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Posted to batik-dev@xmlgraphics.apache.org by tk...@apache.org on 2001/09/10 16:37:39 UTC
cvs commit: xml-batik/sources/org/apache/batik/swing JSVGCanvas.java
tkormann 01/09/10 07:37:39
Modified: sources/org/apache/batik/swing JSVGCanvas.java
Log:
Start adding some key binding in the Canvas (except Ctrl+I that does not work
yet - as in the svgbrowser), the canvas now provides the zoomIn, zoomOut,
ResetTransform, pan with arrow keys and fast pan with SHIFT+arrow keys.
Revision Changes Path
1.26 +461 -177 xml-batik/sources/org/apache/batik/swing/JSVGCanvas.java
Index: JSVGCanvas.java
===================================================================
RCS file: /home/cvs/xml-batik/sources/org/apache/batik/swing/JSVGCanvas.java,v
retrieving revision 1.25
retrieving revision 1.26
diff -u -r1.25 -r1.26
--- JSVGCanvas.java 2001/08/07 17:28:22 1.25
+++ JSVGCanvas.java 2001/09/10 14:37:39 1.26
@@ -9,17 +9,28 @@
package org.apache.batik.swing;
import java.awt.Dimension;
+
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
import java.awt.event.InputEvent;
import java.awt.event.KeyEvent;
+import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionAdapter;
+import java.awt.geom.AffineTransform;
+
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import java.util.List;
+import javax.swing.AbstractAction;
+import javax.swing.ActionMap;
+import javax.swing.InputMap;
+import javax.swing.JComponent;
+import javax.swing.KeyStroke;
import javax.swing.ToolTipManager;
import org.apache.batik.bridge.UserAgent;
@@ -43,6 +54,7 @@
import org.w3c.dom.events.EventListener;
import org.w3c.dom.events.EventTarget;
+
/**
* This class represents a general-purpose swing SVG component. The
* <tt>JSVGCanvas</tt> does not provided additional functionalities compared to
@@ -53,84 +65,11 @@
*
* @author <a href="mailto:tkormann@apache.org">Thierry Kormann</a>
* @author <a href="mailto:stephane@hillion.org">Stephane Hillion</a>
- * @version $Id: JSVGCanvas.java,v 1.25 2001/08/07 17:28:22 deweese Exp $
+ * @version $Id: JSVGCanvas.java,v 1.26 2001/09/10 14:37:39 tkormann Exp $
*/
public class JSVGCanvas extends JSVGComponent {
/**
- * An interactor to perform a zoom.
- * <p>Binding: BUTTON1 + CTRL Key</p>
- */
- protected Interactor zoomInteractor = new AbstractZoomInteractor() {
- public boolean startInteraction(InputEvent ie) {
- int mods = ie.getModifiers();
- return
- ie.getID() == MouseEvent.MOUSE_PRESSED &&
- (mods & ie.BUTTON1_MASK) != 0 &&
- (mods & ie.CTRL_MASK) != 0;
- }
- };
-
- /**
- * An interactor to perform a realtime zoom.
- * <p>Binding: BUTTON3 + SHIFT Key</p>
- */
- protected Interactor imageZoomInteractor
- = new AbstractImageZoomInteractor() {
- public boolean startInteraction(InputEvent ie) {
- int mods = ie.getModifiers();
- return
- ie.getID() == MouseEvent.MOUSE_PRESSED &&
- (mods & ie.BUTTON3_MASK) != 0 &&
- (mods & ie.SHIFT_MASK) != 0;
- }
- };
-
- /**
- * An interactor to perform a translation.
- * <p>Binding: BUTTON1 + SHIFT Key</p>
- */
- protected Interactor panInteractor = new AbstractPanInteractor() {
- public boolean startInteraction(InputEvent ie) {
- int mods = ie.getModifiers();
- return
- ie.getID() == MouseEvent.MOUSE_PRESSED &&
- (mods & ie.BUTTON1_MASK) != 0 &&
- (mods & ie.SHIFT_MASK) != 0;
- }
- };
-
- /**
- * An interactor to perform a rotation.
- * <p>Binding: BUTTON3 + CTRL Key</p>
- */
- protected Interactor rotateInteractor = new AbstractRotateInteractor() {
- public boolean startInteraction(InputEvent ie) {
- int mods = ie.getModifiers();
- return
- ie.getID() == MouseEvent.MOUSE_PRESSED &&
- (mods & ie.BUTTON3_MASK) != 0 &&
- (mods & ie.CTRL_MASK) != 0;
- }
- };
-
- /**
- * An interactor to reset the rendering transform.
