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gtk2/gtk/gtkaccellabel.c
Ryan Lortie 778aa7ade0 GtkAccelLabel: add manual accel API 
Add an API to GtkAccelLabel for hardcoding the accel key to be displayed
(ie: allowing us to bypass the GtkAccelGroup lookup).

Use that from the GMenuModel-based GtkMenu construction code instead of
passing around the accel group.

This makes accel labels work in bloatpad again.

This patch effectively removes any hope of automatic runtime accel
changes in GMenuModel-based menus without additional application
support but it leaves the door open for this to be supported again in
the future (if we decide that it's important).

https://bugzilla.gnome.org/show_bug.cgi?id=683738
2012-09-17 12:31:22 -04:00

975 lines
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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, see <http://www.gnu.org/licenses/>.
*/
/*
* 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 "gtksizerequest.h"
#include "gtkprivate.h"
#include "gtkintl.h"
/**
* SECTION:gtkaccellabel
* @Short_description: A label which displays an accelerator key on the right of the text
* @Title: GtkAccelLabel
* @See_also: #GtkAccelGroup
*
* The #GtkAccelLabel widget is a subclass of #GtkLabel that also displays an
* accelerator key on the right of the label text, e.g. 'Ctl+S'.
* It is commonly used in menus to show the keyboard short-cuts for commands.
*
* The accelerator key to display is not set explicitly.
* Instead, the #GtkAccelLabel displays the accelerators which have been added to
* a particular widget. This widget is set by calling
* gtk_accel_label_set_accel_widget().
*
* For example, a #GtkMenuItem widget may have an accelerator added to emit the
* "activate" signal when the 'Ctl+S' key combination is pressed.
* A #GtkAccelLabel is created and added to the #GtkMenuItem, and
* gtk_accel_label_set_accel_widget() is called with the #GtkMenuItem as the
* second argument. The #GtkAccelLabel will now display 'Ctl+S' after its label.
*
* Note that creating a #GtkMenuItem with gtk_menu_item_new_with_label() (or
* one of the similar functions for #GtkCheckMenuItem and #GtkRadioMenuItem)
* automatically adds a #GtkAccelLabel to the #GtkMenuItem and calls
* gtk_accel_label_set_accel_widget() to set it up for you.
*
* A #GtkAccelLabel will only display accelerators which have %GTK_ACCEL_VISIBLE
* set (see #GtkAccelFlags).
* A #GtkAccelLabel can display multiple accelerators and even signal names,
* though it is almost always used to display just one accelerator key.
* <example>
* <title>Creating a simple menu item with an accelerator key.</title>
* <programlisting>
* GtkWidget *save_item;
* GtkAccelGroup *accel_group;
*
* /<!---->* Create a GtkAccelGroup and add it to the window. *<!---->/
* accel_group = gtk_accel_group_new (<!-- -->);
* gtk_window_add_accel_group (GTK_WINDOW (window), accel_group);
*
* /<!---->* Create the menu item using the convenience function. *<!---->/
* save_item = gtk_menu_item_new_with_label ("Save");
* gtk_widget_show (save_item);
* gtk_container_add (GTK_CONTAINER (menu), save_item);
*
* /<!---->* Now add the accelerator to the GtkMenuItem. Note that since we called
* gtk_menu_item_new_with_label(<!-- -->) to create the GtkMenuItem the
* GtkAccelLabel is automatically set up to display the GtkMenuItem
* accelerators. We just need to make sure we use GTK_ACCEL_VISIBLE here. *<!---->/
* gtk_widget_add_accelerator (save_item, "activate", accel_group,
* GDK_KEY_s, GDK_CONTROL_MASK, GTK_ACCEL_VISIBLE);
* </programlisting>
* </example>
*/
enum {
PROP_0,
PROP_ACCEL_CLOSURE,
PROP_ACCEL_WIDGET
};
struct _GtkAccelLabelPrivate
{
GtkWidget *accel_widget; /* done */
GClosure *accel_closure; /* has set function */
GtkAccelGroup *accel_group; /* set by set_accel_closure() */
gchar *accel_string; /* has set function */
guint accel_padding; /* should be style property? */
guint16 accel_string_width; /* seems to be private */
guint accel_key; /* manual accel key specification if != 0 */
GdkModifierType accel_mods;
};
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 (GtkWidget *widget);
static void gtk_accel_label_finalize (GObject *object);
static gboolean gtk_accel_label_draw (GtkWidget *widget,
cairo_t *cr);
static const gchar *gtk_accel_label_get_string (GtkAccelLabel *accel_label);
static void gtk_accel_label_get_preferred_width (GtkWidget *widget,
gint *min_width,
gint *nat_width);
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);
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;
widget_class->draw = gtk_accel_label_draw;
widget_class->get_preferred_width = gtk_accel_label_get_preferred_width;
widget_class->destroy = gtk_accel_label_destroy;
gtk_widget_class_set_accessible_role (widget_class, ATK_ROLE_ACCEL_LABEL);
class->signal_quote1 = g_strdup ("<:");
class->signal_quote2 = g_strdup (":>");
#ifndef GDK_WINDOWING_QUARTZ
/* 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.
