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/*--------------------------------*-C-*---------------------------------* |
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* File: xpm.C |
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*----------------------------------------------------------------------* |
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* |
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* All portions of code are copyright by their respective author/s. |
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* Copyright (c) 1997 Carsten Haitzler <raster@zip.com.au> |
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* Copyright (c) 1997,1998 Oezguer Kesim <kesim@math.fu-berlin.de> |
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* Copyright (c) 1998-2001 Geoff Wing <gcw@pobox.com> |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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*---------------------------------------------------------------------*/ |
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|
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#include "../config.h" /* NECESSARY */ |
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#include "rxvt.h" /* NECESSARY */ |
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|
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#ifdef XPM_BACKGROUND |
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|
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static void rxvt_pixmap_incr (unsigned int *wh, unsigned int *xy, float *incr, float *p, unsigned int widthheight, unsigned int xpmwidthheight); |
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|
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/* |
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* These GEOM strings indicate absolute size/position: |
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* @ `WxH+X+Y' |
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* @ `WxH+X' -> Y = X |
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* @ `WxH' -> Y = X = 50 |
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* @ `W+X+Y' -> H = W |
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* @ `W+X' -> H = W, Y = X |
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* @ `W' -> H = W, X = Y = 50 |
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* @ `0xH' -> H *= H/100, X = Y = 50 (W unchanged) |
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* @ `Wx0' -> W *= W/100, X = Y = 50 (H unchanged) |
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* @ `=+X+Y' -> (H, W unchanged) |
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* @ `=+X' -> Y = X (H, W unchanged) |
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* |
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* These GEOM strings adjust position relative to current position: |
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* @ `+X+Y' |
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* @ `+X' -> Y = X |
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* |
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* And this GEOM string is for querying current scale/position: |
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* @ `?' |
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*/ |
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int |
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rxvt_term::scale_pixmap (const char *geom) |
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{ |
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int flags, changed = 0; |
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int x = 0, y = 0; |
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unsigned int w = 0, h = 0; |
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unsigned int n; |
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char *p; |
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bgPixmap_t *bgpixmap = & (bgPixmap); |
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|
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#define MAXLEN_GEOM sizeof("[10000x10000+10000+10000]") |
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|
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if (geom == NULL) |
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return 0; |
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|
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char str[MAXLEN_GEOM]; |
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|
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if (!strcmp (geom, "?")) |
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{ |
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sprintf (str, "[%dx%d+%d+%d]", /* can't presume snprintf () ! */ |
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min (bgpixmap->w, 32767), min (bgpixmap->h, 32767), |
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min (bgpixmap->x, 32767), min (bgpixmap->y, 32767)); |
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process_xterm_seq (XTerm_title, str, CHAR_ST); |
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return 0; |
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} |
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|
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if ((p = strchr (geom, ';')) == NULL) |
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p = strchr (geom, '\0'); |
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|
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n = (p - geom); |
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if (n <= MAXLEN_GEOM) |
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{ |
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strncpy (str, geom, n); |
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str[n] = '\0'; |
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|
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flags = XParseGeometry (str, &x, &y, &w, &h); |
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|
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if (!flags) |
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{ |
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flags |= WidthValue; |
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w = 0; |
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} /* default is tile */ |
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|
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if (flags & WidthValue) |
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{ |
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if (!(flags & XValue)) |
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x = 50; |
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|
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if (!(flags & HeightValue)) |
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h = w; |
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|
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if (w && !h) |
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{ |
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w = (bgpixmap->w * w) / 100; |
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h = bgpixmap->h; |
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} |
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else if (h && !w) |
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{ |
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w = bgpixmap->w; |
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h = (bgpixmap->h * h) / 100; |
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} |
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|
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min_it (w, 32767); |
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min_it (h, 32767); |
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|
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if (bgpixmap->w != (short)w) |
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{ |
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bgpixmap->w = (short)w; |
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changed++; |
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} |
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|
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if (bgpixmap->h != (short)h) |
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{ |
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bgpixmap->h = (short)h; |
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changed++; |
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} |
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} |
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|
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if (!(flags & YValue)) |
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{ |
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if (flags & XNegative) |
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flags |= YNegative; |
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|
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y = x; |
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} |
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|
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if (!(flags & WidthValue) && geom[0] != '=') |
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{ |
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x += bgpixmap->x; |
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y += bgpixmap->y; |
