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eterm/src/scrollbar.h

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/* scrollbar.h -- Eterm scrollbar module header file
*
* This file is original work by Michael Jennings <mej@eterm.org> and
* Tuomo Venalainen <vendu@cc.hut.fi>. This file, and any other file
* bearing this same message or a similar one, is distributed under
* the GNU Public License (GPL) as outlined in the COPYING file.
*
* Copyright (C) 1997, Michael Jennings and Tuomo Venalainen
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
#ifndef _SCROLLBAR_H
# define _SCROLLBAR_H
# include <X11/Xfuncproto.h>
# include <ctype.h>
# ifdef PIXMAP_SCROLLBAR
# include <Imlib.h>
# endif
# include "events.h"
/************ Macros and Definitions ************/
/* Scrollbar types we support */
# define SCROLLBAR_MOTIF 1
# define SCROLLBAR_XTERM 2
# define SCROLLBAR_NEXT 3
/* Scrollbar state macros */
#define scrollbar_visible() (scrollBar.state)
#define scrollbar_isMotion() (scrollBar.state == 'm')
#define scrollbar_isUp() (scrollBar.state == 'U')
#define scrollbar_isDn() (scrollBar.state == 'D')
#define scrollbar_isUpDn() isupper (scrollBar.state)
#define scrollbar_setNone() do { D_SCROLLBAR(("scrollbar_setNone(): Cancelling motion.\n")); scrollBar.state = 1; } while (0)
#define scrollbar_setMotion() do { D_SCROLLBAR(("scrollbar_setMotion()\n")); scrollBar.state = 'm'; } while (0)
#define scrollbar_setUp() do { D_SCROLLBAR(("scrollbar_setUp()\n")); scrollBar.state = 'U'; } while (0)
#define scrollbar_setDn() do { D_SCROLLBAR(("scrollbar_setNone()\n")); scrollBar.state = 'D'; } while (0)
/* The various scrollbar elements */
#ifdef PIXMAP_SCROLLBAR
# define scrollbar_win_is_scrollbar(w) (scrollbar_visible() && (w) == scrollBar.win)
# define scrollbar_win_is_uparrow(w) ((w) == scrollBar.up_win)
# define scrollbar_win_is_downarrow(w) ((w) == scrollBar.dn_win)
# define scrollbar_win_is_anchor(w) ((w) == scrollBar.sa_win)
# define scrollbar_is_pixmapped() ((images[image_sb].current->iml->im) && (images[image_sb].mode & MODE_MASK))
# define scrollbar_uparrow_is_pixmapped() ((images[image_up].current->iml->im) && (images[image_up].mode & MODE_MASK))
# define scrollbar_downarrow_is_pixmapped() ((images[image_down].current->iml->im) && (images[image_down].mode & MODE_MASK))
# define scrollbar_anchor_is_pixmapped() ((images[image_sa].current->iml->im) && (images[image_sa].mode & MODE_MASK))
# define scrollbar_upButton(w, y) ( scrollbar_uparrow_is_pixmapped() ? scrollbar_win_is_uparrow(w) \
: ((scrollBar.type == SCROLLBAR_NEXT && (y) > scrollBar.end && (y) <= scrollbar_dn_loc()) \
|| (scrollBar.type != SCROLLBAR_NEXT && (y) < scrollBar.beg)))
# define scrollbar_dnButton(w, y) ( scrollbar_downarrow_is_pixmapped() ? scrollbar_win_is_downarrow(w) \
: ((scrollBar.type == SCROLLBAR_NEXT && (y) > scrollbar_dn_loc()) \
|| (scrollBar.type != SCROLLBAR_NEXT && (y) > scrollBar.end)))
#else
# define scrollbar_win_is_scrollbar(w) (scrollbar_visible() && (w) == scrollBar.win)
# define scrollbar_win_is_uparrow(w) (0)
# define scrollbar_win_is_downarrow(w) (0)
# define scrollbar_win_is_anchor(w) (0)
# define scrollbar_is_pixmapped() (0)
# define scrollbar_uparrow_is_pixmapped() (0)
# define scrollbar_downarrow_is_pixmapped() (0)
# define scrollbar_anchor_is_pixmapped() (0)
# define scrollbar_upButton(w, y) ((scrollBar.type == SCROLLBAR_NEXT && (y) > scrollBar.end && (y) <= scrollbar_dn_loc()) \
|| (scrollBar.type != SCROLLBAR_NEXT && (y) < scrollBar.beg))
# define scrollbar_dnButton(w, y) ((scrollBar.type == SCROLLBAR_NEXT && (y) > scrollbar_dn_loc()) \
|| (scrollBar.type != SCROLLBAR_NEXT && (y) > scrollBar.end))
#endif
/* Scrollbar dimensions */
#define scrollbar_scrollarea_height() (scrollBar.end - scrollBar.beg)
