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ZDirectPixmap.h

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00001 //-------------------------------------------------------------------------------------------------
00002 //                                                                    
00003 //   Header Name: ZDirectPixmap.h
00004 //
00005 //   General Description: Used to access the protected fields in QPixmap.
00006 //
00007 //-------------------------------------------------------------------------------------------------
00008 //
00009 //                            Motorola Confidential Proprietary
00010 //                     Template ID and version: TMP_LFC_50068  Version 1.2
00011 //                      (c) Copyright Motorola 2004, All Rights Reserved
00012 //
00013 //-------------------------------------------------------------------------------------------------
00014 
00015 #ifndef ZDIRECTPIXMAP_H
00016 #define ZDIRECTPIXMAP_H
00017 
00018 #ifndef __cplusplus
00019 #error "This is a C++ header file; it requires C++ to compile."
00020 #endif
00021 
00022 #include <qpixmap.h>
00023 
00024 /**
00025  * Provides a wrapper so that applications can directly access the fields of 
00026  * a QPixmap
00027  *
00028  * Qt does not allow applications to access the individual bytes of a 
00029  * QPixmap because, traditionally, the QPixmap might live on another computer
00030  * (an X-Windows server, for example).  However, qt-embedded applications
00031  * don't have this restriction.  So ZDirectPixmap was created to allow
00032  * a QPixmap to be directly accessible.
00033  */
00034 
00035 class ZDirectPixmap : public QPixmap
00036 {
00037 public:
00038 
00039     /**
00040      * Constructor for a DirectPixmap.
00041      *
00042      * @param width width in pixels
00043      * @param height height in pixels
00044      * @param depth depth in bits per pixel (default is -1)
00045      */
00046     ZDirectPixmap(int width, int height, int depth=-1);
00047    
00048     /**
00049      * returns a pointer to the actual data contained in the pixmap
00050      */ 
00051     unsigned char* bits();
00052 
00053     /**
00054      * returns a const pointer to the actual data contained in the pixmap
00055      */
00056     const unsigned char* bits() const;
00057 
00058     /**
00059      * returns the number of bytes per line for the pixmap. 
00060      */
00061     int bytesPerLine() const;
00062 
00063 };
00064 
00065 #endif // #ifndef ZDIRECTPIXMAP_H
00066     

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