Package org.verapdf.wcag.algorithms.semanticalgorithms.consumers

Class ContrastRatioConsumer

java.lang.Object

org.verapdf.wcag.algorithms.semanticalgorithms.consumers.WCAGConsumer

org.verapdf.wcag.algorithms.semanticalgorithms.consumers.ContrastRatioConsumer

All Implemented Interfaces:

Closeable, AutoCloseable, Consumer<INode>

public class ContrastRatioConsumer
extends WCAGConsumer
implements Consumer<INode>, Closeable

Field Summary

Fields

Modifier and Type	Field	Description
static final int	PDF_DPI

Constructor Summary

Constructors

Constructor	Description
ContrastRatioConsumer()
ContrastRatioConsumer(String sourcePdfPath)
ContrastRatioConsumer(String password, boolean enableAntialias, Float imagePixelSize)
ContrastRatioConsumer(String sourcePdfPath, String password, boolean enableAntialias, Float imagePixelSize)

Method Summary

Modifier and Type	Method	Description
void	accept(INode node)
void	calculateContrast(ITree tree)
void	calculateContrastRatio(TextChunk textChunk)
void	calculateContrastRation(TextChunk textChunk, BufferedImage renderedPage)
void	close()
double	getContrastRatio(double first, double second)
float	getDPI(org.apache.pdfbox.pdmodel.PDDocument document, Integer pageNumber)
double	getDpiScalingForPage(int pageNumber)
Float	getImagePixelSize()
BufferedImage	getPageSubImage(BoundingBox bBox)
Double	getPercent()
BufferedImage	getRenderPage(int pageNumber)
WCAGProgressStatus	getWCAGProgressStatus()
boolean	isUseConstantRenderDpi()
boolean	run()

Methods inherited from class org.verapdf.wcag.algorithms.semanticalgorithms.consumers.WCAGConsumer

startStep

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.function.Consumer

andThen

Field Details

PDF_DPI

public static final int PDF_DPI

See Also:

• Constant Field Values

Constructor Details

ContrastRatioConsumer

public ContrastRatioConsumer()
                      throws IOException

Throws:

IOException

ContrastRatioConsumer

public ContrastRatioConsumer(String sourcePdfPath)
                      throws IOException

Throws:

IOException

ContrastRatioConsumer

public ContrastRatioConsumer(String sourcePdfPath,
 String password,
 boolean enableAntialias,
 Float imagePixelSize)
                      throws IOException

Throws:

IOException

ContrastRatioConsumer

public ContrastRatioConsumer(String password,
 boolean enableAntialias,
 Float imagePixelSize)

Method Details

run

public boolean run()

Overrides:

run in class WCAGConsumer

calculateContrast

public void calculateContrast(ITree tree)

accept

public void accept(INode node)

Specified by:

accept in interface Consumer<INode>

getContrastRatio

public double getContrastRatio(double first,
 double second)

getRenderPage

public BufferedImage getRenderPage(int pageNumber)

calculateContrastRatio

public void calculateContrastRatio(TextChunk textChunk)

getDpiScalingForPage

public double getDpiScalingForPage(int pageNumber)

isUseConstantRenderDpi

public boolean isUseConstantRenderDpi()

calculateContrastRation

public void calculateContrastRation(TextChunk textChunk,
 BufferedImage renderedPage)

getPageSubImage

public BufferedImage getPageSubImage(BoundingBox bBox)

getDPI

public float getDPI(org.apache.pdfbox.pdmodel.PDDocument document,
 Integer pageNumber)

getPercent

public Double getPercent()

Overrides:

getPercent in class WCAGConsumer

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Throws:

IOException

getImagePixelSize

public Float getImagePixelSize()

getWCAGProgressStatus

public WCAGProgressStatus getWCAGProgressStatus()

Overrides:

getWCAGProgressStatus in class WCAGConsumer