Package org.flowable.dmn.image.impl

Class DefaultDecisionRequirementsDiagramCanvas

java.lang.Object

org.flowable.dmn.image.impl.DefaultDecisionRequirementsDiagramCanvas

public class DefaultDecisionRequirementsDiagramCanvas
extends Object

Represents a canvas on which DMN 1.2 constructs can be drawn. Some of the icons used are licensed under a Creative Commons Attribution 2.5 License, see http://www.famfamfam.com/lab/icons/silk/

Author:

Yvo Swillens, Tijs Rademakers

See Also:

DefaultDecisionRequirementsDiagramGenerator

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	DefaultDecisionRequirementsDiagramCanvas.SHAPE_TYPE

Field Summary

Fields

Modifier and Type	Field	Description
protected String	activityFontName
protected static Font	ANNOTATION_FONT
protected String	annotationFontName
protected static int	ARROW_WIDTH
protected int	canvasHeight
protected int	canvasWidth
protected boolean	closed
protected static Color	CONNECTION_COLOR
protected ClassLoader	customClassLoader
protected static BufferedImage	DECISION_IMAGE
protected BufferedImage	decisionRequirementsDiagram
protected static int	FONT_SIZE
protected static int	FONT_SPACING
protected FontMetrics	fontMetrics
protected Graphics2D	g
protected static Color	HIGHLIGHT_COLOR
protected static int	ICON_PADDING
protected static Color	LABEL_COLOR
protected static Font	LABEL_FONT
protected String	labelFontName
protected static org.slf4j.Logger	LOGGER
protected static int	MARKER_WIDTH
protected int	minX
protected int	minY
protected static Color	TASK_BORDER_COLOR
protected static Color	TASK_BOX_COLOR
protected static int	TEXT_PADDING
protected static Stroke	THICK_TASK_BORDER_STROKE

Constructor Summary

Constructors

Constructor	Description
DefaultDecisionRequirementsDiagramCanvas(int width, int height, int minX, int minY, String imageType)	Creates an empty canvas with given width and height.
DefaultDecisionRequirementsDiagramCanvas(int width, int height, int minX, int minY, String imageType, String activityFontName, String labelFontName, String annotationFontName, ClassLoader customClassLoader)	Creates an empty canvas with given width and height.

Method Summary

Modifier and Type	Method	Description
void	close()	Closes the canvas which disallows further drawing and releases graphical resources.
List<GraphicInfo>	connectionPerfectionizer(DefaultDecisionRequirementsDiagramCanvas.SHAPE_TYPE sourceShapeType, DefaultDecisionRequirementsDiagramCanvas.SHAPE_TYPE targetShapeType, GraphicInfo sourceGraphicInfo, GraphicInfo targetGraphicInfo, List<GraphicInfo> graphicInfoList)	This method makes coordinates of connection flow better.
void	drawArrowHead(Line2D.Double line, double scaleFactor)
void	drawConnection(int[] xPoints, int[] yPoints, String connectionType, double scaleFactor)
void	drawDecision(BufferedImage icon, String name, GraphicInfo graphicInfo, double scaleFactor)
protected void	drawDecision(String name, GraphicInfo graphicInfo, boolean thickBorder, double scaleFactor)
void	drawDecision(String name, GraphicInfo graphicInfo, double scaleFactor)
void	drawDecisionService(String name, GraphicInfo graphicInfo, List<GraphicInfo> dividerGraphicInfos, double scaleFactor)
void	drawHighLight(int x, int y, int width, int height)
void	drawInformationRequirement(int[] xPoints, int[] yPoints, double scaleFactor)
protected void	drawMultilineAnnotationText(String text, int x, int y, int boxWidth, int boxHeight)
protected void	drawMultilineCentredText(String text, int x, int y, int boxWidth, int boxHeight)
protected void	drawMultilineText(String text, int x, int y, int boxWidth, int boxHeight, boolean centered)
protected String	fitTextToWidth(String original, int width)
BufferedImage	generateBufferedImage(String imageType)	Generates an image of what currently is drawn on the canvas.
InputStream	generateImage(String imageType)	Generates an image of what currently is drawn on the canvas.
void	initialize(String imageType)

Methods inherited from class java.lang.Object

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

Field Detail

LOGGER

protected static final org.slf4j.Logger LOGGER

ARROW_WIDTH

protected static final int ARROW_WIDTH

See Also:

Constant Field Values

MARKER_WIDTH

protected static final int MARKER_WIDTH

See Also:

Constant Field Values

FONT_SIZE

protected static final int FONT_SIZE

See Also:

Constant Field Values

FONT_SPACING

protected static final int FONT_SPACING

See Also:

Constant Field Values

TEXT_PADDING

protected static final int TEXT_PADDING

See Also:

