/* If it was a MULTIPLE request, set the property to indicate which
conversions succeeded */
if (event->target == gtk_selection_atoms[MULTIPLE])
{
+ GdkAtom *mult_atoms = g_new (GdkAtom, 2 * info->num_conversions);
+ for (i = 0; i < info->num_conversions; i++)
+ {
+ mult_atoms[2*i] = info->conversions[i].target;
+ mult_atoms[2*i+1] = info->conversions[i].property;
+ }
+
gdk_property_change (info->requestor, event->property,
- GDK_SELECTION_TYPE_ATOM, 8*sizeof(GdkAtom),
+ gdk_atom_intern ("ATOM_PAIR", FALSE), 32,
GDK_PROP_MODE_REPLACE,
- mult_atoms, 2*info->num_conversions);
+ (guchar *)mult_atoms, 2*info->num_conversions);
g_free (mult_atoms);
}
-
- gdk_selection_send_notify (event->requestor, event->selection, event->target,
- event->property, event->time);
-
+
+ if (info->num_conversions == 1 &&
+ info->conversions[0].property == GDK_NONE)
+ {
+ /* Reject the entire conversion */
+ gdk_selection_send_notify_for_display (gtk_widget_get_display (widget),
+ event->requestor,
+ event->selection,
+ event->target,
+ GDK_NONE,
+ event->time);
+ }
+ else
+ {
+ gdk_selection_send_notify_for_display (gtk_widget_get_display (widget),
+ event->requestor,
+ event->selection,
+ event->target,
+ event->property,
+ event->time);
+ }
+
if (info->num_incrs == 0)
{
g_free (info->conversions);
g_free (info);
}
+
+ g_object_unref (widget);
return TRUE;
}
/*************************************************************
- * gtk_selection_incr_event:
+ * _gtk_selection_incr_event:
* Called whenever an PropertyNotify event occurs for an
* GdkWindow with user_data == NULL. These will be notifications
* that a window we are sending the selection to via the
* results:
*************************************************************/
-gint
-gtk_selection_incr_event (GdkWindow *window,
- GdkEventProperty *event)
+gboolean
+_gtk_selection_incr_event (GdkWindow *window,
+ GdkEventProperty *event)
{
GList *tmp_list;
- GtkIncrInfo *info;
+ GtkIncrInfo *info = NULL;
gint num_bytes;
guchar *buffer;
+ gulong selection_max_size;
int i;
#ifdef DEBUG_SELECTION
g_message ("PropertyDelete, property %ld", event->atom);
#endif
-
+
+ selection_max_size = GTK_SELECTION_MAX_SIZE (gdk_drawable_get_display (window));
+
/* Now find the appropriate ongoing INCR */
tmp_list = current_incrs;
while (tmp_list)
if (info->conversions[i].property == event->atom &&
info->conversions[i].offset != -1)
{
+ int bytes_per_item;
+
info->idle_time = 0;
if (info->conversions[i].offset == -2) /* only the last 0-length
buffer = info->conversions[i].data.data +
info->conversions[i].offset;
- if (num_bytes > GTK_SELECTION_MAX_SIZE)
+ if (num_bytes > selection_max_size)
{
- num_bytes = GTK_SELECTION_MAX_SIZE;
- info->conversions[i].offset += GTK_SELECTION_MAX_SIZE;
+ num_bytes = selection_max_size;
+ info->conversions[i].offset += selection_max_size;
}
else
info->conversions[i].offset = -2;
num_bytes, info->conversions[i].offset,
GDK_WINDOW_XWINDOW(info->requestor), event->atom);
#endif
+
+ bytes_per_item = gtk_selection_bytes_per_item (info->conversions[i].data.format);
gdk_property_change (info->requestor, event->atom,
info->conversions[i].data.type,
info->conversions[i].data.format,
GDK_PROP_MODE_REPLACE,
- buffer,
- (num_bytes + info->conversions[i].data.format/8 - 1) /
- (info->conversions[i].data.format/8));
+ buffer,
+ num_bytes / bytes_per_item);
if (info->conversions[i].offset == -2)
{
info->conversions[i].offset = -1;
}
}
- break;
}
/* Check if we're finished with all the targets */
}
/* If retrieval is finished */
- if (!tmp_list || info->idle_time >= 5)
+ if (!tmp_list || info->idle_time >= IDLE_ABORT_TIME)
{
- if (tmp_list && info->idle_time >= 5)
+ if (tmp_list && info->idle_time >= IDLE_ABORT_TIME)
{
current_incrs = g_list_remove_link (current_incrs, tmp_list);
g_list_free (tmp_list);
}
/*************************************************************
- * gtk_selection_notify:
+ * _gtk_selection_notify:
* Handler for "selection_notify_event" signals on windows
* where a retrieval is currently in process. The selection
* owner has responded to our conversion request.
* was event handled?
*************************************************************/
-gint
-gtk_selection_notify (GtkWidget *widget,
- GdkEventSelection *event)
+gboolean
+_gtk_selection_notify (GtkWidget *widget,
+ GdkEventSelection *event)
{
GList *tmp_list;
- GtkRetrievalInfo *info;
- guchar *buffer;
+ GtkRetrievalInfo *info = NULL;
+ guchar *buffer = NULL;
gint length;
GdkAtom type;
gint format;
if (!tmp_list) /* no retrieval in progress */
return FALSE;
+
+ if (event->property != GDK_NONE)
+ length = gdk_selection_property_get (widget->window, &buffer,
+ &type, &format);
+ else
+ length = 0; /* silence gcc */
- if (event->property == GDK_NONE)
+ if (event->property == GDK_NONE || buffer == NULL)
{
current_retrievals = g_list_remove_link (current_retrievals, tmp_list);
g_list_free (tmp_list);
return TRUE;
}
- length = gdk_selection_property_get (widget->window, &buffer,
- &type, &format);
-
if (type == gtk_selection_atoms[INCR])
{
/* The remainder of the selection will come through PropertyNotify
}
/*************************************************************
- * gtk_selection_property_notify:
+ * _gtk_selection_property_notify:
* Handler for "property_notify_event" signals on windows
* where a retrieval is currently in process. The selection
* owner has added more data.
