com.alexvasilkov.gestures.animation

Class ViewPosition

java.lang.Object

com.alexvasilkov.gestures.animation.ViewPosition

public class ViewPosition
extends java.lang.Object

Helper class to compute and store view position used for transitions.

It consists of view rectangle, viewport rectangle (view rectangle minus padding), visible rectangle (part of viewport which is visible on screen) and image rectangle (position of the underlying image taking into account ImageView.getScaleType(), or same as viewport if view is not an ImageView or if ImageView.getDrawable() is null). All positions are in screen coordinates.

To create instance of this class use from(View) static method. But note, that view should already be laid out and have correct View.getWidth() and View.getHeight() values.

You can also serialize and deserialize this class to string using pack() and unpack(String) methods. This can be useful to pass view position between activities.

Field Summary

Fields

Modifier and Type	Field and Description
android.graphics.Rect	image
android.graphics.Rect	view
android.graphics.Rect	viewport
android.graphics.Rect	visible

Method Summary

Modifier and Type	Method and Description
static void	apply(ViewPosition pos, android.graphics.Point point) Computes minimal view position for given point.
static boolean	apply(ViewPosition pos, android.view.View view) Computes view position and stores it in given pos.
static ViewPosition	from(android.view.View view) Computes and returns view position.
static ViewPosition	newInstance()
java.lang.String	pack() Packs this ViewPosition into string, which can be passed i.e.
void	set(ViewPosition pos)
static ViewPosition	unpack(java.lang.String str) Restores ViewPosition from the string created by pack() method.

Methods inherited from class java.lang.Object

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

Field Detail

view

public final android.graphics.Rect view

viewport

public final android.graphics.Rect viewport

visible

public final android.graphics.Rect visible

image

public final android.graphics.Rect image

Method Detail

set

public void set(ViewPosition pos)

newInstance

public static ViewPosition newInstance()

from

public static ViewPosition from(android.view.View view)

Computes and returns view position. Note, that view should be already attached and laid out before calling this method.

apply

public static boolean apply(ViewPosition pos,
                            android.view.View view)

Computes view position and stores it in given pos. Note, that view should be already attached and laid out before calling this method.

Returns:

true if view position is changed, false otherwise

apply

public static void apply(ViewPosition pos,
                         android.graphics.Point point)

Computes minimal view position for given point.

pack

public java.lang.String pack()

Packs this ViewPosition into string, which can be passed i.e. between activities.

See Also:

unpack(String)

unpack

public static ViewPosition unpack(java.lang.String str)

Restores ViewPosition from the string created by pack() method.