/// <summary>
/// Rendering method used by the print context menu items
/// </summary>
/// <param name="sender">The applicable <see cref="PrintDocument" />.</param>
/// <param name="e">A <see cref="PrintPageEventArgs" /> instance providing
/// page bounds, margins, and a Graphics instance for this printed output.
/// </param>
private void Graph_PrintPage(object sender, PrintPageEventArgs e)
{
PrintDocument pd = sender as PrintDocument;
MasterPane mPane = this.MasterPane;
bool[] isPenSave = new bool[mPane.PaneList.Count + 1];
bool[] isFontSave = new bool[mPane.PaneList.Count + 1];
isPenSave[0] = mPane.IsPenWidthScaled;
isFontSave[0] = mPane.IsFontsScaled;
for (int i = 0; i < mPane.PaneList.Count; i++)
{
isPenSave[i + 1] = mPane[i].IsPenWidthScaled;
isFontSave[i + 1] = mPane[i].IsFontsScaled;
if (_isPrintScaleAll)
{
mPane[i].IsPenWidthScaled = true;
mPane[i].IsFontsScaled = true;
}
}
RectangleF saveRect = mPane.Rect;
SizeF newSize = mPane.Rect.Size;
if (_isPrintFillPage && _isPrintKeepAspectRatio)
{
float xRatio = (float)e.MarginBounds.Width / (float)newSize.Width;
float yRatio = (float)e.MarginBounds.Height / (float)newSize.Height;
float ratio = Math.Min(xRatio, yRatio);
newSize.Width *= ratio;
newSize.Height *= ratio;
}
else if (_isPrintFillPage)
{
newSize = e.MarginBounds.Size;
}
mPane.ReSize(e.Graphics, new RectangleF(e.MarginBounds.Left,
e.MarginBounds.Top, newSize.Width, newSize.Height));
mPane.Draw(e.Graphics);
using (Graphics g = this.CreateGraphics())
{
mPane.ReSize(g, saveRect);
//g.Dispose();
}
mPane.IsPenWidthScaled = isPenSave[0];
mPane.IsFontsScaled = isFontSave[0];
for (int i = 0; i < mPane.PaneList.Count; i++)
{
mPane[i].IsPenWidthScaled = isPenSave[i + 1];
mPane[i].IsFontsScaled = isFontSave[i + 1];
}
}
// Thread t = null;
//DrawingThread dt = null;
/*
*
* /// <summary>
* ///
* /// </summary>
* /// <param name="dtdobj"></param>
* public void DoDrawingThread( object dtdobj )
* {
* try
* {
* DrawingThreadData dtd = (DrawingThreadData) dtdobj;
*
* if ( dtd._g != null && dtd._masterPane != null )
* dtd._masterPane.Draw( dtd._g );
*
* // else
* // {
* // using ( Graphics g2 = CreateGraphics() )
* // _masterPane.Draw( g2 );
* // }
* }
* catch
* {
* }
* }
*/
/// <summary>
/// Called when the control has been resized.
/// </summary>
/// <param name="sender">
/// A reference to the control that has been resized.
/// </param>
/// <param name="e">
/// An EventArgs object.
/// </param>
protected void ZedGraphControl_ReSize(object sender, System.EventArgs e)
{
lock (this)
{
if (BeenDisposed || _masterPane == null)
{
return;
}
Size newSize = this.Size;
if (_isShowHScrollBar)
{
hScrollBar1.Visible = true;
newSize.Height -= this.hScrollBar1.Size.Height;
hScrollBar1.Location = new Point(0, newSize.Height);
hScrollBar1.Size = new Size(newSize.Width, hScrollBar1.Height);
}
else
{
hScrollBar1.Visible = false;
}
if (_isShowVScrollBar)
{
vScrollBar1.Visible = true;
newSize.Width -= this.vScrollBar1.Size.Width;
vScrollBar1.Location = new Point(newSize.Width, 0);
vScrollBar1.Size = new Size(vScrollBar1.Width, newSize.Height);
}
else
{
vScrollBar1.Visible = false;
}
using (Graphics g = this.CreateGraphics())
{
_masterPane.ReSize(g, new RectangleF(0, 0, newSize.Width, newSize.Height));
//g.Dispose();
}
this.Invalidate();
}
}
/// <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 )
{
ZedGraphWebControlEventHandler handler;
handler = (ZedGraphWebControlEventHandler)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 )
{
ZedGraphWeb.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>
///
/// </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;
}
