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dragicon: Add GtkDragIcon::child

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This commit is contained in:
Benjamin Otte 2020-03-01 22:28:39 +01:00
parent 7cd728a0ea
commit 9efc4e6777
3 changed files with 88 additions and 52 deletions
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2
docs/reference/gtk/gtk4-sections.txt
View File

@ -6881,6 +6881,8 @@ gtk_drop_controller_motion_get_type
<FILE>gtkdragicon</FILE>
GtkDragIcon
gtk_drag_icon_new_for_drag
gtk_drag_icon_set_child
gtk_drag_icon_get_child
gtk_drag_icon_set_from_paintable
<SUBSECTION Standard>

131
gtk/gtkdragicon.c
View File

@ -51,7 +51,7 @@ struct _GtkDragIcon
GdkSurface *surface;
GskRenderer *renderer;
GtkWidget *widget;
GtkWidget *child;
};
struct _GtkDragIconClass
@ -60,9 +60,14 @@ struct _GtkDragIconClass
};
enum {
LAST_ARG = 1
PROP_0,
PROP_CHILD,
LAST_ARG
};
static GParamSpec *properties[LAST_ARG] = { NULL, };
static void gtk_drag_icon_root_init (GtkRootInterface *iface);
static void gtk_drag_icon_native_init (GtkNativeInterface *iface);
@ -214,8 +219,8 @@ gtk_drag_icon_map (GtkWidget *widget)
GTK_WIDGET_CLASS (gtk_drag_icon_parent_class)->map (widget);
if (icon->widget && gtk_widget_get_visible (icon->widget))
gtk_widget_map (icon->widget);
if (icon->child && gtk_widget_get_visible (icon->child))
gtk_widget_map (icon->child);
}
static void
@ -228,8 +233,8 @@ gtk_drag_icon_unmap (GtkWidget *widget)
if (icon->surface)
gdk_surface_hide (icon->surface);
if (icon->widget)
gtk_widget_unmap (icon->widget);
if (icon->child)
gtk_widget_unmap (icon->child);
}
static void
@ -243,8 +248,8 @@ gtk_drag_icon_measure (GtkWidget *widget,
{
GtkDragIcon *icon = GTK_DRAG_ICON (widget);
if (icon->widget)
gtk_widget_measure (icon->widget,
if (icon->child)
gtk_widget_measure (icon->child,
orientation, for_size,
minimum, natural,
minimum_baseline, natural_baseline);
@ -258,8 +263,8 @@ gtk_drag_icon_size_allocate (GtkWidget *widget,
{
GtkDragIcon *icon = GTK_DRAG_ICON (widget);
if (icon->widget)
gtk_widget_allocate (icon->widget, width, height, baseline, NULL);
if (icon->child)
gtk_widget_allocate (icon->child, width, height, baseline, NULL);
}
static void
@ -284,7 +289,7 @@ gtk_drag_icon_dispose (GObject *object)
{
GtkDragIcon *icon = GTK_DRAG_ICON (object);
g_clear_pointer (&icon->widget, gtk_widget_unparent);
g_clear_pointer (&icon->child, gtk_widget_unparent);
G_OBJECT_CLASS (gtk_drag_icon_parent_class)->dispose (object);
@ -297,11 +302,18 @@ gtk_drag_icon_get_property (GObject *object,
GValue *value,
GParamSpec *pspec)
{
GtkDragIcon *self = GTK_DRAG_ICON (object);
switch (prop_id)
{
case PROP_CHILD:
g_value_set_object (value, self->child);
break;
case LAST_ARG + GTK_ROOT_PROP_FOCUS_WIDGET:
g_value_set_object (value, NULL);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -314,8 +326,14 @@ gtk_drag_icon_set_property (GObject *object,
const GValue *value,
GParamSpec *pspec)
{
GtkDragIcon *self = GTK_DRAG_ICON (object);
switch (prop_id)
{
case PROP_CHILD:
gtk_drag_icon_set_child (self, g_value_get_object (value));
break;
case LAST_ARG + GTK_ROOT_PROP_FOCUS_WIDGET:
// do nothing
break;
@ -325,41 +343,11 @@ gtk_drag_icon_set_property (GObject *object,
}
}
static void
gtk_drag_icon_add (GtkContainer *self,
GtkWidget *widget)
{
GtkDragIcon *icon = GTK_DRAG_ICON (self);
