moel@391: // --------------------------------------------------------------------------------------------------------------------
moel@391: // <copyright file="Plot.cs" company="OxyPlot">
moel@391: //   The MIT License (MIT)
moel@391: //
moel@391: //   Copyright (c) 2012 Oystein Bjorke
moel@391: //
moel@391: //   Permission is hereby granted, free of charge, to any person obtaining a
moel@391: //   copy of this software and associated documentation files (the
moel@391: //   "Software"), to deal in the Software without restriction, including
moel@391: //   without limitation the rights to use, copy, modify, merge, publish,
moel@391: //   distribute, sublicense, and/or sell copies of the Software, and to
moel@391: //   permit persons to whom the Software is furnished to do so, subject to
moel@391: //   the following conditions:
moel@391: //
moel@391: //   The above copyright notice and this permission notice shall be included
moel@391: //   in all copies or substantial portions of the Software.
moel@391: //
moel@391: //   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
moel@391: //   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
moel@391: //   MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
moel@391: //   IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
moel@391: //   CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
moel@391: //   TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
moel@391: //   SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
moel@391: // </copyright>
moel@391: // <summary>
moel@391: //   Represents a control that displays a plot.
moel@391: // </summary>
moel@391: // --------------------------------------------------------------------------------------------------------------------
moel@391: namespace OxyPlot.WindowsForms
moel@391: {
moel@391:     using System;
moel@391:     using System.ComponentModel;
moel@391:     using System.Diagnostics;
moel@391:     using System.Drawing;
moel@391:     using System.Runtime.InteropServices;
moel@391:     using System.Windows.Forms;
moel@391: 
moel@391:     using OxyPlot.Axes;
moel@391:     using OxyPlot.Series;
moel@391: 
moel@391:     /// <summary>
moel@391:     /// Represents a control that displays a plot.
moel@391:     /// </summary>
moel@391:     [Serializable]
moel@391:     public class Plot : Control, IPlotControl
moel@391:     {
moel@391:         /// <summary>
moel@391:         /// The category for the properties of this control.
moel@391:         /// </summary>
moel@391:         private const string OxyPlotCategory = "OxyPlot";
moel@391: 
moel@391:         /// <summary>
moel@391:         /// The invalidate lock.
moel@391:         /// </summary>
moel@391:         private readonly object invalidateLock = new object();
moel@391: 
moel@391:         /// <summary>
moel@391:         /// The model lock.
moel@391:         /// </summary>
moel@391:         private readonly object modelLock = new object();
moel@391: 
moel@391:         /// <summary>
moel@391:         /// The rendering lock.
moel@391:         /// </summary>
moel@391:         private readonly object renderingLock = new object();
moel@391: 
moel@391:         /// <summary>
moel@391:         /// The current model (holding a reference to this plot control).
moel@391:         /// </summary>
moel@391:         [NonSerialized]
moel@391:         private PlotModel currentModel;
moel@391: 
moel@391:         /// <summary>
moel@391:         /// The is model invalidated.
moel@391:         /// </summary>
moel@391:         private bool isModelInvalidated;
moel@391: 
moel@391:         /// <summary>
moel@391:         /// The model.
moel@391:         /// </summary>
moel@391:         private PlotModel model;
moel@391: 
moel@391:         /// <summary>
moel@391:         /// The mouse manipulator.
moel@391:         /// </summary>
moel@391:         [NonSerialized]
moel@391:         private ManipulatorBase mouseManipulator;
moel@391: 
moel@391:         /// <summary>
moel@391:         /// The update data flag.
moel@391:         /// </summary>
moel@391:         private bool updateDataFlag = true;
moel@391: 
moel@391:         /// <summary>
moel@391:         /// The zoom rectangle.
moel@391:         /// </summary>
moel@391:         private Rectangle zoomRectangle;
moel@391: 
moel@391:         /// <summary>
moel@391:         /// The render context.
moel@391:         /// </summary>
moel@391:         private GraphicsRenderContext renderContext;
moel@391: 
moel@391:         /// <summary>
moel@391:         /// Initializes a new instance of the <see cref="Plot"/> class.
