rxvt-unicode/src/scrollbar.C

/*--------------------------------*-C-*---------------------------------*
 * File:        scrollbar.c
 *----------------------------------------------------------------------*
 * $Id: scrollbar.C,v 1.7 2003/12/18 14:11:47 pcg Exp $
 *
 * Copyright (c) 1997,1998 mj olesen <olesen@me.QueensU.CA>
 * Copyright (c) 1998      Alfredo K. Kojima <kojima@windowmaker.org>
 *                              - N*XTstep like scrollbars
 * Copyright (c) 1999-2001 Geoff Wing <gcw@pobox.com>
 *
 * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 *----------------------------------------------------------------------*/

#include "../config.h"          /* NECESSARY */
#include "rxvt.h"               /* NECESSARY */
#include "scrollbar.intpro"     /* PROTOS for internal routines */

/*----------------------------------------------------------------------*/

/*
 * Map or unmap a scrollbar.  Returns non-zero upon change of state
 */
int
rxvt_term::scrollbar_mapping (int map)
{
    int             change = 0;

#ifdef HAVE_SCROLLBARS
    if (map && !scrollbar_visible()) {
        scrollBar.setIdle ();
        if (!scrollBar.win)
            resize_scrollbar ();
        if (scrollBar.win) {
            XMapWindow(Xdisplay, scrollBar.win);
            change = 1;
        }
    } else if (!map && scrollbar_visible()) {
        scrollBar.state = 0;
        XUnmapWindow(Xdisplay, scrollBar.win);
        change = 1;
    }
#endif
    return change;
}

void
rxvt_term::resize_scrollbar ()
{
#ifdef HAVE_SCROLLBARS
    int delayed_init = 0;

#define R_SCROLLBEG_XTERM       0
#define R_SCROLLEND_XTERM       szHint.height
#define R_SCROLLBEG_NEXT        0
#define R_SCROLLEND_NEXT        szHint.height - (SB_BUTTON_TOTAL_HEIGHT + \
                                                    SB_PADDING)
#define R_SCROLLBEG_RXVT        (scrollBar.width + 1) + sb_shadow
#define R_SCROLLEND_RXVT        szHint.height - R_SCROLLBEG_RXVT - \
                                    (2 * sb_shadow)

#if defined(XTERM_SCROLLBAR)
    if (scrollBar.style == R_SB_XTERM) {
        scrollBar.beg = R_SCROLLBEG_XTERM;
        scrollBar.end = R_SCROLLEND_XTERM;
        //scrollBar.update = rxvt_scrollbar_show_xterm;
    }
#endif
#if defined(NEXT_SCROLLBAR)
    if (scrollBar.style == R_SB_NEXT) {
        scrollBar.beg = R_SCROLLBEG_NEXT;
        scrollBar.end = R_SCROLLEND_NEXT;
        //scrollBar.update = rxvt_scrollbar_show_next;
    }
#endif
#if defined(RXVT_SCROLLBAR)
    if (scrollBar.style == R_SB_RXVT) {
        scrollBar.beg = R_SCROLLBEG_RXVT;
        scrollBar.end = R_SCROLLEND_RXVT;
        //scrollBar.update = rxvt_scrollbar_show_rxvt;
    }
#endif

    if (!scrollBar.win) {
/* create the scrollbar window */
        scrollBar.win = XCreateSimpleWindow(Xdisplay,
                                               TermWin.parent[0],
                                               window_sb_x, 0,
                                               scrollbar_TotalWidth(),
                                               szHint.height,
                                               0,
                                               PixColors[Color_fg],
                                               PixColors[Color_bg]);
#ifdef DEBUG_X
        XStoreName(Xdisplay, scrollBar.win, "scrollbar");
#endif
        XDefineCursor(Xdisplay, scrollBar.win, leftptr_cursor);
        XSelectInput(Xdisplay, scrollBar.win,
                     (ExposureMask | ButtonPressMask | ButtonReleaseMask
                      | Button1MotionMask | Button2MotionMask
                      | Button3MotionMask));
        delayed_init = 1;
    }
    scrollbar_show (1);
    if (delayed_init)
        XMapWindow (Xdisplay, scrollBar.win);
#endif
}

