rxvt-unicode/src/scrollbar.C

/*--------------------------------*-C-*---------------------------------*
 * File:        scrollbar.c
 *----------------------------------------------------------------------*
 *
 * 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(PLAIN_SCROLLBAR)
    if (scrollBar.style == R_SB_PLAIN) {
        scrollBar.beg = R_SCROLLBEG_XTERM;
        scrollBar.end = R_SCROLLEND_XTERM;
        scrollBar.update = &rxvt_term::scrollbar_show_plain;
    }
#endif
#if defined(XTERM_SCROLLBAR)
    if (scrollBar.style == R_SB_XTERM) {
        scrollBar.beg = R_SCROLLBEG_XTERM;
        scrollBar.end = R_SCROLLEND_XTERM;
        scrollBar.update = &rxvt_term::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_term::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_term::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 = (this->*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)
    style = R_SB_RXVT;
# elif defined(XTERM_SCROLLBAR)
    style = R_SB_XTERM;
# elif defined(NEXT_SCROLLBAR)
    style = R_SB_NEXT;
# elif defined(PLAIN_SCROLLBAR)
    style = R_SB_PLAIN;
#else
    style = R_SB_RXVT;
# endif

# if (defined(NEXT_SCROLLBAR) || defined(XTERM_SCROLLBAR) || defined(PLAIN_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
#  ifdef PLAIN_SCROLLBAR
        if (STRNCASECMP(scrollstyle, "plain", 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_PLAIN)
        width = SB_WIDTH_PLAIN;
    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:	1.10
Committed:	Sat Jan 31 04:12:10 2004 UTC (20 years, 4 months ago) by pcg
Content type:	text/plain
Branch:	MAIN
Changes since 1.9:	+23 -8 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	pcg	1.1	/---------------------------------C----------------------------------
2			* File: scrollbar.c
3			----------------------------------------------------------------------
4			*
5			* Copyright (c) 1997,1998 mj olesen <olesen@me.QueensU.CA>
6			* Copyright (c) 1998 Alfredo K. Kojima <kojima@windowmaker.org>
7			* - N*XTstep like scrollbars
8			* Copyright (c) 1999-2001 Geoff Wing <gcw@pobox.com>
9			*
10			* This program is free software; you can redistribute it and/or modify
11			* it under the terms of the GNU General Public License as published by
12			* the Free Software Foundation; either version 2 of the License, or
13			* (at your option) any later version.
14			*
15			* This program is distributed in the hope that it will be useful,
16			* but WITHOUT ANY WARRANTY; without even the implied warranty of
17			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18			* GNU General Public License for more details.
19			*
20			* You should have received a copy of the GNU General Public License
21			* along with this program; if not, write to the Free Software
22			* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23			----------------------------------------------------------------------/
24
25			#include "../config.h" /* NECESSARY */
26			#include "rxvt.h" /* NECESSARY */
27			#include "scrollbar.intpro" /* PROTOS for internal routines */
28
29			/----------------------------------------------------------------------/
