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;

  if (map)
    {
      scrollBar.state = STATE_IDLE;

      if (!scrollBar.win)
        resize_scrollbar ();

      if (scrollBar.win)
        {
          XMapWindow (dpy, scrollBar.win);
          change = 1;
        }
    }
  else
    {
      scrollBar.state = 0;
      XUnmapWindow (dpy, scrollBar.win);
      change = 1;
    }

  return change;
}

void
rxvt_term::resize_scrollbar ()
{
  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.total_width (),
                                           szHint.height,
                                           0,
                                           pix_colors[Color_fg],
                                           pix_colors[Color_border]);
      XDefineCursor (dpy, scrollBar.win, scrollBar.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);
}

/*
 * Update current scrollbar view w.r.t. slider heights, etc.
 */
int
rxvt_term::scrollbar_show (int update)
{
  int             ret = 0;

  if (!scrollBar.state)
    return 0;

  if (update)
    {
      int top = view_start - top_row;
      int bot = top + (nrow - 1);
      int len = max (nrow - 1 - top_row, 1);
      int 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.min_height () + adj;
      scrollBar.bot = (scrollBar.top + scrollBar.len);
      /* no change */
      if (scrollBar.top == scrollBar.last_top
          && scrollBar.bot == scrollBar.last_bot
          && (scrollBar.state == scrollBar.last_state
              || !(scrollBar.state == STATE_UP || scrollBar.state == STATE_DOWN)))
        return 0;
    }

  ret = (this->*scrollBar.update) (update, scrollBar.last_top, scrollBar.last_bot, scrollBar.len);

  scrollBar.last_top = scrollBar.top;
  scrollBar.last_bot = scrollBar.bot;
  scrollBar.last_state = scrollBar.state;

  return ret;
}

void
scrollBar_t::setup (rxvt_term *term)
{
  int             i;
  short           style, width;
  const char *scrollalign, *scrollstyle, *thickness;

  this->term = term;
  scrollalign = term->rs[Rs_scrollBar_align];
  scrollstyle = term->rs[Rs_scrollstyle];
  thickness = term->rs[Rs_scrollBar_thickness];

# 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 (! term->option (Opt_scrollBar_floating) && style == R_SB_RXVT)
    shadow = SHADOW_WIDTH;
# endif

  this->style = style;
  this->width = width;

  /* align = R_SB_ALIGN_CENTRE; */
  if (scrollalign)
    {
      if (strncasecmp (scrollalign, "top", 3) == 0)
        align = R_SB_ALIGN_TOP;
      else if (strncasecmp (scrollalign, "bottom", 6) == 0)
        align = R_SB_ALIGN_BOTTOM;
    }
  last_bot = last_state = -1;
  /* cursor scrollBar: Black-on-White */
  leftptr_cursor = XCreateFontCursor (term->dpy, XC_left_ptr);
}

