public RectangleF GetLabelBounds(TextObj textObj, GraphPane graphPane, Graphics graphics)
{
SizeF size;
lock (_textBoxSizes)
{
var label = new Label {Text = textObj.Text, FontSize = textObj.FontSpec.Size};
if (!_textBoxSizes.TryGetValue(label, out size))
{
const float scaleFactor = 1.0f;
// This is a really expensive call, so we're caching its result across threads.
var coords = textObj.FontSpec.GetBox(
graphics, textObj.Text, 0, 0,
textObj.Location.AlignH, textObj.Location.AlignV, scaleFactor, new SizeF());
// Turn four points into a size.
var min = coords[0];
var max = min;
for (int i = 1; i < coords.Length; i++)
{
var point = coords[i];
if (min.X > point.X)
min.X = point.X;
if (min.Y > point.Y)
min.Y = point.Y;
if (max.X < point.X)
max.X = point.X;
if (max.Y < point.Y)
max.Y = point.Y;
}
size = new SizeF(max.X - min.X, max.Y - min.Y);
// Cache the result.
_textBoxSizes[label] = size;
}
}
PointF pix = textObj.Location.Transform(graphPane);
return new RectangleF(pix, size);
}
private bool Equals(Label other)
{
return string.Equals(Text, other.Text) && FontSize.Equals(other.FontSize);
}
/// <summary>
/// Copy constructor
/// </summary>
/// <param name="rhs">the <see cref="Label" /> instance to be copied.</param>
public Label(Label rhs)
{
if (rhs._text != null)
_text = (string) rhs._text.Clone();
else
_text = string.Empty;
_isVisible = rhs._isVisible;
if (rhs._fontSpec != null)
_fontSpec = rhs._fontSpec.Clone();
else
_fontSpec = null;
}
/// <summary>
/// Constructor for deserializing objects
/// </summary>
/// <param name="info">A <see cref="SerializationInfo"/> instance that defines the serialized data
/// </param>
/// <param name="context">A <see cref="StreamingContext"/> instance that contains the serialized data
/// </param>
protected CurveItem( SerializationInfo info, StreamingContext context )
{
// The schema value is just a file version parameter. You can use it to make future versions
// backwards compatible as new member variables are added to classes
int sch = info.GetInt32( "schema" );
_label = (Label) info.GetValue( "label", typeof(Label) );
_isY2Axis = info.GetBoolean( "isY2Axis" );
if ( sch >= 11 )
_isX2Axis = info.GetBoolean( "isX2Axis" );
else
_isX2Axis = false;
_isVisible = info.GetBoolean( "isVisible" );
_isOverrideOrdinal = info.GetBoolean( "isOverrideOrdinal" );
// Data Points are always stored as a PointPairList, regardless of the
// actual original type (which could be anything that supports IPointList).
_points = (PointPairList) info.GetValue( "points", typeof(PointPairList) );
Tag = info.GetValue( "Tag", typeof(object) );
_yAxisIndex = info.GetInt32( "yAxisIndex" );
_link = (Link) info.GetValue( "link", typeof(Link) );
}
/// <summary>
/// The Copy Constructor
/// </summary>
/// <param name="rhs">The CurveItem object from which to copy</param>
public CurveItem( CurveItem rhs )
{
_label = rhs._label.Clone();
_isY2Axis = rhs.IsY2Axis;
_isX2Axis = rhs.IsX2Axis;
_isVisible = rhs.IsVisible;
_isOverrideOrdinal = rhs._isOverrideOrdinal;
_yAxisIndex = rhs._yAxisIndex;
if ( rhs.Tag is ICloneable )
this.Tag = ((ICloneable) rhs.Tag).Clone();
else
this.Tag = rhs.Tag;
_points = (IPointList) rhs.Points.Clone();
_link = rhs._link.Clone();
}
/// <summary>
/// Internal initialization routine thats sets some initial values to defaults.
/// </summary>
/// <param name="label">A string label (legend entry) for this curve</param>
private void Init( string label )
{
_label = new Label( label, null );
_isY2Axis = false;
_isX2Axis = false;
_isVisible = true;
_isOverrideOrdinal = false;
this.Tag = null;
_yAxisIndex = 0;
_link = new Link();
}
/// <summary>
/// Local dispose method
/// </summary>
/// <param name="bDisposing">if disposing is required</param>
protected virtual void Dispose(bool bDisposing)
{
if (!m_bDisposed)
{
if (bDisposing)
{
if (_label != null)
{
_label.Dispose();
_label = null;
}
}
m_bDisposed = true;
}
}