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/*----------------------------------------------------------------------* |
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* File: scrollbar.C |
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*----------------------------------------------------------------------* |
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* |
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* Copyright (c) 1997,1998 mj olesen <olesen@me.QueensU.CA> |
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* Copyright (c) 1998 Alfredo K. Kojima <kojima@windowmaker.org> |
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* - N*XTstep like scrollbars |
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* Copyright (c) 1999-2001 Geoff Wing <gcw@pobox.com> |
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* Copyright (c) 2004-2006 Marc Lehmann <pcg@goof.com> |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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*----------------------------------------------------------------------*/ |
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|
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#include "../config.h" /* NECESSARY */ |
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#include "rxvt.h" /* NECESSARY */ |
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|
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/*----------------------------------------------------------------------*/ |
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|
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/* |
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* Map or unmap a scrollbar. Returns non-zero upon change of state |
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*/ |
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int |
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rxvt_term::scrollbar_mapping (int map) |
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{ |
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int change = 0; |
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|
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#ifdef HAVE_SCROLLBARS |
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if (map) |
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{ |
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scrollBar.setIdle (); |
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|
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if (!scrollBar.win) |
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resize_scrollbar (); |
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|
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if (scrollBar.win) |
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{ |
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XMapWindow (dpy, scrollBar.win); |
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change = 1; |
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} |
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} |
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else |
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{ |
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scrollBar.state = 0; |
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XUnmapWindow (dpy, scrollBar.win); |
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change = 1; |
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} |
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#endif |
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|
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return change; |
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} |
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|
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void |
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rxvt_term::resize_scrollbar () |
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{ |
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#ifdef HAVE_SCROLLBARS |
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int delayed_init = 0; |
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|
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#define R_SCROLLBEG_XTERM 0 |
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#define R_SCROLLEND_XTERM szHint.height |
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#define R_SCROLLBEG_NEXT 0 |
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#define R_SCROLLEND_NEXT szHint.height - (SB_BUTTON_TOTAL_HEIGHT + \ |
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SB_PADDING) |
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#define R_SCROLLBEG_RXVT (scrollBar.width + 1) + scrollBar.shadow |
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#define R_SCROLLEND_RXVT szHint.height - R_SCROLLBEG_RXVT - \ |
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(2 * scrollBar.shadow) |
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|
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#if defined(PLAIN_SCROLLBAR) |
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if (scrollBar.style == R_SB_PLAIN) |
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{ |
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scrollBar.beg = R_SCROLLBEG_XTERM; |
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scrollBar.end = R_SCROLLEND_XTERM; |
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scrollBar.update = &rxvt_term::scrollbar_show_plain; |
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} |
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#endif |
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#if defined(XTERM_SCROLLBAR) |
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if (scrollBar.style == R_SB_XTERM) |
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{ |
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scrollBar.beg = R_SCROLLBEG_XTERM; |
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scrollBar.end = R_SCROLLEND_XTERM; |
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scrollBar.update = &rxvt_term::scrollbar_show_xterm; |
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} |
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#endif |
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#if defined(NEXT_SCROLLBAR) |
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if (scrollBar.style == R_SB_NEXT) |
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{ |
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scrollBar.beg = R_SCROLLBEG_NEXT; |
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scrollBar.end = R_SCROLLEND_NEXT; |
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scrollBar.update = &rxvt_term::scrollbar_show_next; |
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} |
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#endif |
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#if defined(RXVT_SCROLLBAR) |
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if (scrollBar.style == R_SB_RXVT) |
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{ |
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scrollBar.beg = R_SCROLLBEG_RXVT; |
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scrollBar.end = R_SCROLLEND_RXVT; |
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scrollBar.update = &rxvt_term::scrollbar_show_rxvt; |
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} |
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#endif |
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|
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if (!scrollBar.win) |
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{ |
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/* create the scrollbar window */ |
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scrollBar.win = XCreateSimpleWindow (dpy, |
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parent[0], |
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window_sb_x, 0, |
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scrollbar_TotalWidth (), |
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szHint.height, |
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0, |
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pix_colors[Color_fg], |
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pix_colors[Color_border]); |
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XDefineCursor (dpy, scrollBar.win, leftptr_cursor); |
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|
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XSelectInput (dpy, scrollBar.win, |
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ExposureMask | ButtonPressMask | ButtonReleaseMask |
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| Button1MotionMask | Button2MotionMask |
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| Button3MotionMask); |
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scrollbar_ev.start (display, scrollBar.win); |
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|
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delayed_init = 1; |
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} |