*/
class->mod_name_shift = g_strdup (C_("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.
*/
class->mod_name_control = g_strdup (C_("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.
*/
class->mod_name_alt = g_strdup (C_("keyboard label", "Alt"));
class->mod_separator = g_strdup ("+");
#else /* GDK_WINDOWING_QUARTZ */
/* U+21E7 UPWARDS WHITE ARROW */
class->mod_name_shift = g_strdup ("\xe2\x87\xa7");
/* U+2303 UP ARROWHEAD */
class->mod_name_control = g_strdup ("\xe2\x8c\x83");
/* U+2325 OPTION KEY */
class->mod_name_alt = g_strdup ("\xe2\x8c\xa5");
class->mod_separator = g_strdup ("");
#endif /* GDK_WINDOWING_QUARTZ */
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));
g_type_class_add_private (gobject_class, sizeof (GtkAccelLabelPrivate));
}
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->priv->accel_closure);
break;
case PROP_ACCEL_WIDGET:
g_value_set_object (value, accel_label->priv->accel_widget);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_accel_label_init (GtkAccelLabel *accel_label)
{
GtkAccelLabelPrivate *priv;
accel_label->priv = G_TYPE_INSTANCE_GET_PRIVATE (accel_label,
GTK_TYPE_ACCEL_LABEL,
GtkAccelLabelPrivate);
priv = accel_label->priv;
priv->accel_padding = 3;
priv->accel_widget = NULL;
priv->accel_closure = NULL;
priv->accel_group = NULL;
priv->accel_string = NULL;
}
/**
* gtk_accel_label_new:
* @string: the label string. Must be non-%NULL.
*
* Creates a new #GtkAccelLabel.
*
* Returns: a new #GtkAccelLabel.
*/
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 (GtkWidget *widget)
{
GtkAccelLabel *accel_label = GTK_ACCEL_LABEL (widget);
gtk_accel_label_set_accel_widget (accel_label, NULL);
gtk_accel_label_set_accel_closure (accel_label, NULL);
GTK_WIDGET_CLASS (gtk_accel_label_parent_class)->destroy (widget);
}
static void
gtk_accel_label_finalize (GObject *object)
{
GtkAccelLabel *accel_label = GTK_ACCEL_LABEL (object);
g_free (accel_label->priv->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().
*
* Returns: (transfer none): 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->priv->accel_widget;
}
/**
* gtk_accel_label_get_accel_width:
* @accel_label: a #GtkAccelLabel.
*
* Returns the width needed to display the accelerator key(s).
* This is used by menus to align all of the #GtkMenuItem widgets, and shouldn't
* be needed by applications.
*
* Returns: the width needed to display the accelerator key(s).
