xshadebutton.cpp

模拟电子课程的教学演示程序

	pRealDC->BitBlt(0,0,cx,cy,&hdcMem,0,0,SRCCOPY); //copy in the real world
	//restore the old objects to avoid memory leakage <David Scambler>
	if (pOldBitmap)	hdcMem.SelectObject(pOldBitmap);
//	hdcMem.DeleteDC(); the destructor will do this for us
//	hBitmap.DeleteObject(); the destructor will do this for us

}
/////////////////////////////////////////////////////////////////////////////
void CxShadeButton::SetShade(UINT shadeID,BYTE granularity,BYTE highlight,BYTE coloring,COLORREF color)
{
	long	sXSize,sYSize,bytes,j,i,k,h;
	BYTE	*iDst ,*posDst;
	
	RECT rect;
	GetWindowRect(&rect);
	sYSize=rect.bottom-rect.top;
	sXSize=rect.right-rect.left ;

	m_dh.Create(max(1,sXSize-2*m_FocusRectMargin-1),1,8);	//create the horizontal focus bitmap
	m_dv.Create(1,max(1,sYSize-2*m_FocusRectMargin),8);	//create the vertical focus bitmap

	m_dNormal.Create(sXSize,sYSize,8);					//create the default bitmap

	COLORREF hicr=GetSysColor(COLOR_BTNHIGHLIGHT);		//get the button base colors
	COLORREF midcr=GetSysColor(COLOR_BTNFACE);
	COLORREF locr=GetSysColor(COLOR_BTNSHADOW);
	long r,g,b;											//build the shaded palette
	for(i=0;i<129;i++){
		r=((128-i)*GetRValue(locr)+i*GetRValue(midcr))/128;
		g=((128-i)*GetGValue(locr)+i*GetGValue(midcr))/128;
		b=((128-i)*GetBValue(locr)+i*GetBValue(midcr))/128;
		m_dNormal.SetPaletteIndex((BYTE)i,(BYTE)r,(BYTE)g,(BYTE)b);
		m_dh.SetPaletteIndex((BYTE)i,(BYTE)r,(BYTE)g,(BYTE)b);
		m_dv.SetPaletteIndex((BYTE)i,(BYTE)r,(BYTE)g,(BYTE)b);
	}
	for(i=1;i<129;i++){
		r=((128-i)*GetRValue(midcr)+i*GetRValue(hicr))/128;
		g=((128-i)*GetGValue(midcr)+i*GetGValue(hicr))/128;
		b=((128-i)*GetBValue(midcr)+i*GetBValue(hicr))/128;
		m_dNormal.SetPaletteIndex((BYTE)(i+127),(BYTE)r,(BYTE)g,(BYTE)b);
		m_dh.SetPaletteIndex((BYTE)(i+127),(BYTE)r,(BYTE)g,(BYTE)b);
		m_dv.SetPaletteIndex((BYTE)(i+127),(BYTE)r,(BYTE)g,(BYTE)b);
	}

	m_dNormal.BlendPalette(color,coloring);	//color the palette

	iDst=m_dh.GetBits();		//build the horiz. dotted focus bitmap
	j=(long)m_dh.GetWidth();
	for(i=0;i<j;i++){
//		iDst[i]=64+127*(i%2);	//soft
		iDst[i]=255*(i%2);		//hard
	}

	iDst=m_dv.GetBits();		//build the vert. dotted focus bitmap
	j=(long)m_dv.GetHeight();
	for(i=0;i<j;i++){
//		*iDst=64+127*(i%2);		//soft
		*iDst=255*(i%2);		//hard
		iDst+=4;
	}

	bytes = m_dNormal.GetLineWidth();
	iDst = m_dNormal.GetBits();
	posDst =iDst;
	long a,x,y,d,xs,idxmax,idxmin;

	int grainx2=RAND_MAX/(max(1,2*granularity));
	idxmax=255-granularity;
	idxmin=granularity;

