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/* gtd-star-widget.c
*
* Copyright 2020 Georges Basile Stavracas Neto <georges.stavracas@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* SPDX-License-Identifier: GPL-3.0-or-later
*/
#include "gtd-star-widget.h"
struct _GtdStarWidget
{
GtdWidget parent;
GtkWidget *filled_star;
GtkWidget *empty_star;
gboolean active;
};
G_DEFINE_TYPE (GtdStarWidget, gtd_star_widget, GTD_TYPE_WIDGET)
enum
{
PROP_0,
PROP_ACTIVE,
N_PROPS
};
static GParamSpec *properties [N_PROPS];
/*
* Callbacks
*/
static void
on_star_widget_clicked_cb (GtkGestureClick *gesture,
gint n_press,
gdouble x,
gdouble y,
GtdStarWidget *self)
{
gtd_star_widget_set_active (self, !self->active);
gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_CLAIMED);
}
/*
* GObject overrides
*/
static void
gtd_star_widget_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtdStarWidget *self = GTD_STAR_WIDGET (object);
switch (prop_id)
{
case PROP_ACTIVE:
g_value_set_boolean (value, self->active);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
gtd_star_widget_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtdStarWidget *self = GTD_STAR_WIDGET (object);
switch (prop_id)
{
case PROP_ACTIVE:
gtd_star_widget_set_active (self, g_value_get_boolean (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
gtd_star_widget_class_init (GtdStarWidgetClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
object_class->get_property = gtd_star_widget_get_property;
object_class->set_property = gtd_star_widget_set_property;
/**
* GtdStarWidget:active:
*
* Whether the star widget is active or not. When active, the
* star appears filled.
*/
properties[PROP_ACTIVE] = g_param_spec_boolean ("active",
"Active",
"Active",
FALSE,
G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
g_object_class_install_properties (object_class, N_PROPS, properties);
gtk_widget_class_set_layout_manager_type (widget_class, GTK_TYPE_BIN_LAYOUT);
gtk_widget_class_set_css_name (widget_class, "star");
}
static void
gtd_star_widget_init (GtdStarWidget *self)
{
GtkGesture *click_gesture;
click_gesture = gtk_gesture_click_new ();
gtk_gesture_single_set_touch_only (GTK_GESTURE_SINGLE (click_gesture), FALSE);
gtk_gesture_single_set_exclusive (GTK_GESTURE_SINGLE (click_gesture), TRUE);
gtk_gesture_single_set_button (GTK_GESTURE_SINGLE (click_gesture), GDK_BUTTON_PRIMARY);
gtk_event_controller_set_propagation_phase (GTK_EVENT_CONTROLLER (click_gesture), GTK_PHASE_CAPTURE);
g_signal_connect (click_gesture, "pressed", G_CALLBACK (on_star_widget_clicked_cb), self);
gtk_widget_add_controller (GTK_WIDGET (self), GTK_EVENT_CONTROLLER (click_gesture));
gtk_widget_set_cursor_from_name (GTK_WIDGET (self), "default");
self->empty_star = gtk_image_new_from_icon_name ("non-starred-symbolic");
gtk_widget_set_parent (self->empty_star, GTK_WIDGET (self));
self->filled_star = gtk_image_new_from_icon_name ("starred-symbolic");
gtk_widget_set_parent (self->filled_star, GTK_WIDGET (self));
gtk_widget_hide (self->filled_star);
g_object_bind_property (self->filled_star,
"visible",
self->empty_star,
"visible",
G_BINDING_INVERT_BOOLEAN | G_BINDING_SYNC_CREATE);
}
GtkWidget*
gtd_star_widget_new (void)
{
return g_object_new (GTD_TYPE_STAR_WIDGET, NULL);
}
gboolean
gtd_star_widget_get_active (GtdStarWidget *self)
{
g_return_val_if_fail (GTD_IS_STAR_WIDGET (self), FALSE);
return self->active;
}
void
gtd_star_widget_set_active (GtdStarWidget *self,
gboolean active)
{
g_return_if_fail (GTD_IS_STAR_WIDGET (self));
if (self->active == active)
return;
self->active = active;
gtk_widget_set_visible (self->filled_star, active);
if (active)
gtk_widget_set_state_flags (GTK_WIDGET (self), GTK_STATE_FLAG_CHECKED, FALSE);
else
gtk_widget_unset_state_flags (GTK_WIDGET (self), GTK_STATE_FLAG_CHECKED);
/* TODO: explosion effect */
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_ACTIVE]);
}
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