FLTK 1.3.8

Fl_Cairo.H
1//
2// "$Id$"
3//
4// Main header file for the Fast Light Tool Kit (FLTK).
5//
6// Copyright 1998-2010 by Bill Spitzak and others.
7//
8// This library is free software. Distribution and use rights are outlined in
9// the file "COPYING" which should have been included with this file. If this
10// file is missing or damaged, see the license at:
11//
12// http://www.fltk.org/COPYING.php
13//
14// Please report all bugs and problems on the following page:
15//
16// http://www.fltk.org/str.php
17//
18
19/* \file
20 Handling transparently platform dependent cairo include files
21*/
22
23#ifndef FL_CAIRO_H
24# define FL_CAIRO_H
25# ifdef FLTK_HAVE_CAIRO
26
27// Cairo is currently supported for the following platforms:
28// Win32, Apple Quartz, X11
29
30# include <FL/Fl_Export.H>
31
32# include <cairo.h>
33
46 class FL_EXPORT Fl_Cairo_State {
47 public:
48 Fl_Cairo_State() : cc_(0), own_cc_(false), autolink_(false), window_(0), gc_(0) {}
49
50 // access attributes
51 cairo_t* cc() const {return cc_;}
52 bool autolink() const {return autolink_;}
61 void cc(cairo_t* c, bool own=true) {
62 if (cc_ && own_cc_) cairo_destroy(cc_);
63 cc_=c;
64 if (!cc_) window_=0;
65 own_cc_=own;
66 }
67 void autolink(bool b);
68 void window(void* w) {window_=w;}
69 void* window() const {return window_;}
70 void gc(void* c) {gc_=c;}
71 void* gc() const {return gc_;}
72
73 private:
74 cairo_t * cc_; // contains the unique autoupdated cairo context
75 bool own_cc_; // indicates whether we must delete the cc, useful for internal cleanup
76 bool autolink_; // false by default, prevents the automatic cairo mapping on fltk windows
77 // for custom cairo implementations.
78 void* window_, *gc_; // for keeping track internally of last win+gc treated
79};
80
83# endif // FLTK_HAVE_CAIRO
84#endif // FL_CAIRO_H
85
86//
87// End of "$Id$" .
88//
Fl_Cairo_State
Contains all the necessary info on the current cairo context.
Definition: Fl_Cairo.H:46
Fl_Cairo_State::window
void window(void *w)
Sets the window w to keep track on.
Definition: Fl_Cairo.H:68
Fl_Cairo_State::cc
void cc(cairo_t *c, bool own=true)
Sets the current cairo context.
Definition: Fl_Cairo.H:61
Fl_Cairo_State::gc
void * gc() const
Gets the last gc attached to a cc.
Definition: Fl_Cairo.H:71
Fl_Cairo_State::window
void * window() const
Gets the last window attached to a cc.
Definition: Fl_Cairo.H:69
Fl_Cairo_State::gc
void gc(void *c)
Sets the gc c to keep track on.
Definition: Fl_Cairo.H:70
Fl_Cairo_State::cc
cairo_t * cc() const
Gets the current cairo context.
Definition: Fl_Cairo.H:51
Fl_Cairo_State::autolink
bool autolink() const
Gets the autolink option. See Fl::cairo_autolink_context(bool)
Definition: Fl_Cairo.H:52
- Copyright © 1998-2021 by Bill Spitzak and others.