odcombo.cpp

这是一个GPS相关的程序

    butHeight -= btnBorder*2;

    // Adjust button height
    if ( m_btnHei < 0 )
        butHeight += m_btnHei;
    else if ( m_btnHei > 0 )
        butHeight = m_btnHei;

    // Use size of normal bitmap if...
    //   It is larger
    //   OR
    //   button width is set to default and blank button bg is not drawn
    if ( m_bmpNormal.Ok() )
    {
        int bmpReqWidth = m_bmpNormal.GetWidth();
        int bmpReqHeight = m_bmpNormal.GetHeight();

        // If drawing blank button background, we need to add some margin.
        if ( m_blankButtonBg )
        {
            bmpReqWidth += BMP_BUTTON_MARGIN*2;
            bmpReqHeight += BMP_BUTTON_MARGIN*2;
        }

        if ( butWidth < bmpReqWidth || ( m_btnWid == 0 && !m_blankButtonBg ) )
            butWidth = bmpReqWidth;
        if ( butHeight < bmpReqHeight || ( m_btnHei == 0 && !m_blankButtonBg ) )
            butHeight = bmpReqHeight;

        // Need to fix height?
        if ( (sz.y-(customBorder*2)) < butHeight && btnWidth == 0 )
        {
            int newY = butHeight+(customBorder*2);
            SetClientSize(-1,newY);
            sz.y = newY;
        }
    }

    int butAreaWid = butWidth + (m_btnSpacingX*2);

    m_btnSize.x = butWidth;
    m_btnSize.y = butHeight;

    m_btnArea.x = ( m_btnSide==wxRIGHT ? sz.x - butAreaWid - btnBorder : btnBorder );
    m_btnArea.y = btnBorder;
    m_btnArea.width = butAreaWid;
    m_btnArea.height = sz.y - (btnBorder*2);

    if ( m_bmpNormal.Ok() || m_btnArea.width != butWidth || m_btnArea.height != butHeight )
        m_iFlags |= wxPGCC_IFLAG_HAS_NONSTANDARD_BUTTON;
    else
        m_iFlags &= ~wxPGCC_IFLAG_HAS_NONSTANDARD_BUTTON;

    m_tcArea.x = ( m_btnSide==wxRIGHT ? 0 : butAreaWid ) + customBorder;
    m_tcArea.y = customBorder;
    m_tcArea.width = sz.x - butAreaWid - (customBorder*2);
    m_tcArea.height = sz.y - (customBorder*2);

/*
    if ( m_text )
    {
        ::wxMessageBox(wxString::Format(wxT("ButtonArea (%i,%i,%i,%i)\n"),m_btnArea.x,m_btnArea.y,m_btnArea.width,m_btnArea.height) +
                       wxString::Format(wxT("TextCtrlArea (%i,%i,%i,%i)"),m_tcArea.x,m_tcArea.y,m_tcArea.width,m_tcArea.height));
    }
*/
}

void wxPGComboControlBase::PositionTextCtrl( int textCtrlXAdjust, int textCtrlYAdjust )
{
    if ( !m_text )
        return;

    wxSize sz = GetClientSize();
    int customBorder = m_widthCustomBorder;

    if ( (m_text->GetWindowStyleFlag() & wxBORDER_MASK) == wxNO_BORDER )
    {
        // Centre textctrl
        int tcSizeY = m_text->GetBestSize().y;
        int diff = sz.y - tcSizeY;
        int y = textCtrlYAdjust + (diff/2);

        if ( y < customBorder )
            y = customBorder;

        m_text->SetSize( m_tcArea.x + m_widthCustomPaint + m_absIndent + textCtrlXAdjust,
                         y,
                         m_tcArea.width - g_comboMargin -
                         (textCtrlXAdjust + m_widthCustomPaint + m_absIndent),
                         -1 );

        // Make sure textctrl doesn't exceed the bottom custom border
        wxSize tsz = m_text->GetSize();
        diff = (y + tsz.y) - (sz.y - customBorder);
        if ( diff >= 0 )
        {
            tsz.y = tsz.y - diff - 1;
            m_text->SetSize(tsz);
        }
    }
    else
    {
        m_text->SetSize( m_tcArea.x,
                         0,
                         sz.x - m_btnArea.x - m_widthCustomPaint - customBorder,
                         sz.y );
    }
}

wxSize wxPGComboControlBase::DoGetBestSize() const
{
    wxSize sizeText(150,0);

    if ( m_text )
        sizeText = m_text->GetBestSize();

    // TODO: Better method to calculate close-to-native control height.

    int fhei;
    if ( m_font.Ok() )
        fhei = (m_font.GetPointSize()*2) + 5;
    else if ( wxNORMAL_FONT->Ok() )
        fhei = (wxNORMAL_FONT->GetPointSize()*2) + 5;
    else
        fhei = sizeText.y + 4;

