1 /*----------------------------------------------------------------------*
2 * File: scrollbar.C
3 *----------------------------------------------------------------------*
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 * Copyright (c) 2004-2006 Marc Lehmann <schmorp@schmorp.de>
10 *
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 3 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 void
map(int map)35 scrollBar_t::map (int map)
36 {
37 if (map)
38 {
39 state = SB_STATE_IDLE;
40
41 if (!win)
42 resize ();
43 else
44 XMapWindow (term->dpy, win);
45 }
46 else
47 {
48 state = SB_STATE_OFF;
49
50 if (win)
51 XUnmapWindow (term->dpy, win);
52 }
53 }
54
55 void
resize()56 scrollBar_t::resize ()
57 {
58 int delayed_init = 0;
59 int window_sb_x = 0;
60
61 if (term->option (Opt_scrollBar_right))
62 window_sb_x = term->szHint.width - total_width ();
63
64 update_data ();
65
66 if (!win)
67 {
68 /* create the scrollbar window */
69 win = XCreateSimpleWindow (term->dpy,
70 term->parent,
71 window_sb_x, 0,
72 total_width (),
73 term->szHint.height,
74 0,
75 term->pix_colors[Color_fg],
76 term->pix_colors[color ()]);
77 XDefineCursor (term->dpy, win, leftptr_cursor);
78
79 XSelectInput (term->dpy, win,
80 ExposureMask | ButtonPressMask | ButtonReleaseMask
81 | Button1MotionMask | Button2MotionMask
82 | Button3MotionMask);
83 term->scrollbar_ev.start (term->display, win);
84
85 delayed_init = 1;
86 }
87 else
88 XMoveResizeWindow (term->dpy, win,
89 window_sb_x, 0,
90 total_width (), term->szHint.height);
91
92 show (1);
93
94 if (delayed_init)
95 XMapWindow (term->dpy, win);
96 }
97
98 /*
99 * Update current scrollbar view w.r.t. slider heights, etc.
100 */
101 int
show(int refresh)102 scrollBar_t::show (int refresh)
103 {
104 int ret;
105
106 if (!state)
107 return 0;
108
109 if (refresh)
110 {
111 int sb_top = term->view_start - term->top_row;
112 int sb_bot = sb_top + (term->nrow - 1);
113 int sb_len = max (term->nrow - 1 - term->top_row, 1);
114 int n = min (min_height (), size ());
115
116 top = beg + (sb_top * (size () - n)) / sb_len;
117 bot = top + ecb_div_ru ((sb_bot - sb_top) * (size () - n), sb_len) + n;
118 /* no change */
119 if (top == last_top
120 && bot == last_bot
121 && (state == last_state
122 || !(state == SB_STATE_UP || state == SB_STATE_DOWN)))
123 return 0;
124 }
125
126 ret = (this->*update) (refresh);
127
128 last_top = top;
129 last_bot = bot;
130 last_state = state;
131
132 return ret;
133 }
134
135 void
setup(rxvt_term * term)136 scrollBar_t::setup (rxvt_term *term)
137 {
138 int i;
139 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
146 # if defined(RXVT_SCROLLBAR)
147 style = SB_STYLE_RXVT;
148 # elif defined(XTERM_SCROLLBAR)
149 style = SB_STYLE_XTERM;
150 # elif defined(NEXT_SCROLLBAR)
151 style = SB_STYLE_NEXT;
152 # elif defined(PLAIN_SCROLLBAR)
153 style = SB_STYLE_PLAIN;
154 #else
155 style = SB_STYLE_RXVT;
156 # endif
157
158 # if (defined(NEXT_SCROLLBAR) || defined(XTERM_SCROLLBAR) || defined(PLAIN_SCROLLBAR))
159 if (scrollstyle)
160 {
161 # ifdef NEXT_SCROLLBAR
162 if (strncasecmp (scrollstyle, "next", 4) == 0)
163 style = SB_STYLE_NEXT;
164 # endif
165 # ifdef XTERM_SCROLLBAR
166 if (strncasecmp (scrollstyle, "xterm", 5) == 0)
167 style = SB_STYLE_XTERM;
168 # endif
169 # ifdef PLAIN_SCROLLBAR
170 if (strncasecmp (scrollstyle, "plain", 5) == 0)
171 style = SB_STYLE_PLAIN;
172 # endif
173
174 }
175 # endif
176 if (style == SB_STYLE_NEXT)
177 width = SB_WIDTH_NEXT;
178 else if (style == SB_STYLE_XTERM)
179 width = SB_WIDTH_XTERM;
180 else if (style == SB_STYLE_PLAIN)
181 width = SB_WIDTH_PLAIN;
182 else /* if (style == SB_STYLE_RXVT) */
183 width = SB_WIDTH_RXVT;
184
185 if (style != SB_STYLE_NEXT) /* dishonour request - for now */
186 if (thickness && (i = atoi (thickness)) >= SB_WIDTH_MINIMUM)
187 width = min (i, SB_WIDTH_MAXIMUM);
188
189 # ifdef RXVT_SCROLLBAR
190 if (! term->option (Opt_scrollBar_floating) && style == SB_STYLE_RXVT)
191 shadow = SHADOW_WIDTH;
192 # endif
193
194 /* align = SB_ALIGN_CENTRE; */
195 if (scrollalign)
196 {
197 if (strncasecmp (scrollalign, "top", 3) == 0)
198 align = SB_ALIGN_TOP;
199 else if (strncasecmp (scrollalign, "bottom", 6) == 0)
200 align = SB_ALIGN_BOTTOM;
201 }
202 last_state = SB_STATE_OFF;
203 /* cursor scrollBar: Black-on-White */
204 leftptr_cursor = XCreateFontCursor (term->dpy, XC_left_ptr);
205 }
206
207 void
destroy()208 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 int
color()237 scrollBar_t::color ()
238 {
239 #ifdef RXVT_SCROLLBAR
240 if (style == SB_STYLE_RXVT && shadow)
241 return Color_trough;
242 else
243 #endif
244 return Color_border;
245 }
246
247 void
update_data()248 scrollBar_t::update_data ()
249 {
250 #if defined(PLAIN_SCROLLBAR)
251 if (style == SB_STYLE_PLAIN)
252 {
253 beg = 0;
254 end = term->szHint.height;
255 update = &scrollBar_t::show_plain;
256 }
257 #endif
258 #if defined(XTERM_SCROLLBAR)
259 if (style == SB_STYLE_XTERM)
260 {
261 beg = 0;
262 end = term->szHint.height;
263 update = &scrollBar_t::show_xterm;
264 }
265 #endif
266 #if defined(NEXT_SCROLLBAR)
267 if (style == SB_STYLE_NEXT)
268 {
269 beg = 0;
270 end = term->szHint.height - (SB_BUTTON_TOTAL_HEIGHT + SB_PADDING);
271 update = &scrollBar_t::show_next;
272 }
273 #endif
274 #if defined(RXVT_SCROLLBAR)
275 if (style == SB_STYLE_RXVT)
276 {
277 beg = (width + 1) + shadow;
278 end = term->szHint.height - beg;
279 update = &scrollBar_t::show_rxvt;
280 }
281 #endif
282 }
283
284 /*----------------------- end-of-file (C source) -----------------------*/
285
286