moel@391:         /// </summary>
moel@391:         public Plot()
moel@391:         {
moel@391:             this.renderContext = new GraphicsRenderContext();
moel@391: 
moel@391:             // ReSharper disable DoNotCallOverridableMethodsInConstructor
moel@391:             this.DoubleBuffered = true;
moel@391:             // ReSharper restore DoNotCallOverridableMethodsInConstructor
moel@391:             this.KeyboardPanHorizontalStep = 0.1;
moel@391:             this.KeyboardPanVerticalStep = 0.1;
moel@391:             this.PanCursor = Cursors.Hand;
moel@391:             this.ZoomRectangleCursor = Cursors.SizeNWSE;
moel@391:             this.ZoomHorizontalCursor = Cursors.SizeWE;
moel@391:             this.ZoomVerticalCursor = Cursors.SizeNS;
moel@391:         }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// Gets the actual model.
moel@391:         /// </summary>
moel@391:         /// <value> The actual model. </value>
moel@391:         public PlotModel ActualModel
moel@391:         {
moel@391:             get
moel@391:             {
moel@391:                 return this.Model;
moel@391:             }
moel@391:         }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// Gets or sets the keyboard pan horizontal step.
moel@391:         /// </summary>
moel@391:         /// <value> The keyboard pan horizontal step. </value>
moel@391:         [Category(OxyPlotCategory)]
moel@391:         public double KeyboardPanHorizontalStep { get; set; }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// Gets or sets the keyboard pan vertical step.
moel@391:         /// </summary>
moel@391:         /// <value> The keyboard pan vertical step. </value>
moel@391:         [Category(OxyPlotCategory)]
moel@391:         public double KeyboardPanVerticalStep { get; set; }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// Gets or sets the model.
moel@391:         /// </summary>
moel@391:         [Browsable(false)]
moel@391:         [DefaultValue(null)]
moel@391:         [Category(OxyPlotCategory)]
moel@391:         public PlotModel Model
moel@391:         {
moel@391:             get
moel@391:             {
moel@391:                 return this.model;
moel@391:             }
moel@391: 
moel@391:             set
moel@391:             {
moel@391:                 if (this.model != value)
moel@391:                 {
moel@391:                     this.model = value;
moel@391:                     this.OnModelChanged();
moel@391:                 }
moel@391:             }
moel@391:         }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// Gets or sets the pan cursor.
moel@391:         /// </summary>
moel@391:         [Category(OxyPlotCategory)]
moel@391:         public Cursor PanCursor { get; set; }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// Gets or sets the horizontal zoom cursor.
moel@391:         /// </summary>
moel@391:         [Category(OxyPlotCategory)]
moel@391:         public Cursor ZoomHorizontalCursor { get; set; }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// Gets or sets the rectangle zoom cursor.
moel@391:         /// </summary>
moel@391:         [Category(OxyPlotCategory)]
moel@391:         public Cursor ZoomRectangleCursor { get; set; }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// Gets or sets vertical zoom cursor.
moel@391:         /// </summary>
moel@391:         [Category(OxyPlotCategory)]
moel@391:         public Cursor ZoomVerticalCursor { get; set; }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// Get the axes from a point.
moel@391:         /// </summary>
moel@391:         /// <param name="pt">
moel@391:         /// The point.
moel@391:         /// </param>
moel@391:         /// <param name="xaxis">
moel@391:         /// The x axis.
moel@391:         /// </param>
moel@391:         /// <param name="yaxis">
moel@391:         /// The y axis.
moel@391:         /// </param>
moel@391:         public void GetAxesFromPoint(ScreenPoint pt, out Axis xaxis, out Axis yaxis)
moel@391:         {
moel@391:             if (this.Model == null)
moel@391:             {
moel@391:                 xaxis = null;
moel@391:                 yaxis = null;
moel@391:                 return;
moel@391:             }
moel@391: 
moel@391:             this.Model.GetAxesFromPoint(pt, out xaxis, out yaxis);
moel@391:         }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// Get the series from a point.
moel@391:         /// </summary>
moel@391:         /// <param name="pt">
moel@391:         /// The point (screen coordinates).
moel@391:         /// </param>
moel@391:         /// <param name="limit">
moel@391:         /// The limit.
