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gtk2/gtk/gtkaccellabel.c
Timm Bäder 9992a616ef widget: Use ::measure vfunc to measure size 
Add a new ::measure vfunc similar to GtkCssGadget's that widget
implementations have to override instead of the old get_preferred_width,
get_preferred_height, get_preferred_width_for_height,
get_preferred_height_for_width and
get_preferred_height_and_baseline_for_width.
2016-10-22 19:05:47 +02:00

1067 lines
33 KiB
C
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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 "gtkintl.h"
#include "gtkmain.h"
#include "gtkprivate.h"
#include "gtkrender.h"
#include "gtksizerequest.h"
#include "gtkstylecontextprivate.h"
#include "gtkwidgetprivate.h"
#include "gtkcssnodeprivate.h"
#include "gtkcssstylepropertyprivate.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 typically not set explicitly (although it
* can be, with gtk_accel_label_set_accel()). 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.
*
* ## Creating a simple menu item with an accelerator key.
*
* |[<!-- language="C" -->
* 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);
* ]|
*
* # CSS nodes
*
* |[<!-- language="plain" -->
* label
* ╰── accelerator
* ]|
*
* Like #GtkLabel, GtkAccelLabel has a main CSS node with the name label.
* It adds a subnode with name accelerator.
*/
enum {
PROP_0,
PROP_ACCEL_CLOSURE,
PROP_ACCEL_WIDGET,
LAST_PROP
};
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 */
GtkCssNode *accel_node;
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;
};
GParamSpec *props[LAST_PROP] = { NULL, };
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 GskRenderNode *gtk_accel_label_get_render_node (GtkWidget *widget,
GskRenderer *renderer);
static const gchar *gtk_accel_label_get_string (GtkAccelLabel *accel_label);
static void gtk_accel_label_measure (GtkWidget *widget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline);
G_DEFINE_TYPE_WITH_PRIVATE (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->get_render_node = gtk_accel_label_get_render_node;
widget_class->measure = gtk_accel_label_measure;
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 */
props[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_PARAM_EXPLICIT_NOTIFY);
props[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_PARAM_EXPLICIT_NOTIFY);
g_object_class_install_properties (gobject_class, LAST_PROP, props);
}
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
node_style_changed_cb (GtkCssNode *node,
GtkCssStyleChange *change,
GtkWidget *widget)
{
if (gtk_css_style_change_affects (change, GTK_CSS_AFFECTS_SIZE | GTK_CSS_AFFECTS_CLIP))
gtk_widget_queue_resize (widget);
else
gtk_widget_queue_draw (widget);
}
static void
gtk_accel_label_init (GtkAccelLabel *accel_label)
{
GtkAccelLabelPrivate *priv;
GtkCssNode *widget_node;
accel_label->priv = gtk_accel_label_get_instance_private (accel_label);
priv = accel_label->priv;
priv->accel_padding = 3;
priv->accel_widget = NULL;
priv->accel_closure = NULL;
priv->accel_group = NULL;
priv->accel_string = NULL;
widget_node = gtk_widget_get_css_node (GTK_WIDGET (accel_label));
priv->accel_node = gtk_css_node_new ();
gtk_css_node_set_name (priv->accel_node, I_("accelerator"));
gtk_css_node_set_parent (priv->accel_node, widget_node);
gtk_css_node_set_state (priv->accel_node, gtk_css_node_get_state (widget_node));
g_signal_connect_object (priv->accel_node, "style-changed", G_CALLBACK (node_style_changed_cb), accel_label, 0);
g_object_unref (priv->accel_node);
}
/**
* 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: (nullable) (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 PangoLayout *
gtk_accel_label_get_accel_layout (GtkAccelLabel *accel_label)
{
GtkWidget *widget = GTK_WIDGET (accel_label);
GtkStyleContext *context;
PangoAttrList *attrs;
PangoLayout *layout;
PangoFontDescription *font_desc;
context = gtk_widget_get_style_context (widget);
gtk_style_context_save_to_node (context, accel_label->priv->accel_node);
layout = gtk_widget_create_pango_layout (widget, gtk_accel_label_get_string (accel_label));
attrs = _gtk_style_context_get_pango_attributes (context);
if (!attrs)
attrs = pango_attr_list_new ();
gtk_style_context_get (context,
"font", &font_desc,
NULL);
pango_attr_list_change (attrs, pango_attr_font_desc_new (font_desc));
pango_font_description_free (font_desc);
pango_layout_set_attributes (layout, attrs);
pango_attr_list_unref (attrs);
gtk_style_context_restore (context);
return layout;
}
static void
