631 lines
15 KiB
C
631 lines
15 KiB
C
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/* Public Domain Curses */
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#include <curspriv.h>
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RCSID("$Id: panel.c,v 1.8 2008/07/14 12:35:23 wmcbrine Exp $")
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/*man-start**************************************************************
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Name: panel
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Synopsis:
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int bottom_panel(PANEL *pan);
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int del_panel(PANEL *pan);
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int hide_panel(PANEL *pan);
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int move_panel(PANEL *pan, int starty, int startx);
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PANEL *new_panel(WINDOW *win);
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PANEL *panel_above(const PANEL *pan);
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PANEL *panel_below(const PANEL *pan);
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int panel_hidden(const PANEL *pan);
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const void *panel_userptr(const PANEL *pan);
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WINDOW *panel_window(const PANEL *pan);
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int replace_panel(PANEL *pan, WINDOW *win);
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int set_panel_userptr(PANEL *pan, const void *uptr);
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int show_panel(PANEL *pan);
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int top_panel(PANEL *pan);
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void update_panels(void);
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Description:
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The panel library is built using the curses library, and any
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program using panels routines must call one of the curses
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initialization routines such as initscr(). A program using these
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routines must be linked with the panels and curses libraries.
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The header <panel.h> includes the header <curses.h>.
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The panels package gives the applications programmer a way to
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have depth relationships between curses windows; a curses window
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is associated with every panel. The panels routines allow curses
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windows to overlap without making visible the overlapped
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portions of underlying windows. The initial curses window,
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stdscr, lies beneath all panels. The set of currently visible
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panels is the 'deck' of panels.
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The panels package allows the applications programmer to create
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panels, fetch and set their associated windows, shuffle panels
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in the deck, and manipulate panels in other ways.
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bottom_panel() places pan at the bottom of the deck. The size,
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location and contents of the panel are unchanged.
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del_panel() deletes pan, but not its associated winwow.
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hide_panel() removes a panel from the deck and thus hides it
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from view.
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move_panel() moves the curses window associated with pan, so
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that its upper lefthand corner is at the supplied coordinates.
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(Do not use mvwin() on the window.)
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new_panel() creates a new panel associated with win and returns
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the panel pointer. The new panel is placed at the top of the
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deck.
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panel_above() returns a pointer to the panel in the deck above
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pan, or NULL if pan is the top panel. If the value of pan passed
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is NULL, this function returns a pointer to the bottom panel in
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the deck.
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panel_below() returns a pointer to the panel in the deck below
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pan, or NULL if pan is the bottom panel. If the value of pan
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passed is NULL, this function returns a pointer to the top panel
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in the deck.
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panel_hidden() returns OK if pan is hidden and ERR if it is not.
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panel_userptr() - Each panel has a user pointer available for
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maintaining relevant information. This function returns a
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pointer to that information previously set up by
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set_panel_userptr().
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panel_window() returns a pointer to the curses window associated
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with the panel.
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replace_panel() replaces the current window of pan with win.
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set_panel_userptr() - Each panel has a user pointer available
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for maintaining relevant information. This function sets the
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value of that information.
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show_panel() makes a previously hidden panel visible and places
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it back in the deck on top.
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top_panel() places pan on the top of the deck. The size,
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location and contents of the panel are unchanged.
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update_panels() refreshes the virtual screen to reflect the
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depth relationships between the panels in the deck. The user
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must use doupdate() to refresh the physical screen.
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Return Value:
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Each routine that returns a pointer to an object returns NULL if
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an error occurs. Each panel routine that returns an integer,
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returns OK if it executes successfully and ERR if it does not.
