com.facebook.litho.utils

Class MeasureUtils

java.lang.Object

com.facebook.litho.utils.MeasureUtils

public final class MeasureUtils
extends Object

Constructor Summary

Constructors

Constructor and Description
MeasureUtils()

Method Summary

Modifier and Type	Method and Description
static int	getViewMeasureSpec(int sizeSpec)
static void	measureWithAspectRatio(int widthSpec, int heightSpec, float aspectRatio, Size outputSize) Measure according to an aspect ratio an width and height constraints.
static void	measureWithAspectRatio(int widthSpec, int heightSpec, int intrinsicWidth, int intrinsicHeight, float aspectRatio, Size outputSize) Measure according to an aspect ratio an width and height constraints.
static void	measureWithDesiredPx(int widthSpec, int heightSpec, int desiredWidthPx, int desiredHeightPx, Size outputSize) Set the to respect both Specs and the desired width and height.
static void	measureWithEqualDimens(int widthSpec, int heightSpec, Size outputSize) Set the to respect both Specs and try to keep both width and height equal.

Methods inherited from class java.lang.Object

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

Constructor Detail

MeasureUtils

public MeasureUtils()

Method Detail

getViewMeasureSpec

public static int getViewMeasureSpec(int sizeSpec)

measureWithDesiredPx

public static void measureWithDesiredPx(int widthSpec,
                                        int heightSpec,
                                        int desiredWidthPx,
                                        int desiredHeightPx,
                                        Size outputSize)

Set the to respect both Specs and the desired width and height. The desired size is usually the necessary pixels to render the inner content.

measureWithEqualDimens

public static void measureWithEqualDimens(int widthSpec,
                                          int heightSpec,
                                          Size outputSize)

Set the to respect both Specs and try to keep both width and height equal. This will only not guarantee equal width and height if thes Specs use modes and sizes which prevent it.

measureWithAspectRatio

public static void measureWithAspectRatio(int widthSpec,
                                          int heightSpec,
                                          int intrinsicWidth,
                                          int intrinsicHeight,
                                          float aspectRatio,
                                          Size outputSize)

Measure according to an aspect ratio an width and height constraints. This version of measureWithAspectRatio will respect the intrinsic size of the component being measured.

Parameters:

widthSpec - A SizeSpec for the width

heightSpec - A SizeSpec for the height

intrinsicWidth - A pixel value for the intrinsic width of the measured component

intrinsicHeight - A pixel value for the intrinsic height of the measured component

aspectRatio - The aspect ration size against

outputSize - The output size of this measurement

measureWithAspectRatio

public static void measureWithAspectRatio(int widthSpec,
                                          int heightSpec,
                                          float aspectRatio,
                                          Size outputSize)

Measure according to an aspect ratio an width and height constraints.

Parameters:

widthSpec - A SizeSpec for the width

heightSpec - A SizeSpec for the height

aspectRatio - The aspect ration size against

outputSize - The output size of this measurement