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 <pcg@goof.com> |
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 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 |
rxvt_term::scrollbar_mapping (int map) |
36 |
{ |
37 |
int change = 0; |
38 |
|
39 |
if (map) |
40 |
{ |
41 |
scrollBar.state = STATE_IDLE; |
42 |
|
43 |
if (!scrollBar.win) |
44 |
resize_scrollbar (); |
45 |
|
46 |
if (scrollBar.win) |
47 |
{ |
48 |
XMapWindow (dpy, scrollBar.win); |
49 |
change = 1; |
50 |
} |
51 |
} |
52 |
else |
53 |
{ |
54 |
scrollBar.state = 0; |
55 |
XUnmapWindow (dpy, scrollBar.win); |
56 |
change = 1; |
57 |
} |
58 |
|
59 |
return change; |
60 |
} |
61 |
|
62 |
void |
63 |
rxvt_term::resize_scrollbar () |
64 |
{ |
65 |
int delayed_init = 0; |
66 |
int window_sb_x = 0; |
67 |
|
68 |
if (option (Opt_scrollBar_right)) |
69 |
window_sb_x = szHint.width - scrollBar.total_width (); |
70 |
|
71 |
#define R_SCROLLBEG_XTERM 0 |
72 |
#define R_SCROLLEND_XTERM szHint.height |
73 |
#define R_SCROLLBEG_NEXT 0 |
74 |
#define R_SCROLLEND_NEXT szHint.height - (SB_BUTTON_TOTAL_HEIGHT + \ |
75 |
SB_PADDING) |
76 |
#define R_SCROLLBEG_RXVT (scrollBar.width + 1) + scrollBar.shadow |
77 |
#define R_SCROLLEND_RXVT szHint.height - R_SCROLLBEG_RXVT - \ |
78 |
(2 * scrollBar.shadow) |
79 |
|
80 |
#if defined(PLAIN_SCROLLBAR) |
81 |
if (scrollBar.style == R_SB_PLAIN) |
82 |
{ |
83 |
scrollBar.beg = R_SCROLLBEG_XTERM; |
84 |
scrollBar.end = R_SCROLLEND_XTERM; |
85 |
scrollBar.update = &rxvt_term::scrollbar_show_plain; |
86 |
} |
87 |
#endif |
88 |
#if defined(XTERM_SCROLLBAR) |
89 |
if (scrollBar.style == R_SB_XTERM) |
90 |
{ |
91 |
scrollBar.beg = R_SCROLLBEG_XTERM; |
92 |
scrollBar.end = R_SCROLLEND_XTERM; |
93 |
scrollBar.update = &rxvt_term::scrollbar_show_xterm; |
94 |
} |
95 |
#endif |
96 |
#if defined(NEXT_SCROLLBAR) |
97 |
if (scrollBar.style == R_SB_NEXT) |
98 |
{ |
99 |
scrollBar.beg = R_SCROLLBEG_NEXT; |
100 |
scrollBar.end = R_SCROLLEND_NEXT; |
101 |
scrollBar.update = &rxvt_term::scrollbar_show_next; |
102 |
} |
103 |
#endif |
104 |
#if defined(RXVT_SCROLLBAR) |
105 |
if (scrollBar.style == R_SB_RXVT) |
106 |
{ |
107 |
scrollBar.beg = R_SCROLLBEG_RXVT; |
108 |
scrollBar.end = R_SCROLLEND_RXVT; |
109 |
scrollBar.update = &rxvt_term::scrollbar_show_rxvt; |
110 |
} |
111 |
#endif |
112 |
|
113 |
if (!scrollBar.win) |
114 |
{ |
115 |
/* create the scrollbar window */ |
116 |
scrollBar.win = XCreateSimpleWindow (dpy, |
117 |
parent[0], |
118 |
window_sb_x, 0, |
119 |
scrollBar.total_width (), |
120 |
szHint.height, |
121 |
0, |
122 |
pix_colors[Color_fg], |
123 |
pix_colors[Color_border]); |
124 |
XDefineCursor (dpy, scrollBar.win, scrollBar.leftptr_cursor); |
125 |
|
126 |
XSelectInput (dpy, scrollBar.win, |
127 |
ExposureMask | ButtonPressMask | ButtonReleaseMask |
128 |
| Button1MotionMask | Button2MotionMask |
129 |
| Button3MotionMask); |
130 |
scrollbar_ev.start (display, scrollBar.win); |
131 |
|
132 |
delayed_init = 1; |
133 |
} |
134 |
else |
135 |
XMoveResizeWindow (dpy, scrollBar.win, |
136 |
window_sb_x, 0, |
137 |
scrollBar.total_width (), szHint.height); |
138 |
|
139 |
scrollbar_show (1); |
140 |
|
141 |
if (delayed_init) |
142 |
XMapWindow (dpy, scrollBar.win); |
143 |
} |
144 |
|
145 |
/* |
146 |
* Update current scrollbar view w.r.t. slider heights, etc. |
147 |
*/ |
148 |
int |
149 |
rxvt_term::scrollbar_show (int update) |
150 |
{ |
151 |
int ret = 0; |
152 |
|
153 |
if (!scrollBar.state) |
154 |
return 0; |
155 |
|
