mirror of https://github.com/fltk/fltk
98 lines
3.2 KiB
C++
98 lines
3.2 KiB
C++
//
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// "$Id$"
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//
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// Main header file for the Fast Light Tool Kit (FLTK).
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//
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// Copyright 1998-2009 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 on the following page:
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//
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// http://www.fltk.org/str.php
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//
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/* \file
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Handling transparently platform dependent cairo include files
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*/
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#ifndef FL_CAIRO_H
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# define FL_CAIRO_H
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# ifdef HAVE_CAIRO
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// Cairo is currently supported for the following platforms:
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// Win32, Apple Quartz, X11
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# include <FL/Fl_Export.H>
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# if defined(USE_X11) // X11
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# include <cairo-xlib.h>
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# elif defined(WIN32)
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# include <cairo-win32.h>
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# elif defined(__APPLE_QUARTZ__)
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# include <cairo-quartz.h>
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# else
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# error Cairo is not supported on that platform.
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# endif
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/**
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\addtogroup group_cairo
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@{
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*/
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/**
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Contains all the necessary info on the current cairo context.
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A private internal & unique corresponding object is created to
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permit cairo context state handling while keeping it opaque.
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For internal use only.
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\note Only available when configure has the --enable-cairo option
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*/
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class FL_EXPORT Fl_Cairo_State {
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public:
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Fl_Cairo_State() : cc_(0), own_cc_(false), autolink_(false), window_(0), gc_(0) {}
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// access attributes
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cairo_t* cc() const {return cc_;} ///< Gets the current cairo context
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bool autolink() const {return autolink_;} ///< Gets the autolink option. See Fl::cairo_autolink_context(bool)
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/** Sets the current cairo context, \a own indicates cc deletion is handle externally by user */
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void cc(cairo_t* c, bool own=true) {
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if (cc_ && own_cc_) cairo_destroy(cc_);
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cc_=c;
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if (!cc_) window_=0;
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own_cc_=own;
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}
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void autolink(bool b); ///< Sets the autolink option, only available with --enable-cairoext
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void window(void* w) {window_=w;} ///< Sets the window \a w to keep track on
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void* window() const {return window_;} ///< Gets the last window attached to a cc
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void gc(void* c) {gc_=c;} ///< Sets the gc \a c to keep track on
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void* gc() const {return gc_;} ///< Gets the last gc attached to a cc
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private:
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cairo_t * cc_; // contains the unique autoupdated cairo context
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bool own_cc_; // indicates whether we must delete the cc, useful for internal cleanup
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bool autolink_; // true by default, permits to prevent the automatic cairo mapping on fltk windows for custom cairo implementations
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void* window_, *gc_; // for keeping track internally of last win+gc treated
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};
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/** @} */
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# endif // HAVE_CAIRO
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#endif // FL_CAIRO_H
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//
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// End of "$Id$" .
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//
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