    // Need to force height to accomodate bitmap?
    int btnSizeY = m_btnSize.y;
    if ( m_bmpNormal.Ok() && fhei < btnSizeY )
        fhei = btnSizeY;

    // Control height doesn't depend on border
/*
    // Add border
    int border = m_windowStyle & wxBORDER_MASK;
    if ( border == wxSIMPLE_BORDER )
        fhei += 2;
    else if ( border == wxNO_BORDER )
        fhei += (m_widthCustomBorder*2);
    else
        // Sunken etc.
        fhei += 4;
*/

    // Final adjustments
#ifdef __WXGTK__
    fhei += 1;
#endif

    wxSize ret(sizeText.x + g_comboMargin + DEFAULT_DROPBUTTON_WIDTH,
               fhei);

    CacheBestSize(ret);
    return ret;
}

void wxPGComboControlBase::DoMoveWindow(int x, int y, int width, int height)
{
    // SetSize is called last in create, so it marks the end of creation
    m_iFlags |= wxPGCC_IFLAG_CREATED;

    wxControl::DoMoveWindow(x, y, width, height);
}

void wxPGComboControlBase::OnSizeEvent( wxSizeEvent& event )
{
    if ( !IsCreated() )
        return;

    // defined by actual wxComboControls
    OnResize();

    event.Skip();
}

// ----------------------------------------------------------------------------
// standard operations
// ----------------------------------------------------------------------------

bool wxPGComboControlBase::Enable(bool enable)
{
    if ( !wxControl::Enable(enable) )
        return false;

    if ( m_btn )
        m_btn->Enable(enable);
    if ( m_text )
        m_text->Enable(enable);

    return true;
}

bool wxPGComboControlBase::Show(bool show)
{
    if ( !wxControl::Show(show) )
        return false;

    if (m_btn)
        m_btn->Show(show);

    if (m_text)
        m_text->Show(show);

    return true;
}

bool wxPGComboControlBase::SetFont ( const wxFont& font )
{
    if ( !wxControl::SetFont(font) )
        return false;

    if (m_text)
        m_text->SetFont(font);

    return true;
}

#if wxUSE_TOOLTIPS
void wxPGComboControlBase::DoSetToolTip(wxToolTip *tooltip)
{
    wxControl::DoSetToolTip(tooltip);

    // Set tool tip for button and text box
    if ( tooltip )
    {
        const wxString &tip = tooltip->GetTip();
        if ( m_text ) m_text->SetToolTip(tip);
        if ( m_btn ) m_btn->SetToolTip(tip);
    }
    else
    {
        if ( m_text ) m_text->SetToolTip( (wxToolTip*) NULL );
        if ( m_btn ) m_btn->SetToolTip( (wxToolTip*) NULL );
    }
}
#endif // wxUSE_TOOLTIPS

// ----------------------------------------------------------------------------
// painting
// ----------------------------------------------------------------------------

// draw focus background on area in a way typical on platform
void wxPGComboControlBase::DrawFocusBackground( wxDC& dc, const wxRect& rect, int flags )
{
    wxSize sz = GetClientSize();
    bool isEnabled;
    bool doDrawFocusRect; // also selected

    // For smaller size control (and for disabled background) use less spacing
    int focusSpacingX;
    int focusSpacingY;

    if ( !(flags & wxCONTROL_ISSUBMENU) )
    {
        // Drawing control
        isEnabled = IsEnabled();
        doDrawFocusRect = ShouldDrawFocus();

        // Windows-style: for smaller size control (and for disabled background) use less spacing
        //focusSpacingX = isEnabled ? 2 : 1;
        focusSpacingX = 1;
        focusSpacingY = sz.y > (GetCharHeight()+500) && isEnabled ? 2 : 1;
    }
    else
    {
        // Drawing a list item
        isEnabled = true; // they are never disabled
        doDrawFocusRect = flags & wxCONTROL_SELECTED ? true : false;

        focusSpacingX = 0;
        focusSpacingY = 0;
    }

    // Set the background sub-rectangle for selection, disabled etc
    wxRect selRect(rect);
    selRect.y += focusSpacingY;
    selRect.height -= (focusSpacingY*2);
    int wcp = 0;

    if ( !(flags & wxCONTROL_ISSUBMENU) )
        wcp += m_widthCustomPaint;

    selRect.x += wcp + focusSpacingX;
    selRect.width -= wcp + (focusSpacingX*2);

    wxColour bgCol;
    bool doDrawSelRect = true;

    if ( isEnabled )
    {
        // If popup is hidden and this control is focused,
        // then draw the focus-indicator (selbgcolor background etc.).
        if ( doDrawFocusRect )
        {
            dc.SetTextForeground( wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHTTEXT) );
            bgCol = wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHT);
        }
        else
        {
            dc.SetTextForeground( wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT) );
            bgCol = GetBackgroundColour();
            doDrawSelRect = false;
        }
    }
    else
    {
        dc.SetTextForeground( wxSystemSettings::GetColour(wxSYS_COLOUR_GRAYTEXT) );
        bgCol = GetBackgroundColour();
    }

