AxisDragModifierBase

AxisDragModifierBase

protected AxisDragModifierBase()

axisDragModifierBase = AxisDragModifierBase()

Initializes a new instance of the AxisDragModifierBase class.

AxisId

public string AxisId { get; set; }

value = axisDragModifierBase.AxisId
axisDragModifierBase.AxisId = value

Defines which YAxis to bind the YAxisDragModifier to, matching by string Id

DragMode

public AxisDragModes DragMode { get; set; }

value = axisDragModifierBase.DragMode
axisDragModifierBase.DragMode = value

Gets or sets the DragMode of the YAxisDragModifier. This modifier may be used to scale the VisibleRange or pan the VisibleRange creating a scrolling or vertical pan effect.

IsDragging

public bool IsDragging { get; protected set; }

value = axisDragModifierBase.IsDragging
axisDragModifierBase.IsDragging = value

Gets a value indicating whether the user is currently dragging the axis

MinTouchArea

public double MinTouchArea { get; set; }

value = axisDragModifierBase.MinTouchArea
axisDragModifierBase.MinTouchArea = value

Gets or sets minimal area of recognition (min height for horizontal axis or min width for vertical), where user click or touch triggers zoom behavior.

CalculateRelativeRange

protected virtual DoubleRange CalculateRelativeRange(IRange fromRange, IAxis axis)

result = axisDragModifierBase.CalculateRelativeRange(fromRange, axis)

When overriden in a derived class, calculates an output IRange to apply to the associated AxisBaseAxis, given the input parameters.

fromRange

The input range, expecting a VisibleRange

axis

The axis being operated on

Returns: The output IRange which can then be applied to the GrowBy property to get the same affect as applying the input visible-range

CalculateScaledRange

protected abstract IRange CalculateScaledRange(Point currentPoint, Point lastPoint, bool isSecondHalf, IAxis axis)

result = axisDragModifierBase.CalculateScaledRange(currentPoint, lastPoint, isSecondHalf, axis)

When overriden in a derived class, calculates an output IRange to apply to the associated AxisBaseAxis, given the input parameters

currentPoint

The current mouse position

lastPoint

The last mouse position

isSecondHalf

A flag, which determines how the scale operates, e.g. which half of the axis (top or bottom, left or right) was dragged

axis

The axis being operated on

Returns: The output IRange

GetCurrentAxis

protected abstract IAxis GetCurrentAxis()

result = axisDragModifierBase.GetCurrentAxis()

Gets the IAxis instance, which current modifier is associated with, on the parent UltrachartSurface

GetIsSecondHalf

protected virtual bool GetIsSecondHalf(Point point, Rect axisBounds, bool isHorizontalAxis)

result = axisDragModifierBase.GetIsSecondHalf(point, axisBounds, isHorizontalAxis)

Gets whether the specified mouse point is within the second (right-most or top-most) half of the Axis bounds

point

The mouse point

axisBounds

The axis bounds

isHorizontalAxis

Value, which indicates whether current axis is horizontal or not

Returns: True if the point is within the second (right-most or top-most) half of the axis bounds, else false

GetUsedCursor

protected virtual Cursor GetUsedCursor(IAxis axis)

result = axisDragModifierBase.GetUsedCursor(axis)

Depending on axis orientation, returns a Cursor to show during mouse-over of the axis

axis

The axis instance

OnAttached

public override void OnAttached()

axisDragModifierBase.OnAttached()

Called when the Chart Modifier is attached to the Chart Surface

OnDetached

public override void OnDetached()

axisDragModifierBase.OnDetached()

Called immediately before the Chart Modifier is detached from the Chart Surface

OnIsEnabledChanged

protected override void OnIsEnabledChanged()

axisDragModifierBase.OnIsEnabledChanged()

Called when the IsEnabled property changes on this ChartModifierBase instance

OnModifierMouseDown

public override void OnModifierMouseDown(ModifierMouseArgs e)

axisDragModifierBase.OnModifierMouseDown(e)

Called when a Mouse Button is pressed on the parent UltrachartSurface

e

Arguments detailing the mouse button operation

OnModifierMouseMove

public override void OnModifierMouseMove(ModifierMouseArgs e)

axisDragModifierBase.OnModifierMouseMove(e)

Called when the Mouse is moved on the parent UltrachartSurface

e

Arguments detailing the mouse move operation

OnModifierMouseUp

public override void OnModifierMouseUp(ModifierMouseArgs e)

axisDragModifierBase.OnModifierMouseUp(e)

Called when a Mouse Button is released on the parent UltrachartSurface

e

Arguments detailing the mouse button operation

PerformPan

protected abstract void PerformPan(Point currentPoint, Point lastPoint)

axisDragModifierBase.PerformPan(currentPoint, lastPoint)

Peforms a pan on the assocaited AxisBase. The pan is considered to be a drag from to

currentPoint

The current mouse point

lastPoint

The last mouse point

PerformScale

protected virtual void PerformScale(Point currentPoint, Point lastPoint, bool isSecondHalf)

axisDragModifierBase.PerformScale(currentPoint, lastPoint, isSecondHalf)

Performs a Scale on the associated AxisBase. The scale is considered to be a drag from to

currentPoint

The current mouse point

lastPoint

The last mouse point

isSecondHalf

Boolean flag to determine which side of the axis is scaled

SetAxisCursor

private void SetAxisCursor(Cursor cursor)

axisDragModifierBase.SetAxisCursor(cursor)

Sets passed cursor on current axis, or default cursor returned by IAxis)

AxisIdProperty

private static readonly DependencyProperty AxisIdProperty

value = AxisDragModifierBase.AxisIdProperty

Defines the YAxisId DependencyProperty

DragModeProperty

public static readonly DependencyProperty DragModeProperty

value = AxisDragModifierBase.DragModeProperty

Defines the DragMode DependencyProperty

MinTouchAreaProperty

public static readonly DependencyProperty MinTouchAreaProperty

value = AxisDragModifierBase.MinTouchAreaProperty

Defines the MinTouchArea DependencyProperty