rxvt-unicode/src/scrollbar-rxvt.C

/*--------------------------------*-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      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)

#define SHADOW_WIDTH 1

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->display->display, term->scrollBar.win, term->topShadowGC, x, y, w, y);
      XDrawLine (term->display->display, term->scrollBar.win, term->topShadowGC, x, y, x, h);
      XDrawLine (term->display->display, term->scrollBar.win, term->botShadowGC, w, h, w, y + 1);
      XDrawLine (term->display->display, 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->display->display, term->scrollBar.win, term->scrollbarGC,
                pt, 3, Convex, CoordModeOrigin);

  /* draw base */
  XDrawLine (term->display->display, 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->display->display, 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->display->display, 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->display->display, 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->display->display, 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 = sb_shadow;
  int sbwidth = (int)scrollBar.width;

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

      if (sbshadow)
        {
          XSetWindowBackground (display->display, scrollBar.win, pix_colors_focused[Color_trough]);
          XClearWindow (display->display, scrollBar.win);
        }
    }
  else
    {
      if (update)
        {
          if (last_top < scrollBar.top)
            XClearArea (display->display, scrollBar.win,
                        sbshadow, last_top,
                        sbwidth, (scrollBar.top - last_top),
                        False);

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

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

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

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

  XFillRectangle (display->display, 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:	1.23
Committed:	Mon Jan 16 18:09:28 2006 UTC (18 years, 4 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.22:	+27 -34 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	pcg	1.1	/---------------------------------C----------------------------------
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	pcg	1.9	* Copyright (c) 2004 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	1.22	#define SHADOW_WIDTH 1
31
32			static void
33	root	1.23	draw_shadow (rxvt_term *term, int x, int y, int w, int h)
34	root	1.22	{
35	root	1.23	int shadow;
36	root	1.22
37			shadow = (w == 0 \|\| h == 0) ? 1 : SHADOW_WIDTH;
38			w += x - 1;
39			h += y - 1;
40			for (; shadow-- > 0; x++, y++, w--, h--)
41			{
42	root	1.23	XDrawLine (term->display->display, term->scrollBar.win, term->topShadowGC, x, y, w, y);
43			XDrawLine (term->display->display, term->scrollBar.win, term->topShadowGC, x, y, x, h);
44			XDrawLine (term->display->display, term->scrollBar.win, term->botShadowGC, w, h, w, y + 1);
45			XDrawLine (term->display->display, term->scrollBar.win, term->botShadowGC, w, h, x + 1, h);
46	root	1.22	}
47			}
48	root	1.21
49			/* draw triangular button with a shadow of 2 pixels */
50	root	1.23	static void
51			draw_button (rxvt_term *term, int x, int y, int state, int dirn)
52	pcg	1.1	{
53	root	1.23	unsigned int sz, sz2;
54			XPoint pt[3];
55			GC top, bot;
56	pcg	1.6
57	root	1.23	sz = term->scrollBar.width;
58	pcg	1.6	sz2 = sz / 2;
59			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			if (dirn == UP)
79			{
80			pt[0].y = pt[1].y = y + sz - 1;
81			pt[2].y = y;
82			}
83			else
84			{
85			pt[0].y = pt[1].y = y;
86			pt[2].y = y + sz - 1;
87			}
88	root	1.10
89	root	1.23	XFillPolygon (term->display->display, term->scrollBar.win, term->scrollbarGC,
90	root	1.10	pt, 3, Convex, CoordModeOrigin);
91	pcg	1.6
