From ffccd5b2b05243e7976db80f90f453dccfae9886 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 15 Apr 2024 22:22:03 +0200 Subject: Adding upstream version 3:4.8.30. Signed-off-by: Daniel Baumann --- lib/widget/dialog-switch.c | 409 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 409 insertions(+) create mode 100644 lib/widget/dialog-switch.c (limited to 'lib/widget/dialog-switch.c') diff --git a/lib/widget/dialog-switch.c b/lib/widget/dialog-switch.c new file mode 100644 index 0000000..959cbf9 --- /dev/null +++ b/lib/widget/dialog-switch.c @@ -0,0 +1,409 @@ +/* + Support of multiply editors and viewers. + + Original idea and code: Oleg "Olegarch" Konovalov + + Copyright (C) 2009-2023 + Free Software Foundation, Inc. + + Written by: + Daniel Borca , 2007 + Andrew Borodin , 2010-2022 + + This file is part of the Midnight Commander. + + The Midnight Commander 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 3 of the License, + or (at your option) any later version. + + The Midnight Commander 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, see . + */ + +/** \file dialog-switch.c + * \brief Source: support of multiply editors and viewers. + */ + +#include + +#include "lib/global.h" +#include "lib/tty/tty.h" /* LINES, COLS */ +#include "lib/tty/color.h" /* tty_set_normal_attrs() */ +#include "lib/widget.h" +#include "lib/event.h" + +/*** global variables ****************************************************************************/ + +/* Primitive way to check if the the current dialog is our dialog */ +/* This is needed by async routines like load_prompt */ +GList *top_dlg = NULL; + +/* If set then dialogs just clean the screen when refreshing, else */ +/* they do a complete refresh, refreshing all the parts of the program */ +gboolean fast_refresh = FALSE; + +WDialog *filemanager = NULL; + +/*** file scope macro definitions ****************************************************************/ + +/*** file scope type declarations ****************************************************************/ + +/*** forward declarations (file scope functions) *************************************************/ + +/*** file scope variables ************************************************************************/ + +/* List of dialogs: filemanagers, editors, viewers */ +static GList *mc_dialogs = NULL; +/* Currently active dialog */ +static GList *mc_current = NULL; +/* Is there any dialogs that we have to run after returning to the manager from another dialog */ +static gboolean dialog_switch_pending = FALSE; + +/* --------------------------------------------------------------------------------------------- */ +/*** file scope functions ************************************************************************/ +/* --------------------------------------------------------------------------------------------- */ + +static unsigned char +get_hotkey (int n) +{ + return (n <= 9) ? '0' + n : 'a' + n - 10; +} + +/* --------------------------------------------------------------------------------------------- */ + +static void +dialog_switch_suspend (void *data, void *user_data) +{ + (void) user_data; + + if (data != mc_current->data) + widget_set_state (WIDGET (data), WST_SUSPENDED, TRUE); +} + +/* --------------------------------------------------------------------------------------------- */ + +static void +dialog_switch_goto (GList * dlg) +{ + if (mc_current != dlg) + { + WDialog *old = DIALOG (mc_current->data); + + mc_current = dlg; + + if (old == filemanager) + { + /* switch from panels to another dialog (editor, viewer, etc) */ + dialog_switch_pending = TRUE; + dialog_switch_process_pending (); + } + else + { + /* switch from editor, viewer, etc to another dialog */ + widget_set_state (WIDGET (old), WST_SUSPENDED, TRUE); + + if (DIALOG (dlg->data) != filemanager) + /* switch to another editor, viewer, etc */ + /* return to panels before run the required dialog */ + dialog_switch_pending = TRUE; + else + { + /* switch to panels */ + widget_set_state (WIDGET (filemanager), WST_ACTIVE, TRUE); + do_refresh (); + } + } + } +} + +/* --------------------------------------------------------------------------------------------- */ + +static void +dialog_switch_resize (WDialog * d) +{ + if (widget_get_state (WIDGET (d), WST_ACTIVE)) + send_message (d, NULL, MSG_RESIZE, 0, NULL); + else + GROUP (d)->winch_pending = TRUE; +} + +/* --------------------------------------------------------------------------------------------- */ +/*** public functions ****************************************************************************/ +/* --------------------------------------------------------------------------------------------- */ + +void +dialog_switch_add (WDialog * h) +{ + GList *dlg; + + dlg = g_list_find (mc_dialogs, h); + + if (dlg != NULL) + mc_current = dlg; + else + { + mc_dialogs = g_list_prepend (mc_dialogs, h); + mc_current = mc_dialogs; + } + + /* suspend forced all other screens */ + g_list_foreach (mc_dialogs, dialog_switch_suspend, NULL); +} + +/* --------------------------------------------------------------------------------------------- */ + +void +dialog_switch_remove (WDialog * h) +{ + GList *this; + + if (DIALOG (mc_current->data) == h) + this = mc_current; + else + this = g_list_find (mc_dialogs, h); + + mc_dialogs = g_list_delete_link (mc_dialogs, this); + + /* adjust