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/**
* @module CPixmap
* @author Guenther Neuwirth (0626638), Manuel Mausz (0728348)
* @brief Implementation of CFile CBitmap handling XPM.
* @date 27.04.2009
*/
#ifndef CPixmap_H
#define CPixmap_H
#include <stdint.h>
#include "cbitmap.h"
/**
* @class CPixmap
* @brief Implementation of CFile handling Pixmap file format.
*
* In order to support operations on pixmaps in color mode an
* implementations of CPixelFormat is used. These classe are
* allowed to modify the pixmap header, pixelbuffer and color table directly.
*
* On error CFile::FileError is thrown.
*/
class CPixmap : public CBitmap
{
public:
/**
* @method CPixmap
* @brief Default ctor
* @param -
* @return -
* @globalvars none
* @exception none
* @conditions none
*/
CPixmap();
/**
* @method ~CPixmap
* @brief Default dtor
* @param -
* @return -
* @globalvars none
* @exception none
* @conditions none
*/
~CPixmap()
{}
/**
* @method read
* @brief Reads Pixmap from filestream.
* On error an exception is thrown.
* @param in filestream to read data from
* @return -
* @globalvars none
* @exception CFile::FileError
* @exception bad_alloc
* @conditions none
*/
void read(std::ifstream& in);
/**
* @method write
* @brief Writes Pixmap to filestream.
* @param out filestream to read data from
* @return -
* @globalvars none
* @exception FileError
* @exception bad_alloc
* @conditions none
*/
void write(std::ofstream& out, std::string& filename);
#ifdef DEBUG
/**
* @method dump
* @brief Dumps the Pixmap file header and pixel data to ostream
* @param out output stream
* @return -
* @globalvars
* @exception
* @conditions
*/
void dump(std::ostream& out);
#endif
/**
* @brief Pixmap Header structure
*/
#pragma pack(push,1)
typedef struct
{
/** the xpm width in pixels (signed integer) */
uint32_t xpmWidth;
/** the xpm height in pixels (signed integer) */
uint32_t xpmHeight;
/** the number of colors (signed integer) */
uint32_t nColor;
/** the number of characters per pixel (signed integer) */
uint32_t nChar;
/** X-Position Hotspots */
uint32_t xHotspot;
/** Y-Position Hotspots */
uint32_t yHotspot;
/* is hotspot set */
bool _HOTSPOT;
/* XPMEXT extension tag found*/
bool _XPMEXT;
/* unchanged extension */
std::string extension;
} PIXMAP_FILEHEADER;
#pragma pack(pop)
/* TODO */
const uint32_t getPixelDataSize()
{
return m_fileheader.xpmWidth * m_fileheader.xpmHeight * m_fileheader.nChar;
}
/* TODO */
const uint32_t getHeight()
{
/* width and height can be negativ */
return m_fileheader.xpmHeight;
}
/* TODO */
const uint32_t getWidth()
{
/* width and height can be negativ */
return m_fileheader.xpmWidth;
}
/**
* @method hasColorTable
* @brief Check if bitmap has a colortable
* (we don't support this yet for windows bitmaps)
* @param -
* @return true if bitmap has a colortable. false otherwise
* @globalvars none
* @exception none
* @conditions none
*/
const bool hasColorTable()
{
return true;
}
/* TODO */
const bool isMirrored()
{
/* pixmap is never mirrored */
return false;
}
protected:
/* members */
/** fileheader */
PIXMAP_FILEHEADER m_fileheader;
/** infoheader */
};
#endif
/* vim: set et sw=2 ts=2: */
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