dccg.cpp

Wxpython Implemented on Windows CE, Source code

    delete m_graphicContext ;
}

void wxDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask )
{
    wxCHECK_RET( Ok(), wxT("wxDC(cg)::DoDrawBitmap - invalid DC") );
    wxCHECK_RET( bmp.Ok(), wxT("wxDC(cg)::DoDrawBitmap - invalid bitmap") );

    wxCoord xx = XLOG2DEVMAC(x);
    wxCoord yy = YLOG2DEVMAC(y);
    wxCoord w = bmp.GetWidth();
    wxCoord h = bmp.GetHeight();
    wxCoord ww = XLOG2DEVREL(w);
    wxCoord hh = YLOG2DEVREL(h);

    CGContextRef cg = ((wxMacCGContext*)(m_graphicContext))->GetNativeContext() ;
    CGImageRef image = (CGImageRef)( bmp.CGImageCreate() ) ;
    HIRect r = CGRectMake( xx , yy , ww , hh ) ;
    HIViewDrawCGImage( cg , &r , image ) ;
    CGImageRelease( image ) ;
}

void wxDC::DoDrawIcon( const wxIcon &icon, wxCoord x, wxCoord y )
{
    wxCHECK_RET( Ok(), wxT("wxDC(cg)::DoDrawIcon - invalid DC") );
    wxCHECK_RET( icon.Ok(), wxT("wxDC(cg)::DoDrawIcon - invalid icon") );

    wxCoord xx = XLOG2DEVMAC(x);
    wxCoord yy = YLOG2DEVMAC(y);
    wxCoord w = icon.GetWidth();
    wxCoord h = icon.GetHeight();
    wxCoord ww = XLOG2DEVREL(w);
    wxCoord hh = YLOG2DEVREL(h);

    CGContextRef cg = ((wxMacCGContext*)(m_graphicContext))->GetNativeContext() ;
    CGRect r = CGRectMake( 00 , 00 , ww , hh ) ;
    CGContextSaveGState( cg );
    CGContextTranslateCTM( cg, xx , yy + hh );
    CGContextScaleCTM( cg, 1, -1 );
    PlotIconRefInContext( cg , &r , kAlignNone , kTransformNone ,
        NULL , kPlotIconRefNormalFlags , MAC_WXHICON( icon.GetHICON() ) ) ;
    CGContextRestoreGState( cg ) ;
}

void wxDC::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
{
    wxCHECK_RET( Ok(), wxT("wxDC(cg)::DoSetClippingRegion - invalid DC") );

    wxCoord xx, yy, ww, hh;
    xx = XLOG2DEVMAC(x);
    yy = YLOG2DEVMAC(y);
    ww = XLOG2DEVREL(width);
    hh = YLOG2DEVREL(height);

    CGContextRef cgContext = ((wxMacCGContext*)(m_graphicContext))->GetNativeContext() ;
    CGRect clipRect = CGRectMake( xx , yy , ww, hh ) ;
    CGContextClipToRect( cgContext , clipRect ) ;

//    SetRectRgn( (RgnHandle) m_macCurrentClipRgn , xx , yy , xx + ww , yy + hh ) ;
//    SectRgn( (RgnHandle) m_macCurrentClipRgn , (RgnHandle) m_macBoundaryClipRgn , (RgnHandle) m_macCurrentClipRgn ) ;

    if ( m_clipping )
    {
        m_clipX1 = wxMax( m_clipX1, xx );
        m_clipY1 = wxMax( m_clipY1, yy );
        m_clipX2 = wxMin( m_clipX2, (xx + ww) );
        m_clipY2 = wxMin( m_clipY2, (yy + hh) );
    }
    else
    {
        m_clipping = true;

        m_clipX1 = xx;
        m_clipY1 = yy;
        m_clipX2 = xx + ww;
        m_clipY2 = yy + hh;
    }

    // TODO: as soon as we don't reset the context for each operation anymore
    // we have to update the context as well
}

void wxDC::DoSetClippingRegionAsRegion( const wxRegion &region )
{
    wxCHECK_RET( Ok(), wxT("wxDC(cg)::DoSetClippingRegionAsRegion - invalid DC") );

    if (region.Empty())
    {
        DestroyClippingRegion();
        return;
    }

    wxCoord x, y, w, h;
    region.GetBox( x, y, w, h );
    wxCoord xx, yy, ww, hh;
    xx = XLOG2DEVMAC(x);
    yy = YLOG2DEVMAC(y);
    ww = XLOG2DEVREL(w);
    hh = YLOG2DEVREL(h);

