* 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.
to the TARGETS request, though I don't really think so ... */
/*
- * Modified by the GTK+ Team and others 1997-1999. See the AUTHORS
+ * 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 <stdarg.h>
#include <string.h>
-#include "gdkx.h" /* For gdk_window_lookup() */
+#include "gdk.h"
+
#include "gtkmain.h"
#include "gtkselection.h"
#include "gtksignal.h"
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;
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;
* results:
*************************************************************/
-gint
+gboolean
gtk_selection_owner_set (GtkWidget *widget,
GdkAtom selection,
guint32 time)
GtkWidget *old_owner;
GtkSelectionInfo *selection_info = NULL;
GdkWindow *window;
+
+ g_return_val_if_fail (widget == NULL || GTK_WIDGET_REALIZED (widget), 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))
{
old_owner = NULL;
selection_info->selection = selection;
selection_info->widget = widget;
selection_info->time = time;
- current_selections = g_list_append (current_selections,
- selection_info);
+ current_selections = g_list_prepend (current_selections,
+ selection_info);
}
else
{
}
}
/* 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;
gtk_object_set_data (GTK_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;
+
+ lists = gtk_object_get_data (GTK_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;
+ }
+
+ gtk_object_set_data (GTK_OBJECT (widget), gtk_selection_handler_key, lists);
+}
+
void
gtk_selection_add_target (GtkWidget *widget,
GdkAtom 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)
{
* this widget).
*************************************************************/
-gint
+gboolean
gtk_selection_convert (GtkWidget *widget,
GdkAtom selection,
GdkAtom target,
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);
+ }
+}
+
+/**
+ * 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)
+{
+ gboolean result = FALSE;
+
+ 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);
+ result = TRUE;
+ }
+ else if (selection_data->target == GDK_TARGET_STRING)
+ {
+ 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);
+
+ result = TRUE;
+ }
+
+ }
+ else if (selection_data->target == ctext_atom ||
+ selection_data->target == text_atom)
+ {
+ gchar *tmp;
+ guchar *text;
+ GdkAtom encoding;
+ gint format;
+ gint new_length;
+
+ tmp = g_strndup (str, len);
+ if (gdk_utf8_to_compound_text (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_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 (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
* results:
*************************************************************/
-gint
-gtk_selection_clear (GtkWidget *widget,
+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 = NULL;
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;
* results:
*************************************************************/
-gint
+gboolean
gtk_selection_request (GtkWidget *widget,
GdkEventSelection *event)
{
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);
if (!info->requestor)
info->requestor = gdk_window_foreign_new (event->requestor);
gint length;
mult_atoms = NULL;
+
+ gdk_error_trap_push ();
if (!gdk_property_get (info->requestor, event->property, 0, /* AnyPropertyType */
0, GTK_SELECTION_MAX_SIZE, FALSE,
&type, &format, &length, &mult_atoms))
g_free (info);
return TRUE;
}
+ gdk_error_trap_pop ();
info->num_conversions = length / (2*sizeof (GdkAtom));
info->conversions = g_new (GtkIncrConversion, info->num_conversions);
for (i=0; i<info->num_conversions; i++)
{
GtkSelectionData data;
- gint items;
+ glong items;
data.selection = event->selection;
data.target = info->conversions[i].target;
#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),
+ gdk_atom_name (info->conversions[i].target),
event->requestor, event->property);
#endif
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)
{
gdk_property_change (info->requestor,
info->conversions[i].property,
gtk_selection_atoms[INCR],
- 8*sizeof (GdkAtom),
+ 32,
GDK_PROP_MODE_REPLACE,
(guchar *)&items, 1);
}
if (event->target == gtk_selection_atoms[MULTIPLE])
{
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);
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 (event->requestor, event->selection,
+ event->target, GDK_NONE, event->time);
+ }
+ else
+ {
+ gdk_selection_send_notify (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;
}
* results:
*************************************************************/
-gint
+gboolean
gtk_selection_incr_event (GdkWindow *window,
GdkEventProperty *event)
{
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
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)
{
* was event handled?
*************************************************************/
-gint
+gboolean
gtk_selection_notify (GtkWidget *widget,
GdkEventSelection *event)
{
GList *tmp_list;
GtkRetrievalInfo *info = NULL;
- guchar *buffer;
+ 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
* was event handled?
*************************************************************/
-gint
+gboolean
gtk_selection_property_notify (GtkWidget *widget,
GdkEventProperty *event)
{
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 ((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;
}
count = g_list_length (target_list->list) + 3;
data->type = GDK_SELECTION_TYPE_ATOM;
- data->format = 8*sizeof (GdkAtom);
+ data->format = 32;
data->length = count * sizeof (GdkAtom);
p = g_new (GdkAtom, count);
}
-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 ("GtkTypeSelectionData",
+ (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