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 <schmorp@schmorp.de>
 *
 * 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
 */
void
scrollBar_t::map (int map)
{
  if (map)
    {
      state = STATE_IDLE;

      if (!win)
        resize ();

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

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,
                                 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);

      top = beg + (sb_top * size ()) / sb_len;
      bot = top + ecb_div_ru ((sb_bot - sb_top) * size (), sb_len) + min_height ();
      /* no change */
      if (top == last_top
          && bot == last_bot
          && (state == last_state
              || !(state == STATE_UP || state == STATE_DOWN)))
        return 0;
    }

  ret = (this->*update) (refresh);

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

  return ret;
}

void
scrollBar_t::setup (rxvt_term *term)
{
  int             i;
  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

  /* 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_state = STATE_OFF;
  /* cursor scrollBar: Black-on-White */
  leftptr_cursor = XCreateFontCursor (term->dpy, XC_left_ptr);
}

void
scrollBar_t::destroy ()
{
#ifdef XTERM_SCROLLBAR
  if (xscrollbarGC) XFreeGC (term->dpy, xscrollbarGC);
  if (ShadowGC)     XFreeGC (term->dpy, ShadowGC);
#endif
#ifdef PLAIN_SCROLLBAR
  if (pscrollbarGC) XFreeGC (term->dpy, pscrollbarGC);
#endif
#ifdef NEXT_SCROLLBAR
  if (blackGC)      XFreeGC (term->dpy, blackGC);
  if (whiteGC)      XFreeGC (term->dpy, whiteGC);
  if (grayGC)       XFreeGC (term->dpy, grayGC);
  if (darkGC)       XFreeGC (term->dpy, darkGC);
  if (stippleGC)    XFreeGC (term->dpy, stippleGC);
  if (dimple)       XFreePixmap (term->dpy, dimple);
  if (upArrow)      XFreePixmap (term->dpy, upArrow);
  if (downArrow)    XFreePixmap (term->dpy, downArrow);
  if (upArrowHi)    XFreePixmap (term->dpy, upArrowHi);
  if (downArrowHi)  XFreePixmap (term->dpy, downArrowHi);
#endif
#ifdef RXVT_SCROLLBAR
  if (topShadowGC)  XFreeGC (term->dpy, topShadowGC);
  if (botShadowGC)  XFreeGC (term->dpy, botShadowGC);
  if (scrollbarGC)  XFreeGC (term->dpy, scrollbarGC);
#endif
}

void
scrollBar_t::update_data ()
{
#if defined(PLAIN_SCROLLBAR)
  if (style == R_SB_PLAIN)
    {
      beg = 0;
      end = term->szHint.height;
      update = &scrollBar_t::show_plain;
    }
#endif
#if defined(XTERM_SCROLLBAR)
  if (style == R_SB_XTERM)
    {
      beg = 0;
      end = term->szHint.height;
      update = &scrollBar_t::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 = &scrollBar_t::show_next;
    }
#endif
#if defined(RXVT_SCROLLBAR)
  if (style == R_SB_RXVT)
    {
      beg = (width + 1) + shadow;
      end = term->szHint.height - beg - (2 * shadow);
      update = &scrollBar_t::show_rxvt;
    }
#endif
}