/*----------------------- end-of-file (C source) -----------------------*/

Revision:	1.54
Committed:	Sun Feb 17 12:21:45 2008 UTC (16 years, 3 months ago) by ayin
Content type:	text/plain
Branch:	MAIN
Changes since 1.53:	+4 -5 lines
Log Message:	Move variables to the scope where they are used.
#	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	root	1.24	if (map)
40	pcg	1.12	{
41	ayin	1.49	scrollBar.state = STATE_IDLE;
42	root	1.24
43	pcg	1.12	if (!scrollBar.win)
44			resize_scrollbar ();
45	root	1.24
46	pcg	1.12	if (scrollBar.win)
47			{
48	root	1.36	XMapWindow (dpy, scrollBar.win);
49	pcg	1.12	change = 1;
50			}
51			}
52	root	1.24	else
53	pcg	1.12	{
54			scrollBar.state = 0;
55	root	1.36	XUnmapWindow (dpy, scrollBar.win);
56	pcg	1.12	change = 1;
57	pcg	1.1	}
58	root	1.35
59	pcg	1.12	return change;
60	pcg	1.1	}
61
62			void
63	pcg	1.6	rxvt_term::resize_scrollbar ()
64	pcg	1.1	{
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	root	1.25	SB_PADDING)
72	ayin	1.42	#define R_SCROLLBEG_RXVT (scrollBar.width + 1) + scrollBar.shadow
73	pcg	1.6	#define R_SCROLLEND_RXVT szHint.height - R_SCROLLBEG_RXVT - \
74	ayin	1.42	(2 * scrollBar.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	root	1.36	scrollBar.win = XCreateSimpleWindow (dpy,
113	root	1.26	parent[0],
114			window_sb_x, 0,
115	ayin	1.52	scrollBar.total_width (),
116	root	1.26	szHint.height,
117			0,
118			pix_colors[Color_fg],
119			pix_colors[Color_border]);
120	ayin	1.47	XDefineCursor (dpy, scrollBar.win, scrollBar.leftptr_cursor);
121	pcg	1.13
122	root	1.36	XSelectInput (dpy, scrollBar.win,
123	pcg	1.13	ExposureMask \| ButtonPressMask \| ButtonReleaseMask
124			\| Button1MotionMask \| Button2MotionMask
125			\| Button3MotionMask);
126			scrollbar_ev.start (display, scrollBar.win);
127
128	pcg	1.12	delayed_init = 1;
129			}
130	pcg	1.13
131	pcg	1.12	scrollbar_show (1);
132	pcg	1.13
133	pcg	1.12	if (delayed_init)
134	root	1.36	XMapWindow (dpy, scrollBar.win);
135	pcg	1.1	}
136
137			/*
138			* Update current scrollbar view w.r.t. slider heights, etc.
139			*/
140			int
141	pcg	1.8	rxvt_term::scrollbar_show (int update)
142	pcg	1.1	{
143	pcg	1.12	int ret = 0;
144	pcg	1.1
145	root	1.31	if (!scrollBar.state)
146	pcg	1.12	return 0;
147	pcg	1.1
148	pcg	1.12	if (update)
149			{
150	ayin	1.54	int top = view_start - top_row;
151			int bot = top + (nrow - 1);
152			int len = max (nrow - 1 - top_row, 1);
153			int adj = (((bot - top) * scrollBar.size ()) % len) > 0 ? 1 : 0;
154	pcg	1.1
155	ayin	1.53	scrollBar.top = (scrollBar.beg + (top * scrollBar.size ()) / len);
156			scrollBar.len = ((bot - top) * scrollBar.size ()) / len +
157			scrollBar.min_height () + adj;
158	ayin	1.46	scrollBar.bot = (scrollBar.top + scrollBar.len);
159	pcg	1.12	/* no change */
160	ayin	1.44	if (scrollBar.top == scrollBar.last_top
161			&& scrollBar.bot == scrollBar.last_bot
162	ayin	1.49	&& (scrollBar.state == scrollBar.last_state
163			\|\| !(scrollBar.state == STATE_UP \|\| scrollBar.state == STATE_DOWN)))
164	pcg	1.12	return 0;
165	pcg	1.1	}
