rxvt-unicode/src/scrollbar.C

/*--------------------------------*-C-*---------------------------------*
 * File:        scrollbar.c
 *----------------------------------------------------------------------*
 * $Id: scrollbar.C,v 1.6 2003/12/18 13:33:03 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
 */
/* EXTPROTO */
int
rxvt_scrollbar_mapping(pR_ int map)
{
    int             change = 0;

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

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

    if (!scrollbar_visible(R))
        return 0;

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

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

    ret = R->scrollBar.update(aR_ update, R->last_top, R->last_bot,
                              R->scrollbar_len);

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

    return ret;
}

/* EXTPROTO */
void
rxvt_setup_scrollbar(pR_ 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 (!(R->Options & Opt_scrollBar_floating) && style == R_SB_RXVT)
        R->sb_shadow = SHADOW;
# endif

    R->scrollBar.style = style;
    R->scrollBar.width = width;

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

/*----------------------- end-of-file (C source) -----------------------*/
Revision:	1.7
Committed:	Thu Dec 18 14:11:47 2003 UTC (20 years, 5 months ago) by pcg
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-1-3, rel-1-2
Changes since 1.6:	+2 -2 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	pcg	1.1	/---------------------------------C----------------------------------
2			* File: scrollbar.c
3			----------------------------------------------------------------------
4	pcg	1.7	* $Id: scrollbar.C,v 1.6 2003/12/18 13:33:03 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			/* EXTPROTO */
36			int
37			rxvt_scrollbar_mapping(pR_ int map)
38			{
39			int change = 0;
40	pcg	1.6
41	pcg	1.1	#ifdef HAVE_SCROLLBARS
42			if (map && !scrollbar_visible(R)) {
43	pcg	1.5	R->scrollBar.setIdle ();
44	pcg	1.1	if (!R->scrollBar.win)
45	pcg	1.6	R->resize_scrollbar ();
46	pcg	1.1	if (R->scrollBar.win) {
47			XMapWindow(R->Xdisplay, R->scrollBar.win);
48			change = 1;
49			}
50			} else if (!map && scrollbar_visible(R)) {
51			R->scrollBar.state = 0;
52			XUnmapWindow(R->Xdisplay, R->scrollBar.win);
53			change = 1;
54			}
55			#endif
56			return change;
57			}
58
59			void
60	pcg	1.6	rxvt_term::resize_scrollbar ()
61	pcg	1.1	{
62			#ifdef HAVE_SCROLLBARS
63	pcg	1.6	int delayed_init = 0;
64	pcg	1.1
65			#define R_SCROLLBEG_XTERM 0
66	pcg	1.6	#define R_SCROLLEND_XTERM szHint.height
67	pcg	1.1	#define R_SCROLLBEG_NEXT 0
68	pcg	1.6	#define R_SCROLLEND_NEXT szHint.height - (SB_BUTTON_TOTAL_HEIGHT + \
69	pcg	1.1	SB_PADDING)
70	pcg	1.6	#define R_SCROLLBEG_RXVT (scrollBar.width + 1) + sb_shadow
71			#define R_SCROLLEND_RXVT szHint.height - R_SCROLLBEG_RXVT - \
72			(2 * sb_shadow)
73	pcg	1.1
74			#if defined(XTERM_SCROLLBAR)
75	pcg	1.6	if (scrollBar.style == R_SB_XTERM) {
76			scrollBar.beg = R_SCROLLBEG_XTERM;
77			scrollBar.end = R_SCROLLEND_XTERM;
78			scrollBar.update = rxvt_scrollbar_show_xterm;
79	pcg	1.1	}
80			#endif
81			#if defined(NEXT_SCROLLBAR)
82	pcg	1.6	if (scrollBar.style == R_SB_NEXT) {
83			scrollBar.beg = R_SCROLLBEG_NEXT;
84			scrollBar.end = R_SCROLLEND_NEXT;
85			scrollBar.update = rxvt_scrollbar_show_next;
86	pcg	1.1	}
87			#endif
88			#if defined(RXVT_SCROLLBAR)
89	pcg	1.6	if (scrollBar.style == R_SB_RXVT) {
90			scrollBar.beg = R_SCROLLBEG_RXVT;
91			scrollBar.end = R_SCROLLEND_RXVT;
92			scrollBar.update = rxvt_scrollbar_show_rxvt;
93	pcg	1.1	}
94			#endif
95
96	pcg	1.6	if (!scrollBar.win) {
97	pcg	1.1	/* create the scrollbar window */
98	pcg	1.6	scrollBar.win = XCreateSimpleWindow(Xdisplay,
99			TermWin.parent[0],
100			window_sb_x, 0,
101	pcg	1.1	scrollbar_TotalWidth(),
102	pcg	1.6	szHint.height,