    // if we have a scaling that we cannot map onto native regions
    // we must use the box
    if ( ww != w || hh != h )
    {
        wxDC::DoSetClippingRegion( x, y, w, h );
    }
    else
    {
#if 0
        CopyRgn( (RgnHandle) region.GetWXHRGN() , (RgnHandle) m_macCurrentClipRgn ) ;
        if ( xx != x || yy != y )
            OffsetRgn( (RgnHandle) m_macCurrentClipRgn , xx - x , yy - y ) ;
        SectRgn( (RgnHandle)m_macCurrentClipRgn , (RgnHandle)m_macBoundaryClipRgn , (RgnHandle)m_macCurrentClipRgn ) ;
#endif

        if ( m_clipping )
        {
            m_clipX1 = wxMax( m_clipX1, xx );
            m_clipY1 = wxMax( m_clipY1, yy );
            m_clipX2 = wxMin( m_clipX2, (xx + ww) );
            m_clipY2 = wxMin( m_clipY2, (yy + hh) );
        }
        else
        {
            m_clipping = true;

            m_clipX1 = xx;
            m_clipY1 = yy;
            m_clipX2 = xx + ww;
            m_clipY2 = yy + hh;
        }
    }
}

void wxDC::DestroyClippingRegion()
{
//    CopyRgn( (RgnHandle) m_macBoundaryClipRgn , (RgnHandle) m_macCurrentClipRgn ) ;

    CGContextRef cgContext = ((wxMacCGContext*)(m_graphicContext))->GetNativeContext() ;
    CGContextRestoreGState( cgContext );
    CGContextSaveGState( cgContext );

    m_graphicContext->SetPen( m_pen ) ;
    m_graphicContext->SetBrush( m_brush ) ;

    m_clipping = false;
}

void wxDC::DoGetSizeMM( int* width, int* height ) const
{
    int w = 0, h = 0;

    GetSize( &w, &h );
    if (width)
        *width = long( double(w) / (m_scaleX * m_mm_to_pix_x) );
    if (height)
        *height = long( double(h) / (m_scaleY * m_mm_to_pix_y) );
}

void wxDC::SetTextForeground( const wxColour &col )
{
    wxCHECK_RET( Ok(), wxT("wxDC(cg)::SetTextForeground - invalid DC") );

    if ( col != m_textForegroundColour )
    {
        m_textForegroundColour = col;
        MacInstallFont() ;
    }
}

void wxDC::SetTextBackground( const wxColour &col )
{
    wxCHECK_RET( Ok(), wxT("wxDC(cg)::SetTextBackground - invalid DC") );

    m_textBackgroundColour = col;
}

void wxDC::SetMapMode( int mode )
{
    switch (mode)
    {
    case wxMM_TWIPS:
        SetLogicalScale( twips2mm * m_mm_to_pix_x, twips2mm * m_mm_to_pix_y );
        break;

    case wxMM_POINTS:
        SetLogicalScale( pt2mm * m_mm_to_pix_x, pt2mm * m_mm_to_pix_y );
        break;

    case wxMM_METRIC:
        SetLogicalScale( m_mm_to_pix_x, m_mm_to_pix_y );
        break;

    case wxMM_LOMETRIC:
        SetLogicalScale( m_mm_to_pix_x / 10.0, m_mm_to_pix_y / 10.0 );
        break;

    case wxMM_TEXT:
    default:
        SetLogicalScale( 1.0, 1.0 );
        break;
    }

    if (mode != wxMM_TEXT)
    {
        m_needComputeScaleX =
        m_needComputeScaleY = true;
    }
}

void wxDC::SetUserScale( double x, double y )
{
    // allow negative ? -> no
    m_userScaleX = x;
    m_userScaleY = y;
    ComputeScaleAndOrigin();
}

void wxDC::SetLogicalScale( double x, double y )
{
    // allow negative ?
    m_logicalScaleX = x;
    m_logicalScaleY = y;
    ComputeScaleAndOrigin();
}

void wxDC::SetLogicalOrigin( wxCoord x, wxCoord y )
{
    m_logicalOriginX = x * m_signX;   // is this still correct ?
    m_logicalOriginY = y * m_signY;
    ComputeScaleAndOrigin();
}

void wxDC::SetDeviceOrigin( wxCoord x, wxCoord y )
{
    m_externalDeviceOriginX = x;
    m_externalDeviceOriginY = y;
    ComputeScaleAndOrigin();
}

void wxDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
{
    m_signX = (xLeftRight ?  1 : -1);
    m_signY = (yBottomUp ? -1 :  1);
    ComputeScaleAndOrigin();
}

wxSize wxDC::GetPPI() const
{
    return wxSize(72, 72);
}

int wxDC::GetDepth() const
{
    return 32;
}

void wxDC::ComputeScaleAndOrigin()
{
    // CMB: copy scale to see if it changes
    double origScaleX = m_scaleX;
    double origScaleY = m_scaleY;
    m_scaleX = m_logicalScaleX * m_userScaleX;
    m_scaleY = m_logicalScaleY * m_userScaleY;
    m_deviceOriginX = m_externalDeviceOriginX;
    m_deviceOriginY = m_externalDeviceOriginY;

