mirror of
https://git.zap.org.au/git/trader.git
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Add simple functions to manage a stack of Curses windows
This commit is contained in:
John Zaitseff
parent
2a3e18460e
commit
4f62ef1b58
177
src/intf.c
177
src/intf.c
@ -33,6 +33,35 @@
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#include "utils.h"
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/************************************************************************
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* Module constants and type declarations *
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************************************************************************/
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#define OUTBUFSIZE (1024) /* Output string buffer size */
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typedef struct txwin {
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WINDOW *win; // Pointer to window structure
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struct txwin *next; // Next window in stack
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struct txwin *prev; // Previous window in stack
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} txwin_t;
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/************************************************************************
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* Global variable definitions *
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************************************************************************/
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WINDOW *curwin = NULL; // Top-most (current) window
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/************************************************************************
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* Module variables *
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************************************************************************/
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txwin_t *topwin = NULL; // Top-most txwin structure
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txwin_t *firstwin = NULL; // First (bottom-most) txwin structure
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/************************************************************************
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* Basic text input/output function definitions *
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************************************************************************/
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@ -56,6 +85,10 @@ void init_screen (void)
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MIN_COLS, MIN_LINES);
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}
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curwin = stdscr;
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topwin = NULL;
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firstwin = NULL;
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noecho();
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curs_set(CURS_INVISIBLE);
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raw();
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@ -95,9 +128,153 @@ void init_screen (void)
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void end_screen (void)
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{
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delalltxwin();
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clear();
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refresh();
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endwin();
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curwin = NULL;
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}
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/*-----------------------------------------------------------------------
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Function: newtxwin - Create a new window, inserted into window stack
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Arguments: nlines - Number of lines in new window
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ncols - Number of columns in new window
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begin_y - Starting line number (global coordinates)
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begin_x - Starting column number (global coordinates)
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Returns: WINDOW * - Pointer to new window structure
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This function creates a window (using the Curses newwin() function) and
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places it top-most in the stack of windows managed by this module. A
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pointer to the new window is returned; the global variable "curwin"
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also points to this new window. Please note that wrefresh() is NOT
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called on the new window.
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*/
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WINDOW *newtxwin (int nlines, int ncols, int begin_y, int begin_x)
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{
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WINDOW *win;
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txwin_t *nw;
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win = newwin(nlines, ncols, begin_y, begin_x);
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if (win == NULL) {
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return NULL;
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}
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nw = malloc(sizeof(txwin_t));
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if (nw == NULL) {
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delwin(win);
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return NULL;
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}
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nw->win = win;
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nw->next = NULL;
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nw->prev = topwin;
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if (topwin != NULL) {
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topwin->next = nw;
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}
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topwin = nw;
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curwin = win;
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if (firstwin == NULL) {
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firstwin = nw;
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}
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return win;
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}
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/*-----------------------------------------------------------------------
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Function: deltxwin - Delete the top-most window in window stack
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Arguments: (none)
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Returns: int - OK if all well, ERR if not
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This function deletes the top-most window in the stack of windows
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managed by this module. ERR is returned if there is no such window, or
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if delwin() fails. Please note that the actual screen is NOT
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refreshed: a call to txrefresh() should follow this one. This allows
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multiple windows to be deleted without screen flashing.
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*/
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int deltxwin (void)
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{
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txwin_t *cur, *prev;
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int r;
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if (topwin == NULL) {
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return ERR;
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}
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cur = topwin;
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prev = topwin->prev;
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topwin = prev;
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if (prev != NULL) {
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prev->next = NULL;
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curwin = prev->win;
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} else {
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firstwin = NULL;
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curwin = stdscr;
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}
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r = delwin(cur->win);
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free(cur);
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return r;
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}
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/*-----------------------------------------------------------------------
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Function: delalltxwin - Delete all windows in the window stack
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Arguments: (none)
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Returns: int - OK is always returned
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This function deletes all windows in the stack of windows managed by
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this module. After calling this function, the global variable "curwin"
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points to "stdscr", the only window for which output is now permitted.
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Please note that the screen is NOT refreshed; a call to txrefresh()
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should follow this one if appropriate.
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*/
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int delalltxwin (void)
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{
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while (topwin != NULL) {
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deltxwin();
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}
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return OK;
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}
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/*-----------------------------------------------------------------------
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Function: txrefresh - Redraw all windows in the window stack
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Arguments: (none)
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Returns: int - OK if all well, ERR if not
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This function redraws (refreshes) all windows in the stack of windows
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managed by this module. Windows are refreshed from bottom (first) to
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top (last). The result of doupdate() is returned.
