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gtk/gtk/gtkaccellabel.c
Michael Natterer 17fed85c24 add new boolean settings gtk-enable-accels and gtk-enable-mnemonics which 
2007-02-05  Michael Natterer  <mitch@imendio.com>

	* gtk/gtksettings.c: add new boolean settings gtk-enable-accels
	and gtk-enable-mnemonics which enable/disable accelerators and
	mnemonics (bug #72375, based on a patch from Tommi Komulainen).

	* gtk/gtkwindow.c (gtk_window_activate_key)
	* gtk/gtkmenushell.c (gtk_menu_shell_key_press): don't invoke them
	if the resp. setting is FALSE.

	* gtk/gtkaccellabel.c (gtk_accel_label_refetch)
	* gtk/gtklabel.c (gtk_label_set_pattern_internal): don't display
	them if the setting is FALSE.

	* gtk/gtklabel.c: added signal connection to the screen's settings
	object and traverse all widgets on the screen when the setting
	changes. It's slightly ugly to also update GtkAccelLabels here,
	but less ugly than connecting and traversing all widgets twice.


svn path=/trunk/; revision=17262
2007-02-05 14:11:39 +00:00

711 lines
21 KiB
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/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* GtkAccelLabel: GtkLabel with accelerator monitoring facilities.
* Copyright (C) 1998 Tim Janik
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-2001. 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 <string.h>
#include "gtkaccellabel.h"
#include "gtkaccelmap.h"
#include "gtkmain.h"
#include "gtkprivate.h"
#include "gtkintl.h"
#include "gtkalias.h"
enum {
PROP_0,
PROP_ACCEL_CLOSURE,
PROP_ACCEL_WIDGET
};
static void gtk_accel_label_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_accel_label_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void gtk_accel_label_destroy (GtkObject *object);
static void gtk_accel_label_finalize (GObject *object);
static void gtk_accel_label_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static gboolean gtk_accel_label_expose_event (GtkWidget *widget,
GdkEventExpose *event);
static const gchar *gtk_accel_label_get_string (GtkAccelLabel *accel_label);
G_DEFINE_TYPE (GtkAccelLabel, gtk_accel_label, GTK_TYPE_LABEL)
static void
gtk_accel_label_class_init (GtkAccelLabelClass *class)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (class);
GtkObjectClass *object_class = GTK_OBJECT_CLASS (class);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
gobject_class->finalize = gtk_accel_label_finalize;
gobject_class->set_property = gtk_accel_label_set_property;
gobject_class->get_property = gtk_accel_label_get_property;
object_class->destroy = gtk_accel_label_destroy;
widget_class->size_request = gtk_accel_label_size_request;
widget_class->expose_event = gtk_accel_label_expose_event;
class->signal_quote1 = g_strdup ("<:");
class->signal_quote2 = g_strdup (":>");
/* This is the text that should appear next to menu accelerators
* that use the shift key. If the text on this key isn't typically
* translated on keyboards used for your language, don't translate
* this.
*
* Don't include the prefix "keyboard label|" in the translation.
*/
class->mod_name_shift = g_strdup (Q_("keyboard label|Shift"));
/* This is the text that should appear next to menu accelerators
* that use the control key. If the text on this key isn't typically
* translated on keyboards used for your language, don't translate
* this.
*
* Don't include the prefix "keyboard label|" in the translation.
*/
class->mod_name_control = g_strdup (Q_("keyboard label|Ctrl"));
/* This is the text that should appear next to menu accelerators
* that use the alt key. If the text on this key isn't typically
* translated on keyboards used for your language, don't translate
* this.
*
* Don't include the prefix "keyboard label|" in the translation.
