week-grid: implement drag n' drop
This commit is contained in:
Georges Basile Stavracas Neto
+172
-2
@@ -66,6 +66,7 @@ struct _GcalWeekGrid
|
||||
*/
|
||||
gint selection_start;
|
||||
gint selection_end;
|
||||
gint dnd_cell;
|
||||
|
||||
GcalManager *manager;
|
||||
};
|
||||
@@ -441,6 +442,7 @@ gcal_week_grid_draw (GtkWidget *widget,
|
||||
GdkRGBA color;
|
||||
|
||||
gboolean ltr;
|
||||
gdouble minutes_height;
|
||||
gdouble x, column_width;
|
||||
gint i, width, height, today_column;
|
||||
|
||||
@@ -464,13 +466,13 @@ gcal_week_grid_draw (GtkWidget *widget,
|
||||
width = gtk_widget_get_allocated_width (widget);
|
||||
height = gtk_widget_get_allocated_height (widget);
|
||||
column_width = width / 7.0;
|
||||
minutes_height = (gdouble) height / MINUTES_PER_DAY;
|
||||
|
||||
cairo_set_line_width (cr, 0.65);
|
||||
|
||||
/* First, draw the selection */
|
||||
if (self->selection_start != -1 && self->selection_end != -1)
|
||||
{
|
||||
gdouble minutes_height;
|
||||
gint selection_height;
|
||||
gint column;
|
||||
gint start;
|
||||
@@ -487,7 +489,6 @@ gcal_week_grid_draw (GtkWidget *widget,
|
||||
start = start - end;
|
||||
}
|
||||
|
||||
minutes_height = (gdouble) height / MINUTES_PER_DAY;
|
||||
column = start * 30 / MINUTES_PER_DAY;
|
||||
selection_height = (end - start + 1) * 30 * minutes_height;
|
||||
|
||||
@@ -506,6 +507,24 @@ gcal_week_grid_draw (GtkWidget *widget,
|
||||
gtk_style_context_restore (context);
|
||||
}
|
||||
|
||||
/* Drag and Drop highlight */
|
||||
if (self->dnd_cell != -1)
|
||||
{
|
||||
gdouble cell_height;
|
||||
gint column, row;
|
||||
|
||||
cell_height = minutes_height * 30;
|
||||
column = self->dnd_cell / (MINUTES_PER_DAY / 30);
|
||||
row = self->dnd_cell - column * 48;
|
||||
|
||||
gtk_render_background (context,
|
||||
cr,
|
||||
column * column_width,
|
||||
row * cell_height,
|
||||
column_width,
|
||||
cell_height);
|
||||
}
|
||||
|
||||
/* Today column */
|
||||
today_column = get_today_column (GCAL_WEEK_GRID (widget));
|
||||
|
||||
@@ -902,6 +921,146 @@ gcal_week_grid_button_release (GtkWidget *widget,
|
||||
return GDK_EVENT_STOP;
|
||||
}
|
||||
|
||||
static gint
|
||||
get_dnd_cell (GtkWidget *widget,
|
||||
gint x,
|
||||
gint y)
|
||||
{
|
||||
GtkAllocation alloc;
|
||||
gdouble column_width, cell_height;
|
||||
gint column, row;
|
||||
|
||||
gtk_widget_get_allocation (widget, &alloc);
|
||||
|
||||
column_width = alloc.width / 7.0;
|
||||
cell_height = alloc.height / 48.0;
|
||||
column = floor (x / column_width);
|
||||
row = y / cell_height;
|
||||
|
||||
return column * 48 + row;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gcal_week_grid_drag_motion (GtkWidget *widget,
|
||||
GdkDragContext *context,
|
||||
gint x,
|
||||
gint y,
|
||||
guint time)
|
||||
{
|
||||
GcalWeekGrid *self;
|
||||
|
||||
self = GCAL_WEEK_GRID (widget);
|
||||
self->dnd_cell = get_dnd_cell (widget, x, y);
|
||||
|
||||
/* Setup the drag highlight */
|
||||
if (self->dnd_cell != -1)
|
||||
gtk_drag_highlight (widget);
|
||||
else
|
||||
gtk_drag_unhighlight (widget);
|
||||
|
||||
/*
|
||||
* Sets the status of the drag - if it fails, sets the action to 0 and
|
||||
* aborts the drag with FALSE.