*/
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->priv->accel_string_width +
(accel_label->priv->accel_string_width ? accel_label->priv->accel_padding : 0));
}
static void
gtk_accel_label_get_preferred_width (GtkWidget *widget,
gint *min_width,
gint *nat_width)
{
GtkAccelLabel *accel_label = GTK_ACCEL_LABEL (widget);
PangoLayout *layout;
gint width;
GTK_WIDGET_CLASS (gtk_accel_label_parent_class)->get_preferred_width (widget, min_width, nat_width);
layout = gtk_widget_create_pango_layout (GTK_WIDGET (widget),
gtk_accel_label_get_string (accel_label));
pango_layout_get_pixel_size (layout, &width, NULL);
accel_label->priv->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_draw (GtkWidget *widget,
cairo_t *cr)
{
GtkAccelLabel *accel_label = GTK_ACCEL_LABEL (widget);
GtkMisc *misc = GTK_MISC (accel_label);
GtkTextDirection direction;
guint ac_width;
GtkAllocation allocation;
GtkRequisition requisition;
direction = gtk_widget_get_direction (widget);
ac_width = gtk_accel_label_get_accel_width (accel_label);
gtk_widget_get_allocation (widget, &allocation);
gtk_widget_get_preferred_size (widget, NULL, &requisition);
if (allocation.width >= requisition.width + ac_width)
{
GtkStyleContext *context;
PangoLayout *label_layout;
PangoLayout *accel_layout;
GtkLabel *label = GTK_LABEL (widget);
gint x;
gint y;
gint xpad;
context = gtk_widget_get_style_context (widget);
label_layout = gtk_label_get_layout (GTK_LABEL (accel_label));
cairo_save (cr);
/* XXX: Mad hack: We modify the label's width so it renders
* properly in its draw function that we chain to. */
if (direction == GTK_TEXT_DIR_RTL)
cairo_translate (cr, ac_width, 0);
if (gtk_label_get_ellipsize (label))
pango_layout_set_width (label_layout,
pango_layout_get_width (label_layout)
- ac_width * PANGO_SCALE);
allocation.width -= ac_width;
gtk_widget_set_allocation (widget, &allocation);
if (GTK_WIDGET_CLASS (gtk_accel_label_parent_class)->draw)
GTK_WIDGET_CLASS (gtk_accel_label_parent_class)->draw (widget,
cr);
allocation.width += ac_width;
gtk_widget_set_allocation (widget, &allocation);
if (gtk_label_get_ellipsize (label))
pango_layout_set_width (label_layout,
pango_layout_get_width (label_layout)
+ ac_width * PANGO_SCALE);
cairo_restore (cr);
gtk_misc_get_padding (misc, &xpad, NULL);
if (direction == GTK_TEXT_DIR_RTL)
x = xpad;
else
x = gtk_widget_get_allocated_width (widget) - 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) - allocation.y;
gtk_style_context_save (context);
gtk_style_context_add_class (context, GTK_STYLE_CLASS_ACCELERATOR);
gtk_render_layout (context, cr, x, y, accel_layout);
gtk_style_context_restore (context);
g_object_unref (accel_layout);
}
else
{
if (GTK_WIDGET_CLASS (gtk_accel_label_parent_class)->draw)
GTK_WIDGET_CLASS (gtk_accel_label_parent_class)->draw (widget, cr);
}
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->priv->accel_widget));
clist = gtk_widget_list_accel_closures (accel_label->priv->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);
}
static void
accel_widget_weak_ref_cb (GtkAccelLabel *accel_label,
GtkWidget *old_accel_widget)
{
g_return_if_fail (GTK_IS_ACCEL_LABEL (accel_label));
g_return_if_fail (GTK_IS_WIDGET (accel_label->priv->accel_widget));
g_signal_handlers_disconnect_by_func (accel_label->priv->accel_widget,
refetch_widget_accel_closure,
accel_label);
accel_label->priv->accel_widget = NULL;
g_object_notify (G_OBJECT (accel_label), "accel-widget");
}
/**
* 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->priv->accel_widget)
{
if (accel_label->priv->accel_widget)
{
gtk_accel_label_set_accel_closure (accel_label, NULL);
g_signal_handlers_disconnect_by_func (accel_label->priv->accel_widget,
refetch_widget_accel_closure,
accel_label);
g_object_weak_unref (G_OBJECT (accel_label->priv->accel_widget),
(GWeakNotify) accel_widget_weak_ref_cb, accel_label);
}
accel_label->priv->accel_widget = accel_widget;
if (accel_label->priv->accel_widget)
{
g_object_weak_ref (G_OBJECT (accel_label->priv->accel_widget),
(GWeakNotify) accel_widget_weak_ref_cb, accel_label);
g_signal_connect_object (accel_label->priv->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->priv->accel_string)
{
g_free (accel_label->priv->accel_string);
accel_label->priv->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->priv->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->priv->accel_closure)
{
if (accel_label->priv->accel_closure)
{
g_signal_handlers_disconnect_by_func (accel_label->priv->accel_group,
check_accel_changed,
accel_label);
accel_label->priv->accel_group = NULL;
g_closure_unref (accel_label->priv->accel_closure);
}
accel_label->priv->accel_closure = accel_closure;
if (accel_label->priv->accel_closure)
{
g_closure_ref (accel_label->priv->accel_closure);
accel_label->priv->accel_group = gtk_accel_group_from_accel_closure (accel_closure);
g_signal_connect_object (accel_label->priv->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->priv->accel_string)
gtk_accel_label_refetch (accel_label);
return accel_label->priv->accel_string;
}
/* Underscores in key names are better displayed as spaces
* E.g., Page_Up should be "Page Up".