moel@391:         /// </param>
moel@391:         /// <returns>
moel@391:         /// The series.
moel@391:         /// </returns>
moel@391:         public Series GetSeriesFromPoint(ScreenPoint pt, double limit)
moel@391:         {
moel@391:             if (this.Model == null)
moel@391:             {
moel@391:                 return null;
moel@391:             }
moel@391: 
moel@391:             return this.Model.GetSeriesFromPoint(pt, limit);
moel@391:         }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// The hide tracker.
moel@391:         /// </summary>
moel@391:         public void HideTracker()
moel@391:         {
moel@391:         }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// The hide zoom rectangle.
moel@391:         /// </summary>
moel@391:         public void HideZoomRectangle()
moel@391:         {
moel@391:             this.zoomRectangle = Rectangle.Empty;
moel@391:             this.Invalidate();
moel@391:         }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// The invalidate plot.
moel@391:         /// </summary>
moel@391:         /// <param name="updateData">
moel@391:         /// The update data.
moel@391:         /// </param>
moel@391:         public void InvalidatePlot(bool updateData)
moel@391:         {
moel@391:             lock (this.invalidateLock)
moel@391:             {
moel@391:                 this.isModelInvalidated = true;
moel@391:                 this.updateDataFlag = this.updateDataFlag || updateData;
moel@391:             }
moel@391: 
moel@391:             this.Invalidate();
moel@391:         }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// Called when the Model property has been changed.
moel@391:         /// </summary>
moel@391:         public void OnModelChanged()
moel@391:         {
moel@391:             lock (this.modelLock)
moel@391:             {
moel@391:                 if (this.currentModel != null)
moel@391:                 {
moel@391:                     this.currentModel.AttachPlotControl(null);
moel@391:                 }
moel@391: 
moel@391:                 if (this.Model != null)
moel@391:                 {
moel@391:                     if (this.Model.PlotControl != null)
moel@391:                     {
moel@391:                         throw new InvalidOperationException(
moel@391:                             "This PlotModel is already in use by some other plot control.");
moel@391:                     }
moel@391: 
moel@391:                     this.Model.AttachPlotControl(this);
moel@391:                     this.currentModel = this.Model;
moel@391:                 }
moel@391:             }
moel@391: 
moel@391:             this.InvalidatePlot(true);
moel@391:         }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// The pan.
moel@391:         /// </summary>
moel@391:         /// <param name="axis">
moel@391:         /// The axis.
moel@391:         /// </param>
moel@391:         /// <param name="x0">
moel@391:         /// The x 0.
moel@391:         /// </param>
moel@391:         /// <param name="x1">
moel@391:         /// The x 1.
moel@391:         /// </param>
moel@391:         public void Pan(Axis axis, ScreenPoint x0, ScreenPoint x1)
moel@391:         {
moel@391:             axis.Pan(x0, x1);
moel@391:             this.InvalidatePlot(false);
moel@391:         }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// Pans all axes.
moel@391:         /// </summary>
moel@391:         /// <param name="deltax">
moel@391:         /// The horizontal delta.
moel@391:         /// </param>
moel@391:         /// <param name="deltay">
moel@391:         /// The vertical delta.
moel@391:         /// </param>
moel@391:         public void PanAll(double deltax, double deltay)
moel@391:         {
moel@391:             foreach (var a in this.ActualModel.Axes)
moel@391:             {
moel@391:                 a.Pan(a.IsHorizontal() ? deltax : deltay);
moel@391:             }
moel@391: 
moel@391:             this.InvalidatePlot(false);
moel@391:         }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// The refresh plot.
moel@391:         /// </summary>
moel@391:         /// <param name="updateData">
moel@391:         /// The update data.
moel@391:         /// </param>
moel@391:         public void RefreshPlot(bool updateData)
moel@391:         {
moel@391:             lock (this.invalidateLock)
moel@391:             {
moel@391:                 this.isModelInvalidated = true;
moel@391:                 this.updateDataFlag = this.updateDataFlag || updateData;
moel@391:             }
moel@391: 
moel@391:             this.Refresh();
moel@391:         }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// The reset.
moel@391:         /// </summary>
moel@391:         /// <param name="axis">
moel@391:         /// The axis.
