GPLv3

1 files changed, 285 insertions, 0 deletions

diff --git a/src/scrollbar.C b/src/scrollbar.C
new file mode 100644
index 0000000..698c582
--- /dev/null
+++ b/src/scrollbar.C
@@ -0,0 +1,285 @@
+/*----------------------------------------------------------------------*
+ * File:	scrollbar.C
+ *----------------------------------------------------------------------*
+ *
+ * Copyright (c) 1997,1998 mj olesen <olesen@me.QueensU.CA>
+ * Copyright (c) 1998      Alfredo K. Kojima <kojima@windowmaker.org>
+ *				- N*XTstep like scrollbars
+ * 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 */
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * Map or unmap a scrollbar.  Returns non-zero upon change of state
+ */
+void
+scrollBar_t::map (int map)
+{
+  if (map)
+    {
+      state = SB_STATE_IDLE;
+
+      if (!win)
+        resize ();
+      else
+        XMapWindow (term->dpy, win);
+    }
+  else
+    {
+      state = SB_STATE_OFF;
+
+      if (win)
+        XUnmapWindow (term->dpy, win);
+    }
+}
+
+void
+scrollBar_t::resize ()
+{
+  int delayed_init = 0;
+  int window_sb_x = 0;
+
+  if (term->option (Opt_scrollBar_right))
+    window_sb_x = term->szHint.width - total_width ();
+
+  update_data ();
+
+  if (!win)
+    {
+      /* create the scrollbar window */
+      win = XCreateSimpleWindow (term->dpy,
+                                 term->parent,
+                                 window_sb_x, 0,
+                                 total_width (),
+                                 term->szHint.height,
+                                 0,
+                                 term->pix_colors[Color_fg],
+                                 term->pix_colors[color ()]);
+      XDefineCursor (term->dpy, win, leftptr_cursor);
+
+      XSelectInput (term->dpy, win,
+                   ExposureMask | ButtonPressMask | ButtonReleaseMask
+                   | Button1MotionMask | Button2MotionMask
+                   | Button3MotionMask);
+      term->scrollbar_ev.start (term->display, win);
+
+      delayed_init = 1;
+    }
+  else
+    XMoveResizeWindow (term->dpy, win,
+                       window_sb_x, 0,
+                       total_width (), term->szHint.height);
+
+  show (1);
+
+  if (delayed_init)
+    XMapWindow (term->dpy, win);
+}
+
+/*
+ * Update current scrollbar view w.r.t. slider heights, etc.
+ */
+int
+scrollBar_t::show (int refresh)
+{
+  int ret;
+
+  if (!state)
+    return 0;
+
+  if (refresh)
+    {
+      int sb_top = term->view_start - term->top_row;
+      int sb_bot = sb_top + (term->nrow - 1);
+      int sb_len = max (term->nrow - 1 - term->top_row, 1);
+      int n = min (min_height (), size ());
+
+      top = beg + (sb_top * (size () - n)) / sb_len;
+      bot = top + ecb_div_ru ((sb_bot - sb_top) * (size () - n), sb_len) + n;
+      /* no change */
+      if (top == last_top
+          && bot == last_bot
+          && (state == last_state
+              || !(state == SB_STATE_UP || state == SB_STATE_DOWN)))
+        return 0;
+    }
+
+  ret = (this->*update) (refresh);
+
+  last_top = top;
+  last_bot = bot;
+  last_state = state;
+
+  return ret;
+}
+
+void
+scrollBar_t::setup (rxvt_term *term)
+{
+  int i;
+  const char *scrollalign, *scrollstyle, *thickness;
+
+  this->term = term;
+  scrollalign = term->rs[Rs_scrollBar_align];
+  scrollstyle = term->rs[Rs_scrollstyle];
+  thickness = term->rs[Rs_scrollBar_thickness];
+
+# if defined(RXVT_SCROLLBAR)
+  style = SB_STYLE_RXVT;
+# elif defined(XTERM_SCROLLBAR)
+  style = SB_STYLE_XTERM;
+# elif defined(NEXT_SCROLLBAR)
+  style = SB_STYLE_NEXT;
+# elif defined(PLAIN_SCROLLBAR)
