www.pudn.com > uCGUI3.24-MemDev-for-3.90a.rar > GUIDEV_CmpWithLCD.c

/*! @file GUIDEV_CmpWithLCD.c 
 *  Implementation of Checking for memory devices  
 * 
 *  @author hiber modified 
 *  @author Copyleft (C) 1981-2006, All Rights Givenup 
 *  @date 04/18/2006 
 *  @version  
 * 
 *  @note  
 *  @attention  
 *  @warning  
 *  @bug 
 * 
 *  @todo 
 *  @example  
 *  @see 
 */ 
#include  
#include "GUI_Private.h" 
#include "GUIDebug.h" 
 
#if GUI_SUPPORT_MEMDEV 
 
extern void * _GUI_ALLOC_h2p_Lock(GUI_HMEM hMem); 
#define GUI_ALLOC_H2P(h)          _GUI_ALLOC_h2p_Lock(h) 
#define GUI_ALLOC_FREE(handle)    GUI_ALLOC_Free(handle) 
#define GUI_ALLOC_LOCK(handle)    _GUI_ALLOC_h2p_Lock(handle) 
#define GUI_ALLOC_UNLOCK(handle) 
 
#ifdef GUI_USAGE_H2P 
    #undef GUI_USAGE_H2P 
    #define GUI_USAGE_H2P(h) ((GUI_USAGE*)_GUI_ALLOC_h2p_Lock(h))  
#endif 
 
#ifdef GUI_MEMDEV_H2P 
    #undef GUI_MEMDEV_H2P 
    #define GUI_MEMDEV_H2P _GUI_ALLOC_h2p_Lock 
#endif 
 
////////////////////////////////////////////////////////////////////////// 
 
//! 将存储设备数据和LCD的数据进行比较 
int GUI_MEMDEV_CompareWithLCD(GUI_MEMDEV_Handle hMem, int *px, int *py, int *pExp, int *pAct) 
{ 
    /* Make sure memory handle is valid */ 
    if (!hMem) 
    { 
        hMem = GUI_Context.hDevData; 
    } 
 
    if (!hMem) 
    { 
        return 1; 
    } 
 
 
    // 大括号... 
    { 
        GUI_MEMDEV *pDevData = (GUI_MEMDEV*)GUI_ALLOC_LOCK(hMem); /* Convert to pointer */ 
        int y = pDevData->y0; 
        int x0 = pDevData->x0; 
        int XMax = pDevData->XSize + x0; 
        int YMax = pDevData->YSize + y; 
        int Max; 
        int MagX = LCD_GetXMag(); 
        int MagY = LCD_GetYMag(); 
 
        /* Calculate limits */ 
        if (y < 0) 
        { 
            y = 0; 
        } 
 
        if (x0 < 0) 
        { 
            x0 = 0; 
        } 
 
        Max = LCD_GET_YSIZE(); 
        if (YMax > Max) 
        { 
            YMax = Max; 
        } 
 
        Max = LCD_GET_XSIZE(); 
        if (XMax > Max) 
        { 
            XMax = Max; 
        } 
 
        for (; y < YMax; y++) 
        { 
            int x = x0; 
            LCD_PIXELINDEX *pData = (LCD_PIXELINDEX *)GUI_MEMDEV__XY2PTR(x, y); 
 
            for (x = x0; x < XMax; x++) 
            { 
                int Exp =  *pData++; 
                int Act = LCD_L0_GetPixelIndex(x *MagX, y *MagY); 
 
                if (Act != Exp) 
                { 
                    *px = x; 
                    *py = y; 
                    *pAct = Act; 
                    *pExp = Exp; 
 
                    return 1; 
                } 
            } 
        } 
    } 
 
 
    GUI_ALLOC_UNLOCK(hMem); 
    return 0; 
} 
 
void GUIDEV_CmpWithLCD(void)  
{ 
    // do nothing... 
} 
 
#else 
 
void GUIDEV_CmpWithLCD(void)  
{ 
    /* avoid empty object files */ 
}  
 
#endif /* GUI_SUPPORT_MEMDEV */