moel@391:         /// </param>
moel@391:         public void Reset(Axis axis)
moel@391:         {
moel@391:             axis.Reset();
moel@391:             this.InvalidatePlot(false);
moel@391:         }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// Sets the cursor type.
moel@391:         /// </summary>
moel@391:         /// <param name="cursorType">
moel@391:         /// The cursor type.
moel@391:         /// </param>
moel@391:         public void SetCursorType(CursorType cursorType)
moel@391:         {
moel@391:             switch (cursorType)
moel@391:             {
moel@391:                 case CursorType.Pan:
moel@391:                     this.Cursor = this.PanCursor;
moel@391:                     break;
moel@391:                 case CursorType.ZoomRectangle:
moel@391:                     this.Cursor = this.ZoomRectangleCursor;
moel@391:                     break;
moel@391:                 case CursorType.ZoomHorizontal:
moel@391:                     this.Cursor = this.ZoomHorizontalCursor;
moel@391:                     break;
moel@391:                 case CursorType.ZoomVertical:
moel@391:                     this.Cursor = this.ZoomVerticalCursor;
moel@391:                     break;
moel@391:                 default:
moel@391:                     this.Cursor = Cursors.Arrow;
moel@391:                     break;
moel@391:             }
moel@391:         }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// The show tracker.
moel@391:         /// </summary>
moel@391:         /// <param name="data">
moel@391:         /// The data.
moel@391:         /// </param>
moel@391:         public void ShowTracker(TrackerHitResult data)
moel@391:         {
moel@391:             // not implemented for WindowsForms
moel@391:         }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// The show zoom rectangle.
moel@391:         /// </summary>
moel@391:         /// <param name="r">
moel@391:         /// The r.
moel@391:         /// </param>
moel@391:         public void ShowZoomRectangle(OxyRect r)
moel@391:         {
moel@391:             this.zoomRectangle = new Rectangle((int)r.Left, (int)r.Top, (int)r.Width, (int)r.Height);
moel@391:             this.Invalidate();
moel@391:         }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// The zoom.
moel@391:         /// </summary>
moel@391:         /// <param name="axis">
moel@391:         /// The axis.
moel@391:         /// </param>
moel@391:         /// <param name="p1">
moel@391:         /// The p 1.
moel@391:         /// </param>
moel@391:         /// <param name="p2">
moel@391:         /// The p 2.
moel@391:         /// </param>
moel@391:         public void Zoom(Axis axis, double p1, double p2)
moel@391:         {
moel@391:             axis.Zoom(p1, p2);
moel@391:             this.InvalidatePlot(false);
moel@391:         }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// The zoom all.
moel@391:         /// </summary>
moel@391:         public void ZoomAll()
moel@391:         {
moel@391:             foreach (var a in this.Model.Axes)
moel@391:             {
moel@391:                 a.Reset();
moel@391:             }
moel@391: 
moel@391:             this.InvalidatePlot(false);
moel@391:         }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// Zooms all axes.
moel@391:         /// </summary>
moel@391:         /// <param name="delta">
moel@391:         /// The delta.
moel@391:         /// </param>
moel@391:         public void ZoomAllAxes(double delta)
moel@391:         {
moel@391:             foreach (var a in this.ActualModel.Axes)
moel@391:             {
moel@391:                 this.ZoomAt(a, delta);
moel@391:             }
moel@391: 
moel@391:             this.RefreshPlot(false);
moel@391:         }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// The zoom at.
moel@391:         /// </summary>
moel@391:         /// <param name="axis">
moel@391:         /// The axis.
moel@391:         /// </param>
moel@391:         /// <param name="factor">
moel@391:         /// The factor.
moel@391:         /// </param>
moel@391:         /// <param name="x">
moel@391:         /// The x.
moel@391:         /// </param>
moel@391:         public void ZoomAt(Axis axis, double factor, double x = double.NaN)
moel@391:         {
moel@391:             if (double.IsNaN(x))
moel@391:             {
moel@391:                 double sx = (axis.Transform(axis.ActualMaximum) + axis.Transform(axis.ActualMinimum)) * 0.5;
moel@391:                 x = axis.InverseTransform(sx);
moel@391:             }
moel@391: 
moel@391:             axis.ZoomAt(factor, x);
moel@391:             this.InvalidatePlot(false);
moel@391:         }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// The on mouse down.
