renderer.cpp

很牛的GUI源码wxWidgets-2.8.0.zip 可在多种平台下运行.

            (short) (headerRect.origin.y + headerRect.size.height),
            (short) (headerRect.origin.x + headerRect.size.width)
        };

        RgnHandle updateRgn = NewRgn();
        RectRgn( updateRgn, &r );
        HIViewSetNeedsDisplayInRegion( (HIViewRef) win->GetHandle(), updateRgn, true );
        DisposeRgn( updateRgn );
    }
    else
    {
        CGContextRef cgContext;

#if wxMAC_USE_CORE_GRAPHICS
        cgContext = (CGContextRef) dc.GetGraphicsContext()->GetNativeContext();
#else
        Rect bounds;

        GetPortBounds( (CGrafPtr) dc.m_macPort, &bounds );
        QDBeginCGContext( (CGrafPtr) dc.m_macPort, &cgContext );

        CGContextTranslateCTM( cgContext, 0, bounds.bottom - bounds.top );
        CGContextScaleCTM( cgContext, 1, -1 );

        HIShapeReplacePathInCGContext( HIShapeCreateWithQDRgn( (RgnHandle) dc.m_macCurrentClipRgn ), cgContext );
        CGContextClip( cgContext );
        HIViewConvertRect( &headerRect, (HIViewRef) win->GetHandle(), (HIViewRef) win->MacGetTopLevelWindow()->GetHandle() );
#endif

    {
            HIThemeButtonDrawInfo drawInfo;
            HIRect labelRect;

            memset( &drawInfo, 0, sizeof(drawInfo) );
            drawInfo.version = 0;
            drawInfo.kind = kThemeDisclosureButton;
            drawInfo.state = (flags & wxCONTROL_DISABLED) ? kThemeStateInactive : kThemeStateActive;
            // Apple mailing list posts say to use the arrow adornment constants, but those don't work.
            // We need to set the value using the 'old' DrawThemeButton constants instead.
            drawInfo.value = (flags & wxCONTROL_EXPANDED) ? kThemeDisclosureDown : kThemeDisclosureRight;
            drawInfo.adornment = kThemeAdornmentNone; 

            HIThemeDrawButton( &headerRect, &drawInfo, cgContext, kHIThemeOrientationNormal, &labelRect );
            
        }

#if wxMAC_USE_CORE_GRAPHICS
#else
        QDEndCGContext( (CGrafPtr) dc.m_macPort, &cgContext );
#endif
    }
}

void wxRendererMac::DrawSplitterSash( wxWindow *win,
    wxDC& dc,
    const wxSize& size,
    wxCoord position,
    wxOrientation orient,
    int WXUNUSED(flags) )
{
    bool hasMetal = win->MacGetTopLevelWindow()->MacGetMetalAppearance();
    SInt32 height;
    GetThemeMetric( kThemeMetricSmallPaneSplitterHeight, &height );
    HIRect splitterRect;
    if (orient == wxVERTICAL)
        splitterRect = CGRectMake( position, 0, height, size.y );
    else
        splitterRect = CGRectMake( 0, position, size.x, height );

#if !wxMAC_USE_CORE_GRAPHICS
    HIViewConvertRect(
        &splitterRect,
        (HIViewRef) win->GetHandle(),
        (HIViewRef) win->MacGetTopLevelWindow()->GetHandle() );
#endif

    // under compositing we should only draw when called by the OS, otherwise just issue a redraw command
    // strange redraw errors occur if we don't do this

    if ( !dc.IsKindOf( CLASSINFO( wxPaintDC ) ) )
    {
        Rect r =
        {
            (short) splitterRect.origin.y,
            (short) splitterRect.origin.x,
            (short) (splitterRect.origin.y + splitterRect.size.height),
            (short) (splitterRect.origin.x + splitterRect.size.width)
        };

        RgnHandle updateRgn = NewRgn();
        RectRgn( updateRgn, &r );
        HIViewSetNeedsDisplayInRegion( (HIViewRef) win->GetHandle(), updateRgn, true );
        DisposeRgn( updateRgn );
    }
    else
    {
        CGContextRef cgContext;

#if wxMAC_USE_CORE_GRAPHICS
        cgContext = (CGContextRef) dc.GetGraphicsContext()->GetNativeContext();
#else
        Rect bounds;
        GetPortBounds( (CGrafPtr) dc.m_macPort, &bounds );
        QDBeginCGContext( (CGrafPtr) dc.m_macPort, &cgContext );
        CGContextTranslateCTM( cgContext, 0, bounds.bottom - bounds.top );
        CGContextScaleCTM( cgContext, 1, -1 );
#endif

        HIThemeSplitterDrawInfo drawInfo;
        drawInfo.version = 0;
        drawInfo.state = kThemeStateActive;
        drawInfo.adornment = hasMetal ? kHIThemeSplitterAdornmentMetal : kHIThemeSplitterAdornmentNone;
        HIThemeDrawPaneSplitter( &splitterRect, &drawInfo, cgContext, kHIThemeOrientationNormal );

