jwo.landserf.gui
Class GraphicsArea

java.lang.Object
  java.awt.Component
      java.awt.Container
          javax.swing.JComponent
              javax.swing.JPanel
                  jwo.landserf.gui.GraphicsArea

All Implemented Interfaces:

ImageObserver, MenuContainer, Serializable, Accessible

public class GraphicsArea
extends JPanel

Panel for the displaying and graphical querying of spatial objects.

Version:

2.3, 29th September, 2008.

Author:

Jo Wood.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class javax.swing.JPanel

JPanel.AccessibleJPanel

Nested classes/interfaces inherited from class javax.swing.JComponent

JComponent.AccessibleJComponent

Nested classes/interfaces inherited from class java.awt.Container

Container.AccessibleAWTContainer

Nested classes/interfaces inherited from class java.awt.Component

Component.AccessibleAWTComponent, Component.BltBufferStrategy, Component.FlipBufferStrategy

Field Summary

static int	ADD RGB addition.
static int	BLEND Blend surface and drape.
static int	BROADCAST_QUERY Indicates broadcast query mode (listeners informed).
static int	CLEAR No raster display.
static int	DIGIT_PAN Indicates panning while in digitizing mode.
static int	DIGITIZE Indicates digitizing mode.
static int	HUEINT Hue-Intensity map.
static int	HUESAT Hue-Saturation map.
static int	MULTISCALE_QUERY Indicates multiscale query mode.
static int	NORMAL Indicates normal display mode.
static int	PAN Indicates panning display mode.
static int	PROFILE Indicates cross-sectional profile mode.
static int	QUERY Indicates query mode.
static int	RASTER Interpolated k-colour raster.
static int	SHADED Shaded relief blended with k-colour raster
static int	ZOOM Indicates zooming display mode.

Fields inherited from class javax.swing.JComponent

accessibleContext, listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW

Fields inherited from class java.awt.Component

BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Fields inherited from interface java.awt.image.ImageObserver

ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

Constructor Summary

GraphicsArea()
Creates a stand-alone panel for displaying spatial models.

GraphicsArea(GISFrame parent)
Creates a panel for displaying spatial models.

