protected override void OnPaintBackground(PaintEventArgs e)
{
FetchDisplayTextEventArgs eArgs = new FetchDisplayTextEventArgs(-1, ItemState.None);
OnFetchDisplayInfo(eArgs);
Brush b_brush = brushes.GetBrush(eArgs.Colors.BackgroundColor);
e.Graphics.FillRectangle(b_brush, e.ClipRectangle);
}
protected override void OnPaintBackground(PaintEventArgs e)
{
FetchInfoToDislayEventArgs eArgs = new FetchInfoToDislayEventArgs(-1);
OnFetchInfoToDislay(eArgs);
e.Graphics.FillRectangle(brushes.GetBrush(eArgs.Colors.BackgroundColor), ClientRectangle);
if (show_border)
{
ControlPaint.DrawBorder3D
(e.Graphics,
ClientRectangle);
}
}
void MakePen()
{
SolidColorBrush brush = BrushCache.GetBrush(Colour);
pen = new Pen(brush, Thickness);
pen.Freeze();
}
public SolidColorBrush GetBrush(string name)
{
InitAliasColorMappings();
var mapping = _aliasToColorMapping[name];
return(BrushCache.GetBrush(mapping.Color));
}
public NodeControl()
{
InitializeComponent();
// set the default handler for adding edges
edgeAddingHandler = delegate(NodeBase from, NodeBase to)
{
EdgeBase edge = new Edge(from, to);
myCanvas.AddEdge(edge);
};
newEdgePen = new Pen(BrushCache.GetBrush(Colors.White), 3);
newEdgePen.Freeze();
marqueePen = new Pen(BrushCache.GetBrush(Colors.White), 3);
marqueePen.Freeze();
marqueeFill = BrushCache.GetBrush(Color.FromArgb(50, 255, 255, 255));
ResetView();
}
public object?Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
if (value == null)
{
return(null);
}
// For a more sophisticated converter, check also the targetType and react accordingly..
if (value is Color color)
{
return(BrushCache.GetBrush(color));
}
// Could support more source types if wish
Type type = value.GetType();
throw new InvalidOperationException("Unsupported type [" + type.Name + "]");
}
void ShowWatermark()
{
if (string.IsNullOrEmpty(Text) && !string.IsNullOrEmpty(Watermark))
{
isWatermarked = true;
//save the existing binding so it can be restored
textBinding = BindingOperations.GetBinding(this, TextProperty);
//blank out the existing binding so we can throw in our Watermark
BindingOperations.ClearBinding(this, TextProperty);
//set the signature watermark gray
Foreground = BrushCache.GetBrush(Colors.LightGray);
//display our watermark text
Text = Watermark;
}
}
public SolidColorBrush GetBrush(string name)
{
InitAliasColorMappings();
if (string.IsNullOrEmpty(name))
{
// Default color for example the unused space in knowledge loss
return(DefaultDrawingPrimitives.DefaultBrush);
}
if (_aliasToColorMapping.ContainsKey(name) is false)
{
// A developer name is not known! This should not happen.
Debug.WriteLine($"No color mapping found for developer {name}");
return(Brushes.Black);
}
var mapping = _aliasToColorMapping[name];
return(BrushCache.GetBrush(mapping.Color));
}
public MyCanvas()
{
IsHitTestVisible = false;
TransformGroup transforms = new TransformGroup();
transforms.Children.Add(translate);
transforms.Children.Add(scale);
//RenderTransformOrigin = new Point(0.5, 0.5);
RenderTransform = transforms;
quadTree = new QuadTree();
Physics = new ForceDirectedPhysics();
whiteBrush = BrushCache.GetBrush(Colors.White);
fontColour = BrushCache.GetBrush(Colors.White);
if (DesignerProperties.GetIsInDesignMode(this))
{
return;
}
DispatcherTimer timer = new DispatcherTimer(DispatcherPriority.Render);
timer.Interval = TimeSpan.FromMilliseconds(16);
timer.Tick += timer_Tick;
timer.Start();
Thread physicsThread = new Thread(RunPhysics);
physicsThread.IsBackground = true;
//physicsThread.Start();
SizeChanged += MyCanvas_SizeChanged;
}
private void UpdateText()
{
formattedText = new FormattedText("text!", CultureInfo.CurrentCulture, FlowDirection.LeftToRight, new Typeface("Helvetica"), 12, BrushCache.GetBrush(Colors.White));
}
protected override void OnColourChanged()
{
brush = BrushCache.GetBrush(Colour);
}
static GraphItem()
{
highlightBrush = BrushCache.GetBrush(Color.FromArgb(150, 255, 255, 0));
}