103	pcg	1.1	0,
104	pcg	1.6	PixColors[Color_fg],
105			PixColors[Color_bg]);
106	pcg	1.1	#ifdef DEBUG_X
107	pcg	1.6	XStoreName(Xdisplay, scrollBar.win, "scrollbar");
108	pcg	1.1	#endif
109	pcg	1.6	XDefineCursor(Xdisplay, scrollBar.win, leftptr_cursor);
110			XSelectInput(Xdisplay, scrollBar.win,
111	pcg	1.1	(ExposureMask \| ButtonPressMask \| ButtonReleaseMask
112			\| Button1MotionMask \| Button2MotionMask
113			\| Button3MotionMask));
114			delayed_init = 1;
115			}
116	pcg	1.6	rxvt_scrollbar_show (this, 1);
117	pcg	1.1	if (delayed_init)
118	pcg	1.6	XMapWindow (Xdisplay, scrollBar.win);
119	pcg	1.1	#endif
120			}
121
122			/*
123			* Update current scrollbar view w.r.t. slider heights, etc.
124			*/
125			/* EXTPROTO */
126			int
127			rxvt_scrollbar_show(pR_ int update)
128			{
129			int ret = 0;
130			#ifdef HAVE_SCROLLBARS
131			int top, bot, len, adj;
132
133			if (!scrollbar_visible(R))
134			return 0;
135
136			if (update) {
137			top = (R->TermWin.nscrolled - R->TermWin.view_start);
138			bot = top + (R->TermWin.nrow - 1);
139			len = max((R->TermWin.nscrolled + (R->TermWin.nrow - 1)), 1);
140			adj = (((bot - top) * scrollbar_size()) % len) > 0 ? 1 : 0;
141
142			R->scrollBar.top = (R->scrollBar.beg + (top * scrollbar_size()) / len);
143	pcg	1.3	R->scrollbar_len = ((bot - top) * scrollbar_size()) / len +
144	pcg	1.1	scrollbar_minheight() + adj;
145	pcg	1.3	R->scrollBar.bot = (R->scrollBar.top + R->scrollbar_len);
146	pcg	1.1	/* no change */
147	pcg	1.3	if (R->scrollBar.top == R->last_top
148			&& R->scrollBar.bot == R->last_bot
149			&& (R->scrollBar.state == R->last_state \|\| !scrollbar_isUpDn()))
150	pcg	1.1	return 0;
151			}
152
153	pcg	1.3	ret = R->scrollBar.update(aR_ update, R->last_top, R->last_bot,
154			R->scrollbar_len);
155	pcg	1.1
156	pcg	1.3	R->last_top = R->scrollBar.top;
157			R->last_bot = R->scrollBar.bot;
158			R->last_state = R->scrollBar.state;
159	pcg	1.7	#endif
160	pcg	1.1
161			return ret;
162			}
163
164			/* EXTPROTO */
165			void
166			rxvt_setup_scrollbar(pR_ const char scrollalign, const char scrollstyle, const char *thickness)
167			{
168			#ifdef HAVE_SCROLLBARS
169			int i;
170			short style, width;
171
172			# if defined(RXVT_SCROLLBAR) \|\| !(defined(NEXT_SCROLLBAR) \|\| defined(XTERM_SCROLLBAR))
173			style = R_SB_RXVT;
174			# else
175			# ifdef NEXT_SCROLLBAR
176			style = R_SB_NEXT;
177			# elif defined(XTERM_SCROLLBAR)
178			style = R_SB_XTERM;
179			# endif
180			# endif
181
182			# if (defined(NEXT_SCROLLBAR) \|\| defined(XTERM_SCROLLBAR))
183			if (scrollstyle) {
184			# ifdef NEXT_SCROLLBAR
185			if (STRNCASECMP(scrollstyle, "next", 4) == 0)
186			style = R_SB_NEXT;
187			# endif
188			# ifdef XTERM_SCROLLBAR
189			if (STRNCASECMP(scrollstyle, "xterm", 5) == 0)
190			style = R_SB_XTERM;
191			# endif
192			}
193			# endif
194			if (style == R_SB_NEXT)
195			width = SB_WIDTH_NEXT;
196			else if (style == R_SB_XTERM)
197			width = SB_WIDTH_XTERM;
198			else /* if (style == R_SB_RXVT) */
199			width = SB_WIDTH_RXVT;
200
201			if (style != R_SB_NEXT) /* dishonour request - for now */
202			if (thickness && (i = atoi(thickness)) >= SB_WIDTH_MINIMUM)
203			width = min(i, SB_WIDTH_MAXIMUM);
204
205			# if defined(RXVT_SCROLLBAR)
206			if (!(R->Options & Opt_scrollBar_floating) && style == R_SB_RXVT)
207			R->sb_shadow = SHADOW;
208			# endif
209
210			R->scrollBar.style = style;
211			R->scrollBar.width = width;
212
213	pcg	1.3	/* R->scrollbar_align = R_SB_ALIGN_CENTRE; */
214	pcg	1.1	if (scrollalign) {
215			if (STRNCASECMP(scrollalign, "top", 3) == 0)
216	pcg	1.3	R->scrollbar_align = R_SB_ALIGN_TOP;
217	pcg	1.1	else if (STRNCASECMP(scrollalign, "bottom", 6) == 0)
218	pcg	1.3	R->scrollbar_align = R_SB_ALIGN_BOTTOM;
219	pcg	1.1	}
220			#endif
221			}
222
223			/----------------------- end-of-file (C source) -----------------------/