/// <summary>
/// Handles control's MouseWheel event
/// </summary>
/// <param name="e"></param>
protected override void OnMouseWheel(MouseEventArgs e)
{
var s0 = CurrentScale;
var s1 = CurrentScale;
var sf = FitScale;
var c0 = new PointF(e.X - CtlCenter.X, e.Y - CtlCenter.Y); // relative control position of cursor (in pixels)
var m0 = new PointF(c0.X / s0 - Offset.X, c0.Y / s0 - Offset.Y); // relative map position of cursor
if (e.Delta > 0 && s0 < 100)
{
s1 *= 1.5f;
}
if (e.Delta < 0 && s0 > sf)
{
s1 /= 1.5f;
}
if (s1 != s0)
{
CurrentScale = s1;
Offset = new PointF(c0.X / s1 - m0.X, c0.Y / s1 - m0.Y);
Invalidate();
if (ScaleChanged != null)
{
ScaleChanged.Invoke(this, EventArgs.Empty);
}
}
}
protected virtual void OnScaleChanged(ValueChangedEventArgs e)
{
if (!_externallySet)
{
ScaleChanged?.Invoke(this, e);
}
}
protected void RecalculateScale()
{
var scale = LocalScale * globalScale;
var parents = GetParents();
Scale = parents.Any() ? parents.Select(rt => rt.LocalScale).Aggregate((parent, child) => parent * child) * scale : scale;
recalculateRect = true;
ScaleChanged?.Invoke();
}
void IDragHandler.OnDrag([NotNull] PointerEventData eventData)
{
if (targetTransform == null)
{
return;
}
float scale = 1f / ModuleListPanel.CanvasScale;
var size = targetTransform.sizeDelta + Vector2.Scale(eventData.delta, new Vector2(scale, -scale));
targetTransform.sizeDelta = Vector2.Max(size, minSize);
ScaleChanged?.Invoke();
//Debug.Log(targetTransform.sizeDelta);
}
/// <summary>
/// Resets the map view to default value (zoomed out full, centered)
/// </summary>
public void ResetView()
{
lock (LayerLock) {
Layers = new[] {
new Layer(3, RiverColor),
new Layer(4, CrossColor),
new Layer(2, RoadColor),
new Layer(1, SwitchColor),
new Layer(0, TrackColor)
};
}
FitScale = CurrentScale = GetFitScale();
MapCenter = new PointF(Splines.Bounds.X + Splines.Bounds.Width / 2, Splines.Bounds.Y + Splines.Bounds.Height / 2);
Offset = new PointF(0, 0);
Invalidate();
if (ScaleChanged != null)
{
ScaleChanged.Invoke(this, EventArgs.Empty);
}
if (PositionChanged != null)
{
PositionChanged.Invoke(this, EventArgs.Empty);
}
}
private void OnScalechanged()
{
ScaleChanged?.Invoke(Scale);
TransformChanged?.Invoke(this);
}
/// <summary>
/// Raises the <see cref="ScaleChanged" /> event.
/// </summary>
/// <seealso cref="EventArgs" />
protected virtual void OnScaleChanged()
{
ScaleChanged?.Invoke(this, EventArgs.Empty);
}
private void OnScaleChanged(SyncObject obj)
{
ScaleChanged.RaiseEvent();
}
protected virtual void OnScaleChanged(EventArgs e)
{
ScaleChanged?.Invoke(this, e);
}
public void RaiseScaleChanged(double newScale)
{
ScaleChanged?.Invoke(this, newScale);
}
//---------------------------------------------------------------------------
private void OnScaleChanged(Vector2 oldScale, Vector2 newScale)
{
ScaleChanged?.Invoke(oldScale, newScale);
}
protected virtual void OnScaleChanged(ScaleEventArgs args)
{
ScaleChanged?.Invoke(this, args);
}
public void RaiseScaleChanged(object sender, EventArgs e)
{
ScaleChanged?.Invoke(sender, e);
}
private static void OnScaledChanged(int newScale)
{
ScaleChanged?.Invoke(null, newScale);
}
