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df882a32794bfd49a2c4b038d801957617872c38
gtk3/gtk/gtkaccellabel.c
Matthias Clasen 113f364a37 More of the same
2006-05-14 04:25:34 +00:00

702 lines
20 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.
* And do not translate the part before the |.
*/
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.
* And do not translate the part before the |.
*/
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.
* And do not translate the part before the |.
*/
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)
{
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;
}
if (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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