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Portability X/Open BSD SYS V
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bottom_panel - - Y
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del_panel - - Y
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hide_panel - - Y
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move_panel - - Y
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new_panel - - Y
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panel_above - - Y
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panel_below - - Y
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panel_hidden - - Y
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panel_userptr - - Y
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panel_window - - Y
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replace_panel - - Y
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set_panel_userptr - - Y
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show_panel - - Y
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top_panel - - Y
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update_panels - - Y
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Credits:
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Original Author - Warren Tucker <wht@n4hgf.mt-park.ga.us>
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**man-end****************************************************************/
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#include <panel.h>
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#include <stdlib.h>
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PANEL *_bottom_panel = (PANEL *)0;
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PANEL *_top_panel = (PANEL *)0;
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PANEL _stdscr_pseudo_panel = { (WINDOW *)0 };
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#ifdef PANEL_DEBUG
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static void dPanel(char *text, PANEL *pan)
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{
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PDC_LOG(("%s id=%s b=%s a=%s y=%d x=%d", text, pan->user,
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pan->below ? pan->below->user : "--",
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pan->above ? pan->above->user : "--",
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pan->wstarty, pan->wstartx));
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}
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static void dStack(char *fmt, int num, PANEL *pan)
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{
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char s80[80];
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sprintf(s80, fmt, num, pan);
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PDC_LOG(("%s b=%s t=%s", s80, _bottom_panel ? _bottom_panel->user : "--",
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_top_panel ? _top_panel->user : "--"));
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if (pan)
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PDC_LOG(("pan id=%s", pan->user));
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pan = _bottom_panel;
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while (pan)
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{
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dPanel("stk", pan);
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pan = pan->above;
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}
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}
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/* debugging hook for wnoutrefresh */
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static void Wnoutrefresh(PANEL *pan)
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{
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dPanel("wnoutrefresh", pan);
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wnoutrefresh(pan->win);
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}
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static void Touchpan(PANEL *pan)
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{
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dPanel("Touchpan", pan);
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touchwin(pan->win);
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}
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static void Touchline(PANEL *pan, int start, int count)
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{
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char s80[80];
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sprintf(s80, "Touchline s=%d c=%d", start, count);
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dPanel(s80, pan);
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touchline(pan->win, start, count);
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}
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#else /* PANEL_DEBUG */
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#define dPanel(text, pan)
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#define dStack(fmt, num, pan)
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#define Wnoutrefresh(pan) wnoutrefresh((pan)->win)
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#define Touchpan(pan) touchwin((pan)->win)
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#define Touchline(pan, start, count) touchline((pan)->win, start, count)
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#endif /* PANEL_DEBUG */
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static bool _panels_overlapped(PANEL *pan1, PANEL *pan2)
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{