Method Summary

void	addRubberbandListener(RubberbandListener rbListener) Adds a rubber band listener to the list of objects to be informed when a new rubber band is created.
void	addScaleQuery(JWDialogueListener listener, int paramType) Adds a link between graphics area and mouse for multi-scale raster query.
boolean	displayRast() Displays the currently selected raster(s) according to the currently selected display type.
Footprint	getCompleteBounds() Returns the geographic bounds of the maps displayed in the graphics area.
BufferedImage	getCompleteImage() Returns a copy of the current image associated with the graphics area.
BufferedImage	getCompleteImage(boolean includeAlpha) Returns a copy of the current image associated with the graphics area.
int	getDisplayType() Reports the currently selected raster display type.
Footprint	getGeoBounds() Reports the georeferenced boundaries of the current viewing area.
AffineTransform	getGeoToPixel() Reports the affine transformation required to convert georeferenced to pixel coordinates.
Point2D	getGeoToPixel(Point2D geo) Transforms the given point from georeferenced to pixel coordinates.
int	getImageHeight() Returns the current image height in pixels.
int	getImageWidth() Returns the current image width in pixels.
AffineTransform	getPixelToGeo() Reports the affine transformation required to convert pixel to georeferenced coordinates.
Point2D	getPixelToGeo(Point2D pxl) Transforms the given point from pixel to georeferenced coordinates.
Image	getRasterImage() Returns the current image associated with the display of any rasters graphics area.
Image	getScaledImage() Returns the scaled image associated with the graphics area.
VectorStyles	getVectorStyles() Reports the currently used vector rendering styles.
void	keepOverlay(boolean isKept) Determines if any overlay vectors remain on screen with successive repaints.
void	paintComponent(Graphics g) Updates the graphics area with a representation of the currently selected spatial objects.
void	removeRubberbandListener(RubberbandListener rbListener) Removes a given listener from the list of objects to be informed when a new rubber band is created.
void	removeScaleQuery(ScaleGraphBox scaleGraph) Removes a given scale graph for reporting multi-scale variation.
void	setBoundaryColour(Color colour) Sets the colour to use for polygon boundaries.
void	setBusy(boolean isBusy) Indicates that some process has started or stopped.
void	setCursor(Cursor newCursor) Changes the cursor associated with this graphics area.
void	setDisplayMode(int mode) Sets the display mode (NORMAL, ZOOM, PAN, QUERY, BROADCAST_QUERY or MULTISCALE_QUERY).
void	setDisplayType(int displayType) Sets the raster display type.
void	setDisplayVect(boolean display) Determines whether the currently selected vectors are displayed or not.
void	setFixedLineWidth(boolean isFixedLineWidth) Sets whether line width should be fixed as user zooms in/out.
void	setFixedPointSize(boolean isFixedPointSize) Sets whether or not point rendering style uses fixed size independently of zooming scale.
void	setLabelBackground(Color colour) Sets the colour to use for label backgrounds.
void	setLabelForeground(Color colour) Sets the colour to use for label foregrounds.
void	setLabelPosition(int position) Sets the label position relative to its location.
void	setLabelSize(float size) Sets the font size at which to display labels.
void	setLineWidth(float width) Sets the rendering line width (in pixels).
void	setOverlayStyles(VectorStyles overlayStyles) Sets the styles used for displaying a vector overlay.
void	setPointSize(float pointSize) Sets the point symbol size (in pixels).
void	setPolygonOpacity(float opacity) Sets the rendering opacity of polygon interiors.
void	setRaster1(RasterMap raster) Makes the given raster surface the primary one to display.
void	setRaster2(RasterMap raster) Makes the given raster surface the secondary one to display.
void	setRasterValueOverlay(boolean isDisplayed) Determines whether raster values are displayed numerically over the raster grid.
void	setRenderingStyle(int style) Sets the rendering style for vectors.
void	setRubberbandType(int bandType) Sets the type of rubber band feature to be displayed.
void	setShowLabels(boolean showLabels) Determines whether point labels are to be shown or not.
void	setSurroundLine(boolean isSurroundLine) Determines whether line symbolisation should be hollow (true) or solid (false).
void	setSurroundPoint(boolean surroundPoint) Determines whether point symbols should be hollow (true) or solid (false).
void	setVectorMap1(VectorMap vectorMap) Makes the given vector map the primary one to display.
void	setVectorMap2(VectorMap vectorMap) Makes the given vector map the secondary one to display.
void	setVectorOverlay(VectorMap overlay) Displays the given vector map as an overlay.
void	setVectorStyles(VectorStyles styles) Sets the styles for vector rendering.
void	setViewListener(FootprintListener viewListener) Sets the view listener that is informed when the main view changes (e.g through zooming or panning, or the display of a new spatial object).
void	showFullImage() Resets the zoom/panning display to show full image.
void	startProfileQuery(JWDialogueListener listener) Creates a profile query box to display surface or vector profiles.
void	stopProfileQuery() Stops querying surface profiles.
boolean	usesRaster1() Reports whether primary raster is being used in the current display.
boolean	usesRaster2() Reports whether secondary raster is being used in the current display.
boolean	usesVector() Reports whether vector is being used in the current display.

