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menubutton: Support custom children

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Fixes https://gitlab.gnome.org/GNOME/gtk/-/issues/4205
This commit is contained in:
Alexander Mikhaylenko 2021-09-03 16:18:06 +05:00
parent e681fdd958
commit 8b48cf11f9
3 changed files with 175 additions and 9 deletions
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169
gtk/gtkmenubutton.c
View File

@ -66,8 +66,9 @@
* `GtkMenuButton` has a single CSS node with name `menubutton`
* which contains a `button` node with a `.toggle` style class.
*
* If the button contains only an icon or an arrow, it will have the
* `.image-button` style class, if it contains both, it will have the
* If the button contains an icon, it will have the `.image-button` style class,
* if it contains text, it will have `.text-button` style class. If an arrow is
* visible in addition to an icon, text or a custom child, it will also have
* `.arrow-button` style class.
*
* Inside the toggle button content, there is an `arrow` node for
@ -87,6 +88,7 @@
#include "config.h"
#include "gtkactionable.h"
#include "gtkbuildable.h"
#include "gtkbuiltiniconprivate.h"
#include "gtkintl.h"
#include "gtkimage.h"
@ -122,6 +124,7 @@ struct _GtkMenuButton
GtkWidget *label_widget;
GtkWidget *image_widget;
GtkWidget *arrow_widget;
GtkWidget *child;
GtkArrowType arrow_type;
gboolean always_show_arrow;
@ -147,6 +150,7 @@ enum
PROP_USE_UNDERLINE,
PROP_HAS_FRAME,
PROP_PRIMARY,
PROP_CHILD,
LAST_PROP
};
@ -158,7 +162,10 @@ enum {
static GParamSpec *menu_button_props[LAST_PROP];
static guint signals[LAST_SIGNAL] = { 0 };
G_DEFINE_TYPE (GtkMenuButton, gtk_menu_button, GTK_TYPE_WIDGET)
static void gtk_menu_button_buildable_iface_init (GtkBuildableIface *iface);
G_DEFINE_TYPE_WITH_CODE (GtkMenuButton, gtk_menu_button, GTK_TYPE_WIDGET,
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE, gtk_menu_button_buildable_iface_init))
static void gtk_menu_button_dispose (GObject *object);
@ -199,6 +206,9 @@ gtk_menu_button_set_property (GObject *object,
case PROP_PRIMARY:
gtk_menu_button_set_primary (self, g_value_get_boolean (value));
break;
case PROP_CHILD:
gtk_menu_button_set_child (self, g_value_get_object (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
@ -241,6 +251,9 @@ gtk_menu_button_get_property (GObject *object,
case PROP_PRIMARY:
g_value_set_boolean (value, gtk_menu_button_get_primary (GTK_MENU_BUTTON (object)));
break;
case PROP_CHILD:
g_value_set_object (value, gtk_menu_button_get_child (self));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
@ -444,14 +457,14 @@ gtk_menu_button_class_init (GtkMenuButtonClass *klass)
/**
* GtkMenuButton:always-show-arrow: (attributes org.gtk.Property.get=gtk_menu_button_get_always_show_arrow org.gtk.Property.set=gtk_menu_button_set_always_show_arrow)
*
* Whether to show a dropdown arrow even when using an icon.
* Whether to show a dropdown arrow even when using an icon or a custom child.
*
* Since: 4.4
*/
menu_button_props[PROP_ALWAYS_SHOW_ARROW] =
g_param_spec_boolean ("always-show-arrow",
P_("Always Show Arrow"),
P_("Whether to show a dropdown arrow even when using an icon"),
P_("Whether to show a dropdown arrow even when using an icon or a custom child"),
FALSE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
@ -507,6 +520,20 @@ gtk_menu_button_class_init (GtkMenuButtonClass *klass)
FALSE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkMenuButton:child: (attributes org.gtk.Property.get=gtk_menu_button_get_child org.gtk.Property.set=gtk_menu_button_set_child)
*
* The child widget.
*
* Since: 4.6
*/
menu_button_props[PROP_CHILD] =
g_param_spec_object ("child",
P_("Child"),
P_("The child widget"),
