[gnome-todo/wip/gbsneto/dnd-fixups: 6/6] task-row: Make most of the row header draggable

[Gitlab Administrative User <gitlab src gnome org>]

commit 9787f47725146caf99ef667351ded48b8ac73413
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Tue Oct 31 16:40:12 2017 -0200

    task-row: Make most of the row header draggable
    
    Related to both #104 and #106

 data/ui/task-row.ui |  6 +++++-
 src/gtd-task-row.c  | 15 ++++++++++++---
 2 files changed, 17 insertions(+), 4 deletions(-)
---
diff --git a/data/ui/task-row.ui b/data/ui/task-row.ui
index d959045..aced237 100644
--- a/data/ui/task-row.ui
+++ b/data/ui/task-row.ui
@@ -77,8 +77,12 @@
                 </child>
 
                 <child>
-                  <object class="GtkEventBox">
+                  <object class="GtkEventBox" id="header_event_box">
                     <property name="visible">True</property>
+                    <signal name="button-press-event" handler="button_press_event" object="GtdTaskRow" 
swapped="no" />
+                    <signal name="drag-begin" handler="drag_begin_cb" object="GtdTaskRow" swapped="no" />
+                    <signal name="drag-end" handler="drag_end_cb" object="GtdTaskRow" swapped="no" />
+                    <signal name="drag-failed" handler="drag_failed_cb" object="GtdTaskRow" swapped="no" />
                     <signal name="enter-notify-event" handler="mouse_over_event_cb" object="GtdTaskRow" 
swapped="no" />
                     <signal name="leave-notify-event" handler="mouse_out_event_cb" object="GtdTaskRow" 
swapped="no" />
                     <child>
diff --git a/src/gtd-task-row.c b/src/gtd-task-row.c
index dcd4e12..80ff5f8 100644
--- a/src/gtd-task-row.c
+++ b/src/gtd-task-row.c
@@ -39,6 +39,7 @@ struct _GtdTaskRow
   GtkWidget          *done_check;
   GtkWidget          *edit_panel;
   GtkWidget          *edit_panel_revealer;
+  GtkWidget          *header_event_box;
   GtkWidget          *title_entry;
   GtkWidget          *toggle_button;
 
@@ -199,7 +200,7 @@ button_press_event (GtkWidget      *widget,
 }
 
 static void
-drag_begin_cb (GtkWidget      *dnd_event_box,
+drag_begin_cb (GtkWidget      *event_box,
                GdkDragContext *context,
                GtdTaskRow     *self)
 {
@@ -209,7 +210,7 @@ drag_begin_cb (GtkWidget      *dnd_event_box,
 
   widget = GTK_WIDGET (self);
 
-  gtk_widget_translate_coordinates (dnd_event_box,
+  gtk_widget_translate_coordinates (event_box,
                                     widget,
                                     self->clicked_x,
                                     self->clicked_y,
@@ -234,7 +235,7 @@ drag_begin_cb (GtkWidget      *dnd_event_box,
 }
 
 static void
-drag_end_cb (GtkWidget      *dnd_event_box,
+drag_end_cb (GtkWidget      *event_box,
              GdkDragContext *context,
              GtdTaskRow     *self)
 {
@@ -619,6 +620,7 @@ gtd_task_row_class_init (GtdTaskRowClass *klass)
   gtk_widget_class_bind_template_child (widget_class, GtdTaskRow, done_check);
   gtk_widget_class_bind_template_child (widget_class, GtdTaskRow, edit_panel);
   gtk_widget_class_bind_template_child (widget_class, GtdTaskRow, edit_panel_revealer);
+  gtk_widget_class_bind_template_child (widget_class, GtdTaskRow, header_event_box);
   gtk_widget_class_bind_template_child (widget_class, GtdTaskRow, revealer);
   gtk_widget_class_bind_template_child (widget_class, GtdTaskRow, task_date_label);
   gtk_widget_class_bind_template_child (widget_class, GtdTaskRow, task_list_label);
@@ -654,6 +656,13 @@ gtd_task_row_init (GtdTaskRow *self)
                        NULL,
                        0,
                        GDK_ACTION_MOVE);
+
+  /* But the rest of the row header is also draggable */
+  gtk_drag_source_set (self->header_event_box,
+                       GDK_BUTTON1_MASK,
+                       NULL,
+                       0,
+                       GDK_ACTION_MOVE);
 }
 
 GtkWidget*