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(display->display, scrollBar.win);
          change = 1;
        }
    }
  else if (!map && scrollbar_visible())
    {
      scrollBar.state = 0;
      XUnmapWindow(display->display, 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(display->display,
                                          TermWin.parent[0],
                                          window_sb_x, 0,
                                          scrollbar_TotalWidth(),
                                          szHint.height,
                                          0,
                                          PixColors[Color_fg],
                                          PixColors[Color_bg]);
#ifdef DEBUG_X
      XStoreName(display->display, scrollBar.win, "scrollbar");
#endif
      XDefineCursor(display->display, scrollBar.win, leftptr_cursor);

      XSelectInput(display->display, scrollBar.win,
                   ExposureMask | ButtonPressMask | ButtonReleaseMask
                   | Button1MotionMask | Button2MotionMask
                   | Button3MotionMask);
      scrollbar_ev.start (display, scrollBar.win);

      delayed_init = 1;
    }

  scrollbar_show (1);

  if (delayed_init)
    XMapWindow (display->display, 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_PLAIN;
#  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:	1.13
Committed:	Mon Feb 9 07:11:49 2004 UTC (20 years, 3 months ago) by pcg
Content type:	text/plain
Branch:	MAIN
Changes since 1.12:	+15 -10 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	pcg	1.12	int change = 0;
38	pcg	1.6
39	pcg	1.1	#ifdef HAVE_SCROLLBARS
40	pcg	1.12	if (map && !scrollbar_visible())
41			{
42			scrollBar.setIdle ();
43			if (!scrollBar.win)
44			resize_scrollbar ();
45			if (scrollBar.win)
46			{
47	pcg	1.13	XMapWindow(display->display, scrollBar.win);
48	pcg	1.12	change = 1;
49			}
50			}
51			else if (!map && scrollbar_visible())
52			{
53			scrollBar.state = 0;
54	pcg	1.13	XUnmapWindow(display->display, scrollBar.win);
55	pcg	1.12	change = 1;
56	pcg	1.1	}
57			#endif
58	pcg	1.12	return change;
59	pcg	1.1	}
60
61			void
62	pcg	1.6	rxvt_term::resize_scrollbar ()
63	pcg	1.1	{
64			#ifdef HAVE_SCROLLBARS
65	pcg	1.12	int delayed_init = 0;
66	pcg	1.1
67			#define R_SCROLLBEG_XTERM 0
68	pcg	1.6	#define R_SCROLLEND_XTERM szHint.height
69	pcg	1.1	#define R_SCROLLBEG_NEXT 0
70	pcg	1.6	#define R_SCROLLEND_NEXT szHint.height - (SB_BUTTON_TOTAL_HEIGHT + \
71	pcg	1.1	SB_PADDING)
72	pcg	1.6	#define R_SCROLLBEG_RXVT (scrollBar.width + 1) + sb_shadow
73			#define R_SCROLLEND_RXVT szHint.height - R_SCROLLBEG_RXVT - \
74			(2 * sb_shadow)
75	pcg	1.1
76	pcg	1.10	#if defined(PLAIN_SCROLLBAR)
77	pcg	1.12	if (scrollBar.style == R_SB_PLAIN)
78			{
79			scrollBar.beg = R_SCROLLBEG_XTERM;
80			scrollBar.end = R_SCROLLEND_XTERM;
81			scrollBar.update = &rxvt_term::scrollbar_show_plain;
82	pcg	1.10	}
83			#endif
84	pcg	1.1	#if defined(XTERM_SCROLLBAR)
85	pcg	1.12	if (scrollBar.style == R_SB_XTERM)
86			{
87			scrollBar.beg = R_SCROLLBEG_XTERM;
88			scrollBar.end = R_SCROLLEND_XTERM;
89			scrollBar.update = &rxvt_term::scrollbar_show_xterm;
90	pcg	1.1	}
91			#endif
92			#if defined(NEXT_SCROLLBAR)
93	pcg	1.12	if (scrollBar.style == R_SB_NEXT)
94			{
95			scrollBar.beg = R_SCROLLBEG_NEXT;
96			scrollBar.end = R_SCROLLEND_NEXT;
97			scrollBar.update = &rxvt_term::scrollbar_show_next;
98	pcg	1.1	}
99			#endif
100			#if defined(RXVT_SCROLLBAR)
101	pcg	1.12	if (scrollBar.style == R_SB_RXVT)
102			{
103			scrollBar.beg = R_SCROLLBEG_RXVT;
104			scrollBar.end = R_SCROLLEND_RXVT;
105			scrollBar.update = &rxvt_term::scrollbar_show_rxvt;
106	pcg	1.1	}
107			#endif
108
109	pcg	1.12	if (!scrollBar.win)
110			{
111			/* create the scrollbar window */
112	pcg	1.13	scrollBar.win = XCreateSimpleWindow(display->display,
113	pcg	1.12	TermWin.parent[0],
114			window_sb_x, 0,
115			scrollbar_TotalWidth(),
116			szHint.height,
117			0,
118			PixColors[Color_fg],
119			PixColors[Color_bg]);
120	pcg	1.1	#ifdef DEBUG_X
121	pcg	1.13	XStoreName(display->display, scrollBar.win, "scrollbar");
122	pcg	1.1	#endif
123	pcg	1.13	XDefineCursor(display->display, scrollBar.win, leftptr_cursor);