moel@391:         /// </summary>
moel@391:         /// <param name="e">
moel@391:         /// The e.
moel@391:         /// </param>
moel@391:         protected override void OnMouseDown(MouseEventArgs e)
moel@391:         {
moel@391:             base.OnMouseDown(e);
moel@391: 
moel@391:             if (this.mouseManipulator != null)
moel@391:             {
moel@391:                 return;
moel@391:             }
moel@391: 
moel@391:             this.Focus();
moel@391:             this.Capture = true;
moel@391: 
moel@391:             if (this.ActualModel != null)
moel@391:             {
moel@391:                 var args = this.CreateMouseEventArgs(e);
moel@391:                 this.ActualModel.HandleMouseDown(this, args);
moel@391:                 if (args.Handled)
moel@391:                 {
moel@391:                     return;
moel@391:                 }
moel@391:             }
moel@391: 
moel@391:             this.mouseManipulator = this.GetManipulator(e);
moel@391: 
moel@391:             if (this.mouseManipulator != null)
moel@391:             {
moel@391:                 this.mouseManipulator.Started(this.CreateManipulationEventArgs(e));
moel@391:             }
moel@391:         }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// The on mouse move.
moel@391:         /// </summary>
moel@391:         /// <param name="e">
moel@391:         /// The e.
moel@391:         /// </param>
moel@391:         protected override void OnMouseMove(MouseEventArgs e)
moel@391:         {
moel@391:             base.OnMouseMove(e);
moel@391: 
moel@391:             if (this.ActualModel != null)
moel@391:             {
moel@391:                 var args = this.CreateMouseEventArgs(e);
moel@391:                 this.ActualModel.HandleMouseMove(this, args);
moel@391:                 if (args.Handled)
moel@391:                 {
moel@391:                     return;
moel@391:                 }
moel@391:             }
moel@391: 
moel@391:             if (this.mouseManipulator != null)
moel@391:             {
moel@391:                 this.mouseManipulator.Delta(this.CreateManipulationEventArgs(e));
moel@391:             }
moel@391:         }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// Raises the <see cref="E:System.Windows.Forms.Control.MouseUp"/> event.
moel@391:         /// </summary>
moel@391:         /// <param name="e">
moel@391:         /// A <see cref="T:System.Windows.Forms.MouseEventArgs"/> that contains the event data.
moel@391:         /// </param>
moel@391:         protected override void OnMouseUp(MouseEventArgs e)
moel@391:         {
moel@391:             base.OnMouseUp(e);
moel@391:             this.Capture = false;
moel@391: 
moel@391:             if (this.ActualModel != null)
moel@391:             {
moel@391:                 var args = this.CreateMouseEventArgs(e);
moel@391:                 this.ActualModel.HandleMouseUp(this, args);
moel@391:                 if (args.Handled)
moel@391:                 {
moel@391:                     return;
moel@391:                 }
moel@391:             }
moel@391: 
moel@391:             if (this.mouseManipulator != null)
moel@391:             {
moel@391:                 this.mouseManipulator.Completed(this.CreateManipulationEventArgs(e));
moel@391:             }
moel@391: 
moel@391:             this.mouseManipulator = null;
moel@391:         }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// Raises the <see cref="E:System.Windows.Forms.Control.MouseWheel"/> event.
moel@391:         /// </summary>
moel@391:         /// <param name="e">
moel@391:         /// A <see cref="T:System.Windows.Forms.MouseEventArgs"/> that contains the event data.
moel@391:         /// </param>
moel@391:         protected override void OnMouseWheel(MouseEventArgs e)
moel@391:         {
moel@391:             base.OnMouseWheel(e);
moel@391:             bool isControlDown = ModifierKeys == Keys.Control;
moel@391:             var m = new ZoomStepManipulator(this, e.Delta * 0.001, isControlDown);
moel@391:             m.Started(new ManipulationEventArgs(e.Location.ToScreenPoint()));
moel@391:         }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// Raises the <see cref="E:System.Windows.Forms.Control.Paint"/> event.