/*
 * Update current scrollbar view w.r.t. slider heights, etc.
 */
int
rxvt_term::scrollbar_show (int update)
{
    int             ret = 0;
#ifdef HAVE_SCROLLBARS
    int             top, bot, len, adj;

    if (!scrollbar_visible())
        return 0;

    if (update) {
        top = (TermWin.nscrolled - TermWin.view_start);
        bot = top + (TermWin.nrow - 1);
        len = max((TermWin.nscrolled + (TermWin.nrow - 1)), 1);
        adj = (((bot - top) * scrollbar_size()) % len) > 0 ? 1 : 0;

        scrollBar.top = (scrollBar.beg + (top * scrollbar_size()) / len);
        scrollbar_len = ((bot - top) * scrollbar_size()) / len +
                              scrollbar_minheight() + adj;
        scrollBar.bot = (scrollBar.top + scrollbar_len);
        /* no change */
        if (scrollBar.top == last_top
            && scrollBar.bot == last_bot
            && (scrollBar.state == last_state || !scrollbar_isUpDn()))
            return 0;
    }

    ret = scrollbar_update (update, last_top, last_bot, scrollbar_len);

    last_top = scrollBar.top;
    last_bot = scrollBar.bot;
    last_state = scrollBar.state;
#endif

    return ret;
}

void
rxvt_term::setup_scrollbar (const char *scrollalign, const char *scrollstyle, const char *thickness)
{
#ifdef HAVE_SCROLLBARS
    int             i;
    short           style, width;

# if defined(RXVT_SCROLLBAR) || !(defined(NEXT_SCROLLBAR) || defined(XTERM_SCROLLBAR))
    style = R_SB_RXVT;
# else
#  ifdef NEXT_SCROLLBAR
    style = R_SB_NEXT;
#  elif defined(XTERM_SCROLLBAR)
    style = R_SB_XTERM;
#  endif
# endif

# if (defined(NEXT_SCROLLBAR) || defined(XTERM_SCROLLBAR))
    if (scrollstyle) {
#  ifdef NEXT_SCROLLBAR
        if (STRNCASECMP(scrollstyle, "next", 4) == 0)
            style = R_SB_NEXT;
#  endif
#  ifdef XTERM_SCROLLBAR
        if (STRNCASECMP(scrollstyle, "xterm", 5) == 0)
            style = R_SB_XTERM;
#  endif
    }
# endif
    if (style == R_SB_NEXT)
        width = SB_WIDTH_NEXT;
    else if (style == R_SB_XTERM)
        width = SB_WIDTH_XTERM;
    else /* if (style == R_SB_RXVT) */
        width = SB_WIDTH_RXVT;

    if (style != R_SB_NEXT)     /* dishonour request - for now */
    if (thickness && (i = atoi(thickness)) >= SB_WIDTH_MINIMUM)
        width = min(i, SB_WIDTH_MAXIMUM);

# if defined(RXVT_SCROLLBAR)
    if (!(Options & Opt_scrollBar_floating) && style == R_SB_RXVT)
        sb_shadow = SHADOW;
# endif

    scrollBar.style = style;
    scrollBar.width = width;

    /* scrollbar_align = R_SB_ALIGN_CENTRE; */
    if (scrollalign) {
        if (STRNCASECMP(scrollalign, "top", 3) == 0)
            scrollbar_align = R_SB_ALIGN_TOP;
        else if (STRNCASECMP(scrollalign, "bottom", 6) == 0)
            scrollbar_align = R_SB_ALIGN_BOTTOM;
    }
#endif
}

