public override void ProcessUserAction(eUserAction action, double param)
{
NeedsUpdate = true;
double oldOffset;
switch (action)
{
case eUserAction.YOffset:
oldOffset = DisplayYOffset;
param += oldOffset;
param = Math.Min(10 * DirectXHeight, param);
DisplayYOffset = Math.Max(-10 * DirectXHeight, param);
if (oldOffset != DisplayYOffset)
{
UpdateAxis = true;
UpdateCursor = true;
UpdateOverlays = true;
}
break;
case eUserAction.YZoomIn:
if (YZoomFactor < YZoomFactorMax)
{
DisplayYOffset = (LastMousePos.Y + DisplayYOffset) * YZoomStep - LastMousePos.Y;
YZoomFactor *= YZoomStep;
/* call ourselves again for min/max fitting */
ProcessUserAction(eUserAction.YOffset, 0);
UpdateAxis = true;
UpdateCursor = true;
UpdateOverlays = true;
}
break;
case eUserAction.YZoomOut:
if (YZoomFactor > YZoomFactorMin)
{
DisplayYOffset = (LastMousePos.Y + DisplayYOffset) / YZoomStep - LastMousePos.Y;
YZoomFactor /= YZoomStep;
/* call ourselves again for min/max fitting */
ProcessUserAction(eUserAction.YOffset, 0);
UpdateAxis = true;
UpdateCursor = true;
UpdateOverlays = true;
}
break;
default:
base.ProcessUserAction(action, param);
break;
}
NeedsRender = true;
}
public override void ProcessUserAction(eUserAction action, double param)
{
NeedsUpdate = true;
double oldOffset;
switch (action)
{
case eUserAction.XOffset:
oldOffset = DisplayXOffset;
param += oldOffset;
param = Math.Min(DirectXWidth * XZoomFactor, param);
DisplayXOffset = Math.Max(-DirectXWidth * XZoomFactor, param);
if (oldOffset != DisplayXOffset)
{
UpdateAxis = true;
UpdateCursor = true;
UpdateOverlays = true;
}
break;
case eUserAction.YOffset:
oldOffset = DisplayYOffset;
param += oldOffset;
param = Math.Min(DirectXHeight * YZoomFactor, param);
DisplayYOffset = Math.Max(-DirectXHeight * YZoomFactor, param);
if (oldOffset != DisplayYOffset)
{
UpdateAxis = true;
UpdateCursor = true;
UpdateOverlays = true;
}
break;
case eUserAction.YZoomIn:
if (YZoomFactor < YZoomFactorMax)
{
YZoomFactor *= YZoomStep;
XZoomFactor = YZoomFactor;
ProcessUserAction(eUserAction.XOffset, 0);
ProcessUserAction(eUserAction.YOffset, 0);
UpdateAxis = true;
UpdateCursor = true;
UpdateOverlays = true;
}
break;
case eUserAction.YZoomOut:
if (YZoomFactor > YZoomFactorMin)
{
YZoomFactor /= YZoomStep;
XZoomFactor = YZoomFactor;
ProcessUserAction(eUserAction.XOffset, 0);
ProcessUserAction(eUserAction.YOffset, 0);
UpdateAxis = true;
UpdateCursor = true;
UpdateOverlays = true;
}
break;
default:
base.ProcessUserAction(action, param);
break;
}
NeedsRender = true;
}
