From e0c6872cf40896c7be36b11dcc744620f10adf1d Mon Sep 17 00:00:00 2001 From: Norbert Preining Date: Mon, 2 Sep 2019 13:46:59 +0900 Subject: Initial commit --- graphics/epix/active_screen.h | 72 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 graphics/epix/active_screen.h (limited to 'graphics/epix/active_screen.h') diff --git a/graphics/epix/active_screen.h b/graphics/epix/active_screen.h new file mode 100644 index 0000000000..79bb909063 --- /dev/null +++ b/graphics/epix/active_screen.h @@ -0,0 +1,72 @@ +/* + * active_screen.h -- ePiX screen_broker class + * + * This file is part of ePiX, a C++ library for creating high-quality + * figures in LaTeX + * + * Version 1.1.11 + * Last Change: August 15, 2007 + */ + +/* + * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007 + * Andrew D. Hwang + * Department of Mathematics and Computer Science + * College of the Holy Cross + * Worcester, MA, 01610-2395, USA + */ + +/* + * ePiX 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 2 of the License, or + * (at your option) any later version. + * + * ePiX 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 ePiX; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +/* + * A screen_broker is a simple stack of screen*, permitting client code + * to activate a screen then restore the state later. No attempt is made + * to handle concurrent threads, but the global "deactivate" function + * in picture.h prints a warning if its argument is not active. + */ +#ifndef EPIX_ACTIVE_SCREEN +#define EPIX_ACTIVE_SCREEN + +#include + +namespace ePiX { + + class screen; + + class screen_broker { + public: + screen_broker(); + + // no need for destructor; we don't manage resources + + screen* active() const; + void push(screen&); + screen* pop(); + + private: + std::list m_screens; + + // forbid copying + screen_broker(const screen_broker&); + screen_broker& operator= (const screen_broker&); + }; + + screen_broker& the_screen_stack(); + screen* active_screen(); +} // end of namespace + +#endif /* EPIX_ACTIVE_SCREEN */ -- cgit v1.2.3