Constant Field Values

TASK_BOX_COLOR

protected static final Color TASK_BOX_COLOR

CONNECTION_COLOR

protected static final Color CONNECTION_COLOR

HIGHLIGHT_COLOR

protected static final Color HIGHLIGHT_COLOR

LABEL_COLOR

protected static final Color LABEL_COLOR

TASK_BORDER_COLOR

protected static final Color TASK_BORDER_COLOR

LABEL_FONT

protected static Font LABEL_FONT

ANNOTATION_FONT

protected static Font ANNOTATION_FONT

THICK_TASK_BORDER_STROKE

protected static final Stroke THICK_TASK_BORDER_STROKE

ICON_PADDING

protected static final int ICON_PADDING

See Also:

Constant Field Values

DECISION_IMAGE

protected static BufferedImage DECISION_IMAGE

canvasWidth

protected int canvasWidth

canvasHeight

protected int canvasHeight

minX

protected int minX

minY

protected int minY

decisionRequirementsDiagram

protected BufferedImage decisionRequirementsDiagram

g

protected Graphics2D g

fontMetrics

protected FontMetrics fontMetrics

closed

protected boolean closed

customClassLoader

protected ClassLoader customClassLoader

activityFontName

protected String activityFontName

labelFontName

protected String labelFontName

annotationFontName

protected String annotationFontName

Constructor Detail

DefaultDecisionRequirementsDiagramCanvas

public DefaultDecisionRequirementsDiagramCanvas(int width,
                                                int height,
                                                int minX,
                                                int minY,
                                                String imageType,
                                                String activityFontName,
                                                String labelFontName,
                                                String annotationFontName,
                                                ClassLoader customClassLoader)

Creates an empty canvas with given width and height. Allows to specify minimal boundaries on the left and upper side of the canvas. This is useful for diagrams that have white space there. Everything beneath these minimum values will be cropped. It's also possible to pass a specific font name and a class loader for the icon images.

DefaultDecisionRequirementsDiagramCanvas

public DefaultDecisionRequirementsDiagramCanvas(int width,
                                                int height,
                                                int minX,
                                                int minY,
                                                String imageType)

Creates an empty canvas with given width and height. Allows to specify minimal boundaries on the left and upper side of the canvas. This is useful for diagrams that have white space there (eg Signavio). Everything beneath these minimum values will be cropped.

Parameters:

minX - Hint that will be used when generating the image. Parts that fall below minX on the horizontal scale will be cropped.

minY - Hint that will be used when generating the image. Parts that fall below minX on the horizontal scale will be cropped.

Method Detail

initialize

public void initialize(String imageType)

generateImage

public InputStream generateImage(String imageType)

Generates an image of what currently is drawn on the canvas. Throws an FlowableImageException when close() is already called.

generateBufferedImage

public BufferedImage generateBufferedImage(String imageType)

Generates an image of what currently is drawn on the canvas. Throws an FlowableImageException when close() is already called.

close

public void close()

Closes the canvas which disallows further drawing and releases graphical resources.

drawInformationRequirement

public void drawInformationRequirement(int[] xPoints,
                                       int[] yPoints,
                                       double scaleFactor)

drawConnection

public void drawConnection(int[] xPoints,
                           int[] yPoints,
                           String connectionType,
                           double scaleFactor)

drawArrowHead

public void drawArrowHead(Line2D.Double line,
                          double scaleFactor)

drawDecision

public void drawDecision(BufferedImage icon,
                         String name,
                         GraphicInfo graphicInfo,
                         double scaleFactor)

drawDecision

public void drawDecision(String name,
                         GraphicInfo graphicInfo,
                         double scaleFactor)

drawDecisionService

public void drawDecisionService(String name,
                                GraphicInfo graphicInfo,
                                List<GraphicInfo> dividerGraphicInfos,
                                double scaleFactor)

drawDecision

protected void drawDecision(String name,
                            GraphicInfo graphicInfo,
                            boolean thickBorder,
                            double scaleFactor)

drawMultilineCentredText

protected void drawMultilineCentredText(String text,
                                        int x,
                                        int y,
                                        int boxWidth,
                                        int boxHeight)

drawMultilineAnnotationText

protected void drawMultilineAnnotationText(String text,
                                           int x,
                                           int y,
                                           int boxWidth,
                                           int boxHeight)

drawMultilineText

protected void drawMultilineText(String text,
                                 int x,
                                 int y,
                                 int boxWidth,
                                 int boxHeight,
                                 boolean centered)

fitTextToWidth

protected String fitTextToWidth(String original,
                                int width)

drawHighLight

public void drawHighLight(int x,
                          int y,
                          int width,
                          int height)

connectionPerfectionizer

public List<GraphicInfo> connectionPerfectionizer(DefaultDecisionRequirementsDiagramCanvas.SHAPE_TYPE sourceShapeType,
                                                  DefaultDecisionRequirementsDiagramCanvas.SHAPE_TYPE targetShapeType,
                                                  GraphicInfo sourceGraphicInfo,
                                                  GraphicInfo targetGraphicInfo,
                                                  List<GraphicInfo> graphicInfoList)

This method makes coordinates of connection flow better.

Parameters:

sourceShapeType -

targetShapeType -

sourceGraphicInfo -

targetGraphicInfo -

graphicInfoList -