rxvt-unicode/src/scrollbar.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>
 * Copyright (c) 2004-2006 Marc Lehmann <pcg@goof.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 */

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

/*
 * 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.setIdle ();

      if (!scrollBar.win)
        resize_scrollbar ();

      if (scrollBar.win)
        {
          XMapWindow (dpy, scrollBar.win);
          change = 1;
        }
    }
  else
    {
      scrollBar.state = 0;
      XUnmapWindow (dpy, 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) + scrollBar.shadow
#define R_SCROLLEND_RXVT        szHint.height - R_SCROLLBEG_RXVT - \
                                    (2 * scrollBar.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 (dpy,
                                           parent[0],
                                           window_sb_x, 0,
                                           scrollbar_TotalWidth (),
                                           szHint.height,
                                           0,
                                           pix_colors[Color_fg],
                                           pix_colors[Color_border]);
      XDefineCursor (dpy, scrollBar.win, leftptr_cursor);

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

      delayed_init = 1;
    }

  scrollbar_show (1);

  if (delayed_init)
    XMapWindow (dpy, 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;
  int             scrollbar_len = 0;

  if (!scrollBar.state)
    return 0;

  if (update)
    {
      top = view_start - top_row;
      bot = top + (nrow - 1);
      len = max (nrow - 1 - top_row, 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);

