rxvt-unicode/src/scrollbar.C

/*--------------------------------*-C-*---------------------------------*
 * File:        scrollbar.c
 *----------------------------------------------------------------------*
 * $Id: scrollbar.C,v 1.3 2003/11/25 11:52:42 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)) {
        scrollbar_setIdle();
        if (!R->scrollBar.win)
            rxvt_Resize_scrollBar(aR);
        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;
}

/* EXTPROTO */
void
rxvt_Resize_scrollBar(pR)
{
#ifdef HAVE_SCROLLBARS
    int             delayed_init = 0;

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

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

    if (!R->scrollBar.win) {
/* create the scrollbar window */
        R->scrollBar.win = XCreateSimpleWindow(R->Xdisplay,
                                               R->TermWin.parent[0],
                                               R->window_sb_x, 0,
                                               scrollbar_TotalWidth(),
                                               R->szHint.height,
                                               0,
                                               R->PixColors[Color_fg],
                                               R->PixColors[Color_bg]);
#ifdef DEBUG_X
        XStoreName(R->Xdisplay, R->scrollBar.win, "scrollbar");
#endif
        XDefineCursor(R->Xdisplay, R->scrollBar.win, R->leftptr_cursor);
        XSelectInput(R->Xdisplay, R->scrollBar.win,
                     (ExposureMask | ButtonPressMask | ButtonReleaseMask
                      | Button1MotionMask | Button2MotionMask
                      | Button3MotionMask));
        delayed_init = 1;
    }
    rxvt_scrollbar_show(aR_ 1);
    if (delayed_init)
        XMapWindow(R->Xdisplay, R->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:	1.4
Committed:	Tue Nov 25 17:11:33 2003 UTC (20 years, 6 months ago) by pcg
Content type:	text/plain
Branch:	MAIN
Changes since 1.3:	+2 -2 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	pcg	1.1	/---------------------------------C----------------------------------
2			* File: scrollbar.c
3			----------------------------------------------------------------------
4	pcg	1.4	* $Id: scrollbar.C,v 1.3 2003/11/25 11:52:42 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			#ifdef HAVE_SCROLLBARS
41
42			if (map && !scrollbar_visible(R)) {
43			scrollbar_setIdle();
44			if (!R->scrollBar.win)
45			rxvt_Resize_scrollBar(aR);
46			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			/* EXTPROTO */
60			void
61			rxvt_Resize_scrollBar(pR)
62			{
63			#ifdef HAVE_SCROLLBARS
64			int delayed_init = 0;
65
66			#define R_SCROLLBEG_XTERM 0
67			#define R_SCROLLEND_XTERM R->szHint.height
68			#define R_SCROLLBEG_NEXT 0
69			#define R_SCROLLEND_NEXT R->szHint.height - (SB_BUTTON_TOTAL_HEIGHT + \
70			SB_PADDING)
71			#define R_SCROLLBEG_RXVT (R->scrollBar.width + 1) + R->sb_shadow
72			#define R_SCROLLEND_RXVT R->szHint.height - R_SCROLLBEG_RXVT - \
73			(2 * R->sb_shadow)
74
75			#if defined(XTERM_SCROLLBAR)
76			if (R->scrollBar.style == R_SB_XTERM) {
77			R->scrollBar.beg = R_SCROLLBEG_XTERM;
78			R->scrollBar.end = R_SCROLLEND_XTERM;
79			R->scrollBar.update = rxvt_scrollbar_show_xterm;
80			}
81			#endif
82			#if defined(NEXT_SCROLLBAR)
83			if (R->scrollBar.style == R_SB_NEXT) {
84			R->scrollBar.beg = R_SCROLLBEG_NEXT;
85			R->scrollBar.end = R_SCROLLEND_NEXT;
86			R->scrollBar.update = rxvt_scrollbar_show_next;
87			}
88			#endif
89			#if defined(RXVT_SCROLLBAR)
90			if (R->scrollBar.style == R_SB_RXVT) {
91			R->scrollBar.beg = R_SCROLLBEG_RXVT;
92			R->scrollBar.end = R_SCROLLEND_RXVT;
93			R->scrollBar.update = rxvt_scrollbar_show_rxvt;
94			}
95			#endif
96
97			if (!R->scrollBar.win) {
98			/* create the scrollbar window */
99			R->scrollBar.win = XCreateSimpleWindow(R->Xdisplay,
100			R->TermWin.parent[0],
