/// <summary>
/// Default Constructor
/// </summary>
public ZedGraphControl()
{
InitializeComponent();
// These commands do nothing, but they get rid of the compiler warnings for
// unused events
bool b = MouseDown == null || MouseUp == null || MouseMove == null;
// Link in these events from the base class, since we disable them from this class.
base.MouseDown += new System.Windows.Forms.MouseEventHandler( this.ZedGraphControl_MouseDown );
base.MouseUp += new System.Windows.Forms.MouseEventHandler( this.ZedGraphControl_MouseUp );
base.MouseMove += new System.Windows.Forms.MouseEventHandler( this.ZedGraphControl_MouseMove );
//this.MouseWheel += new System.Windows.Forms.MouseEventHandler( this.ZedGraphControl_MouseWheel );
// Use double-buffering for flicker-free updating:
SetStyle( ControlStyles.UserPaint | ControlStyles.AllPaintingInWmPaint
| ControlStyles.DoubleBuffer | ControlStyles.ResizeRedraw, true );
//isTransparentBackground = false;
//SetStyle( ControlStyles.Opaque, false );
SetStyle( ControlStyles.SupportsTransparentBackColor, true );
//this.BackColor = Color.Transparent;
Rectangle rect = new Rectangle( 0, 0, this.Size.Width, this.Size.Height );
_masterPane = new MasterPane( "", rect );
_masterPane.Margin.All = 0;
_masterPane.Title.IsVisible = false;
string titleStr = Properties.Resources.Zedgraph_title_def;
string xStr = Properties.Resources.Zedgraph_x_title_def;
string yStr = Properties.Resources.Zedgraph_y_title_def;
//GraphPane graphPane = new GraphPane( rect, "Title", "X Axis", "Y Axis" );
GraphPane graphPane = new GraphPane( rect, titleStr, xStr, yStr );
using ( Graphics g = this.CreateGraphics() )
{
graphPane.AxisChange( g );
//g.Dispose();
}
_masterPane.Add( graphPane );
this.hScrollBar1.Minimum = 0;
this.hScrollBar1.Maximum = 100;
this.hScrollBar1.Value = 0;
this.vScrollBar1.Minimum = 0;
this.vScrollBar1.Maximum = 100;
this.vScrollBar1.Value = 0;
_xScrollRange = new ScrollRange( true );
_yScrollRangeList = new ScrollRangeList();
_y2ScrollRangeList = new ScrollRangeList();
_yScrollRangeList.Add( new ScrollRange( true ) );
_y2ScrollRangeList.Add( new ScrollRange( false ) );
_zoomState = null;
_zoomStateStack = new ZoomStateStack();
}
/// <summary>
/// Zoom a specified pane in or out according to the specified zoom fraction.
/// </summary>
/// <remarks>
/// The zoom will occur on the <see cref="XAxis" />, <see cref="YAxis" />, and
/// <see cref="Y2Axis" /> only if the corresponding flag, <see cref="IsEnableHZoom" /> or
/// <see cref="IsEnableVZoom" />, is true. Note that if there are multiple Y or Y2 axes, all of
/// them will be zoomed.
/// </remarks>
/// <param name="pane">The <see cref="GraphPane" /> instance to be zoomed.</param>
/// <param name="zoomFraction">The fraction by which to zoom, less than 1 to zoom in, greater than
/// 1 to zoom out. For example, 0.9 will zoom in such that the scale is 90% of what it was
/// originally.</param>
/// <param name="centerPt">The screen position about which the zoom will be centered. This
/// value is only used if <see paramref="isZoomOnCenter" /> is true.
/// </param>
/// <param name="isZoomOnCenter">true to cause the zoom to be centered on the point
/// <see paramref="centerPt" />, false to center on the <see cref="Chart.Rect" />.
/// </param>
/// <param name="isRefresh">true to force a refresh of the control, false to leave it unrefreshed</param>
protected void ZoomPane( GraphPane pane, double zoomFraction, PointF centerPt,
bool isZoomOnCenter, bool isRefresh )
{
double x;
double x2;
double[] y;
double[] y2;
pane.ReverseTransform( centerPt, out x, out x2, out y, out y2 );
if ( _isEnableHZoom )
{
ZoomScale( pane.XAxis, zoomFraction, x, isZoomOnCenter );
ZoomScale( pane.X2Axis, zoomFraction, x2, isZoomOnCenter );
}
if ( _isEnableVZoom )
{
for ( int i = 0; i < pane.YAxisList.Count; i++ )
ZoomScale( pane.YAxisList[i], zoomFraction, y[i], isZoomOnCenter );
for ( int i = 0; i < pane.Y2AxisList.Count; i++ )
ZoomScale( pane.Y2AxisList[i], zoomFraction, y2[i], isZoomOnCenter );
}
using ( Graphics g = this.CreateGraphics() )
{
pane.AxisChange( g );
//g.Dispose();
}
this.SetScroll( this.hScrollBar1, pane.XAxis, _xScrollRange.Min, _xScrollRange.Max );
this.SetScroll( this.vScrollBar1, pane.YAxis, _yScrollRangeList[0].Min,
_yScrollRangeList[0].Max );
if ( isRefresh )
Refresh();
}
/// <summary>
/// Restore the scale ranging to automatic mode, and recalculate the
/// <see cref="Axis"/> scale ranges
/// </summary>
/// <param name="pane">
/// A reference to the <see cref="GraphPane"/> object that is the parent or
/// owner of this object.
/// </param>
/// <param name="g">
/// A graphic device object to be drawn into. This is normally e.Graphics from the
/// PaintEventArgs argument to the Paint() method.
/// </param>
/// <seealso cref="ZedGraph.Scale.MinAuto"/>
/// <seealso cref="ZedGraph.Scale.MaxAuto"/>
/// <seealso cref="ZedGraph.Scale.MajorStepAuto"/>
/// <seealso cref="ZedGraph.Scale.MagAuto"/>
/// <seealso cref="ZedGraph.Scale.FormatAuto"/>
public void ResetAutoScale( GraphPane pane, Graphics g )
{
_scale._minAuto = true;
_scale._maxAuto = true;
_scale._majorStepAuto = true;
_scale._minorStepAuto = true;
_crossAuto = true;
_scale._magAuto = true;
//this.numDecAuto = true;
_scale._formatAuto = true;
pane.AxisChange( g );
}
