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/*
* notion/ioncore/frame-tabs-recalc.h
*
* Copyright (c) Tomas Ebenlendr 2011.
*
* See the included file LICENSE for details.
*/
#ifndef NOTION_IONCORE_FRAME_TABS_RECALC_H
#define NOTION_IONCORE_FRAME_TABS_RECALC_H
#include "libtu/map.h"
#include "libtu/obj.h"
/* Compute inner widths of tabs and width of shaped bar.
* There will be more algorithms to do this, thus here
* is prototype of the called function.
*
* Requirements:
*
* If complete is set and frame->barmode==FRAME_BAR_SHAPED
* then frame->bar_w has to be updated.
* return TRUE if bar_w changed (i.e, new value != old value)
* return the value of 'complete' on normal run.
* frame_set_shape or frame_clear_shape is called when TRUE is returned.
*
* The function is called only if
* frame->bar_brush != NULL && frame->titles != NULL
*/
typedef bool (*TabCalcPtr)(WFrame *frame, bool complete);
/* Gets the identifier of the algorithm. */
const char *frame_get_tabs_sizes_algorithm(WFrame *frame);
/* Sets the algorithm based on the identifier.
* Returns -1 on failure, 1 on successfull change, 0 on success but no change
* If 1 is returned, frame_bar_recalc and frame_bar_draw should be called.
*/
int frame_do_set_tabs_sizes_algorithm(WFrame *frame, const char *algstr);
INTRSTRUCT(TabCalcParams);
DECLSTRUCT(TabCalcParams){
TabCalcPtr alg;
/* Maximum size of shaped bar. */
double bar_max_width_q;
/* Minimum width of a tab in shaped frame.
* For 'proportional' and 'elastic' algorithms also minimum width of a tab
* provided that no title has to be truncated
*/
int tab_min_w;
/* Requested empty space to be added before and after text. */
int requested_pad;
/* Minimum width of a tab for 'proportional' and 'elastic' algorithms.
* Long titles will be truncated instead of shortening a short tab below
* this length.
*/
int propor_tab_min_w;
};
void frame_tabs_calc_brushes_updated(WFrame *frame);
void frame_tabs_width_recalc_init(WFrame *frame);
#endif /* NOTION_IONCORE_FRAME_TABS_RECALC_H */
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