101	pcg	1.3	R->window_sb_x, 0,
102	pcg	1.1	scrollbar_TotalWidth(),
103			R->szHint.height,
104			0,
105			R->PixColors[Color_fg],
106			R->PixColors[Color_bg]);
107			#ifdef DEBUG_X
108			XStoreName(R->Xdisplay, R->scrollBar.win, "scrollbar");
109			#endif
110	pcg	1.4	XDefineCursor(R->Xdisplay, R->scrollBar.win, R->leftptr_cursor);
111	pcg	1.1	XSelectInput(R->Xdisplay, R->scrollBar.win,
112			(ExposureMask \| ButtonPressMask \| ButtonReleaseMask
113			\| Button1MotionMask \| Button2MotionMask
114			\| Button3MotionMask));
115			delayed_init = 1;
116			}
117			rxvt_scrollbar_show(aR_ 1);
118			if (delayed_init)
119			XMapWindow(R->Xdisplay, R->scrollBar.win);
120			#endif
121			}
122
123			/*
124			* Update current scrollbar view w.r.t. slider heights, etc.
125			*/
126			/* EXTPROTO */
127			int
128			rxvt_scrollbar_show(pR_ int update)
129			{
130			int ret = 0;
131			#ifdef HAVE_SCROLLBARS
132			int top, bot, len, adj;
133
134			if (!scrollbar_visible(R))
135			return 0;
136
137			if (update) {
138			top = (R->TermWin.nscrolled - R->TermWin.view_start);
139			bot = top + (R->TermWin.nrow - 1);
140			len = max((R->TermWin.nscrolled + (R->TermWin.nrow - 1)), 1);
141			adj = (((bot - top) * scrollbar_size()) % len) > 0 ? 1 : 0;
142
143			R->scrollBar.top = (R->scrollBar.beg + (top * scrollbar_size()) / len);
144	pcg	1.3	R->scrollbar_len = ((bot - top) * scrollbar_size()) / len +
145	pcg	1.1	scrollbar_minheight() + adj;
146	pcg	1.3	R->scrollBar.bot = (R->scrollBar.top + R->scrollbar_len);
147	pcg	1.1	/* no change */
148	pcg	1.3	if (R->scrollBar.top == R->last_top
149			&& R->scrollBar.bot == R->last_bot
150			&& (R->scrollBar.state == R->last_state \|\| !scrollbar_isUpDn()))
151	pcg	1.1	return 0;
152			}
153
154	pcg	1.3	ret = R->scrollBar.update(aR_ update, R->last_top, R->last_bot,
155			R->scrollbar_len);
156	pcg	1.1
157	pcg	1.3	R->last_top = R->scrollBar.top;
158			R->last_bot = R->scrollBar.bot;
159			R->last_state = R->scrollBar.state;
160	pcg	1.1
161			#endif
162			return ret;
163			}
164
165			/* EXTPROTO */
166			void
167			rxvt_setup_scrollbar(pR_ const char scrollalign, const char scrollstyle, const char *thickness)
168			{
169			#ifdef HAVE_SCROLLBARS
170			int i;
171			short style, width;
172
173			# if defined(RXVT_SCROLLBAR) \|\| !(defined(NEXT_SCROLLBAR) \|\| defined(XTERM_SCROLLBAR))
174			style = R_SB_RXVT;
175			# else
176			# ifdef NEXT_SCROLLBAR
177			style = R_SB_NEXT;
178			# elif defined(XTERM_SCROLLBAR)
179			style = R_SB_XTERM;
180			# endif
181			# endif
182
183			# if (defined(NEXT_SCROLLBAR) \|\| defined(XTERM_SCROLLBAR))
184			if (scrollstyle) {
185			# ifdef NEXT_SCROLLBAR
186			if (STRNCASECMP(scrollstyle, "next", 4) == 0)
187			style = R_SB_NEXT;
188			# endif
189			# ifdef XTERM_SCROLLBAR
190			if (STRNCASECMP(scrollstyle, "xterm", 5) == 0)
191			style = R_SB_XTERM;
192			# endif
193			}
194			# endif
195			if (style == R_SB_NEXT)
196			width = SB_WIDTH_NEXT;
197			else if (style == R_SB_XTERM)
198			width = SB_WIDTH_XTERM;
199			else /* if (style == R_SB_RXVT) */
200			width = SB_WIDTH_RXVT;
201
202			if (style != R_SB_NEXT) /* dishonour request - for now */
203			if (thickness && (i = atoi(thickness)) >= SB_WIDTH_MINIMUM)
204			width = min(i, SB_WIDTH_MAXIMUM);
205
206			# if defined(RXVT_SCROLLBAR)
207			if (!(R->Options & Opt_scrollBar_floating) && style == R_SB_RXVT)
208			R->sb_shadow = SHADOW;
209			# endif
210
211			R->scrollBar.style = style;
212			R->scrollBar.width = width;
213
214	pcg	1.3	/* R->scrollbar_align = R_SB_ALIGN_CENTRE; */
215	pcg	1.1	if (scrollalign) {
216			if (STRNCASECMP(scrollalign, "top", 3) == 0)
217	pcg	1.3	R->scrollbar_align = R_SB_ALIGN_TOP;
218	pcg	1.1	else if (STRNCASECMP(scrollalign, "bottom", 6) == 0)
219	pcg	1.3	R->scrollbar_align = R_SB_ALIGN_BOTTOM;
220	pcg	1.1	}
221			#endif
222			}
223
224			/----------------------- end-of-file (C source) -----------------------/