Methods inherited from class javax.swing.JPanel

getAccessibleContext, getUI, getUIClassID, paramString, setUI, updateUI

Methods inherited from class javax.swing.JComponent

addAncestorListener, addNotify, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBorder, getBounds, getClientProperty, getComponentGraphics, getComponentPopupMenu, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getFontMetrics, getGraphics, getHeight, getInheritsPopupMenu, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPopupLocation, getPreferredSize, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paint, paintBorder, paintChildren, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setComponentPopupMenu, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setEnabled, setFocusTraversalKeys, setFont, setForeground, setInheritsPopupMenu, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update

Methods inherited from class java.awt.Container

add, add, add, add, add, addContainerListener, addImpl, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, getMousePosition, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setLayout, transferFocusBackward, transferFocusDownCycle, validate, validateTree

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, resize, resize, setBounds, setBounds, setComponentOrientation, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusUpCycle

Methods inherited from class java.lang.Object

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

Field Detail

CLEAR

public static final int CLEAR

No raster display.

See Also:

Constant Field Values

RASTER

public static final int RASTER

Interpolated k-colour raster.

See Also:

Constant Field Values

SHADED

public static final int SHADED

Shaded relief blended with k-colour raster

See Also:

Constant Field Values

BLEND

public static final int BLEND

Blend surface and drape.

See Also:

Constant Field Values

HUESAT

public static final int HUESAT

Hue-Saturation map.

See Also:

Constant Field Values

HUEINT

public static final int HUEINT

Hue-Intensity map.

See Also:

Constant Field Values

ADD

public static final int ADD

RGB addition.

See Also:

Constant Field Values

NORMAL

public static final int NORMAL

Indicates normal display mode.

See Also:

Constant Field Values

ZOOM

public static final int ZOOM

Indicates zooming display mode.

See Also:

Constant Field Values

PAN

public static final int PAN

Indicates panning display mode.

See Also:

Constant Field Values

QUERY

public static final int QUERY

Indicates query mode.

See Also:

Constant Field Values

MULTISCALE_QUERY

public static final int MULTISCALE_QUERY

Indicates multiscale query mode.

See Also:

Constant Field Values

PROFILE

public static final int PROFILE

Indicates cross-sectional profile mode.

See Also:

Constant Field Values

BROADCAST_QUERY

public static final int BROADCAST_QUERY

Indicates broadcast query mode (listeners informed).

See Also:

Constant Field Values

DIGITIZE

public static final int DIGITIZE

Indicates digitizing mode.

See Also:

Constant Field Values

DIGIT_PAN

public static final int DIGIT_PAN

Indicates panning while in digitizing mode.

See Also:

Constant Field Values

Constructor Detail

GraphicsArea

public GraphicsArea()

Creates a stand-alone panel for displaying spatial models. Defaults to allowing display of single raster and vector map.

GraphicsArea

public GraphicsArea(GISFrame parent)

Creates a panel for displaying spatial models.

Parameters:

parent - Containing window with status and progress output.

Method Detail

displayRast

public boolean displayRast()

Displays the currently selected raster(s) according to the currently selected display type.

Returns:

True if no problems with display.

setVectorOverlay

public void setVectorOverlay(VectorMap overlay)

Displays the given vector map as an overlay. This can be used for showing temporary vector maps such as those created interactively via on-screen digitizing.

Parameters:

overlay - Vector map to overlay on display.

setOverlayStyles

public void setOverlayStyles(VectorStyles overlayStyles)

Sets the styles used for displaying a vector overlay. If not specified or null provided, the existing vector style will be used for overlays.

Parameters:

overlayStyles - Drawing style for vector overlay.

setViewListener

public void setViewListener(FootprintListener viewListener)

Sets the view listener that is informed when the main view changes (e.g through zooming or panning, or the display of a new spatial object).

Parameters:

viewListener - Class listening for a change in view.

setRasterValueOverlay

public void setRasterValueOverlay(boolean isDisplayed)

Determines whether raster values are displayed numerically over the raster grid. Numeric values are scaled approximately to fit inside raster cell, so overlay should only be set to true if rasters are relatively small.

Parameters:

isDisplayed - Numeric overlay is displayed if set to true.

keepOverlay

public void keepOverlay(boolean isKept)

Determines if any overlay vectors remain on screen with successive repaints. If this is set to false, overlay disappears as soon as mouse is released. To remove overlay vector from display, set value to false.