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} |
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|
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if (xpmAttr.width && xpmAttr.height) |
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{ |
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x = MOD(x, xpmAttr.width); |
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y = MOD(y, xpmAttr.height); |
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} |
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|
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if (bgpixmap->x != x) |
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{ |
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bgpixmap->x = x; |
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changed++; |
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} |
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|
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if (bgpixmap->y != y) |
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{ |
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bgpixmap->y = y; |
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changed++; |
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} |
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} |
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|
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return changed; |
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} |
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|
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void |
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rxvt_term::resize_pixmap () |
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{ |
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XGCValues gcvalue; |
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GC gc; |
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|
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if (pixmap != None) |
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XFreePixmap (xdisp, pixmap); |
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|
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if (bgPixmap.pixmap == None) |
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{ /* So be it: I'm not using pixmaps */ |
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pixmap = None; |
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|
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if (!OPTION (Opt_transparent) || !am_transparent) |
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XSetWindowBackground (xdisp, vt, pix_colors[Color_bg]); |
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|
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return; |
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} |
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|
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gcvalue.foreground = pix_colors[Color_bg]; |
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gc = XCreateGC (xdisp, vt, GCForeground, &gcvalue); |
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|
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if (bgPixmap.pixmap != None) |
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{ /* we have a specified pixmap */ |
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unsigned int w = bgPixmap.w, h = bgPixmap.h, |
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x = bgPixmap.x, y = bgPixmap.y; |
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unsigned int xpmh = xpmAttr.height, |
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xpmw = xpmAttr.width; |
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|
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/* |
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* don't zoom pixmap too much nor expand really small pixmaps |
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*/ |
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if (w > 32767 || h > 32767) |
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w = 1; |
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else if (width > (10 * xpmw) |
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|| height > (10 * xpmh)) |
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w = 0; /* tile */ |
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|
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if (!w) |
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{ |
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/* basic X tiling - let the X server do it */ |
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pixmap = XCreatePixmap (xdisp, vt, xpmw, xpmh, depth); |
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|
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XCopyArea (xdisp, bgPixmap.pixmap, pixmap, gc, x, y, xpmw - x, xpmh - y, 0, 0); |
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XCopyArea (xdisp, bgPixmap.pixmap, pixmap, gc, x, 0, xpmw - x, y, 0, xpmh - y); |
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XCopyArea (xdisp, bgPixmap.pixmap, pixmap, gc, 0, y, x, xpmh - y, xpmw - x, 0); |
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XCopyArea (xdisp, bgPixmap.pixmap, pixmap, gc, 0, 0, x, y, xpmw - x, xpmh - y); |
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} |
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else |
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{ |
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float incr, p; |
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Pixmap tmp; |
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|
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pixmap = XCreatePixmap (xdisp, vt, width, height, depth); |
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/* |
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* horizontal scaling |
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*/ |
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rxvt_pixmap_incr (&w, &x, &incr, &p, width, xpmw); |
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|
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tmp = XCreatePixmap (xdisp, vt, width, xpmh, depth); |
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XFillRectangle (xdisp, tmp, gc, 0, 0, width, xpmh); |
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|
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for ( /*nil */ ; x < w; x++, p += incr) |
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{ |
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if (p >= xpmw) |
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p = 0; |
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|
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/* copy one column from the original pixmap to the tmp pixmap */ |
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XCopyArea (xdisp, bgPixmap.pixmap, tmp, gc, (int)p, 0, 1, xpmh, (int)x, 0); |
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} |
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|
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/* |
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* vertical scaling |
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*/ |
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rxvt_pixmap_incr (&h, &y, &incr, &p, height, xpmh); |
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|
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if (y > 0) |
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XFillRectangle (xdisp, pixmap, gc, 0, 0, width, y); |
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|
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if (h < height) |
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XFillRectangle (xdisp, pixmap, gc, 0, (int)h, width, height - h + 1); |
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|
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for ( /*nil */ ; y < h; y++, p += incr) |
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{ |
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if (p >= xpmh) |
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p = 0; |
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|
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/* copy one row from the tmp pixmap to the main pixmap */ |
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XCopyArea (xdisp, tmp, pixmap, gc, 0, (int)p, width, 1, 0, (int)y); |
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} |
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|
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XFreePixmap (xdisp, tmp); |
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} |
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} |
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|
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XSetWindowBackgroundPixmap (xdisp, vt, pixmap); |
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|
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if (pixmap != None) |
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{ |
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XFreePixmap (xdisp, pixmap); |
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pixmap = None; |
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} |
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|
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XFreeGC (xdisp, gc); |
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am_transparent = 0; |
