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 state, int dirn)
{
  unsigned int sz, sz2;
  XPoint pt[3];
  GC top, bot;

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

  switch (state)
    {
      case +1:
        top = term->topShadowGC;
        bot = term->botShadowGC;
        break;
      case -1:
        top = term->botShadowGC;
        bot = term->topShadowGC;
        break;
      default:
        top = bot = term->scrollbarGC;
        break;
    }

  /* 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,          (scrollbar_isUp () ? -1 : +1), UP);
  draw_button (this, sbshadow, scrollBar.end + 1, (scrollbar_isDn () ? -1 : +1), DN);

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

Revision:	1.34
Committed:	Mon Dec 31 15:45:29 2007 UTC (16 years, 4 months ago) by ayin
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-9_0, rel-9_02, rel-9_01
Changes since 1.33:	+8 -0 lines
Log Message:	Init graphics contexts for rxvt scrollbar in scrollbar_show_rxvt.
#	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			draw_button (rxvt_term *term, int x, int y, int state, 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	pcg	1.6	switch (state)
60			{
61			case +1:
62	root	1.23	top = term->topShadowGC;
63			bot = term->botShadowGC;
64	pcg	1.6	break;
65			case -1:
66	root	1.23	top = term->botShadowGC;
67			bot = term->topShadowGC;
68	pcg	1.6	break;
69			default:
70	root	1.23	top = bot = term->scrollbarGC;
71	pcg	1.6	break;
72			}
73
74			/* fill triangle */
75			pt[0].x = x;
76			pt[1].x = x + sz - 1;
77			pt[2].x = x + sz2;
78	root	1.26
79	pcg	1.6	if (dirn == UP)
80			{
81			pt[0].y = pt[1].y = y + sz - 1;
82			pt[2].y = y;
83			}
84			else
85			{
86			pt[0].y = pt[1].y = y;
87			pt[2].y = y + sz - 1;
88			}
89	root	1.10
90	root	1.27	XFillPolygon (term->dpy, term->scrollBar.win, term->scrollbarGC,
91	root	1.10	pt, 3, Convex, CoordModeOrigin);
92	pcg	1.6
93			/* draw base */
94	root	1.27	XDrawLine (term->dpy, term->scrollBar.win, (dirn == UP ? bot : top),
95	root	1.10	pt[0].x, pt[0].y, pt[1].x, pt[1].y);
96	pcg	1.6
97			/* draw shadow on left */
98			pt[1].x = x + sz2 - 1;
99			pt[1].y = y + (dirn == UP ? 0 : sz - 1);
100	root	1.27	XDrawLine (term->dpy, term->scrollBar.win, top,
101	root	1.10	pt[0].x, pt[0].y, pt[1].x, pt[1].y);
102	pcg	1.1
103	root	1.22	#if SHADOW_WIDTH > 1
104	pcg	1.6	/* doubled */
105			pt[0].x++;
106	root	1.17
107	pcg	1.6	if (dirn == UP)
108			{
109			pt[0].y--;
110			pt[1].y++;
111	pcg	1.1	}
112	pcg	1.6	else
113			{
114			pt[0].y++;
115			pt[1].y--;
116			}
117	root	1.17
118	root	1.27	XDrawLine (term->dpy, term->scrollBar.win, top,
119	root	1.10	pt[0].x, pt[0].y, pt[1].x, pt[1].y);
120	pcg	1.1	#endif
121	root	1.21
122	pcg	1.6	/* draw shadow on right */
123			pt[1].x = x + sz - 1;
124			/* pt[2].x = x + sz2; */
125			pt[1].y = y + (dirn == UP ? sz - 1 : 0);
126			pt[2].y = y + (dirn == UP ? 0 : sz - 1);
127	root	1.27	XDrawLine (term->dpy, term->scrollBar.win, bot,
128	root	1.10	pt[2].x, pt[2].y, pt[1].x, pt[1].y);
129	root	1.17
130	root	1.22	#if SHADOW_WIDTH > 1
