/// <summary>
/// Moves chart around depending on
/// </summary>
/// <param name="e"></param>
private void MoveX(MouseEventArgs e)
{
if (MouseVector.Start.IsInvalid)
{
return;
}
MouseVector.End = (Point2D)e.Location;
if (MouseVector.IsInvalid ||
MouseVector.Min < 0 ||
MouseVector.MaxX >= ChartMain.Width ||
MouseVector.MaxY >= ChartMain.Height ||
MouseVector.Width < 1
)
{
return;
}
double position = ChartMain.ChartAreas[0].AxisX.ScaleView.Position;
double size = ChartMain.ChartAreas[0].AxisX.ScaleView.Size;
double x1 = AxisX.PixelPositionToValue(MouseVector.Start.X);
double x2 = AxisX.PixelPositionToValue(MouseVector.End.X);
double move = x2 - x1;
double pXStart = position - move;
double pXEnd = position + size;
if (MinX == null || MaxX == null)
{
return;
}
if ((pXStart < MinX.XValue && move > 0) || (pXEnd > MaxX.XValue && move < 0))
{
MouseVector.Reset();
return;
}
//ScaleX.Zoom(pXStart, pXEnd);
ChartMain.ChartAreas[0].AxisX.ScaleView.Position = pXStart;
//ChartMain.ChartAreas[0].AxisX.ScaleView.Size = pXEnd - pXStart;
this.RescaleY();
MouseVector.Start = MouseVector.End;
}
void ChartMain_MouseWheel(object sender, MouseEventArgs e)
{
Area.RecalculateAxesScale();
double position = ChartMain.ChartAreas[0].AxisX.ScaleView.Position;
double xMin = ScaleX.ViewMinimum;
double xMax = ScaleX.ViewMaximum;
double size = xMax - xMin;// ChartMain.ChartAreas[0].AxisX.ScaleView.Size;
//if (e.Location.X < 0 || e.Location.Y < 0)// || e.Location.X > 100 || e.Location.Y > 100)
// return;
double cursor = 0;
try
{
cursor = AxisX.PixelPositionToValue(e.Location.X);
}
catch { return; }
double change = size / 3;
double pXStart = double.NaN;
double pXEnd = double.NaN;
if (e.Delta < 0 && RescaledPointsCount < ChartMain.Series[0].Points.Count)
{
pXStart = AxisX.PixelPositionToValue(e.Location.X) - change * 3;
pXEnd = AxisX.PixelPositionToValue(e.Location.X) + change * 3;
ScaleX.Zoom(pXStart, pXEnd);
}
else if (e.Delta > 0 && RescaledPointsCount > 30)
{
pXStart = AxisX.PixelPositionToValue(e.Location.X) - change;
pXEnd = AxisX.PixelPositionToValue(e.Location.X) + change;
}
if (!Doubles.IsNaN(pXEnd, pXStart))
{
if (pXStart < MinX.XValue)
{
pXStart = MinX.XValue;
}
if (pXEnd > MaxX.XValue)
{
pXEnd = MaxX.XValue;
}
ScaleX.Zoom(pXStart, pXEnd);
this.RescaleY();
}
}
private void OnChartMouseUp(object sender, MouseEventArgs e)
{
if (SelectButton == MouseButtons.None)
{
return;
}
HitTestResult htr = chart.HitTest(e.X, e.Y);
if (htr.ChartElementType == ChartElementType.Nothing)
{
return;
}
var mousedx = e.X - StartSelect.X;
var mousedy = e.Y - StartSelect.Y;
var x = AxisX.PixelPositionToValue(StartSelect.X);
var y = AxisY.PixelPositionToValue(e.Y);
var dx = AxisX.PixelPositionToValue(e.X) - x;
var dy = AxisY.PixelPositionToValue(StartSelect.Y) - y;
if (SelectButton == MouseButtons.Left)
{
if (mousedx > 0 && mousedy > 0)
{
AxisX.ScaleView.Zoom(x, x + dx);
AxisY.ScaleView.Zoom(y, y + dy);
}
else if (mousedx < 0 && mousedy < 0)
{
var szx = AxisX.ScaleView.ViewMaximum - AxisX.ScaleView.ViewMinimum;
var szy = AxisY.ScaleView.ViewMaximum - AxisY.ScaleView.ViewMinimum;
dx = szx * szx / -dx;
dy = szy * szy / -dy;
x = AxisX.ScaleView.Position + szx / 2 - dx / 2;
y = AxisY.ScaleView.Position + szy / 2 - dy / 2;