moel@391:         /// </summary>
moel@391:         /// <param name="e">
moel@391:         /// A <see cref="T:System.Windows.Forms.PaintEventArgs"/> that contains the event data.
moel@391:         /// </param>
moel@391:         protected override void OnPaint(PaintEventArgs e)
moel@391:         {
moel@391:             base.OnPaint(e);
moel@391:             try
moel@391:             {
moel@391:                 lock (this.invalidateLock)
moel@391:                 {
moel@391:                     if (this.isModelInvalidated)
moel@391:                     {
moel@391:                         if (this.model != null)
moel@391:                         {
moel@391:                             this.model.Update(this.updateDataFlag);
moel@391:                             this.updateDataFlag = false;
moel@391:                         }
moel@391: 
moel@391:                         this.isModelInvalidated = false;
moel@391:                     }
moel@391:                 }
moel@391: 
moel@391:                 lock (this.renderingLock)
moel@391:                 {
moel@391:                     this.renderContext.SetGraphicsTarget(e.Graphics);
moel@391:                     if (this.model != null)
moel@391:                     {
moel@391:                         this.model.Render(this.renderContext, this.Width, this.Height);
moel@391:                     }
moel@391: 
moel@391:                     if (this.zoomRectangle != Rectangle.Empty)
moel@391:                     {
moel@391:                         using (var zoomBrush = new SolidBrush(Color.FromArgb(0x40, 0xFF, 0xFF, 0x00)))
moel@391:                         using (var zoomPen = new Pen(Color.Black))
moel@391:                         {
moel@391:                             zoomPen.DashPattern = new float[] { 3, 1 };
moel@391:                             e.Graphics.FillRectangle(zoomBrush, this.zoomRectangle);
moel@391:                             e.Graphics.DrawRectangle(zoomPen, this.zoomRectangle);
moel@391:                         }
moel@391:                     }
moel@391:                 }
moel@391:             }
moel@391:             catch (Exception paintException)
moel@391:             {
moel@391:                 var trace = new StackTrace(paintException);
moel@391:                 Debug.WriteLine(paintException);
moel@391:                 Debug.WriteLine(trace);
moel@391:                 using (var font = new Font("Arial", 10))
moel@391:                 {
moel@391:                     e.Graphics.DrawString(
moel@391:                         "OxyPlot paint exception: " + paintException.Message, font, Brushes.Red, 10, 10);
moel@391:                 }
moel@391:             }
moel@391:         }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// Raises the <see cref="E:System.Windows.Forms.Control.PreviewKeyDown"/> event.
moel@391:         /// </summary>
moel@391:         /// <param name="e">
moel@391:         /// A <see cref="T:System.Windows.Forms.PreviewKeyDownEventArgs"/> that contains the event data.
moel@391:         /// </param>
moel@391:         protected override void OnPreviewKeyDown(PreviewKeyDownEventArgs e)
moel@391:         {
moel@391:             base.OnPreviewKeyDown(e);
moel@391:             if (e.KeyCode == Keys.A)
moel@391:             {
moel@391:                 this.ZoomAll();
moel@391:             }
moel@391: 
moel@391:             bool control = (e.Modifiers & Keys.Control) == Keys.Control;
moel@391:             bool alt = (e.Modifiers & Keys.Alt) == Keys.Alt;
moel@391: 
moel@391:             double deltax = 0;
moel@391:             double deltay = 0;
moel@391:             double zoom = 0;
moel@391:             switch (e.KeyCode)
moel@391:             {
moel@391:                 case Keys.Up:
moel@391:                     deltay = -1;
moel@391:                     break;
moel@391:                 case Keys.Down:
moel@391:                     deltay = 1;
moel@391:                     break;
moel@391:                 case Keys.Left:
moel@391:                     deltax = -1;
moel@391:                     break;
moel@391:                 case Keys.Right:
moel@391:                     deltax = 1;
moel@391:                     break;
moel@391:                 case Keys.Add:
moel@391:                 case Keys.Oemplus:
moel@391:                 case Keys.PageUp:
moel@391:                     zoom = 1;
