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Add input routines gettxchar() and getanswer(); add various macros

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In particular, add macros for KEY_TAB, KEY_RETURN and KEY_ESC, and for
CURS_ON and CURS_OFF (instead of using CURS_INVISIBLE and CURS_VISIBLE
directly: this allows redefining CURS_ON to be CURS_NORMAL).  Add more
colour pairs.
This commit is contained in:
John Zaitseff 2011-07-04 22:02:01 +10:00
parent 568c3738b2
commit ad4ed4d744
2 changed files with 100 additions and 7 deletions
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91
src/intf.c
View File

@ -66,7 +66,6 @@ txwin_t *firstwin = NULL; // First (bottom-most) txwin structure
* Basic text input/output function definitions *
************************************************************************/
/*-----------------------------------------------------------------------
Function: init_screen - Initialise the screen (terminal)
Arguments: (none)
@ -90,17 +89,19 @@ void init_screen (void)
firstwin = NULL;
noecho();
curs_set(CURS_INVISIBLE);
curs_set(CURS_OFF);
raw();
if (has_colors()) {
start_color();
init_pair(WHITE_ON_BLACK, COLOR_WHITE, COLOR_BLACK);
init_pair(WHITE_ON_BLUE, COLOR_WHITE, COLOR_BLUE);
init_pair(YELLOW_ON_CYAN, COLOR_YELLOW, COLOR_CYAN);
init_pair(WHITE_ON_RED, COLOR_WHITE, COLOR_RED);
init_pair(BLACK_ON_WHITE, COLOR_BLACK, COLOR_WHITE);
init_pair(WHITE_ON_BLACK, COLOR_WHITE, COLOR_BLACK);
init_pair(WHITE_ON_BLUE, COLOR_WHITE, COLOR_BLUE);
init_pair(WHITE_ON_RED, COLOR_WHITE, COLOR_RED);
init_pair(YELLOW_ON_BLACK, COLOR_YELLOW, COLOR_BLACK);
init_pair(YELLOW_ON_BLUE, COLOR_YELLOW, COLOR_BLUE);
init_pair(YELLOW_ON_CYAN, COLOR_YELLOW, COLOR_CYAN);
init_pair(BLACK_ON_WHITE, COLOR_BLACK, COLOR_WHITE);
bkgd(COLOR_PAIR(WHITE_ON_BLACK));
}
@ -136,6 +137,10 @@ void end_screen (void)
}
/************************************************************************
* Simplified panel-like window functions *
************************************************************************/
/*-----------------------------------------------------------------------
Function: newtxwin - Create a new window, inserted into window stack
Arguments: nlines - Number of lines in new window
@ -277,6 +282,10 @@ int txrefresh (void)
}
/************************************************************************
* Output routines *
************************************************************************/
/*-----------------------------------------------------------------------
Function: center - Centre a string on the current line
Arguments: win - Window to use
@ -370,3 +379,71 @@ int attrpr (WINDOW *win, int attr_start, int attr_end, const char *format, ...)
return ret;
}
/************************************************************************
* Input routines *
************************************************************************/
/*-----------------------------------------------------------------------
Function: gettxchar - Read a keyboard character
Arguments: win - Window to use
Returns: int - Keyboard character
This function reads a single character from the keyboard. The key is
NOT echoed to the screen and the cursor visibility is NOT affected.
*/
int gettxchar (WINDOW *win)
{
keypad(win, true);
meta(win, true);
wtimeout(win, -1);
return wgetch(win);
}
/*-----------------------------------------------------------------------
Function: getanswer - Read a Yes/No answer and return true/false
Arguments: win - Window to use
Returns: bool - true if Yes ("Y") was selected, else false
This function waits for either "Y" or "N" to be pressed on the
keyboard. If "Y" was pressed, "Yes." is printed and true is returned.
If "N" was pressed, "No." is printed and false is returned. Note that
the cursor becomes invisible after this function.
*/
bool getanswer (WINDOW *win)
{
int key;
bool ok;
keypad(win, true);
meta(win, true);
wtimeout(win, -1);
curs_set(CURS_ON);
do {
key = toupper(wgetch(win));
ok = ((key == 'Y') || (key == 'N'));
if (! ok) {
beep();
}
} while (! ok);
curs_set(CURS_OFF);
if (key == 'Y') {
wprintw(win, "Yes.");
} else {
wprintw(win, "No.");
}
wrefresh(win);
return (key == 'Y');
}

16
src/intf.h
View File

@ -46,6 +46,15 @@ typedef enum curs_type {
CURS_VISIBLE = 2
} curs_type_t;
#define CURS_OFF (CURS_INVISIBLE)
#define CURS_ON (CURS_VISIBLE)
// Keycodes
#define KEY_TAB (011)
#define KEY_RETURN (012)
#define KEY_ESC (033)
/*
This version of Star Traders only utilises WIN_COLS x WIN_LINES of a
@ -74,6 +83,8 @@ enum color_pairs {
WHITE_ON_BLACK,
WHITE_ON_BLUE,
WHITE_ON_RED,
YELLOW_ON_BLACK,
YELLOW_ON_BLUE,
YELLOW_ON_CYAN,
BLACK_ON_WHITE,
};
@ -110,5 +121,10 @@ extern int attrpr (WINDOW *win, int attr_start, int attr_end,
const char *format, ...)
__attribute__((format (printf, 4, 5)));
// Input routines
extern int gettxchar (WINDOW *win);
extern bool getanswer (WINDOW *win);
#endif /* included_INTF_H */