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;
  int window_sb_x = 0;

  if (option (Opt_scrollBar_right))
    window_sb_x = szHint.width - scrollBar.total_width ();

#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;
    }
  else
    XMoveResizeWindow (dpy, scrollBar.win,
                       window_sb_x, 0,
                       scrollBar.total_width (), szHint.height);

  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 size = (bot - top) * scrollBar.size ();

      scrollBar.top = (scrollBar.beg + (top * scrollBar.size ()) / len);
      scrollBar.len = size / len + scrollBar.min_height () + (size % len > 0);
      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:	1.56
Committed:	Mon Feb 18 09:58:27 2008 UTC (16 years, 3 months ago) by ayin
Content type:	text/plain
Branch:	MAIN
Changes since 1.55:	+2 -3 lines
Log Message:	Simplify.
#	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	ayin	1.55	int window_sb_x = 0;
67
68			if (option (Opt_scrollBar_right))
69			window_sb_x = szHint.width - scrollBar.total_width ();
70	pcg	1.1
71			#define R_SCROLLBEG_XTERM 0
72	pcg	1.6	#define R_SCROLLEND_XTERM szHint.height
73	pcg	1.1	#define R_SCROLLBEG_NEXT 0
74	pcg	1.6	#define R_SCROLLEND_NEXT szHint.height - (SB_BUTTON_TOTAL_HEIGHT + \
75	root	1.25	SB_PADDING)
76	ayin	1.42	#define R_SCROLLBEG_RXVT (scrollBar.width + 1) + scrollBar.shadow
77	pcg	1.6	#define R_SCROLLEND_RXVT szHint.height - R_SCROLLBEG_RXVT - \
78	ayin	1.42	(2 * scrollBar.shadow)
79	pcg	1.1
80	pcg	1.10	#if defined(PLAIN_SCROLLBAR)
81	pcg	1.12	if (scrollBar.style == R_SB_PLAIN)
82			{
83			scrollBar.beg = R_SCROLLBEG_XTERM;
84			scrollBar.end = R_SCROLLEND_XTERM;
85			scrollBar.update = &rxvt_term::scrollbar_show_plain;
86	pcg	1.10	}
87			#endif
88	pcg	1.1	#if defined(XTERM_SCROLLBAR)
89	pcg	1.12	if (scrollBar.style == R_SB_XTERM)
90			{
91			scrollBar.beg = R_SCROLLBEG_XTERM;
92			scrollBar.end = R_SCROLLEND_XTERM;
93			scrollBar.update = &rxvt_term::scrollbar_show_xterm;
94	pcg	1.1	}
95			#endif
96			#if defined(NEXT_SCROLLBAR)
97	pcg	1.12	if (scrollBar.style == R_SB_NEXT)
98			{
99			scrollBar.beg = R_SCROLLBEG_NEXT;
100			scrollBar.end = R_SCROLLEND_NEXT;
101			scrollBar.update = &rxvt_term::scrollbar_show_next;
102	pcg	1.1	}
103			#endif
104			#if defined(RXVT_SCROLLBAR)
105	pcg	1.12	if (scrollBar.style == R_SB_RXVT)
106			{
107			scrollBar.beg = R_SCROLLBEG_RXVT;
108			scrollBar.end = R_SCROLLEND_RXVT;
109			scrollBar.update = &rxvt_term::scrollbar_show_rxvt;
110	pcg	1.1	}
111			#endif
112
113	pcg	1.12	if (!scrollBar.win)
114			{
115			/* create the scrollbar window */
116	root	1.36	scrollBar.win = XCreateSimpleWindow (dpy,
117	root	1.26	parent[0],
118			window_sb_x, 0,
119	ayin	1.52	scrollBar.total_width (),
120	root	1.26	szHint.height,
121			0,
122			pix_colors[Color_fg],
123			pix_colors[Color_border]);
124	ayin	1.47	XDefineCursor (dpy, scrollBar.win, scrollBar.leftptr_cursor);
125	pcg	1.13
126	root	1.36	XSelectInput (dpy, scrollBar.win,
127	pcg	1.13	ExposureMask \| ButtonPressMask \| ButtonReleaseMask
128			\| Button1MotionMask \| Button2MotionMask
129			\| Button3MotionMask);
130			scrollbar_ev.start (display, scrollBar.win);
131
132	pcg	1.12	delayed_init = 1;
133			}
134	ayin	1.55	else
135			XMoveResizeWindow (dpy, scrollBar.win,
136			window_sb_x, 0,
137			scrollBar.total_width (), szHint.height);
138	pcg	1.13
139	pcg	1.12	scrollbar_show (1);
140	pcg	1.13
141	pcg	1.12	if (delayed_init)
142	root	1.36	XMapWindow (dpy, scrollBar.win);
143	pcg	1.1	}
144
145			/*
146			* Update current scrollbar view w.r.t. slider heights, etc.
147			*/
148			int
149	pcg	1.8	rxvt_term::scrollbar_show (int update)
150	pcg	1.1	{
151	pcg	1.12	int ret = 0;
152	pcg	1.1
153	root	1.31	if (!scrollBar.state)
154	pcg	1.12	return 0;
155	pcg	1.1
