AxisDragModifierBase
Provides base class for dragging operations on axes
継承元: ChartModifierBase
コンストラクター
AxisDragModifierBase()
Initializes a new instance of the AxisDragModifierBase class.
プロパティ
DragMode : AxisDragModes
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 : bool
Gets a value indicating whether the user is currently dragging the axis
MinTouchArea : double
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.
メソッド
CalculateRelativeRange(IRange, IAxis) : DoubleRange
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
戻り値: The output IRange which can then be applied to the GrowBy property to get the same affect as applying the input visible-range
CalculateScaledRange(Point, Point, bool, IAxis) : IRange
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
戻り値: The output IRange
GetCurrentAxis() : IAxis
Gets the IAxis instance, which current modifier is associated with, on the parent UltrachartSurface
GetIsSecondHalf(Point, Rect, bool) : bool
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
戻り値: True if the point is within the second (right-most or top-most) half of the axis bounds, else false
GetUsedCursor(IAxis) : Cursor
Depending on axis orientation, returns a Cursor to show during mouse-over of the axis
- axis
- The axis instance
OnAttached()
Called when the Chart Modifier is attached to the Chart Surface
OnDetached()
Called immediately before the Chart Modifier is detached from the Chart Surface
OnIsEnabledChanged()
Called when the IsEnabled property changes on this ChartModifierBase instance
OnModifierMouseDown(ModifierMouseArgs)
Called when a Mouse Button is pressed on the parent UltrachartSurface
- e
- Arguments detailing the mouse button operation
OnModifierMouseMove(ModifierMouseArgs)
Called when the Mouse is moved on the parent UltrachartSurface
- e
- Arguments detailing the mouse move operation
OnModifierMouseUp(ModifierMouseArgs)
Called when a Mouse Button is released on the parent UltrachartSurface
- e
- Arguments detailing the mouse button operation
PerformPan(Point, Point)
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(Point, Point, bool)
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(Cursor)
Sets passed cursor on current axis, or default cursor returned by IAxis)
フィールド
AxisIdProperty : DependencyProperty
Defines the YAxisId DependencyProperty
DragModeProperty : DependencyProperty
Defines the DragMode DependencyProperty
MinTouchAreaProperty : DependencyProperty
Defines the MinTouchArea DependencyProperty