Package org.mozilla.geckoview

Class GeckoSession.ScrollPositionUpdate

Object

org.mozilla.geckoview.GeckoSession.ScrollPositionUpdate

Enclosing class:

GeckoSession

public class GeckoSession.ScrollPositionUpdate
extends Object

Information about an update to the content's scroll position.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static @interface	GeckoSession.ScrollPositionUpdate.SourceType	Valid source types for scroll position updates.

Field Summary

Fields

Modifier and Type	Field	Description
final float	scrollX	The new horizontal scroll position in CSS pixels.
final float	scrollY	The new vertical scroll position in CSS pixels.
final int	source	The source of the scroll position change.
static final int	SOURCE_OTHER	The scroll position changed progammatically.
static final int	SOURCE_USER_INTERACTION	The scroll position changed as a direct result of user interaction.
final float	zoom	The new zoom level.

Constructor Summary

Constructors

Constructor	Description
ScrollPositionUpdate(float scrollX, float scrollY, float zoom, int source)	Construct a new, immutable ScrollPositionUpdate.

Method Summary

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

SOURCE_USER_INTERACTION

public static final int SOURCE_USER_INTERACTION

The scroll position changed as a direct result of user interaction.

See Also:

• Constant Field Values

SOURCE_OTHER

public static final int SOURCE_OTHER

The scroll position changed progammatically. This can include changes caused by script on the page, and changes caused by the browser engine such as scrolling an element into view.

See Also:

• Constant Field Values

scrollX

public final float scrollX

The new horizontal scroll position in CSS pixels.

scrollY

public final float scrollY

The new vertical scroll position in CSS pixels.

zoom

public final float zoom

The new zoom level. This is used to relate scrollX and scrollY, which are in CSS pixels, to quantities in screen pixels. Multiply scrollX/scrollY by zoom to get screen pixels.

source

public final int source

The source of the scroll position change. One of SOURCE_USER_INTERACTION or SOURCE_OTHER.

Constructor Details

ScrollPositionUpdate

public ScrollPositionUpdate(float scrollX,
 float scrollY,
 float zoom,
 int source)

Construct a new, immutable ScrollPositionUpdate.

Parameters:

scrollX - The new horizontal scroll position in CSS pixels.

scrollY - The new vertical scroll position in CSS pixels.

zoom - The new zoom level.

source - The source of the scroll position change, one of SOURCE_USER_INTERACTION or SOURCE_OTHER.