apps/irssi/src/fe-text/gui-windows.c

   1 /*
   2  gui-windows.c : irssi
   3
   4     Copyright (C) 1999-2001 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 "settings.h"
  25 #include "special-vars.h"
  26
  27 #include "screen.h"
  28 #include "gui-entry.h"
  29 #include "gui-windows.h"
  30 #include "gui-printtext.h"
  31
  32 static int window_create_override;
  33
  34 static char *prompt, *prompt_window;
  35
  36 static GUI_WINDOW_REC *gui_window_init(WINDOW_REC *window,
  37                                        MAIN_WINDOW_REC *parent)
  38 {
  39         GUI_WINDOW_REC *gui;
  40
  41         window->width = parent->width;
  42         window->height = parent->height;
  43
  44         gui = g_new0(GUI_WINDOW_REC, 1);
  45         gui->parent = parent;
  46         gui->view = textbuffer_view_create(textbuffer_create(),
  47                                            window->width, window->height,
  48                                            settings_get_int("indent"),
  49                                            settings_get_bool("indent_always"));
  50         return gui;
  51 }
  52
  53 static void gui_window_deinit(GUI_WINDOW_REC *gui)
  54 {
  55         textbuffer_view_destroy(gui->view);
  56         g_free(gui);
  57 }
  58
  59 static void sig_window_create_override(gpointer tab)
  60 {
  61         window_create_override = GPOINTER_TO_INT(tab);
  62 }
  63
  64 static void gui_window_created(WINDOW_REC *window)
  65 {
  66         MAIN_WINDOW_REC *parent;
  67
  68         g_return_if_fail(window != NULL);
  69
  70         parent = window_create_override != 0 &&
  71                 active_win != NULL && WINDOW_GUI(active_win) != NULL ?
  72                 WINDOW_GUI(active_win)->parent : mainwindow_create();
  73         if (parent == NULL) {
  74                 /* not enough space for new window, but we really can't
  75                    abort creation of the window anymore, so create hidden
  76                    window instead. */
  77                 parent = WINDOW_GUI(active_win)->parent;
  78         }
  79         window_create_override = -1;
  80
  81         if (settings_get_bool("autostick_split_windows") &&
  82             (parent->sticky_windows != NULL ||
  83              (mainwindows->next != NULL && parent->active == NULL))) {
  84                 /* set the window sticky */
  85                 parent->sticky_windows =
  86                         g_slist_append(parent->sticky_windows, window);
  87         }
  88
  89         if (parent->active == NULL) parent->active = window;
  90         window->gui_data = gui_window_init(window, parent);
  91         signal_emit("gui window created", 1, window);
  92 }
  93
  94 static void gui_window_destroyed(WINDOW_REC *window)
  95 {
  96         MAIN_WINDOW_REC *parent;
  97         GUI_WINDOW_REC *gui;
  98
  99         g_return_if_fail(window != NULL);
 100
 101         gui = WINDOW_GUI(window);
 102         parent = gui->parent;
 103
 104         signal_emit("gui window destroyed", 1, window);
 105
 106         gui_window_deinit(gui);
 107         window->gui_data = NULL;
 108
 109         if (parent->active == window && mainwindows->next != NULL)
 110                 mainwindow_destroy(parent);
 111 }
 112
 113 void gui_window_resize(WINDOW_REC *window, int width, int height)
 114 {
 115         GUI_WINDOW_REC *gui;
 116
 117         gui = WINDOW_GUI(window);
 118
 119         window->width = width;
 120         window->height = height;
 121         textbuffer_view_resize(gui->view, width, height);
 122 }
 123
 124 void gui_window_scroll(WINDOW_REC *window, int lines)
 125 {
 126         g_return_if_fail(window != NULL);
 127
 128         textbuffer_view_scroll(WINDOW_GUI(window)->view, lines);
 129         signal_emit("gui page scrolled", 1, window);
 130 }
 131
 132 void gui_window_scroll_line(WINDOW_REC *window, LINE_REC *line)
 133 {
 134         g_return_if_fail(window != NULL);
 135         g_return_if_fail(line != NULL);
 136
 137         textbuffer_view_scroll_line(WINDOW_GUI(window)->view, line);
 138         signal_emit("gui page scrolled", 1, window);
 139 }
 140
 141 void window_update_prompt(void)
 142 {
 143         const char *special;
 144         char *prompt, *text;
 145         int var_used;
 146
 147         special = settings_get_str(active_win->active != NULL ?
