rxvt-unicode/src/scrollbar-rxvt.C

/*----------------------------------------------------------------------*
 * File:        scrollbar-rxvt.C
 *----------------------------------------------------------------------*
 *
 * Copyright (c) 1997,1998 mj olesen <olesen@me.QueensU.CA>
 * Copyright (c) 1999-2001 Geoff Wing <gcw@pobox.com>
 * Copyright (c) 2004-2006 Marc Lehmann <pcg@goof.com>
 *
 * 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 */

/*----------------------------------------------------------------------*/
#if defined(RXVT_SCROLLBAR)

static void
draw_shadow (rxvt_term *term, int x, int y, int w, int h)
{
  int shadow;

  shadow = (w == 0 || h == 0) ? 1 : SHADOW_WIDTH;
  w += x - 1;
  h += y - 1;

  for (; shadow-- > 0; x++, y++, w--, h--)
    {
      XDrawLine (term->dpy, term->scrollBar.win, term->topShadowGC, x, y, w    , y    );
      XDrawLine (term->dpy, term->scrollBar.win, term->topShadowGC, x, y, x    , h    );
      XDrawLine (term->dpy, term->scrollBar.win, term->botShadowGC, w, h, w    , y + 1);
      XDrawLine (term->dpy, term->scrollBar.win, term->botShadowGC, w, h, x + 1, h    );
    }
}

/* draw triangular button with a shadow of 2 pixels */
static void
draw_button (rxvt_term *term, int x, int y, int dirn)
{
  unsigned int sz, sz2;
  XPoint pt[3];
  GC top, bot;

  sz = term->scrollBar.width;
  sz2 = sz / 2;

  if ((dirn == UP && term->scrollBar.state == STATE_UP)
      || (dirn == DN && term->scrollBar.state == STATE_DOWN))
    {
      top = term->botShadowGC;
      bot = term->topShadowGC;
    }
  else
    {
      top = term->topShadowGC;
      bot = term->botShadowGC;
    }

  /* fill triangle */
  pt[0].x = x;
  pt[1].x = x + sz - 1;
  pt[2].x = x + sz2;

  if (dirn == UP)
    {
      pt[0].y = pt[1].y = y + sz - 1;
      pt[2].y = y;
    }
  else
    {
      pt[0].y = pt[1].y = y;
      pt[2].y = y + sz - 1;
    }

  XFillPolygon (term->dpy, term->scrollBar.win, term->scrollbarGC,
                pt, 3, Convex, CoordModeOrigin);

  /* draw base */
  XDrawLine (term->dpy, term->scrollBar.win, (dirn == UP ? bot : top),
             pt[0].x, pt[0].y, pt[1].x, pt[1].y);

  /* draw shadow on left */
  pt[1].x = x + sz2 - 1;
  pt[1].y = y + (dirn == UP ? 0 : sz - 1);
  XDrawLine (term->dpy, term->scrollBar.win, top,
             pt[0].x, pt[0].y, pt[1].x, pt[1].y);

#if SHADOW_WIDTH > 1
  /* doubled */
  pt[0].x++;

  if (dirn == UP)
    {
      pt[0].y--;
      pt[1].y++;
    }
  else
    {
      pt[0].y++;
      pt[1].y--;
    }

  XDrawLine (term->dpy, term->scrollBar.win, top,
             pt[0].x, pt[0].y, pt[1].x, pt[1].y);
#endif

  /* draw shadow on right */
  pt[1].x = x + sz - 1;
  /*  pt[2].x = x + sz2; */
  pt[1].y = y + (dirn == UP ? sz - 1 : 0);
  pt[2].y = y + (dirn == UP ? 0 : sz - 1);
  XDrawLine (term->dpy, term->scrollBar.win, bot,
             pt[2].x, pt[2].y, pt[1].x, pt[1].y);

#if SHADOW_WIDTH > 1
  /* doubled */
  pt[1].x--;
  if (dirn == UP)
    {
      pt[2].y++;
      pt[1].y--;
    }
  else
    {
      pt[2].y--;
      pt[1].y++;
    }