*
* Some keynames also have prefixes that are not suitable
* for display, e.g XF86AudioMute, so strip those out, too.
*
* This function is only called on untranslated keynames,
* so no need to be UTF-8 safe.
*/
static void
append_without_underscores (GString *s,
gchar *str)
{
gchar *p;
if (g_str_has_prefix (str, "XF86"))
p = str + 4;
else if (g_str_has_prefix (str, "ISO_"))
p = str + 4;
else
p = str;
for ( ; *p; p++)
{
if (*p == '_')
g_string_append_c (s, ' ');
else
g_string_append_c (s, *p);
}
}
/* On Mac, if the key has symbolic representation (e.g. arrow keys),
* append it to gstring and return TRUE; otherwise return FALSE.
* See http://docs.info.apple.com/article.html?path=Mac/10.5/en/cdb_symbs.html
* for the list of special keys. */
static gboolean
append_keyval_symbol (guint accelerator_key,
GString *gstring)
{
#ifdef GDK_WINDOWING_QUARTZ
switch (accelerator_key)
{
case GDK_KEY_Return:
/* U+21A9 LEFTWARDS ARROW WITH HOOK */
g_string_append (gstring, "\xe2\x86\xa9");
return TRUE;
case GDK_KEY_ISO_Enter:
/* U+2324 UP ARROWHEAD BETWEEN TWO HORIZONTAL BARS */
g_string_append (gstring, "\xe2\x8c\xa4");
return TRUE;
case GDK_KEY_Left:
/* U+2190 LEFTWARDS ARROW */
g_string_append (gstring, "\xe2\x86\x90");
return TRUE;
case GDK_KEY_Up:
/* U+2191 UPWARDS ARROW */
g_string_append (gstring, "\xe2\x86\x91");
return TRUE;
case GDK_KEY_Right:
/* U+2192 RIGHTWARDS ARROW */
g_string_append (gstring, "\xe2\x86\x92");
return TRUE;
case GDK_KEY_Down:
/* U+2193 DOWNWARDS ARROW */
g_string_append (gstring, "\xe2\x86\x93");
return TRUE;
case GDK_KEY_Page_Up:
/* U+21DE UPWARDS ARROW WITH DOUBLE STROKE */
g_string_append (gstring, "\xe2\x87\x9e");
return TRUE;
case GDK_KEY_Page_Down:
/* U+21DF DOWNWARDS ARROW WITH DOUBLE STROKE */
g_string_append (gstring, "\xe2\x87\x9f");
return TRUE;
case GDK_KEY_Home:
/* U+2196 NORTH WEST ARROW */
g_string_append (gstring, "\xe2\x86\x96");
return TRUE;
case GDK_KEY_End:
/* U+2198 SOUTH EAST ARROW */
g_string_append (gstring, "\xe2\x86\x98");
return TRUE;
case GDK_KEY_Escape:
/* U+238B BROKEN CIRCLE WITH NORTHWEST ARROW */
g_string_append (gstring, "\xe2\x8e\x8b");
return TRUE;
case GDK_KEY_BackSpace:
/* U+232B ERASE TO THE LEFT */
g_string_append (gstring, "\xe2\x8c\xab");
return TRUE;
case GDK_KEY_Delete:
/* U+2326 ERASE TO THE RIGHT */
g_string_append (gstring, "\xe2\x8c\xa6");
return TRUE;
default:
return FALSE;
}
#else /* !GDK_WINDOWING_QUARTZ */
return FALSE;
#endif
}
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.