124
125			XSelectInput(display->display, scrollBar.win,
126			ExposureMask \| ButtonPressMask \| ButtonReleaseMask
127			\| Button1MotionMask \| Button2MotionMask
128			\| Button3MotionMask);
129			scrollbar_ev.start (display, scrollBar.win);
130
131	pcg	1.12	delayed_init = 1;
132			}
133	pcg	1.13
134	pcg	1.12	scrollbar_show (1);
135	pcg	1.13
136	pcg	1.12	if (delayed_init)
137	pcg	1.13	XMapWindow (display->display, scrollBar.win);
138	pcg	1.1	#endif
139			}
140
141			/*
142			* Update current scrollbar view w.r.t. slider heights, etc.
143			*/
144			int
145	pcg	1.8	rxvt_term::scrollbar_show (int update)
146	pcg	1.1	{
147	pcg	1.12	int ret = 0;
148	pcg	1.1	#ifdef HAVE_SCROLLBARS
149	pcg	1.12	int top, bot, len, adj;
150	pcg	1.1
151	pcg	1.12	if (!scrollbar_visible())
152			return 0;
153	pcg	1.1
154	pcg	1.12	if (update)
155			{
156			top = (TermWin.nscrolled - TermWin.view_start);
157			bot = top + (TermWin.nrow - 1);
158			len = max((TermWin.nscrolled + (TermWin.nrow - 1)), 1);
159			adj = (((bot - top) * scrollbar_size()) % len) > 0 ? 1 : 0;
160	pcg	1.1
161	pcg	1.12	scrollBar.top = (scrollBar.beg + (top * scrollbar_size()) / len);
162			scrollbar_len = ((bot - top) * scrollbar_size()) / len +
163			scrollbar_minheight() + adj;
164			scrollBar.bot = (scrollBar.top + scrollbar_len);
165			/* no change */
166			if (scrollBar.top == last_top
167			&& scrollBar.bot == last_bot
168			&& (scrollBar.state == last_state \|\| !scrollbar_isUpDn()))
169			return 0;
170	pcg	1.1	}
171
172	pcg	1.12	ret = (this->*scrollBar.update) (update, last_top, last_bot, scrollbar_len);
173	pcg	1.1
174	pcg	1.12	last_top = scrollBar.top;
175			last_bot = scrollBar.bot;
176			last_state = scrollBar.state;
177	pcg	1.7	#endif
178	pcg	1.1
179	pcg	1.12	return ret;
180	pcg	1.1	}
181
182			void
183	pcg	1.8	rxvt_term::setup_scrollbar (const char scrollalign, const char scrollstyle, const char *thickness)
184	pcg	1.1	{
185			#ifdef HAVE_SCROLLBARS
186	pcg	1.12	int i;
187			short style, width;
188	pcg	1.1
189	pcg	1.10	# if defined(RXVT_SCROLLBAR)
190	pcg	1.12	style = R_SB_RXVT;
191	pcg	1.10	# elif defined(XTERM_SCROLLBAR)
192	pcg	1.12	style = R_SB_XTERM;
193	pcg	1.10	# elif defined(NEXT_SCROLLBAR)
194	pcg	1.12	style = R_SB_NEXT;
195	pcg	1.10	# elif defined(PLAIN_SCROLLBAR)
196	pcg	1.12	style = R_SB_PLAIN;
197	pcg	1.10	#else
198	pcg	1.12	style = R_SB_RXVT;
199	pcg	1.1	# endif
200
201	pcg	1.10	# if (defined(NEXT_SCROLLBAR) \|\| defined(XTERM_SCROLLBAR) \|\| defined(PLAIN_SCROLLBAR))
202	pcg	1.12	if (scrollstyle)
203			{
204	pcg	1.1	# ifdef NEXT_SCROLLBAR
205	pcg	1.12	if (STRNCASECMP(scrollstyle, "next", 4) == 0)
206			style = R_SB_NEXT;
207	pcg	1.1	# endif
208			# ifdef XTERM_SCROLLBAR
209	pcg	1.12	if (STRNCASECMP(scrollstyle, "xterm", 5) == 0)
210			style = R_SB_XTERM;
211	pcg	1.1	# endif
212	pcg	1.10	# ifdef PLAIN_SCROLLBAR
213	pcg	1.12	if (STRNCASECMP(scrollstyle, "plain", 5) == 0)
214			style = R_SB_PLAIN;
215	pcg	1.10	# endif
216	pcg	1.12
217	pcg	1.1	}
218			# endif
219	pcg	1.12	if (style == R_SB_NEXT)
220			width = SB_WIDTH_NEXT;
221			else if (style == R_SB_XTERM)
222			width = SB_WIDTH_XTERM;
223			else if (style == R_SB_PLAIN)
224			width = SB_WIDTH_PLAIN;
225			else /* if (style == R_SB_RXVT) */
226			width = SB_WIDTH_RXVT;
227	pcg	1.1
228	pcg	1.12	if (style != R_SB_NEXT) /* dishonour request - for now */
229	pcg	1.1	if (thickness && (i = atoi(thickness)) >= SB_WIDTH_MINIMUM)
230	pcg	1.12	width = min(i, SB_WIDTH_MAXIMUM);
231	pcg	1.1
232			# if defined(RXVT_SCROLLBAR)
233	pcg	1.12	if (!(Options & Opt_scrollBar_floating) && style == R_SB_RXVT)
234			sb_shadow = SHADOW;
235	pcg	1.1	# endif
236
237	pcg	1.12	scrollBar.style = style;
238			scrollBar.width = width;
239	pcg	1.1
240	pcg	1.12	/* scrollbar_align = R_SB_ALIGN_CENTRE; */
241			if (scrollalign)
242			{
243			if (STRNCASECMP(scrollalign, "top", 3) == 0)
244			scrollbar_align = R_SB_ALIGN_TOP;
245			else if (STRNCASECMP(scrollalign, "bottom", 6) == 0)
246			scrollbar_align = R_SB_ALIGN_BOTTOM;
247	pcg	1.1	}
248			#endif
249			}
250
251			/----------------------- end-of-file (C source) -----------------------/
252	pcg	1.10