/// <summary>
/// Handler for the "Undo All Zoom/Pan" context menu item. Restores the scale ranges to the values
/// before all zoom and pan operations
/// </summary>
/// <remarks>
/// This method differs from the <see cref="RestoreScale" /> method in that it sets the scales
/// to their initial setting prior to any user actions. The <see cref="RestoreScale" /> method
/// sets the scales to full auto mode (regardless of what the initial setting may have been).
/// </remarks>
/// <param name="primaryPane">The <see cref="GraphPane" /> object which is to be zoomed out</param>
public void ZoomOutAll(GraphPane primaryPane)
{
if (primaryPane != null && !primaryPane.ZoomStack.IsEmpty)
{
ZoomState.StateType type = primaryPane.ZoomStack.Top.Type;
ZoomState oldState = new ZoomState(primaryPane, type);
//ZoomState newState = pane.ZoomStack.PopAll( pane );
ZoomState newState = null;
if (_isSynchronizeXAxes || _isSynchronizeYAxes)
{
foreach (GraphPane pane in _masterPane._paneList)
{
ZoomState state = pane.ZoomStack.PopAll(pane);
if (pane == primaryPane)
{
newState = state;
}
}
}
else
{
newState = primaryPane.ZoomStack.PopAll(primaryPane);
}
// Provide Callback to notify the user of zoom events
if (this.ZoomEvent != null)
{
this.ZoomEvent(this, oldState, newState);
}
Refresh();
}
}
/// <summary>
/// Add the scale range information from the specified <see cref="GraphPane"/> object as a
/// new <see cref="ZoomState"/> entry on the stack.
/// </summary>
/// <param name="pane">The <see cref="GraphPane"/> object from which the scale range
/// information should be copied.</param>
/// <param name="type">A <see cref="ZoomState.StateType"/> enumeration that indicates whether this
/// state is the result of a zoom or pan operation.</param>
/// <returns>The resultant <see cref="ZoomState"/> object that was pushed on the stack.</returns>
public ZoomState Push(GraphPane pane, ZoomState.StateType type)
{
ZoomState state = new ZoomState(pane, type);
this.Add(state);
return(state);
}
/// <summary>
/// Handler for the "UnZoom/UnPan" context menu item. Restores the scale ranges to the values
/// before the last zoom, pan, or scroll operation.
/// </summary>
/// <remarks>
/// Triggers a <see cref="ZoomEvent" /> for any type of undo (including pan, scroll, zoom, and
/// wheelzoom). This method will affect all the
/// <see cref="GraphPane" /> objects in the <see cref="MasterPane" /> if
/// <see cref="IsSynchronizeXAxes" /> or <see cref="IsSynchronizeYAxes" /> is true.
/// </remarks>
/// <param name="primaryPane">The primary <see cref="GraphPane" /> object which is to be
/// zoomed out</param>
public void ZoomOut(GraphPane primaryPane)
{
if (primaryPane == null || primaryPane.ZoomStack.IsEmpty)
{
return;
}
ZoomState.StateType type = primaryPane.ZoomStack.Top.Type;
ZoomState oldState = new ZoomState(primaryPane, type);
ZoomState newState = null;
if (_isSynchronizeXAxes || _isSynchronizeYAxes)
{
foreach (var pane in _masterPane.PaneList.Where(p => p is GraphPane).Cast <GraphPane>())
{
var state = pane.ZoomStack.Pop(pane);
if (pane == primaryPane)
{
newState = state;
}
}
}
else
{
newState = primaryPane.ZoomStack.Pop(primaryPane);
}
// Provide Callback to notify the user of zoom events
ZoomEvent?.Invoke(this, oldState, newState);
Refresh();
}
/// <summary>
/// Save the current states of the GraphPanes to a separate collection. Save a single
/// (<see paramref="primaryPane" />) GraphPane if the panes are not synchronized
/// (see <see cref="IsSynchronizeXAxes" /> and <see cref="IsSynchronizeYAxes" />),
/// or save a list of states for all GraphPanes if the panes are synchronized.
/// </summary>
/// <param name="primaryPane">The primary GraphPane on which zoom/pan/scroll operations
/// are taking place</param>
/// <param name="type">The <see cref="ZoomState.StateType" /> that describes the
/// current operation</param>
/// <returns>The <see cref="ZoomState" /> that corresponds to the
/// <see paramref="primaryPane" />.
/// </returns>
private ZoomState ZoomStateSave(GraphPane primaryPane, ZoomState.StateType type)
{
ZoomStateClear();
if (_isSynchronizeXAxes || _isSynchronizeYAxes)
{
foreach (GraphPane pane in _masterPane._paneList)
{
ZoomState state = new ZoomState(pane, type);
if (pane == primaryPane)
{
_zoomState = state;
}
_zoomStateStack.Add(state);
}
}
else
{
_zoomState = new ZoomState(primaryPane, type);
}
return(_zoomState);
}
/// <summary>
/// Save the current states of the GraphPanes to a separate collection. Save a single
/// (<see paramref="primaryPane" />) GraphPane if the panes are not synchronized
/// (see <see cref="IsSynchronizeXAxes" /> and <see cref="IsSynchronizeYAxes" />),
/// or save a list of states for all GraphPanes if the panes are synchronized.
/// </summary>
/// <param name="primaryPane">The primary GraphPane on which zoom/pan/scroll operations
/// are taking place</param>
/// <param name="type">The <see cref="ZoomState.StateType" /> that describes the
/// current operation</param>
/// <returns>The <see cref="ZoomState" /> that corresponds to the
/// <see paramref="primaryPane" />.
/// </returns>
private ZoomState ZoomStateSave(GraphPane primaryPane, ZoomState.StateType type)
{
ZoomStateClear();
if (_isSynchronizeXAxes || _isSynchronizeYAxes)
{
foreach (var pane in _masterPane.PaneList.Where(p => p is GraphPane).Cast <GraphPane>())
{
var state = new ZoomState(pane, type);
if (pane == primaryPane)
{
_zoomState = state;
}
_zoomStateStack.Add(state);
}
}
else
{
_zoomState = new ZoomState(primaryPane, type);
}
return(_zoomState);
}
/// <summary>
/// Add the scale range information from the specified <see cref="GraphPane"/> object as a
/// new <see cref="ZoomState"/> entry on the stack.
/// </summary>
/// <param name="pane">The <see cref="GraphPane"/> object from which the scale range
/// information should be copied.</param>
/// <param name="type">A <see cref="ZoomState.StateType"/> enumeration that indicates whether this
/// state is the result of a zoom or pan operation.</param>
public void Push(GraphPane pane, ZoomState.StateType type)
{
ZoomState state = new ZoomState(pane, type);
this.List.Add(state);
}