  XDrawLine (term->dpy, term->scrollBar.win, bot,
             pt[2].x, pt[2].y, pt[1].x, pt[1].y);
#endif
}

int
rxvt_term::scrollbar_show_rxvt (int update, int last_top, int last_bot, int scrollbar_len)
{
  int sbshadow = scrollBar.shadow;
  int sbwidth = (int)scrollBar.width;

  if ((scrollBar.init & R_SB_RXVT) == 0)
    {
      XGCValues gcvalue;

      scrollBar.init |= R_SB_RXVT;

      gcvalue.foreground = pix_colors[Color_topShadow];
      topShadowGC = XCreateGC (dpy, vt, GCForeground, &gcvalue);
      gcvalue.foreground = pix_colors[Color_bottomShadow];
      botShadowGC = XCreateGC (dpy, vt, GCForeground, &gcvalue);
      gcvalue.foreground = pix_colors[ (depth <= 2 ? Color_fg : Color_scroll)];
      scrollbarGC = XCreateGC (dpy, vt, GCForeground, &gcvalue);
      if (sbshadow)
        {
          XSetWindowBackground (dpy, scrollBar.win, pix_colors_focused[Color_trough]);
          XClearWindow (dpy, scrollBar.win);
        }
    }
  else
    {
      if (update)
        {
          if (last_top < scrollBar.top)
            XClearArea (dpy, scrollBar.win,
                        sbshadow, last_top,
                        sbwidth, (scrollBar.top - last_top),
                        False);

          if (scrollBar.bot < last_bot)
            XClearArea (dpy, scrollBar.win,
                        sbshadow, scrollBar.bot,
                        sbwidth, (last_bot - scrollBar.bot),
                        False);
        }
      else
        XClearWindow (dpy, scrollBar.win);
    }

  /* scrollbar slider */
#ifdef SB_BORDER
  {
    int xofs;

    if (option (Opt_scrollBar_right))
      xofs = 0;
    else
      xofs = sbshadow ? sbwidth : sbwidth - 1;

    XDrawLine (dpy, scrollBar.win, botShadowGC,
               xofs, 0, xofs, scrollBar.end + sbwidth);
  }
#endif

  XFillRectangle (dpy, scrollBar.win, scrollbarGC,
                  sbshadow, scrollBar.top, sbwidth,
                  scrollbar_len);

  if (sbshadow)
    /* trough shadow */
    draw_shadow (this, 0, 0, sbwidth + 2 * sbshadow, scrollBar.end + (sbwidth + 1) + sbshadow);

  /* shadow for scrollbar slider */
  draw_shadow (this, sbshadow, scrollBar.top, sbwidth, scrollbar_len);

  /* Redraw scrollbar arrows */
  draw_button (this, sbshadow, sbshadow,          UP);
  draw_button (this, sbshadow, scrollBar.end + 1, DN);

  return 1;
}
#endif /* RXVT_SCROLLBAR */
/*----------------------- end-of-file (C source) -----------------------*/

