C# Class Nez.UI.ScrollPane

A group that scrolls a child widget using scrollbars and/or mouse or touch dragging. The widget is sized to its preferred size.If the widget's preferred width or height is less than the size of this scroll pane, it is set to the size of this scroll pane. Scrollbars appear when the widget is larger than the scroll pane. The scroll pane's preferred size is that of the child widget. At this size, the child widget will not need to scroll, so scroll pane is typically sized by ignoring the preferred size in one or both directions.

Inheritance: Group, IInputListener

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Protected Properties

Property	Type	Description
_disableX	bool

Public Methods

Method	Description
ScrollPane ( Element widget ) : System
ScrollPane ( Element widget, ScrollPaneStyle style ) : System
ScrollPane ( Element widget, Skin skin ) : System
ScrollPane ( Element widget, Skin skin, string styleName ) : System
cancel ( ) : void	If currently scrolling by tracking a touch down, stop scrolling.
debugRender ( Graphics graphics ) : void
draw ( Graphics graphics, float parentAlpha ) : void
fling ( float flingTime, float velocityX, float velocityY ) : void	Generate fling gesture
getMaxX ( ) : float	Returns the maximum scroll value in the x direction.
getMaxY ( ) : float	Returns the maximum scroll value in the y direction.
getScrollBarHeight ( ) : float
getScrollBarWidth ( ) : float
getScrollHeight ( ) : float	Returns the height of the scrolled viewport.
getScrollPercentX ( ) : float
getScrollPercentY ( ) : float
getScrollSpeed ( ) : float	Returns the x scroll speed
getScrollWidth ( ) : float	Returns the width of the scrolled viewport.
getScrollX ( ) : float	Returns the x scroll position in pixels, where 0 is the left of the scroll pane.
getScrollY ( ) : float	Returns the y scroll position in pixels, where 0 is the top of the scroll pane.
getStyle ( ) : ScrollPaneStyle	Returns the scroll pane's style. Modifying the returned style may not have an effect until {@link #setStyle(ScrollPaneStyle)} is called.
getUseNaturalScrolling ( ) : bool
getVariableSizeKnobs ( ) : bool
getVelocityX ( ) : float	Gets the flick scroll x velocity
getVelocityY ( ) : float	Gets the flick scroll y velocity
getVisualScrollPercentX ( ) : float
getVisualScrollPercentY ( ) : float
getVisualScrollX ( ) : float
getVisualScrollY ( ) : float
getWidget ( ) : Element	Returns the Element embedded in this scroll pane, or null
hit ( Vector2 point ) : Element
isBottomEdge ( ) : bool
isFlinging ( ) : bool
isForceScrollX ( ) : bool
isForceScrollY ( ) : bool
isLeftEdge ( ) : bool
isRightEdge ( ) : bool
isScrollX ( ) : bool	Returns true if the widget is larger than the scroll pane horizontally.
isScrollY ( ) : bool	Returns true if the widget is larger than the scroll pane vertically.
isScrollingDisabledX ( ) : bool
isScrollingDisabledY ( ) : bool
isTopEdge ( ) : bool
layout ( ) : void
scrollTo ( float x, float y, float width, float height ) : void	Sets the scroll offset so the specified rectangle is fully in view, if possible. Coordinates are in the scroll pane widget's coordinate system.
scrollTo ( float x, float y, float width, float height, bool centerHorizontal, bool centerVertical ) : void	Sets the scroll offset so the specified rectangle is fully in view, and optionally centered vertically and/or horizontally, if possible. Coordinates are in the scroll pane widget's coordinate system.
setClamp ( bool clamp ) : ScrollPane	For flick scroll, prevents scrolling out of the widget's bounds. Default is true.
setFadeScrollBars ( bool fadeScrollBars ) : ScrollPane	When true the scrollbars don't reduce the scrollable size and fade out after some time of not being used.
setFlingTime ( float flingTime ) : ScrollPane	For flick scroll, sets the amount of time in seconds that a fling will continue to scroll. Default is 1.
setForceScroll ( bool x, bool y ) : ScrollPane	Forces enabling scrollbars (for non-flick scroll) and overscrolling (for flick scroll) in a direction, even if the contents do not exceed the bounds in that direction.
setOverscroll ( bool overscrollX, bool overscrollY ) : ScrollPane	For flick scroll, if true the widget can be scrolled slightly past its bounds and will animate back to its bounds when scrolling is stopped. Default is true.
setScrollBarPositions ( bool bottom, bool right ) : ScrollPane	Set the position of the vertical and horizontal scroll bars.
setScrollPercentX ( float percentX ) : void
setScrollPercentY ( float percentY ) : void
setScrollSpeed ( float scrollSpeed ) : ScrollPane	sets the scroll speed when the mouse wheel is used to scroll the ScrollPane
setScrollX ( float pixelsX ) : ScrollPane	sets x scroll amount
setScrollY ( float pixelsY ) : ScrollPane	Called whenever the y scroll amount is changed
setScrollbarsOnTop ( bool scrollbarsOnTop ) : ScrollPane	When false (the default), the widget is clipped so it is not drawn under the scrollbars. When true, the widget is clipped to the entire scroll pane bounds and the scrollbars are drawn on top of the widget. If {@link #setFadeScrollBars(boolean)} is true, the scroll bars are always drawn on top.
setScrollingDisabled ( bool x, bool y ) : ScrollPane	Disables scrolling in a direction. The widget will be sized to the FlickScrollPane in the disabled direction.
setSmoothScrolling ( bool smoothScrolling ) : ScrollPane
setStyle ( ScrollPaneStyle style ) : ScrollPane
setUseNaturalScrolling ( bool useNaturalScrolling ) : ScrollPane	sets how the mouse wheel/trackpad operates. Natural scrolling moves the contents of a window the same direction as your fingers.
setVariableSizeKnobs ( bool variableSizeKnobs ) : ScrollPane	If true, the scroll knobs are sized based on getMaxX() or getMaxY(). If false, the scroll knobs are sized based on Drawable#getMinWidth() or Drawable#getMinHeight(). Default is true.
setVelocityX ( float velocityX ) : void
setVelocityY ( float velocityY ) : ScrollPane
setWidget ( Element widget ) : ScrollPane	Sets the {@link Element} embedded in this scroll pane
setupFadeScrollBars ( float fadeAlphaSeconds, float fadeDelaySeconds ) : ScrollPane
setupOverscroll ( float distance, float speedMin, float speedMax ) : ScrollPane	For flick scroll, sets the overscroll distance in pixels and the speed it returns to the widget's bounds in seconds. Default is 50, 30, 200.
updateVisualScroll ( ) : ScrollPane	Sets the visual scroll amount equal to the scroll amount. This can be used when setting the scroll amount without animating.