30
31			/*
32			* Map or unmap a scrollbar. Returns non-zero upon change of state
33			*/
34			int
35	pcg	1.8	rxvt_term::scrollbar_mapping (int map)
36	pcg	1.1	{
37			int change = 0;
38	pcg	1.6
39	pcg	1.1	#ifdef HAVE_SCROLLBARS
40	pcg	1.8	if (map && !scrollbar_visible()) {
41			scrollBar.setIdle ();
42			if (!scrollBar.win)
43			resize_scrollbar ();
44			if (scrollBar.win) {
45			XMapWindow(Xdisplay, scrollBar.win);
46	pcg	1.1	change = 1;
47			}
48	pcg	1.8	} else if (!map && scrollbar_visible()) {
49			scrollBar.state = 0;
50			XUnmapWindow(Xdisplay, scrollBar.win);
51	pcg	1.1	change = 1;
52			}
53			#endif
54			return change;
55			}
56
57			void
58	pcg	1.6	rxvt_term::resize_scrollbar ()
59	pcg	1.1	{
60			#ifdef HAVE_SCROLLBARS
61	pcg	1.6	int delayed_init = 0;
62	pcg	1.1
63			#define R_SCROLLBEG_XTERM 0
64	pcg	1.6	#define R_SCROLLEND_XTERM szHint.height
65	pcg	1.1	#define R_SCROLLBEG_NEXT 0
66	pcg	1.6	#define R_SCROLLEND_NEXT szHint.height - (SB_BUTTON_TOTAL_HEIGHT + \
67	pcg	1.1	SB_PADDING)
68	pcg	1.6	#define R_SCROLLBEG_RXVT (scrollBar.width + 1) + sb_shadow
69			#define R_SCROLLEND_RXVT szHint.height - R_SCROLLBEG_RXVT - \
70			(2 * sb_shadow)
71	pcg	1.1
72	pcg	1.10	#if defined(PLAIN_SCROLLBAR)
73			if (scrollBar.style == R_SB_PLAIN) {
74			scrollBar.beg = R_SCROLLBEG_XTERM;
75			scrollBar.end = R_SCROLLEND_XTERM;
76			scrollBar.update = &rxvt_term::scrollbar_show_plain;
77			}
78			#endif
79	pcg	1.1	#if defined(XTERM_SCROLLBAR)
80	pcg	1.6	if (scrollBar.style == R_SB_XTERM) {
81			scrollBar.beg = R_SCROLLBEG_XTERM;
82			scrollBar.end = R_SCROLLEND_XTERM;
83	pcg	1.9	scrollBar.update = &rxvt_term::scrollbar_show_xterm;
84	pcg	1.1	}
85			#endif
86			#if defined(NEXT_SCROLLBAR)
87	pcg	1.6	if (scrollBar.style == R_SB_NEXT) {
88			scrollBar.beg = R_SCROLLBEG_NEXT;
89			scrollBar.end = R_SCROLLEND_NEXT;
90	pcg	1.9	scrollBar.update = &rxvt_term::scrollbar_show_next;
91	pcg	1.1	}
92			#endif
93			#if defined(RXVT_SCROLLBAR)
94	pcg	1.6	if (scrollBar.style == R_SB_RXVT) {
95			scrollBar.beg = R_SCROLLBEG_RXVT;
96			scrollBar.end = R_SCROLLEND_RXVT;
97	pcg	1.9	scrollBar.update = &rxvt_term::scrollbar_show_rxvt;
98	pcg	1.1	}
99			#endif
100
101	pcg	1.6	if (!scrollBar.win) {
102	pcg	1.1	/* create the scrollbar window */
103	pcg	1.6	scrollBar.win = XCreateSimpleWindow(Xdisplay,
104			TermWin.parent[0],
105			window_sb_x, 0,
106	pcg	1.1	scrollbar_TotalWidth(),
107	pcg	1.6	szHint.height,
108	pcg	1.1	0,
109	pcg	1.6	PixColors[Color_fg],
110			PixColors[Color_bg]);
111	pcg	1.1	#ifdef DEBUG_X
112	pcg	1.6	XStoreName(Xdisplay, scrollBar.win, "scrollbar");
113	pcg	1.1	#endif
114	pcg	1.6	XDefineCursor(Xdisplay, scrollBar.win, leftptr_cursor);
115			XSelectInput(Xdisplay, scrollBar.win,
116	pcg	1.1	(ExposureMask \| ButtonPressMask \| ButtonReleaseMask
117			\| Button1MotionMask \| Button2MotionMask
118			\| Button3MotionMask));
119			delayed_init = 1;
120			}
121	pcg	1.8	scrollbar_show (1);
122	pcg	1.1	if (delayed_init)
123	pcg	1.6	XMapWindow (Xdisplay, scrollBar.win);
124	pcg	1.1	#endif
125			}
126
127			/*
128			* Update current scrollbar view w.r.t. slider heights, etc.