- * <p>Binding: CTRL+SHIFT+BUTTON3</p>
- */
- protected Interactor resetTransformInteractor =
- new AbstractResetTransformInteractor() {
- public boolean startInteraction(InputEvent ie) {
- int mods = ie.getModifiers();
- return
- ie.getID() == MouseEvent.MOUSE_CLICKED &&
- (mods & ie.BUTTON3_MASK) != 0 &&
- (mods & ie.SHIFT_MASK) != 0 &&
- (mods & ie.CTRL_MASK) != 0;
- }
- };
-
- /**
* This flag bit indicates whether or not the zoom interactor is
* enabled. True means the zoom interactor is functional.
*/
@@ -172,6 +111,12 @@
protected String uri;
/**
+ * Keeps track of the last known mouse position over the canvas.
+ * This is used for displaying tooltips at the right location.
+ */
+ protected LocationListener locationListener = null;
+
+ /**
* Creates a new JSVGCanvas.
*/
public JSVGCanvas() {
@@ -180,26 +125,107 @@
/**
* Creates a new JSVGCanvas.
+ *
* @param ua a SVGUserAgent instance or null.
- * @param eventEnabled Whether the GVT tree should be reactive
- * to mouse and key events.
- * @param selectableText Whether the text should be selectable.
+ * @param eventEnabled Whether the GVT tree should be reactive to mouse and
+ * key events.
+ * @param selectableText Whether the text should be selectable.
*/
- public JSVGCanvas(SVGUserAgent ua, boolean eventsEnabled,
+ public JSVGCanvas(SVGUserAgent ua,
+ boolean eventsEnabled,
boolean selectableText) {
+
super(ua, eventsEnabled, selectableText);
+
setPreferredSize(new Dimension(200, 200));
setMinimumSize(new Dimension(100, 100));
-
+
List intl = getInteractors();
intl.add(zoomInteractor);
intl.add(imageZoomInteractor);
intl.add(panInteractor);
intl.add(rotateInteractor);
intl.add(resetTransformInteractor);
+
+ if (eventsEnabled) {
+ addMouseListener(new MouseAdapter() {
+ public void mousePressed(MouseEvent evt) {
+ requestFocus();
+ }
+ });
+
+ installActions();
+ installKeyboardActions();
+ }
+ }
+
+ /**
+ * Builds the ActionMap of this canvas with a set of predefined
+ * <tt>Action</tt>s.
+ */
+ protected void installActions() {
+ ActionMap actionMap = getActionMap();
+
+ actionMap.put(ScrollRightAction.NAME, new ScrollRightAction());
+ actionMap.put(ScrollLeftAction.NAME, new ScrollLeftAction());
+ actionMap.put(ScrollUpAction.NAME, new ScrollUpAction());
+ actionMap.put(ScrollDownAction.NAME, new ScrollDownAction());
+
+ actionMap.put(FastScrollRightAction.NAME, new FastScrollRightAction());
+ actionMap.put(FastScrollLeftAction.NAME, new FastScrollLeftAction());
+ actionMap.put(FastScrollUpAction.NAME, new FastScrollUpAction());
+ actionMap.put(FastScrollDownAction.NAME, new FastScrollDownAction());
+
+ actionMap.put(ZoomInAction.NAME, new ZoomInAction());
+ actionMap.put(ZoomOutAction.NAME, new ZoomOutAction());
+
+ actionMap.put(ResetTransformAction.NAME, new ResetTransformAction());
}
/**
+ * Builds the InputMap of this canvas with a set of predefined
+ * <tt>Action</tt>s.
+ */
+ protected void installKeyboardActions() {
+
+ InputMap inputMap = getInputMap(JComponent.WHEN_FOCUSED);
+ KeyStroke key;
+
+ key = KeyStroke.getKeyStroke(KeyEvent.VK_RIGHT, 0);
+ inputMap.put(key, ScrollRightAction.NAME);
+
+ key = KeyStroke.getKeyStroke(KeyEvent.VK_LEFT, 0);
+ inputMap.put(key, ScrollLeftAction.NAME);
+
+ key = KeyStroke.getKeyStroke(KeyEvent.VK_UP, 0);
+ inputMap.put(key, ScrollUpAction.NAME);
+
+ key = KeyStroke.getKeyStroke(KeyEvent.VK_DOWN, 0);
+ inputMap.put(key, ScrollDownAction.NAME);
+
+ key = KeyStroke.getKeyStroke(KeyEvent.VK_RIGHT, KeyEvent.SHIFT_MASK);
+ inputMap.put(key, FastScrollRightAction.NAME);
+
+ key = KeyStroke.getKeyStroke(KeyEvent.VK_LEFT, KeyEvent.SHIFT_MASK);
+ inputMap.put(key, FastScrollLeftAction.NAME);
+
+ key = KeyStroke.getKeyStroke(KeyEvent.VK_UP, KeyEvent.SHIFT_MASK);
+ inputMap.put(key, FastScrollUpAction.NAME);
+
+ key = KeyStroke.getKeyStroke(KeyEvent.VK_DOWN, KeyEvent.SHIFT_MASK);
+ inputMap.put(key, FastScrollDownAction.NAME);
+
+ key = KeyStroke.getKeyStroke(KeyEvent.VK_I, KeyEvent.CTRL_MASK);
+ inputMap.put(key, ZoomInAction.NAME);
+
+ key = KeyStroke.getKeyStroke(KeyEvent.VK_O, KeyEvent.CTRL_MASK);
+ inputMap.put(key, ZoomOutAction.NAME);
+
+ key = KeyStroke.getKeyStroke(KeyEvent.VK_T, KeyEvent.CTRL_MASK);
+ inputMap.put(key, ResetTransformAction.NAME);
+ }
+
+ /**
* Adds the specified <tt>PropertyChangeListener</tt>.
