115 lines
3.8 KiB
C++
115 lines
3.8 KiB
C++
//
|
|
// "$Id: Fl_Shared_Image.H 8306 2011-01-24 17:04:22Z matt $"
|
|
//
|
|
// Shared image 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_Shared_Image class. */
|
|
|
|
#ifndef Fl_Shared_Image_H
|
|
# define Fl_Shared_Image_H
|
|
|
|
# include "Fl_Image.H"
|
|
|
|
|
|
// Test function for adding new formats
|
|
typedef Fl_Image *(*Fl_Shared_Handler)(const char *name, uchar *header,
|
|
int headerlen);
|
|
|
|
// Shared images class.
|
|
/**
|
|
This class supports caching, loading,
|
|
and drawing of image files. Most applications will also want to
|
|
link against the fltk_images library and call the
|
|
fl_register_images()
|
|
function to support standard image formats such as BMP, GIF, JPEG, and PNG.
|
|
*/
|
|
class FL_EXPORT Fl_Shared_Image : public Fl_Image {
|
|
|
|
friend class Fl_JPEG_Image;
|
|
friend class Fl_PNG_Image;
|
|
|
|
protected:
|
|
|
|
static Fl_Shared_Image **images_; // Shared images
|
|
static int num_images_; // Number of shared images
|
|
static int alloc_images_; // Allocated shared images
|
|
static Fl_Shared_Handler *handlers_; // Additional format handlers
|
|
static int num_handlers_; // Number of format handlers
|
|
static int alloc_handlers_; // Allocated format handlers
|
|
|
|
const char *name_; // Name of image file
|
|
int original_; // Original image?
|
|
int refcount_; // Number of times this image has been used
|
|
Fl_Image *image_; // The image that is shared
|
|
int alloc_image_; // Was the image allocated?
|
|
|
|
static int compare(Fl_Shared_Image **i0, Fl_Shared_Image **i1);
|
|
|
|
// Use get() and release() to load/delete images in memory...
|
|
Fl_Shared_Image();
|
|
Fl_Shared_Image(const char *n, Fl_Image *img = 0);
|
|
virtual ~Fl_Shared_Image();
|
|
void add();
|
|
void update();
|
|
|
|
public:
|
|
/** Returns the filename of the shared image */
|
|
const char *name() { return name_; }
|
|
/** Returns the number of references of this shared image. When reference is below 1, the image is deleted. */
|
|
int refcount() { return refcount_; }
|
|
void release();
|
|
void reload();
|
|
|
|
virtual Fl_Image *copy(int W, int H);
|
|
Fl_Image *copy() { return copy(w(), h()); }
|
|
virtual void color_average(Fl_Color c, float i);
|
|
virtual void desaturate();
|
|
virtual void draw(int X, int Y, int W, int H, int cx, int cy);
|
|
void draw(int X, int Y) { draw(X, Y, w(), h(), 0, 0); }
|
|
virtual void uncache();
|
|
|
|
static Fl_Shared_Image *find(const char *n, int W = 0, int H = 0);
|
|
static Fl_Shared_Image *get(const char *n, int W = 0, int H = 0);
|
|
static Fl_Shared_Image **images();
|
|
static int num_images();
|
|
static void add_handler(Fl_Shared_Handler f);
|
|
static void remove_handler(Fl_Shared_Handler f);
|
|
};
|
|
|
|
//
|
|
// The following function is provided in the fltk_images library and
|
|
// registers all of the "extra" image file formats that are not part
|
|
// of the core FLTK library...
|
|
//
|
|
|
|
FL_EXPORT extern void fl_register_images();
|
|
|
|
#endif // !Fl_Shared_Image_H
|
|
|
|
//
|
|
// End of "$Id: Fl_Shared_Image.H 8306 2011-01-24 17:04:22Z matt $"
|
|
//
|