131	pcg	1.6	/* doubled */
132			pt[1].x--;
133			if (dirn == UP)
134			{
135			pt[2].y++;
136			pt[1].y--;
137	pcg	1.1	}
138	pcg	1.6	else
139			{
140			pt[2].y--;
141			pt[1].y++;
142			}
143	root	1.10
144	root	1.27	XDrawLine (term->dpy, term->scrollBar.win, bot,
145	root	1.10	pt[2].x, pt[2].y, pt[1].x, pt[1].y);
146	pcg	1.1	#endif
147			}
148
149			int
150	root	1.16	rxvt_term::scrollbar_show_rxvt (int update, int last_top, int last_bot, int scrollbar_len)
151	pcg	1.1	{
152	ayin	1.33	int sbshadow = scrollBar.shadow;
153	root	1.16	int sbwidth = (int)scrollBar.width;
154	pcg	1.1
155	pcg	1.6	if ((scrollBar.init & R_SB_RXVT) == 0)
156			{
157	ayin	1.34	XGCValues gcvalue;
158
159	pcg	1.6	scrollBar.init \|= R_SB_RXVT;
160	root	1.18
161	ayin	1.34	gcvalue.foreground = pix_colors[Color_topShadow];
162			topShadowGC = XCreateGC (dpy, vt, GCForeground, &gcvalue);
163			gcvalue.foreground = pix_colors[Color_bottomShadow];
164			botShadowGC = XCreateGC (dpy, vt, GCForeground, &gcvalue);
165			gcvalue.foreground = pix_colors[ (depth <= 2 ? Color_fg : Color_scroll)];
166			scrollbarGC = XCreateGC (dpy, vt, GCForeground, &gcvalue);
167	pcg	1.6	if (sbshadow)
168			{
169	root	1.27	XSetWindowBackground (dpy, scrollBar.win, pix_colors_focused[Color_trough]);
170			XClearWindow (dpy, scrollBar.win);
171	pcg	1.6	}
172			}
173			else
174			{
175	root	1.16	if (update)
176			{
177			if (last_top < scrollBar.top)
178	root	1.27	XClearArea (dpy, scrollBar.win,
179	root	1.16	sbshadow, last_top,
180			sbwidth, (scrollBar.top - last_top),
181			False);
182
183			if (scrollBar.bot < last_bot)
184	root	1.27	XClearArea (dpy, scrollBar.win,
185	root	1.16	sbshadow, scrollBar.bot,
186			sbwidth, (last_bot - scrollBar.bot),
187			False);
188			}
189			else
190	root	1.27	XClearWindow (dpy, scrollBar.win);
191	pcg	1.1	}
192
193	pcg	1.6	/* scrollbar slider */
194	pcg	1.1	#ifdef SB_BORDER
195	pcg	1.6	{
196	root	1.10	int xofs;
197	pcg	1.1
198	root	1.30	if (option (Opt_scrollBar_right))
199	pcg	1.6	xofs = 0;
200			else
201			xofs = sbshadow ? sbwidth : sbwidth - 1;
202
203	root	1.27	XDrawLine (dpy, scrollBar.win, botShadowGC,
204	root	1.10	xofs, 0, xofs, scrollBar.end + sbwidth);
205	pcg	1.6	}
206			#endif
207	root	1.10
208	root	1.27	XFillRectangle (dpy, scrollBar.win, scrollbarGC,
209	root	1.10	sbshadow, scrollBar.top, sbwidth,
210			scrollbar_len);
211	pcg	1.1
212	pcg	1.6	if (sbshadow)
213			/* trough shadow */
214	root	1.23	draw_shadow (this, 0, 0, sbwidth + 2 * sbshadow, scrollBar.end + (sbwidth + 1) + sbshadow);
215	root	1.10
216	pcg	1.6	/* shadow for scrollbar slider */
217	root	1.23	draw_shadow (this, sbshadow, scrollBar.top, sbwidth, scrollbar_len);
218	pcg	1.6
219	root	1.10	/* Redraw scrollbar arrows */
220	root	1.23	draw_button (this, sbshadow, sbshadow, (scrollbar_isUp () ? -1 : +1), UP);
221			draw_button (this, sbshadow, scrollBar.end + 1, (scrollbar_isDn () ? -1 : +1), DN);
222	root	1.10
223	pcg	1.6	return 1;
224	pcg	1.1	}
225	ayin	1.31	#endif /* RXVT_SCROLLBAR */
226	pcg	1.1	/----------------------- end-of-file (C source) -----------------------/
227	root	1.18