current dialog */ + if (top_dlg != NULL) + mc_current = g_list_find (mc_dialogs, DIALOG (top_dlg->data)); + else + mc_current = mc_dialogs; + + /* resume forced the current screen */ + if (mc_current != NULL) + widget_set_state (WIDGET (mc_current->data), WST_ACTIVE, TRUE); +} + +/* --------------------------------------------------------------------------------------------- */ + +size_t +dialog_switch_num (void) +{ + return g_list_length (mc_dialogs); +} + +/* --------------------------------------------------------------------------------------------- */ + +void +dialog_switch_next (void) +{ + GList *next; + + if (mc_global.midnight_shutdown || mc_current == NULL) + return; + + next = g_list_next (mc_current); + if (next == NULL) + next = mc_dialogs; + + dialog_switch_goto (next); +} + +/* --------------------------------------------------------------------------------------------- */ + +void +dialog_switch_prev (void) +{ + GList *prev; + + if (mc_global.midnight_shutdown || mc_current == NULL) + return; + + prev = g_list_previous (mc_current); + if (prev == NULL) + prev = g_list_last (mc_dialogs); + + dialog_switch_goto (prev); +} + +/* --------------------------------------------------------------------------------------------- */ + +void +dialog_switch_list (void) +{ + const size_t dlg_num = g_list_length (mc_dialogs); + int lines, cols; + Listbox *listbox; + GList *h, *selected; + int i = 0; + + if (mc_global.midnight_shutdown || mc_current == NULL) + return; + + lines = MIN ((size_t) (LINES * 2 / 3), dlg_num); + cols = COLS * 2 / 3; + + listbox = listbox_window_new (lines, cols, _("Screens"), "[Screen selector]"); + + for (h = mc_dialogs; h != NULL; h = g_list_next (h)) + { + WDialog *dlg = DIALOG (h->data); + char *title; + + if (dlg->get_title != NULL) + title = dlg->get_title (dlg, WIDGET (listbox->list)->rect.cols - 2); + else + title = g_strdup (""); + + listbox_add_item (listbox->list, LISTBOX_APPEND_BEFORE, get_hotkey (i++), title, h, FALSE); + + g_free (title); + } + + selected = listbox_run_with_data (listbox, mc_current); + if (selected != NULL) + dialog_switch_goto (selected); +} + +/* --------------------------------------------------------------------------------------------- */ + +int +dialog_switch_process_pending (void) +{ + int ret = 0; + + while (dialog_switch_pending) + { + WDialog *h = DIALOG (mc_current->data); + Widget *wh = WIDGET (h); + + dialog_switch_pending = FALSE; + widget_set_state (wh, WST_SUSPENDED, TRUE); + ret = dlg_run (h); + if (widget_get_state (wh, WST_CLOSED)) + { + widget_destroy (wh); + + /* return to panels */ + if (mc_global.mc_run_mode == MC_RUN_FULL) + { + mc_current = g_list_find (mc_dialogs, filemanager); + mc_event_raise (MCEVENT_GROUP_FILEMANAGER, "update_panels", NULL); + } + } + } + + repaint_screen (); + + return ret; +} + +/* --------------------------------------------------------------------------------------------- */ + +void +dialog_switch_got_winch (void) +{ + GList *dlg; + + for (dlg = mc_dialogs; dlg != NULL; dlg = g_list_next (dlg)) + if (dlg != mc_current) + GROUP (dlg->data)->winch_pending = TRUE; +} + +/* --------------------------------------------------------------------------------------------- */ + +void +dialog_switch_shutdown (void) +{ + while (mc_dialogs != NULL) + { + WDialog *dlg = DIALOG (mc_dialogs->data); + + dlg_run (dlg); + widget_destroy (WIDGET (dlg)); + } +} + +/* --------------------------------------------------------------------------------------------- */ + +void +do_refresh (void) +{ + GList *d = top_dlg; + + if (fast_refresh) + { + if (d != NULL) + widget_draw (WIDGET (d->data)); + } + else + { + /* Search first fullscreen dialog */ + for (; d != NULL; d = g_list_next (d)) + if ((WIDGET (d->data)->pos_flags & WPOS_FULLSCREEN) != 0) + break; + + /* when small dialog (i.e. error message) is created first, + there is no fullscreen dialog in the stack */ + if (d == NULL) + d = g_list_last (top_dlg); + + /* back to top dialog */ + for (; d != NULL; d = g_list_previous (d)) + widget_draw (WIDGET (d->data)); + } +} + +/* --------------------------------------------------------------------------------------------- */ + +void +repaint_screen (void) +{ + do_refresh (); + tty_refresh (); +} + +/* --------------------------------------------------------------------------------------------- */ + +void +mc_refresh (void) +{ +#ifdef ENABLE_BACKGROUND + if (mc_global.we_are_background) + return; +#endif /* ENABLE_BACKGROUND */ + + if (!tty_got_winch ()) + tty_refresh (); + else + { + /* if winch was caugth, we should do not only redraw screen, but + reposition/resize all */ + dialog_change_screen_size (); + } +} + +/* --------------------------------------------------------------------------------------------- */ + +void +dialog_change_screen_size (void) +{ + GList *d; + + tty_flush_winch (); + tty_change_screen_size (); + +#ifdef HAVE_SLANG + tty_keypad (TRUE); + tty_nodelay (FALSE); +#endif + + /* Inform all suspending dialogs */ + dialog_switch_got_winch (); + + /* Inform all running dialogs from first to last */ + for (d = g_list_last (top_dlg); d != NULL; d = g_list_previous (d)) + dialog_switch_resize (DIALOG (d->data)); + + /* Now, force the redraw */ + repaint_screen (); +} + +/* --------------------------------------------------------------------------------------------- */ -- cgit v1.2.3