org.apache.batik.bridge

Class CursorManager

public class CursorManager extends Object implements SVGConstants, ErrorConstants

The CursorManager class is a helper class which preloads the cursors corresponding to the SVG built in cursors.

Field Summary
static Cursor	ANCHOR_CURSOR Cursor used over anchors
protected BridgeContext	ctx BridgeContext associated with this CursorManager
protected CursorManager.CursorCache	cursorCache Cache used to hold references to cursors
protected static Map	cursorMap Maps SVG Cursor Values to Java Cursors
static Cursor	DEFAULT_CURSOR Default cursor when value is not found
static int	DEFAULT_PREFERRED_HEIGHT
static int	DEFAULT_PREFERRED_WIDTH Default preferred cursor size, used for SVG images
static Cursor	TEXT_CURSOR Cursor used over text

Constructor Summary
	CursorManager(BridgeContext ctx) Creates a new CursorManager object.

Method Summary
Cursor	convertBuiltInCursor(Element e, String cursorStr)
Cursor	convertCursor(Element e) Returns the Cursor corresponding to the input element's cursor property
Cursor	convertSVGCursor(Element e, Value l) Returns a cursor for the given value list.
Cursor	convertSVGCursorElement(Element cursorElement) Returns a cursor for a given element
protected Filter	cursorHrefToFilter(Element cursorElement, ParsedURL purl, Point2D hotSpot) Converts the input ParsedURL into a Filter and transforms the input hotSpot point (in image space) to cursor space
static Cursor	getPredefinedCursor(String cursorName) Returns a Cursor object for a given cursor value.
protected Image	renderedImageToImage(RenderedImage ri) Implementation helper: converts a RenderedImage to an Image

Field Detail

ANCHOR_CURSOR

public static final Cursor ANCHOR_CURSOR

Cursor used over anchors

ctx

protected BridgeContext ctx

BridgeContext associated with this CursorManager

cursorCache

protected CursorManager.CursorCache cursorCache

Cache used to hold references to cursors

cursorMap

protected static Map cursorMap

Maps SVG Cursor Values to Java Cursors

DEFAULT_CURSOR

public static final Cursor DEFAULT_CURSOR

Default cursor when value is not found

DEFAULT_PREFERRED_HEIGHT

public static final int DEFAULT_PREFERRED_HEIGHT

DEFAULT_PREFERRED_WIDTH

public static final int DEFAULT_PREFERRED_WIDTH

Default preferred cursor size, used for SVG images

TEXT_CURSOR

public static final Cursor TEXT_CURSOR

Cursor used over text

Constructor Detail

CursorManager

public CursorManager(BridgeContext ctx)

Creates a new CursorManager object.

Parameters: ctx the BridgeContext associated to this CursorManager

Method Detail

convertBuiltInCursor

public Cursor convertBuiltInCursor(Element e, String cursorStr)

convertCursor

public Cursor convertCursor(Element e)

Returns the Cursor corresponding to the input element's cursor property

Parameters: e the element on which the cursor property is set

convertSVGCursor

public Cursor convertSVGCursor(Element e, Value l)

Returns a cursor for the given value list. Note that the code assumes that the input value has at least two entries. So the caller should check that before calling the method. For example, CSSUtilities.convertCursor performs that check.

convertSVGCursorElement

public Cursor convertSVGCursorElement(Element cursorElement)

Returns a cursor for a given element

cursorHrefToFilter

protected Filter cursorHrefToFilter(Element cursorElement, ParsedURL purl, Point2D hotSpot)

Converts the input ParsedURL into a Filter and transforms the input hotSpot point (in image space) to cursor space

getPredefinedCursor

public static Cursor getPredefinedCursor(String cursorName)

Returns a Cursor object for a given cursor value. This initial implementation does not handle user-defined cursors, so it always uses the cursor at the end of the list

renderedImageToImage

protected Image renderedImageToImage(RenderedImage ri)

Implementation helper: converts a RenderedImage to an Image