private static void SetChartControlState(Chart sender, MSChartExtensionToolState state)
{
ChartTool[(Chart)sender].ToolState = state;
sender.ChartAreas[0].CursorX.IsUserEnabled = false;
sender.ChartAreas[0].CursorY.IsUserEnabled = false;
switch (state)
{
case MSChartExtensionToolState.Select:
sender.Cursor = Cursors.Cross;
sender.ChartAreas[0].CursorX.IsUserEnabled = true;
sender.ChartAreas[0].CursorY.IsUserEnabled = true;
break;
case MSChartExtensionToolState.Zoom:
case MSChartExtensionToolState.ZoomX:
sender.Cursor = Cursors.Cross;
break;
case MSChartExtensionToolState.Pan:
sender.Cursor = Cursors.Hand;
break;
}
}
private static void SetChartControlState(Chart sender, MSChartExtensionToolState state)
{
ChartTool[(Chart)sender].ToolState = state;
sender.ChartAreas[0].CursorX.IsUserEnabled = false;
sender.ChartAreas[0].CursorY.IsUserEnabled = false;
switch (state)
{
case MSChartExtensionToolState.Select:
sender.Cursor = Cursors.Cross;
sender.ChartAreas[0].CursorX.IsUserEnabled = true;
sender.ChartAreas[0].CursorY.IsUserEnabled = true;
break;
case MSChartExtensionToolState.Zoom:
case MSChartExtensionToolState.ZoomX:
sender.Cursor = Cursors.Cross;
break;
case MSChartExtensionToolState.Pan:
sender.Cursor = Cursors.Hand;
break;
}
}
/// <summary>
/// SetToolState
/// </summary>
public static void SetToolState(this Chart sender, MSChartExtensionToolState state)
{
SetChartControlState(sender, state);
}
private static void ChartControl_MouseUp(object sender, MouseEventArgs e)
{
if (e.Button != System.Windows.Forms.MouseButtons.Left)
{
return;
}
MouseDowned = false;
Chart ptrChart = (Chart)sender;
ChartArea ptrChartArea = ptrChart.ChartAreas[0];
ChartData data = GetDataForChart(ptrChart);
MSChartExtensionToolState state = data.ToolState;
switch (state)
{
case MSChartExtensionToolState.Zoom:
case MSChartExtensionToolState.ZoomX:
//Zoom area (Pixel)
double XStart = ptrChartArea.CursorX.SelectionStart;
double XEnd = ptrChartArea.CursorX.SelectionEnd;
double YStart = ptrChartArea.CursorY.SelectionStart;
double YEnd = ptrChartArea.CursorY.SelectionEnd;
if ((XStart == XEnd) && (YStart == YEnd))
{
return;
}
//Zoom area for X Axis
double left = Math.Min(XStart, XEnd);
double right = Math.Max(XStart, XEnd);
double XMin = ptrChartArea.AxisX.ValueToPosition(left);
double XMax = ptrChartArea.AxisX.ValueToPosition(right);
//Zoom area for Y Axis
double bottom = Math.Min(YStart, YEnd);
double top = Math.Max(YStart, YEnd);
double YMin = ptrChartArea.AxisY.ValueToPosition(bottom);
double YMax = ptrChartArea.AxisY.ValueToPosition(top);
// NOTE: left <= right, even if Axis.IsReversed
//X-Axis
ptrChartArea.AxisX.ScaleView.Zoom(left, right);
ptrChartArea.AxisX2.ScaleView.Zoom(
ptrChartArea.AxisX2.PositionToValue(XMin),
ptrChartArea.AxisX2.PositionToValue(XMax));
//Y-Axis
if (state == MSChartExtensionToolState.Zoom)
{
ptrChartArea.AxisY.ScaleView.Zoom(bottom, top);
ptrChartArea.AxisY2.ScaleView.Zoom(
ptrChartArea.AxisY2.PositionToValue(YMin),
ptrChartArea.AxisY2.PositionToValue(YMax));
}
//Clear selection (the following seem to be equivalent)
ptrChartArea.CursorX.SetSelectionPosition(0, 0);
ptrChartArea.CursorY.SetSelectionPosition(0, 0);
//ptrChartArea.CursorX.SelectionStart = ptrChartArea.CursorX.SelectionEnd;
//ptrChartArea.CursorY.SelectionStart = ptrChartArea.CursorY.SelectionEnd;
//NOTE: At this point, the scaled view has already been updated to reflect zoom
OnZoomChanged(ptrChart);
break;
case MSChartExtensionToolState.Pan:
break;
}
}
private static void SetChartControlState(Chart sender, MSChartExtensionToolState state)
{
ChartTool[(Chart)sender].ToolState = state;
UpdateChartControlState(sender);
}
