public Types.Rectangle GetBounds( Renderers.Renderer renderer )
{
if( _bounds == null )
{
_bounds = CalculateBounds( renderer );
if( _bounds == null )
{
throw new InvalidOperationException();
}
}
return _bounds;
}
public BoundsMarker( Types.Rectangle rectangle )
{
_rectangle = rectangle;
}
internal PrimitivesVisitor( GdiPlusRenderer renderer, Graphics g, Types.Rectangle clip )
{
_renderer = renderer;
_graphics = g;
_clip = clip;
}
private bool InClip( Primitives.VisualItem item )
{
if( _clip == null )
{
return true;
}
PointF tl = new PointF( (float) _clip.Left, (float) _clip.Top );
PointF br = new PointF( (float) _clip.Right, (float) _clip.Bottom );
PointF[] pts = new PointF[] { tl, br };
_graphics.TransformPoints( CoordinateSpace.World, CoordinateSpace.Device, pts );
Types.Rectangle clip = new Types.Rectangle( pts[0].X, pts[0].Y, pts[1].X - pts[0].X, pts[1].Y - pts[0].Y );
return Types.Rectangle.Overlap( item.GetBounds( _renderer ), clip );
}
public Primitives.Container Create( IData data, Settings settings )
{
if( data == null )
{
throw new ArgumentNullException( "data" );
}
if( settings == null )
{
throw new ArgumentNullException( "settings" );
}
if( data.ColumnCount < 2 )
{
throw new ArgumentException( "Line data must have at least two columns.", "data" );
}
Primitives.Container container = new Primitives.Container();
Primitives.BoundsMarker bounds = new Primitives.BoundsMarker( new Types.Rectangle( 0, 0, settings.Width, settings.Height ) );
bounds.Style.Add( "GraphContainer" );
container.AddBack( bounds );
Primitives.Container lines = new Primitives.Container();
double minHorzData = double.MaxValue;
double maxHorzData = double.MinValue;
for( int i = 0; i < data.RowCount; ++i )
{
double v = data[i, 0];
minHorzData = Math.Min( minHorzData, v );
maxHorzData = Math.Max( maxHorzData, v );
}
double minVertData = double.MaxValue;
double maxVertData = double.MinValue;
for( int i = 0; i < data.RowCount; ++i )
{
for( int j = 1; j < data.ColumnCount; ++j )
{
double v = data[i, j];
minVertData = Math.Min( minVertData, v );
maxVertData = Math.Max( maxVertData, v );
}
}
if( maxVertData == minVertData )
{
maxVertData = minVertData + 1;
}
double maxExtent = Math.Max( settings.Width, settings.Height);
double textHeight = 2;
double border = 20;
Types.Rectangle visibleArea = new Types.Rectangle( border, border, settings.Width - border * 2, settings.Height - border * 2 - textHeight );
double zero = visibleArea.Bottom + minVertData / (maxVertData - minVertData) * visibleArea.Height;
for( int col = 1; col < data.ColumnCount; ++col )
{
Primitives.Container line = new Primitives.Container();
List<Types.Point> points = new List<Types.Point>();
List<Primitives.Path.Command> pathCommands = new List<Primitives.Path.Command>();
pathCommands.Add( new Primitives.Path.Move( new Types.Point( visibleArea.X, zero ) ) );
for( int row = 0; row < data.RowCount; ++row )
{
double y = data[row, col];
double x = data[row, 0];
x = visibleArea.X + (x - minHorzData) / (maxHorzData - minHorzData) * visibleArea.Width;
y = visibleArea.Bottom - (y - minVertData) / (maxVertData - minVertData) * visibleArea.Height;
Primitives.Path.Command pathCommand = new Primitives.Path.Line( new Types.Point( x, y ) );
pathCommands.Add( pathCommand );
}
pathCommands.Add( new Primitives.Path.Line( new Types.Point( visibleArea.Right, zero ) ) );
pathCommands.Add( new Primitives.Path.Close() );
Primitives.Path path = new Primitives.Path( pathCommands.ToArray() );
path.Style.Add( "GraphPiece" );
path.Style.AddExtra( "RowIndex", (col - 1).ToString() );
path.Style.AddExtra( "RowCount", (data.ColumnCount - 1).ToString() );
line.AddBack( path );
lines.AddBack( line );
}
container.AddBack( lines );
double available = settings.Height - visibleArea.Bottom;
for( int i = 0; i < data.RowCount; ++i )
{
string label = data.GetRowExtra( i, "LABEL", null );
if( label != null )
{
double x = data[i, 0];
x = visibleArea.X + (x - minHorzData) / (maxHorzData - minHorzData) * visibleArea.Width;
Primitives.Text text = new Primitives.Text( label, new Types.Point( x, visibleArea.Bottom + available / 5 ), Primitives.Text.Position.TopCenter );
text.FontSizePoints = textHeight / 2;
text.Style.Add( "GraphText" );
container.AddBack( text );
}
}
return container;
}
internal void DirtyBounds()
{
_bounds = null;
if( Parent != null )
{
Parent.DirtyBounds();
}
}