 148                                    "prompt" : "prompt_window");
 149         if (*special == '\0') {
 150                 gui_entry_set_prompt("");
 151                 return;
 152         }
 153
 154         prompt = parse_special_string(special, active_win->active_server,
 155                                       active_win->active, "", &var_used,
 156                                       PARSE_FLAG_ISSET_ANY |
 157                                       PARSE_FLAG_ESCAPE_VARS);
 158         if (!var_used && strchr(special, '$') != NULL) {
 159                 /* none of the $vars had non-empty values, use empty prompt */
 160                 *prompt = '\0';
 161         }
 162
 163         /* set prompt */
 164         text = show_lowascii(prompt);
 165         gui_entry_set_prompt(text);
 166         g_free(text);
 167
 168         g_free(prompt);
 169 }
 170
 171 static void window_update_prompt_server(SERVER_REC *server)
 172 {
 173         if (server == active_win->active_server)
 174                 window_update_prompt();
 175 }
 176
 177 static void window_update_prompt_window(WINDOW_REC *window)
 178 {
 179         if (window == active_win)
 180                 window_update_prompt();
 181 }
 182
 183 static void window_update_prompt_window_item(WI_ITEM_REC *item)
 184 {
 185         if (item == active_win->active)
 186                 window_update_prompt();
 187 }
 188
 189 void gui_window_reparent(WINDOW_REC *window, MAIN_WINDOW_REC *parent)
 190 {
 191         MAIN_WINDOW_REC *oldparent;
 192
 193         oldparent = WINDOW_GUI(window)->parent;
 194         if (oldparent == parent)
 195                 return;
 196
 197         textbuffer_view_set_window(WINDOW_GUI(window)->view, NULL);
 198
 199         WINDOW_GUI(window)->parent = parent;
 200         if (parent->height != oldparent->height ||
 201             parent->width != oldparent->width)
 202                 gui_window_resize(window, parent->width, parent->height);
 203 }
 204
 205 static MAIN_WINDOW_REC *mainwindow_find_unsticky(void)
 206 {
 207         GSList *tmp;
 208
 209         for (tmp = mainwindows; tmp != NULL; tmp = tmp->next) {
 210                 MAIN_WINDOW_REC *rec = tmp->data;
 211
 212                 if (rec->sticky_windows == NULL)
 213                         return rec;
 214         }
 215
 216         /* all windows are sticky, fallback to active window */
 217         return active_mainwin;
 218 }
 219
 220 static void signal_window_changed(WINDOW_REC *window, WINDOW_REC *old_window)
 221 {
 222         MAIN_WINDOW_REC *parent;
 223
 224         g_return_if_fail(window != NULL);
 225
 226         if (quitting) return;
 227
 228         parent = WINDOW_GUI(window)->parent;
 229         if (is_window_visible(window)) {
 230                 /* already visible */
 231                 active_mainwin = parent;
 232         } else if (active_mainwin == NULL) {
 233                 /* no main window set yet */
 234                 active_mainwin = parent;
 235         } else if (g_slist_find(parent->sticky_windows, window) != NULL) {
 236                 /* window is sticky, switch to correct main window */
 237                 if (parent != active_mainwin)
 238                         active_mainwin = parent;
 239         } else {
 240                 /* move window to active main window */
 241                 if (active_mainwin->sticky_windows != NULL) {
 242                         /* active mainwindow is sticky, we'll need to
 243                            set the window active somewhere else */
 244                         active_mainwin = mainwindow_find_unsticky();
 245                 }
 246                 gui_window_reparent(window, active_mainwin);
 247         }