moel@391:                     break;
moel@391:                 case Keys.Subtract:
moel@391:                 case Keys.OemMinus:
moel@391:                 case Keys.PageDown:
moel@391:                     zoom = -1;
moel@391:                     break;
moel@391:             }
moel@391: 
moel@391:             if ((deltax * deltax) + (deltay * deltay) > 0)
moel@391:             {
moel@391:                 deltax = deltax * this.ActualModel.PlotArea.Width * this.KeyboardPanHorizontalStep;
moel@391:                 deltay = deltay * this.ActualModel.PlotArea.Height * this.KeyboardPanVerticalStep;
moel@391: 
moel@391:                 // small steps if the user is pressing control
moel@391:                 if (control)
moel@391:                 {
moel@391:                     deltax *= 0.2;
moel@391:                     deltay *= 0.2;
moel@391:                 }
moel@391: 
moel@391:                 this.PanAll(deltax, deltay);
moel@391: 
moel@391:                 // e.Handled = true;
moel@391:             }
moel@391: 
moel@391:             if (Math.Abs(zoom) > 1e-8)
moel@391:             {
moel@391:                 if (control)
moel@391:                 {
moel@391:                     zoom *= 0.2;
moel@391:                 }
moel@391: 
moel@391:                 this.ZoomAllAxes(1 + (zoom * 0.12));
moel@391: 
moel@391:                 // e.Handled = true;
moel@391:             }
moel@391: 
moel@391:             if (control && alt && this.ActualModel != null)
moel@391:             {
moel@391:                 switch (e.KeyCode)
moel@391:                 {
moel@391:                     case Keys.R:
moel@391:                         this.SetClipboardText(this.ActualModel.CreateTextReport());
moel@391:                         break;
moel@391:                     case Keys.C:
moel@391:                         this.SetClipboardText(this.ActualModel.ToCode());
moel@391:                         break;
moel@391:                     case Keys.X:
moel@391: 
moel@391:                         // this.SetClipboardText(this.ActualModel.ToXml());
moel@391:                         break;
moel@391:                 }
moel@391:             }
moel@391:         }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// Raises the <see cref="E:System.Windows.Forms.Control.Resize"/> event.
moel@391:         /// </summary>
moel@391:         /// <param name="e">
moel@391:         /// An <see cref="T:System.EventArgs"/> that contains the event data.
moel@391:         /// </param>
moel@391:         protected override void OnResize(EventArgs e)
moel@391:         {
moel@391:             base.OnResize(e);
moel@391:             this.InvalidatePlot(false);
moel@391:         }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// Converts the changed button.
moel@391:         /// </summary>
moel@391:         /// <param name="e">
moel@391:         /// The <see cref="System.Windows.Forms.MouseEventArgs"/> instance containing the event data.
moel@391:         /// </param>
moel@391:         /// <returns>
moel@391:         /// The mouse button.
moel@391:         /// </returns>
moel@391:         private static OxyMouseButton ConvertChangedButton(MouseEventArgs e)
moel@391:         {
moel@391:             switch (e.Button)
moel@391:             {
moel@391:                 case MouseButtons.Left:
moel@391:                     return OxyMouseButton.Left;
moel@391:                 case MouseButtons.Middle:
moel@391:                     return OxyMouseButton.Middle;
moel@391:                 case MouseButtons.Right:
moel@391:                     return OxyMouseButton.Right;
moel@391:                 case MouseButtons.XButton1:
moel@391:                     return OxyMouseButton.XButton1;
moel@391:                 case MouseButtons.XButton2:
moel@391:                     return OxyMouseButton.XButton2;
moel@391:             }
moel@391: 
moel@391:             return OxyMouseButton.Left;
moel@391:         }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// Creates the mouse event arguments.
moel@391:         /// </summary>
moel@391:         /// <param name="e">
moel@391:         /// The <see cref="System.Windows.Forms.MouseEventArgs"/> instance containing the event data.
moel@391:         /// </param>
moel@391:         /// <returns>
moel@391:         /// Mouse event arguments.