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

Revision:	1.71
Committed:	Sun Aug 28 18:48:41 2011 UTC (12 years, 8 months ago) by sf-exg
Content type:	text/plain
Branch:	MAIN
Changes since 1.70:	+1 -7 lines
Log Message:	Remove failed attempt at avoiding unneeded resize and refresh of the window when the scrollbar is turned on/off with the corresponding DEC sequence.
#	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	1.64	* Copyright (c) 2004-2006 Marc Lehmann <schmorp@schmorp.de>
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	sf-exg	1.71	void
35	ayin	1.60	scrollBar_t::map (int map)
36	pcg	1.1	{
37	root	1.24	if (map)
38	pcg	1.12	{
39	ayin	1.60	state = STATE_IDLE;
40	root	1.24
41	ayin	1.60	if (!win)
42			resize ();
43	root	1.24
44	ayin	1.60	if (win)
45	pcg	1.12	{
46	ayin	1.60	XMapWindow (term->dpy, win);
47	pcg	1.12	}
48			}
49	root	1.24	else
50	pcg	1.12	{
51	sf-exg	1.68	state = STATE_OFF;
52	ayin	1.60	XUnmapWindow (term->dpy, win);
53	pcg	1.1	}
54			}
55
56			void
57	ayin	1.60	scrollBar_t::resize ()
58	pcg	1.1	{
59	pcg	1.12	int delayed_init = 0;
60	ayin	1.55	int window_sb_x = 0;
61
62	ayin	1.60	if (term->option (Opt_scrollBar_right))
63			window_sb_x = term->szHint.width - total_width ();
64	pcg	1.1
65	ayin	1.60	update_data ();
66	pcg	1.1
67	ayin	1.60	if (!win)
68	pcg	1.12	{
69			/* create the scrollbar window */
70	ayin	1.60	win = XCreateSimpleWindow (term->dpy,
71	sf-exg	1.66	term->parent,
72	ayin	1.60	window_sb_x, 0,
73			total_width (),
74			term->szHint.height,
75			0,
76			term->pix_colors[Color_fg],
77			term->pix_colors[Color_border]);
78			XDefineCursor (term->dpy, win, leftptr_cursor);
79	pcg	1.13
80	ayin	1.60	XSelectInput (term->dpy, win,
81	pcg	1.13	ExposureMask \| ButtonPressMask \| ButtonReleaseMask
82			\| Button1MotionMask \| Button2MotionMask
83			\| Button3MotionMask);
84	ayin	1.60	term->scrollbar_ev.start (term->display, win);
85	pcg	1.13
86	pcg	1.12	delayed_init = 1;
87			}
88	ayin	1.55	else
89	ayin	1.60	XMoveResizeWindow (term->dpy, win,
90	ayin	1.55	window_sb_x, 0,
91	ayin	1.60	total_width (), term->szHint.height);
92	pcg	1.13
93	ayin	1.60	show (1);
94	pcg	1.13
95	pcg	1.12	if (delayed_init)
96	ayin	1.60	XMapWindow (term->dpy, win);
97	pcg	1.1	}
98
99			/*
100			* Update current scrollbar view w.r.t. slider heights, etc.
101			*/
102			int
103	ayin	1.60	scrollBar_t::show (int refresh)
104	pcg	1.1	{
105	ayin	1.59	int ret;
106	pcg	1.1
107	ayin	1.60	if (!state)
108	pcg	1.12	return 0;
109	pcg	1.1
110	ayin	1.58	if (refresh)
111	pcg	1.12	{
112	ayin	1.60	int sb_top = term->view_start - term->top_row;
113			int sb_bot = sb_top + (term->nrow - 1);
114			int sb_len = max (term->nrow - 1 - term->top_row, 1);
115
116			top = beg + (sb_top * size ()) / sb_len;
117	sf-exg	1.69	bot = top + ecb_div_ru ((sb_bot - sb_top) * size (), sb_len) + min_height ();
118	pcg	1.12	/* no change */
119	ayin	1.60	if (top == last_top
120			&& bot == last_bot
121			&& (state == last_state
122			\|\| !(state == STATE_UP \|\| state == STATE_DOWN)))
123	pcg	1.12	return 0;
124	pcg	1.1	}
125
126	ayin	1.61	ret = (this->*update) (refresh);
127	pcg	1.1
128	ayin	1.60	last_top = top;
129			last_bot = bot;
130			last_state = state;
131	pcg	1.1
132	pcg	1.12	return ret;
133	pcg	1.1	}
134
135			void
136	ayin	1.50	scrollBar_t::setup (rxvt_term *term)
137	pcg	1.1	{
138	pcg	1.12	int i;
139	ayin	1.50	const char scrollalign, scrollstyle, *thickness;
140
141			this->term = term;
142			scrollalign = term->rs[Rs_scrollBar_align];
143			scrollstyle = term->rs[Rs_scrollstyle];
144			thickness = term->rs[Rs_scrollBar_thickness];
145	pcg	1.1
146	pcg	1.10	# if defined(RXVT_SCROLLBAR)
147	pcg	1.12	style = R_SB_RXVT;
148	pcg	1.10	# elif defined(XTERM_SCROLLBAR)
149	pcg	1.12	style = R_SB_XTERM;
150	pcg	1.10	# elif defined(NEXT_SCROLLBAR)
151	pcg	1.12	style = R_SB_NEXT;
152	pcg	1.10	# elif defined(PLAIN_SCROLLBAR)
153	pcg	1.12	style = R_SB_PLAIN;
154	pcg	1.10	#else
155	pcg	1.12	style = R_SB_RXVT;
