mirror of https://github.com/fltk/fltk
48 lines
1.5 KiB
C++
48 lines
1.5 KiB
C++
//
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// PNG image header file for the Fast Light Tool Kit (FLTK).
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//
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// Copyright 1998-2023 by Bill Spitzak and others.
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//
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// This library is free software. Distribution and use rights are outlined in
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// the file "COPYING" which should have been included with this file. If this
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// file is missing or damaged, see the license at:
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//
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// https://www.fltk.org/COPYING.php
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//
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// Please see the following page on how to report bugs and issues:
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//
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// https://www.fltk.org/bugs.php
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//
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/* \file
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Fl_PNG_Image class . */
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#ifndef Fl_PNG_Image_H
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#define Fl_PNG_Image_H
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# include "Fl_Image.H"
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/**
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The Fl_PNG_Image class supports loading, caching,
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and drawing of Portable Network Graphics (PNG) image files. The
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class loads color-mapped and full-color images and handles color-
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and alpha-based transparency.
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*/
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class FL_EXPORT Fl_PNG_Image : public Fl_RGB_Image {
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friend class Fl_ICO_Image;
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public:
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Fl_PNG_Image(const char* filename);
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Fl_PNG_Image (const char *name_png, const unsigned char *buffer, int datasize);
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private:
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Fl_PNG_Image(const char *filename, int offset); // used by Fl_ICO_Image
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void load_png_(const char *name_png, int offset, const unsigned char *buffer_png, int datasize);
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};
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// Support functions to write PNG image files (since 1.4.0)
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FL_EXPORT int fl_write_png(const char *filename, Fl_RGB_Image *img);
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FL_EXPORT int fl_write_png(const char *filename, const char *pixels, int w, int h, int d=3, int ld=0);
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FL_EXPORT int fl_write_png(const char *filename, const unsigned char *pixels, int w, int h, int d=3, int ld=0);
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#endif
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