moel@391:         /// </returns>
moel@391:         private OxyMouseEventArgs CreateMouseEventArgs(MouseEventArgs e)
moel@391:         {
moel@391:             return new OxyMouseEventArgs
moel@391:             {
moel@391:                 ChangedButton = ConvertChangedButton(e),
moel@391:                 Position = new ScreenPoint(e.Location.X, e.Location.Y),
moel@391:                 IsShiftDown = (ModifierKeys & Keys.Shift) == Keys.Shift,
moel@391:                 IsControlDown = (ModifierKeys & Keys.Control) == Keys.Control,
moel@391:                 IsAltDown = (ModifierKeys & Keys.Alt) == Keys.Alt,
moel@391:             };
moel@391:         }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// Creates the manipulation event args.
moel@391:         /// </summary>
moel@391:         /// <param name="e">
moel@391:         /// The MouseEventArgs instance containing the event data.
moel@391:         /// </param>
moel@391:         /// <returns>
moel@391:         /// A manipulation event args object.
moel@391:         /// </returns>
moel@391:         private ManipulationEventArgs CreateManipulationEventArgs(MouseEventArgs e)
moel@391:         {
moel@391:             return new ManipulationEventArgs(e.Location.ToScreenPoint());
moel@391:         }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// Gets the manipulator for the current mouse button and modifier keys.
moel@391:         /// </summary>
moel@391:         /// <param name="e">
moel@391:         /// The event args.
moel@391:         /// </param>
moel@391:         /// <returns>
moel@391:         /// A manipulator or null if no gesture was recognized.
moel@391:         /// </returns>
moel@391:         private ManipulatorBase GetManipulator(MouseEventArgs e)
moel@391:         {
moel@391:             bool control = (ModifierKeys & Keys.Control) == Keys.Control;
moel@391:             bool shift = (ModifierKeys & Keys.Shift) == Keys.Shift;
moel@391:             bool alt = (ModifierKeys & Keys.Alt) == Keys.Alt;
moel@391: 
moel@391:             bool lmb = e.Button == MouseButtons.Left;
moel@391:             bool rmb = e.Button == MouseButtons.Right;
moel@391:             bool mmb = e.Button == MouseButtons.Middle;
moel@391:             bool xb1 = e.Button == MouseButtons.XButton1;
moel@391:             bool xb2 = e.Button == MouseButtons.XButton2;
moel@391: 
moel@391:             // MMB / control RMB / control+alt LMB
moel@393:             if (mmb || (control && lmb) || (control && alt && rmb))
moel@393:             {
moel@393:                 return new ZoomRectangleManipulator(this);
moel@393:             }
moel@393: 
moel@393:             // Right mouse button / alt+left mouse button
moel@393:             if (lmb || (rmb && alt))
moel@391:             {
moel@391:                 if (e.Clicks == 2)
moel@391:                 {
moel@391:                     return new ResetManipulator(this);
moel@391:                 }
moel@391:                 return new PanManipulator(this);
moel@391:             }
moel@391: 
moel@391:             // Left mouse button
moel@393:             if (rmb)
moel@391:             {
moel@391:                 return new TrackerManipulator(this) { Snap = !control, PointsOnly = shift };
moel@391:             }
moel@391: 
moel@391:             // XButtons are zoom-stepping
moel@391:             if (xb1 || xb2)
moel@391:             {
moel@391:                 double d = xb1 ? 0.05 : -0.05;
moel@391:                 return new ZoomStepManipulator(this, d, control);
moel@391:             }
moel@391: 
moel@391:             return null;
moel@391:         }
moel@391: 
moel@391:         /// <summary>
moel@391:         /// The set clipboard text.
moel@391:         /// </summary>
moel@391:         /// <param name="text">
moel@391:         /// The text.
moel@391:         /// </param>
moel@391:         private void SetClipboardText(string text)
moel@391:         {
moel@391:             try
moel@391:             {
moel@391:                 // todo: can't get the following solution to work
moel@391:                 // http://stackoverflow.com/questions/5707990/requested-clipboard-operation-did-not-succeed
moel@391:                 Clipboard.SetText(text);
moel@391:             }
moel@391:             catch (ExternalException ee)
moel@391:             {
moel@391:                 // Requested Clipboard operation did not succeed.
moel@391:                 MessageBox.Show(this, ee.Message, "OxyPlot");
moel@391:             }
moel@391:         }
moel@391:     }
moel@391: }