Import Upstream version 43.0upstream/latest

1 files changed, 193 insertions, 0 deletions

diff --git a/src/gui/gtd-star-widget.c b/src/gui/gtd-star-widget.c
new file mode 100644
index 0000000..cb6991b
--- /dev/null
+++ b/src/gui/gtd-star-widget.c
@@ -0,0 +1,193 @@
+/* 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]);
+}