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if (!pan1 || !pan2)
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return FALSE;
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return ((pan1->wstarty >= pan2->wstarty && pan1->wstarty < pan2->wendy)
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|| (pan2->wstarty >= pan1->wstarty && pan2->wstarty < pan1->wendy))
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&& ((pan1->wstartx >= pan2->wstartx && pan1->wstartx < pan2->wendx)
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|| (pan2->wstartx >= pan1->wstartx && pan2->wstartx < pan1->wendx));
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}
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static void _free_obscure(PANEL *pan)
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{
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PANELOBS *tobs = pan->obscure; /* "this" one */
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PANELOBS *nobs; /* "next" one */
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while (tobs)
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{
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nobs = tobs->above;
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free((char *)tobs);
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tobs = nobs;
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}
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pan->obscure = (PANELOBS *)0;
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}
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static void _override(PANEL *pan, int show)
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{
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int y;
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PANEL *pan2;
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PANELOBS *tobs = pan->obscure; /* "this" one */
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if (show == 1)
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Touchpan(pan);
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else if (!show)
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{
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Touchpan(pan);
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Touchpan(&_stdscr_pseudo_panel);
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}
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else if (show == -1)
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while (tobs && (tobs->pan != pan))
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tobs = tobs->above;
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while (tobs)
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{
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if ((pan2 = tobs->pan) != pan)
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for (y = pan->wstarty; y < pan->wendy; y++)
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if ((y >= pan2->wstarty) && (y < pan2->wendy) &&
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((is_linetouched(pan->win, y - pan->wstarty)) ||
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(is_linetouched(stdscr, y))))
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Touchline(pan2, y - pan2->wstarty, 1);
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tobs = tobs->above;
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}
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}
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static void _calculate_obscure(void)
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{
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PANEL *pan, *pan2;
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PANELOBS *tobs; /* "this" one */
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PANELOBS *lobs; /* last one */
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pan = _bottom_panel;
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while (pan)
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{
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if (pan->obscure)
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_free_obscure(pan);
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lobs = (PANELOBS *)0;
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pan2 = _bottom_panel;
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while (pan2)
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{
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if (_panels_overlapped(pan, pan2))
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{
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if ((tobs = malloc(sizeof(PANELOBS))) == NULL)
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return;
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tobs->pan = pan2;
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dPanel("obscured", pan2);
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tobs->above = (PANELOBS *)0;
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if (lobs)
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lobs->above = tobs;
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else
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pan->obscure = tobs;
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lobs = tobs;
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}
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pan2 = pan2->above;
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}
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_override(pan, 1);
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pan = pan->above;
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}
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}
