void CThumbnail::OnPaint()
{
PAINTSTRUCT paintstruct;
CDC* pDC;
pDC=BeginPaint(&paintstruct);
paintstruct.fErase=TRUE;
CRect rect;
GetClientRect(rect);
// first draw scaled version of thumbnail underneath title bar
CRButton* button;
button=GETDLGITEM(IDJ_TITLE);
CRect buttonrect;
button->GetClientRect(buttonrect);
rect.top+=buttonrect.bottom;
// +1 prevents gaps
int halfheight=rect.Height()/2+1;
int offset=rect.Height()/8+1;
int offset2=rect.Height()/16+1;
DrawScaledBitmap(pDC,FIL_THUMBTOP,rect.left,rect.top-offset,rect.Width(),halfheight+offset2);
DrawScaledBitmap(pDC,FIL_THUMBBOT,rect.left,rect.top+halfheight-offset2,rect.Width(),halfheight+offset2);
// now draw the box in the appropriate position
CRect rect2;
m_pView->GetClientRect(rect2);
m_boxSize=CSize((rect.right*rect2.right)/m_pView->m_size.cx,
(rect.Height()*rect2.bottom)/m_pView->m_size.cy);
if(m_LButtonDown==FALSE)
{
m_point=CPoint(((m_pView->m_scrollpoint.x*rect.right)/m_pView->m_size.cx)+(m_boxSize.cx/2),
((m_pView->m_scrollpoint.y*rect.Height())/m_pView->m_size.cy)+(m_boxSize.cy/2)+rect.top);
m_point=m_point+offsetfix; //quick thumbnail fix
}
m_point.x=max(m_boxSize.cx/2,m_point.x);
m_point.y=max((m_boxSize.cy/2)+rect.top,m_point.y);
m_point.x=min(rect.right-(m_boxSize.cx/2),m_point.x);
m_point.y=min(rect.bottom-(m_boxSize.cy/2),m_point.y);
CPen pen;
pen.CreatePen(PS_SOLID,2,RGB(255,0,0)); // red pen
pDC->SelectObject(&pen);
if (m_boxSize.cx<20)
{
pDC->MoveTo(m_point.x-10,m_point.y);
pDC->LineTo(m_point.x-m_boxSize.cx/2,m_point.y);
pDC->MoveTo(m_point.x+10,m_point.y);
pDC->LineTo(m_point.x+m_boxSize.cx/2,m_point.y);
}
if (m_boxSize.cy<20)
{
pDC->MoveTo(m_point.x,m_point.y-10);
pDC->LineTo(m_point.x,m_point.y-m_boxSize.cy/2);
pDC->MoveTo(m_point.x,m_point.y+10);
pDC->LineTo(m_point.x,m_point.y+m_boxSize.cy/2);
}
pDC->MoveTo(m_point.x-(m_boxSize.cx/2),m_point.y-(m_boxSize.cy/2));
pDC->LineTo(m_point.x+(m_boxSize.cx/2),m_point.y-(m_boxSize.cy/2));
pDC->LineTo(m_point.x+(m_boxSize.cx/2),m_point.y+(m_boxSize.cy/2));
pDC->LineTo(m_point.x-(m_boxSize.cx/2),m_point.y+(m_boxSize.cy/2));
pDC->LineTo(m_point.x-(m_boxSize.cx/2),m_point.y-(m_boxSize.cy/2));
EndPaint(&paintstruct);
}
void CThumbnail::InvalidateMapOnly()
{
CRect rect;
GetClientRect(rect);
CRButton* button;
button=GETDLGITEM(IDJ_TITLE);
CRect buttonrect;
button->GetClientRect(buttonrect);
rect.top=buttonrect.bottom;
InvalidateRect(rect);
}
void CThumbnail::OnLButtonDown(UINT nFlags, CPoint point)
{
CRButton* button;
button=GETDLGITEM(IDJ_TITLE);
CRect buttonrect;
button->GetClientRect(buttonrect);
if (point.y<=buttonrect.bottom)
CDialog::OnLButtonDown(nFlags, point);
else
{
m_LButtonDown=TRUE;
SetCapture();
m_point=point;
// m_point.y+=buttonrect.bottom;
InvalidateMapOnly();
}
}
void CThumbnail::UpdateView()
{
// if (m_pView->m_drawing) return;
CRect rect;
GetClientRect(rect);
CRButton* button;
button=GETDLGITEM(IDJ_TITLE);
CRect buttonrect;
button->GetClientRect(buttonrect);
rect.top=buttonrect.bottom;
// CPoint oldscrollpoint=m_pView->m_scrollpoint;
m_pView->m_scrollpoint=CPoint((((m_point.x-(m_boxSize.cx/2))*m_pView->m_size.cx)/rect.right)+1,
(((m_point.y-(m_boxSize.cy/2)-rect.top)*m_pView->m_size.cy)/(rect.Height()))+1);
if (m_pView->m_scrollpoint.x<0) m_pView->m_scrollpoint.x=0;
if (m_pView->m_scrollpoint.y<0) m_pView->m_scrollpoint.y=0;
// if (m_pView->m_scrollpoint!=oldscrollpoint)
// {
// m_pView->m_drawing=TRUE;
// m_pView->UpdateScrollbars();
// m_pView->m_mapdlg.ScrollWindow(oldscrollpoint.x-m_pView->m_scrollpoint.x,oldscrollpoint.y-m_pView->m_scrollpoint.y);
// }
m_pView->m_mapdlg.Invalidate();
m_pView->UpdateScrollbars();
}