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dropdown: Add a checkmark to the selected item

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Make the default factory add a checkmark to the
currently selected item (not the hovered item)
in the popup. This will unfortunately have to be
done in non-default factories too.

Related: #3291
This commit is contained in:
Matthias Clasen 2020-10-27 12:17:37 -04:00
parent 3a119a3d3a
commit 25d2efeabe
1 changed files with 53 additions and 2 deletions
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55
gtk/gtkdropdown.c
View File

@ -44,6 +44,7 @@
#include "gtkbuildable.h"
#include "gtkbuilderprivate.h"
#include "gtkstringlist.h"
#include "gtkbox.h"
/**
* SECTION:gtkdropdown
@ -537,11 +538,34 @@ setup_item (GtkSignalListItemFactory *factory,
GtkListItem *list_item,
gpointer data)
{
GtkWidget *box;
GtkWidget *label;
GtkWidget *icon;
box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
label = gtk_label_new (NULL);
gtk_label_set_xalign (GTK_LABEL (label), 0.0);
gtk_list_item_set_child (list_item, label);
gtk_box_append (GTK_BOX (box), label);
icon = gtk_image_new_from_icon_name ("object-select-symbolic");
gtk_box_append (GTK_BOX (box), icon);
gtk_list_item_set_child (list_item, box);
}
static void
selected_item_changed (GtkDropDown *self,
GParamSpec *pspec,
GtkListItem *list_item)
{
GtkWidget *box;
GtkWidget *icon;
box = gtk_list_item_get_child (list_item);
icon = gtk_widget_get_last_child (box);
if (gtk_drop_down_get_selected_item (self) == gtk_list_item_get_item (list_item))
gtk_widget_set_opacity (icon, 1.0);
else
gtk_widget_set_opacity (icon, 0.0);
}
static void
@ -551,11 +575,15 @@ bind_item (GtkSignalListItemFactory *factory,
{
GtkDropDown *self = data;
gpointer item;
GtkWidget *box;
GtkWidget *label;
GtkWidget *icon;
GValue value = G_VALUE_INIT;
item = gtk_list_item_get_item (list_item);
label = gtk_list_item_get_child (list_item);
box = gtk_list_item_get_child (list_item);
label = gtk_widget_get_first_child (box);
icon = gtk_widget_get_last_child (box);
if (self->expression &&
gtk_expression_evaluate (self->expression, item, &value))
@ -574,6 +602,28 @@ bind_item (GtkSignalListItemFactory *factory,
{
g_critical ("Either GtkDropDown:factory or GtkDropDown:expression must be set");
}
if (gtk_widget_get_ancestor (box, GTK_TYPE_POPOVER) == self->popup)
{
gtk_widget_show (icon);
g_signal_connect (self, "notify::selected-item",
G_CALLBACK (selected_item_changed), list_item);
selected_item_changed (self, NULL, list_item);
}
else
{
gtk_widget_hide (icon);
}
}
static void
unbind_item (GtkSignalListItemFactory *factory,
GtkListItem *list_item,
gpointer data)
{
GtkDropDown *self = data;
g_signal_handlers_disconnect_by_func (self, selected_item_changed, list_item);
}
static void
@ -585,6 +635,7 @@ set_default_factory (GtkDropDown *self)
g_signal_connect (factory, "setup", G_CALLBACK (setup_item), self);
g_signal_connect (factory, "bind", G_CALLBACK (bind_item), self);
g_signal_connect (factory, "unbind", G_CALLBACK (unbind_item), self);
gtk_drop_down_set_factory (self, factory);