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year-view: render DnD selector on hover

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This commit adds the ability to render a DnD square
to give visual feedback for the hover operation.
This commit is contained in:
Georges Basile Stavracas Neto
2016-05-21 18:54:47 -03:00
parent c7d92e9f37
commit 44f5cbe607
3 changed files with 72 additions and 0 deletions
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src/gcal-year-view.c
+66
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@@ -35,6 +35,7 @@ typedef struct
gint start_day, start_month;
gint end_day, end_month;
gint hovered_day, hovered_month;
gint dnd_day, dnd_month;
} ButtonData;
typedef struct
@@ -751,6 +752,28 @@ draw_month_grid (GcalYearView *year_view,
gtk_style_context_set_state (context, state_flags);
}
/* Draw the Drag n' Drop indicator */
if (year_view->selected_data->dnd_day == j &&
year_view->selected_data->dnd_month == month_nr)
{
gint dnd_x, dnd_y;
dnd_x = box_side * column + x + sw * box_padding_start / 2.0 - year_view->k * box_side - 2.0;
dnd_y = box_side * (row + 1) + y + box_padding_top - 1.0;
gtk_style_context_save (context);
gtk_style_context_add_class (context, "dnd");
gtk_render_background (context,
cr,
dnd_x,
dnd_y,
box_side - box_padding_start / 2.0,
box_side);
gtk_style_context_restore (context);
}
selected_day = FALSE;
if (year_view->selected_data->start_day != 0)
{
@@ -1233,6 +1256,48 @@ calculate_sizes (GcalYearView *self)
calculate_grid_sizes (self);
}
/*
* Drag and Drop functions
*/
static gboolean
navigator_drag_motion_cb (GcalYearView *self,
GdkDragContext *context,
gint x,
gint y,
guint time,
GtkWidget *navigator)
{
gint day, month;
gboolean is_title, retval;
retval = FALSE;
self->selected_data->dnd_day = -1;
self->selected_data->dnd_month = -1;
if (calculate_day_month_for_coord (self, x, y, &day, &month, &is_title))
{
/* For now, don't allow dropping events on the month title */
if (!is_title)
{
self->selected_data->dnd_day = day;
self->selected_data->dnd_month = month;
gdk_drag_status (context, GDK_ACTION_COPY, time);
retval = TRUE;
}
}
else
{
gdk_drag_status (context, 0, time);
}
gtk_widget_queue_draw (self->navigator);
return retval;
}
static void
gcal_year_view_finalize (GObject *object)
{
@@ -1627,6 +1692,7 @@ gcal_year_view_class_init (GcalYearViewClass *klass)
gtk_widget_class_bind_template_callback (widget_class, draw_navigator);
gtk_widget_class_bind_template_callback (widget_class, navigator_button_press_cb);
gtk_widget_class_bind_template_callback (widget_class, navigator_button_release_cb);
gtk_widget_class_bind_template_callback (widget_class, navigator_drag_motion_cb);
gtk_widget_class_bind_template_callback (widget_class, navigator_motion_notify_cb);
gtk_widget_class_bind_template_callback (widget_class, add_event_clicked_cb);
gtk_widget_class_bind_template_callback (widget_class, popover_closed_cb);