*/
class->mod_name_alt = g_strdup (Q_("keyboard label|Alt"));
class->mod_separator = g_strdup ("+");
class->accel_seperator = g_strdup (" / ");
class->latin1_to_char = TRUE;
g_object_class_install_property (gobject_class,
PROP_ACCEL_CLOSURE,
g_param_spec_boxed ("accel-closure",
P_("Accelerator Closure"),
P_("The closure to be monitored for accelerator changes"),
G_TYPE_CLOSURE,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_ACCEL_WIDGET,
g_param_spec_object ("accel-widget",
P_("Accelerator Widget"),
P_("The widget to be monitored for accelerator changes"),
GTK_TYPE_WIDGET,
GTK_PARAM_READWRITE));
}
static void
gtk_accel_label_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkAccelLabel *accel_label;
accel_label = GTK_ACCEL_LABEL (object);
switch (prop_id)
{
case PROP_ACCEL_CLOSURE:
gtk_accel_label_set_accel_closure (accel_label, g_value_get_boxed (value));
break;
case PROP_ACCEL_WIDGET:
gtk_accel_label_set_accel_widget (accel_label, g_value_get_object (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_accel_label_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkAccelLabel *accel_label;
accel_label = GTK_ACCEL_LABEL (object);
switch (prop_id)
{
case PROP_ACCEL_CLOSURE:
g_value_set_boxed (value, accel_label->accel_closure);
break;
case PROP_ACCEL_WIDGET:
g_value_set_object (value, accel_label->accel_widget);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_accel_label_init (GtkAccelLabel *accel_label)
{
accel_label->accel_padding = 3;
accel_label->accel_widget = NULL;
accel_label->accel_closure = NULL;
accel_label->accel_group = NULL;
accel_label->accel_string = NULL;
}
GtkWidget*
gtk_accel_label_new (const gchar *string)
{
GtkAccelLabel *accel_label;
g_return_val_if_fail (string != NULL, NULL);
accel_label = g_object_new (GTK_TYPE_ACCEL_LABEL, NULL);
gtk_label_set_text (GTK_LABEL (accel_label), string);
return GTK_WIDGET (accel_label);
}
static void
gtk_accel_label_destroy (GtkObject *object)
{
GtkAccelLabel *accel_label = GTK_ACCEL_LABEL (object);
gtk_accel_label_set_accel_widget (accel_label, NULL);
gtk_accel_label_set_accel_closure (accel_label, NULL);
GTK_OBJECT_CLASS (gtk_accel_label_parent_class)->destroy (object);
}
static void
gtk_accel_label_finalize (GObject *object)
{
GtkAccelLabel *accel_label = GTK_ACCEL_LABEL (object);
g_free (accel_label->accel_string);
G_OBJECT_CLASS (gtk_accel_label_parent_class)->finalize (object);
}
/**
* gtk_accel_label_get_accel_widget:
* @accel_label: a #GtkAccelLabel
*
* Fetches the widget monitored by this accelerator label. See
* gtk_accel_label_set_accel_widget().
*
* Return value: the object monitored by the accelerator label,
* or %NULL.
**/
GtkWidget*
gtk_accel_label_get_accel_widget (GtkAccelLabel *accel_label)
{
g_return_val_if_fail (GTK_IS_ACCEL_LABEL (accel_label), NULL);
return accel_label->accel_widget;
}
guint
gtk_accel_label_get_accel_width (GtkAccelLabel *accel_label)
{
g_return_val_if_fail (GTK_IS_ACCEL_LABEL (accel_label), 0);
return (accel_label->accel_string_width +
(accel_label->accel_string_width ? accel_label->accel_padding : 0));
}
static void
gtk_accel_label_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkAccelLabel *accel_label = GTK_ACCEL_LABEL (widget);
PangoLayout *layout;
gint width;
if (GTK_WIDGET_CLASS (gtk_accel_label_parent_class)->size_request)
GTK_WIDGET_CLASS (gtk_accel_label_parent_class)->size_request (widget, requisition);
layout = gtk_widget_create_pango_layout (widget, gtk_accel_label_get_string (accel_label));
pango_layout_get_pixel_size (layout, &width, NULL);
accel_label->accel_string_width = width;
g_object_unref (layout);
}
static gint
get_first_baseline (PangoLayout *layout)
{
PangoLayoutIter *iter;
gint result;
iter = pango_layout_get_iter (layout);
result = pango_layout_iter_get_baseline (iter);
pango_layout_iter_free (iter);
return PANGO_PIXELS (result);
}
static gboolean
gtk_accel_label_expose_event (GtkWidget *widget,
GdkEventExpose *event)
{
GtkAccelLabel *accel_label = GTK_ACCEL_LABEL (widget);
GtkMisc *misc = GTK_MISC (accel_label);
