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/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2021-2023 Alfonso Sabato Siciliano
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _LIBBSDDIALOG_UTIL_H_
#define _LIBBSDDIALOG_UTIL_H_
#define BORDER 1
#define BORDERS (BORDER + BORDER)
#define TEXTHMARGIN 1
#define TEXTHMARGINS (TEXTHMARGIN + TEXTHMARGIN)
#define HBUTTONS 2
#define OK_LABEL "OK"
#define CANCEL_LABEL "Cancel"
/* theme util */
extern struct bsddialog_theme t;
extern bool hastermcolors;
#define MIN(a,b) (((a)<(b))?(a):(b))
#define MAX(a,b) (((a)>(b))?(a):(b))
/* debug */
#define BSDDIALOG_DEBUG(y,x,fmt, ...) do { \
mvprintw(y, x, fmt, __VA_ARGS__); \
refresh(); \
} while (0)
/* error and diagnostic */
#define RETURN_ERROR(str) do { \
set_error_string(str); \
return (BSDDIALOG_ERROR); \
} while (0)
#define RETURN_FMTERROR(fmt, ...) do { \
set_fmt_error_string(fmt, __VA_ARGS__); \
return (BSDDIALOG_ERROR); \
} while (0)
/* check ptr */
#define CHECK_PTR(p) do { \
if (p == NULL) \
RETURN_ERROR("*" #p " is NULL"); \
} while (0)
#define CHECK_ARRAY(nitem, a) do { \
if(nitem > 0 && a == NULL) \
RETURN_FMTERROR(#nitem " is %d but *" #a " is NULL", nitem); \
} while (0)
/* widget utils */
#define TEXTPAD(d, downnotext) rtextpad(d, 0, 0, 0, downnotext)
#define SCREENLINES (getmaxy(stdscr))
#define SCREENCOLS (getmaxx(stdscr))
#define CHECK_STR(s) (s == NULL ? "" : s)
#define DRAW_BUTTONS(d) do { \
draw_buttons(&d); \
wnoutrefresh(d.widget); \
} while (0)
/* internal types */
enum elevation { RAISED, LOWERED };
struct buttons {
unsigned int nbuttons;
#define MAXBUTTONS 10 /* 3left + ok + extra + cancel + help + 3 right */
const char *label[MAXBUTTONS];
bool shortcut;
wchar_t first[MAXBUTTONS];
int value[MAXBUTTONS];
int curr;
#define BUTTONVALUE(bs) bs.value[bs.curr]
unsigned int sizebutton; /* including left and right delimiters */
};
struct dialog {
bool built; /* true after the first draw_dialog() */
struct bsddialog_conf *conf; /* Checked API conf */
WINDOW *widget; /* Size and position refer to widget */
int y, x; /* Current position, API conf.[y|x]: -1, >=0 */
int rows, cols; /* API rows and cols: -1, 0, >0 */
int h, w; /* Current height and width */
const char *text; /* Checked API text, at least "" */
WINDOW *textpad; /* Fake for textbox */
struct buttons bs; /* bs.nbuttons = 0 for no buttons */
WINDOW *shadow;
};
/* error and diagnostic */
const char *get_error_string(void);
void set_error_string(const char *string);
void set_fmt_error_string(const char *fmt, ...);
/* multicolumn character string */
unsigned int strcols(const char *mbstring);
int str_props(const char *mbstring, unsigned int *cols, bool *has_multi_col);
void mvwaddwch(WINDOW *w, int y, int x, wchar_t wch);
wchar_t* alloc_mbstows(const char *mbstring);
/* buttons */
void
set_buttons(struct dialog *d, bool shortcut, const char *oklabel,
const char *canclabel);
void draw_buttons(struct dialog *d);
bool shortcut_buttons(wint_t key, struct buttons *bs);
/* widget utils */
int hide_dialog(struct dialog *d);
int f1help_dialog(struct bsddialog_conf *conf);
void
draw_borders(struct bsddialog_conf *conf, WINDOW *win, enum elevation elev);
void
update_box(struct bsddialog_conf *conf, WINDOW *win, int y, int x, int h, int w,
enum elevation elev);
void
rtextpad(struct dialog *d, int ytext, int xtext, int upnotext, int downnotext);
/* (auto) sizing and (auto) position */
int
set_widget_size(struct bsddialog_conf *conf, int rows, int cols, int *h,
int *w);
int
set_widget_autosize(struct bsddialog_conf *conf, int rows, int cols, int *h,
int *w, const char *text, int *rowstext, struct buttons *bs, int hnotext,
int minw);
int widget_checksize(int h, int w, struct buttons *bs, int hnotext, int minw);
int
set_widget_position(struct bsddialog_conf *conf, int *y, int *x, int h, int w);
int dialog_size_position(struct dialog *d, int hnotext, int minw, int *htext);
/* dialog */
void end_dialog(struct dialog *d);
int draw_dialog(struct dialog *d);
int
prepare_dialog(struct bsddialog_conf *conf, const char *text, int rows,
int cols, struct dialog *d);
#endif
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