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/* Event layout engine for Gnomecal
*
* Copyright (C) 1998 The Free Software Foundation
*
* Authors: Miguel de Icaza <miguel@nuclecu.unam.mx>
* Federico Mena <federico@nuclecu.unam.mx>
*/
#ifndef LAYOUT_H
#define LAYOUT_H
#include <glib.h>
#include <time.h>
/* Functions of this type must translate the list item into two time_t values for the start and end
* of an event.
*/
typedef void (* LayoutQueryTimeFunc) (GList *event, time_t *start, time_t *end);
/* This is the main layout function for overlapping events. You pass in a list of (presumably)
* events and a function that should take a list element and return the start and end times for the
* event corresponding to that list element.
*
* It returns the number of slots ("columns") that you need to take into account when actually
* painting the events, the array of the first slot index that each event occupies, and the array of
* number of slots that each event occupies. You have to free both arrays.
*
* You will get somewhat better-looking results if the list of events is sorted by using the start
* time as the primary sort key and the end time as the secondary sort key -- so that "longer"
* events go first in the list.
*/
void layout_events (GList *events, LayoutQueryTimeFunc func, int *num_slots, int **allocations, int **slots);
#endif
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