gtk_accel_label_measure (GtkWidget *widget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline)
{
GtkAccelLabel *accel_label = GTK_ACCEL_LABEL (widget);
GTK_WIDGET_CLASS (gtk_accel_label_parent_class)->measure (widget,
orientation,
for_size,
minimum, natural,
minimum_baseline, natural_baseline);
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
PangoLayout *layout;
int width;
layout = gtk_accel_label_get_accel_layout (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 GskRenderNode *
gtk_accel_label_get_render_node (GtkWidget *widget,
GskRenderer *renderer)
{
GtkAccelLabel *accel_label = GTK_ACCEL_LABEL (widget);
guint ac_width;
GtkAllocation allocation;
GtkRequisition requisition;
GskRenderNode *res;
res = GTK_WIDGET_CLASS (gtk_accel_label_parent_class)->get_render_node (widget, renderer);
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;
gint x;
gint y;
GtkAllocation alloc, clip;
GskRenderNode *node;
cairo_t *cr;
node = gtk_widget_create_render_node (widget, renderer, "AccelLabel Content");
gtk_widget_get_clip (widget, &clip);
_gtk_widget_get_allocation (widget, &alloc);
cr = gsk_render_node_get_draw_context (node);
cairo_translate (cr, alloc.x - clip.x, alloc.y - clip.y);
context = gtk_widget_get_style_context (widget);
label_layout = gtk_label_get_layout (GTK_LABEL (accel_label));
accel_layout = gtk_accel_label_get_accel_layout (accel_label);
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
x = 0;
else
x = gtk_widget_get_allocated_width (widget) - ac_width;
gtk_label_get_layout_offsets (GTK_LABEL (accel_label), NULL, &y);
y += get_first_baseline (label_layout) - get_first_baseline (accel_layout) - allocation.y;
gtk_style_context_save_to_node (context, accel_label->priv->accel_node);
gtk_render_layout (context, cr, x, y, accel_layout);
gtk_style_context_restore (context);
g_object_unref (accel_layout);
cairo_destroy (cr);
gsk_render_node_append_child (res, node);
gsk_render_node_unref (node);
}
return res;
}
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_by_pspec (G_OBJECT (accel_label), props[PROP_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_by_pspec (G_OBJECT (accel_label), props[PROP_ACCEL_WIDGET]);
}
}
static void
gtk_accel_label_reset (GtkAccelLabel *accel_label)
{
g_clear_pointer (&accel_label->priv->accel_string, g_free);
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_by_pspec (G_OBJECT (accel_label), props[PROP_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;
}
ch = gdk_keyval_to_unicode (accelerator_key);
if (ch && ch < 0x80 && (g_unichar_isgraph (ch) || ch == ' '))
{
if (seen_mod)
g_string_append (gstring, klass->mod_separator);
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 (seen_mod)
g_string_append (gstring, klass->mod_separator);
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);
g_clear_pointer (&accel_label->priv->accel_string, g_free);
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))
{
gboolean have_accel = FALSE;
guint accel_key;
GdkModifierType accel_mods;
/* First check for a manual accel set with _set_accel() */
if (accel_label->priv->accel_key)
{
accel_mods = accel_label->priv->accel_mods;
accel_key = accel_label->priv->accel_key;
have_accel = TRUE;
}
/* If we don't have a hardcoded value, check the accel group */
if (!have_accel)
{
GtkAccelKey *key;
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;
have_accel = TRUE;
}
}
/* If we found a key using either method, set it */
if (have_accel)
{
GtkAccelLabelClass *klass;
klass = GTK_ACCEL_LABEL_GET_CLASS (accel_label);
accel_label->priv->accel_string =
_gtk_accel_label_class_get_accelerator_label (klass, accel_key, accel_mods);
}
else
/* Otherwise we have a closure with no key. Show "-/-". */
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)
{
g_return_if_fail (GTK_IS_ACCEL_LABEL (accel_label));
accel_label->priv->accel_key = accelerator_key;
accel_label->priv->accel_mods = accelerator_mods;
gtk_accel_label_reset (accel_label);
}
/**
* gtk_accel_label_get_accel:
* @accel_label: a #GtkAccelLabel
* @accelerator_key: (out): return location for the keyval
* @accelerator_mods: (out): return location for the modifier mask
*
* Gets the keyval and modifier mask set with
* gtk_accel_label_set_accel().
*
* Since: 3.12
*/
void
gtk_accel_label_get_accel (GtkAccelLabel *accel_label,
guint *accelerator_key,
GdkModifierType *accelerator_mods)
{
g_return_if_fail (GTK_IS_ACCEL_LABEL (accel_label));
*accelerator_key = accel_label->priv->accel_key;
*accelerator_mods = accel_label->priv->accel_mods;
}
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