/*--------------------------------*-C-*---------------------------------* * File: sbar.c * * Copyright 1992 John Bovey, University of Kent at Canterbury. * * You can do what you like with this source code as long as you don't * try to make money out of it and you include an unaltered copy of this * message (including the copyright). * * This module has been heavily modified by R. Nation * (nation@rocket.sanders.lockheed.com). * No additional restrictions are applied * * Extensive modifications by mj olesen * No additional restrictions are applied. * * As usual, the author accepts no responsibility for anything, nor does * he guarantee anything whatsoever. *----------------------------------------------------------------------*/ #include "rxvt.h" #include #include "sbar.h" #include "xsetup.h" /*----------------------------------------------------------------------* * extern functions referenced */ /*----------------------------------------------------------------------* * extern variables referenced */ /*----------------------------------------------------------------------* * extern variables declared here */ /*----------------------------------------------------------------------* * local variables */ #ifdef NO_SCROLLBAR void sbar_init (Window win, XGCValues *gcv) {} #else /* NO_SCROLLBAR */ # ifdef XTERM_SCROLLBAR /* bitmap scrollbar */ static GC sbarGC; # define sb_width 12 # define sb_height 2 static char sb_bits[] = { 0x55, 0x05, 0xaa, 0x0a}; # if (SB_WIDTH != sb_width) Error, check scrollbar width # endif # else static GC topShadowGC, bottomShadowGC; # endif /* ! XTERM_SCROLLBAR */ /*----------------------------------------------------------------------* * local functions referenced */ /*----------------------------------------------------------------------*/ /* * Initialize scrollbar data structures - called just once, * gcv already contains foreground, background, font * * The calculations of topShadow/bottomShadow values are adapted from the * fvwm window manager. */ void sbar_init (Window win, XGCValues *gcv) { # ifdef XTERM_SCROLLBAR gcv->fill_style = FillOpaqueStippled; gcv->stipple = XCreateBitmapFromData (Xdisplay, sbar.sb, sb_bits, sb_width, sb_height); if (!gcv->stipple) { print_error ("can't create bitmap"); exit (EXIT_FAILURE); } sbarGC = XCreateGC (Xdisplay, win, GCForeground|GCBackground|GCFillStyle|GCStipple, gcv); Options &= ~(Opt_sbArrows); # else /* XTERM_SCROLLBAR */ XColor xcol; if (!(Options & Opt_scrollBar)) return; if (!XParseColor (Xdisplay, Xcmap, rs_color [SCROLLCOLOR], &xcol) || !XAllocColor (Xdisplay, Xcmap, &xcol)) pixel_colors [SCROLLCOLOR] = pixel_colors [COLORBG]; else pixel_colors [SCROLLCOLOR] = xcol.pixel; pixel_colors [BOTTOMSHADOWCOLOR] = pixel_colors [SCROLLCOLOR]; pixel_colors [TOPSHADOWCOLOR] = pixel_colors [SCROLLCOLOR]; if (Xdepth > 2) { XColor white; int okay; if (rs_color [BOTTOMSHADOWCOLOR] != NULL) { okay = (XParseColor (Xdisplay, Xcmap, rs_color [BOTTOMSHADOWCOLOR], &xcol) && XAllocColor (Xdisplay, Xcmap, &xcol)); } else { /* find bottomShadow color from scrollColor */ /* pixel_colors [BOTTOMSHADOWCOLOR] = pixel_colors [SCROLLCOLOR]; */ xcol.pixel = pixel_colors [SCROLLCOLOR]; XQueryColor (Xdisplay, Xcmap, &xcol); xcol.red = ((xcol.red) / 2); xcol.green = ((xcol.green) / 2); xcol.blue = ((xcol.blue) / 2); okay = XAllocColor (Xdisplay, Xcmap, &xcol); } if (okay) { pixel_colors [BOTTOMSHADOWCOLOR] = xcol.pixel; } else { print_error ("can't allocate bottomShadow"); pixel_colors [BOTTOMSHADOWCOLOR] = pixel_colors [COLOR_BLACK]; } if (rs_color [TOPSHADOWCOLOR] != NULL) { okay = (XParseColor (Xdisplay, Xcmap, rs_color [TOPSHADOWCOLOR], &xcol) && XAllocColor (Xdisplay, Xcmap, &xcol)); } else { /* find topShadow color from scrollColor */ /* pixel_colors [TOPSHADOWCOLOR] = pixel_colors [SCROLLCOLOR]; */ xcol.pixel = pixel_colors [SCROLLCOLOR]; XQueryColor (Xdisplay, Xcmap, &xcol); white.pixel = WhitePixel (Xdisplay, Xscreen); XQueryColor (Xdisplay, Xcmap, &white); # ifndef min # define min(a,b) (((a)<(b)) ? (a) : (b)) # define max(a,b) (((a)>(b)) ? (a) : (b)) # endif xcol.red = max ((white.red / 5), xcol.red); xcol.green = max ((white.green / 5), xcol.green); xcol.blue = max ((white.blue / 5), xcol.blue); xcol.red = min (white.red, (xcol.red * 7) / 5); xcol.green = min (white.green, (xcol.green * 7) / 5); xcol.blue = min (white.blue, (xcol.blue * 7) / 5); okay = XAllocColor (Xdisplay, Xcmap, &xcol); } if (okay) { pixel_colors [TOPSHADOWCOLOR] = xcol.pixel; } else { print_error ("can't allocate topShadow"); pixel_colors [TOPSHADOWCOLOR] = pixel_colors [COLOR_WHITE]; } } gcv->foreground = pixel_colors [TOPSHADOWCOLOR]; gcv->background = pixel_colors [TOPSHADOWCOLOR]; topShadowGC = XCreateGC (Xdisplay, win, GCForeground|GCBackground, gcv); gcv->foreground = pixel_colors [BOTTOMSHADOWCOLOR]; gcv->background = pixel_colors [BOTTOMSHADOWCOLOR]; bottomShadowGC = XCreateGC (Xdisplay, win, GCForeground|GCBackground, gcv); XSetWindowBackground (Xdisplay, sbar.sb, pixel_colors [SCROLLCOLOR]); # endif /* XTERM_SCROLLBAR */ sbar_show (1); } # ifndef XTERM_SCROLLBAR /* * draw bottomShadow/highlight along top/left sides of the window */ static void Draw_tl (Window win, GC gc, int x, int y, int w, int h) { int i; w += (x - 1); h += (y - 1); for (i = 0; i < SB_SHADOW; i++, x++, y++, w--, h--) { XDrawLine (Xdisplay, win, gc, x, y, w, y); XDrawLine (Xdisplay, win, gc, x, y, x, h); } } /* * draw bottomShadow/highlight along the bottom/right sides of the window */ static void Draw_br (Window win, GC gc, int x, int y, int w, int h) { int i; w += (x - 1); h += (y - 1); x++; y++; for (i = 0; i < SB_SHADOW; i++, x++, y++, w--, h--) { XDrawLine (Xdisplay, win, gc, w, h, w, y); XDrawLine (Xdisplay, win, gc, w, h, x, h); } } /* draw triangular up button with a shadow of 2 pixels */ static void Draw_up_button (Window win, GC gc1, GC gc2, int x, int y, int size) { XSegment seg [4]; int n; n = 0; seg[n].x1 = x + size/2; seg[n].y1 = y; seg[n].x2 = x; seg[n].y2 = y + size - 1; n++; seg[n].x1 = x + size/2; seg[n].y1 = y + 1; seg[n].x2 = x + 1; seg[n].y2 = y + size - 2; n++; XDrawSegments (Xdisplay, win, gc1, seg, n); n = 0; seg[n].x1 = x + size/2 + 1; seg[n].y1 = y + 1; seg[n].x2 = x + size - 1; seg[n].y2 = y + size - 2; n++; seg[n].x1 = x + size/2 + 1; seg[n].y1 = y + 2; seg[n].x2 = x + size - 2; seg[n].y2 = y + size - 3; n++; seg[n].x1 = x + 1; seg[n].y1 = y + size - 1; seg[n].x2 = x + size - 1; seg[n].y2 = y + size - 1; n++; seg[n].x1 = x + 2; seg[n].y1 = y + size - 2; seg[n].x2 = x + size - 1; seg[n].y2 = y + size - 2; n++; XDrawSegments (Xdisplay, win, gc2, seg, n); } /* draw triangular down button with a shadow of 2 pixels */ static void Draw_dn_button (Window win, GC gc1, GC gc2, int x, int y, int size) { XSegment seg[4]; int n; n = 0; seg[n].x1 = x + size - 1; seg[n].y1 = y; seg[n].x2 = x + size/2; seg[n].y2 = y + size - 1; n++; seg[n].x1 = x + size - 2; seg[n].y1 = y + 1; seg[n].x2 = x + size/2; seg[n].y2 = y + size - 2; n++; XDrawSegments (Xdisplay, win, gc2, seg, n); n = 0; seg[n].x1 = x; seg[n].y1 = y; seg[n].x2 = x + size/2 - 1; seg[n].y2 = y + size - 2; n++; seg[n].x1 = x + 1; seg[n].y1 = y + 1; seg[n].x2 = x + size/2 - 1; seg[n].y2 = y + size - 3; n++; seg[n].x1 = x; seg[n].y1 = y; seg[n].x2 = x + size - 2; seg[n].y2 = y; n++; seg[n].x1 = x; seg[n].y1 = y + 1; seg[n].x2 = x + size - 3; seg[n].y2 = y + 1; n++; XDrawSegments (Xdisplay, win, gc1, seg, n); } # endif /* XTERM_SCROLLBAR */ /* * Redraw scrollbar */ int sbar_show (int update) { /* old, drawn values */ static int last_top, last_bot, last_len; if (update) { int top, bot, len; top = (TermWin.hist_count - TermWin.hist_start); bot = top + (TermWin.nrow-1); len = (TermWin.hist_count + (TermWin.nrow-1)); sbar.top = (top * (sbar.end - sbar.beg)) / len + sbar.beg; sbar.bot = (bot * (sbar.end - sbar.beg)) / len + sbar.beg; if (sbar.top < sbar.beg) sbar.top = sbar.beg; if (sbar.bot > sbar.end) sbar.top = sbar.end; sbar.len = (sbar.bot - sbar.top); } if (!(Options & Opt_scrollBar) || (update && (sbar.top == last_top) && (sbar.bot == last_bot) && (sbar.len == last_len))) return 0; /* no change */ XClearWindow (Xdisplay, sbar.sb); last_top = sbar.top; last_bot = sbar.bot; last_len = sbar.len; # ifdef XTERM_SCROLLBAR XFillRectangle (Xdisplay, sbar.sb, sbarGC, 0, sbar.top, sbar.width, sbar.len); # else /* XTERM_SCROLLBAR */ # define Draw_shadow(win,tlGC,brGC,x,y,w,h) do {\ Draw_tl (win, tlGC, x, y, w, h);\ Draw_br (win, brGC, x, y, w, h);\ } while (0) /* * draw shadow for entire scrollbar */ Draw_shadow (sbar.parent, bottomShadowGC, topShadowGC, 0, 0, (sbar.width + 2 * SB_SHADOW), ((sbar.beg + sbar.end) + 2 * SB_SHADOW)); /* * draw the actual scrollbar */ Draw_shadow (sbar.sb, topShadowGC, bottomShadowGC, 0, sbar.top, sbar.width, sbar.len); if (Options & Opt_sbArrows) { /* * Redraw the scrollbar arrows */ Draw_up_button (sbar.sb, (sbar_isUp () ? bottomShadowGC : topShadowGC), (sbar_isUp () ? topShadowGC : bottomShadowGC), 1, 1, sbar.width - 2); Draw_dn_button (sbar.sb, (sbar_isDn () ? bottomShadowGC : topShadowGC), (sbar_isDn () ? topShadowGC : bottomShadowGC), 1, sbar.end + 1, sbar.width - 2); } # endif /* XTERM_SCROLLBAR */ return 1; } #endif /* NO_SCROLLBAR */ /*----------------------- end-of-file (C source) -----------------------*/