LCD_PIXELINDEX* GUI_MEMDEV_XY2PTR(int x,int y) {
GUI_MEMDEV* pDev = GUI_MEMDEV_h2p(GUI_Context.hDevData);
U8 *pData = (U8*)(pDev+1);
#if GUI_DEBUG_LEVEL >= GUI_DEBUG_LEVEL_CHECK_ALL
if ((x >= pDev->x0+pDev->XSize) | (x<pDev->x0) | (y >= pDev->y0+pDev->YSize) | (y<pDev->y0)) {
GUI_DEBUG_ERROROUT2("GUI_MEMDEV_XY2PTR: parameters out of bounds",x,y);
}
#endif
pData += (y- pDev->y0) * pDev->BytesPerLine;
return ((LCD_PIXELINDEX*)pData) + x - pDev->x0;
}
void GUI_MEMDEV_SetOrg(GUI_MEMDEV_Handle hMem, int x0, int y0) {
/* Make sure memory handle is valid */
if (!hMem) {
if ((hMem = GUI_Context.hDevData) ==0) {
return;
}
}
GUI_LOCK();
{
GUI_MEMDEV* pDev = GUI_MEMDEV_h2p(hMem); /* Convert to pointer */
pDev->y0 = y0;
pDev->x0 = x0;
LCD_SetClipRectMax();
/* Move usage along */
if (pDev->hUsage) {
GUI_USAGE* pUsage = GUI_USAGE_h2p(pDev->hUsage);
if (((pUsage->XSize = pDev->XSize) != 0) && ((pUsage->YSize = pDev->YSize) != 0)) {
pUsage->x0 = x0;
pUsage->y0 = y0;
}
}
}
GUI_UNLOCK();
}
static void DrawBitLine1BPP(GUI_USAGE* pUsage, int x, int y, U8 const*p, int Diff, int xsize, const LCD_PIXELINDEX*pTrans) {
LCD_PIXELINDEX pixels;
LCD_PIXELINDEX Index0 = *(pTrans+0);
LCD_PIXELINDEX Index1 = *(pTrans+1);
LCD_PIXELINDEX* pData;
U8 PixelCnt;
GUI_MEMDEV* pDev = GUI_MEMDEV_h2p(GUI_Context.hDevData);
PixelCnt = 8- (Diff&7);
pixels = (*p) << (Diff&7);
pData = GUI_MEMDEV_XY2PTR(x,y);
GUI_DEBUG_ERROROUT3_IF( x < pDev->x0, "GUIDEV.c: DrawBitLine1BPP, Act= %d, Border= %d, Clip= %d"
,x,pDev->x0, GUI_Context.ClipRect.x0);
switch (GUI_Context.DrawMode & (LCD_DRAWMODE_TRANS|LCD_DRAWMODE_XOR)) {
case 0: /* Write mode */
PixelLoopWrite:
if (PixelCnt>xsize)
PixelCnt =xsize;
xsize -= PixelCnt;
do {
*pData++ = (pixels&0x80) ? Index1 : Index0;
pixels<<=1;
} while (--PixelCnt);
if (xsize) {
PixelCnt=8;
pixels = *(++p);
goto PixelLoopWrite;
}
break;
case LCD_DRAWMODE_TRANS:
PixelLoopTrans:
if (PixelCnt>xsize)
PixelCnt =xsize;
xsize -= PixelCnt;
do {
if ((pixels&0x80)) {
if (pUsage)
GUI_USAGE_AddPixel(pUsage, x,y);
*pData = Index1;
}
x++;
pData++;
pixels<<=1;
} while (--PixelCnt);
if (xsize) {
PixelCnt=8;
pixels = *(++p);
goto PixelLoopTrans;
}
break;
case LCD_DRAWMODE_XOR:;
PixelLoopXor:
if (PixelCnt>xsize)
PixelCnt =xsize;
xsize -= PixelCnt;
do {
if ((pixels&0x80))
*pData = pDev->NumColors - 1 - *pData;
pData++;
pixels<<=1;
} while (--PixelCnt);
if (xsize) {
PixelCnt=8;
pixels = *(++p);
goto PixelLoopXor;
}
break;
}
}
