// Owner-drawn control service function:
void CVectorCtl::DrawItem( LPDRAWITEMSTRUCT lpDrawItemStruct )
{
CDC *pDC = CDC::FromHandle (lpDrawItemStruct->hDC); // Get CDC to draw
if (!m_bSelected && lpDrawItemStruct->itemState & ODS_SELECTED) {
// Just got re-selected (user starts a new mouse dragging session)
} else if (m_bSelected && // Last state was selected
!(lpDrawItemStruct->itemState & ODS_SELECTED) && // New state is NOT selected
(lpDrawItemStruct->itemState & ODS_FOCUS) && // New state is still in focus
m_procVectorChanged) // User asked for a callback
// User has left the track-ball and asked for a callback.
m_procVectorChanged ( rotationQuat );
m_bHasFocus = lpDrawItemStruct->itemState & ODS_FOCUS; // Update focus status
m_bSelected = lpDrawItemStruct->itemState & ODS_SELECTED; // Update selection status
if (!m_bBmpCreated) // 1st time
InitBitmap (lpDrawItemStruct, pDC);
if (m_bImageChange) { // Image has changes - recalc it!
if (m_procVectorChanging) // User has specified a callback
m_procVectorChanging ( rotationQuat ); // Call it!
BuildImage (lpDrawItemStruct);
m_bImageChange = FALSE;
}
pDC->BitBlt (0,0,m_iWidth, m_iHeight, &m_dcMem, 0, 0, SRCCOPY); // Update screen
}
void BuildChar16(int XPos,int YPos,Wchar Code,int CFont,
int Width,int Height,int Slant,int RotateAngle,int Color)
{
unsigned char *pImage;
int ImageLen,ImageW,ImageH;
unsigned char *CharBuffer;
assert(CFont==0);
ImageH=Height;
ImageW=(Width+7)/8;
ImageLen=ImageW*ImageH;
pImage=(unsigned char *)malloc(ImageLen);
//if(pImage==NULL)
if(pImage<0x1000)
{
ReportMemoryError("bld16");
return;
}
if(Width!=Height
|| GetCacheData(Code,CFont,Width,pImage,ImageLen)!=OpOK)
{
CharBuffer=GetChineseDot(Code);
memset(pImage,0,ImageLen); // clear it
ZoomCharBuffer(CharBuffer,CHINESEWIDTH,CHINESEHIGHT,
(float)Width/CHINESEWIDTH,(float)Height/CHINESEHIGHT,pImage,ImageW);
if(Width==Height)
PutCacheData(Code,CFont,Width,pImage,ImageLen);
}
BuildImage(pImage,XPos,YPos,Width,Height,Slant,RotateAngle,Color);
free(pImage);
}
