apps/irssi/src/fe-text/mainwindows-layout.c

   1 /*
   2  mainwindows-layout.c : irssi
   3
   4     Copyright (C) 2001 Timo Sirainen
   5
   6     This program is free software; you can redistribute it and/or modify
   7     it under the terms of the GNU General Public License as published by
   8     the Free Software Foundation; either version 2 of the License, or
   9     (at your option) any later version.
  10
  11     This program is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with this program; if not, write to the Free Software
  18     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19 */
  20
  21 #include "module.h"
  22 #include "signals.h"
  23 #include "misc.h"
  24 #include "lib-config/iconfig.h"
  25 #include "settings.h"
  26
  27 #include "mainwindows.h"
  28 #include "gui-windows.h"
  29 #include "textbuffer-view.h"
  30
  31 static void sig_layout_window_save(WINDOW_REC *window, CONFIG_NODE *node)
  32 {
  33         WINDOW_REC *active;
  34         GUI_WINDOW_REC *gui;
  35
  36         gui = WINDOW_GUI(window);
  37         if (gui->sticky) {
  38                 iconfig_node_set_bool(node, "sticky", TRUE);
  39                 active = gui->parent->active;
  40                 if (window != active)
  41                         iconfig_node_set_int(node, "parent", active->refnum);
  42         }
  43
  44         if (gui->use_scroll)
  45                 iconfig_node_set_bool(node, "scroll", gui->scroll);
  46 }
  47
  48 static void sig_layout_window_restore(WINDOW_REC *window, CONFIG_NODE *node)
  49 {
  50         WINDOW_REC *parent;
  51         GUI_WINDOW_REC *gui;
  52
  53         gui = WINDOW_GUI(window);
  54
  55         parent = window_find_refnum(config_node_get_int(node, "parent", -1));
  56         if (parent != NULL)
  57                 gui_window_reparent(window, WINDOW_MAIN(parent));
  58
  59         if (config_node_get_bool(node, "sticky", FALSE))
  60                 gui_window_set_sticky(window);
  61         if (config_node_get_str(node, "scroll", NULL) != NULL) {
  62                 gui->use_scroll = TRUE;
  63                 gui->scroll = config_node_get_bool(node, "scroll", TRUE);
  64                 textbuffer_view_set_scroll(gui->view, gui->scroll);
  65         }
  66 }
  67
  68 static void main_window_save(MAIN_WINDOW_REC *window, CONFIG_NODE *node)
  69 {
  70         char num[MAX_INT_STRLEN];
  71
  72         ltoa(num, window->active->refnum);
  73         node = config_node_section(node, num, NODE_TYPE_BLOCK);
  74
  75         iconfig_node_set_int(node, "first_line", window->first_line);
  76         iconfig_node_set_int(node, "lines", window->height);
  77 }
  78
  79 static void sig_layout_save(void)
  80 {
  81         CONFIG_NODE *node;
  82
  83         iconfig_set_str(NULL, "mainwindows", NULL);
  84         node = iconfig_node_traverse("mainwindows", TRUE);
  85
  86         g_slist_foreach(mainwindows, (GFunc) main_window_save, node);
  87 }
  88
  89 static int window_node_cmp(CONFIG_NODE *n1, CONFIG_NODE *n2)
  90 {
  91         return config_node_get_int(n1, "first_line", 0) >
  92                 config_node_get_int(n2, "first_line", 0) ? -1 : 1;
  93 }
  94
  95 /* Returns list of mainwindow nodes sorted by first_line
  96    (lowest in screen first) */
  97 static GSList *get_sorted_windows_config(CONFIG_NODE *node)
  98 {
  99         GSList *tmp, *output;
 100
 101         output = NULL;
 102         tmp = config_node_first(node->value);
 103         for (; tmp != NULL; tmp = config_node_next(tmp)) {
 104                 output = g_slist_insert_sorted(output, tmp->data,
 105                                                (GCompareFunc) window_node_cmp);
 106         }
 107
 108         return output;
 109 }
 110
 111 static void sig_layout_restore(void)
 112 {
 113         MAIN_WINDOW_REC *lower_window;
 114         WINDOW_REC *window;
 115         CONFIG_NODE *node;
 116         GSList *tmp, *sorted_config;
 117         int avail_height, height, *heights;
 118         int i, lower_size, windows_count, diff;
 119
 120         node = iconfig_node_traverse("mainwindows", FALSE);
 121         if (node == NULL) return;
 122
 123         sorted_config = get_sorted_windows_config(node);
 124         windows_count = g_slist_length(sorted_config);
 125
 126         /* calculate the saved terminal height */
 127         avail_height = term_height -
 128                 screen_reserved_top - screen_reserved_bottom;
 129         height = 0;
 130         heights = g_new0(int, windows_count);
 131         for (i = 0, tmp = sorted_config; tmp != NULL; tmp = tmp->next, i++) {
 132                 CONFIG_NODE *node = tmp->data;
 133
 134                 heights[i] = config_node_get_int(node, "lines", 0);
 135                 height += heights[i];
 136         }
 137
 138         if (avail_height <= (WINDOW_MIN_SIZE*2)+1) {
 139                 /* we can fit only one window to screen -
 140                    give it all the height we can */
 141                 windows_count = 1;
 142                 heights[0] = avail_height;
 143         } else if (height != avail_height) {
 144                 /* Terminal's height is different from the saved one.
