colourpopup.cpp

WinCe下实现多线程

    return TRUE;
}

// Works out an appropriate size and position of this window
void CColourPopup::SetWindowSize()
{
    CSize TextSize;

    // If we are showing a custom or default text area, get the font and text size.
    if (m_strCustomText.GetLength() || m_strDefaultText.GetLength())
    {
        CClientDC dc(this);
        CFont* pOldFont = (CFont*) dc.SelectObject(&m_Font);

        // Get the size of the custom text (if there IS custom text)
        TextSize = CSize(0,0);
        if (m_strCustomText.GetLength())
            TextSize = dc.GetTextExtent(m_strCustomText);

        // Get the size of the default text (if there IS default text)
        if (m_strDefaultText.GetLength())
        {
            CSize DefaultSize = dc.GetTextExtent(m_strDefaultText);
            if (DefaultSize.cx > TextSize.cx) TextSize.cx = DefaultSize.cx;
            if (DefaultSize.cy > TextSize.cy) TextSize.cy = DefaultSize.cy;
        }

        dc.SelectObject(pOldFont);
        TextSize += CSize(2*m_nMargin,2*m_nMargin);

        // Add even more space to draw the horizontal line
        TextSize.cy += 2*m_nMargin + 2;
    }

    // Get the number of columns and rows
    //m_nNumColumns = (int) sqrt((double)m_nNumColours);    // for a square window (yuk)
    m_nNumColumns = 8;
    m_nNumRows = m_nNumColours / m_nNumColumns;
    if (m_nNumColours % m_nNumColumns) m_nNumRows++;

    // Get the current window position, and set the new size
    CRect rect;
    GetWindowRect(rect);

    m_WindowRect.SetRect(rect.left, rect.top, 
                         rect.left + m_nNumColumns*m_nBoxSize + 2*m_nMargin,
                         rect.top  + m_nNumRows*m_nBoxSize + 2*m_nMargin);

    // if custom text, then expand window if necessary, and set text width as
    // window width
    if (m_strDefaultText.GetLength()) 
    {
        if (TextSize.cx > m_WindowRect.Width())
            m_WindowRect.right = m_WindowRect.left + TextSize.cx;
        TextSize.cx = m_WindowRect.Width()-2*m_nMargin;

        // Work out the text area
        m_DefaultTextRect.SetRect(m_nMargin, m_nMargin, 
                                  m_nMargin+TextSize.cx, 2*m_nMargin+TextSize.cy);
        m_WindowRect.bottom += m_DefaultTextRect.Height() + 2*m_nMargin;
    }

    // if custom text, then expand window if necessary, and set text width as
    // window width
    if (m_strCustomText.GetLength()) 
    {
        if (TextSize.cx > m_WindowRect.Width())
            m_WindowRect.right = m_WindowRect.left + TextSize.cx;
        TextSize.cx = m_WindowRect.Width()-2*m_nMargin;

        // Work out the text area
        m_CustomTextRect.SetRect(m_nMargin, m_WindowRect.Height(), 
                                 m_nMargin+TextSize.cx, 
                                 m_WindowRect.Height()+m_nMargin+TextSize.cy);
        m_WindowRect.bottom += m_CustomTextRect.Height() + 2*m_nMargin;
   }

    // Need to check it'll fit on screen: Too far right?
    CSize ScreenSize(::GetSystemMetrics(SM_CXSCREEN), ::GetSystemMetrics(SM_CYSCREEN));
    if (m_WindowRect.right > ScreenSize.cx)
        m_WindowRect.OffsetRect(-(m_WindowRect.right - ScreenSize.cx), 0);

    // Too far left?
    if (m_WindowRect.left < 0)
        m_WindowRect.OffsetRect( -m_WindowRect.left, 0);

    // Bottom falling out of screen?
    if (m_WindowRect.bottom > ScreenSize.cy)
    {
        CRect ParentRect;
        m_pParent->GetWindowRect(ParentRect);
        m_WindowRect.OffsetRect(0, -(ParentRect.Height() + m_WindowRect.Height()));
    }

    // Set the window size and position
    MoveWindow(m_WindowRect, TRUE);
}


#ifndef _WIN32_WCE


// CColourPopup::CreateToolTips
//
//		Tooltips are only available in the Desktop version
//
void CColourPopup::CreateToolTips()
{
    // Create the tool tip
    if (!m_ToolTip.Create(this)) return;

    // Add a tool for each cell
    for (int i = 0; i < m_nNumColours; i++)
    {
        CRect rect;
        if (!GetCellRect(i, rect)) continue;
            m_ToolTip.AddTool(this, GetColourName(i), rect, 1);
    }
}