156	pcg	1.12	if (update)
157			{
158	ayin	1.54	int top = view_start - top_row;
159			int bot = top + (nrow - 1);
160			int len = max (nrow - 1 - top_row, 1);
161	ayin	1.56	int size = (bot - top) * scrollBar.size ();
162	pcg	1.1
163	ayin	1.53	scrollBar.top = (scrollBar.beg + (top * scrollBar.size ()) / len);
164	ayin	1.56	scrollBar.len = size / len + scrollBar.min_height () + (size % len > 0);
165	ayin	1.46	scrollBar.bot = (scrollBar.top + scrollBar.len);
166	pcg	1.12	/* no change */
167	ayin	1.44	if (scrollBar.top == scrollBar.last_top
168			&& scrollBar.bot == scrollBar.last_bot
169	ayin	1.49	&& (scrollBar.state == scrollBar.last_state
170			\|\| !(scrollBar.state == STATE_UP \|\| scrollBar.state == STATE_DOWN)))
171	pcg	1.12	return 0;
172	pcg	1.1	}
173
174	ayin	1.45	ret = (this->*scrollBar.update) (update, scrollBar.last_top, scrollBar.last_bot, scrollBar.len);
175	pcg	1.1
176	ayin	1.44	scrollBar.last_top = scrollBar.top;
177			scrollBar.last_bot = scrollBar.bot;
178			scrollBar.last_state = scrollBar.state;
179	pcg	1.1
180	pcg	1.12	return ret;
181	pcg	1.1	}
182
183			void
184	ayin	1.50	scrollBar_t::setup (rxvt_term *term)
185	pcg	1.1	{
186	pcg	1.12	int i;
187			short style, width;
188	ayin	1.50	const char scrollalign, scrollstyle, *thickness;
189
190			this->term = term;
191			scrollalign = term->rs[Rs_scrollBar_align];
192			scrollstyle = term->rs[Rs_scrollstyle];
193			thickness = term->rs[Rs_scrollBar_thickness];
194	pcg	1.1
195	pcg	1.10	# if defined(RXVT_SCROLLBAR)
196	pcg	1.12	style = R_SB_RXVT;
197	pcg	1.10	# elif defined(XTERM_SCROLLBAR)
198	pcg	1.12	style = R_SB_XTERM;
199	pcg	1.10	# elif defined(NEXT_SCROLLBAR)
200	pcg	1.12	style = R_SB_NEXT;
201	pcg	1.10	# elif defined(PLAIN_SCROLLBAR)
202	pcg	1.12	style = R_SB_PLAIN;
203	pcg	1.10	#else
204	pcg	1.12	style = R_SB_RXVT;
205	pcg	1.1	# endif
206
207	pcg	1.10	# if (defined(NEXT_SCROLLBAR) \|\| defined(XTERM_SCROLLBAR) \|\| defined(PLAIN_SCROLLBAR))
208	pcg	1.12	if (scrollstyle)
209			{
210	pcg	1.1	# ifdef NEXT_SCROLLBAR
211	root	1.19	if (strncasecmp (scrollstyle, "next", 4) == 0)
212	pcg	1.12	style = R_SB_NEXT;
213	pcg	1.1	# endif
214			# ifdef XTERM_SCROLLBAR
215	root	1.19	if (strncasecmp (scrollstyle, "xterm", 5) == 0)
216	pcg	1.12	style = R_SB_XTERM;
217	pcg	1.1	# endif
218	pcg	1.10	# ifdef PLAIN_SCROLLBAR
219	root	1.19	if (strncasecmp (scrollstyle, "plain", 5) == 0)
220	pcg	1.12	style = R_SB_PLAIN;
221	pcg	1.10	# endif
222	pcg	1.12
223	pcg	1.1	}
224			# endif
225	pcg	1.12	if (style == R_SB_NEXT)
226			width = SB_WIDTH_NEXT;
227			else if (style == R_SB_XTERM)
228			width = SB_WIDTH_XTERM;
229			else if (style == R_SB_PLAIN)
230			width = SB_WIDTH_PLAIN;
231			else /* if (style == R_SB_RXVT) */
232			width = SB_WIDTH_RXVT;
233	pcg	1.1
234	pcg	1.12	if (style != R_SB_NEXT) /* dishonour request - for now */
235	pcg	1.14	if (thickness && (i = atoi (thickness)) >= SB_WIDTH_MINIMUM)
236			width = min (i, SB_WIDTH_MAXIMUM);
237	pcg	1.1
238	root	1.32	# ifdef RXVT_SCROLLBAR
239	ayin	1.50	if (! term->option (Opt_scrollBar_floating) && style == R_SB_RXVT)
240	ayin	1.51	shadow = SHADOW_WIDTH;
241	pcg	1.1	# endif
242
243	ayin	1.50	this->style = style;
244			this->width = width;
245	pcg	1.1
246	ayin	1.51	/* align = R_SB_ALIGN_CENTRE; */
247	pcg	1.12	if (scrollalign)
248			{
249	root	1.19	if (strncasecmp (scrollalign, "top", 3) == 0)
250	ayin	1.50	align = R_SB_ALIGN_TOP;
251	root	1.19	else if (strncasecmp (scrollalign, "bottom", 6) == 0)
252	ayin	1.50	align = R_SB_ALIGN_BOTTOM;
253	pcg	1.1	}
254	ayin	1.50	last_bot = last_state = -1;
255	ayin	1.47	/* cursor scrollBar: Black-on-White */
256	ayin	1.50	leftptr_cursor = XCreateFontCursor (term->dpy, XC_left_ptr);
257	pcg	1.1	}
258
259			/----------------------- end-of-file (C source) -----------------------/
260	pcg	1.10