/// <summary>
/// MouseUp method for RubberBand selection
/// </summary>
/// <param name="X">mouse X position</param>
/// <param name="Y"> mouse Y position</param>
/// <param name="keys"> mouse and keyboard modifiers</param>
/// <param name="ps">the InteractivePlotSurface2D</param>
public override bool DoMouseUp(int X, int Y, Modifier keys, InteractivePlotSurface2D ps)
{
bool modified = false;
if (selectionActive_) {
// erase current (clipped) rectangle
ps.DrawOverlayRectangle(startPoint_, endPoint_, Color.White, false);
endPoint_.X = X;
endPoint_.Y = Y;
Rectangle bounds = ps.PlotAreaBoundingBoxCache;
if (!bounds.Contains(endPoint_)) {
// MouseUp outside plotArea - cancel selection
modified = false;
}
else {
ps.CacheAxes();
// Redefine range based on selection. The proportions for
// Min and Max do not require Min < Max, since they will
// be re-ordered by Axis.DefineRange if necessary
double xMin = startPoint_.X - bounds.Left;
double yMin = bounds.Bottom - startPoint_.Y;
double xMax = endPoint_.X - bounds.Left;
double yMax = bounds.Bottom - endPoint_.Y;
double xMinProp = xMin/bounds.Width;
double xMaxProp = xMax/bounds.Width;
double yMinProp = yMin/bounds.Height;
double yMaxProp = yMax/bounds.Height;
ps.DefineAxis(ps.XAxis1, xMinProp, xMaxProp);
ps.DefineAxis(ps.XAxis2, xMinProp, xMaxProp);
ps.DefineAxis(ps.YAxis1, yMinProp, yMaxProp);
ps.DefineAxis(ps.YAxis2, yMinProp, yMaxProp);
modified = true;
}
selectionActive_ = false;
startPoint_ = unset_;
endPoint_ = unset_;
}
return modified;
}
/// <summary>
/// MouseMove method for AxisDrag interaction
/// </summary>
/// <param name="X">mouse X position</param>
/// <param name="Y"> mouse Y position</param>
/// <param name="keys"> mouse and keyboard modifiers</param>
/// <param name="ps">the InteractivePlotSurface2D</param>
public override bool DoMouseMove(int X, int Y, Modifier keys, InteractivePlotSurface2D ps)
{
if (((keys & Modifier.Button1) != 0) && dragging_&& physicalAxis_ != null ) {
ps.CacheAxes();
float dX = (X - lastPoint_.X);
float dY = (Y - lastPoint_.Y);
lastPoint_ = new Point(X, Y);
// In case the physical axis is not horizontal/vertical, combine dX and dY
// in a way which preserves their sign and intuitive axis zoom sense, ie
// because the physical origin is top-left, expand with +ve dX, but -ve dY
double distance = dX - dY;
double proportion = distance*sensitivity_ /physicalAxis_.PhysicalLength;
axis_.IncreaseRange(proportion, focusRatio_);
return true;
}
return false;
}
/// <summary>
/// MouseMove method for PlotDrag interaction
/// </summary>
/// <param name="X">mouse X position</param>
/// <param name="Y"> mouse Y position</param>
/// <param name="keys"> mouse and keyboard modifiers</param>
/// <param name="ps">the InteractivePlotSurface2D</param>
public override bool DoMouseMove(int X, int Y, Modifier keys, InteractivePlotSurface2D ps)
{
Rectangle area = ps.PlotAreaBoundingBoxCache;
// Mouse Left-Button gives Plot Drag, Ctrl.Left-Button Zooms
if (((keys & Modifier.Button1) != 0) && dragInitiated_) {
ps.CacheAxes();
double dX = X - lastPoint_.X; // distance mouse has moved
double dY = Y - lastPoint_.Y;
lastPoint_ = new Point(X, Y);
if ((keys & Modifier.Control) != 0) {
// Axis re-ranging required
double factor = Sensitivity;
if ((keys & Modifier.Alt) != 0) {
factor *= 0.25; // arbitrary change
}
double xProportion = +dX*factor/area.Width;
double yProportion = -dY*factor/area.Height;
if (horizontal_) {
ps.ZoomAxis(ps.XAxis1, xProportion, focusX);
ps.ZoomAxis(ps.XAxis2, xProportion, focusX);
}
if (vertical_) {
ps.ZoomAxis(ps.YAxis1, yProportion, focusY);
ps.ZoomAxis(ps.YAxis2, yProportion, focusY);
}
}
else {
// Axis translation required
double xShift = -dX / area.Width;
double yShift = +dY / area.Height;
if (horizontal_) {
ps.TranslateAxis(ps.XAxis1, xShift);
ps.TranslateAxis(ps.XAxis2, xShift);
}
if (vertical_) {
ps.TranslateAxis(ps.YAxis1, yShift);
ps.TranslateAxis(ps.YAxis2, yShift);
}
}
return true;
}
return false;
}