GtkTextDirection direction;
direction = gtk_widget_get_direction (widget);
if (GTK_WIDGET_DRAWABLE (accel_label))
{
guint ac_width;
ac_width = gtk_accel_label_get_accel_width (accel_label);
if (widget->allocation.width >= widget->requisition.width + ac_width)
{
PangoLayout *label_layout;
PangoLayout *accel_layout;
GtkLabel *label = GTK_LABEL (widget);
gint x;
gint y;
label_layout = gtk_label_get_layout (GTK_LABEL (accel_label));
if (direction == GTK_TEXT_DIR_RTL)
widget->allocation.x += ac_width;
widget->allocation.width -= ac_width;
if (gtk_label_get_ellipsize (label))
pango_layout_set_width (label_layout,
pango_layout_get_width (label_layout)
- ac_width * PANGO_SCALE);
if (GTK_WIDGET_CLASS (gtk_accel_label_parent_class)->expose_event)
GTK_WIDGET_CLASS (gtk_accel_label_parent_class)->expose_event (widget, event);
if (direction == GTK_TEXT_DIR_RTL)
widget->allocation.x -= ac_width;
widget->allocation.width += ac_width;
if (gtk_label_get_ellipsize (label))
pango_layout_set_width (label_layout,
pango_layout_get_width (label_layout)
+ ac_width * PANGO_SCALE);
if (direction == GTK_TEXT_DIR_RTL)
x = widget->allocation.x + misc->xpad;
else
x = widget->allocation.x + widget->allocation.width - misc->xpad - ac_width;
gtk_label_get_layout_offsets (GTK_LABEL (accel_label), NULL, &y);
accel_layout = gtk_widget_create_pango_layout (widget, gtk_accel_label_get_string (accel_label));
y += get_first_baseline (label_layout) - get_first_baseline (accel_layout);
gtk_paint_layout (widget->style,
widget->window,
GTK_WIDGET_STATE (widget),
FALSE,
&event->area,
widget,
"accellabel",
x, y,
accel_layout);
g_object_unref (accel_layout);
}
else
{
if (GTK_WIDGET_CLASS (gtk_accel_label_parent_class)->expose_event)
GTK_WIDGET_CLASS (gtk_accel_label_parent_class)->expose_event (widget, event);
}
}
return FALSE;
}
static void
refetch_widget_accel_closure (GtkAccelLabel *accel_label)
{
GClosure *closure = NULL;
GList *clist, *list;
g_return_if_fail (GTK_IS_ACCEL_LABEL (accel_label));
g_return_if_fail (GTK_IS_WIDGET (accel_label->accel_widget));
clist = gtk_widget_list_accel_closures (accel_label->accel_widget);
for (list = clist; list; list = list->next)
{
/* we just take the first closure used */
closure = list->data;
break;
}
g_list_free (clist);
gtk_accel_label_set_accel_closure (accel_label, closure);
}
/**
* gtk_accel_label_set_accel_widget:
* @accel_label: a #GtkAccelLabel
* @accel_widget: the widget to be monitored.
*
* Sets the widget to be monitored by this accelerator label.
**/
void
gtk_accel_label_set_accel_widget (GtkAccelLabel *accel_label,
GtkWidget *accel_widget)
{
g_return_if_fail (GTK_IS_ACCEL_LABEL (accel_label));
if (accel_widget)
g_return_if_fail (GTK_IS_WIDGET (accel_widget));
if (accel_widget != accel_label->accel_widget)
{
if (accel_label->accel_widget)
{
gtk_accel_label_set_accel_closure (accel_label, NULL);
g_signal_handlers_disconnect_by_func (accel_label->accel_widget,
refetch_widget_accel_closure,
accel_label);
g_object_unref (accel_label->accel_widget);
}
accel_label->accel_widget = accel_widget;
if (accel_label->accel_widget)
{
g_object_ref (accel_label->accel_widget);
g_signal_connect_object (accel_label->accel_widget, "accel_closures_changed",
G_CALLBACK (refetch_widget_accel_closure),
accel_label, G_CONNECT_SWAPPED);
refetch_widget_accel_closure (accel_label);
}
g_object_notify (G_OBJECT (accel_label), "accel-widget");
}
}
static void
gtk_accel_label_reset (GtkAccelLabel *accel_label)
{
if (accel_label->accel_string)
{
g_free (accel_label->accel_string);
accel_label->accel_string = NULL;
}
gtk_widget_queue_resize (GTK_WIDGET (accel_label));
}
static void
check_accel_changed (GtkAccelGroup *accel_group,
guint keyval,
GdkModifierType modifier,
GClosure *accel_closure,
GtkAccelLabel *accel_label)
{
if (accel_closure == accel_label->accel_closure)
gtk_accel_label_reset (accel_label);
}
/**
* gtk_accel_label_set_accel_closure:
* @accel_label: a #GtkAccelLabel
* @accel_closure: the closure to monitor for accelerator changes.
