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/*----------------------------------------------------------------------*
* 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 3 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 = SB_STATE_IDLE;
if (!win)
resize ();
else
XMapWindow (term->dpy, win);
}
else
{
state = SB_STATE_OFF;
if (win)
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 ()]);
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 n = min (min_height (), size ());
top = beg + (sb_top * (size () - n)) / sb_len;
bot = top + ecb_div_ru ((sb_bot - sb_top) * (size () - n), sb_len) + n;
/* no change */
if (top == last_top
&& bot == last_bot
&& (state == last_state
|| !(state == SB_STATE_UP || state == SB_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 = SB_STYLE_RXVT;
# elif defined(XTERM_SCROLLBAR)
style = SB_STYLE_XTERM;
# elif defined(NEXT_SCROLLBAR)
style = SB_STYLE_NEXT;
# elif defined(PLAIN_SCROLLBAR)
style = SB_STYLE_PLAIN;
#else
style = SB_STYLE_RXVT;
# endif
# if (defined(NEXT_SCROLLBAR) || defined(XTERM_SCROLLBAR) || defined(PLAIN_SCROLLBAR))
if (scrollstyle)
{
# ifdef NEXT_SCROLLBAR
if (strncasecmp (scrollstyle, "next", 4) == 0)
style = SB_STYLE_NEXT;
# endif
# ifdef XTERM_SCROLLBAR
if (strncasecmp (scrollstyle, "xterm", 5) == 0)
style = SB_STYLE_XTERM;
# endif
# ifdef PLAIN_SCROLLBAR
if (strncasecmp (scrollstyle, "plain", 5) == 0)
style = SB_STYLE_PLAIN;
# endif
}
# endif
if (style == SB_STYLE_NEXT)
width = SB_WIDTH_NEXT;
else if (style == SB_STYLE_XTERM)
width = SB_WIDTH_XTERM;
else if (style == SB_STYLE_PLAIN)
width = SB_WIDTH_PLAIN;
else /* if (style == SB_STYLE_RXVT) */
width = SB_WIDTH_RXVT;
if (style != SB_STYLE_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 == SB_STYLE_RXVT)
shadow = SHADOW_WIDTH;
# endif
/* align = SB_ALIGN_CENTRE; */
if (scrollalign)
{
if (strncasecmp (scrollalign, "top", 3) == 0)
align = SB_ALIGN_TOP;
else if (strncasecmp (scrollalign, "bottom", 6) == 0)
align = SB_ALIGN_BOTTOM;
}
last_state = SB_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
}
int
scrollBar_t::color ()
{
#ifdef RXVT_SCROLLBAR
if (style == SB_STYLE_RXVT && shadow)
return Color_trough;
else
#endif
return Color_border;
}
void
scrollBar_t::update_data ()
{
#if defined(PLAIN_SCROLLBAR)
if (style == SB_STYLE_PLAIN)
{
beg = 0;
end = term->szHint.height;
update = &scrollBar_t::show_plain;
}
#endif
#if defined(XTERM_SCROLLBAR)
if (style == SB_STYLE_XTERM)
{
beg = 0;
end = term->szHint.height;
update = &scrollBar_t::show_xterm;
}
#endif
#if defined(NEXT_SCROLLBAR)
if (style == SB_STYLE_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 == SB_STYLE_RXVT)
{
beg = (width + 1) + shadow;
end = term->szHint.height - beg;
update = &scrollBar_t::show_rxvt;
}
#endif
}
/*----------------------- end-of-file (C source) -----------------------*/
|