#endif


void CColourPopup::ChangeSelection(int nIndex)
{
    CClientDC dc(this);        // device context for drawing

    if (nIndex > m_nNumColours)
        nIndex = CUSTOM_BOX_VALUE; 

    if ((m_nCurrentSel >= 0 && m_nCurrentSel < m_nNumColours) ||
        m_nCurrentSel == CUSTOM_BOX_VALUE || m_nCurrentSel == DEFAULT_BOX_VALUE)
    {
        // Set Current selection as invalid and redraw old selection (this way
        // the old selection will be drawn unselected)
        int OldSel = m_nCurrentSel;
        m_nCurrentSel = INVALID_COLOUR;
        DrawCell(&dc, OldSel);
    }

    // Set the current selection as row/col and draw (it will be drawn selected)
    m_nCurrentSel = nIndex;
    DrawCell(&dc, m_nCurrentSel);

    // Store the current colour
    if (m_nCurrentSel == CUSTOM_BOX_VALUE)
        m_pParent->SendMessage(CPN_SELCHANGE, (WPARAM) m_crInitialColour, 0);
    else if (m_nCurrentSel == DEFAULT_BOX_VALUE)
    {
        m_crColour = CLR_DEFAULT;
        m_pParent->SendMessage(CPN_SELCHANGE, (WPARAM) CLR_DEFAULT, 0);
    }
    else
    {
        m_crColour = GetColour(m_nCurrentSel);
        m_pParent->SendMessage(CPN_SELCHANGE, (WPARAM) m_crColour, 0);
    }
}



void CColourPopup::EndSelection(int nMessage)
{
    ReleaseCapture();

#ifndef _WIN32_WCE

	//
	// This code is removed from the CE version, especially for PocketPC 2002 since
	// MFC does not directly support the CColorDialog. It is there, but you have to
	// explicitly link in commdlg.lib and use the ChooseColor API in commdlg.h
	// The result is not very nice: you get a dialog similar to this control, but
	// a VERY UGLY one. It does not seem to conform to PocketPC 2002 specs.
	//

    // If custom text selected, perform a custom colour selection
    if (nMessage != CPN_SELENDCANCEL && m_nCurrentSel == CUSTOM_BOX_VALUE)
    {
        m_bChildWindowVisible = TRUE;

        CColorDialog dlg(m_crInitialColour, CC_FULLOPEN | CC_ANYCOLOR, this);

        if (dlg.DoModal() == IDOK)
            m_crColour = dlg.GetColor();
        else
            nMessage = CPN_SELENDCANCEL;

        m_bChildWindowVisible = FALSE;
    } 
#endif


    if (nMessage == CPN_SELENDCANCEL)
        m_crColour = m_crInitialColour;

    m_pParent->SendMessage(nMessage, (WPARAM) m_crColour, 0);
    
    // Kill focus bug fixed by Martin Wawrusch
    if (!m_bChildWindowVisible)
        DestroyWindow();
}

void CColourPopup::DrawCell(CDC* pDC, int nIndex)
{
    // For the Custom Text area
    if (m_strCustomText.GetLength() && nIndex == CUSTOM_BOX_VALUE)
    {
        // The extent of the actual text button
        CRect TextButtonRect = m_CustomTextRect;
        TextButtonRect.top += 2*m_nMargin;

        // Fill background
        pDC->FillSolidRect(TextButtonRect, ::GetSysColor(COLOR_3DFACE));

        // Draw horizontal line
        pDC->FillSolidRect(m_CustomTextRect.left+2*m_nMargin, m_CustomTextRect.top,
                           m_CustomTextRect.Width()-4*m_nMargin, 1, ::GetSysColor(COLOR_3DSHADOW));
        pDC->FillSolidRect(m_CustomTextRect.left+2*m_nMargin, m_CustomTextRect.top+1,
                           m_CustomTextRect.Width()-4*m_nMargin, 1, ::GetSysColor(COLOR_3DHILIGHT));

        TextButtonRect.DeflateRect(1,1);

        // fill background
        if (m_nChosenColourSel == nIndex && m_nCurrentSel != nIndex)
            pDC->FillSolidRect(TextButtonRect, ::GetSysColor(COLOR_3DLIGHT));
        else
            pDC->FillSolidRect(TextButtonRect, ::GetSysColor(COLOR_3DFACE));

        // Draw button
        if (m_nCurrentSel == nIndex) 
            pDC->DrawEdge(TextButtonRect, BDR_RAISEDINNER, BF_RECT);
        else if (m_nChosenColourSel == nIndex)
            pDC->DrawEdge(TextButtonRect, BDR_SUNKENOUTER, BF_RECT);