Protected Methods

Method	Description
setVisualScrollX ( float pixelsX ) : void	Called whenever the visual x scroll amount is changed
setVisualScrollY ( float pixelsY ) : void	Called whenever the visual y scroll amount is changed
update ( ) : void

Private Methods

Method	Description
IInputListener ( Vector2 mousePos ) : bool
IInputListener ( int mouseWheelDelta ) : bool
IInputListener ( ) : void
IInputListener ( Vector2 mousePos ) : void
clamp ( ) : void
resetFade ( ) : void

Method Details

ScrollPane() public method

public ScrollPane ( Element widget ) : System
widget	Element
return	System

ScrollPane() public method

public ScrollPane ( Element widget, ScrollPaneStyle style ) : System
widget	Element
style	ScrollPaneStyle
return	System

ScrollPane() public method

public ScrollPane ( Element widget, Skin skin ) : System
widget	Element
skin	Skin
return	System

ScrollPane() public method

public ScrollPane ( Element widget, Skin skin, string styleName ) : System
widget	Element
skin	Skin
styleName	string
return	System

cancel() public method

If currently scrolling by tracking a touch down, stop scrolling.

public cancel ( ) : void
return	void

debugRender() public method

public debugRender ( Graphics graphics ) : void
graphics	Graphics
return	void

draw() public method

public draw ( Graphics graphics, float parentAlpha ) : void
graphics	Graphics
parentAlpha	float
return	void

fling() public method

Generate fling gesture

public fling ( float flingTime, float velocityX, float velocityY ) : void
flingTime	float	Fling time.
velocityX	float	Velocity x.
velocityY	float	Velocity y.
return	void

getMaxX() public method

Returns the maximum scroll value in the x direction.

public getMaxX ( ) : float
return	float

getMaxY() public method

Returns the maximum scroll value in the y direction.

public getMaxY ( ) : float
return	float

getScrollBarHeight() public method

public getScrollBarHeight ( ) : float
return	float

getScrollBarWidth() public method

public getScrollBarWidth ( ) : float
return	float

getScrollHeight() public method

Returns the height of the scrolled viewport.

public getScrollHeight ( ) : float
return	float

getScrollPercentX() public method

public getScrollPercentX ( ) : float
return	float

getScrollPercentY() public method

public getScrollPercentY ( ) : float
return	float

getScrollSpeed() public method

Returns the x scroll speed

public getScrollSpeed ( ) : float
return	float

getScrollWidth() public method

Returns the width of the scrolled viewport.