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/* check to see if panel is in the stack */
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static bool _panel_is_linked(const PANEL *pan)
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{
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PANEL *pan2 = _bottom_panel;
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while (pan2)
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{
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if (pan2 == pan)
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return TRUE;
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pan2 = pan2->above;
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}
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return FALSE;
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}
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/* link panel into stack at top */
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static void _panel_link_top(PANEL *pan)
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{
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#ifdef PANEL_DEBUG
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dStack("<lt%d>", 1, pan);
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if (_panel_is_linked(pan))
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return;
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#endif
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pan->above = (PANEL *)0;
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pan->below = (PANEL *)0;
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if (_top_panel)
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{
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_top_panel->above = pan;
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pan->below = _top_panel;
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}
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_top_panel = pan;
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if (!_bottom_panel)
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_bottom_panel = pan;
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_calculate_obscure();
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dStack("<lt%d>", 9, pan);
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}
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/* link panel into stack at bottom */
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static void _panel_link_bottom(PANEL *pan)
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{
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#ifdef PANEL_DEBUG
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dStack("<lb%d>", 1, pan);
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if (_panel_is_linked(pan))
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return;
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#endif
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pan->above = (PANEL *)0;
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pan->below = (PANEL *)0;
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if (_bottom_panel)
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{
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_bottom_panel->below = pan;
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pan->above = _bottom_panel;
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}
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_bottom_panel = pan;
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if (!_top_panel)
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_top_panel = pan;
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_calculate_obscure();
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dStack("<lb%d>", 9, pan);
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}
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static void _panel_unlink(PANEL *pan)
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{
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PANEL *prev;
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PANEL *next;
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#ifdef PANEL_DEBUG
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dStack("<u%d>", 1, pan);
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if (!_panel_is_linked(pan))
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return;
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#endif
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_override(pan, 0);
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_free_obscure(pan);
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prev = pan->below;
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next = pan->above;
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/* if non-zero, we will not update the list head */
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if (prev)
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{
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prev->above = next;
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if(next)
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next->below = prev;
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}
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else if (next)
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next->below = prev;
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if (pan == _bottom_panel)
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_bottom_panel = next;
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if (pan == _top_panel)
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_top_panel = prev;
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_calculate_obscure();
