Changeset 566 for trunk/sources/HeuristicLab.CEDMA.Charting/BubbleChartControl.cs

Timestamp:

09/14/08 10:13:32 (16 years ago)

Author:

gkronber

Message:

implemented 'brushing' and cleaned up code a little bit. #270 (Selection of multiple points)

File:

• trunk/sources/HeuristicLab.CEDMA.Charting/BubbleChartControl.cs (modified) (2 diffs)

trunk/sources/HeuristicLab.CEDMA.Charting/BubbleChartControl.cs

@@ -24 +24 @@
 using System.ComponentModel;
 using System.Drawing;
+using System.Drawing.Drawing2D;
 using System.Data;
 using System.Text;
@@ -30 +31 @@
 
 namespace HeuristicLab.CEDMA.Charting {
-  public partial class BubbleChartControl : ChartControl {
-    public new BubbleChart Chart {
-      get { return (BubbleChart)base.Chart; }
+  public partial class BubbleChartControl : UserControl {
+    private Bitmap bitmap;
+    private bool renderingRequired;
+    private Point buttonDownPoint;
+    private Point mousePosition;
+    private int mouseClickCount;
+    private DateTime lastRendered = DateTime.Now;
+    private BubbleChart myChart;
+    public BubbleChart Chart {
+      get { return myChart; }
       set {
-        if (Chart != null) {
-          Chart.Update -= new EventHandler(Chart_Update);
+        if(myChart != null) myChart.Update -= new EventHandler(myChart_Update);
+        myChart = value;
+        if(myChart != null) {
+          myChart.Update += new EventHandler(myChart_Update);
+          SetMode(Chart.Mode);
         }
-        base.Chart = value;
-        if (Chart != null) {
-          Chart.Update += new EventHandler(Chart_Update);
-        }
+        GenerateImage();
       }
     }
-
-    void Chart_Update(object sender, EventArgs e) {
-      // do nothing;
+    private bool myScaleOnResize;
+    public bool ScaleOnResize {
+      get { return myScaleOnResize; }
+      set { myScaleOnResize = value; }
     }
 
     public BubbleChartControl() {
       InitializeComponent();
+      myScaleOnResize = true;
+      GenerateImage();
+    }
+
+    private void myChart_Update(object sender, EventArgs e) {
+      GenerateImage();
+    }
+    private void pictureBox_SizeChanged(object sender, EventArgs e) {
+      if(ScaleOnResize) {
+        if((pictureBox.Width > 0) && (pictureBox.Height > 0) && (Chart != null)) {
+          PointD point = Chart.TransformPixelToWorld(new Point(pictureBox.Width, Chart.SizeInPixels.Height - pictureBox.Height));
+          Chart.SetPosition(Chart.LowerLeft, point);
+        }
+      }
+      GenerateImage();
+    }
+    private void pictureBox_VisibleChanged(object sender, EventArgs e) {
+      if(pictureBox.Visible && renderingRequired) {
+        GenerateImage();
+      }
+    }
+
+    private void pictureBox_MouseDown(object sender, MouseEventArgs e) {
+      buttonDownPoint = e.Location;
+      mouseClickCount = e.Clicks;
+    }
+    private void pictureBox_MouseUp(object sender, MouseEventArgs e) {
+      if(e.Button == MouseButtons.Left) {
+        Point lowerLeft = new Point(Math.Min(e.X, buttonDownPoint.X),
+                                    Math.Max(e.Y, buttonDownPoint.Y));
+        Point upperRight = new Point(Math.Max(e.X, buttonDownPoint.X),
+                                     Math.Min(e.Y, buttonDownPoint.Y));
+        if(Chart.Mode == ChartMode.Zoom) {
+          pictureBox.Refresh();
+          if((lowerLeft.X != upperRight.X) && (lowerLeft.Y != upperRight.Y)) {
+            Chart.ZoomIn(lowerLeft, upperRight);
+          }
+        } else if(Chart.Mode == ChartMode.Select) {
+          if((lowerLeft.X != upperRight.X) && (lowerLeft.Y != upperRight.Y)) {
+            Chart.MouseDrag(lowerLeft, upperRight, e.Button);
+          }
+        }
+      } else if(e.Button == MouseButtons.Middle) {
+        if(Chart.Mode == ChartMode.Zoom) {
+          if(mouseClickCount == 1) Chart.ZoomOut();
+          else if(mouseClickCount == 2) Chart.Unzoom();
+        }
+      }
+    }
+    private void pictureBox_MouseMove(object sender, MouseEventArgs e) {
+      toolTip.SetToolTip(pictureBox, Chart.GetToolTipText(e.Location));
+      Cursor cursor = Chart.GetCursor(e.Location);
+      if(cursor != null) pictureBox.Cursor = cursor;
+      else pictureBox.Cursor = Cursors.Default;
+
+      if(e.Button != MouseButtons.None) {
+        if((Chart.Mode == ChartMode.Zoom || Chart.Mode == ChartMode.Select) && (e.Button == MouseButtons.Left)) {
+          pictureBox.Refresh();
+          Graphics graphics = pictureBox.CreateGraphics();
+          Pen pen = new Pen(Color.Gray);
+          pen.DashStyle = DashStyle.Dash;
+          graphics.DrawRectangle(pen,
+                                 Math.Min(e.X, buttonDownPoint.X),
+                                 Math.Min(e.Y, buttonDownPoint.Y),
+                                 Math.Abs(e.X - buttonDownPoint.X),
+                                 Math.Abs(e.Y - buttonDownPoint.Y));
+          pen.Dispose();
+          graphics.Dispose();
+        }
+      }
+      mousePosition = e.Location;
+    }
+
+    private void zoomToolStripMenuItem_Click(object sender, EventArgs e) {
+      SetMode(ChartMode.Zoom);
+    }
+    private void selectToolStripMenuItem_Click(object sender, EventArgs e) {
+      SetMode(ChartMode.Select);
+    }
+
+    private void GenerateImage() {
+      if(!Visible) {
+        renderingRequired = true;
+      } else {
+        if((pictureBox.Width == 0) || (pictureBox.Height == 0)) {
+          bitmap = null;
+        } else {
+          bitmap = new Bitmap(pictureBox.Width, pictureBox.Height);
+          if(Chart != null) {
+            Graphics graphics = Graphics.FromImage(bitmap);
+            graphics.SetClip(new System.Drawing.Rectangle(0, 0, pictureBox.Width, pictureBox.Height));
+            Chart.Render(graphics, pictureBox.Width, pictureBox.Height);
+            graphics.Dispose();
+          }
+        }
+        pictureBox.Image = bitmap;
+        renderingRequired = false;
+      }
+    }
+
+    private void SetMode(ChartMode mode) {
+      zoomToolStripMenuItem.Checked = false;
+      selectToolStripMenuItem.Checked = false;
+      if(mode == ChartMode.Zoom) zoomToolStripMenuItem.Checked = true;
+      else if(mode == ChartMode.Select) selectToolStripMenuItem.Checked = true;
+      Chart.Mode = mode;
+    }
+
+    private void pictureBox_MouseClick(object sender, MouseEventArgs e) {
+      Chart.MouseClick(e.Location, e.Button);
+    }
+
+    private void pictureBox_MouseDoubleClick(object sender, MouseEventArgs e) {
+      Chart.MouseDoubleClick(e.Location, e.Button);
     }
   }