fl_menu_window.cxx

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//
// "$Id: Fl_Menu_Window.cxx,v 1.1.1.1 2003/08/07 21:18:40 jasonk Exp $"
//
// Menu window code for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-1999 by Bill Spitzak and others.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library 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
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA.
//
// Please report all bugs and problems to "[e-mail]".
//

// This is the window type used by Fl_Menu to make the pop-ups.
// It draws in the overlay planes if possible.

// Also here is the implementation of the mouse & keyboard grab,
// which are used so that clicks outside the program's windows
// can be used to dismiss the menus.

#include <config.h>
#include <FL/Fl.H>
#include <FL/x.H>
#include <FL/fl_draw.H>
#include <FL/Fl_Menu_Window.H>

// WIN32 note: HAVE_OVERLAY is false
#if HAVE_OVERLAY
extern XVisualInfo *fl_find_overlay_visual();
extern XVisualInfo *fl_overlay_visual;
extern Colormap fl_overlay_colormap;
extern unsigned long fl_transparent_pixel;
static GC gc;			// the GC used by all X windows
extern uchar fl_overlay;	// changes how fl_color(x) works
#endif

#include <stdio.h>

void
Fl_Menu_Window::show()
{

#if HAVE_OVERLAY
    if (!shown() && overlay() && fl_find_overlay_visual()) {
	XInstallColormap(fl_display, fl_overlay_colormap);
	fl_background_pixel = int (fl_transparent_pixel);
	Fl_X::make_xid(this, fl_overlay_visual, fl_overlay_colormap);
	fl_background_pixel = -1;
    } else
#endif
#ifdef NANOX
	Fl_X::mw_parent = 0;
#endif
    Fl_Single_Window::show();
}

void
Fl_Menu_Window::flush()
{
#if HAVE_OVERLAY
    if (!fl_overlay_visual || !overlay()) {
	Fl_Single_Window::flush();
	return;
    }
    Fl_X *i = Fl_X::i(this);
    fl_window = i->xid;
    if (!gc)
	gc = XCreateGC(fl_display, i->xid, 0, 0);
    fl_gc = gc;
    fl_overlay = 1;
    fl_clip_region(i->region);
    i->region = 0;
    draw();
    fl_overlay = 0;
#else
    Fl_Single_Window::flush();
#endif
}

void
Fl_Menu_Window::erase()
{
#if HAVE_OVERLAY
    if (!gc || !shown())
	return;
//XSetForeground(fl_display, gc, 0);
//XFillRectangle(fl_display, fl_xid(this), gc, 0, 0, w(), h());
    XClearWindow(fl_display, fl_xid(this));
#endif
}

// Fix the colormap flashing on Maximum Impact Graphics by erasing the
// menu before unmapping it:
void
Fl_Menu_Window::hide()
{
    erase();
    Fl_Single_Window::hide();
}

Fl_Menu_Window::~Fl_Menu_Window()
{
    hide();
}

//
// End of "$Id: Fl_Menu_Window.cxx,v 1.1.1.1 2003/08/07 21:18:40 jasonk Exp $".
//