*
* Sets the closure to be monitored by this accelerator label. The closure
* must be connected to an accelerator group; see gtk_accel_group_connect().
**/
void
gtk_accel_label_set_accel_closure (GtkAccelLabel *accel_label,
GClosure *accel_closure)
{
g_return_if_fail (GTK_IS_ACCEL_LABEL (accel_label));
if (accel_closure)
g_return_if_fail (gtk_accel_group_from_accel_closure (accel_closure) != NULL);
if (accel_closure != accel_label->accel_closure)
{
if (accel_label->accel_closure)
{
g_signal_handlers_disconnect_by_func (accel_label->accel_group,
check_accel_changed,
accel_label);
accel_label->accel_group = NULL;
g_closure_unref (accel_label->accel_closure);
}
accel_label->accel_closure = accel_closure;
if (accel_label->accel_closure)
{
g_closure_ref (accel_label->accel_closure);
accel_label->accel_group = gtk_accel_group_from_accel_closure (accel_closure);
g_signal_connect_object (accel_label->accel_group, "accel_changed",
G_CALLBACK (check_accel_changed),
accel_label, 0);
}
gtk_accel_label_reset (accel_label);
g_object_notify (G_OBJECT (accel_label), "accel-closure");
}
}
static gboolean
find_accel (GtkAccelKey *key,
GClosure *closure,
gpointer data)
{
return data == (gpointer) closure;
}
static const gchar *
gtk_accel_label_get_string (GtkAccelLabel *accel_label)
{
if (!accel_label->accel_string)
gtk_accel_label_refetch (accel_label);
return accel_label->accel_string;
}
/* Underscores in key names are better displayed as spaces
* E.g., Page_Up should be "Page Up"
*/
static void
substitute_underscores (char *str)
{
char *p;
for (p = str; *p; p++)
if (*p == '_')
*p = ' ';
}
gchar *
_gtk_accel_label_class_get_accelerator_label (GtkAccelLabelClass *klass,
guint accelerator_key,
GdkModifierType accelerator_mods)
{
GString *gstring;
gboolean seen_mod = FALSE;
gunichar ch;
gstring = g_string_new ("");
if (accelerator_mods & GDK_SHIFT_MASK)
{
g_string_append (gstring, klass->mod_name_shift);
seen_mod = TRUE;
}
if (accelerator_mods & GDK_CONTROL_MASK)
{
if (seen_mod)
g_string_append (gstring, klass->mod_separator);
g_string_append (gstring, klass->mod_name_control);
seen_mod = TRUE;
}
if (accelerator_mods & GDK_MOD1_MASK)
{
if (seen_mod)
g_string_append (gstring, klass->mod_separator);
g_string_append (gstring, klass->mod_name_alt);
seen_mod = TRUE;
}
if (accelerator_mods & GDK_MOD2_MASK)
{
if (seen_mod)
g_string_append (gstring, klass->mod_separator);
g_string_append (gstring, "Mod2");
seen_mod = TRUE;
}
if (accelerator_mods & GDK_MOD3_MASK)
{
if (seen_mod)
g_string_append (gstring, klass->mod_separator);
g_string_append (gstring, "Mod3");
seen_mod = TRUE;
}
if (accelerator_mods & GDK_MOD4_MASK)
{
if (seen_mod)
g_string_append (gstring, klass->mod_separator);
g_string_append (gstring, "Mod4");
seen_mod = TRUE;
}
if (accelerator_mods & GDK_MOD5_MASK)
{
if (seen_mod)
g_string_append (gstring, klass->mod_separator);
g_string_append (gstring, "Mod5");
seen_mod = TRUE;
}
if (accelerator_mods & GDK_SUPER_MASK)
{
if (seen_mod)
g_string_append (gstring, klass->mod_separator);
/* This is the text that should appear next to menu accelerators
* that use the super key. If the text on this key isn't typically
* translated on keyboards used for your language, don't translate
* this.