	switch(shadeID){
//----------------------------------------------------
	case 8:	//SHS_METAL
		m_dNormal.Clear();
		// create the strokes
		k=40;	//stroke granularity
		for(a=0;a<200;a++){
			x=rand()/(RAND_MAX/sXSize); //stroke postion
			y=rand()/(RAND_MAX/sYSize);	//stroke position
			xs=rand()/(RAND_MAX/min(sXSize,sYSize))/2; //stroke lenght
			d=rand()/(RAND_MAX/k);	//stroke color
			for(i=0;i<xs;i++){
				if (((x-i)>0)&&((y+i)<sYSize))
					m_dNormal.SetPixelIndex(x-i,y+i,(BYTE)d);
				if (((x+i)<sXSize)&&((y-i)>0))
					m_dNormal.SetPixelIndex(sXSize-x+i,y-i,(BYTE)d);
			}
		}
		//blend strokes with SHS_DIAGONAL
		posDst =iDst;
		a=(idxmax-idxmin-k)/2;
		for(i = 0; i < sYSize; i++) {
			for(j = 0; j < sXSize; j++) {
				d=posDst[j]+((a*i)/sYSize+(a*(sXSize-j))/sXSize);
				posDst[j]=(BYTE)d;
				posDst[j]+=rand()/grainx2;
			}
			posDst+=bytes;
		}