 248         active_mainwin->active = window;
 249
 250         if (old_window != NULL && !is_window_visible(old_window))
 251                 textbuffer_view_set_window(WINDOW_GUI(old_window)->view, NULL);
 252
 253         textbuffer_view_set_window(WINDOW_GUI(window)->view,
 254                                    parent->curses_win);
 255
 256         window_update_prompt();
 257 }
 258
 259 static void sig_check_window_update(WINDOW_REC *window)
 260 {
 261         if (window == active_win)
 262                 window_update_prompt();
 263 }
 264
 265 static void read_settings(void)
 266 {
 267         GSList *tmp;
 268
 269         SIGNAL_FUNC funcs[] = {
 270                 (SIGNAL_FUNC) window_update_prompt,
 271                 (SIGNAL_FUNC) window_update_prompt_server,
 272                 (SIGNAL_FUNC) window_update_prompt_window,
 273                 (SIGNAL_FUNC) window_update_prompt_window_item
 274         };
 275
 276         if (prompt != NULL) {
 277                 special_vars_remove_signals(prompt, 4, funcs);
 278                 special_vars_remove_signals(prompt_window, 4, funcs);
 279                 g_free(prompt);
 280                 g_free(prompt_window);
 281         }
 282         prompt = g_strdup(settings_get_str("prompt"));
 283         prompt_window = g_strdup(settings_get_str("prompt_window"));
 284
 285         for (tmp = windows; tmp != NULL; tmp = tmp->next) {
 286                 WINDOW_REC *rec = tmp->data;
 287
 288                 textbuffer_view_set_default_indent(WINDOW_GUI(rec)->view,
 289                                                    settings_get_int("indent"),
 290                                                    settings_get_bool("indent_always"));
 291         }
 292
 293         special_vars_add_signals(prompt, 4, funcs);
 294         special_vars_add_signals(prompt_window, 4, funcs);
 295
 296         if (active_win != NULL) window_update_prompt();
 297 }
 298
 299 void gui_windows_init(void)
 300 {
 301         settings_add_bool("lookandfeel", "autostick_split_windows", TRUE);
 302         settings_add_int("lookandfeel", "indent", 10);
 303         settings_add_bool("lookandfeel", "indent_always", FALSE);
 304         settings_add_str("lookandfeel", "prompt", "[$[.15]T] ");
 305         settings_add_str("lookandfeel", "prompt_window", "[$winname] ");
 306
 307         prompt = NULL; prompt_window = NULL;
 308         window_create_override = -1;
 309
 310         read_settings();
 311         signal_add("gui window create override", (SIGNAL_FUNC) sig_window_create_override);
 312         signal_add("window created", (SIGNAL_FUNC) gui_window_created);
 313         signal_add("window destroyed", (SIGNAL_FUNC) gui_window_destroyed);
 314         signal_add_first("window changed", (SIGNAL_FUNC) signal_window_changed);
 315         signal_add("window item remove", (SIGNAL_FUNC) sig_check_window_update);
 316         signal_add("setup changed", (SIGNAL_FUNC) read_settings);
 317 }
 318
 319 void gui_windows_deinit(void)
 320 {
 321         g_free_not_null(prompt);
 322         g_free_not_null(prompt_window);
 323
 324         while (windows != NULL)
 325                 window_destroy(windows->data);
 326
 327         signal_remove("gui window create override", (SIGNAL_FUNC) sig_window_create_override);
 328         signal_remove("window created", (SIGNAL_FUNC) gui_window_created);
 329         signal_remove("window destroyed", (SIGNAL_FUNC) gui_window_destroyed);
 330         signal_remove("window changed", (SIGNAL_FUNC) signal_window_changed);
 331         signal_remove("window item remove", (SIGNAL_FUNC) sig_check_window_update);
 332         signal_remove("setup changed", (SIGNAL_FUNC) read_settings);
 333 }