source: branches/HeuristicLab.Visualization/HeuristicLab.Visualization/3.3/ChartModes/SelectChartMode.cs @ 13108

#region License Information
/* HeuristicLab
 * Copyright (C) 2002-2015 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
 *
 * This file is part of HeuristicLab.
 *
 * HeuristicLab is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * HeuristicLab is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
 */
#endregion

using System.Drawing;
using System.Linq;
using System.Windows.Forms;
using HeuristicLab.Common.Resources;

namespace HeuristicLab.Visualization {
  public class SelectChartMode : ChartMode {
    public override Image Image { get { return VSImageLibrary.Pointer; } }
    public override string ToolTip { get { return "Select"; } }

    public SelectChartMode(ChartControl control) : base(control) { }

    public override void HandleOnKeyDown(object sender, KeyEventArgs e) {
      base.HandleOnKeyDown(sender, e);

      switch (e.KeyCode) {
        case Keys.Delete:
          if (e.KeyCode == Keys.Delete) {
            try {
              chartControl.SuspendRendering();
              foreach (var primitive in chartControl.Chart.Group.SelectedPrimitives)
                chartControl.Chart.Group.Remove(primitive);
            } finally { chartControl.ResumeRendering(); }
          }
          break;
      }
    }

    public override void HandleOnMouseDown(object sender, MouseEventArgs e) {
      base.HandleOnMouseDown(sender, e);

      try {
        chartControl.SuspendRendering();
        var worldLocation = chartControl.Chart.TransformPixelToWorld(e.Location);
        foreach (var sp in chartControl.Chart.Group.SelectedPrimitives.Where(x => !x.ContainsPoint(worldLocation)))
          sp.Selected = false;
        var p = chartControl.Chart.GetPrimitive(e.Location);
        if (p != null) p.Selected = true;
      } finally { chartControl.ResumeRendering(); }
    }

    public override void HandleOnMouseUp(object sender, MouseEventArgs e) {
      base.HandleOnMouseUp(sender, e);

      switch (e.Button) {
        case MouseButtons.Middle:
          try {
            chartControl.SuspendRendering();
            foreach (var p in chartControl.Chart.Group.SelectedPrimitives)
              p.Selected = false;
          } finally { chartControl.ResumeRendering(); }
          break;
      }
    }

    public override void HandleOnMouseMove(object sender, MouseEventArgs e) {
      try {
        cursor = chartControl.Chart.GetCursor(e.Location);

        switch (e.Button) {
          case MouseButtons.Left:
            var previousWorldLocation = chartControl.Chart.TransformPixelToWorld(previousLocation);
            var worldLocation = chartControl.Chart.TransformPixelToWorld(e.Location);
            var offset = worldLocation - previousWorldLocation;
            try {
              chartControl.SuspendRendering();
              foreach (var primitive in chartControl.Chart.Group.SelectedPrimitives.Where(p => p.ContainsPoint(previousWorldLocation)))
                primitive.Move(previousWorldLocation, offset);
            } finally { chartControl.ResumeRendering(); }
            break;
        }
      } finally {
        chartControl.PictureBox.Update();
        base.HandleOnMouseMove(sender, e);
      }
    }
  }
}