# ifdef RXVT_SCROLLBAR
  if (! option (Opt_scrollBar_floating) && style == R_SB_RXVT)
    scrollBar.shadow = SHADOW_WIDTH;
# 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:	1.42
Committed:	Sat Dec 29 14:43:44 2007 UTC (16 years, 4 months ago) by ayin
Content type:	text/plain
Branch:	MAIN
Changes since 1.41:	+3 -3 lines
Log Message:	Rename 'sb_shadow' scrollBar_t field to 'shadow'.
#	User	Rev	Content
1	root	1.38	/----------------------------------------------------------------------
2	pcg	1.15	* File: scrollbar.C
3	pcg	1.1	----------------------------------------------------------------------
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	root	1.37	* Copyright (c) 2004-2006 Marc Lehmann <pcg@goof.com>
10	pcg	1.1	*
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
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	root	1.35	int change = 0;
38	pcg	1.6
39	pcg	1.1	#ifdef HAVE_SCROLLBARS
40	root	1.24	if (map)
41	pcg	1.12	{
42			scrollBar.setIdle ();
43	root	1.24
44	pcg	1.12	if (!scrollBar.win)
45			resize_scrollbar ();
46	root	1.24
47	pcg	1.12	if (scrollBar.win)
48			{
49	root	1.36	XMapWindow (dpy, scrollBar.win);
50	pcg	1.12	change = 1;
51			}
52			}
53	root	1.24	else
54	pcg	1.12	{
55			scrollBar.state = 0;
56	root	1.36	XUnmapWindow (dpy, scrollBar.win);
57	pcg	1.12	change = 1;
58	pcg	1.1	}
59			#endif
60	root	1.35
61	pcg	1.12	return change;
62	pcg	1.1	}
63
64			void
65	pcg	1.6	rxvt_term::resize_scrollbar ()
66	pcg	1.1	{
67			#ifdef HAVE_SCROLLBARS
68	pcg	1.12	int delayed_init = 0;
69	pcg	1.1
70			#define R_SCROLLBEG_XTERM 0
71	pcg	1.6	#define R_SCROLLEND_XTERM szHint.height
72	pcg	1.1	#define R_SCROLLBEG_NEXT 0
73	pcg	1.6	#define R_SCROLLEND_NEXT szHint.height - (SB_BUTTON_TOTAL_HEIGHT + \
74	root	1.25	SB_PADDING)
75	ayin	1.42	#define R_SCROLLBEG_RXVT (scrollBar.width + 1) + scrollBar.shadow
76	pcg	1.6	#define R_SCROLLEND_RXVT szHint.height - R_SCROLLBEG_RXVT - \
77	ayin	1.42	(2 * scrollBar.shadow)
78	pcg	1.1
79	pcg	1.10	#if defined(PLAIN_SCROLLBAR)
80	pcg	1.12	if (scrollBar.style == R_SB_PLAIN)
81			{
82			scrollBar.beg = R_SCROLLBEG_XTERM;
83			scrollBar.end = R_SCROLLEND_XTERM;
84			scrollBar.update = &rxvt_term::scrollbar_show_plain;
85	pcg	1.10	}
86			#endif
87	pcg	1.1	#if defined(XTERM_SCROLLBAR)
88	pcg	1.12	if (scrollBar.style == R_SB_XTERM)
89			{
90			scrollBar.beg = R_SCROLLBEG_XTERM;
91			scrollBar.end = R_SCROLLEND_XTERM;
92			scrollBar.update = &rxvt_term::scrollbar_show_xterm;
93	pcg	1.1	}
94			#endif
95			#if defined(NEXT_SCROLLBAR)
96	pcg	1.12	if (scrollBar.style == R_SB_NEXT)
97			{
98			scrollBar.beg = R_SCROLLBEG_NEXT;
99			scrollBar.end = R_SCROLLEND_NEXT;
100			scrollBar.update = &rxvt_term::scrollbar_show_next;
101	pcg	1.1	}
102			#endif
103			#if defined(RXVT_SCROLLBAR)
104	pcg	1.12	if (scrollBar.style == R_SB_RXVT)
105			{
106			scrollBar.beg = R_SCROLLBEG_RXVT;
107			scrollBar.end = R_SCROLLEND_RXVT;
108			scrollBar.update = &rxvt_term::scrollbar_show_rxvt;
109	pcg	1.1	}
110			#endif
111
112	pcg	1.12	if (!scrollBar.win)
113			{
114			/* create the scrollbar window */
115	root	1.36	scrollBar.win = XCreateSimpleWindow (dpy,
116	root	1.26	parent[0],
117			window_sb_x, 0,
118			scrollbar_TotalWidth (),
119			szHint.height,
120			0,
121			pix_colors[Color_fg],
122			pix_colors[Color_border]);
123	root	1.36	XDefineCursor (dpy, scrollBar.win, leftptr_cursor);
124	pcg	1.13
125	root	1.36	XSelectInput (dpy, scrollBar.win,
126	pcg	1.13	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	root	1.36	XMapWindow (dpy, 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	ayin	1.41	int scrollbar_len = 0;
