/// <summary>
///
/// </summary>
/// <param name="OutputStream"></param>
/// <param name="Format"></param>
/// <param name="bShowTransparency">if true, draw squares instead of leaving the
/// background transparent</param>
/// <remarks>
/// bShowTransparency is set to true in design mode, to false otherwise.
/// </remarks>
protected MasterPane CreateGraph( System.IO.Stream OutputStream, ImageFormat Format,
bool bShowTransparency )
{
RectangleF rect = new RectangleF( 0, 0, this.Width, this.Height );
MasterPane mp = new MasterPane( string.Empty, rect );
mp.Margin.All = 0;
mp.Fill.IsVisible = false;
mp.Border.IsVisible = false;
// create all required panes
//for ( int i = 0; i < this.PaneCount; i++ )
//{
mp.Add( new GraphPane( rect, Title, string.Empty, string.Empty ) );
//}
// create output bitmap container
Bitmap image = new Bitmap( this.Width, this.Height );
using ( Graphics g = Graphics.FromImage( image ) )
{
// Apply layout plan
//mp.SetLayout( this.PaneLayout );
mp.ReSize( g, rect );
// Use callback to gather more settings and data values
OnDrawPane( g, mp );
// Allow designer control of axischange
if ( this.AxisChanged ) mp.AxisChange( g );
// Render the graph to a bitmap
if ( bShowTransparency && mp.Fill.Color.A != 255 )
{
//Show the transparency as white/gray filled squares
// We need to add the resource namespace to its name
//string resourceName = string.Format( "{0}.transparency.png", GetType().Namespace );
string resourceName = "ZedGraph.ZedGraph.transparency.png";
Stream stream = System.Reflection.Assembly.GetExecutingAssembly().GetManifestResourceStream( resourceName );
if ( stream == null )
throw new Exception( "Does the Build Action of the resource " + resourceName + " is set to Embedded Resource ?" );
using ( System.Drawing.Image brushImage = new Bitmap( stream ) )
using ( TextureBrush brush = new TextureBrush( brushImage, WrapMode.Tile ) )
{
g.FillRectangle( brush, 0, 0, this.Width, this.Height );
}
stream.Close();
}
mp.Draw( g );
}
// Stream the graph out
MemoryStream ms = new MemoryStream();
image.Save( ms, Format );
//TODO: provide caching options
ms.WriteTo( OutputStream );
return mp;
}
/// <summary>
/// stub method that passes control for the render event to the the registered
/// event handler.
/// </summary>
protected virtual void OnDrawPane( Graphics g, MasterPane mp )
{
ZeeGraphWebControlEventHandler handler;
handler = (ZeeGraphWebControlEventHandler)Events[_eventRender];
MasterPaneFill.CopyTo( mp.Fill );
MasterPaneBorder.CopyTo( mp.Border );
if ( ( handler == null ) && ( CurveList.Count == 0 ) && ( GraphObjList.Count == 0 ) )
{
// default with the sample graph if no callback provided
foreach ( GraphPane p in mp.PaneList )
{
ZeeGraphWeb.RenderDemo( g, p );
}
}
else
{
foreach ( GraphPane p in mp.PaneList )
{
// Add visual designer influences here - first!!
SetWebProperties( g, p );
// Add DataSource values if available before the callback
PopulateByDataSource( g, p );
//Add Graph Items
AddWebGraphItems( g, p );
}
//TODO: verify callback regression test
// Add custom callback tweeking next
if ( handler != null )
handler( this, g, mp );
// Set the layout according to user preferences
mp.ReSize( g );
}
}
/// <summary>
/// The Copy Constructor - Make a deep-copy clone of this class instance.