Revision:	1.36
Committed:	Tue Feb 19 10:46:03 2008 UTC (16 years, 4 months ago) by ayin
Content type:	text/plain
Branch:	MAIN
Changes since 1.35:	+12 -18 lines
Log Message:	Simplify draw_button.
#	User	Rev	Content
1	root	1.29	/----------------------------------------------------------------------
2	pcg	1.9	* File: scrollbar-rxvt.C
3	pcg	1.1	----------------------------------------------------------------------
4			*
5			* Copyright (c) 1997,1998 mj olesen <olesen@me.QueensU.CA>
6			* Copyright (c) 1999-2001 Geoff Wing <gcw@pobox.com>
7	root	1.28	* Copyright (c) 2004-2006 Marc Lehmann <pcg@goof.com>
8	pcg	1.1	*
9			* This program is free software; you can redistribute it and/or modify
10			* it under the terms of the GNU General Public License as published by
11			* the Free Software Foundation; either version 2 of the License, or
12			* (at your option) any later version.
13			*
14			* This program is distributed in the hope that it will be useful,
15			* but WITHOUT ANY WARRANTY; without even the implied warranty of
16			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17			* GNU General Public License for more details.
18			*
19			* You should have received a copy of the GNU General Public License
20			* along with this program; if not, write to the Free Software
21			* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22			----------------------------------------------------------------------/
23
24			#include "../config.h" /* NECESSARY */
25			#include "rxvt.h" /* NECESSARY */
26
27			/----------------------------------------------------------------------/
28			#if defined(RXVT_SCROLLBAR)
29
30	root	1.24	static void
31	root	1.23	draw_shadow (rxvt_term *term, int x, int y, int w, int h)
32	root	1.24	{
33	root	1.23	int shadow;
34	root	1.24
35	root	1.22	shadow = (w == 0 \|\| h == 0) ? 1 : SHADOW_WIDTH;
36			w += x - 1;
37			h += y - 1;
38	root	1.24
39	root	1.22	for (; shadow-- > 0; x++, y++, w--, h--)
40	root	1.24	{
41	root	1.27	XDrawLine (term->dpy, term->scrollBar.win, term->topShadowGC, x, y, w , y );
42			XDrawLine (term->dpy, term->scrollBar.win, term->topShadowGC, x, y, x , h );
43			XDrawLine (term->dpy, term->scrollBar.win, term->botShadowGC, w, h, w , y + 1);
44			XDrawLine (term->dpy, term->scrollBar.win, term->botShadowGC, w, h, x + 1, h );
45	root	1.24	}
46			}
47	root	1.21
48			/* draw triangular button with a shadow of 2 pixels */
49	root	1.23	static void
50	ayin	1.36	draw_button (rxvt_term *term, int x, int y, int dirn)
51	pcg	1.1	{
52	root	1.23	unsigned int sz, sz2;
53			XPoint pt[3];
54			GC top, bot;
55	pcg	1.6
56	root	1.23	sz = term->scrollBar.width;
57	pcg	1.6	sz2 = sz / 2;
58	root	1.26
59	ayin	1.36	if ((dirn == UP && term->scrollBar.state == STATE_UP)
60			\|\| (dirn == DN && term->scrollBar.state == STATE_DOWN))
61	pcg	1.6	{
62	ayin	1.36	top = term->botShadowGC;
63			bot = term->topShadowGC;
64			}
65			else
66			{
67			top = term->topShadowGC;
68			bot = term->botShadowGC;
69	pcg	1.6	}
70
71			/* fill triangle */
72			pt[0].x = x;
73			pt[1].x = x + sz - 1;
74			pt[2].x = x + sz2;
75	root	1.26
76	pcg	1.6	if (dirn == UP)
77			{
78			pt[0].y = pt[1].y = y + sz - 1;
79			pt[2].y = y;
80			}
81			else
82			{
83			pt[0].y = pt[1].y = y;
84			pt[2].y = y + sz - 1;
85			}
86	root	1.10
87	root	1.27	XFillPolygon (term->dpy, term->scrollBar.win, term->scrollbarGC,
88	root	1.10	pt, 3, Convex, CoordModeOrigin);
89	pcg	1.6
90			/* draw base */
91	root	1.27	XDrawLine (term->dpy, term->scrollBar.win, (dirn == UP ? bot : top),
92	root	1.10	pt[0].x, pt[0].y, pt[1].x, pt[1].y);
93	pcg	1.6
94			/* draw shadow on left */
95			pt[1].x = x + sz2 - 1;
96			pt[1].y = y + (dirn == UP ? 0 : sz - 1);
97	root	1.27	XDrawLine (term->dpy, term->scrollBar.win, top,
98	root	1.10	pt[0].x, pt[0].y, pt[1].x, pt[1].y);
