FLTK 1.3.0
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00001 // 00002 // "$Id$" 00003 // 00004 // Main header file for the Fast Light Tool Kit (FLTK). 00005 // 00006 // Copyright 1998-2010 by Bill Spitzak and others. 00007 // 00008 // This library is free software; you can redistribute it and/or 00009 // modify it under the terms of the GNU Library General Public 00010 // License as published by the Free Software Foundation; either 00011 // version 2 of the License, or (at your option) any later version. 00012 // 00013 // This library is distributed in the hope that it will be useful, 00014 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00015 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00016 // Library General Public License for more details. 00017 // 00018 // You should have received a copy of the GNU Library General Public 00019 // License along with this library; if not, write to the Free Software 00020 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 00021 // USA. 00022 // 00023 // Please report all bugs and problems on the following page: 00024 // 00025 // http://www.fltk.org/str.php 00026 // 00027 00028 /* \file 00029 Handling transparently platform dependent cairo include files 00030 */ 00031 00032 #ifndef FL_CAIRO_H 00033 # define FL_CAIRO_H 00034 # ifdef FLTK_HAVE_CAIRO 00035 00036 // Cairo is currently supported for the following platforms: 00037 // Win32, Apple Quartz, X11 00038 00039 # include <FL/Fl_Export.H> 00040 00041 # if defined(USE_X11) // X11 00042 # include <cairo-xlib.h> 00043 # elif defined(WIN32) 00044 # include <cairo-win32.h> 00045 # elif defined(__APPLE_QUARTZ__) 00046 # include <cairo-quartz.h> 00047 # else 00048 # error Cairo is not supported on that platform. 00049 # endif 00050 00063 class FL_EXPORT Fl_Cairo_State { 00064 public: 00065 Fl_Cairo_State() : cc_(0), own_cc_(false), autolink_(false), window_(0), gc_(0) {} 00066 00067 // access attributes 00068 cairo_t* cc() const {return cc_;} 00069 bool autolink() const {return autolink_;} 00070 00071 void cc(cairo_t* c, bool own=true) { 00072 if (cc_ && own_cc_) cairo_destroy(cc_); 00073 cc_=c; 00074 if (!cc_) window_=0; 00075 own_cc_=own; 00076 } 00077 void autolink(bool b); 00078 void window(void* w) {window_=w;} 00079 void* window() const {return window_;} 00080 void gc(void* c) {gc_=c;} 00081 void* gc() const {return gc_;} 00082 00083 private: 00084 cairo_t * cc_; // contains the unique autoupdated cairo context 00085 bool own_cc_; // indicates whether we must delete the cc, useful for internal cleanup 00086 bool autolink_; // true by default, permits to prevent the automatic cairo mapping on fltk windows for custom cairo implementations 00087 void* window_, *gc_; // for keeping track internally of last win+gc treated 00088 }; 00089 00092 # endif // FLTK_HAVE_CAIRO 00093 #endif // FL_CAIRO_H 00094 00095 // 00096 // End of "$Id$" . 00097 //