/*----------------------- end-of-file (C source) -----------------------*/
Revision:	1.8
Committed:	Sat Jan 31 00:20:21 2004 UTC (20 years, 3 months ago) by pcg
Content type:	text/plain
Branch:	MAIN
Changes since 1.7:	+38 -42 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	pcg	1.1	/---------------------------------C----------------------------------
2			* File: scrollbar.c
3			----------------------------------------------------------------------
4	pcg	1.8	* $Id: scrollbar.C,v 1.7 2003/12/18 14:11:47 pcg Exp $
5	pcg	1.1	*
6			* Copyright (c) 1997,1998 mj olesen <olesen@me.QueensU.CA>
7			* Copyright (c) 1998 Alfredo K. Kojima <kojima@windowmaker.org>
8			* - N*XTstep like scrollbars
9			* Copyright (c) 1999-2001 Geoff Wing <gcw@pobox.com>
10			*
11			* This program is free software; you can redistribute it and/or modify
12			* it under the terms of the GNU General Public License as published by
13			* the Free Software Foundation; either version 2 of the License, or
14			* (at your option) any later version.
15			*
16			* This program is distributed in the hope that it will be useful,
17			* but WITHOUT ANY WARRANTY; without even the implied warranty of
18			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19			* GNU General Public License for more details.
20			*
21			* You should have received a copy of the GNU General Public License
22			* along with this program; if not, write to the Free Software
23			* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24			----------------------------------------------------------------------/
25
26			#include "../config.h" /* NECESSARY */
27			#include "rxvt.h" /* NECESSARY */
28			#include "scrollbar.intpro" /* PROTOS for internal routines */
29
30			/----------------------------------------------------------------------/
31
32			/*
33			* Map or unmap a scrollbar. Returns non-zero upon change of state
34			*/
35			int
36	pcg	1.8	rxvt_term::scrollbar_mapping (int map)
37	pcg	1.1	{
38			int change = 0;
39	pcg	1.6
40	pcg	1.1	#ifdef HAVE_SCROLLBARS
41	pcg	1.8	if (map && !scrollbar_visible()) {
42			scrollBar.setIdle ();
43			if (!scrollBar.win)
44			resize_scrollbar ();
45			if (scrollBar.win) {
46			XMapWindow(Xdisplay, scrollBar.win);
47	pcg	1.1	change = 1;
48			}
49	pcg	1.8	} else if (!map && scrollbar_visible()) {
50			scrollBar.state = 0;
51			XUnmapWindow(Xdisplay, scrollBar.win);
52	pcg	1.1	change = 1;
53			}
54			#endif
55			return change;
56			}
57
58			void
59	pcg	1.6	rxvt_term::resize_scrollbar ()
60	pcg	1.1	{
61			#ifdef HAVE_SCROLLBARS
62	pcg	1.6	int delayed_init = 0;
63	pcg	1.1
64			#define R_SCROLLBEG_XTERM 0
65	pcg	1.6	#define R_SCROLLEND_XTERM szHint.height
66	pcg	1.1	#define R_SCROLLBEG_NEXT 0
67	pcg	1.6	#define R_SCROLLEND_NEXT szHint.height - (SB_BUTTON_TOTAL_HEIGHT + \
68	pcg	1.1	SB_PADDING)
69	pcg	1.6	#define R_SCROLLBEG_RXVT (scrollBar.width + 1) + sb_shadow
70			#define R_SCROLLEND_RXVT szHint.height - R_SCROLLBEG_RXVT - \
71			(2 * sb_shadow)
72	pcg	1.1
73			#if defined(XTERM_SCROLLBAR)
74	pcg	1.6	if (scrollBar.style == R_SB_XTERM) {
75			scrollBar.beg = R_SCROLLBEG_XTERM;
76			scrollBar.end = R_SCROLLEND_XTERM;
77	pcg	1.8	//scrollBar.update = rxvt_scrollbar_show_xterm;
78	pcg	1.1	}
79			#endif
80			#if defined(NEXT_SCROLLBAR)
81	pcg	1.6	if (scrollBar.style == R_SB_NEXT) {
82			scrollBar.beg = R_SCROLLBEG_NEXT;
83			scrollBar.end = R_SCROLLEND_NEXT;
84	pcg	1.8	//scrollBar.update = rxvt_scrollbar_show_next;
85	pcg	1.1	}
86			#endif
87			#if defined(RXVT_SCROLLBAR)
88	pcg	1.6	if (scrollBar.style == R_SB_RXVT) {
89			scrollBar.beg = R_SCROLLBEG_RXVT;
90			scrollBar.end = R_SCROLLEND_RXVT;
91	pcg	1.8	//scrollBar.update = rxvt_scrollbar_show_rxvt;
92	pcg	1.1	}
93			#endif
94
95	pcg	1.6	if (!scrollBar.win) {
96	pcg	1.1	/* create the scrollbar window */
97	pcg	1.6	scrollBar.win = XCreateSimpleWindow(Xdisplay,