99	pcg	1.1
100	root	1.22	#if SHADOW_WIDTH > 1
101	pcg	1.6	/* doubled */
102			pt[0].x++;
103	root	1.17
104	pcg	1.6	if (dirn == UP)
105			{
106			pt[0].y--;
107			pt[1].y++;
108	pcg	1.1	}
109	pcg	1.6	else
110			{
111			pt[0].y++;
112			pt[1].y--;
113			}
114	root	1.17
115	root	1.27	XDrawLine (term->dpy, term->scrollBar.win, top,
116	root	1.10	pt[0].x, pt[0].y, pt[1].x, pt[1].y);
117	pcg	1.1	#endif
118	root	1.21
119	pcg	1.6	/* draw shadow on right */
120			pt[1].x = x + sz - 1;
121			/* pt[2].x = x + sz2; */
122			pt[1].y = y + (dirn == UP ? sz - 1 : 0);
123			pt[2].y = y + (dirn == UP ? 0 : sz - 1);
124	root	1.27	XDrawLine (term->dpy, term->scrollBar.win, bot,
125	root	1.10	pt[2].x, pt[2].y, pt[1].x, pt[1].y);
126	root	1.17
127	root	1.22	#if SHADOW_WIDTH > 1
128	pcg	1.6	/* doubled */
129			pt[1].x--;
130			if (dirn == UP)
131			{
132			pt[2].y++;
133			pt[1].y--;
134	pcg	1.1	}
135	pcg	1.6	else
136			{
137			pt[2].y--;
138			pt[1].y++;
139			}
140	root	1.10
141	root	1.27	XDrawLine (term->dpy, term->scrollBar.win, bot,
142	root	1.10	pt[2].x, pt[2].y, pt[1].x, pt[1].y);
143	pcg	1.1	#endif
144			}
145
146			int
147	root	1.16	rxvt_term::scrollbar_show_rxvt (int update, int last_top, int last_bot, int scrollbar_len)
148	pcg	1.1	{
149	ayin	1.33	int sbshadow = scrollBar.shadow;
150	root	1.16	int sbwidth = (int)scrollBar.width;
151	pcg	1.1
152	pcg	1.6	if ((scrollBar.init & R_SB_RXVT) == 0)
153			{
154	ayin	1.34	XGCValues gcvalue;
155
156	pcg	1.6	scrollBar.init \|= R_SB_RXVT;
157	root	1.18
158	ayin	1.34	gcvalue.foreground = pix_colors[Color_topShadow];
159			topShadowGC = XCreateGC (dpy, vt, GCForeground, &gcvalue);
160			gcvalue.foreground = pix_colors[Color_bottomShadow];
161			botShadowGC = XCreateGC (dpy, vt, GCForeground, &gcvalue);
162			gcvalue.foreground = pix_colors[ (depth <= 2 ? Color_fg : Color_scroll)];
163			scrollbarGC = XCreateGC (dpy, vt, GCForeground, &gcvalue);
164	pcg	1.6	if (sbshadow)
165			{
166	root	1.27	XSetWindowBackground (dpy, scrollBar.win, pix_colors_focused[Color_trough]);
167			XClearWindow (dpy, scrollBar.win);
168	pcg	1.6	}
169			}
170			else
171			{
172	root	1.16	if (update)
173			{
174			if (last_top < scrollBar.top)
175	root	1.27	XClearArea (dpy, scrollBar.win,
176	root	1.16	sbshadow, last_top,
177			sbwidth, (scrollBar.top - last_top),
178			False);
179
180			if (scrollBar.bot < last_bot)
181	root	1.27	XClearArea (dpy, scrollBar.win,
182	root	1.16	sbshadow, scrollBar.bot,
183			sbwidth, (last_bot - scrollBar.bot),
184			False);
185			}
186			else
187	root	1.27	XClearWindow (dpy, scrollBar.win);
188	pcg	1.1	}
189
190	pcg	1.6	/* scrollbar slider */
191	pcg	1.1	#ifdef SB_BORDER
192	pcg	1.6	{
193	root	1.10	int xofs;
194	pcg	1.1
195	root	1.30	if (option (Opt_scrollBar_right))
196	pcg	1.6	xofs = 0;
197			else
198			xofs = sbshadow ? sbwidth : sbwidth - 1;
199
200	root	1.27	XDrawLine (dpy, scrollBar.win, botShadowGC,
201	root	1.10	xofs, 0, xofs, scrollBar.end + sbwidth);
202	pcg	1.6	}
203			#endif
204	root	1.10
205	root	1.27	XFillRectangle (dpy, scrollBar.win, scrollbarGC,
206	root	1.10	sbshadow, scrollBar.top, sbwidth,
207			scrollbar_len);
208	pcg	1.1
209	pcg	1.6	if (sbshadow)
210			/* trough shadow */
211	root	1.23	draw_shadow (this, 0, 0, sbwidth + 2 * sbshadow, scrollBar.end + (sbwidth + 1) + sbshadow);
212	root	1.10
213	pcg	1.6	/* shadow for scrollbar slider */
214	root	1.23	draw_shadow (this, sbshadow, scrollBar.top, sbwidth, scrollbar_len);
215	pcg	1.6
216	root	1.10	/* Redraw scrollbar arrows */
217	ayin	1.36	draw_button (this, sbshadow, sbshadow, UP);
218			draw_button (this, sbshadow, scrollBar.end + 1, DN);
219	root	1.10
220	pcg	1.6	return 1;
221	pcg	1.1	}
222	ayin	1.31	#endif /* RXVT_SCROLLBAR */
223	pcg	1.1	/----------------------- end-of-file (C source) -----------------------/
224	root	1.18