f09e17c3c5
- remove obsolete svn '$Id$' tags from all source files - update .fl files and generated files accordingly - replace 'http://www.fltk.org' URL's with 'https://...' - replace bug report URL 'str.php' with 'bugs.php' - remove trailing whitespace - fix other whitespace errors flagged by Git - add and/or fix missing or wrong standard headers - convert tabs to spaces in all source files The only relevant code changes are in the fluid/ folder where some .fl files and other source files were used to generate the '$Id' headers and footers.
83 lines
2.8 KiB
C++
83 lines
2.8 KiB
C++
//
|
|
// Main header file for the Fast Light Tool Kit (FLTK).
|
|
//
|
|
// Copyright 1998-2016 by Bill Spitzak and others.
|
|
//
|
|
// This library is free software. Distribution and use rights are outlined in
|
|
// the file "COPYING" which should have been included with this file. If this
|
|
// file is missing or damaged, see the license at:
|
|
//
|
|
// https://www.fltk.org/COPYING.php
|
|
//
|
|
// Please see the following page on how to report bugs and issues:
|
|
//
|
|
// https://www.fltk.org/bugs.php
|
|
//
|
|
|
|
/* \file
|
|
Handling transparently platform dependent cairo include files
|
|
*/
|
|
|
|
#ifndef FL_CAIRO_H
|
|
# define FL_CAIRO_H
|
|
# ifdef FLTK_HAVE_CAIRO
|
|
|
|
// Cairo is currently supported for the following platforms:
|
|
// Win32, Apple Quartz, X11
|
|
|
|
# include <FL/Fl_Export.H>
|
|
|
|
# include <cairo.h>
|
|
|
|
/**
|
|
\addtogroup group_cairo
|
|
@{
|
|
*/
|
|
|
|
/**
|
|
Contains all the necessary info on the current cairo context.
|
|
A private internal & unique corresponding object is created to
|
|
permit cairo context state handling while keeping it opaque.
|
|
For internal use only.
|
|
\note Only available when configure has the --enable-cairo option
|
|
*/
|
|
class FL_EXPORT Fl_Cairo_State {
|
|
public:
|
|
Fl_Cairo_State() : cc_(0), own_cc_(false), autolink_(false), window_(0), gc_(0) {}
|
|
|
|
// access attributes
|
|
cairo_t* cc() const {return cc_;} ///< Gets the current cairo context
|
|
bool autolink() const {return autolink_;} ///< Gets the autolink option. See Fl::cairo_autolink_context(bool)
|
|
/** Sets the current cairo context.
|
|
|
|
\p own == \e true (the default) indicates that the cairo context \p c
|
|
will be deleted by FLTK internally when another cc is set later.
|
|
|
|
\p own == \e false indicates cc deletion is handled externally
|
|
by the user program.
|
|
*/
|
|
void cc(cairo_t* c, bool own=true) {
|
|
if (cc_ && own_cc_) cairo_destroy(cc_);
|
|
cc_=c;
|
|
if (!cc_) window_=0;
|
|
own_cc_=own;
|
|
}
|
|
void autolink(bool b); ///< Sets the autolink option, only available with --enable-cairoext
|
|
void window(void* w) {window_=w;} ///< Sets the window \p w to keep track on
|
|
void* window() const {return window_;} ///< Gets the last window attached to a cc
|
|
void gc(void* c) {gc_=c;} ///< Sets the gc \p c to keep track on
|
|
void* gc() const {return gc_;} ///< Gets the last gc attached to a cc
|
|
|
|
private:
|
|
cairo_t * cc_; // contains the unique autoupdated cairo context
|
|
bool own_cc_; // indicates whether we must delete the cc, useful for internal cleanup
|
|
bool autolink_; // false by default, prevents the automatic cairo mapping on fltk windows
|
|
// for custom cairo implementations.
|
|
void* window_, *gc_; // for keeping track internally of last win+gc treated
|
|
};
|
|
|
|
/** @} */
|
|
|
|
# endif // FLTK_HAVE_CAIRO
|
|
#endif // FL_CAIRO_H
|