92			/* draw base */
93	root	1.23	XDrawLine (term->display->display, term->scrollBar.win, (dirn == UP ? bot : top),
94	root	1.10	pt[0].x, pt[0].y, pt[1].x, pt[1].y);
95	pcg	1.6
96			/* draw shadow on left */
97			pt[1].x = x + sz2 - 1;
98			pt[1].y = y + (dirn == UP ? 0 : sz - 1);
99	root	1.23	XDrawLine (term->display->display, term->scrollBar.win, top,
100	root	1.10	pt[0].x, pt[0].y, pt[1].x, pt[1].y);
101	pcg	1.1
102	root	1.22	#if SHADOW_WIDTH > 1
103	pcg	1.6	/* doubled */
104			pt[0].x++;
105	root	1.17
106	pcg	1.6	if (dirn == UP)
107			{
108			pt[0].y--;
109			pt[1].y++;
110	pcg	1.1	}
111	pcg	1.6	else
112			{
113			pt[0].y++;
114			pt[1].y--;
115			}
116	root	1.17
117	root	1.23	XDrawLine (term->display->display, term->scrollBar.win, top,
118	root	1.10	pt[0].x, pt[0].y, pt[1].x, pt[1].y);
119	pcg	1.1	#endif
120	root	1.21
121	pcg	1.6	/* draw shadow on right */
122			pt[1].x = x + sz - 1;
123			/* pt[2].x = x + sz2; */
124			pt[1].y = y + (dirn == UP ? sz - 1 : 0);
125			pt[2].y = y + (dirn == UP ? 0 : sz - 1);
126	root	1.23	XDrawLine (term->display->display, term->scrollBar.win, bot,
127	root	1.10	pt[2].x, pt[2].y, pt[1].x, pt[1].y);
128	root	1.17
129	root	1.22	#if SHADOW_WIDTH > 1
130	pcg	1.6	/* doubled */
131			pt[1].x--;
132			if (dirn == UP)
133			{
134			pt[2].y++;
135			pt[1].y--;
136	pcg	1.1	}
137	pcg	1.6	else
138			{
139			pt[2].y--;
140			pt[1].y++;
141			}
142	root	1.10
143	root	1.23	XDrawLine (term->display->display, term->scrollBar.win, bot,
144	root	1.10	pt[2].x, pt[2].y, pt[1].x, pt[1].y);
145	pcg	1.1	#endif
146			}
147
148			int
149	root	1.16	rxvt_term::scrollbar_show_rxvt (int update, int last_top, int last_bot, int scrollbar_len)
150	pcg	1.1	{
151	root	1.16	int sbshadow = sb_shadow;
152			int sbwidth = (int)scrollBar.width;
153	pcg	1.1
154	pcg	1.6	if ((scrollBar.init & R_SB_RXVT) == 0)
155			{
156			scrollBar.init \|= R_SB_RXVT;
157	root	1.18
158	pcg	1.6	if (sbshadow)
159			{
160	root	1.16	XSetWindowBackground (display->display, scrollBar.win, pix_colors_focused[Color_trough]);
161	pcg	1.8	XClearWindow (display->display, scrollBar.win);
162	pcg	1.6	}
163			}
164			else
165			{
166	root	1.16	if (update)
167			{
168			if (last_top < scrollBar.top)
169			XClearArea (display->display, scrollBar.win,
170			sbshadow, last_top,
171			sbwidth, (scrollBar.top - last_top),
172			False);
173
174			if (scrollBar.bot < last_bot)
175			XClearArea (display->display, scrollBar.win,
176			sbshadow, scrollBar.bot,
177			sbwidth, (last_bot - scrollBar.bot),
178			False);
179			}
180			else
181			XClearWindow (display->display, scrollBar.win);
182	pcg	1.1	}
183
184	pcg	1.6	/* scrollbar slider */
185	pcg	1.1	#ifdef SB_BORDER
186	pcg	1.6	{
187	root	1.10	int xofs;
188	pcg	1.1
189	root	1.19	if (OPTION (Opt_scrollBar_right))
190	pcg	1.6	xofs = 0;
191			else
192			xofs = sbshadow ? sbwidth : sbwidth - 1;
193
194	pcg	1.8	XDrawLine (display->display, scrollBar.win, botShadowGC,
195	root	1.10	xofs, 0, xofs, scrollBar.end + sbwidth);
196	pcg	1.6	}
197			#endif
198	root	1.10
199	pcg	1.8	XFillRectangle (display->display, scrollBar.win, scrollbarGC,
200	root	1.10	sbshadow, scrollBar.top, sbwidth,
201			scrollbar_len);
202	pcg	1.1
203	pcg	1.6	if (sbshadow)
204			/* trough shadow */
205	root	1.23	draw_shadow (this, 0, 0, sbwidth + 2 * sbshadow, scrollBar.end + (sbwidth + 1) + sbshadow);
206	root	1.10
207	pcg	1.6	/* shadow for scrollbar slider */
208	root	1.23	draw_shadow (this, sbshadow, scrollBar.top, sbwidth, scrollbar_len);
209	pcg	1.6
210	root	1.10	/* Redraw scrollbar arrows */
211	root	1.23	draw_button (this, sbshadow, sbshadow, (scrollbar_isUp () ? -1 : +1), UP);
212			draw_button (this, sbshadow, scrollBar.end + 1, (scrollbar_isDn () ? -1 : +1), DN);
213	root	1.10
214	pcg	1.6	return 1;
215	pcg	1.1	}
216			#endif /* RXVT_SCROLLBAR */
217			/----------------------- end-of-file (C source) -----------------------/
218	root	1.18