 145                    Resize the windows so they fit to screen. */
 146                 while (height > avail_height &&
 147                        windows_count*(WINDOW_MIN_SIZE+1) > avail_height) {
 148                         /* all windows can't fit into screen,
 149                            remove the lowest ones */
 150                         windows_count--;
 151                 }
 152
 153                 /* try to keep the windows' size about the same in percents */
 154                 for (i = 0; i < windows_count; i++) {
 155                         int size = avail_height*heights[i]/height;
 156                         if (size < WINDOW_MIN_SIZE+1)
 157                                 size = WINDOW_MIN_SIZE+1;
 158                         heights[i] = size;
 159                 }
 160
 161                 /* give/remove the last bits */
 162                 height = 0;
 163                 for (i = 0; i < windows_count; i++)
 164                         height += heights[i];
 165
 166                 diff = height < avail_height ? 1 : -1;
 167                 for (i = 0; height != avail_height; i++) {
 168                         if (i == windows_count)
 169                                 i = 0;
 170
 171                         if (heights[i] > WINDOW_MIN_SIZE+1) {
 172                                 height += diff;
 173                                 heights[i] += diff;
 174                         }
 175                 }
 176         }
 177
 178         /* create all the visible windows with correct size */
 179         lower_window = NULL; lower_size = 0;
 180         for (i = 0, tmp = sorted_config; i < windows_count; tmp = tmp->next, i++) {
 181                 CONFIG_NODE *node = tmp->data;
 182
 183                 /* create a new window + mainwindow */
 184                 signal_emit("gui window create override", 1,
 185                             GINT_TO_POINTER(0));
 186
 187                 window = window_create(NULL, TRUE);
 188                 window_set_refnum(window, atoi(node->key));
 189
 190                 if (lower_size > 0)
 191                         mainwindow_set_size(lower_window, lower_size, FALSE);
 192
 193                 window_set_active(window);
 194                 active_mainwin = WINDOW_MAIN(window);
 195
 196                 lower_window = WINDOW_MAIN(window);
 197                 lower_size = heights[i];
 198                 if (lower_size < WINDOW_MIN_SIZE+1)
 199                         lower_size = WINDOW_MIN_SIZE+1;
 200         }
 201         g_slist_free(sorted_config);
 202         g_free(heights);
 203
 204         if (lower_size > 0)
 205                 mainwindow_set_size(lower_window, lower_size, FALSE);
 206 }
 207
 208 static void sig_layout_reset(void)
 209 {
 210         iconfig_set_str(NULL, "mainwindows", NULL);
 211 }
 212
 213 void mainwindows_layout_init(void)
 214 {
 215         signal_add("layout save window", (SIGNAL_FUNC) sig_layout_window_save);
 216         signal_add("layout restore window", (SIGNAL_FUNC) sig_layout_window_restore);
 217         signal_add("layout save", (SIGNAL_FUNC) sig_layout_save);
 218         signal_add_first("layout restore", (SIGNAL_FUNC) sig_layout_restore);
 219         signal_add("layout reset", (SIGNAL_FUNC) sig_layout_reset);
 220 }
 221
 222 void mainwindows_layout_deinit(void)
 223 {
 224         signal_remove("layout save window", (SIGNAL_FUNC) sig_layout_window_save);
 225         signal_remove("layout restore window", (SIGNAL_FUNC) sig_layout_window_restore);
 226         signal_remove("layout save", (SIGNAL_FUNC) sig_layout_save);
 227         signal_remove("layout restore", (SIGNAL_FUNC) sig_layout_restore);
 228         signal_remove("layout reset", (SIGNAL_FUNC) sig_layout_reset);
 229 }