2 // "$Id: Fl_Shared_Image.H,v 1.2 2002/12/01 15:38:37 neurosurg Exp $"
4 // Shared image header file for the Fast Light Tool Kit (FLTK).
6 // Copyright 1998-2002 by Bill Spitzak and others.
8 // This library is free software; you can redistribute it and/or
9 // modify it under the terms of the GNU Library General Public
10 // License as published by the Free Software Foundation; either
11 // version 2 of the License, or (at your option) any later version.
13 // This library is distributed in the hope that it will be useful,
14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 // Library General Public License for more details.
18 // You should have received a copy of the GNU Library General Public
19 // License along with this library; if not, write to the Free Software
20 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
23 // Please report all bugs and problems to "fltk-bugs@fltk.org".
26 #ifndef Fl_Shared_Image_H
27 # define Fl_Shared_Image_H
29 # include "Fl_Image.H"
32 // Test function for adding new formats
33 typedef Fl_Image *(*Fl_Shared_Handler)(const char *name, uchar *header,
36 // Shared images class.
37 class FL_EXPORT Fl_Shared_Image : public Fl_Image {
40 static Fl_Shared_Image **images_; // Shared images
41 static int num_images_; // Number of shared images
42 static int alloc_images_; // Allocated shared images
43 static Fl_Shared_Handler *handlers_; // Additional format handlers
44 static int num_handlers_; // Number of format handlers
45 static int alloc_handlers_; // Allocated format handlers
47 const char *name_; // Name of image file
48 int original_; // Original image?
49 int refcount_; // Number of times this image has been used
50 Fl_Image *image_; // The image that is shared
51 int alloc_image_; // Was the image allocated?
53 static int compare(Fl_Shared_Image **i0, Fl_Shared_Image **i1);
55 // Use get() and release() to load/delete images in memory...
57 Fl_Shared_Image(const char *n, Fl_Image *img = 0);
58 virtual ~Fl_Shared_Image();
64 const char *name() { return name_; }
65 int refcount() { return refcount_; }
69 virtual Fl_Image *copy(int W, int H);
70 Fl_Image *copy() { return copy(w(), h()); }
71 virtual void color_average(Fl_Color c, float i);
72 virtual void desaturate();
73 virtual void draw(int X, int Y, int W, int H, int cx, int cy);
74 void draw(int X, int Y) { draw(X, Y, w(), h(), 0, 0); }
75 virtual void uncache();
77 static Fl_Shared_Image *find(const char *n, int W = 0, int H = 0);
78 static Fl_Shared_Image *get(const char *n, int W = 0, int H = 0);
79 static Fl_Shared_Image **images();
80 static int num_images();
81 static void add_handler(Fl_Shared_Handler f);
82 static void remove_handler(Fl_Shared_Handler f);
86 // The following function is provided in the fltk_images library and
87 // registers all of the "extra" image file formats that are not part
88 // of the core FLTK library...
91 FL_EXPORT extern void fl_register_images();
93 #endif // !Fl_Shared_Image_H
96 // End of "$Id: Fl_Shared_Image.H,v 1.2 2002/12/01 15:38:37 neurosurg Exp $"