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|
|
|
||
|
|
pan->above = (PANEL *)0;
|
||
|
|
pan->below = (PANEL *)0;
|
||
|
|
dStack("<u%d>", 9, pan);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
/************************************************************************
|
||
|
|
* The following are the public functions for the panels library. *
|
||
|
|
************************************************************************/
|
||
|
|
|
||
|
|
int bottom_panel(PANEL *pan)
|
||
|
|
{
|
||
|
|
if (!pan)
|
||
|
|
return ERR;
|
||
|
|
|
||
|
|
if (pan == _bottom_panel)
|
||
|
|
return OK;
|
||
|
|
|
||
|
|
if (_panel_is_linked(pan))
|
||
|
|
hide_panel(pan);
|
||
|
|
|
||
|
|
_panel_link_bottom(pan);
|
||
|
|
|
||
|
|
return OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
int del_panel(PANEL *pan)
|
||
|
|
{
|
||
|
|
if (pan)
|
||
|
|
{
|
||
|
|
if (_panel_is_linked(pan))
|
||
|
|
hide_panel(pan);
|
||
|
|
|
||
|
|
free((char *)pan);
|
||
|
|
return OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
return ERR;
|
||
|
|
}
|
||
|
|
|
||
|
|
int hide_panel(PANEL *pan)
|
||
|
|
{
|
||
|
|
if (!pan)
|
||
|
|
return ERR;
|
||
|
|
|
||
|
|
if (!_panel_is_linked(pan))
|
||
|
|
{
|
||
|
|
pan->above = (PANEL *)0;
|
||
|
|
pan->below = (PANEL *)0;
|
||
|
|
return ERR;
|
||
|
|
}
|
||
|
|
|
||
|
|
_panel_unlink(pan);
|
||
|
|
|
||
|
|
return OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
int move_panel(PANEL *pan, int starty, int startx)
|
||
|
|
{
|
||
|
|
WINDOW *win;
|
||
|
|
int maxy, maxx;
|
||
|
|
|
||
|
|
if (!pan)
|
||
|
|
return ERR;
|
||
|
|
|
||
|
|
if (_panel_is_linked(pan))
|
||
|
|
_override(pan, 0);
|
||
|
|
|
||
|
|
win = pan->win;
|
||
|
|
|
||
|
|
if (mvwin(win, starty, startx) == ERR)
|
||
|
|
return ERR;
|
||
|
|
|
||
|
|
getbegyx(win, pan->wstarty, pan->wstartx);
|
||
|
|
getmaxyx(win, maxy, maxx);
|
||
|
|
pan->wendy = pan->wstarty + maxy;
|
||
|
|
pan->wendx = pan->wstartx + maxx;
|
||
|
|
|
||
|
|
if (_panel_is_linked(pan))
|
||
|
|
_calculate_obscure();
|
||
|
|
|
||
|
|
return OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
PANEL *new_panel(WINDOW *win)
|
||
|
|
{
|
||
|
|
PANEL *pan = malloc(sizeof(PANEL));
|
||
|
|
|
||
|
|
if (!_stdscr_pseudo_panel.win)
|
||
|
|
{
|
||
|
|
_stdscr_pseudo_panel.win = stdscr;
|
||
|
|
_stdscr_pseudo_panel.wstarty = 0;
|
||
|
|
_stdscr_pseudo_panel.wstartx = 0;
|
||
|
|
_stdscr_pseudo_panel.wendy = LINES;
|
||
|
|
_stdscr_pseudo_panel.wendx = COLS;
|
||
|
|
_stdscr_pseudo_panel.user = "stdscr";
|
||
|
|
_stdscr_pseudo_panel.obscure = (PANELOBS *)0;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (pan)
|
||
|
|
{
|
||
|
|
int maxy, maxx;
|
||
|
|
|
||
|
|
pan->win = win;
|
||
|
|
pan->above = (PANEL *)0;
|
||
|
|
pan->below = (PANEL *)0;
|
||
|
|
getbegyx(win, pan->wstarty, pan->wstartx);
|
||
|
|
getmaxyx(win, maxy, maxx);
|
||
|
|
pan->wendy = pan->wstarty + maxy;
|
||
|
|
pan->wendx = pan->wstartx + maxx;
|
||
|
|
#ifdef PANEL_DEBUG
|
||
|
|
pan->user = "new";
|
||
|
|
#else
|
||
|
|
pan->user = (char *)0;
|
||
|
|
#endif
|
||
|
|
pan->obscure = (PANELOBS *)0;
|
||
|
|
show_panel(pan);
|
||
|
|
}
|
||
|
|
|
||
|
|
return pan;
|
||
|
|
}
|
||
|
|
|
||
|
|
PANEL *panel_above(const PANEL *pan)
|
||
|
|
{
|
||
|
|
return pan ? pan->above : _bottom_panel;
|
||
|
|
}
|
||
|
|
|
||
|
|
PANEL *panel_below(const PANEL *pan)
|
||
|
|
{
|
||
|
|
return pan ? pan->below : _top_panel;
|
||
|
|
}
|
||
|
|
|
||
|
|
int panel_hidden(const PANEL *pan)
|
||
|
|
{
|
||
|
|
if (!pan)
|
||
|
|
return ERR;
|
||
|
|
|
||
|
|
return _panel_is_linked(pan) ? ERR : OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
const void *panel_userptr(const PANEL *pan)
|
||
|
|
{
|
||
|
|
return pan ? pan->user : NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
WINDOW *panel_window(const PANEL *pan)
|
||
|
|
{
|
||
|
|
PDC_LOG(("panel_window() - called\n"));
|
||
|
|
|
||
|
|
return pan->win;
|
||
|
|
}
|
||
|
|
|
||
|
|
int replace_panel(PANEL *pan, WINDOW *win)
|
||
|
|
{
|
||
|
|
int maxy, maxx;
|
||
|
|
|
||
|
|
if (!pan)
|
||
|
|
return ERR;
|
||
|
|
|
||
|
|
if (_panel_is_linked(pan))
|
||
|
|
_override(pan, 0);
|
||
|
|
|
||
|
|
pan->win = win;
|
||
|
|
getbegyx(win, pan->wstarty, pan->wstartx);
|
||
|
|
getmaxyx(win, maxy, maxx);
|
||
|
|
pan->wendy = pan->wstarty + maxy;
|
||
|
|
pan->wendx = pan->wstartx + maxx;
|
||
|
|
|
||
|
|
if (_panel_is_linked(pan))
|
||
|
|
_calculate_obscure();
|
||
|
|
|
||
|
|
return OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
int set_panel_userptr(PANEL *pan, const void *uptr)
|
||
|
|
{
|
||
|
|
if (!pan)
|
||
|
|
return ERR;
|
||
|
|
|
||
|
|
pan->user = uptr;
|
||
|
|
return OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
int show_panel(PANEL *pan)
|
||
|
|
{
|
||
|
|
if (!pan)
|
||
|
|
return ERR;
|
||
|
|
|
||
|
|
if (pan == _top_panel)
|
||
|
|
return OK;
|
||
|
|
|
||
|
|
if (_panel_is_linked(pan))
|
||
|
|
hide_panel(pan);
|
||
|
|
|
||
|
|
_panel_link_top(pan);
|
||
|
|
|
||
|
|
return OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
int top_panel(PANEL *pan)
|
||
|
|
{
|
||
|
|
return show_panel(pan);
|
||
|
|
}
|
||
|
|
|
||
|
|
void update_panels(void)
|
||
|
|
{
|
||
|
|
PANEL *pan;
|
||
|
|
|
||
|
|
PDC_LOG(("update_panels() - called\n"));
|
||
|
|
|
||
|
|
pan = _bottom_panel;
|
||
|
|
|
||
|
|
while (pan)
|
||
|
|
{
|
||
|
|
_override(pan, -1);
|
||
|
|
pan = pan->above;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (is_wintouched(stdscr))
|
||
|
|
Wnoutrefresh(&_stdscr_pseudo_panel);
|
||
|
|
|
||
|
|
pan = _bottom_panel;
|
||
|
|
|
||
|
|
while (pan)
|
||
|
|
{
|
||
|
|
if (is_wintouched(pan->win) || !pan->above)
|
||
|
|
Wnoutrefresh(pan);
|
||
|
|
|
||
|
|
pan = pan->above;
|
||
|
|
}
|
||
|
|
}
|