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|
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scrollbar_show (1); |
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|
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if (delayed_init) |
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XMapWindow (dpy, scrollBar.win); |
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#endif |
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} |
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|
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/* |
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* Update current scrollbar view w.r.t. slider heights, etc. |
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*/ |
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int |
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rxvt_term::scrollbar_show (int update) |
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{ |
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int ret = 0; |
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#ifdef HAVE_SCROLLBARS |
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int top, bot, len, adj; |
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int scrollbar_len = 0; |
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|
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if (!scrollBar.state) |
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return 0; |
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|
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if (update) |
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{ |
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top = view_start - top_row; |
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bot = top + (nrow - 1); |
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len = max (nrow - 1 - top_row, 1); |
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adj = (((bot - top) * scrollbar_size ()) % len) > 0 ? 1 : 0; |
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|
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scrollBar.top = (scrollBar.beg + (top * scrollbar_size ()) / len); |
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scrollbar_len = ((bot - top) * scrollbar_size ()) / len + |
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scrollbar_minheight () + adj; |
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scrollBar.bot = (scrollBar.top + scrollbar_len); |
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/* no change */ |
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if (scrollBar.top == last_top |
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&& scrollBar.bot == last_bot |
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&& (scrollBar.state == last_state || !scrollbar_isUpDn ())) |
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return 0; |
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} |
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|
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ret = (this->*scrollBar.update) (update, last_top, last_bot, scrollbar_len); |
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|
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last_top = scrollBar.top; |
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last_bot = scrollBar.bot; |
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last_state = scrollBar.state; |
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#endif |
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|
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return ret; |
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} |
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|
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void |
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rxvt_term::setup_scrollbar (const char *scrollalign, const char *scrollstyle, const char *thickness) |
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{ |
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#ifdef HAVE_SCROLLBARS |
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int i; |
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short style, width; |
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|
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# if defined(RXVT_SCROLLBAR) |
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style = R_SB_RXVT; |
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# elif defined(XTERM_SCROLLBAR) |
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style = R_SB_XTERM; |
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# elif defined(NEXT_SCROLLBAR) |
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style = R_SB_NEXT; |
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# elif defined(PLAIN_SCROLLBAR) |
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style = R_SB_PLAIN; |
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#else |
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style = R_SB_RXVT; |
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# endif |
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|
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# if (defined(NEXT_SCROLLBAR) || defined(XTERM_SCROLLBAR) || defined(PLAIN_SCROLLBAR)) |
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if (scrollstyle) |
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{ |
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# ifdef NEXT_SCROLLBAR |
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if (strncasecmp (scrollstyle, "next", 4) == 0) |
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style = R_SB_NEXT; |
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# endif |
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# ifdef XTERM_SCROLLBAR |
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if (strncasecmp (scrollstyle, "xterm", 5) == 0) |
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style = R_SB_XTERM; |
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# endif |
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# ifdef PLAIN_SCROLLBAR |
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if (strncasecmp (scrollstyle, "plain", 5) == 0) |
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style = R_SB_PLAIN; |
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# endif |
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|
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} |
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# endif |
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if (style == R_SB_NEXT) |
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width = SB_WIDTH_NEXT; |
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else if (style == R_SB_XTERM) |
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width = SB_WIDTH_XTERM; |
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else if (style == R_SB_PLAIN) |
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width = SB_WIDTH_PLAIN; |
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else /* if (style == R_SB_RXVT) */ |
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width = SB_WIDTH_RXVT; |
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|
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if (style != R_SB_NEXT) /* dishonour request - for now */ |
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if (thickness && (i = atoi (thickness)) >= SB_WIDTH_MINIMUM) |
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width = min (i, SB_WIDTH_MAXIMUM); |
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|
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# ifdef RXVT_SCROLLBAR |
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if (! option (Opt_scrollBar_floating) && style == R_SB_RXVT) |
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scrollBar.shadow = SHADOW_WIDTH; |
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# endif |
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|
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scrollBar.style = style; |
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scrollBar.width = width; |
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|
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/* scrollbar_align = R_SB_ALIGN_CENTRE; */ |
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if (scrollalign) |
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{ |
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if (strncasecmp (scrollalign, "top", 3) == 0) |
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scrollbar_align = R_SB_ALIGN_TOP; |
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else if (strncasecmp (scrollalign, "bottom", 6) == 0) |
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scrollbar_align = R_SB_ALIGN_BOTTOM; |
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} |
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#endif |
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} |
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|
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/*----------------------- end-of-file (C source) -----------------------*/ |
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|