/// </summary>
/// <param name="rhs">The <see cref="MasterPane"/> object from which to copy</param>
public MasterPane( MasterPane rhs )
: base(rhs)
{
// copy all the value types
//_paneLayoutMgr = rhs._paneLayoutMgr.Clone();
_innerPaneGap = rhs._innerPaneGap;
_isUniformLegendEntries = rhs._isUniformLegendEntries;
_isCommonScaleFactor = rhs._isCommonScaleFactor;
// Then, fill in all the reference types with deep copies
_paneList = rhs._paneList.Clone();
_paneLayout = rhs._paneLayout;
_countList = rhs._countList;
_isColumnSpecified = rhs._isColumnSpecified;
_prop = rhs._prop;
_isAntiAlias = rhs._isAntiAlias;
}
/// <summary>
/// Generate an ImageMap as Html tags
/// </summary>
/// <param name="masterPane">The source <see cref="MasterPane" /> to be
/// image mapped.</param>
/// <param name="output">An <see cref="HtmlTextWriter" /> instance in which
/// the html tags will be written for the image map.</param>
public void MakeImageMap( MasterPane masterPane, HtmlTextWriter output )
{
string shape;
string coords;
Bitmap image = new Bitmap( 1, 1 );
using ( Graphics g = Graphics.FromImage( image ) )
{
float masterScale = masterPane.CalcScaleFactor();
// Frontmost objects are MasterPane objects with A_InFront
foreach ( GraphObj obj in masterPane.GraphObjList )
{
if ( obj.Link.IsActive && obj.ZOrder == ZOrder.A_InFront )
{
obj.GetCoords( masterPane, g, masterScale, out shape, out coords );
MakeAreaTag( shape, coords, obj.Link.Url, obj.Link.Target,
obj.Link.Title, obj.Link.Tag, output );
}
}
// Now loop over each GraphPane
foreach ( GraphPane pane in masterPane.PaneList )
{
float scaleFactor = pane.CalcScaleFactor();
// Next comes GraphPane GraphObjs in front of data points
foreach ( GraphObj obj in pane.GraphObjList )
{
if ( obj.Link.IsActive && obj.IsInFrontOfData )
{
obj.GetCoords( pane, g, scaleFactor, out shape, out coords );
MakeAreaTag( shape, coords, obj.Link.Url, obj.Link.Target,
obj.Link.Title, obj.Link.Tag, output );
}
}
// Then come the data points (CurveItems)
foreach ( CurveItem curve in pane.CurveList )
{
if ( curve.Link.IsActive && curve.IsVisible )
{
for ( int i=0; i < (curve is PieItem ? 1 : curve.Points.Count); i++ )
{
//if ( curve.GetCoords( pane, i, pane.Rect.Left, pane.Rect.Top, out coords ) )
if ( curve.GetCoords( pane, i, out coords ) )
{
if ( curve is PieItem )
{
MakeAreaTag( "poly", coords, curve.Link.Url,
curve.Link.Target, curve.Link.Title, curve.Link.Tag, output );
// only one point for PieItems
break;
}
else
{
// Add an "?index=4" type tag to the url to indicate which
// point was selected
string url;
if ( curve.Link.Url != string.Empty )
url = curve.Link.MakeCurveItemUrl( pane, curve, i );
else
url = "";
string title = curve.Link.Title;
if ( curve.Points[i].Tag is string )
title = curve.Points[i].Tag as string;
MakeAreaTag( "rect", coords, url,
curve.Link.Target, title, curve.Points[i].Tag, output );
}
}
}
}
}
// Then comes the GraphObjs behind the data points
foreach ( GraphObj obj in pane.GraphObjList )
{
if ( obj.Link.IsActive && !obj.IsInFrontOfData )
{
obj.GetCoords( pane, g, scaleFactor, out shape, out coords );
MakeAreaTag( shape, coords, obj.Link.Url, obj.Link.Target,
obj.Link.Title, obj.Link.Tag, output );
}
}
}
// Hindmost objects are MasterPane objects with !A_InFront
foreach ( GraphObj obj in masterPane.GraphObjList )
{
if ( obj.Link.IsActive && obj.ZOrder != ZOrder.A_InFront )
{
obj.GetCoords( masterPane, g, masterScale, out shape, out coords );
MakeAreaTag( shape, coords, obj.Link.Url, obj.Link.Target,
obj.Link.Title, obj.Link.Tag, output );
}
}
}
}
/// <summary>
/// Mark the <see cref="CurveItem" />'s that are included in the selection list
/// by setting the <see cref="CurveItem.IsSelected" /> property to true.