129			*/
130			int
131	pcg	1.8	rxvt_term::scrollbar_show (int update)
132	pcg	1.1	{
133			int ret = 0;
134			#ifdef HAVE_SCROLLBARS
135			int top, bot, len, adj;
136
137	pcg	1.8	if (!scrollbar_visible())
138	pcg	1.1	return 0;
139
140			if (update) {
141	pcg	1.8	top = (TermWin.nscrolled - TermWin.view_start);
142			bot = top + (TermWin.nrow - 1);
143			len = max((TermWin.nscrolled + (TermWin.nrow - 1)), 1);
144	pcg	1.1	adj = (((bot - top) * scrollbar_size()) % len) > 0 ? 1 : 0;
145
146	pcg	1.8	scrollBar.top = (scrollBar.beg + (top * scrollbar_size()) / len);
147			scrollbar_len = ((bot - top) * scrollbar_size()) / len +
148	pcg	1.1	scrollbar_minheight() + adj;
149	pcg	1.8	scrollBar.bot = (scrollBar.top + scrollbar_len);
150	pcg	1.1	/* no change */
151	pcg	1.8	if (scrollBar.top == last_top
152			&& scrollBar.bot == last_bot
153			&& (scrollBar.state == last_state \|\| !scrollbar_isUpDn()))
154	pcg	1.1	return 0;
155			}
156
157	pcg	1.9	ret = (this->*scrollBar.update) (update, last_top, last_bot, scrollbar_len);
158	pcg	1.1
159	pcg	1.8	last_top = scrollBar.top;
160			last_bot = scrollBar.bot;
161			last_state = scrollBar.state;
162	pcg	1.7	#endif
163	pcg	1.1
164			return ret;
165			}
166
167			void
168	pcg	1.8	rxvt_term::setup_scrollbar (const char scrollalign, const char scrollstyle, const char *thickness)
169	pcg	1.1	{
170			#ifdef HAVE_SCROLLBARS
171			int i;
172			short style, width;
173
174	pcg	1.10	# if defined(RXVT_SCROLLBAR)
175	pcg	1.1	style = R_SB_RXVT;
176	pcg	1.10	# elif defined(XTERM_SCROLLBAR)
177			style = R_SB_XTERM;
178			# elif defined(NEXT_SCROLLBAR)
179	pcg	1.1	style = R_SB_NEXT;
180	pcg	1.10	# elif defined(PLAIN_SCROLLBAR)
181			style = R_SB_PLAIN;
182			#else
183			style = R_SB_RXVT;
184	pcg	1.1	# endif
185
186	pcg	1.10	# if (defined(NEXT_SCROLLBAR) \|\| defined(XTERM_SCROLLBAR) \|\| defined(PLAIN_SCROLLBAR))
187	pcg	1.1	if (scrollstyle) {
188			# ifdef NEXT_SCROLLBAR
189			if (STRNCASECMP(scrollstyle, "next", 4) == 0)
190			style = R_SB_NEXT;
191			# endif
192			# ifdef XTERM_SCROLLBAR
193			if (STRNCASECMP(scrollstyle, "xterm", 5) == 0)
194			style = R_SB_XTERM;
195			# endif
196	pcg	1.10	# ifdef PLAIN_SCROLLBAR
197			if (STRNCASECMP(scrollstyle, "plain", 5) == 0)
198			style = R_SB_XTERM;
199			# endif
200	pcg	1.1	}
201			# endif
202			if (style == R_SB_NEXT)
203			width = SB_WIDTH_NEXT;
204			else if (style == R_SB_XTERM)
205			width = SB_WIDTH_XTERM;
206	pcg	1.10	else if (style == R_SB_PLAIN)
207			width = SB_WIDTH_PLAIN;
208	pcg	1.1	else /* if (style == R_SB_RXVT) */
209			width = SB_WIDTH_RXVT;
210
211			if (style != R_SB_NEXT) /* dishonour request - for now */
212			if (thickness && (i = atoi(thickness)) >= SB_WIDTH_MINIMUM)
213			width = min(i, SB_WIDTH_MAXIMUM);
214
215			# if defined(RXVT_SCROLLBAR)
216	pcg	1.8	if (!(Options & Opt_scrollBar_floating) && style == R_SB_RXVT)
217			sb_shadow = SHADOW;
218	pcg	1.1	# endif
219
220	pcg	1.8	scrollBar.style = style;
221			scrollBar.width = width;
222	pcg	1.1
223	pcg	1.8	/* scrollbar_align = R_SB_ALIGN_CENTRE; */
224	pcg	1.1	if (scrollalign) {
225			if (STRNCASECMP(scrollalign, "top", 3) == 0)
226	pcg	1.8	scrollbar_align = R_SB_ALIGN_TOP;
227	pcg	1.1	else if (STRNCASECMP(scrollalign, "bottom", 6) == 0)
228	pcg	1.8	scrollbar_align = R_SB_ALIGN_BOTTOM;
229	pcg	1.1	}
230			#endif
231			}
232
233			/----------------------- end-of-file (C source) -----------------------/
234	pcg	1.10