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
scrollBar_t::map (int map)
{
  int change = 0;

  if (map)
    {
      state = STATE_IDLE;

      if (!win)
        resize ();

      if (win)
        {
          XMapWindow (term->dpy, win);
          change = 1;
        }
    }
  else
    {
      state = 0;
      XUnmapWindow (term->dpy, win);
      change = 1;
    }

  return change;
}

void
scrollBar_t::resize ()
{
  int delayed_init = 0;
  int window_sb_x = 0;

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

  update_data ();

  if (!win)
    {
      /* create the scrollbar window */
      win = XCreateSimpleWindow (term->dpy,
                                 term->parent[0],
                                 window_sb_x, 0,
                                 total_width (),
                                 term->szHint.height,
                                 0,
                                 term->pix_colors[Color_fg],
                                 term->pix_colors[Color_border]);
      XDefineCursor (term->dpy, win, leftptr_cursor);

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

      delayed_init = 1;
    }
  else
    XMoveResizeWindow (term->dpy, win,
                       window_sb_x, 0,
                       total_width (), term->szHint.height);

  show (1);

  if (delayed_init)
    XMapWindow (term->dpy, win);
}

/*
 * Update current scrollbar view w.r.t. slider heights, etc.
 */
int
scrollBar_t::show (int refresh)
{
  int ret;

  if (!state)
    return 0;

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

      top = beg + (sb_top * size ()) / sb_len;
      len = sb_size / sb_len + min_height () + (sb_size % sb_len > 0);
      bot = top + len;
      /* no change */
      if (top == last_top
          && bot == last_bot
          && (state == last_state
              || !(state == STATE_UP || state == STATE_DOWN)))
        return 0;
    }

  ret = (term->*update) (refresh, last_top, last_bot, len);

  last_top = top;
  last_bot = bot;
  last_state = 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:	1.60
Committed:	Tue Feb 19 10:47:03 2008 UTC (16 years, 3 months ago) by ayin
Content type:	text/plain
Branch:	MAIN
Changes since 1.59:	+46 -46 lines
Log Message:	Make scrollbar_{resize,mapping,show} methods of scrollBar_t.
#	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	ayin	1.60	scrollBar_t::map (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	1.60	state = STATE_IDLE;
42	root	1.24
43	ayin	1.60	if (!win)
44			resize ();
45	root	1.24
46	ayin	1.60	if (win)
47	pcg	1.12	{
48	ayin	1.60	XMapWindow (term->dpy, win);
49	pcg	1.12	change = 1;
50			}
51			}
52	root	1.24	else
53	pcg	1.12	{
54	ayin	1.60	state = 0;
55			XUnmapWindow (term->dpy, 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	ayin	1.60	scrollBar_t::resize ()
64	pcg	1.1	{
65	pcg	1.12	int delayed_init = 0;
66	ayin	1.55	int window_sb_x = 0;
67
68	ayin	1.60	if (term->option (Opt_scrollBar_right))
69			window_sb_x = term->szHint.width - total_width ();
70	pcg	1.1
71	ayin	1.60	update_data ();
72	pcg	1.1
73	ayin	1.60	if (!win)
74	pcg	1.12	{
75			/* create the scrollbar window */
76	ayin	1.60	win = XCreateSimpleWindow (term->dpy,
77			term->parent[0],
78			window_sb_x, 0,
79			total_width (),
80			term->szHint.height,
81			0,
82			term->pix_colors[Color_fg],
83			term->pix_colors[Color_border]);
84			XDefineCursor (term->dpy, win, leftptr_cursor);
85	pcg	1.13
86	ayin	1.60	XSelectInput (term->dpy, win,
87	pcg	1.13	ExposureMask \| ButtonPressMask \| ButtonReleaseMask
88			\| Button1MotionMask \| Button2MotionMask
89			\| Button3MotionMask);
90	ayin	1.60	term->scrollbar_ev.start (term->display, win);
91	pcg	1.13
92	pcg	1.12	delayed_init = 1;
93			}
94	ayin	1.55	else
95	ayin	1.60	XMoveResizeWindow (term->dpy, win,
96	ayin	1.55	window_sb_x, 0,
97	ayin	1.60	total_width (), term->szHint.height);
98	pcg	1.13
99	ayin	1.60	show (1);
100	pcg	1.13
101	pcg	1.12	if (delayed_init)
102	ayin	1.60	XMapWindow (term->dpy, win);
103	pcg	1.1	}
104
105			/*
106			* Update current scrollbar view w.r.t. slider heights, etc.
107			*/
108			int
109	ayin	1.60	scrollBar_t::show (int refresh)
110	pcg	1.1	{
111	ayin	1.59	int ret;
112	pcg	1.1
113	ayin	1.60	if (!state)
114	pcg	1.12	return 0;
115	pcg	1.1
116	ayin	1.58	if (refresh)
117	pcg	1.12	{
118	ayin	1.60	int sb_top = term->view_start - term->top_row;
119			int sb_bot = sb_top + (term->nrow - 1);
120			int sb_len = max (term->nrow - 1 - term->top_row, 1);
121			int sb_size = (sb_bot - sb_top) * size ();
122
123			top = beg + (sb_top * size ()) / sb_len;
124			len = sb_size / sb_len + min_height () + (sb_size % sb_len > 0);
125			bot = top + len;
126	pcg	1.12	/* no change */
127	ayin	1.60	if (top == last_top
128			&& bot == last_bot
129			&& (state == last_state
130			\|\| !(state == STATE_UP \|\| state == STATE_DOWN)))
131	pcg	1.12	return 0;
132	pcg	1.1	}
133
134	ayin	1.60	ret = (term->*update) (refresh, last_top, last_bot, len);
135	pcg	1.1
136	ayin	1.60	last_top = top;
137			last_bot = bot;
138			last_state = 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