/// <summary>
/// Handler for KeyPress events
/// </summary>
/// <param name="key">the NPlot key enumeration</param>
/// <param name="ps">the InteractivePlotSurface2D</param>
/// <returns></returns>
public override bool DoKeyPress(Modifier keys, InteractivePlotSurface2D ps)
{
double factor = Sensitivity;
if (((keys & Modifier.Alt) != 0))
{
factor *= altFactor;
}
if ((keys & Modifier.Home) != 0)
{
ps.SetOriginalDimensions();
return(true);
}
if ((keys & Modifier.Left) != 0)
{
ps.CacheAxes();
ps.TranslateXAxes(left * factor);
return(true);
}
if ((keys & Modifier.Right) != 0)
{
ps.CacheAxes();
ps.TranslateXAxes(right * factor);
return(true);
}
if ((keys & Modifier.Up) != 0)
{
ps.CacheAxes();
ps.TranslateYAxes(up * factor);
return(true);
}
if ((keys & Modifier.Down) != 0)
{
ps.CacheAxes();
ps.TranslateYAxes(down * factor);
return(true);
}
if ((keys & Modifier.Plus) != 0)
{
ps.CacheAxes();
ps.ZoomXAxes(zoomIn * factor, symmetrical);
ps.ZoomYAxes(zoomIn * factor, symmetrical);
return(true);
}
if ((keys & Modifier.Minus) != 0)
{
ps.CacheAxes();
ps.ZoomXAxes(zoomOut * factor, symmetrical);
ps.ZoomYAxes(zoomOut * factor, symmetrical);
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.ZoomXAxes(xProportion, focusX);
}
if (vertical_)
{
ps.ZoomYAxes(yProportion, focusY);
}
}
else
{
// Axis translation required
double xShift = -dX / area.Width;
double yShift = +dY / area.Height;
if (horizontal_)
{
ps.TranslateXAxes(xShift);
}
if (vertical_)
{
ps.TranslateYAxes(yShift);
}
}
return(true);
}
return(false);
}
/// <summary>
/// Handler for KeyPress events
/// </summary>
/// <param name="key">the NPlot key enumeration</param>
/// <param name="ps">the InteractivePlotSurface2D</param>
/// <returns></returns>
public override bool DoKeyPress(Modifier keys, InteractivePlotSurface2D ps)
{
double factor = Sensitivity;
if (((keys & Modifier.Alt) != 0)) {
factor *= altFactor;
}
if ((keys & Modifier.Home) != 0) {
ps.SetOriginalDimensions();
return true;
}
if ((keys & Modifier.Left) != 0) {
ps.CacheAxes();
ps.TranslateXAxes (left*factor);
return true;
}
if ((keys & Modifier.Right) != 0) {
ps.CacheAxes();
ps.TranslateXAxes (right*factor);
return true;
}
if ((keys & Modifier.Up) != 0) {
ps.CacheAxes();
ps.TranslateYAxes (up*factor);
return true;
}
if ((keys & Modifier.Down) != 0) {
ps.CacheAxes();
ps.TranslateYAxes (down*factor);
return true;
}
if ((keys & Modifier.Plus) != 0) {
ps.CacheAxes();
ps.ZoomXAxes (zoomIn*factor,symmetrical);
ps.ZoomYAxes (zoomIn*factor,symmetrical);
return true;
}
if ((keys & Modifier.Minus) != 0) {
ps.CacheAxes();
ps.ZoomXAxes (zoomOut*factor,symmetrical);
ps.ZoomYAxes (zoomOut*factor,symmetrical);
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.ZoomXAxes (xProportion, focusX);
}
if (vertical_) {
ps.ZoomYAxes (yProportion, focusY);
}
}
else {
// Axis translation required
double xShift = -dX / area.Width;
double yShift = +dY / area.Height;
if (horizontal_) {
ps.TranslateXAxes (xShift);
}
if (vertical_) {
ps.TranslateYAxes (yShift);
}
}
return true;
}
return false;
}