Parameters:

isKept - Vector overlay will remain on screen if true.

setRaster1

public void setRaster1(RasterMap raster)

Makes the given raster surface the primary one to display.

Parameters:

raster - New primary raster to be displayed.

setRaster2

public void setRaster2(RasterMap raster)

Makes the given raster surface the secondary one to display.

Parameters:

raster - New secondary raster to be displayed.

setVectorMap1

public void setVectorMap1(VectorMap vectorMap)

Makes the given vector map the primary one to display.

Parameters:

vectorMap - New vector map to be displayed.

setVectorMap2

public void setVectorMap2(VectorMap vectorMap)

Makes the given vector map the secondary one to display.

Parameters:

vectorMap - New vector map to be displayed.

setDisplayVect

public void setDisplayVect(boolean display)

Determines whether the currently selected vectors are displayed or not.

Parameters:

display - True if vector is to be displayed.

showFullImage

public void showFullImage()

Resets the zoom/panning display to show full image.

paintComponent

public void paintComponent(Graphics g)

Updates the graphics area with a representation of the currently selected spatial objects.

Overrides:

paintComponent in class JComponent

Parameters:

g - Graphics context in which to draw.

getGeoBounds

public Footprint getGeoBounds()

Reports the georeferenced boundaries of the current viewing area. This is calculated in real-time, so should be consistent with current zooming/panning position.

Returns:

Georeferenced boundaries of viewing area.

addRubberbandListener

public void addRubberbandListener(RubberbandListener rbListener)

Adds a rubber band listener to the list of objects to be informed when a new rubber band is created.

Parameters:

rbListener - Object listening out for a rubber band event.

removeRubberbandListener

public void removeRubberbandListener(RubberbandListener rbListener)

Removes a given listener from the list of objects to be informed when a new rubber band is created.

Parameters:

rbListener - Object to be removed from listeners.

setRubberbandType

public void setRubberbandType(int bandType)

Sets the type of rubber band feature to be displayed. Can be either a box or line.

Parameters:

bandType - Type of rubber band to display. Can be JWRubberband.BOX or JWRubberband.LINE.

See Also:

JWRubberband

addScaleQuery

public void addScaleQuery(JWDialogueListener listener,
                          int paramType)

Adds a link between graphics area and mouse for multi-scale raster query. Initially asks for maximum scale and parameter to calculate.

Parameters:

listener - Listens for a close in the scale query box and informs the GUI.

paramType - Parameter type to calculate on query.

removeScaleQuery

public void removeScaleQuery(ScaleGraphBox scaleGraph)

Removes a given scale graph for reporting multi-scale variation.

Parameters:

scaleGraph - Scale graph to remove.

startProfileQuery

public void startProfileQuery(JWDialogueListener listener)

Creates a profile query box to display surface or vector profiles.

Parameters:

listener - Listens for a close in the profile query box and informs the GUI.

stopProfileQuery

public void stopProfileQuery()

Stops querying surface profiles.

getGeoToPixel

public AffineTransform getGeoToPixel()

Reports the affine transformation required to convert georeferenced to pixel coordinates.

Returns:

Affine transformation to convert georeferenced into pixel coordinates.

getDisplayType

public int getDisplayType()

Reports the currently selected raster display type. Currently supports

• CLEAR - No raster.
• RASTER - Interpolated k-colour raster.
• SHADED - Shaded relief with k-colour blending.
• BLEND - RGB blend of primary and secondary rasters.
• ADD - RGB addition of primary and secondary surfaces.
• HUEINT - Hue given by primary surface, intensity given by secondary surface.
• HUESAT - Saturation given by primary surface, hue given by secondary surface.

Returns:

Raster display type.

usesRaster1

public boolean usesRaster1()

Reports whether primary raster is being used in the current display.

