USB camera zoom image button

// ButtonMine.cpp : implementation file // #include "stdafx.h" #include "ButtonMine.h" #include<afxpriv.h> #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif ///////////////////////////////////////////////////////////////////////////// ButtonMine::ButtonMine() { p_Tip=0; } ButtonMine::~ButtonMine() { delete p_Tip; } void ButtonMine::P_GetColorToByte3(COLORREF clr, BYTE *pb) { BYTE*p=(BYTE*)&clr; pb[0]=p[2]; pb[1]=p[1]; pb[2]=p[0]; } BEGIN_MESSAGE_MAP(ButtonMine, CButton) //{{AFX_MSG_MAP(ButtonMine) ON_WM_PAINT() ON_WM_LBUTTONDOWN() ON_WM_LBUTTONUP() ON_WM_ENABLE() ON_WM_SETFOCUS() ON_WM_KILLFOCUS() //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// BOOL ButtonMine::SetImage(int iBmpID,LPCSTR pszToolTip,COLORREF clrBkgnd,BOOL bAutoSize,BOOL bNormalDisable) { BOOL b=SetImage(iBmpID,clrBkgnd,bAutoSize,bNormalDisable); if(b==0) return 0; SetToolTip(pszToolTip); return 1; } BOOL ButtonMine::SetImage(LPCSTR pszFile,LPCSTR pszToolTip,COLORREF clrBkgnd,BOOL bAutoSize,BOOL bNormalDisable) { BOOL b=SetImage(pszFile,clrBkgnd,bAutoSize,bNormalDisable); if(b==0) return 0; SetToolTip(pszToolTip); return 1; } BOOL ButtonMine::SetImage(LPCSTR pszFile,COLORREF clrBkgnd,BOOL bAutoSize,BOOL bNormalDisable) { USES_CONVERSION; IPicture*pPicture=0; COLORREF clrBk=RGB(255,255,255); //return hr BOOL b=::OleLoadPicturePath(T2OLE(pszFile),0,0,clrBkgnd,IID_IPicture,(LPVOID*)&pPicture)?0:1; if(pPicture==0) b=0; if(b) { TheScreenDC dcScreen; if(dcScreen.Create()==0) return 0; TheMemDC dcMem; b=dcMem.CreateCompatibleDC(dcScreen.hDC); if(b) { long iW; long iH; pPicture->get_Width(&iW); pPicture->get_Height(&iH); int iMdW=MulDiv(iW,::GetDeviceCaps(dcScreen.hDC,LOGPIXELSX),2540); int iMdH=MulDiv(iH,::GetDeviceCaps(dcScreen.hDC,LOGPIXELSY),2540); b=dcMem.CreateBitmap(dcScreen.hDC,iMdW,iMdH); //return hr b=pPicture->Render(dcMem.dc.m_hDC,0,0,iMdW,iMdH,0,iH,iW,-iH,0)?0:1; if(b) { HBITMAP hBmpSrc=(HBITMAP)dcMem.bmp.GetSafeHandle(); b=P_CreateBuffers(dcMem.dc.m_hDC,hBmpSrc,clrBkgnd,bNormalDisable); } } pPicture->Release(); } return b; } BOOL ButtonMine::SetImage(int iBmpID,COLORREF clrBkgnd,BOOL bAutoSize,BOOL bNormalDisable) { inf.bAutoSize=bAutoSize; //------------------------------- create 24 bits bitmaps CBitmap bmp; if(bmp.LoadBitmap(iBmpID)==0) return 0; TheScreenDC dcScreen; if(dcScreen.Create()==0) return 0; TheMemDC dcMem; if(dcMem.CreateCompatibleDC(dcScreen.hDC)==0) return 0; if(dcMem.SelectObject(&bmp)==0) return 0; HBITMAP hBmpSrc=(HBITMAP)bmp.GetSafeHandle(); BOOL b=P_CreateBuffers(dcMem.dc.m_hDC,hBmpSrc,clrBkgnd,bNormalDisable); if(b) P_InitButton(); return b; } BOOL ButtonMine::P_CreateBuffers(HDC hDC, HBITMAP hBmp,COLORREF clrBkgnd,BOOL bNormalDisable) { BITMAP bp; ::GetObject(hBmp,sizeof(BITMAP),&bp); const CSize siSrc(bp.bmWidth,bp.bmHeight); BITMAPINFO bi; memset(&bi,0,sizeof(BITMAPINFO)); BITMAPINFOHEADER&bh=bi.bmiHeader; bh.biSize=sizeof(BITMAPINFOHEADER); int iScan=::GetDIBits(hDC,hBmp,0,siSrc.cy,0,&bi,DIB_RGB_COLORS); if(iScan==0) return 0; int i=siSrc.cx*3; while(i%4) i++; const int iRowByteSrc=i; const int iSizeBufSrc=iRowByteSrc*siSrc.cy; BYTE*pbBufSrc=new BYTE[iSizeBufSrc]; if(pbBufSrc==0) return 0; bh.biClrUsed=0; bh.biCompression=0; bh.biBitCount=24; bh.biSizeImage=iSizeBufSrc; iScan=::GetDIBits(hDC,hBmp,0,siSrc.cy,pbBufSrc,&bi,DIB_RGB_COLORS); if(iScan!