public getScrollWidth ( ) : float
return	float

getScrollX() public method

Returns the x scroll position in pixels, where 0 is the left of the scroll pane.

public getScrollX ( ) : float
return	float

getScrollY() public method

Returns the y scroll position in pixels, where 0 is the top of the scroll pane.

public getScrollY ( ) : float
return	float

getStyle() public method

Returns the scroll pane's style. Modifying the returned style may not have an effect until {@link #setStyle(ScrollPaneStyle)} is called.

public getStyle ( ) : ScrollPaneStyle
return	ScrollPaneStyle

getUseNaturalScrolling() public method

public getUseNaturalScrolling ( ) : bool
return	bool

getVariableSizeKnobs() public method

public getVariableSizeKnobs ( ) : bool
return	bool

getVelocityX() public method

Gets the flick scroll x velocity

public getVelocityX ( ) : float
return	float

getVelocityY() public method

Gets the flick scroll y velocity

public getVelocityY ( ) : float
return	float

getVisualScrollPercentX() public method

public getVisualScrollPercentX ( ) : float
return	float

getVisualScrollPercentY() public method

public getVisualScrollPercentY ( ) : float
return	float

getVisualScrollX() public method

public getVisualScrollX ( ) : float
return	float

getVisualScrollY() public method

public getVisualScrollY ( ) : float
return	float

getWidget() public method

Returns the Element embedded in this scroll pane, or null

public getWidget ( ) : Element
return	Element

hit() public method

public hit ( Vector2 point ) : Element
point	Vector2
return	Element

isBottomEdge() public method

public isBottomEdge ( ) : bool
return	bool

isFlinging() public method

public isFlinging ( ) : bool
return	bool

isForceScrollX() public method

public isForceScrollX ( ) : bool
return	bool

isForceScrollY() public method

public isForceScrollY ( ) : bool
return	bool

isLeftEdge() public method

public isLeftEdge ( ) : bool
return	bool

isRightEdge() public method

public isRightEdge ( ) : bool
return	bool

isScrollX() public method

Returns true if the widget is larger than the scroll pane horizontally.

public isScrollX ( ) : bool
return	bool

isScrollY() public method

Returns true if the widget is larger than the scroll pane vertically.

public isScrollY ( ) : bool
return	bool

isScrollingDisabledX() public method

public isScrollingDisabledX ( ) : bool
return	bool

isScrollingDisabledY() public method

public isScrollingDisabledY ( ) : bool
return	bool

isTopEdge() public method

public isTopEdge ( ) : bool
return	bool

layout() public method

public layout ( ) : void
return	void

scrollTo() public method

Sets the scroll offset so the specified rectangle is fully in view, if possible. Coordinates are in the scroll pane widget's coordinate system.

public scrollTo ( float x, float y, float width, float height ) : void
x	float	The x coordinate.
y	float	The y coordinate.
width	float	Width.
height	float	Height.
return	void

scrollTo() public method

Sets the scroll offset so the specified rectangle is fully in view, and optionally centered vertically and/or horizontally, if possible. Coordinates are in the scroll pane widget's coordinate system.

public scrollTo ( float x, float y, float width, float height, bool centerHorizontal, bool centerVertical ) : void
x	float	The x coordinate.
y	float	The y coordinate.
width	float	Width.
height	float	Height.
centerHorizontal	bool	Center horizontal.
centerVertical	bool	Center vertical.
return	void

setClamp() public method

For flick scroll, prevents scrolling out of the widget's bounds. Default is true.

public setClamp ( bool clamp ) : ScrollPane
clamp	bool	Clamp.
return	ScrollPane

setFadeScrollBars() public method

When true the scrollbars don't reduce the scrollable size and fade out after some time of not being used.

public setFadeScrollBars ( bool fadeScrollBars ) : ScrollPane
fadeScrollBars	bool	Fade scroll bars.
return	ScrollPane

setFlingTime() public method

For flick scroll, sets the amount of time in seconds that a fling will continue to scroll. Default is 1.

public setFlingTime ( float flingTime ) : ScrollPane
flingTime	float	Fling time.
return	ScrollPane

setForceScroll() public method

Forces enabling scrollbars (for non-flick scroll) and overscrolling (for flick scroll) in a direction, even if the contents do not exceed the bounds in that direction.

public setForceScroll ( bool x, bool y ) : ScrollPane
x	bool	The x coordinate.
y	bool	The y coordinate.
return	ScrollPane

setOverscroll() public method

For flick scroll, if true the widget can be scrolled slightly past its bounds and will animate back to its bounds when scrolling is stopped. Default is true.