#if wxMAC_USE_CORE_GRAPHICS
#else
        QDEndCGContext( (CGrafPtr) dc.m_macPort, &cgContext );
#endif
    }
}

void
wxRendererMac::DrawItemSelectionRect(wxWindow *win,
                                     wxDC& dc,
                                     const wxRect& rect,
                                     int flags )
{
    RGBColor selColor; 
    if (flags & wxCONTROL_SELECTED)
    {
        if (flags & wxCONTROL_FOCUSED)
            GetThemeBrushAsColor(kThemeBrushAlternatePrimaryHighlightColor, 32, true, &selColor);
        else
            GetThemeBrushAsColor(kThemeBrushSecondaryHighlightColor, 32, true, &selColor);
    }
    
    wxBrush selBrush = wxBrush( wxColour( selColor.red, selColor.green, selColor.blue ), wxSOLID );

    dc.SetPen( *wxTRANSPARENT_PEN );
    dc.SetBrush( selBrush );
    dc.DrawRectangle( rect );
}


void
wxRendererMac::DrawMacThemeButton(wxWindow *win,
                                  wxDC& dc,
                                  const wxRect& rect,
                                  int flags,
                                  int kind,
                                  int adornment)
{
#if !wxMAC_USE_CORE_GRAPHICS
    const wxCoord x = dc.LogicalToDeviceX(rect.x);
    const wxCoord y = dc.LogicalToDeviceY(rect.y);
    const wxCoord w = dc.LogicalToDeviceXRel(rect.width);
    const wxCoord h = dc.LogicalToDeviceYRel(rect.height);
#else
    // now the wxGCDC is using native transformations
    const wxCoord x = rect.x;
    const wxCoord y = rect.y;
    const wxCoord w = rect.width;
    const wxCoord h = rect.height;
#endif

    dc.SetBrush( *wxTRANSPARENT_BRUSH );

    HIRect headerRect = CGRectMake( x, y, w, h );
    if ( !dc.IsKindOf( CLASSINFO( wxPaintDC ) ) )
    {
        Rect r =
        {
            (short) headerRect.origin.y, (short) headerRect.origin.x,
            (short) (headerRect.origin.y + headerRect.size.height),
            (short) (headerRect.origin.x + headerRect.size.width)
        };

        RgnHandle updateRgn = NewRgn();
        RectRgn( updateRgn, &r );
        HIViewSetNeedsDisplayInRegion( (HIViewRef) win->GetHandle(), updateRgn, true );
        DisposeRgn( updateRgn );
    }
    else
    {
        CGContextRef cgContext;

#if wxMAC_USE_CORE_GRAPHICS
        cgContext = (CGContextRef) dc.GetGraphicsContext()->GetNativeContext();
#else
        Rect bounds;

        GetPortBounds( (CGrafPtr) dc.m_macPort, &bounds );
        QDBeginCGContext( (CGrafPtr) dc.m_macPort, &cgContext );

        CGContextTranslateCTM( cgContext, 0, bounds.bottom - bounds.top );
        CGContextScaleCTM( cgContext, 1, -1 );

        HIShapeReplacePathInCGContext( HIShapeCreateWithQDRgn( (RgnHandle) dc.m_macCurrentClipRgn ), cgContext );
        CGContextClip( cgContext );
        HIViewConvertRect( &headerRect, (HIViewRef) win->GetHandle(), (HIViewRef) win->MacGetTopLevelWindow()->GetHandle() );
#endif

        {
            HIThemeButtonDrawInfo drawInfo;
            HIRect labelRect;

            memset( &drawInfo, 0, sizeof(drawInfo) );
            drawInfo.version = 0;
            drawInfo.kind = kind;
            drawInfo.state = (flags & wxCONTROL_DISABLED) ? kThemeStateInactive : kThemeStateActive;
            drawInfo.value = (flags & wxCONTROL_SELECTED) ? kThemeButtonOn : kThemeButtonOff;
            drawInfo.adornment = adornment;

            HIThemeDrawButton( &headerRect, &drawInfo, cgContext, kHIThemeOrientationNormal, &labelRect );
        }

#if wxMAC_USE_CORE_GRAPHICS
#else
        QDEndCGContext( (CGrafPtr) dc.m_macPort, &cgContext );
#endif
    }
}


void
wxRendererMac::DrawComboBoxDropButton(wxWindow *win,
                              wxDC& dc,
                              const wxRect& rect,
                              int flags)
{
    DrawMacThemeButton(win, dc, rect, flags,
                       kThemeArrowButton, kThemeAdornmentArrowDownArrow);
}
    
void
wxRendererMac::DrawPushButton(wxWindow *win,
                              wxDC& dc,
                              const wxRect& rect,
                              int flags)
{
    DrawMacThemeButton(win, dc, rect, flags,
                       kThemeBevelButton, kThemeAdornmentNone);
}