4b561b6e90
Updated the configure script for *BSD and GCC 2.95 (-fno-exceptions) Added install rule to documentation directory. Dumped old packages directory; added traditional RPM spec file and EPM list file (that replace all of the packages stuff) The FLUID man page is now "fluid.1" for the formatted page and "fluid.man" for the non-formatted page, since only IRIX uses pack'd formatted man pages. Whew! git-svn-id: file:///fltk/svn/fltk/branches/branch-1.0@1090 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
112 lines
3.4 KiB
C++
112 lines
3.4 KiB
C++
//
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// "$Id: Fl_visual.cxx,v 1.7.2.2 2000/04/25 22:16:35 mike Exp $"
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//
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// Visual support for the Fast Light Tool Kit (FLTK).
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//
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// Copyright 1998-2000 by Bill Spitzak and others.
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library 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 GNU
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// Library General Public License for more details.
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//
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// You should have received a copy of the GNU Library General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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// USA.
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//
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// Please report all bugs and problems to "fltk-bugs@easysw.com".
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//
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// Set the default visual according to passed switches:
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#include <config.h>
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#include <FL/Fl.H>
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#include <FL/x.H>
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#ifdef WIN32
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int Fl::visual(int flags) {
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fl_GetDC(0);
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if (flags & FL_DOUBLE) return 0;
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if (!(flags & FL_INDEX) &&
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GetDeviceCaps(fl_gc,BITSPIXEL) <= 8) return 0;
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if ((flags & FL_RGB8) && GetDeviceCaps(fl_gc,BITSPIXEL)<24) return 0;
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return 1;
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}
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#else
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#if USE_XDBE
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#include <X11/extensions/Xdbe.h>
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#endif
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static int test_visual(XVisualInfo& v, int flags) {
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if (v.screen != fl_screen) return 0;
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#if USE_COLORMAP
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if (!(flags & FL_INDEX)) {
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if (v.c_class != StaticColor && v.c_class != TrueColor) return 0;
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if (v.depth <= 8) return 0; // fltk will work better in colormap mode
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}
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if (flags & FL_RGB8) {
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if (v.depth < 24) return 0;
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}
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// for now, fltk does not like colormaps of more than 8 bits:
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if ((v.c_class&1) && v.depth > 8) return 0;
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#else
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// simpler if we can't use colormapped visuals at all:
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if (v.c_class != StaticColor && v.c_class != TrueColor) return 0;
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#endif
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#if USE_XDBE
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if (flags & FL_DOUBLE) {
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static XdbeScreenVisualInfo *xdbejunk;
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if (!xdbejunk) {
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int event_base, error_base;
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if (!XdbeQueryExtension(fl_display, &event_base, &error_base)) return 0;
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Drawable root = RootWindow(fl_display,fl_screen);
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int numscreens = 1;
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xdbejunk = XdbeGetVisualInfo(fl_display,&root,&numscreens);
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if (!xdbejunk) return 0;
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}
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for (int j = 0; ; j++) {
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if (j >= xdbejunk->count) return 0;
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if (xdbejunk->visinfo[j].visual == v.visualid) break;
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}
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}
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#endif
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return 1;
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}
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int Fl::visual(int flags) {
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#if USE_XDBE == 0
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if (flags & FL_DOUBLE) return 0;
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#endif
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fl_open_display();
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// always use default if possible:
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if (test_visual(*fl_visual, flags)) return 1;
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// get all the visuals:
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XVisualInfo vTemplate;
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int num;
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XVisualInfo *visualList = XGetVisualInfo(fl_display, 0, &vTemplate, &num);
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// find all matches, use the one with greatest depth:
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XVisualInfo *found = 0;
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for (int i=0; i<num; i++) if (test_visual(visualList[i], flags)) {
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if (!found || found->depth < visualList[i].depth)
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found = &visualList[i];
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}
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if (!found) {XFree((void*)visualList); return 0;}
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fl_visual = found;
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fl_colormap = XCreateColormap(fl_display, RootWindow(fl_display,fl_screen),
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fl_visual->visual, AllocNone);
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return 1;
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}
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#endif
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//
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// End of "$Id: Fl_visual.cxx,v 1.7.2.2 2000/04/25 22:16:35 mike Exp $".
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//
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