GPLv3

1 files changed, 222 insertions, 0 deletions

diff --git a/src/scrollbar-rxvt.C b/src/scrollbar-rxvt.C
new file mode 100644
index 0000000..6359081
--- /dev/null
+++ b/src/scrollbar-rxvt.C
@@ -0,0 +1,222 @@
+/*----------------------------------------------------------------------*
+ * 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 <schmorp@schmorp.de>
+ *
+ * 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 3 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 (scrollBar_t *sb, int x, int y, int w, int h)
+{
+  int shadow;
+  Drawable d = sb->win;
+  Display *dpy = sb->term->dpy;
+
+  shadow = (w == 0 || h == 0) ? 1 : SHADOW_WIDTH;
+  w += x - 1;
+  h += y - 1;
+
+  for (; shadow-- > 0; x++, y++, w--, h--)
+    {
+      XDrawLine (dpy, d, sb->topShadowGC, x, y, w    , y    );
+      XDrawLine (dpy, d, sb->topShadowGC, x, y, x    , h    );
+      XDrawLine (dpy, d, sb->botShadowGC, w, h, w    , y + 1);
+      XDrawLine (dpy, d, sb->botShadowGC, w, h, x + 1, h    );
+    }
+}
+
+/* draw triangular button with a shadow of 2 pixels */
+static void
+draw_button (scrollBar_t *sb, int x, int y, int dirn)
+{
+  unsigned int sz, sz2;
+  XPoint pt[3];
+  GC top, bot;
+  Drawable d = sb->win;
+  Display *dpy = sb->term->dpy;
+
+  sz = sb->width;
+  sz2 = sz / 2;
+
+  if ((dirn == UP && sb->state == SB_STATE_UP)
+      || (dirn == DN && sb->state == SB_STATE_DOWN))
+    {
+      top = sb->botShadowGC;
+      bot = sb->topShadowGC;
+    }
+  else
+    {
+      top = sb->topShadowGC;
+      bot = sb->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 (dpy, d, sb->scrollbarGC,
+                pt, 3, Convex, CoordModeOrigin);
+
+  /* draw base */
+  XDrawLine (dpy, d, (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 (dpy, d, 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 (dpy, d, 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 (dpy, d, 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 (dpy, d, bot,
+             pt[2].x, pt[2].y, pt[1].x, pt[1].y);
+#endif
+}
+
+int
+scrollBar_t::show_rxvt (int update)
+{
+  int sbwidth = (int)width;
+
+  if ((init & SB_STYLE_RXVT) == 0)
+    {
+      XGCValues gcvalue;
+
+      init |= SB_STYLE_RXVT;
+
+      gcvalue.foreground = term->pix_colors[Color_topShadow];
+      topShadowGC = XCreateGC (term->dpy, term->vt, GCForeground, &gcvalue);
+      gcvalue.foreground = term->pix_colors[Color_bottomShadow];
+      botShadowGC = XCreateGC (term->dpy, term->vt, GCForeground, &gcvalue);
+      gcvalue.foreground = term->pix_colors[ (term->depth <= 2 ? Color_fg : Color_scroll)];
+      scrollbarGC = XCreateGC (term->dpy, term->vt, GCForeground, &gcvalue);
+    }
+  else
+    {
+      if (update)
+        {
+          if (last_top < top)
+            XClearArea (term->dpy, win,
+                        shadow, last_top,
+                        sbwidth, (top - last_top),
+                        False);
+
+          if (bot < last_bot)
+            XClearArea (term->dpy, win,
+                        shadow, bot,
+                        sbwidth, (last_bot - bot),
+                        False);
+        }
+      else
+        XClearWindow (term->dpy, win);
+    }
+
+  /* scrollbar slider */
+#ifdef SB_BORDER
+  {
+    int xofs;
+
+    if (term->option (Opt_scrollBar_right))
+      xofs = 0;
+    else
+      xofs = shadow ? sbwidth : sbwidth - 1;
+
+    XDrawLine (term->dpy, win, botShadowGC,
+               xofs, 0, xofs, end + sbwidth);
+  }
+#endif
+
+  XFillRectangle (term->dpy, win, scrollbarGC,
+                  shadow, top, sbwidth,
+                  bot - top);
+
+  if (shadow)
+    /* trough shadow */
+    draw_shadow (this, 0, 0, sbwidth + 2 * shadow, end + (sbwidth + 1) + shadow);
+
+  /* shadow for scrollbar slider */
+  draw_shadow (this, shadow, top, sbwidth, bot - top);
+
+  /* Redraw scrollbar arrows */
+  draw_button (this, shadow, shadow, UP);
+  draw_button (this, shadow, end + 1,  DN);
+
+  return 1;
+}
+#endif /* RXVT_SCROLLBAR */
+/*----------------------- end-of-file (C source) -----------------------*/
+