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*/
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int txrefresh (void)
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{
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txwin_t *p;
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touchwin(stdscr);
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wnoutrefresh(stdscr);
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for (p = firstwin; p != NULL; p = p->next) {
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touchwin(p->win);
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wnoutrefresh(p->win);
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}
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return doupdate();
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}
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15
src/intf.h
15
src/intf.h
@ -54,8 +54,6 @@
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#define COL_OFFSET ((COLS - MIN_COLS) / 2) /* Window offsets */
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#define LINE_OFFSET (0)
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#define OUTBUFSIZE (1024) /* Output string buffer size */
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// Colour pairs used in Star Traders
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enum color_pairs {
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@ -68,6 +66,13 @@ enum color_pairs {
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};
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/************************************************************************
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* Global variable declarations *
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************************************************************************/
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extern WINDOW *curwin; // Top-most (current) window
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/************************************************************************
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* Basic text input/output function declarations *
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************************************************************************/
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@ -75,6 +80,12 @@ enum color_pairs {
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extern void init_screen (void);
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extern void end_screen (void);
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// Simplified panel-like window functions
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extern WINDOW *newtxwin (int nlines, int ncols, int begin_y, int begin_x);
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extern int deltxwin (void);
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extern int delalltxwin (void);
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extern int txrefresh (void);
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extern int center (WINDOW *win, const bool clrline, const char *format, ...)
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__attribute__((format (printf, 3, 4)));
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60
src/trader.c
60
src/trader.c
@ -64,56 +64,60 @@ int main (int argc, char *argv[])
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// Testing...
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init_screen();
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printw("Program name: %s\n", program_name());
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printw("Home directory: %s\n", home_directory());
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printw("Data directory: %s\n", data_directory());
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printw("Game filename: %s (%d)\n", game_filename(game_num), game_num);
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wprintw(curwin, "Program name: %s\n", program_name());
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wprintw(curwin, "Home directory: %s\n", home_directory());
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wprintw(curwin, "Data directory: %s\n", data_directory());
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wprintw(curwin, "Game filename: %s (%d)\n", game_filename(game_num), game_num);
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printw("Cols x Lines: %d x %d\n", COLS, LINES);
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printw("Colours, pairs: %d, %d\n", COLORS, COLOR_PAIRS);
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wprintw(curwin, "Cols x Lines: %d x %d\n", COLS, LINES);
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wprintw(curwin, "Colours, pairs: %d, %d\n", COLORS, COLOR_PAIRS);
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refresh();
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wrefresh(curwin);
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curs_set(CURS_VERYVISIBLE);
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WINDOW *w1, *w2;
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newtxwin(WIN_LINES - 7, WIN_COLS, LINE_OFFSET + 7, COL_OFFSET + 0);
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wbkgd(curwin, COLOR_PAIR(WHITE_ON_BLUE));
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box(curwin, 0, 0);
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wrefresh(curwin);
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w1 = newwin(WIN_LINES - 7, WIN_COLS, LINE_OFFSET + 7, COL_OFFSET + 0);
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wbkgd(w1, COLOR_PAIR(WHITE_ON_BLUE));
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box(w1, 0, 0);
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wrefresh(w1);
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newtxwin(WIN_LINES - 9, WIN_COLS - 8, LINE_OFFSET + 8, COL_OFFSET + 4);
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wbkgd(curwin, COLOR_PAIR(WHITE_ON_BLUE));
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w2 = newwin(WIN_LINES - 9, WIN_COLS - 8, LINE_OFFSET + 8, COL_OFFSET + 4);
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wbkgd(w2, COLOR_PAIR(WHITE_ON_BLUE));
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wattrset(curwin, has_colors() ? COLOR_PAIR(WHITE_ON_RED) | A_BOLD : A_REVERSE | A_BOLD);
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center(curwin, true, "Type some keys (^C to exit):");
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wattrset(curwin, A_NORMAL);
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wattrset(w2, has_colors() ? COLOR_PAIR(WHITE_ON_RED) | A_BOLD : A_REVERSE | A_BOLD);
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center(w2, true, "Type some keys (^C to exit):");
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wattrset(w2, A_NORMAL);
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wrefresh(curwin);
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wrefresh(w2);
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scrollok(w2, true);
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keypad(w2, true);
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meta(w2, true);
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wtimeout(w2, -1);
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scrollok(curwin, true);
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keypad(curwin, true);
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meta(curwin, true);
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wtimeout(curwin, -1);
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int c = 0;
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while ((c = wgetch(w2)) != 3) {
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while ((c = wgetch(curwin)) != 3) {
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if ((c >= 0) && (c < 32)) {
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wprintw(w2, "0%03o ^%c ", c, c + '@');
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wprintw(curwin, "0%03o ^%c ", c, c + '@');
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} else if ((c >= 32) && (c < 127)) {
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wprintw(w2, "0%03o %c ", c, c);
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wprintw(curwin, "0%03o %c ", c, c);
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} else {
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wprintw(w2, "0%05o ", c);
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wprintw(curwin, "0%05o ", c);
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}
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if (c == 0x1C) {
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err_exit("You pressed ^%c!", c + '@');
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}
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wrefresh(w2);
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wrefresh(curwin);
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}
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deltxwin();
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txrefresh();
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mvwprintw(curwin, 1, 2, "All OK: ");
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wgetch(curwin);
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end_screen();
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return EXIT_SUCCESS;
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