public setOverscroll ( bool overscrollX, bool overscrollY ) : ScrollPane
overscrollX	bool	Overscroll x.
overscrollY	bool	Overscroll y.
return	ScrollPane

setScrollBarPositions() public method

Set the position of the vertical and horizontal scroll bars.

public setScrollBarPositions ( bool bottom, bool right ) : ScrollPane
bottom	bool	Bottom.
right	bool	Right.
return	ScrollPane

setScrollPercentX() public method

public setScrollPercentX ( float percentX ) : void
percentX	float
return	void

setScrollPercentY() public method

public setScrollPercentY ( float percentY ) : void
percentY	float
return	void

setScrollSpeed() public method

sets the scroll speed when the mouse wheel is used to scroll the ScrollPane

public setScrollSpeed ( float scrollSpeed ) : ScrollPane
scrollSpeed	float	Scroll speed.
return	ScrollPane

setScrollX() public method

sets x scroll amount

public setScrollX ( float pixelsX ) : ScrollPane
pixelsX	float	Pixels x.
return	ScrollPane

setScrollY() public method

Called whenever the y scroll amount is changed

public setScrollY ( float pixelsY ) : ScrollPane
pixelsY	float	Pixels y.
return	ScrollPane

setScrollbarsOnTop() public method

When false (the default), the widget is clipped so it is not drawn under the scrollbars. When true, the widget is clipped to the entire scroll pane bounds and the scrollbars are drawn on top of the widget. If {@link #setFadeScrollBars(boolean)} is true, the scroll bars are always drawn on top.

public setScrollbarsOnTop ( bool scrollbarsOnTop ) : ScrollPane
scrollbarsOnTop	bool	Scrollbars on top.
return	ScrollPane

setScrollingDisabled() public method

Disables scrolling in a direction. The widget will be sized to the FlickScrollPane in the disabled direction.

public setScrollingDisabled ( bool x, bool y ) : ScrollPane
x	bool	The x coordinate.
y	bool	The y coordinate.
return	ScrollPane

setSmoothScrolling() public method

public setSmoothScrolling ( bool smoothScrolling ) : ScrollPane
smoothScrolling	bool
return	ScrollPane

setStyle() public method

public setStyle ( ScrollPaneStyle style ) : ScrollPane
style	ScrollPaneStyle
return	ScrollPane

setUseNaturalScrolling() public method

sets how the mouse wheel/trackpad operates. Natural scrolling moves the contents of a window the same direction as your fingers.

public setUseNaturalScrolling ( bool useNaturalScrolling ) : ScrollPane
useNaturalScrolling	bool	Use natural scrolling.
return	ScrollPane

setVariableSizeKnobs() public method

If true, the scroll knobs are sized based on getMaxX() or getMaxY(). If false, the scroll knobs are sized based on Drawable#getMinWidth() or Drawable#getMinHeight(). Default is true.

public setVariableSizeKnobs ( bool variableSizeKnobs ) : ScrollPane
variableSizeKnobs	bool	Variable size knobs.
return	ScrollPane

setVelocityX() public method

public setVelocityX ( float velocityX ) : void
velocityX	float
return	void

setVelocityY() public method

public setVelocityY ( float velocityY ) : ScrollPane
velocityY	float
return	ScrollPane

setVisualScrollX() protected method

Called whenever the visual x scroll amount is changed

protected setVisualScrollX ( float pixelsX ) : void
pixelsX	float	Pixels x.
return	void

setVisualScrollY() protected method

Called whenever the visual y scroll amount is changed

protected setVisualScrollY ( float pixelsY ) : void
pixelsY	float	Pixels y.
return	void

setWidget() public method

Sets the {@link Element} embedded in this scroll pane

public setWidget ( Element widget ) : ScrollPane
widget	Element	Widget.
return	ScrollPane

setupFadeScrollBars() public method

public setupFadeScrollBars ( float fadeAlphaSeconds, float fadeDelaySeconds ) : ScrollPane
fadeAlphaSeconds	float
fadeDelaySeconds	float
return	ScrollPane

setupOverscroll() public method

For flick scroll, sets the overscroll distance in pixels and the speed it returns to the widget's bounds in seconds. Default is 50, 30, 200.

public setupOverscroll ( float distance, float speedMin, float speedMax ) : ScrollPane
distance	float	Distance.
speedMin	float	Speed minimum.
speedMax	float	Speed max.
return	ScrollPane

update() protected method

protected update ( ) : void
return	void

updateVisualScroll() public method

Sets the visual scroll amount equal to the scroll amount. This can be used when setting the scroll amount without animating.

public updateVisualScroll ( ) : ScrollPane
return	ScrollPane

Property Details

_disableX protected_oe property

protected bool _disableX
return	bool