#define scrollbar_anchor_width() (scrollBar.width)
#define scrollbar_anchor_height() (scrollBar.bot - scrollBar.top)
#define scrollbar_trough_width() (scrollBar.width + 2 * scrollBar.shadow)
#define scrollbar_trough_height() (scrollBar.end + ((scrollBar.type == SCROLLBAR_NEXT) ? (2 * (scrollBar.width + 1) + scrollBar.shadow) \
: ((scrollBar.width + 1) + scrollBar.shadow)))
#define scrollbar_arrow_width() (scrollBar.width)
#define scrollbar_arrow_height() (scrollBar.width)
#define scrollbar_anchor_max_height() ((menubar_visible()) ? (TermWin.height) : (TermWin.height - ((scrollBar.width + 1) + scrollBar.shadow)))
/* Scrollbar positions */
#define scrollbar_is_above_anchor(w, y) ((y) < scrollBar.top && !scrollbar_win_is_anchor(w))
#define scrollbar_is_below_anchor(w, y) ((y) > scrollBar.bot && !scrollbar_win_is_anchor(w))
#define scrollbar_position(y) ((y) - scrollBar.beg)
#define scrollbar_up_loc() (scrollbar_uparrow_is_pixmapped() ? ((scrollBar.type == SCROLLBAR_NEXT) ? (scrollBar.end + 1) : (scrollBar.shadow)) \
: ((scrollBar.type == SCROLLBAR_NEXT) ? (scrollBar.end + 1) : (scrollBar.shadow)))
#define scrollbar_dn_loc() (scrollbar_downarrow_is_pixmapped() \
? ((scrollBar.type == SCROLLBAR_NEXT) ? (scrollBar.end + scrollBar.width + 2) : (scrollBar.end + 1)) \
: ((scrollBar.type == SCROLLBAR_NEXT) ? (scrollBar.end + scrollBar.width + 2) : (scrollBar.end + 1)))
/* Scrollbar operations */
#define map_scrollbar(show) do {if (scrollbar_mapping(show)) {scr_touch(); resize();} PrivMode(show, PrivMode_scrollBar); } while (0)
#define scrollbar_get_shadow() (scrollBar.shadow)
#define scrollbar_set_shadow(s) do { scrollBar.shadow = (s); } while (0)
#define scrollbar_get_win() (scrollBar.win)
#define scrollbar_get_uparrow_win() (scrollBar.up_win)
#define scrollbar_get_downarrow_win() (scrollBar.dn_win)
#define scrollbar_get_anchor_win() (scrollBar.sa_win)
/************ Structures ************/
typedef struct {
short beg, end; /* beg/end of slider sub-window */
short top, bot; /* top/bot of slider */
unsigned char state; /* scrollbar state */
unsigned char type; /* scrollbar type (see above) */
unsigned short width, height; /* scrollbar width and height, without the shadow */
unsigned short win_width, win_height; /* scrollbar window dimensions */
short up_arrow_loc, down_arrow_loc; /* y coordinates for arrows */
unsigned short arrow_width, arrow_height; /* scrollbar arrow dimensions */
unsigned char shadow; /* shadow width */
Window win;
# ifdef PIXMAP_SCROLLBAR
Window up_win;
Window dn_win;
Window sa_win;
# endif
} scrollbar_t;
/************ Variables ************/
extern scrollbar_t scrollBar;
#ifdef SCROLLBAR_BUTTON_CONTINUAL_SCROLLING
extern short scroll_arrow_delay;
#endif
/************ Function Prototypes ************/
_XFUNCPROTOBEGIN
extern void Draw_up_button(int, int, int);
extern void Draw_dn_button(int, int, int);
extern void scrollbar_init(void);
extern void scrollbar_event_init_dispatcher(void);
extern unsigned char sb_handle_configure_notify(event_t *);
extern unsigned char sb_handle_enter_notify(event_t *);
extern unsigned char sb_handle_leave_notify(event_t *);
extern unsigned char sb_handle_focus_in(event_t *);
extern unsigned char sb_handle_focus_out(event_t *);
extern unsigned char sb_handle_expose(event_t *);
extern unsigned char sb_handle_button_press(event_t *);
extern unsigned char sb_handle_button_release(event_t *);
extern unsigned char sb_handle_motion_notify(event_t *);
extern unsigned char scrollbar_dispatch_event(event_t *);
extern unsigned char scrollbar_mapping(unsigned char);
extern void scrollbar_reset(void);
extern unsigned char scrollbar_show(short);
_XFUNCPROTOEND
#endif /* _SCROLLBAR_H */
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