*/
g_string_append (gstring, C_("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.
*/
g_string_append (gstring, C_("keyboard label", "Hyper"));
seen_mod = TRUE;
}
if (accelerator_mods & GDK_META_MASK)
{
if (seen_mod)
g_string_append (gstring, klass->mod_separator);
#ifndef GDK_WINDOWING_QUARTZ
/* 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.
*/
g_string_append (gstring, C_("keyboard label", "Meta"));
#else
/* Command key symbol U+2318 PLACE OF INTEREST SIGN */
g_string_append (gstring, "\xe2\x8c\x98");
#endif
seen_mod = TRUE;
}
if (seen_mod)
g_string_append (gstring, klass->mod_separator);
ch = gdk_keyval_to_unicode (accelerator_key);
if (ch && ch < 0x80 && (g_unichar_isgraph (ch) || ch == ' '))
{
switch (ch)
{
case ' ':
g_string_append (gstring, C_("keyboard label", "Space"));
break;
case '\\':
g_string_append (gstring, C_("keyboard label", "Backslash"));
break;
default:
g_string_append_unichar (gstring, g_unichar_toupper (ch));
break;
}
}
else if (!append_keyval_symbol (accelerator_key, gstring))
{
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
{
const gchar *str;
str = g_dpgettext2 (GETTEXT_PACKAGE, "keyboard label", tmp);
if (str == tmp)
append_without_underscores (gstring, tmp);
else
g_string_append (gstring, str);
}
}
}
return g_string_free (gstring, FALSE);
}
/**
* gtk_accel_label_refetch:
* @accel_label: a #GtkAccelLabel.
*
* Recreates the string representing the accelerator keys.
* This should not be needed since the string is automatically updated whenever
* accelerators are added or removed from the associated widget.
*
* Returns: always returns %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->priv->accel_string)
{
g_free (accel_label->priv->accel_string);
accel_label->priv->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->priv->accel_closure || accel_label->priv->accel_key))
{
guint accel_key = accel_label->priv->accel_key;
GdkModifierType accel_mods = accel_label->priv->accel_mods;
/* If we don't have a hardcoded value, check the accel group */
if (!accel_key)
{
GtkAccelKey *key = gtk_accel_group_find (accel_label->priv->accel_group, find_accel, accel_label->priv->accel_closure);
if (key && key->accel_flags & GTK_ACCEL_VISIBLE)
{
accel_key = key->accel_key;
accel_mods = key->accel_mods;
}
}
/* If we found a key using either method, set it */
if (accel_key)
{
GtkAccelLabelClass *klass;
gchar *tmp;
klass = GTK_ACCEL_LABEL_GET_CLASS (accel_label);
tmp = _gtk_accel_label_class_get_accelerator_label (klass, accel_key, accel_mods);
accel_label->priv->accel_string = g_strconcat (" ", tmp, NULL);
g_free (tmp);
}
if (!accel_label->priv->accel_string)
accel_label->priv->accel_string = g_strdup ("-/-");
}
if (!accel_label->priv->accel_string)
accel_label->priv->accel_string = g_strdup ("");
gtk_widget_queue_resize (GTK_WIDGET (accel_label));
return FALSE;
}
/**
* gtk_accel_label_set_accel:
* @accel_label: a #GtkAccelLabel
* @accelerator_key: a keyval, or 0
* @accelerator_mods: the modifier mask for the accel
*
* Manually sets a keyval and modifier mask as the accelerator rendered
* by @accel_label.
*
* If a keyval and modifier are explicitly set then these values are
* used regardless of any associated accel closure or widget.
*
* Providing an @accelerator_key of 0 removes the manual setting.
*
* Since: 3.6
*/
void
gtk_accel_label_set_accel (GtkAccelLabel *accel_label,
guint accelerator_key,
GdkModifierType accelerator_mods)
{
accel_label->priv->accel_key = accelerator_key;
accel_label->priv->accel_mods = accelerator_mods;
gtk_accel_label_reset (accel_label);
}
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