151	pcg	1.1
152	root	1.31	if (!scrollBar.state)
153	pcg	1.12	return 0;
154	pcg	1.1
155	pcg	1.12	if (update)
156			{
157	root	1.30	top = view_start - top_row;
158	root	1.26	bot = top + (nrow - 1);
159	root	1.30	len = max (nrow - 1 - top_row, 1);
160	pcg	1.14	adj = (((bot - top) * scrollbar_size ()) % len) > 0 ? 1 : 0;
161	pcg	1.1
162	pcg	1.14	scrollBar.top = (scrollBar.beg + (top * scrollbar_size ()) / len);
163			scrollbar_len = ((bot - top) * scrollbar_size ()) / len +
164			scrollbar_minheight () + adj;
165	pcg	1.12	scrollBar.bot = (scrollBar.top + scrollbar_len);
166			/* no change */
167			if (scrollBar.top == last_top
168			&& scrollBar.bot == last_bot
169	pcg	1.14	&& (scrollBar.state == last_state \|\| !scrollbar_isUpDn ()))
170	pcg	1.12	return 0;
171	pcg	1.1	}
172
173	pcg	1.12	ret = (this->*scrollBar.update) (update, last_top, last_bot, scrollbar_len);
174	pcg	1.1
175	pcg	1.12	last_top = scrollBar.top;
176			last_bot = scrollBar.bot;
177			last_state = scrollBar.state;
178	pcg	1.7	#endif
179	pcg	1.1
180	pcg	1.12	return ret;
181	pcg	1.1	}
182
183			void
184	pcg	1.8	rxvt_term::setup_scrollbar (const char scrollalign, const char scrollstyle, const char *thickness)
185	pcg	1.1	{
186			#ifdef HAVE_SCROLLBARS
187	pcg	1.12	int i;
188			short style, width;
189	pcg	1.1
190	pcg	1.10	# if defined(RXVT_SCROLLBAR)
191	pcg	1.12	style = R_SB_RXVT;
192	pcg	1.10	# elif defined(XTERM_SCROLLBAR)
193	pcg	1.12	style = R_SB_XTERM;
194	pcg	1.10	# elif defined(NEXT_SCROLLBAR)
195	pcg	1.12	style = R_SB_NEXT;
196	pcg	1.10	# elif defined(PLAIN_SCROLLBAR)
197	pcg	1.12	style = R_SB_PLAIN;
198	pcg	1.10	#else
199	pcg	1.12	style = R_SB_RXVT;
200	pcg	1.1	# endif
201
202	pcg	1.10	# if (defined(NEXT_SCROLLBAR) \|\| defined(XTERM_SCROLLBAR) \|\| defined(PLAIN_SCROLLBAR))
203	pcg	1.12	if (scrollstyle)
204			{
205	pcg	1.1	# ifdef NEXT_SCROLLBAR
206	root	1.19	if (strncasecmp (scrollstyle, "next", 4) == 0)
207	pcg	1.12	style = R_SB_NEXT;
208	pcg	1.1	# endif
209			# ifdef XTERM_SCROLLBAR
210	root	1.19	if (strncasecmp (scrollstyle, "xterm", 5) == 0)
211	pcg	1.12	style = R_SB_XTERM;
212	pcg	1.1	# endif
213	pcg	1.10	# ifdef PLAIN_SCROLLBAR
214	root	1.19	if (strncasecmp (scrollstyle, "plain", 5) == 0)
215	pcg	1.12	style = R_SB_PLAIN;
216	pcg	1.10	# endif
217	pcg	1.12
218	pcg	1.1	}
219			# endif
220	pcg	1.12	if (style == R_SB_NEXT)
221			width = SB_WIDTH_NEXT;
222			else if (style == R_SB_XTERM)
223			width = SB_WIDTH_XTERM;
224			else if (style == R_SB_PLAIN)
225			width = SB_WIDTH_PLAIN;
226			else /* if (style == R_SB_RXVT) */
227			width = SB_WIDTH_RXVT;
228	pcg	1.1
229	pcg	1.12	if (style != R_SB_NEXT) /* dishonour request - for now */
230	pcg	1.14	if (thickness && (i = atoi (thickness)) >= SB_WIDTH_MINIMUM)
231			width = min (i, SB_WIDTH_MAXIMUM);
232	pcg	1.1
233	root	1.32	# ifdef RXVT_SCROLLBAR
234	root	1.39	if (! option (Opt_scrollBar_floating) && style == R_SB_RXVT)
235	ayin	1.42	scrollBar.shadow = SHADOW_WIDTH;
236	pcg	1.1	# endif
237
238	pcg	1.12	scrollBar.style = style;
239			scrollBar.width = width;
240	pcg	1.1
241	pcg	1.12	/* scrollbar_align = R_SB_ALIGN_CENTRE; */
242			if (scrollalign)
243			{
244	root	1.19	if (strncasecmp (scrollalign, "top", 3) == 0)
245	pcg	1.12	scrollbar_align = R_SB_ALIGN_TOP;
246	root	1.19	else if (strncasecmp (scrollalign, "bottom", 6) == 0)
247	pcg	1.12	scrollbar_align = R_SB_ALIGN_BOTTOM;
248	pcg	1.1	}
249			#endif
250			}
251
252			/----------------------- end-of-file (C source) -----------------------/
253	pcg	1.10