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 ();

  scrollBar.update_data ();

  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 refresh)
{
  int             ret = 0;

  if (!scrollBar.state)
    return 0;

  if (refresh)
    {
      int sb_top = view_start - top_row;
      int sb_bot = sb_top + (nrow - 1);
      int sb_len = max (nrow - 1 - top_row, 1);
      int sb_size = (sb_bot - sb_top) * scrollBar.size ();

      scrollBar.top = (scrollBar.beg + (sb_top * scrollBar.size ()) / sb_len);
      scrollBar.len = sb_size / sb_len + scrollBar.min_height () + (sb_size % sb_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) (refresh, 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);
}

void
scrollBar_t::update_data ()
{
#if defined(PLAIN_SCROLLBAR)
  if (style == R_SB_PLAIN)
    {
      beg = 0;
      end = term->szHint.height;
      update = &rxvt_term::scrollbar_show_plain;
    }
#endif
#if defined(XTERM_SCROLLBAR)
  if (style == R_SB_XTERM)
    {
      beg = 0;
      end = term->szHint.height;
      update = &rxvt_term::scrollbar_show_xterm;
    }
#endif
#if defined(NEXT_SCROLLBAR)
  if (style == R_SB_NEXT)
    {
      beg = 0;
      end = term->szHint.height - (SB_BUTTON_TOTAL_HEIGHT + SB_PADDING);
      update = &rxvt_term::scrollbar_show_next;
    }
#endif
#if defined(RXVT_SCROLLBAR)
  if (style == R_SB_RXVT)
    {
      beg = (width + 1) + shadow;
      end = term->szHint.height - beg - (2 * shadow);
      update = &rxvt_term::scrollbar_show_rxvt;
    }
#endif
}