Returns:

True if primary raster is being used in display.

usesRaster2

public boolean usesRaster2()

Reports whether secondary raster is being used in the current display.

Returns:

True if secondary raster is being used in display.

usesVector

public boolean usesVector()

Reports whether vector is being used in the current display.

Returns:

True if vector is being used in display.

getGeoToPixel

public Point2D getGeoToPixel(Point2D geo)

Transforms the given point from georeferenced to pixel coordinates.

Parameters:

geo - Georeferenced coordinate pair to transform.

Returns:

Pixel coordinate pair representing the given georeferenced point.

getPixelToGeo

public AffineTransform getPixelToGeo()

Reports the affine transformation required to convert pixel to georeferenced coordinates.

Returns:

Affine transformation to convert pixel into georeferenced coordinates.

getPixelToGeo

public Point2D getPixelToGeo(Point2D pxl)

Transforms the given point from pixel to georeferenced coordinates.

Parameters:

pxl - Pixel coordinate pair to transform.

Returns:

Georeferenced coordinate pair representing the given pixel coordinates.

getRasterImage

public Image getRasterImage()

Returns the current image associated with the display of any rasters graphics area. This image is a direct representation of the raster and is not dependent on window size. Note that if any vectors are currently displayed, they will not be represented in the image. To display vectors as well call getCompleteImage(). The size of the image is dependent on the dimensions of the raster. If there is no image displayed, this method will return a 1x1 pixel blank image.

Returns:

Current image or small blank image if nothing currently displayed.

getCompleteImage

public BufferedImage getCompleteImage()

Returns a copy of the current image associated with the graphics area. This version will not include any transparent areas. The image is a direct representation of any rasters or vectors and is not dependent on window size. This method will create a new buffered image every time it is called, so should be used sparingly to preserve memory resources. The size of the image is dependent on the dimensions of the raster if it exists. If there is no image or vector displayed, this method will return a 1x1 pixel blank image.

Returns:

Current image or small blank image if nothing currently displayed.

getCompleteImage

public BufferedImage getCompleteImage(boolean includeAlpha)

Returns a copy of the current image associated with the graphics area. This image is a direct representation of any rasters or vectors and is not dependent on window size. This method will create a new buffered image every time it is called, so should be used sparingly to preserve memory resources. The size of the image is dependent on the dimensions of the raster if it exists. If there is no image or vector displayed, this method will return a 1x1 pixel blank image.

Parameters:

includeAlpha - Null values will be represented as transparent areas if true.

Returns:

Current image or small blank image if nothing currently displayed.

getCompleteBounds

public Footprint getCompleteBounds()

Returns the geographic bounds of the maps displayed in the graphics area. This is independent of any zoom or pan settings and therefore includes entire spatial objects. This will be the union of the displayed raster and vector if they exist, otherwise the the bounds of the raster or vector map.If neither exist, null is returned.

Returns:

Geographic bounds of full display, or null if nothing displayed.

getScaledImage

public Image getScaledImage()

Returns the scaled image associated with the graphics area. The image is scaled according to the current window dimensions. The size of the image is dependent on the current window size.

Returns:

Current image.

getImageWidth

public int getImageWidth()

Returns the current image width in pixels. This depends on the aspect ratio of the image and the current window size.

Returns:

Width of current image.

getImageHeight

public int getImageHeight()

Returns the current image height in pixels. This depends on the aspect ratio of the image and the current window size.

Returns:

Height of current image.

setDisplayType

public void setDisplayType(int displayType)

Sets the raster display type. Currently supports

• CLEAR - No raster.
• RASTER - Interpolated k-colour raster.
• SHADED - Shaded relief with k-colour blending.
• BLEND - RGB blend of primary and secondary surfaces.
• ADD - RGB addition of primary and secondary surfaces.
• HUEINT - Hue given by primary surface, intensity given by secondary surface.
• HUESAT - Saturation given by primary surface, hue given by secondary surface.