		break;
//----------------------------------------------------
	case 7:	// SHS_HARDBUMP
		//set horizontal bump
		for(i = 0; i < sYSize; i++) {
			k=(255*i/sYSize)-127;
			k=(k*(k*k)/128)/128;
			k=(k*(128-granularity*2))/128+128;
			for(j = 0; j < sXSize; j++) {
				posDst[j]=(BYTE)k;
				posDst[j]+=rand()/grainx2-granularity;
			}
			posDst+=bytes;
		}
		//set vertical bump
		d=min(16,sXSize/6);	//max edge=16
		a=sYSize*sYSize/4;
		posDst =iDst;
		for(i = 0; i < sYSize; i++) {
			y=i-sYSize/2;
			for(j = 0; j < sXSize; j++) {
				x=j-sXSize/2;
				xs=sXSize/2-d+(y*y*d)/a;
				if (x>xs) posDst[j]=idxmin+(BYTE)(((sXSize-j)*128)/d);
				if ((x+xs)<0) posDst[j]=idxmax-(BYTE)((j*128)/d);
				posDst[j]+=rand()/grainx2-granularity;
			}
			posDst+=bytes;
		}
		break;
//----------------------------------------------------
	case 6: //SHS_SOFTBUMP
		for(i = 0; i < sYSize; i++) {
			h=(255*i/sYSize)-127;
			for(j = 0; j < sXSize; j++) {
				k=(255*(sXSize-j)/sXSize)-127;
				k=(h*(h*h)/128)/128+(k*(k*k)/128)/128;
				k=k*(128-granularity)/128+128;
				if (k<idxmin) k=idxmin;
				if (k>idxmax) k=idxmax;
				posDst[j]=(BYTE)k;
				posDst[j]+=rand()/grainx2-granularity;
			}
			posDst+=bytes;
		}
		break;
//----------------------------------------------------
	case 5: // SHS_VBUMP
		for(j = 0; j < sXSize; j++) {
			k=(255*(sXSize-j)/sXSize)-127;
			k=(k*(k*k)/128)/128;
			k=(k*(128-granularity))/128+128;
			for(i = 0; i < sYSize; i++) {
				posDst[j+i*bytes]=(BYTE)k;
				posDst[j+i*bytes]+=rand()/grainx2-granularity;
			}
		}
		break;
//----------------------------------------------------
	case 4: //SHS_HBUMP
		for(i = 0; i < sYSize; i++) {
			k=(255*i/sYSize)-127;
			k=(k*(k*k)/128)/128;
			k=(k*(128-granularity))/128+128;
			for(j = 0; j < sXSize; j++) {
				posDst[j]=(BYTE)k;
				posDst[j]+=rand()/grainx2-granularity;
			}
			posDst+=bytes;
		}
		break;
//----------------------------------------------------
	case 1:	//SHS_DIAGSHADE
		a=(idxmax-idxmin)/2;
		for(i = 0; i < sYSize; i++) {
			for(j = 0; j < sXSize; j++) {
				posDst[j]=(BYTE)(idxmin+a*i/sYSize+a*(sXSize-j)/sXSize);
				posDst[j]+=rand()/grainx2-granularity;
			}
			posDst+=bytes;
		}
		break;
//----------------------------------------------------
	case 2:	//SHS_HSHADE
		a=idxmax-idxmin;
		for(i = 0; i < sYSize; i++) {
			k=a*i/sYSize+idxmin;
			for(j = 0; j < sXSize; j++) {
				posDst[j]=(BYTE)k;
				posDst[j]+=rand()/grainx2-granularity;
			}
			posDst+=bytes;
		}
		break;
//----------------------------------------------------
	case 3:	//SHS_VSHADE:
		a=idxmax-idxmin;
		for(j = 0; j < sXSize; j++) {
			k=a*(sXSize-j)/sXSize+idxmin;
			for(i = 0; i < sYSize; i++) {
				posDst[j+i*bytes]=(BYTE)k;
				posDst[j+i*bytes]+=rand()/grainx2-granularity;
			}
		}
		break;
//----------------------------------------------------
	default:	//SHS_NOISE
		for(i = 0; i < sYSize; i++) {
			for(j = 0; j < sXSize; j++) {
				posDst[j]=128+rand()/grainx2-granularity;
			}
			posDst+=bytes;
		}
	}
//----------------------------------------------------
	m_dDisabled.Clone(&m_dNormal);	//build the other bitmaps
	m_dOver.Clone(&m_dNormal);
	m_dOver.BlendPalette(hicr,highlight);
	m_dDown.Clone(&m_dOver);
}
/////////////////////////////////////////////////////////////////////////////
void CxShadeButton::SetIcon(UINT nIcon, UINT nIconAlign, UINT nIconDown)
{
//	m_Icon=AfxGetApp()->LoadIcon(nIcon);	//load resource
	m_Icon = (HICON)::LoadImage(AfxGetInstanceHandle(),
								MAKEINTRESOURCE(nIcon),
								IMAGE_ICON, 0, 0, 0);
	if (m_Icon){							// if success...
		ICONINFO iinfo;						// get icon info
		GetIconInfo(m_Icon, &iinfo);
		m_IconBox.left=m_IconBox.top=0;
		m_IconBox.right = iinfo.xHotspot * 2;
		m_IconBox.bottom = iinfo.yHotspot * 2;

		long x,y;
		RECT rect;
		GetWindowRect(&rect);
		y=rect.bottom-rect.top;
		x=rect.right-rect.left;
		switch (nIconAlign){				//set the icon location
		case BS_RIGHT:
			m_IconAlign=BS_RIGHT;
			m_IconBox.OffsetRect(x - iinfo.xHotspot*2 - m_FocusRectMargin,
								 max(0, (long)(y/2 - iinfo.yHotspot)));
			break;
		case BS_LEFT:
			m_IconAlign=BS_LEFT;
			m_IconBox.OffsetRect(m_FocusRectMargin,
								 max(0, (long)(y/2 - iinfo.yHotspot)));
			break;
		default:
			m_IconAlign=BS_CENTER;
			m_IconBox.OffsetRect(max(0, (long)(x/2 - iinfo.xHotspot)),
								 max(0, (long)(y/2 - 2*iinfo.yHotspot)));
		}