/// </summary>
/// <param name="master">The <see cref="MasterPane" /> that "owns" the selection list.</param>
public void UpdateSelection( MasterPane master )
{
if ( Count <= 0 )
{
ClearSelection( master );
return;
}
foreach ( GraphPane pane in master.PaneList )
{
foreach ( CurveItem ci in pane.CurveList )
{
//Make it Inactive
ci.IsSelected = false;
}
}
foreach ( CurveItem ci in this )
{
//Make Active
ci.IsSelected = true;
//If it is a line / scatterplot, the selected Curve may be occluded by an unselected Curve
//So, move it to the top of the ZOrder by removing it, and re-adding it.
//Why only do this for Lines? ...Bar and Pie Curves are less likely to overlap,
//and adding and removing Pie elements changes thier display order
if ( ci.IsLine )
{
//I don't know how to get a Pane, from a CurveItem, so I can only do it
//if there is one and only one Pane, based on the assumption that the
//Curve's Pane is MasterPane[0]
//If there is only one Pane
if ( master.PaneList.Count == 1 )
{
GraphPane pane = master.PaneList[0];
pane.CurveList.Remove( ci );
pane.CurveList.Insert( 0, ci );
}
}
}
//Send Selection Changed Event
if ( SelectionChangedEvent != null )
SelectionChangedEvent( this, new EventArgs() );
}
/// <summary>
/// Add a <see cref="CurveItem" /> to the selection list.
/// </summary>
/// <param name="master">The <see cref="MasterPane" /> that is the "owner"
/// of the <see cref="CurveItem" />'s.</param>
/// <param name="ci">The <see cref="CurveItem" /> to be added to the list.</param>
public void AddToSelection( MasterPane master, CurveItem ci )
{
if ( this.Contains( ci ) == false )
Add( ci );
UpdateSelection( master );
}
/// <summary>
/// Place a list of <see cref="CurveItem" />'s in the selection list, removing all other
/// items.
/// </summary>
/// <param name="master">The <see cref="MasterPane" /> that is the "owner"
/// of the <see cref="CurveItem" />'s.</param>
/// <param name="ciList">The list of <see cref="CurveItem" /> to be added to the list.</param>
public void Select( MasterPane master, CurveList ciList )
{
//Clear the selection, but don't send the event,
//the event will be sent in "AddToSelection" by calling "UpdateSelection"
ClearSelection( master, false );
AddToSelection( master, ciList );
}
/// <summary>
/// Remove the specified <see cref="CurveItem" /> from the selection list.
/// </summary>
/// <param name="master">The <see cref="MasterPane" /> that is the "owner"
/// of the <see cref="CurveItem" />'s.</param>
/// <param name="ci">The <see cref="CurveItem" /> to be removed from the list.</param>
public void RemoveFromSelection( MasterPane master, CurveItem ci )
{
if ( this.Contains( ci ) )
this.Remove( ci );
UpdateSelection( master );
}
/// <summary>
/// Clear the selection list and optionally trigger a <see cref="SelectionChangedEvent" />.
/// </summary>
/// <param name="master">The <see cref="MasterPane" /> that "owns" the selection list.</param>
/// <param name="sendEvent">true to trigger a <see cref="SelectionChangedEvent" />,
/// false otherwise.</param>
public void ClearSelection( MasterPane master, bool sendEvent )
{
this.Clear();
foreach ( GraphPane pane in master.PaneList )
{
foreach ( CurveItem ci in pane.CurveList )
{
ci.IsSelected = false;
}
}
if ( sendEvent )
{
if ( SelectionChangedEvent != null )
SelectionChangedEvent( this, new EventArgs() );
}
}
/// <summary>
/// Clear the selection list and trigger a <see cref="SelectionChangedEvent" />.
/// </summary>
/// <param name="master">The <see cref="MasterPane" /> that "owns" the selection list.</param>
public void ClearSelection( MasterPane master )
{
ClearSelection( master, true );
}
/// <summary>
/// Add a list of <see cref="CurveItem" />'s to the selection list.
/// </summary>
/// <param name="master">The <see cref="MasterPane" /> that is the "owner"
/// of the <see cref="CurveItem" />'s.</param>
/// <param name="ciList">The list of <see cref="CurveItem" />'s to be added to the list.</param>
public void AddToSelection( MasterPane master, CurveList ciList )
{
foreach ( CurveItem ci in ciList )
{
if ( this.Contains( ci ) == false )
this.Add( ci );
}
UpdateSelection( master );
}
