bc509d32eb
by FLTK_USE_CAIRO everywhere. git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@8198 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
93 lines
2.8 KiB
C++
93 lines
2.8 KiB
C++
//
|
|
// "$Id$"
|
|
//
|
|
// Main header file for the Fast Light Tool Kit (FLTK).
|
|
//
|
|
// Copyright 1998-2010 by Bill Spitzak and others.
|
|
//
|
|
// This library is free software; you can redistribute it and/or
|
|
// modify it under the terms of the GNU Library General Public
|
|
// License as published by the Free Software Foundation; either
|
|
// version 2 of the License, or (at your option) any later version.
|
|
//
|
|
// This library 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
|
|
// Library General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Library General Public
|
|
// License along with this library; if not, write to the Free Software
|
|
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
|
|
// USA.
|
|
//
|
|
// Please report all bugs and problems on the following page:
|
|
//
|
|
// http://www.fltk.org/str.php
|
|
//
|
|
|
|
/* \file
|
|
Fl_Cairo_Window Handling transparently a fltk window incorporte a cairo draw callback.
|
|
*/
|
|
|
|
#ifndef FL_CAIRO_WINDOW_H
|
|
# define FL_CAIRO_WINDOW_H
|
|
# ifdef FLTK_HAVE_CAIRO
|
|
|
|
// Cairo is currently supported for the following platforms:
|
|
// Win32, Apple Quartz, X11
|
|
# include <FL/Fl.H>
|
|
# include <FL/Fl_Double_Window.H>
|
|
|
|
/**
|
|
\addtogroup group_cairo
|
|
@{
|
|
*/
|
|
|
|
/**
|
|
This defines a pre-configured cairo fltk window.
|
|
This class overloads the virtual draw() method for you,
|
|
so that the only thing you have to do is to provide your cairo code.
|
|
All cairo context handling is achieved transparently.
|
|
\note You can alternatively define your custom cairo fltk window,
|
|
and thus at least override the draw() method to provide custom cairo
|
|
support. In this case you will probably use Fl::cairo_make_current(Fl_Window*)
|
|
to attach a context to your window. You should do it only when your window is
|
|
the current window. \see Fl_Window::current()
|
|
*/
|
|
class FL_EXPORT Fl_Cairo_Window : public Fl_Double_Window {
|
|
|
|
public:
|
|
Fl_Cairo_Window(int w, int h) : Fl_Double_Window(w,h),draw_cb_(0) {}
|
|
|
|
protected:
|
|
/** Overloaded to provide cairo callback support */
|
|
void draw() {
|
|
Fl_Double_Window::draw();
|
|
// manual method ? if yes explicitly get a cairo_context here
|
|
if (!Fl::cairo_autolink_context())
|
|
Fl::cairo_make_current(this);
|
|
if (draw_cb_) draw_cb_(this, Fl::cairo_cc());
|
|
}
|
|
|
|
public:
|
|
/** This defines the cairo draw callback prototype that you must further */
|
|
typedef void (*cairo_draw_cb) (Fl_Cairo_Window* self, cairo_t* def);
|
|
/**
|
|
You must provide a draw callback which will implement your cairo rendering.
|
|
This method will permit you to set your cairo callback to \p cb.
|
|
*/
|
|
void set_draw_cb(cairo_draw_cb cb){draw_cb_=cb;}
|
|
private:
|
|
cairo_draw_cb draw_cb_;
|
|
};
|
|
|
|
|
|
/** @} */
|
|
|
|
# endif // FLTK_HAVE_CAIRO
|
|
#endif // FL_CAIRO_WINDOW_H
|
|
|
|
//
|
|
// End of "$Id$" .
|
|
//
|