GTK_TYPE_WIDGET,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
g_object_class_install_properties (gobject_class, LAST_PROP, menu_button_props);
/**
@ -575,13 +602,22 @@ set_arrow_type (GtkWidget *arrow,
static void
update_style_classes (GtkMenuButton *menu_button)
{
if (menu_button->arrow_widget == gtk_button_get_child (GTK_BUTTON (menu_button->button)) ||
(menu_button->image_widget && !menu_button->always_show_arrow))
gboolean has_icon = menu_button->image_widget != NULL;
gboolean has_label = menu_button->label_widget != NULL;
gboolean has_only_arrow = menu_button->arrow_widget == gtk_button_get_child (GTK_BUTTON (menu_button->button));
gboolean has_arrow = gtk_widget_get_visible (menu_button->arrow_widget);
if (has_only_arrow || has_icon)
gtk_widget_add_css_class (menu_button->button, "image-button");
else
gtk_widget_remove_css_class (menu_button->button, "image-button");
if (menu_button->image_widget && menu_button->always_show_arrow)
if (has_label)
gtk_widget_add_css_class (menu_button->button, "text-button");
else
gtk_widget_remove_css_class (menu_button->button, "text-button");
if (has_arrow && !has_only_arrow)
gtk_widget_add_css_class (menu_button->button, "arrow-button");
else
gtk_widget_remove_css_class (menu_button->button, "arrow-button");
@ -635,6 +671,28 @@ gtk_menu_button_init (GtkMenuButton *self)
gtk_widget_add_css_class (GTK_WIDGET (self), "popup");
}
static GtkBuildableIface *parent_buildable_iface;
static void
gtk_menu_button_buildable_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const char *type)
{
if (GTK_IS_WIDGET (child))
gtk_menu_button_set_child (GTK_MENU_BUTTON (buildable), GTK_WIDGET (child));
else
parent_buildable_iface->add_child (buildable, builder, child, type);
}
static void
gtk_menu_button_buildable_iface_init (GtkBuildableIface *iface)
{
parent_buildable_iface = g_type_interface_peek_parent (iface);
iface->add_child = gtk_menu_button_buildable_add_child;
}
/**
* gtk_menu_button_new:
*
@ -932,6 +990,13 @@ gtk_menu_button_get_popover (GtkMenuButton *menu_button)
* @icon_name: the icon name
*
* Sets the name of an icon to show inside the menu button.
*
* Setting icon name resets [property@Gtk.MenuButton:label] and
* [property@Gtk.MenuButton:child].
*
* If [property@Gtk.MenuButton:always-show-arrow] is set to `TRUE` and
* [property@Gtk.MenuButton:direction] is not `GTK_ARROW_NONE`, a dropdown arrow
* will be shown next to the icon.
*/
void
gtk_menu_button_set_icon_name (GtkMenuButton *menu_button,
@ -946,6 +1011,9 @@ gtk_menu_button_set_icon_name (GtkMenuButton *menu_button,
if (gtk_menu_button_get_label (menu_button))
g_object_notify_by_pspec (G_OBJECT (menu_button), menu_button_props[PROP_LABEL]);
if (gtk_menu_button_get_child (menu_button))
g_object_notify_by_pspec (G_OBJECT (menu_button), menu_button_props[PROP_CHILD]);
box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
gtk_widget_set_halign (box, GTK_ALIGN_CENTER);
@ -963,6 +1031,7 @@ gtk_menu_button_set_icon_name (GtkMenuButton *menu_button,
gtk_button_set_child (GTK_BUTTON (menu_button->button), box);
menu_button->label_widget = NULL;
menu_button->child = NULL;
update_arrow (menu_button);
@ -995,7 +1064,8 @@ gtk_menu_button_get_icon_name (GtkMenuButton *menu_button)
* @menu_button: a `GtkMenuButton`
* @always_show_arrow: hether to show a dropdown arrow even when using an icon
*
* Sets whether to show a dropdown arrow even when using an icon.
* Sets whether to show a dropdown arrow even when using an icon or a custom
* child.
*
* Since: 4.4
*/
@ -1041,6 +1111,12 @@ gtk_menu_button_get_always_show_arrow (GtkMenuButton *menu_button)
* @label: the label
*
* Sets the label to show inside the menu button.
*