if (icon->widget)
{
g_warning ("GtkDragIcon already has a child");
return;
}
gtk_widget_set_parent (widget, GTK_WIDGET (icon));
icon->widget = widget;
}
static void
gtk_drag_icon_remove (GtkContainer *self,
GtkWidget *widget)
{
GtkDragIcon *icon = GTK_DRAG_ICON (self);
if (icon->widget == widget)
{
gtk_widget_unparent (widget);
icon->widget = NULL;
}
}
static void
gtk_drag_icon_class_init (GtkDragIconClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
GtkContainerClass *container_class = GTK_CONTAINER_CLASS (klass);
object_class->dispose = gtk_drag_icon_dispose;
object_class->get_property = gtk_drag_icon_get_property;
@ -374,9 +362,19 @@ gtk_drag_icon_class_init (GtkDragIconClass *klass)
widget_class->show = gtk_drag_icon_show;
widget_class->hide = gtk_drag_icon_hide;
container_class->add = gtk_drag_icon_add;
container_class->remove = gtk_drag_icon_remove;
/**
* GtkDragIcon:child:
*
* The widget to display as drag icon.
*/
properties[PROP_CHILD] =
g_param_spec_object ("child",
P_("Child"),
P_("The widget to display as drag icon."),
GTK_TYPE_WIDGET,
G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
g_object_class_install_properties (object_class, LAST_ARG, properties);
gtk_root_install_properties (object_class, LAST_ARG);
gtk_widget_class_set_css_name (widget_class, "dnd");
@ -441,7 +439,7 @@ gtk_drag_icon_set_from_paintable (GdkDrag *drag,
picture = gtk_picture_new_for_paintable (paintable);
gtk_picture_set_can_shrink (GTK_PICTURE (picture), FALSE);
gtk_container_add (GTK_CONTAINER (icon), picture);
gtk_drag_icon_set_child (GTK_DRAG_ICON (icon), picture);
g_object_set_data_full (G_OBJECT (drag),
"icon",
@ -457,18 +455,47 @@ gtk_drag_icon_set_surface (GtkDragIcon *icon,
g_set_object (&icon->surface, surface);
}
/**
* gtk_drag_icon_set_child:
* @self: a #GtkDragIcon
* @child: (nullable): a #GtkWidget or %NULL
*
* Sets the widget to display as the drag icon.
**/
void
gtk_drag_icon_set_widget (GtkDragIcon *icon,
GtkWidget *widget)
gtk_drag_icon_set_child (GtkDragIcon *self,
GtkWidget *child)
{
if (icon->widget == widget)
g_return_if_fail (GTK_IS_DRAG_ICON (self));
g_return_if_fail (child == NULL || GTK_IS_WIDGET (child));
if (self->child == child)
return;
if (icon->widget)
gtk_widget_unparent (icon->widget);
if (self->child)
gtk_widget_unparent (self->child);
icon->widget = widget;
self->child = child;
if (icon->widget)
gtk_widget_set_parent (icon->widget, GTK_WIDGET (icon));
if (self->child)
gtk_widget_set_parent (self->child, GTK_WIDGET (self));
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_CHILD]);
}
/**
* gtk_drag_icon_get_child:
* @self: a #GtkDragIcon
*
* Gets the widget currently used as drag icon.
*
* Returns: (nullable) (transfer none): The drag icon or %NULL if none.
**/
GtkWidget *
gtk_drag_icon_get_child (GtkDragIcon *self)
{
g_return_val_if_fail (GTK_IS_DRAG_ICON (self), NULL);
return self->child;
}

7
gtk/gtkdragicon.h
View File

@ -39,6 +39,13 @@ G_DECLARE_FINAL_TYPE (GtkDragIcon, gtk_drag_icon, GTK, DRAG_ICON, GtkContainer)
GDK_AVAILABLE_IN_ALL
GtkWidget * gtk_drag_icon_new_for_drag (GdkDrag *drag);
GDK_AVAILABLE_IN_ALL
void gtk_drag_icon_set_child (GtkDragIcon *self,
GtkWidget *widget);
GDK_AVAILABLE_IN_ALL
GtkWidget * gtk_drag_icon_get_child (GtkDragIcon *self);
GDK_AVAILABLE_IN_ALL
void gtk_drag_icon_set_from_paintable (GdkDrag *drag,
GdkPaintable *paintable,