    dc.SetBrush( bgCol );
    if ( doDrawSelRect )
    {
        dc.SetPen( bgCol );
        dc.DrawRectangle( selRect );
    }
}

void wxPGComboControlBase::DrawButton( wxDC& dc, const wxRect& rect, int flags )
{
    int drawState = m_btnState;

    if ( (m_iFlags & wxPGCC_BUTTON_STAYS_DOWN) &&
         IsPopupShown() )
        drawState |= wxCONTROL_PRESSED;

    wxRect drawRect(rect.x+m_btnSpacingX,
                    rect.y+((rect.height-m_btnSize.y)/2),
                    m_btnSize.x,
                    m_btnSize.y);

    // Make sure area is not larger than the control
    if ( drawRect.y < rect.y )
        drawRect.y = rect.y;
    if ( drawRect.height > rect.height )
        drawRect.height = rect.height;

    bool enabled = IsEnabled();

    if ( !enabled )
        drawState |= wxCONTROL_DISABLED;

    if ( !m_bmpNormal.Ok() )
    {
        if ( flags & Button_BitmapOnly )
            return;

        // Need to clear button background even if m_btn is present
        if ( flags & Button_PaintBackground )
        {
            wxColour bgCol;

            if ( m_iFlags & wxPGCC_IFLAG_BUTTON_OUTSIDE )
                bgCol = GetParent()->GetBackgroundColour();
            else
                bgCol = GetBackgroundColour();

            dc.SetBrush(bgCol);
            dc.SetPen(bgCol);
            dc.DrawRectangle(rect);
        }

        // Draw standard button
        wxRendererNative::Get().DrawComboBoxDropButton(this,
                                                       dc,
                                                       drawRect,
                                                       drawState);
    }
    else
    {
        // Draw bitmap

        wxBitmap* pBmp;

        if ( !enabled )
            pBmp = &m_bmpDisabled;
        else if ( m_btnState & wxCONTROL_PRESSED )
            pBmp = &m_bmpPressed;
        else if ( m_btnState & wxCONTROL_CURRENT )
            pBmp = &m_bmpHover;
        else
            pBmp = &m_bmpNormal;

#if wxCHECK_VERSION(2, 7, 0)
        if ( m_blankButtonBg )
        {
            // If using blank button background, we need to clear its background
            // with button face colour instead of colour for rest of the control.
            if ( flags & Button_PaintBackground )
            {
                wxColour bgCol = GetParent()->GetBackgroundColour(); //wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
                //wxColour bgCol = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
                dc.SetPen(bgCol);
                dc.SetBrush(bgCol);
                dc.DrawRectangle(rect);
            }

            if ( !(flags & Button_BitmapOnly) )
            {
                wxRendererNative::Get().DrawPushButton(this,
                                                       dc,
                                                       drawRect,
                                                       drawState);
            }
        }
        else
#endif
        {
            // Need to clear button background even if m_btn is present
            // (assume non-button background was cleared just before this call so brushes are good)
            if ( flags & Button_PaintBackground )
                dc.DrawRectangle(rect);
        }

        // Draw bitmap centered in drawRect
        dc.DrawBitmap(*pBmp,
                      drawRect.x + (drawRect.width-pBmp->GetWidth())/2,
                      drawRect.y + (drawRect.height-pBmp->GetHeight())/2,
                      true);
    }
}

void wxPGComboControlBase::RecalcAndRefresh()
{
    if ( IsCreated() )
    {
        wxSizeEvent evt(GetSize(),GetId());
        GetEventHandler()->ProcessEvent(evt);
        Refresh();
    }
}

bool wxPGComboControlBase::OnDrawListItem( wxDC& WXUNUSED(dc),
                                                 const wxRect& WXUNUSED(rect),
                                                 int WXUNUSED(item),
                                                 int WXUNUSED(flags) )
{
    return false; // signals caller to make default drawing
}

wxCoord wxPGComboControlBase::OnMeasureListItem( int WXUNUSED(item) )
{
    return -1; // signals caller to use default
}

wxCoord wxPGComboControlBase::OnMeasureListItemWidth( int WXUNUSED(item) )
{
    return -1; // signals caller to use default
}

// ----------------------------------------------------------------------------
// miscellaneous event handlers
// ----------------------------------------------------------------------------

void wxPGComboControlBase::OnTextCtrlEvent(wxCommandEvent& event)
{
    // Change event id and relay it forward
    event.SetId(GetId());
    event.Skip();
}

// call if cursor is on button area or mouse is captured for the button
bool wxPGComboControlBase::HandleButtonMouseEvent( wxMouseEvent& event,
                                                   int flags )
{