com.androidplot.util

Class PixelUtils

java.lang.Object

com.androidplot.util.PixelUtils

public class PixelUtils
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
protected static Pattern	DIMENSION_PATTERN
protected static String	DIMENSION_REGEX
static Map<String,Integer>	dimensionConstantLookup CODE BELOW IS ADAPTED IN PART FROM MINDRIOT'S SAMPLE CODE HERE: http://stackoverflow.com/questions/8343971/how-to-parse-a-dimension-string-and-convert-it-to-a-dimension-value

Constructor Summary

Constructors

Constructor and Description
PixelUtils()

Method Summary

Modifier and Type	Method and Description
static android.graphics.PointF	add(android.graphics.PointF lhs, android.graphics.PointF rhs)
static float	dpToPix(float dp) Converts a dp value to pixels.
static float	fractionToPixH(float fraction)
static float	fractionToPixW(float fraction)
static void	init(android.content.Context ctx) Recalculates scale value etc.
static android.graphics.RectF	nearestPixRect(float left, float top, float right, float bottom)
static android.graphics.RectF	sink(android.graphics.RectF in) Converts a sub-pixel accurate RectF to a single pixel accurate rect.
static float	spToPix(float sp) Converts an sp value to pixels.
static float	stringToDimension(String dimension)
static android.graphics.PointF	sub(android.graphics.PointF lhs, android.graphics.PointF rhs)

Methods inherited from class java.lang.Object

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

Field Detail

dimensionConstantLookup

public static final Map<String,Integer> dimensionConstantLookup

CODE BELOW IS ADAPTED IN PART FROM MINDRIOT'S SAMPLE CODE HERE: http://stackoverflow.com/questions/8343971/how-to-parse-a-dimension-string-and-convert-it-to-a-dimension-value

DIMENSION_REGEX

protected static final String DIMENSION_REGEX

See Also:

Constant Field Values

DIMENSION_PATTERN

protected static final Pattern DIMENSION_PATTERN

Constructor Detail

PixelUtils

public PixelUtils()

Method Detail

init

public static void init(android.content.Context ctx)

Recalculates scale value etc. Should be called when an application starts or whenever the screen is rotated.

add

public static android.graphics.PointF add(android.graphics.PointF lhs,
                                          android.graphics.PointF rhs)

sub

public static android.graphics.PointF sub(android.graphics.PointF lhs,
                                          android.graphics.PointF rhs)

sink

public static android.graphics.RectF sink(android.graphics.RectF in)

Converts a sub-pixel accurate RectF to a single pixel accurate rect. This is helpful for clipping operations which dont do a good job with subpixel vals.

Parameters:

in -

Returns:

nearestPixRect

public static android.graphics.RectF nearestPixRect(float left,
                                                    float top,
                                                    float right,
                                                    float bottom)

dpToPix

public static float dpToPix(float dp)

Converts a dp value to pixels.

Parameters:

dp -

Returns:

Pixel value of dp.

spToPix

public static float spToPix(float sp)

Converts an sp value to pixels.

Parameters:

sp -

Returns:

Pixel value of sp.

fractionToPixH

public static float fractionToPixH(float fraction)

Parameters:

fraction - A float value between 0 and 1.

Returns:

Number of pixels fraction represents on the current device's display.

fractionToPixW

public static float fractionToPixW(float fraction)

Parameters:

fraction - A float value between 0 and 1.

Returns:

Number of pixels fraction represents on the current device's display.

stringToDimension

public static float stringToDimension(String dimension)