+  style = SB_STYLE_PLAIN;
+#else
+  style = SB_STYLE_RXVT;
+# endif
+
+# if (defined(NEXT_SCROLLBAR) || defined(XTERM_SCROLLBAR) || defined(PLAIN_SCROLLBAR))
+  if (scrollstyle)
+    {
+#  ifdef NEXT_SCROLLBAR
+      if (strncasecmp (scrollstyle, "next", 4) == 0)
+        style = SB_STYLE_NEXT;
+#  endif
+#  ifdef XTERM_SCROLLBAR
+      if (strncasecmp (scrollstyle, "xterm", 5) == 0)
+        style = SB_STYLE_XTERM;
+#  endif
+#  ifdef PLAIN_SCROLLBAR
+      if (strncasecmp (scrollstyle, "plain", 5) == 0)
+        style = SB_STYLE_PLAIN;
+#  endif
+
+    }
+# endif
+  if (style == SB_STYLE_NEXT)
+    width = SB_WIDTH_NEXT;
+  else if (style == SB_STYLE_XTERM)
+    width = SB_WIDTH_XTERM;
+  else if (style == SB_STYLE_PLAIN)
+    width = SB_WIDTH_PLAIN;
+  else /* if (style == SB_STYLE_RXVT) */
+    width = SB_WIDTH_RXVT;
+
+  if (style != SB_STYLE_NEXT)	/* dishonour request - for now */
+    if (thickness && (i = atoi (thickness)) >= SB_WIDTH_MINIMUM)
+      width = min (i, SB_WIDTH_MAXIMUM);
+
+# ifdef RXVT_SCROLLBAR
+  if (! term->option (Opt_scrollBar_floating) && style == SB_STYLE_RXVT)
+    shadow = SHADOW_WIDTH;
+# endif
+
+  /* align = SB_ALIGN_CENTRE; */
+  if (scrollalign)
+    {
+      if (strncasecmp (scrollalign, "top", 3) == 0)
+        align = SB_ALIGN_TOP;
+      else if (strncasecmp (scrollalign, "bottom", 6) == 0)
+        align = SB_ALIGN_BOTTOM;
+    }
+  last_state = SB_STATE_OFF;
+  /* cursor scrollBar: Black-on-White */
+  leftptr_cursor = XCreateFontCursor (term->dpy, XC_left_ptr);
+}
+
+void
+scrollBar_t::destroy ()
+{
+#ifdef XTERM_SCROLLBAR
+  if (xscrollbarGC) XFreeGC (term->dpy, xscrollbarGC);
+  if (ShadowGC)     XFreeGC (term->dpy, ShadowGC);
+#endif
+#ifdef PLAIN_SCROLLBAR
+  if (pscrollbarGC) XFreeGC (term->dpy, pscrollbarGC);
+#endif
+#ifdef NEXT_SCROLLBAR
+  if (blackGC)      XFreeGC (term->dpy, blackGC);
+  if (whiteGC)      XFreeGC (term->dpy, whiteGC);
+  if (grayGC)       XFreeGC (term->dpy, grayGC);
+  if (darkGC)       XFreeGC (term->dpy, darkGC);
+  if (stippleGC)    XFreeGC (term->dpy, stippleGC);
+  if (dimple)       XFreePixmap (term->dpy, dimple);
+  if (upArrow)      XFreePixmap (term->dpy, upArrow);
+  if (downArrow)    XFreePixmap (term->dpy, downArrow);
+  if (upArrowHi)    XFreePixmap (term->dpy, upArrowHi);
+  if (downArrowHi)  XFreePixmap (term->dpy, downArrowHi);
+#endif
+#ifdef RXVT_SCROLLBAR
+  if (topShadowGC)  XFreeGC (term->dpy, topShadowGC);
+  if (botShadowGC)  XFreeGC (term->dpy, botShadowGC);
+  if (scrollbarGC)  XFreeGC (term->dpy, scrollbarGC);
+#endif
+}
+
+int
+scrollBar_t::color ()
+{
+#ifdef RXVT_SCROLLBAR
+  if (style == SB_STYLE_RXVT && shadow)
+    return Color_trough;
+  else
+#endif
+    return Color_border;
+}
+
+void
+scrollBar_t::update_data ()
+{
+#if defined(PLAIN_SCROLLBAR)
+  if (style == SB_STYLE_PLAIN)
+    {
+      beg = 0;
+      end = term->szHint.height;
+      update = &scrollBar_t::show_plain;
+    }
+#endif
+#if defined(XTERM_SCROLLBAR)
+  if (style == SB_STYLE_XTERM)
+    {
+      beg = 0;
+      end = term->szHint.height;
+      update = &scrollBar_t::show_xterm;
+    }
+#endif
+#if defined(NEXT_SCROLLBAR)
+  if (style == SB_STYLE_NEXT)
+    {
+      beg = 0;
+      end = term->szHint.height - (SB_BUTTON_TOTAL_HEIGHT + SB_PADDING);
+      update = &scrollBar_t::show_next;
+    }
+#endif
+#if defined(RXVT_SCROLLBAR)
+  if (style == SB_STYLE_RXVT)
+    {
+      beg = (width + 1) + shadow;
+      end = term->szHint.height - beg;
+      update = &scrollBar_t::show_rxvt;
+    }
+#endif
+}
+
+/*----------------------- end-of-file (C source) -----------------------*/
+