AxisX.ScaleView.Zoom(x, x + dx);
AxisY.ScaleView.Zoom(y, y + dy);
}
else
{
AxisX.ScaleView.ZoomReset();
AxisY.ScaleView.ZoomReset();
}
}
if (SelectButton == MouseButtons.Right)
{
AxisX.ScaleView.Scroll(AxisX.ScaleView.Position - dx);
AxisY.ScaleView.Scroll(AxisY.ScaleView.Position + dy);
}
SelectButton = MouseButtons.None;
}
private void ChartOnMouseDown(object sender, MouseEventArgs e)
{
if (e.Button != MouseButtons.Right)
{
return;
}
try
{
StartMousePosition = new PointD(
AxisX.PixelPositionToValue(e.X),
AxisY.PixelPositionToValue(e.Y));
IsChartScroll = true;
}
catch (ArgumentException)
{
IsChartScroll = false;
}
}
private void ChartOnMouseMove(object sender, MouseEventArgs e)
{
if (IsChartScroll && e.Button == MouseButtons.Right)
{
try
{
var x = AxisX.ScaleView.Position + StartMousePosition.X - AxisX.PixelPositionToValue(e.X);
var y = AxisY.ScaleView.Position + StartMousePosition.Y - AxisY.PixelPositionToValue(e.Y);
x = Math.Round(x, DigitsX); //0..15
y = Math.Round(y, DigitsY);
AxisX.ScaleView.Scroll(x);
AxisY.ScaleView.Scroll(y);
}
catch (ArgumentException)
{
}
}
else
{
IsChartScroll = false;
}
}
public override void ChangeDrawArea()
{
if (autoYToolStripMenuItem.Checked)
{
double ymax = -1;
double xmin = AxisX.PixelPositionToValue(Math.Min(SelArea.X0, SelArea.X1));
double xmax = AxisX.PixelPositionToValue(Math.Max(SelArea.X0, SelArea.X1));
foreach (var s in chart.Series)
{
for (int i = 0; i < s.Points.Count; i++)
{
//範囲内での絶対値最大の値を探す
if (ymax < 0)
{
ymax = Math.Abs(s.Points[i].YValues[0]);
}
else
{
ymax = Math.Max(ymax, s.Points.Max(
t => (t.XValue >= xmin && t.XValue <= xmax) ? Math.Abs(t.YValues[0]) : 0
));
}
}
}
if (ymax < 0)
{
return;
}
SelArea.SetChartDrawAreaLimitedY(AxisX, AxisY, ymax);
}
else
{
base.ChangeDrawArea();
}
}
void ChartMain_MouseWheel(object sender, MouseEventArgs e)
{
if (ChartMain.Series.IsNullOrEmpty())
{
return;
}
ZoomPointNow = (Point2D)MousePosition;
Area.RecalculateAxesScale();
double position = ChartMain.ChartAreas[0].AxisX.ScaleView.Position;
double xMin = ScaleX.ViewMinimum;
double xMax = ScaleX.ViewMaximum;
double size = xMax - xMin;// ChartMain.ChartAreas[0].AxisX.ScaleView.Size;
//if (e.Location.X < 0 || e.Location.Y < 0)// || e.Location.X > 100 || e.Location.Y > 100)
// return;
double cursor = 0;
try
{
cursor = AxisX.PixelPositionToValue(e.Location.X);
}
catch { return; }
double change = size / 3;
double pXStart = double.NaN;
double pXEnd = double.NaN;
int locationX = e.Location.X;
double positionValue = AxisX.PixelPositionToValue(locationX);
//If mouse is not moved zoom toward origin cursor
if (ZoomPointOrigin == ZoomPointNow)
{
positionValue = CursorPosition.X;
}
if (e.Delta < 0 && RescaledPointsCount < ChartMain.Series[0].Points.Count)
{
pXStart = positionValue - change * 3;
pXEnd = positionValue + change * 3;
ScaleX.Zoom(pXStart, pXEnd);
}
else if (e.Delta > 0 && RescaledPointsCount > 30)
{
pXStart = positionValue - change;
pXEnd = positionValue + change;
}
if (!Doubles.IsNaN(pXEnd, pXStart))
{
if (pXStart < MinX.XValue)
{
pXStart = MinX.XValue;
}
if (pXEnd > MaxX.XValue)
{
pXEnd = MaxX.XValue;
}
ScaleX.Zoom(pXStart, pXEnd);
this.RescaleY();
}
ZoomPointOrigin = (Point2D)MousePosition;
}