		//release icon mask bitmaps (Orioli Alessandro <[e-mail]>)
		if( iinfo.hbmColor ) DeleteObject( iinfo.hbmColor );
		if( iinfo.hbmMask ) DeleteObject( iinfo.hbmMask );

		if (nIconDown > 0){	//load down icon
			m_IconDown = (HICON)::LoadImage(AfxGetInstanceHandle(),
											MAKEINTRESOURCE(nIconDown),
											IMAGE_ICON, 0, 0, 0);
			if (m_IconDown==NULL) m_IconDown= m_Icon;
		} else { m_IconDown= m_Icon; }	//reuse resource handle
	}
}
/////////////////////////////////////////////////////////////////////////////
void CxShadeButton::SetTextAlign(UINT nTextAlign)
{
//	see DrawText() styles...
	switch (nTextAlign){
	case BS_RIGHT:
		m_TextAlign=DT_RIGHT;
		break;
	case BS_LEFT:
		m_TextAlign=DT_LEFT;
		break;
	default:
		m_TextAlign=DT_CENTER;
	}
	m_TextAlign|=(DT_SINGLELINE|DT_VCENTER);
}
/////////////////////////////////////////////////////////////////////////////
void CxShadeButton::SetFlat(bool bFlag)
{ m_flat=bFlag; }	//set flat border mode
/////////////////////////////////////////////////////////////////////////////
COLORREF CxShadeButton::SetTextColor(COLORREF new_color)
{
	COLORREF tmp_color=m_TextColor;
	m_TextColor=new_color;
	return tmp_color;			//returns the previous color
}
/////////////////////////////////////////////////////////////////////////////
void CxShadeButton::SetToolTipText(CString s, CString sDown)
{
	m_ToolTipUp = s;		//normal tooltip
	m_ToolTipDw = sDown;	//tooltip for checked state

	//select the down tooltip if the button is already checked <Jesper Kinn錽>
	if (m_Checked && !m_ToolTipDw.IsEmpty()) s = m_ToolTipDw;
	
	if(m_tooltip.m_hWnd==NULL){
		if(m_tooltip.Create(this))	//first assignment
			if(m_tooltip.AddTool(this, (LPCTSTR)s)){
				m_tooltip.Activate(1);
				// enable multiline tooltips <Derek Lakin>
				m_tooltip.SendMessage(TTM_SETMAXTIPWIDTH, 0, 300);
			}
	} else {
		m_tooltip.UpdateTipText((LPCTSTR)s,this);
	}
}
/////////////////////////////////////////////////////////////////////////////
void CxShadeButton::RelayEvent(UINT message, WPARAM wParam, LPARAM lParam)
{
// This function will create a MSG structure, fill it in a pass it to
// the ToolTip control, m_ttip.  Note that we ensure the point is in window
// coordinates (relative to the control's window).
	if(NULL != m_tooltip.m_hWnd){
		MSG msg;
		msg.hwnd = m_hWnd;
		msg.message = message;
		msg.wParam = wParam;
		msg.lParam = lParam;
		msg.time = 0;
		msg.pt.x = LOWORD(lParam);
		msg.pt.y = HIWORD(lParam);

		m_tooltip.RelayEvent(&msg);
	}
}
/////////////////////////////////////////////////////////////////////////////
//Method......: OnLButtonDblClk
//Class.......: CxShadeButton
//
//Author......: Milan Gardian
//Created.....: MAR-2001
//
//Return value: NONE
//Parameters..: Used only to be forwarded as WM_LBUTTONDOWN message parameters
//Exceptions..: NONE
//------------
//Description :
//  > We do not care about doublelicks - handle this event
//    like an ordinary left-button-down event
//---------------------------------------------------------
void CxShadeButton::OnLButtonDblClk(UINT flags, CPoint point) 
{
    SendMessage(WM_LBUTTONDOWN, flags, MAKELPARAM(point.x, point.y));
}
/////////////////////////////////////////////////////////////////////////////
//Method......: OnLButtonDown
//Class.......: CxShadeButton
//
//Author......: Milan Gardian
//Created.....: MAR-2001
//
//Return value: NONE
//Parameters..: As follows
//    > [in] nFlags: not used
//    > [in] point: coordinates of the mouse pointer when this event was spawned
//Exceptions..: NONE
//------------