|
||||
*/
|
||||
gdk_drag_status (context,
|
||||
self->dnd_cell == -1 ? 0 : GDK_ACTION_COPY,
|
||||
time);
|
||||
|
||||
gtk_widget_queue_draw (widget);
|
||||
|
||||
return self->dnd_cell != -1;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gcal_week_grid_drag_drop (GtkWidget *widget,
|
||||
GdkDragContext *context,
|
||||
gint x,
|
||||
gint y,
|
||||
guint time)
|
||||
{
|
||||
GcalWeekGrid *self;
|
||||
g_autoptr (GDateTime) week_start;
|
||||
g_autoptr (GDateTime) dnd_date;
|
||||
GtkWidget *event_widget;
|
||||
GcalEvent *event;
|
||||
GTimeSpan timespan = 0;
|
||||
gboolean ltr;
|
||||
gint drop_cell;
|
||||
|
||||
self = GCAL_WEEK_GRID (widget);
|
||||
ltr = gtk_widget_get_direction (widget) != GTK_TEXT_DIR_RTL;
|
||||
drop_cell = get_dnd_cell (widget, x, y);
|
||||
event_widget = gtk_drag_get_source_widget (context);
|
||||
|
||||
week_start = dnd_date = NULL;
|
||||
|
||||
if (!GCAL_IS_EVENT_WIDGET (event_widget))
|
||||
return FALSE;
|
||||
|
||||
/* RTL languages swap the drop cell column */
|
||||
if (!ltr)
|
||||
{
|
||||
gint column, row;
|
||||
|
||||
column = drop_cell / (MINUTES_PER_DAY / 30);
|
||||
row = drop_cell - column * 48;
|
||||
|
||||
drop_cell = (6 - column) * 48 + row;
|
||||
}
|
||||
|
||||
event = gcal_event_widget_get_event (GCAL_EVENT_WIDGET (event_widget));
|
||||
week_start = get_start_of_week (self->active_date);
|
||||
dnd_date = g_date_time_add_minutes (week_start, drop_cell * 30);
|
||||
|
||||
/*
|
||||
* Calculate the diff between the dropped cell and the event's start date,
|
||||
* so we can update the end date accordingly.
|
||||
*/
|
||||
if (gcal_event_get_date_end (event))
|
||||
timespan = g_date_time_difference (gcal_event_get_date_end (event), gcal_event_get_date_start (event));
|
||||
|
||||
/*
|
||||
* Set the event's start and end dates. Since the event may have a
|
||||
* NULL end date, so we have to check it here
|
||||
*/
|
||||
gcal_event_set_all_day (event, FALSE);
|
||||
gcal_event_set_date_start (event, dnd_date);
|
||||
|
||||
if (gcal_event_get_date_end (event))
|
||||
{
|
||||
g_autoptr (GDateTime) new_end = g_date_time_add (dnd_date, timespan);
|
||||
|
||||
gcal_event_set_date_end (event, new_end);
|
||||
}
|
||||
|
||||
/* Commit the changes */
|
||||
gcal_manager_update_event (self->manager, event);
|
||||
|
||||
/* Cancel the DnD */
|
||||
self->dnd_cell = -1;
|
||||
gtk_drag_unhighlight (widget);
|
||||
|
||||
gtk_drag_finish (context, TRUE, FALSE, time);
|
||||
|
||||
gtk_widget_queue_draw (widget);
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static void
|
||||
gcal_week_grid_drag_leave (GtkWidget *widget,
|
||||
GdkDragContext *context,
|
||||
guint time)
|
||||
{
|
||||
GcalWeekGrid *self = GCAL_WEEK_GRID (widget);
|
||||
|
||||
/* Cancel the drag */
|
||||
self->dnd_cell = -1;
|
||||
gtk_drag_unhighlight (widget);
|
||||
|
||||
gtk_widget_queue_draw (widget);
|
||||
}
|
||||
|
||||
static void
|
||||
gcal_week_grid_class_init (GcalWeekGridClass *klass)
|
||||
{
|
||||
@@ -927,6 +1086,9 @@ gcal_week_grid_class_init (GcalWeekGridClass *klass)
|
||||
widget_class->button_press_event = gcal_week_grid_button_press;
|
||||
widget_class->motion_notify_event = gcal_week_grid_motion_notify_event;
|
||||
widget_class->button_release_event = gcal_week_grid_button_release;
|
||||
widget_class->drag_motion = gcal_week_grid_drag_motion;
|
||||
widget_class->drag_leave = gcal_week_grid_drag_leave;
|
||||
widget_class->drag_drop = gcal_week_grid_drag_drop;
|
||||
|
||||
properties[PROP_ACTIVE_DATE] = g_param_spec_boxed ("active-date",
|
||||
"Date",
|
||||
@@ -955,8 +1117,16 @@ gcal_week_grid_init (GcalWeekGrid *self)
|
||||
|
||||
self->selection_start = -1;
|
||||
self->selection_end = -1;
|
||||
self->dnd_cell = -1;
|
||||
|
||||
self->events = gcal_range_tree_new ();
|
||||
|
||||
/* Setup the week view as a drag n' drop destination */
|
||||
gtk_drag_dest_set (GTK_WIDGET (self),
|
||||
0,
|
||||
NULL,
|
||||
0,
|
||||
GDK_ACTION_MOVE);
|
||||
}
|
||||
|
||||
/* Public API */
|
||||
|
||||
Reference in New Issue
Block a user