98			TermWin.parent[0],
99			window_sb_x, 0,
100	pcg	1.1	scrollbar_TotalWidth(),
101	pcg	1.6	szHint.height,
102	pcg	1.1	0,
103	pcg	1.6	PixColors[Color_fg],
104			PixColors[Color_bg]);
105	pcg	1.1	#ifdef DEBUG_X
106	pcg	1.6	XStoreName(Xdisplay, scrollBar.win, "scrollbar");
107	pcg	1.1	#endif
108	pcg	1.6	XDefineCursor(Xdisplay, scrollBar.win, leftptr_cursor);
109			XSelectInput(Xdisplay, scrollBar.win,
110	pcg	1.1	(ExposureMask \| ButtonPressMask \| ButtonReleaseMask
111			\| Button1MotionMask \| Button2MotionMask
112			\| Button3MotionMask));
113			delayed_init = 1;
114			}
115	pcg	1.8	scrollbar_show (1);
116	pcg	1.1	if (delayed_init)
117	pcg	1.6	XMapWindow (Xdisplay, scrollBar.win);
118	pcg	1.1	#endif
119			}
120
121			/*
122			* Update current scrollbar view w.r.t. slider heights, etc.
123			*/
124			int
125	pcg	1.8	rxvt_term::scrollbar_show (int update)
126	pcg	1.1	{
127			int ret = 0;
128			#ifdef HAVE_SCROLLBARS
129			int top, bot, len, adj;
130
131	pcg	1.8	if (!scrollbar_visible())
132	pcg	1.1	return 0;
133
134			if (update) {
135	pcg	1.8	top = (TermWin.nscrolled - TermWin.view_start);
136			bot = top + (TermWin.nrow - 1);
137			len = max((TermWin.nscrolled + (TermWin.nrow - 1)), 1);
138	pcg	1.1	adj = (((bot - top) * scrollbar_size()) % len) > 0 ? 1 : 0;
139
140	pcg	1.8	scrollBar.top = (scrollBar.beg + (top * scrollbar_size()) / len);
141			scrollbar_len = ((bot - top) * scrollbar_size()) / len +
142	pcg	1.1	scrollbar_minheight() + adj;
143	pcg	1.8	scrollBar.bot = (scrollBar.top + scrollbar_len);
144	pcg	1.1	/* no change */
145	pcg	1.8	if (scrollBar.top == last_top
146			&& scrollBar.bot == last_bot
147			&& (scrollBar.state == last_state \|\| !scrollbar_isUpDn()))
148	pcg	1.1	return 0;
149			}
150
151	pcg	1.8	ret = scrollbar_update (update, last_top, last_bot, scrollbar_len);
152	pcg	1.1
153	pcg	1.8	last_top = scrollBar.top;
154			last_bot = scrollBar.bot;
155			last_state = scrollBar.state;
156	pcg	1.7	#endif
157	pcg	1.1
158			return ret;
159			}
160
161			void
162	pcg	1.8	rxvt_term::setup_scrollbar (const char scrollalign, const char scrollstyle, const char *thickness)
163	pcg	1.1	{
164			#ifdef HAVE_SCROLLBARS
165			int i;
166			short style, width;
167
168			# if defined(RXVT_SCROLLBAR) \|\| !(defined(NEXT_SCROLLBAR) \|\| defined(XTERM_SCROLLBAR))
169			style = R_SB_RXVT;
170			# else
171			# ifdef NEXT_SCROLLBAR
172			style = R_SB_NEXT;
173			# elif defined(XTERM_SCROLLBAR)
174			style = R_SB_XTERM;
175			# endif
176			# endif
177
178			# if (defined(NEXT_SCROLLBAR) \|\| defined(XTERM_SCROLLBAR))
179			if (scrollstyle) {
180			# ifdef NEXT_SCROLLBAR
181			if (STRNCASECMP(scrollstyle, "next", 4) == 0)
182			style = R_SB_NEXT;
183			# endif
184			# ifdef XTERM_SCROLLBAR
185			if (STRNCASECMP(scrollstyle, "xterm", 5) == 0)
186			style = R_SB_XTERM;
187			# endif
188			}
189			# endif
190			if (style == R_SB_NEXT)
191			width = SB_WIDTH_NEXT;
192			else if (style == R_SB_XTERM)
193			width = SB_WIDTH_XTERM;
194			else /* if (style == R_SB_RXVT) */
195			width = SB_WIDTH_RXVT;
196
197			if (style != R_SB_NEXT) /* dishonour request - for now */
198			if (thickness && (i = atoi(thickness)) >= SB_WIDTH_MINIMUM)
199			width = min(i, SB_WIDTH_MAXIMUM);
200
201			# if defined(RXVT_SCROLLBAR)
202	pcg	1.8	if (!(Options & Opt_scrollBar_floating) && style == R_SB_RXVT)
203			sb_shadow = SHADOW;
204	pcg	1.1	# endif
205
206	pcg	1.8	scrollBar.style = style;
207			scrollBar.width = width;
208	pcg	1.1
209	pcg	1.8	/* scrollbar_align = R_SB_ALIGN_CENTRE; */
210	pcg	1.1	if (scrollalign) {
211			if (STRNCASECMP(scrollalign, "top", 3) == 0)
212	pcg	1.8	scrollbar_align = R_SB_ALIGN_TOP;
213	pcg	1.1	else if (STRNCASECMP(scrollalign, "bottom", 6) == 0)
214	pcg	1.8	scrollbar_align = R_SB_ALIGN_BOTTOM;
215	pcg	1.1	}
216			#endif
217			}
218
219			/----------------------- end-of-file (C source) -----------------------/