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} |
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|
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/* |
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* Calculate tiling sizes and increments |
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* At start, p == 0, incr == xpmwidthheight |
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*/ |
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static void |
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rxvt_pixmap_incr (unsigned int *wh, unsigned int *xy, float *incr, float *p, unsigned int widthheight, unsigned int xpmwidthheight) |
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{ |
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unsigned int cwh, cxy; |
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float cincr, cp; |
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|
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cp = 0; |
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cincr = (float)xpmwidthheight; |
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cxy = *xy; |
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cwh = *wh; |
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if (cwh == 1) |
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{ /* display one image, no horizontal/vertical scaling */ |
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cincr = (float)widthheight; |
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if (xpmwidthheight <= widthheight) |
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{ |
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cwh = xpmwidthheight; |
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cxy = (cxy * (widthheight - cwh)) / 100; /* beware! order */ |
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cwh += cxy; |
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} |
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else |
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{ |
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cxy = 0; |
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cwh = widthheight; |
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} |
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} |
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else if (cwh < 10) |
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{ /* fit WH images across/down screen */ |
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cincr *= cwh; |
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cxy = 0; |
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cwh = widthheight; |
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} |
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else |
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{ |
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cincr *= 100.0 / cwh; |
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if (cwh < 100) |
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{ /* contract */ |
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float pos; |
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|
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cwh = (cwh * widthheight) / 100; |
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pos = (float)cxy / 100 * widthheight - (cwh / 2); |
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|
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cxy = (widthheight - cwh); |
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if (pos <= 0) |
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cxy = 0; |
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else if (pos < cxy) |
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cxy = (int) pos; |
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cwh += cxy; |
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} |
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else |
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{ /* expand */ |
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if (cxy > 0) |
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{ /* position */ |
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float pos; |
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|
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pos = (float)cxy / 100 * xpmwidthheight - (cincr / 2); |
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cp = xpmwidthheight - cincr; |
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if (pos <= 0) |
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cp = 0; |
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else if (pos < cp) |
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cp = pos; |
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} |
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cxy = 0; |
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cwh = widthheight; |
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} |
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} |
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cincr /= widthheight; |
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*wh = cwh; |
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*xy = cxy; |
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*incr = cincr; |
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*p = cp; |
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} |
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|
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Pixmap |
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rxvt_term::set_bgPixmap (const char *file) |
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{ |
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char *f; |
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|
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assert (file != NULL); |
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|
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if (bgPixmap.pixmap != None) |
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{ |
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XFreePixmap (xdisp, bgPixmap.pixmap); |
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bgPixmap.pixmap = None; |
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} |
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|
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XSetWindowBackground (xdisp, vt, pix_colors[Color_bg]); |
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|
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if (*file != '\0') |
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{ |
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/* XWindowAttributes attr; */ |
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|
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/* |
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* we already have the required attributes |
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*/ |
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/* XGetWindowAttributes (xdisp, vt, &attr); */ |
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|
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xpmAttr.closeness = 30000; |
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xpmAttr.colormap = cmap; |
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xpmAttr.visual = visual; |
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xpmAttr.depth = depth; |
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xpmAttr.valuemask = (XpmCloseness | XpmColormap | XpmVisual |
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| XpmDepth | XpmSize | XpmReturnPixels); |
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|
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/* search environment variables here too */ |
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f = (char *)rxvt_File_find (file, ".xpm", rs[Rs_path]); |
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if (f == NULL |
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|| XpmReadFileToPixmap (xdisp, display->root, f, |
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&bgPixmap.pixmap, NULL, |
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&xpmAttr)) |
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{ |
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char *p; |
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|
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/* semi-colon delimited */ |
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if ((p = strchr (file, ';')) == NULL) |
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p = strchr (file, '\0'); |
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|
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rxvt_warn ("couldn't load XPM file \"%.*s\", ignoring.\n", (p - file), file); |
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} |
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|
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free (f); |
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} |
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|
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resize_pixmap (); |
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return bgPixmap.pixmap; |
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} |
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|
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#endif /* XPM_BACKGROUND */ |