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

Revision:	1.58
Committed:	Mon Feb 18 11:42:23 2008 UTC (16 years, 3 months ago) by ayin
Content type:	text/plain
Branch:	MAIN
Changes since 1.57:	+9 -9 lines
Log Message:	Rename some variables.
#	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	ayin	1.57	scrollBar.update_data ();
72	pcg	1.1
73	pcg	1.12	if (!scrollBar.win)
74			{
75			/* create the scrollbar window */
76	root	1.36	scrollBar.win = XCreateSimpleWindow (dpy,
77	root	1.26	parent[0],
78			window_sb_x, 0,
79	ayin	1.52	scrollBar.total_width (),
80	root	1.26	szHint.height,
81			0,
82			pix_colors[Color_fg],
83			pix_colors[Color_border]);
84	ayin	1.47	XDefineCursor (dpy, scrollBar.win, scrollBar.leftptr_cursor);
85	pcg	1.13
86	root	1.36	XSelectInput (dpy, scrollBar.win,
87	pcg	1.13	ExposureMask \| ButtonPressMask \| ButtonReleaseMask
88			\| Button1MotionMask \| Button2MotionMask
89			\| Button3MotionMask);
90			scrollbar_ev.start (display, scrollBar.win);
91
92	pcg	1.12	delayed_init = 1;
93			}
94	ayin	1.55	else
95			XMoveResizeWindow (dpy, scrollBar.win,
96			window_sb_x, 0,
97			scrollBar.total_width (), szHint.height);
98	pcg	1.13
99	pcg	1.12	scrollbar_show (1);
100	pcg	1.13
101	pcg	1.12	if (delayed_init)
102	root	1.36	XMapWindow (dpy, scrollBar.win);
103	pcg	1.1	}
104
105			/*
106			* Update current scrollbar view w.r.t. slider heights, etc.
107			*/
108			int
109	ayin	1.58	rxvt_term::scrollbar_show (int refresh)
110	pcg	1.1	{
111	pcg	1.12	int ret = 0;
112	pcg	1.1
113	root	1.31	if (!scrollBar.state)
114	pcg	1.12	return 0;
115	pcg	1.1
116	ayin	1.58	if (refresh)
117	pcg	1.12	{
118	ayin	1.58	int sb_top = view_start - top_row;
119			int sb_bot = sb_top + (nrow - 1);
120			int sb_len = max (nrow - 1 - top_row, 1);
121			int sb_size = (sb_bot - sb_top) * scrollBar.size ();
122	pcg	1.1
123	ayin	1.58	scrollBar.top = (scrollBar.beg + (sb_top * scrollBar.size ()) / sb_len);
124			scrollBar.len = sb_size / sb_len + scrollBar.min_height () + (sb_size % sb_len > 0);
125	ayin	1.46	scrollBar.bot = (scrollBar.top + scrollBar.len);
126	pcg	1.12	/* no change */
127	ayin	1.44	if (scrollBar.top == scrollBar.last_top
128			&& scrollBar.bot == scrollBar.last_bot
129	ayin	1.49	&& (scrollBar.state == scrollBar.last_state
130			\|\| !(scrollBar.state == STATE_UP \|\| scrollBar.state == STATE_DOWN)))
131	pcg	1.12	return 0;
132	pcg	1.1	}
133
134	ayin	1.58	ret = (this->*scrollBar.update) (refresh, scrollBar.last_top, scrollBar.last_bot, scrollBar.len);
135	pcg	1.1
136	ayin	1.44	scrollBar.last_top = scrollBar.top;
137			scrollBar.last_bot = scrollBar.bot;
138			scrollBar.last_state = scrollBar.state;
139	pcg	1.1
140	pcg	1.12	return ret;
141	pcg	1.1	}
142
143			void
144	ayin	1.50	scrollBar_t::setup (rxvt_term *term)
145	pcg	1.1	{
146	pcg	1.12	int i;
147			short style, width;
148	ayin	1.50	const char scrollalign, scrollstyle, *thickness;
149
150			this->term = term;
151			scrollalign = term->rs[Rs_scrollBar_align];
152			scrollstyle = term->rs[Rs_scrollstyle];
153			thickness = term->rs[Rs_scrollBar_thickness];
154	pcg	1.1
155	pcg	1.10	# if defined(RXVT_SCROLLBAR)
156	pcg	1.12	style = R_SB_RXVT;
157	pcg	1.10	# elif defined(XTERM_SCROLLBAR)
158	pcg	1.12	style = R_SB_XTERM;
159	pcg	1.10	# elif defined(NEXT_SCROLLBAR)
160	pcg	1.12	style = R_SB_NEXT;
161	pcg	1.10	# elif defined(PLAIN_SCROLLBAR)
162	pcg	1.12	style = R_SB_PLAIN;
163	pcg	1.10	#else
164	pcg	1.12	style = R_SB_RXVT;
165	pcg	1.1	# endif
166
167	pcg	1.10	# if (defined(NEXT_SCROLLBAR) \|\| defined(XTERM_SCROLLBAR) \|\| defined(PLAIN_SCROLLBAR))
168	pcg	1.12	if (scrollstyle)
169			{
170	pcg	1.1	# ifdef NEXT_SCROLLBAR
171	root	1.19	if (strncasecmp (scrollstyle, "next", 4) == 0)
172	pcg	1.12	style = R_SB_NEXT;
173	pcg	1.1	# endif
174			# ifdef XTERM_SCROLLBAR
175	root	1.19	if (strncasecmp (scrollstyle, "xterm", 5) == 0)
176	pcg	1.12	style = R_SB_XTERM;
177	pcg	1.1	# endif
178	pcg	1.10	# ifdef PLAIN_SCROLLBAR
179	root	1.19	if (strncasecmp (scrollstyle, "plain", 5) == 0)
180	pcg	1.12	style = R_SB_PLAIN;
181	pcg	1.10	# endif
182	pcg	1.12
183	pcg	1.1	}
184			# endif
185	pcg	1.12	if (style == R_SB_NEXT)
186			width = SB_WIDTH_NEXT;
187			else if (style == R_SB_XTERM)
188			width = SB_WIDTH_XTERM;
189			else if (style == R_SB_PLAIN)
190			width = SB_WIDTH_PLAIN;
191			else /* if (style == R_SB_RXVT) */
192			width = SB_WIDTH_RXVT;
193	pcg	1.1
194	pcg	1.12	if (style != R_SB_NEXT) /* dishonour request - for now */
195	pcg	1.14	if (thickness && (i = atoi (thickness)) >= SB_WIDTH_MINIMUM)
196			width = min (i, SB_WIDTH_MAXIMUM);
197	pcg	1.1
198	root	1.32	# ifdef RXVT_SCROLLBAR
199	ayin	1.50	if (! term->option (Opt_scrollBar_floating) && style == R_SB_RXVT)
200	ayin	1.51	shadow = SHADOW_WIDTH;
201	pcg	1.1	# endif
202
203	ayin	1.50	this->style = style;
204			this->width = width;
205	pcg	1.1
206	ayin	1.51	/* align = R_SB_ALIGN_CENTRE; */
207	pcg	1.12	if (scrollalign)
208			{
209	root	1.19	if (strncasecmp (scrollalign, "top", 3) == 0)
210	ayin	1.50	align = R_SB_ALIGN_TOP;
211	root	1.19	else if (strncasecmp (scrollalign, "bottom", 6) == 0)
212	ayin	1.50	align = R_SB_ALIGN_BOTTOM;
213	pcg	1.1	}
214	ayin	1.50	last_bot = last_state = -1;
215	ayin	1.47	/* cursor scrollBar: Black-on-White */
216	ayin	1.50	leftptr_cursor = XCreateFontCursor (term->dpy, XC_left_ptr);
217	pcg	1.1	}
218
219	ayin	1.57	void
220			scrollBar_t::update_data ()
221			{
222			#if defined(PLAIN_SCROLLBAR)
223			if (style == R_SB_PLAIN)
224			{
225			beg = 0;
226			end = term->szHint.height;
227			update = &rxvt_term::scrollbar_show_plain;
228			}
229			#endif
230			#if defined(XTERM_SCROLLBAR)
231			if (style == R_SB_XTERM)
232			{
233			beg = 0;
234			end = term->szHint.height;
235			update = &rxvt_term::scrollbar_show_xterm;
236			}
237			#endif
238			#if defined(NEXT_SCROLLBAR)
239			if (style == R_SB_NEXT)
240			{
241			beg = 0;
242			end = term->szHint.height - (SB_BUTTON_TOTAL_HEIGHT + SB_PADDING);
243			update = &rxvt_term::scrollbar_show_next;
244			}
245			#endif
246			#if defined(RXVT_SCROLLBAR)
247			if (style == R_SB_RXVT)
248			{
249			beg = (width + 1) + shadow;
250			end = term->szHint.height - beg - (2 * shadow);
251			update = &rxvt_term::scrollbar_show_rxvt;
252			}
253			#endif
254			}
255
256	pcg	1.1	/----------------------- end-of-file (C source) -----------------------/
257	pcg	1.10