* Setting a label resets [property@Gtk.MenuButton:icon-name] and
* [property@Gtk.MenuButton:child].
*
* If [property@Gtk.MenuButton:direction] is not `GTK_ARROW_NONE`, a dropdown
* arrow will be shown next to the label.
*/
void
gtk_menu_button_set_label (GtkMenuButton *menu_button,
@ -1056,6 +1132,8 @@ gtk_menu_button_set_label (GtkMenuButton *menu_button,
if (gtk_menu_button_get_icon_name (menu_button))
g_object_notify_by_pspec (G_OBJECT (menu_button), menu_button_props[PROP_ICON_NAME]);
if (gtk_menu_button_get_child (menu_button))
g_object_notify_by_pspec (G_OBJECT (menu_button), menu_button_props[PROP_CHILD]);
box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
label_widget = gtk_label_new (label);
@ -1072,6 +1150,7 @@ gtk_menu_button_set_label (GtkMenuButton *menu_button,
menu_button->label_widget = label_widget;
menu_button->image_widget = NULL;
menu_button->child = NULL;
update_arrow (menu_button);
@ -1354,3 +1433,75 @@ gtk_menu_button_get_primary (GtkMenuButton *menu_button)
return menu_button->primary;
}
/**
* gtk_menu_button_set_child: (attributes org.gtk.Method.set_property=child)
* @menu_button: a `GtkMenuButton`
* @child: (nullable): the child widget
*
* Sets the child widget of @menu_button.
*
* Setting a child resets [property@Gtk.MenuButton:label] and
* [property@Gtk.MenuButton:icon-name].
*
* If [property@Gtk.MenuButton:always-show-arrow] is set to `TRUE` and
* [property@Gtk.MenuButton:direction] is not `GTK_ARROW_NONE`, a dropdown arrow
* will be shown next to the child.
*
* Since: 4.6
*/
void
gtk_menu_button_set_child (GtkMenuButton *menu_button,
GtkWidget *child)
{
GtkWidget *box, *arrow;
g_return_if_fail (GTK_IS_MENU_BUTTON (menu_button));
g_return_if_fail (child == NULL || GTK_IS_WIDGET (child));
g_object_freeze_notify (G_OBJECT (menu_button));
if (gtk_menu_button_get_label (menu_button))
g_object_notify_by_pspec (G_OBJECT (menu_button), menu_button_props[PROP_LABEL]);
if (gtk_menu_button_get_icon_name (menu_button))
g_object_notify_by_pspec (G_OBJECT (menu_button), menu_button_props[PROP_ICON_NAME]);
box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
gtk_widget_set_halign (box, GTK_ALIGN_CENTER);
arrow = gtk_builtin_icon_new ("arrow");
menu_button->arrow_widget = arrow;
gtk_box_append (GTK_BOX (box), child);
gtk_box_append (GTK_BOX (box), arrow);
gtk_button_set_child (GTK_BUTTON (menu_button->button), box);
menu_button->child = child;
menu_button->image_widget = NULL;
menu_button->label_widget = NULL;
update_arrow (menu_button);
g_object_notify_by_pspec (G_OBJECT (menu_button), menu_button_props[PROP_CHILD]);
g_object_thaw_notify (G_OBJECT (menu_button));
}
/**
* gtk_menu_button_get_child: (attributes org.gtk.Method.get_property=child)
* @menu_button: a `GtkMenuButton`
*
* Gets the child widget of @menu_button.
*
* Returns: (nullable) (transfer none): the child widget of @menu_button
*
* Since: 4.6
*/
GtkWidget *
gtk_menu_button_get_child (GtkMenuButton *menu_button)
{
g_return_val_if_fail (GTK_IS_MENU_BUTTON (menu_button), NULL);
return menu_button->child;
}

6
gtk/gtkmenubutton.h
View File

@ -121,6 +121,12 @@ void gtk_menu_button_set_primary (GtkMenuButton *menu_button,
GDK_AVAILABLE_IN_4_4
gboolean gtk_menu_button_get_primary (GtkMenuButton *menu_button);
GDK_AVAILABLE_IN_4_6
void gtk_menu_button_set_child (GtkMenuButton *menu_button,
GtkWidget *child);
GDK_AVAILABLE_IN_4_6
GtkWidget * gtk_menu_button_get_child (GtkMenuButton *menu_button);
G_END_DECLS
#endif /* __GTK_MENU_BUTTON_H__ */

9
gtk/theme/Default/_common.scss
View File

@ -566,6 +566,15 @@ button {
}
}
&.arrow-button {
padding-left: 10px;
padding-right: 10px;
> box {
border-spacing: 4px;
}
}
@at-root %button_basic_drop_active,
&:drop(active) {
color: $drop_target_color;