* And do not translate the part before the |.
*/
g_string_append (gstring, Q_("keyboard label|Super"));
seen_mod = TRUE;
}
if (accelerator_mods & GDK_HYPER_MASK)
{
if (seen_mod)
g_string_append (gstring, klass->mod_separator);
/* This is the text that should appear next to menu accelerators
* that use the hyper key. If the text on this key isn't typically
* translated on keyboards used for your language, don't translate
* this.
* And do not translate the part before the |.
*/
g_string_append (gstring, Q_("keyboard label|Hyper"));
seen_mod = TRUE;
}
if (accelerator_mods & GDK_META_MASK)
{
if (seen_mod)
g_string_append (gstring, klass->mod_separator);
/* This is the text that should appear next to menu accelerators
* that use the meta key. If the text on this key isn't typically
* translated on keyboards used for your language, don't translate
* this.
* And do not translate the part before the |.
*/
g_string_append (gstring, Q_("keyboard label|Meta"));
seen_mod = TRUE;
}
if (seen_mod)
g_string_append (gstring, klass->mod_separator);
ch = gdk_keyval_to_unicode (accelerator_key);
if (ch && (g_unichar_isgraph (ch) || ch == ' ') &&
(ch < 0x80 || klass->latin1_to_char))
{
switch (ch)
{
case ' ':
/* do not translate the part before the | */
g_string_append (gstring, Q_("keyboard label|Space"));
break;
case '\\':
/* do not translate the part before the | */
g_string_append (gstring, Q_("keyboard label|Backslash"));
break;
default:
g_string_append_unichar (gstring, g_unichar_toupper (ch));
break;
}
}
else
{
gchar *tmp;
tmp = gdk_keyval_name (gdk_keyval_to_lower (accelerator_key));
if (tmp != NULL)
{
if (tmp[0] != 0 && tmp[1] == 0)
g_string_append_c (gstring, g_ascii_toupper (tmp[0]));
else
{
gchar msg[128];
gchar *str;
strcpy (msg, "keyboard label|");
g_strlcat (msg, tmp, 128);
str = dgettext (GETTEXT_PACKAGE, msg);
if (str == msg)
{
g_string_append (gstring, tmp);
substitute_underscores (gstring->str);
}
else
g_string_append (gstring, str);
}
}
}
return g_string_free (gstring, FALSE);
}
gboolean
gtk_accel_label_refetch (GtkAccelLabel *accel_label)
{
gboolean enable_accels;
g_return_val_if_fail (GTK_IS_ACCEL_LABEL (accel_label), FALSE);
if (accel_label->accel_string)
{
g_free (accel_label->accel_string);
accel_label->accel_string = NULL;
}
g_object_get (gtk_widget_get_settings (GTK_WIDGET (accel_label)),
"gtk-enable-accels", &enable_accels,
NULL);
if (enable_accels && accel_label->accel_closure)
{
GtkAccelKey *key = gtk_accel_group_find (accel_label->accel_group, find_accel, accel_label->accel_closure);
if (key && key->accel_flags & GTK_ACCEL_VISIBLE)
{
GtkAccelLabelClass *klass;
gchar *tmp;
klass = GTK_ACCEL_LABEL_GET_CLASS (accel_label);
tmp = _gtk_accel_label_class_get_accelerator_label (klass,
key->accel_key,
key->accel_mods);
accel_label->accel_string = g_strconcat (" ", tmp, NULL);
g_free (tmp);
}
if (!accel_label->accel_string)
accel_label->accel_string = g_strdup ("-/-");
}
if (!accel_label->accel_string)
accel_label->accel_string = g_strdup ("");
gtk_widget_queue_resize (GTK_WIDGET (accel_label));
return FALSE;
}
#define __GTK_ACCEL_LABEL_C__
#include "gtkaliasdef.c"
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