    // CMB: if scale has changed call SetPen to recalulate the line width
    if (m_scaleX != origScaleX || m_scaleY != origScaleY)
    {
        // this is a bit artificial, but we need to force wxDC to think
        // the pen has changed
        wxPen pen( GetPen() );

        m_pen = wxNullPen;
        SetPen( pen );
    }
}

void wxDC::SetPalette( const wxPalette& palette )
{
}

void wxDC::SetBackgroundMode( int mode )
{
    m_backgroundMode = mode ;
}

void wxDC::SetFont( const wxFont &font )
{
    m_font = font;
    MacInstallFont() ;
}

void wxDC::SetPen( const wxPen &pen )
{
    if ( m_pen == pen )
        return ;

    m_pen = pen;
    if ( m_graphicContext )
    {
        if ( m_pen.GetStyle() == wxSOLID || m_pen.GetStyle() == wxTRANSPARENT )
        {
            m_graphicContext->SetPen( m_pen ) ;
        }
        else
        {
            // we have to compensate for moved device origins etc. otherwise patterned pens are standing still
            // eg when using a wxScrollWindow and scrolling around
            CGContextRef cgContext = ((wxMacCGContext*)(m_graphicContext))->GetNativeContext() ;
            int origX = XLOG2DEVMAC( 0 ) ;
            int origY = YLOG2DEVMAC( 0 ) ;
            CGContextTranslateCTM( cgContext, origX, origY );
            m_graphicContext->SetPen( m_pen ) ;
            CGContextTranslateCTM( cgContext, -origX, -origY );
        }
    }
}

void wxDC::SetBrush( const wxBrush &brush )
{
    if (m_brush == brush)
        return;

    m_brush = brush;
    if ( m_graphicContext )
    {
        if ( brush.GetStyle() == wxSOLID || brush.GetStyle() == wxTRANSPARENT )
        {
            m_graphicContext->SetBrush( m_brush ) ;
        }
        else
        {
            // we have to compensate for moved device origins etc. otherwise patterned brushes are standing still
            // eg when using a wxScrollWindow and scrolling around
            CGContextRef cgContext = ((wxMacCGContext*)(m_graphicContext))->GetNativeContext() ;
            int origX = XLOG2DEVMAC(0) ;
            int origY = YLOG2DEVMAC(0) ;
            CGContextTranslateCTM( cgContext, origX, origY );
            m_graphicContext->SetBrush( m_brush ) ;
            CGContextTranslateCTM( cgContext, -origX, -origY );
        }
    }
}

void wxDC::SetBackground( const wxBrush &brush )
{
    if (m_backgroundBrush == brush)
        return;

    m_backgroundBrush = brush;
    if (!m_backgroundBrush.Ok())
        return;
}

void wxDC::SetLogicalFunction( int function )
{
    if (m_logicalFunction == function)
        return;

    m_logicalFunction = function ;
#if wxMAC_USE_CORE_GRAPHICS_BLEND_MODES
    CGContextRef cgContext = ((wxMacCGContext*)(m_graphicContext))->GetNativeContext() ;
    if ( m_logicalFunction == wxCOPY )
        CGContextSetBlendMode( cgContext, kCGBlendModeNormal ) ;
    else if ( m_logicalFunction == wxINVERT )
        CGContextSetBlendMode( cgContext, kCGBlendModeExclusion ) ;
    else
        CGContextSetBlendMode( cgContext, kCGBlendModeNormal ) ;
#endif
}

extern bool wxDoFloodFill(wxDC *dc, wxCoord x, wxCoord y,
                          const wxColour & col, int style);

bool wxDC::DoFloodFill(wxCoord x, wxCoord y,
                       const wxColour& col, int style)
{
    return wxDoFloodFill(this, x, y, col, style);
}

bool wxDC::DoGetPixel( wxCoord x, wxCoord y, wxColour *col ) const
{
    wxCHECK_MSG( Ok(), false, wxT("wxDC(cg)::DoGetPixel - invalid DC") );

    wxMacPortSaver helper((CGrafPtr)m_macPort) ;
    RGBColor colour;

    // NB: GetCPixel is a deprecated QD call, and a slow one at that
    GetCPixel(
        XLOG2DEVMAC(x) + m_macLocalOriginInPort.x - m_macLocalOrigin.x,
        YLOG2DEVMAC(y) + m_macLocalOriginInPort.y - m_macLocalOrigin.y, &colour );

    // convert from Mac colour to wx
    col->Set( colour.red >> 8, colour.green >> 8, colour.blue >> 8 );

    return true ;
}

void wxDC::DoDrawLine( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2 )
{
    wxCHECK_RET( Ok(), wxT("wxDC(cg)::DoDrawLine - invalid DC") );

#if !wxMAC_USE_CORE_GRAPHICS_BLEND_MODES
    if ( m_logicalFunction != wxCOPY )
        return ;
#endif

    wxCoord xx1 = XLOG2DEVMAC(x1) ;
    wxCoord yy1 = YLOG2DEVMAC(y1) ;
    wxCoord xx2 = XLOG2DEVMAC(x2) ;
    wxCoord yy2 = YLOG2DEVMAC(y2) ;

    wxGraphicPath* path = m_graphicContext->CreatePath() ;
    path->MoveToPoint( xx1, yy1 ) ;
    path->AddLineToPoint( xx2 , yy2 ) ;
    path->CloseSubpath() ;
    m_graphicContext->StrokePath( path ) ;
    delete path ;

    CalcBoundingBox(x1, y1);