        // Draw custom text
        CFont *pOldFont = (CFont*) pDC->SelectObject(&m_Font);
        pDC->SetBkMode(TRANSPARENT);
        pDC->DrawText(m_strCustomText, TextButtonRect, DT_CENTER | DT_VCENTER | DT_SINGLELINE);
        pDC->SelectObject(pOldFont);

        return;
    }        

    // For the Default Text area
    if (m_strDefaultText.GetLength() && nIndex == DEFAULT_BOX_VALUE)
    {
        // Fill background
        pDC->FillSolidRect(m_DefaultTextRect, ::GetSysColor(COLOR_3DFACE));

        // The extent of the actual text button
        CRect TextButtonRect = m_DefaultTextRect;
        TextButtonRect.DeflateRect(1,1);

        // fill background
        if (m_nChosenColourSel == nIndex && m_nCurrentSel != nIndex)
            pDC->FillSolidRect(TextButtonRect, ::GetSysColor(COLOR_3DLIGHT));
        else
            pDC->FillSolidRect(TextButtonRect, ::GetSysColor(COLOR_3DFACE));

        // Draw thin line around text
        CRect LineRect = TextButtonRect;
        LineRect.DeflateRect(2*m_nMargin,2*m_nMargin);
        CPen pen(PS_SOLID, 1, ::GetSysColor(COLOR_3DSHADOW));
        CPen* pOldPen = pDC->SelectObject(&pen);
        pDC->SelectStockObject(NULL_BRUSH);
        pDC->Rectangle(LineRect);
        pDC->SelectObject(pOldPen);

        // Draw button
        if (m_nCurrentSel == nIndex) 
            pDC->DrawEdge(TextButtonRect, BDR_RAISEDINNER, BF_RECT);
        else if (m_nChosenColourSel == nIndex)
            pDC->DrawEdge(TextButtonRect, BDR_SUNKENOUTER, BF_RECT);

        // Draw custom text
        CFont *pOldFont = (CFont*) pDC->SelectObject(&m_Font);
        pDC->SetBkMode(TRANSPARENT);
        pDC->DrawText(m_strDefaultText, TextButtonRect, DT_CENTER | DT_VCENTER | DT_SINGLELINE);
        pDC->SelectObject(pOldFont);

        return;
    }        

    CRect rect;
    if (!GetCellRect(nIndex, rect)) return;

    // Select and realize the palette
    CPalette* pOldPalette = NULL;
    if (pDC->GetDeviceCaps(RASTERCAPS) & RC_PALETTE)
    {
        pOldPalette = pDC->SelectPalette(&m_Palette, FALSE);
        pDC->RealizePalette();
    }

    // fill background
    if (m_nChosenColourSel == nIndex && m_nCurrentSel != nIndex)
        pDC->FillSolidRect(rect, ::GetSysColor(COLOR_3DHILIGHT));
    else
        pDC->FillSolidRect(rect, ::GetSysColor(COLOR_3DFACE));

    // Draw button
    if (m_nCurrentSel == nIndex) 
        pDC->DrawEdge(rect, BDR_RAISEDINNER, BF_RECT);
    else if (m_nChosenColourSel == nIndex)
        pDC->DrawEdge(rect, BDR_SUNKENOUTER, BF_RECT);

    CBrush brush(PALETTERGB(GetRValue(GetColour(nIndex)), 
                            GetGValue(GetColour(nIndex)), 
                            GetBValue(GetColour(nIndex)) ));
    CPen   pen;
    pen.CreatePen(PS_SOLID, 1, ::GetSysColor(COLOR_3DSHADOW));

    CBrush* pOldBrush = (CBrush*) pDC->SelectObject(&brush);
    CPen*   pOldPen   = (CPen*)   pDC->SelectObject(&pen);

    // Draw the cell colour
    rect.DeflateRect(m_nMargin+1, m_nMargin+1);
    pDC->Rectangle(rect);

    // restore DC and cleanup
    pDC->SelectObject(pOldBrush);
    pDC->SelectObject(pOldPen);
    brush.DeleteObject();
    pen.DeleteObject();

    if (pOldPalette && pDC->GetDeviceCaps(RASTERCAPS) & RC_PALETTE)
        pDC->SelectPalette(pOldPalette, FALSE);
}

BOOL CColourPopup::OnQueryNewPalette() 
{
    Invalidate();    
    return CWnd::OnQueryNewPalette();
}

void CColourPopup::OnPaletteChanged(CWnd* pFocusWnd) 
{
    CWnd::OnPaletteChanged(pFocusWnd);

    if (pFocusWnd->GetSafeHwnd() != GetSafeHwnd())
        Invalidate();
}

void CColourPopup::OnKillFocus(CWnd* pNewWnd) 
{
	CWnd::OnKillFocus(pNewWnd);

    ReleaseCapture();
    //DestroyWindow(); - causes crash when Custom colour dialog appears.
}