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/* SLiM - Simple Login Manager
Copyright (C) 2004-06 Simone Rota <sip@varlock.com>
Copyright (C) 2004-06 Johannes Winkelmann <jw@tks6.net>
Copyright (C) 2012 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
The following code has been adapted and extended from
xplanet 1.0.1, Copyright (C) 2002-04 Hari Nair <hari@alumni.caltech.edu>
*/
#ifndef _IMAGE_H_
#define _IMAGE_H_
#include <X11/Xlib.h>
#include <X11/Xmu/WinUtil.h>
class Image
{
public:
Image();
Image(const int w, const int h, const unsigned char *rgb,
const unsigned char *alpha);
~Image();
const unsigned char *getPNGAlpha() const {
return(png_alpha);
}
const unsigned char *getRGBData() const {
return(rgb_data);
}
void getPixel(double px, double py, unsigned char *pixel);
void getPixel(double px, double py, unsigned char *pixel,
unsigned char *alpha);
int Width() const {
return(width);
}
int Height() const {
return(height);
}
bool Read(const char *filename);
void Reduce(const int factor);
void Resize(const int w, const int h);
void Merge ( const Image *background, const int x, const int y );
void Merge_non_crop(Image* background, const int x, const int y);
void Crop(const int x, const int y, const int w, const int h);
void Tile(const int w, const int h);
void Center(const int w, const int h, const char *hex);
void Plain(const int w, const int h, const char *hex);
void computeShift(unsigned long mask, unsigned char &left_shift,
unsigned char &right_shift);
Pixmap createPixmap(Display *dpy, int scr, Window win);
private:
int width, height, area;
unsigned char *rgb_data;
unsigned char *png_alpha;
int readJpeg(const char *filename, int *width, int *height,
unsigned char **rgb);
int readPng(const char *filename, int *width, int *height,
unsigned char **rgb, unsigned char **alpha);
};
#endif /* _IMAGE_H_ */
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