166
167	ayin	1.45	ret = (this->*scrollBar.update) (update, scrollBar.last_top, scrollBar.last_bot, scrollBar.len);
168	pcg	1.1
169	ayin	1.44	scrollBar.last_top = scrollBar.top;
170			scrollBar.last_bot = scrollBar.bot;
171			scrollBar.last_state = scrollBar.state;
172	pcg	1.1
173	pcg	1.12	return ret;
174	pcg	1.1	}
175
176			void
177	ayin	1.50	scrollBar_t::setup (rxvt_term *term)
178	pcg	1.1	{
179	pcg	1.12	int i;
180			short style, width;
181	ayin	1.50	const char scrollalign, scrollstyle, *thickness;
182
183			this->term = term;
184			scrollalign = term->rs[Rs_scrollBar_align];
185			scrollstyle = term->rs[Rs_scrollstyle];
186			thickness = term->rs[Rs_scrollBar_thickness];
187	pcg	1.1
188	pcg	1.10	# if defined(RXVT_SCROLLBAR)
189	pcg	1.12	style = R_SB_RXVT;
190	pcg	1.10	# elif defined(XTERM_SCROLLBAR)
191	pcg	1.12	style = R_SB_XTERM;
192	pcg	1.10	# elif defined(NEXT_SCROLLBAR)
193	pcg	1.12	style = R_SB_NEXT;
194	pcg	1.10	# elif defined(PLAIN_SCROLLBAR)
195	pcg	1.12	style = R_SB_PLAIN;
196	pcg	1.10	#else
197	pcg	1.12	style = R_SB_RXVT;
198	pcg	1.1	# endif
199
200	pcg	1.10	# if (defined(NEXT_SCROLLBAR) \|\| defined(XTERM_SCROLLBAR) \|\| defined(PLAIN_SCROLLBAR))
201	pcg	1.12	if (scrollstyle)
202			{
203	pcg	1.1	# ifdef NEXT_SCROLLBAR
204	root	1.19	if (strncasecmp (scrollstyle, "next", 4) == 0)
205	pcg	1.12	style = R_SB_NEXT;
206	pcg	1.1	# endif
207			# ifdef XTERM_SCROLLBAR
208	root	1.19	if (strncasecmp (scrollstyle, "xterm", 5) == 0)
209	pcg	1.12	style = R_SB_XTERM;
210	pcg	1.1	# endif
211	pcg	1.10	# ifdef PLAIN_SCROLLBAR
212	root	1.19	if (strncasecmp (scrollstyle, "plain", 5) == 0)
213	pcg	1.12	style = R_SB_PLAIN;
214	pcg	1.10	# endif
215	pcg	1.12
216	pcg	1.1	}
217			# endif
218	pcg	1.12	if (style == R_SB_NEXT)
219			width = SB_WIDTH_NEXT;
220			else if (style == R_SB_XTERM)
221			width = SB_WIDTH_XTERM;
222			else if (style == R_SB_PLAIN)
223			width = SB_WIDTH_PLAIN;
224			else /* if (style == R_SB_RXVT) */
225			width = SB_WIDTH_RXVT;
226	pcg	1.1
227	pcg	1.12	if (style != R_SB_NEXT) /* dishonour request - for now */
228	pcg	1.14	if (thickness && (i = atoi (thickness)) >= SB_WIDTH_MINIMUM)
229			width = min (i, SB_WIDTH_MAXIMUM);
230	pcg	1.1
231	root	1.32	# ifdef RXVT_SCROLLBAR
232	ayin	1.50	if (! term->option (Opt_scrollBar_floating) && style == R_SB_RXVT)
233	ayin	1.51	shadow = SHADOW_WIDTH;
234	pcg	1.1	# endif
235
236	ayin	1.50	this->style = style;
237			this->width = width;
238	pcg	1.1
239	ayin	1.51	/* align = R_SB_ALIGN_CENTRE; */
240	pcg	1.12	if (scrollalign)
241			{
242	root	1.19	if (strncasecmp (scrollalign, "top", 3) == 0)
243	ayin	1.50	align = R_SB_ALIGN_TOP;
244	root	1.19	else if (strncasecmp (scrollalign, "bottom", 6) == 0)
245	ayin	1.50	align = R_SB_ALIGN_BOTTOM;
246	pcg	1.1	}
247	ayin	1.50	last_bot = last_state = -1;
248	ayin	1.47	/* cursor scrollBar: Black-on-White */
249	ayin	1.50	leftptr_cursor = XCreateFontCursor (term->dpy, XC_left_ptr);
250	pcg	1.1	}
251
252			/----------------------- end-of-file (C source) -----------------------/
253	pcg	1.10