* was event handled?
*************************************************************/
-gint
-gtk_selection_property_notify (GtkWidget *widget,
- GdkEventProperty *event)
+gboolean
+_gtk_selection_property_notify (GtkWidget *widget,
+ GdkEventProperty *event)
{
GList *tmp_list;
- GtkRetrievalInfo *info;
+ GtkRetrievalInfo *info = NULL;
guchar *new_buffer;
int length;
GdkAtom type;
gint format;
+ g_return_val_if_fail (widget != NULL, FALSE);
+ g_return_val_if_fail (event != NULL, FALSE);
+
+#if defined(GDK_WINDOWING_WIN32) || defined(GDK_WINDOWING_X11)
if ((event->state != GDK_PROPERTY_NEW_VALUE) || /* property was deleted */
- (event->atom != gdk_selection_property)) /* not the right property */
+ (event->atom != gdk_atom_intern ("GDK_SELECTION", FALSE))) /* not the right property */
+#endif
return FALSE;
#ifdef DEBUG_SELECTION
}
/* If retrieval is finished */
- if (!tmp_list || info->idle_time >= 5)
+ if (!tmp_list || info->idle_time >= IDLE_ABORT_TIME)
{
- if (tmp_list && info->idle_time >= 5)
+ if (tmp_list && info->idle_time >= IDLE_ABORT_TIME)
{
current_retrievals = g_list_remove_link (current_retrievals, tmp_list);
g_list_free (tmp_list);
data.length = length;
data.data = buffer;
+ data.display = gtk_widget_get_display (info->widget);
- gtk_signal_emit_by_name (GTK_OBJECT(info->widget),
- "selection_received",
- &data, time);
+ g_signal_emit_by_name (info->widget,
+ "selection_received",
+ &data, time);
}
/*************************************************************
if (target_list &&
gtk_target_list_find (target_list, data->target, &info))
{
- gtk_signal_emit_by_name (GTK_OBJECT (widget),
- "selection_get",
- data,
- info, time);
+ g_signal_emit_by_name (widget,
+ "selection_get",
+ data,
+ info, time);
}
else
gtk_selection_default_handler (widget, data);
if ((selection_info->widget == widget) &&
(selection_info->selection == data->selection))
{
+ gulong time = selection_info->time;
+
gtk_selection_data_set (data,
GDK_SELECTION_TYPE_INTEGER,
- sizeof (guint32)*8,
- (guchar *)&selection_info->time,
- sizeof (guint32));
+ 32,
+ (guchar *)&time,
+ sizeof (time));
return;
}
{
/* List of all targets supported for this widget/selection pair */
GdkAtom *p;
- gint count;
+ guint count;
GList *tmp_list;
GtkTargetList *target_list;
GtkTargetPair *pair;
- count = 3;
target_list = gtk_selection_target_list_get (widget,
data->selection);
- tmp_list = target_list->list;
- while (tmp_list)
- {
- count++;
- tmp_list = tmp_list->next;
- }
+ count = g_list_length (target_list->list) + 3;
data->type = GDK_SELECTION_TYPE_ATOM;
- data->format = 8*sizeof (GdkAtom);
- data->length = count*sizeof (GdkAtom);
-
- p = g_new (GdkAtom, count);
+ data->format = 32;
+ data->length = count * sizeof (GdkAtom);
+
+ /* selection data is always terminated by a trailing \0
+ */
+ p = g_malloc (data->length + 1);
data->data = (guchar *)p;
+ data->data[data->length] = '\0';
*p++ = gtk_selection_atoms[TIMESTAMP];
*p++ = gtk_selection_atoms[TARGETS];
}
-GtkSelectioData*
-gtk_selection_data_copy (GtkSelectionData *data)
+GtkSelectionData*
+gtk_selection_data_copy (GtkSelectionData *selection_data)
{
GtkSelectionData *new_data;
- g_return_val_if_fail (data != NULL, NULL);
+ g_return_val_if_fail (selection_data != NULL, NULL);
new_data = g_new (GtkSelectionData, 1);
- *new_data = *data;
+ *new_data = *selection_data;
+
+ if (selection_data->data)
+ {
+ new_data->data = g_malloc (selection_data->length + 1);
+ memcpy (new_data->data, selection_data->data, selection_data->length + 1);
+ }
return new_data;
}
{
g_return_if_fail (data != NULL);
+ if (data->data)
+ g_free (data->data);
+
g_free (data);
}
+
+GType
+gtk_selection_data_get_type (void)
+{
+ static GType our_type = 0;
+
+ if (our_type == 0)
+ our_type = g_boxed_type_register_static ("GtkSelectionData",
+ (GBoxedCopyFunc) gtk_selection_data_copy,
+ (GBoxedFreeFunc) gtk_selection_data_free);
+
+ return our_type;
+}
+
+static int
+gtk_selection_bytes_per_item (gint format)
+{
+ switch (format)
+ {
+ case 8:
+ return sizeof (char);
+ break;
+ case 16:
+ return sizeof (short);
+ break;
+ case 32:
+ return sizeof (long);
+ break;
+ default:
+ g_assert_not_reached();
+ }
+ return 0;
+}
projects / ~andy / gtk / blobdiff