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irssi/src/fe-text/statusbar.c

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/*
gui-statusbar.c : irssi
Copyright (C) 1999 Timo Sirainen
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "module.h"
#include "signals.h"
#include "server.h"
#include "settings.h"
#include "windows.h"
#include "screen.h"
#include "statusbar.h"
#include "gui-windows.h"
void statusbar_items_init(void);
void statusbar_items_deinit(void);
static GSList *statusbars;
static int sbar_uppest, sbar_lowest, sbars_up, sbars_down;
static void statusbar_item_destroy(SBAR_ITEM_REC *rec)
{
rec->bar->items = g_slist_remove(rec->bar->items, rec);
g_free(rec);
}
static void statusbar_redraw_line(STATUSBAR_REC *bar)
{
static int recurses = 0, resized = FALSE;
STATUSBAR_FUNC func;
GSList *tmp;
int xpos, rxpos, old_resized;
old_resized = resized;
resized = FALSE;
recurses++;
xpos = 1;
for (tmp = bar->items; tmp != NULL; tmp = tmp->next) {
SBAR_ITEM_REC *rec = tmp->data;
if (!rec->right_justify &&
(rec->max_size || xpos+rec->size < COLS)) {
rec->xpos = xpos;
if (rec->max_size)
rec->size = COLS-1-xpos;
func = (STATUSBAR_FUNC) rec->func;
func(rec, bar->ypos);
if (resized) break;
if (rec->size > 0) xpos += rec->size+1;
}
}
rxpos = COLS-1;
for (tmp = bar->items; tmp != NULL; tmp = tmp->next) {
SBAR_ITEM_REC *rec = tmp->data;
if (rec->right_justify && rxpos-rec->size > xpos) {
rec->xpos = rxpos-rec->size;
func = (STATUSBAR_FUNC) rec->func;
func(rec, bar->ypos);
if (resized) break;
if (rec->size > 0) rxpos -= rec->size+1;
}
}
resized = old_resized;
if (--recurses > 0) resized = TRUE;
}
static void statusbar_redraw_all(void)
{
GSList *tmp;
screen_refresh_freeze();
for (tmp = statusbars; tmp != NULL; tmp = tmp->next)
statusbar_redraw(tmp->data);
screen_refresh_thaw();
}
STATUSBAR_REC *statusbar_find(int pos, int line)
{
GSList *tmp;
for (tmp = statusbars; tmp != NULL; tmp = tmp->next) {
STATUSBAR_REC *rec = tmp->data;
if (rec->pos == pos && rec->line == line)
return rec;
}
return NULL;
}
void statusbar_redraw(STATUSBAR_REC *bar)
{
if (bar == NULL) {
statusbar_redraw_all();
return;
}
set_bg(stdscr, settings_get_int("statusbar_background") << 4);
move(bar->ypos, 0); clrtoeol();
set_bg(stdscr, 0);
statusbar_redraw_line(bar);
}
void statusbar_item_redraw(SBAR_ITEM_REC *item)
{
STATUSBAR_FUNC func;
g_return_if_fail(item != NULL);
func = (STATUSBAR_FUNC) item->func;
func(item, item->bar->ypos);
}
/* ypos is used only when pos == STATUSBAR_POS_MIDDLE */
STATUSBAR_REC *statusbar_create(int pos, int ypos)
{
STATUSBAR_REC *rec;
rec = g_new0(STATUSBAR_REC, 1);
statusbars = g_slist_append(statusbars, rec);
rec->pos = pos;
rec->line = pos == STATUSBAR_POS_MIDDLE ? ypos :
mainwindows_reserve_lines(1, pos == STATUSBAR_POS_UP);
rec->ypos = pos == STATUSBAR_POS_MIDDLE ? ypos :
pos == STATUSBAR_POS_UP ? rec->line : LINES-1-rec->line;
if (pos == STATUSBAR_POS_UP) {
if (sbars_up == 0) sbar_uppest = rec->line;
sbars_up++;
rec->line -= sbar_uppest;
} else if (pos == STATUSBAR_POS_DOWN) {
if (sbars_down == 0) sbar_lowest = rec->line;
sbars_down++;
rec->line -= sbar_lowest;
}
set_bg(stdscr, settings_get_int("statusbar_background") << 4);
move(rec->ypos, 0); clrtoeol();
set_bg(stdscr, 0);
return rec;
}
static void statusbars_pack(int pos, int line)
{
GSList *tmp;
for (tmp = statusbars; tmp != NULL; tmp = tmp->next) {
STATUSBAR_REC *rec = tmp->data;
if (rec->pos == pos && rec->line > line) {
rec->line--;
rec->ypos += pos == STATUSBAR_POS_UP ? -1 : 1;
}
}
}
void statusbar_destroy(STATUSBAR_REC *bar)
{
g_return_if_fail(bar != NULL);
if (bar->pos != STATUSBAR_POS_MIDDLE)
mainwindows_reserve_lines(-1, bar->pos == STATUSBAR_POS_UP);
if (bar->pos == STATUSBAR_POS_UP) sbars_up--;
if (bar->pos == STATUSBAR_POS_DOWN) sbars_down--;
statusbars = g_slist_remove(statusbars, bar);
while (bar->items != NULL)
statusbar_item_destroy(bar->items->data);
if (bar->pos != STATUSBAR_POS_MIDDLE)
statusbars_pack(bar->pos, bar->pos);
g_free(bar);
if (!quitting) statusbar_redraw_all();
}
SBAR_ITEM_REC *statusbar_item_create(STATUSBAR_REC *bar, int size, int right_justify, STATUSBAR_FUNC func)
{
SBAR_ITEM_REC *rec;
g_return_val_if_fail(bar != NULL, NULL);
g_return_val_if_fail(func != NULL, NULL);
rec = g_new0(SBAR_ITEM_REC, 1);
rec->bar = bar;
bar->items = g_slist_append(bar->items, rec);
rec->xpos = -1;
rec->size = size;
rec->right_justify = right_justify;
rec->func = (void *) func;
return rec;
}
void statusbar_item_resize(SBAR_ITEM_REC *item, int size)
{
g_return_if_fail(item != NULL);
item->size = size;
statusbar_redraw_all();
}
void statusbar_item_remove(SBAR_ITEM_REC *item)
{
g_return_if_fail(item != NULL);
statusbar_item_destroy(item);
if (!quitting) statusbar_redraw_all();
}
static void sig_mainwindow_resized(MAIN_WINDOW_REC *window)
{
STATUSBAR_REC *rec;
rec = window->statusbar;
rec->ypos = window->first_line+window->lines;
}
void statusbar_init(void)
{
statusbars = NULL;
sbars_up = sbars_down = 0;
statusbar_items_init();
signal_add("mainwindow resized", (SIGNAL_FUNC) sig_mainwindow_resized);
signal_add("mainwindow moved", (SIGNAL_FUNC) sig_mainwindow_resized);
}
void statusbar_deinit(void)
{
statusbar_items_deinit();
while (statusbars != NULL)
statusbar_destroy(statusbars->data);
signal_remove("mainwindow resized", (SIGNAL_FUNC) sig_mainwindow_resized);
signal_remove("mainwindow moved", (SIGNAL_FUNC) sig_mainwindow_resized);
}