Parameters:

displayType - Raster display type.

setDisplayMode

public void setDisplayMode(int mode)

Sets the display mode (NORMAL, ZOOM, PAN, QUERY, BROADCAST_QUERY or MULTISCALE_QUERY).

Parameters:

mode - Display mode to use.

setBusy

public void setBusy(boolean isBusy)

Indicates that some process has started or stopped. When busy, a 'busy' cursor is shown.

Parameters:

isBusy - Busy if true.

setCursor

public void setCursor(Cursor newCursor)

Changes the cursor associated with this graphics area.

Overrides:

setCursor in class Component

Parameters:

newCursor - New cursor to use.

setVectorStyles

public void setVectorStyles(VectorStyles styles)

Sets the styles for vector rendering.

Parameters:

styles - Rendering styles to use.

getVectorStyles

public VectorStyles getVectorStyles()

Reports the currently used vector rendering styles.

Returns:

Vector rendering styles used by this graphics area.

setPointSize

public void setPointSize(float pointSize)

Sets the point symbol size (in pixels).

Parameters:

pointSize - Point size in pixels. Need not be a whole number.

setFixedPointSize

public void setFixedPointSize(boolean isFixedPointSize)

Sets whether or not point rendering style uses fixed size independently of zooming scale.

Parameters:

isFixedPointSize - If true, point rendering uses fixed size.

setSurroundPoint

public void setSurroundPoint(boolean surroundPoint)

Determines whether point symbols should be hollow (true) or solid (false).

Parameters:

surroundPoint - True if points are to be drawn as transparent circles with border.

setLineWidth

public void setLineWidth(float width)

Sets the rendering line width (in pixels).

Parameters:

width - Line width in pixels. Need not be a whole number.

setFixedLineWidth

public void setFixedLineWidth(boolean isFixedLineWidth)

Sets whether line width should be fixed as user zooms in/out.

Parameters:

isFixedLineWidth - True if fixed size is to be used.

setSurroundLine

public void setSurroundLine(boolean isSurroundLine)

Determines whether line symbolisation should be hollow (true) or solid (false).

Parameters:

isSurroundLine - True if lines are to be drawn as transparent with borders.

setPolygonOpacity

public void setPolygonOpacity(float opacity)

Sets the rendering opacity of polygon interiors.

Parameters:

opacity - Polygon interior opacity scaled between (0-1) where 0 is transparent and 1 is opaque.

setBoundaryColour

public void setBoundaryColour(Color colour)

Sets the colour to use for polygon boundaries.

Parameters:

colour - Polygon boundary colour, or null if vector attribute used to determine colour.

setRenderingStyle

public void setRenderingStyle(int style)

Sets the rendering style for vectors.

Parameters:

style - Rendering style for vector. Either VectorStyles.SPEED or VectorStyles.QUALITY.

setLabelBackground

public void setLabelBackground(Color colour)

Sets the colour to use for label backgrounds.

Parameters:

colour - Label background colour.

setLabelForeground

public void setLabelForeground(Color colour)

Sets the colour to use for label foregrounds.

Parameters:

colour - Label foreground colour.

setShowLabels

public void setShowLabels(boolean showLabels)

Determines whether point labels are to be shown or not.

Parameters:

showLabels - Point labels are shown if true.

setLabelSize

public void setLabelSize(float size)

Sets the font size at which to display labels.

Parameters:

size - Label font size (in point units).

setLabelPosition

public void setLabelPosition(int position)

Sets the label position relative to its location.

Parameters:

position - Label position. Should be one of VectorStyles.NORTH_WEST, VectorStyles.NORTH, VectorStyles.NORTH_EAST, VectorStyles.EAST, VectorStyles.SOUTH_EAST, VectorStyles.SOUTH, VectorStyles.SOUTH_WEST, VectorStyles.WEST or VectorStyles.CENTRE.

See Also:

VectorStyles