156	pcg	1.1	# endif
157
158	pcg	1.10	# if (defined(NEXT_SCROLLBAR) \|\| defined(XTERM_SCROLLBAR) \|\| defined(PLAIN_SCROLLBAR))
159	pcg	1.12	if (scrollstyle)
160			{
161	pcg	1.1	# ifdef NEXT_SCROLLBAR
162	root	1.19	if (strncasecmp (scrollstyle, "next", 4) == 0)
163	pcg	1.12	style = R_SB_NEXT;
164	pcg	1.1	# endif
165			# ifdef XTERM_SCROLLBAR
166	root	1.19	if (strncasecmp (scrollstyle, "xterm", 5) == 0)
167	pcg	1.12	style = R_SB_XTERM;
168	pcg	1.1	# endif
169	pcg	1.10	# ifdef PLAIN_SCROLLBAR
170	root	1.19	if (strncasecmp (scrollstyle, "plain", 5) == 0)
171	pcg	1.12	style = R_SB_PLAIN;
172	pcg	1.10	# endif
173	pcg	1.12
174	pcg	1.1	}
175			# endif
176	pcg	1.12	if (style == R_SB_NEXT)
177			width = SB_WIDTH_NEXT;
178			else if (style == R_SB_XTERM)
179			width = SB_WIDTH_XTERM;
180			else if (style == R_SB_PLAIN)
181			width = SB_WIDTH_PLAIN;
182			else /* if (style == R_SB_RXVT) */
183			width = SB_WIDTH_RXVT;
184	pcg	1.1
185	pcg	1.12	if (style != R_SB_NEXT) /* dishonour request - for now */
186	pcg	1.14	if (thickness && (i = atoi (thickness)) >= SB_WIDTH_MINIMUM)
187			width = min (i, SB_WIDTH_MAXIMUM);
188	pcg	1.1
189	sf-exg	1.65	# ifdef RXVT_SCROLLBAR
190			if (! term->option (Opt_scrollBar_floating) && style == R_SB_RXVT)
191			shadow = SHADOW_WIDTH;
192			# endif
193
194	ayin	1.51	/* align = R_SB_ALIGN_CENTRE; */
195	pcg	1.12	if (scrollalign)
196			{
197	root	1.19	if (strncasecmp (scrollalign, "top", 3) == 0)
198	ayin	1.50	align = R_SB_ALIGN_TOP;
199	root	1.19	else if (strncasecmp (scrollalign, "bottom", 6) == 0)
200	ayin	1.50	align = R_SB_ALIGN_BOTTOM;
201	pcg	1.1	}
202	sf-exg	1.68	last_state = STATE_OFF;
203	ayin	1.47	/* cursor scrollBar: Black-on-White */
204	ayin	1.50	leftptr_cursor = XCreateFontCursor (term->dpy, XC_left_ptr);
205	pcg	1.1	}
206
207	ayin	1.57	void
208	ayin	1.61	scrollBar_t::destroy ()
209			{
210			#ifdef XTERM_SCROLLBAR
211			if (xscrollbarGC) XFreeGC (term->dpy, xscrollbarGC);
212			if (ShadowGC) XFreeGC (term->dpy, ShadowGC);
213			#endif
214			#ifdef PLAIN_SCROLLBAR
215			if (pscrollbarGC) XFreeGC (term->dpy, pscrollbarGC);
216			#endif
217			#ifdef NEXT_SCROLLBAR
218			if (blackGC) XFreeGC (term->dpy, blackGC);
219			if (whiteGC) XFreeGC (term->dpy, whiteGC);
220			if (grayGC) XFreeGC (term->dpy, grayGC);
221			if (darkGC) XFreeGC (term->dpy, darkGC);
222			if (stippleGC) XFreeGC (term->dpy, stippleGC);
223			if (dimple) XFreePixmap (term->dpy, dimple);
224			if (upArrow) XFreePixmap (term->dpy, upArrow);
225			if (downArrow) XFreePixmap (term->dpy, downArrow);
226			if (upArrowHi) XFreePixmap (term->dpy, upArrowHi);
227			if (downArrowHi) XFreePixmap (term->dpy, downArrowHi);
228			#endif
229			#ifdef RXVT_SCROLLBAR
230			if (topShadowGC) XFreeGC (term->dpy, topShadowGC);
231			if (botShadowGC) XFreeGC (term->dpy, botShadowGC);
232			if (scrollbarGC) XFreeGC (term->dpy, scrollbarGC);
233			#endif
234			}
235
236			void
237	ayin	1.57	scrollBar_t::update_data ()
238			{
239			#if defined(PLAIN_SCROLLBAR)
240			if (style == R_SB_PLAIN)
241			{
242			beg = 0;
243			end = term->szHint.height;
244	ayin	1.61	update = &scrollBar_t::show_plain;
245	ayin	1.57	}
246			#endif
247			#if defined(XTERM_SCROLLBAR)
248			if (style == R_SB_XTERM)
249			{
250			beg = 0;
251			end = term->szHint.height;
252	ayin	1.61	update = &scrollBar_t::show_xterm;
253	ayin	1.57	}
254			#endif
255			#if defined(NEXT_SCROLLBAR)
256			if (style == R_SB_NEXT)
257			{
258			beg = 0;
259			end = term->szHint.height - (SB_BUTTON_TOTAL_HEIGHT + SB_PADDING);
260	ayin	1.61	update = &scrollBar_t::show_next;
261	ayin	1.57	}
262			#endif
263			#if defined(RXVT_SCROLLBAR)
264			if (style == R_SB_RXVT)
265			{
266			beg = (width + 1) + shadow;
267			end = term->szHint.height - beg - (2 * shadow);
268	ayin	1.61	update = &scrollBar_t::show_rxvt;
269	ayin	1.57	}
270			#endif
271			}
272
273	pcg	1.1	/----------------------- end-of-file (C source) -----------------------/
274	pcg	1.10