=siSrc.cy) { delete []pbBufSrc; return 0; } //make button image 2x2 pixels larger than source image, //so disabled images are nicer const int iBtnW=siSrc.cx+2; const int iBtnH=siSrc.cy+2; i=iBtnW*3; while(i%4) i++; const int iRowByteTgt=i; const int iSizeBufTgt=iRowByteTgt*iBtnH; if( (bmp_Nml.CreateBuffer(iSizeBufTgt)==0)|| (bmp_Dis.CreateBuffer(iSizeBufTgt)==0)) { delete []pbBufSrc; return 0; } //referece colors BYTE btBack[3],btFace[3]; P_GetColorToByte3(clrBkgnd,btBack); P_GetColorToByte3(::GetSysColor(COLOR_BTNFACE),btFace); int iy,ix; BYTE*pbY0,*pb0; BYTE*pbY1,*pb1; //clear bkgnd pbY0=bmp_Nml.pbBuf; pbY1=bmp_Dis.pbBuf; for(iy=0;iy<iBtnH;iy++) { pb0=pbY0; pb1=pbY1; for(ix=0;ix<iBtnW;ix++) { pb0[0]=pb1[0]=btFace[0]; pb0[1]=pb1[1]=btFace[1]; pb0[2]=pb1[2]=btFace[2]; pb0+=3; pb1+=3; } pbY0+=iRowByteTgt; pbY1+=iRowByteTgt; } //copy source bitmap into normal buffer pbY0=pbBufSrc; pbY1=bmp_Nml.pbBuf+iRowByteTgt; int ix1; for(iy=0;iy<siSrc.cy;iy++) { pb0=pbY0; pb1=pbY1; pb1+=3; //source button width for(ix1=0;ix1<siSrc.cx;ix1++) { if((pb0[0]!=btBack[0])||(pb0[1]!=btBack[1])||(pb0[2]!=btBack[2])) { pb1[0]=pb0[0]; pb1[1]=pb0[1]; pb1[2]=pb0[2]; } pb0+=3; pb1+=3; } pbY0+=iRowByteSrc; pbY1+=iRowByteTgt; } //end of copy delete []pbBufSrc; //modify bitmap-info-header bh.biWidth =iBtnW; bh.biHeight =iBtnH; bh.biSizeImage =iSizeBufTgt; //set to classes memcpy(&inf.bih,&bh,sizeof(BITMAPINFOHEADER)); //-------------- make disabled bitmap pbY0=bmp_Nml.pbBuf+iRowByteTgt; pbY1=bmp_Dis.pbBuf+iRowByteTgt; BYTE*pt; //make white first for(iy=1;iy<iBtnH-1;iy++) { pb0=pbY0+3; pb1=pbY1+3; for(ix=1;ix<iBtnW-1;ix++) { if((pb0[0]!=btFace[0])||(pb0[1]!=btFace[1])||(pb0[2]!=btFace[2])) { if(bNormalDisable) { pt=pb1+3; pt-=iRowByteTgt; pt[0]=255; pt[1]=255; pt[2]=255; } else { pt=pb1-3; pt+=iRowByteTgt; pt[0]=255; pt[1]=255; pt[2]=255; } } pb0+=3; pb1+=3; } pbY0+=iRowByteTgt; pbY1+=iRowByteTgt; } //simple math: iMax=dbK*Value+iMin, where Value is from 0 to 255 int iv=(btFace[0]+btFace[1]+btFace[2])/3; const int iMin=(iv+64)/2; const int iMax=235; const double dbK=(iMax-iMin)/255.00; pbY0=bmp_Nml.pbBuf+iRowByteTgt; pbY1=bmp_Dis.pbBuf+iRowByteTgt; for(iy=1;iy<iBtnH-1;iy++) { pb0=pbY0; pb1=pbY1; for(ix=0;ix<iBtnW;ix++) { if((pb0[0]!=btFace[0])||(pb0[1]!=btFace[1])||(pb0[2]!=btFace[2])) { iv=(pb0[0]+pb0[1]+pb0[2])/3; iv=(int)(dbK*iv+iMin); pb1[0]=iv; pb1[1]=iv; pb1[2]=iv; } pb0+=3; pb1+=3; } pbY0+=iRowByteTgt; pbY1+=iRowByteTgt; } return 1; } void ButtonMine::P_InitButton() { if(inf.bInit!=0) return; if(inf.bAutoSize==0) return; if(::IsWindow(m_hWnd)==0) return; inf.bInit=1; CRect rc; const BITMAPINFOHEADER&bih=inf.bih; GetWindowRect(&rc); rc.right =rc.left+bih.biWidth+6; rc.bottom =rc.top+bih.biHeight+6; ::MapWindowPoints(0,GetParent()->m_hWnd,(POINT*)&rc,2); MoveWindow(&rc); RedrawWindow(); } void ButtonMine::OnEnable(BOOL bEnable) { CButton::OnEnable(bEnable); RedrawWindow(); } void ButtonMine::OnSetFocus(CWnd* pOldWnd) { CButton::OnSetFocus(pOldWnd); RedrawWindow(); } void ButtonMine::OnKillFocus(CWnd* pNewWnd) { CButton::OnKillFocus(pNewWnd); RedrawWindow(); } void ButtonMine::P_Draw3dRect(CDC &dc, const CRect &rc, CPen &penTL, CPen &penBR) { dc.MoveTo(rc.left,rc.bottom); dc.SelectObject(&penTL); dc.LineTo(rc.left,rc.top); dc.LineTo(rc.right,rc.top); dc.SelectObject(&penBR); dc.LineTo(rc.right,rc.bottom); dc.LineTo(rc.left,rc.bottom); } void ButtonMine::OnPaint() { P_InitButton(); CPaintDC dc(this); BITMAPINFOHEADER&bih=inf.bih; CRect rc; GetClientRect(&rc); int iX0=(rc.Width()-bih.biWidth)/2; int iY0=(rc.Height()-bih.biHeight)/2; if(inf.bBtnDn) { iX0++; iY0++; } BYTE*pb; const BOOL bEnable=IsWindowEna