156 |
if (update) |
157 |
{ |
158 |
int top = view_start - top_row; |
159 |
int bot = top + (nrow - 1); |
160 |
int len = max (nrow - 1 - top_row, 1); |
161 |
int size = (bot - top) * scrollBar.size (); |
162 |
|
163 |
scrollBar.top = (scrollBar.beg + (top * scrollBar.size ()) / len); |
164 |
scrollBar.len = size / len + scrollBar.min_height () + (size % len > 0); |
165 |
scrollBar.bot = (scrollBar.top + scrollBar.len); |
166 |
/* no change */ |
167 |
if (scrollBar.top == scrollBar.last_top |
168 |
&& scrollBar.bot == scrollBar.last_bot |
169 |
&& (scrollBar.state == scrollBar.last_state |
170 |
|| !(scrollBar.state == STATE_UP || scrollBar.state == STATE_DOWN))) |
171 |
return 0; |
172 |
} |
173 |
|
174 |
ret = (this->*scrollBar.update) (update, scrollBar.last_top, scrollBar.last_bot, scrollBar.len); |
175 |
|
176 |
scrollBar.last_top = scrollBar.top; |
177 |
scrollBar.last_bot = scrollBar.bot; |
178 |
scrollBar.last_state = scrollBar.state; |
179 |
|
180 |
return ret; |
181 |
} |
182 |
|
183 |
void |
184 |
scrollBar_t::setup (rxvt_term *term) |
185 |
{ |
186 |
int i; |
187 |
short style, width; |
188 |
const char *scrollalign, *scrollstyle, *thickness; |
189 |
|
190 |
this->term = term; |
191 |
scrollalign = term->rs[Rs_scrollBar_align]; |
192 |
scrollstyle = term->rs[Rs_scrollstyle]; |
193 |
thickness = term->rs[Rs_scrollBar_thickness]; |
194 |
|
195 |
# if defined(RXVT_SCROLLBAR) |
196 |
style = R_SB_RXVT; |
197 |
# elif defined(XTERM_SCROLLBAR) |
198 |
style = R_SB_XTERM; |
199 |
# elif defined(NEXT_SCROLLBAR) |
200 |
style = R_SB_NEXT; |
201 |
# elif defined(PLAIN_SCROLLBAR) |
202 |
style = R_SB_PLAIN; |
203 |
#else |
204 |
style = R_SB_RXVT; |
205 |
# endif |
206 |
|
207 |
# if (defined(NEXT_SCROLLBAR) || defined(XTERM_SCROLLBAR) || defined(PLAIN_SCROLLBAR)) |
208 |
if (scrollstyle) |
209 |
{ |
210 |
# ifdef NEXT_SCROLLBAR |
211 |
if (strncasecmp (scrollstyle, "next", 4) == 0) |
212 |
style = R_SB_NEXT; |
213 |
# endif |
214 |
# ifdef XTERM_SCROLLBAR |
215 |
if (strncasecmp (scrollstyle, "xterm", 5) == 0) |
216 |
style = R_SB_XTERM; |
217 |
# endif |
218 |
# ifdef PLAIN_SCROLLBAR |
219 |
if (strncasecmp (scrollstyle, "plain", 5) == 0) |
220 |
style = R_SB_PLAIN; |
221 |
# endif |
222 |
|
223 |
} |
224 |
# endif |
225 |
if (style == R_SB_NEXT) |
226 |
width = SB_WIDTH_NEXT; |
227 |
else if (style == R_SB_XTERM) |
228 |
width = SB_WIDTH_XTERM; |
229 |
else if (style == R_SB_PLAIN) |
230 |
width = SB_WIDTH_PLAIN; |
231 |
else /* if (style == R_SB_RXVT) */ |
232 |
width = SB_WIDTH_RXVT; |
233 |
|
234 |
if (style != R_SB_NEXT) /* dishonour request - for now */ |
235 |
if (thickness && (i = atoi (thickness)) >= SB_WIDTH_MINIMUM) |
236 |
width = min (i, SB_WIDTH_MAXIMUM); |
237 |
|
238 |
# ifdef RXVT_SCROLLBAR |
239 |
if (! term->option (Opt_scrollBar_floating) && style == R_SB_RXVT) |
240 |
shadow = SHADOW_WIDTH; |
241 |
# endif |
242 |
|
243 |
this->style = style; |
244 |
this->width = width; |
245 |
|
246 |
/* align = R_SB_ALIGN_CENTRE; */ |
247 |
if (scrollalign) |
248 |
{ |
249 |
if (strncasecmp (scrollalign, "top", 3) == 0) |
250 |
align = R_SB_ALIGN_TOP; |
251 |
else if (strncasecmp (scrollalign, "bottom", 6) == 0) |
252 |
align = R_SB_ALIGN_BOTTOM; |
253 |
} |
254 |
last_bot = last_state = -1; |
255 |
/* cursor scrollBar: Black-on-White */ |
256 |
leftptr_cursor = XCreateFontCursor (term->dpy, XC_left_ptr); |
257 |
} |
258 |
|
259 |
/*----------------------- end-of-file (C source) -----------------------*/ |
260 |
|