*
* @param pcl the property change listener to add
@@ -218,11 +244,11 @@
}
/**
- * Adds the specified <tt>PropertyChangeListener</tt> for the
- * specified property.
+ * Adds the specified <tt>PropertyChangeListener</tt> for the specified
+ * property.
*
* @param propertyName the name of the property to listen on
- * @param pcl the property change listener to add
+ * @param pcl the property change listener to add
*/
public void addPropertyChangeListener(String propertyName,
PropertyChangeListener pcl) {
@@ -230,11 +256,11 @@
}
/**
- * Removes the specified <tt>PropertyChangeListener</tt> for the
- * specified property.
+ * Removes the specified <tt>PropertyChangeListener</tt> for the specified
+ * property.
*
* @param propertyName the name of the property that was listened on
- * @param pcl the property change listener to remove
+ * @param pcl the property change listener to remove
*/
public void removePropertyChangeListener(String propertyName,
PropertyChangeListener pcl) {
@@ -345,12 +371,15 @@
} else {
getInteractors().remove(resetTransformInteractor);
}
- pcs.firePropertyChange("enableResetTransformInteractor", oldValue, b);
+ pcs.firePropertyChange("enableResetTransformInteractor",
+ oldValue,
+ b);
}
}
-
+
/**
- * Returns true if the reset transform interactor is enabled, false otherwise.
+ * Returns true if the reset transform interactor is enabled, false
+ * otherwise.
*/
public boolean getEnableResetTransformInteractor() {
return isResetTransformInteractorEnabled;
@@ -382,36 +411,282 @@
return new CanvasUserAgent();
}
+ // ----------------------------------------------------------------------
+ // Actions
+ // ----------------------------------------------------------------------
+
/**
- * Helper class. Simply keeps track of the last known mouse
- * position over the canvas.
+ * A swing action to reset the rendering transform of the canvas.
*/
- protected class LocationListener extends MouseMotionAdapter {
- protected int lastX, lastY;
- public void mouseMoved(MouseEvent evt){
- lastX = evt.getX();
- lastY = evt.getY();
- }
-
- public int getLastX(){ return lastX; }
- public int getLastY(){ return lastY; }
+ protected class ResetTransformAction extends AbstractAction {
+
+ /** The action name. */
+ public static final String NAME = "resetTransform";
+
+ public void actionPerformed(ActionEvent evt) {
+ resetRenderingTransform();
+ }
}
/**
- * Keeps track of the last known mouse position over the canvas.
- * This is used for displaying tooltips at the right location.
+ * A swing action to zoom in the canvas.
*/
- protected LocationListener locationListener = null;
+ protected class ZoomInAction extends AbstractAction {
+
+ /** The action name. */
+ public static final String NAME = "zoomIn";
+
+ public void actionPerformed(ActionEvent evt) {
+ AffineTransform at = getRenderingTransform();
+ if (at != null) {
+ Dimension dim = getSize();
+ int x = dim.width / 2;
+ int y = dim.height / 2;
+ AffineTransform t = AffineTransform.getTranslateInstance(x, y);
+ t.scale(2, 2);
+ t.translate(-x, -y);
+ t.concatenate(at);
+ setRenderingTransform(t);
+ }
+ }
+ }
/**
- * The <tt>CanvasUserAgent</tt> only adds tooltips to the behavior
- * of the default <tt>BridgeUserAgent</tt>.<br />
- * A tooltip will be displayed wheneven the mouse lingers over
- * an element which has a <title> or a <desc> child
- * element.
+ * A swing action to zoom out the canvas.
*/
- protected class CanvasUserAgent
- extends BridgeUserAgent
+ protected class ZoomOutAction extends AbstractAction {
+
+ /** The action name. */
+ public static final String NAME = "zoomOut";
+
+ public void actionPerformed(ActionEvent evt) {
+ AffineTransform at = getRenderingTransform();
+ if (at != null) {
+ Dimension dim = getSize();
+ int x = dim.width / 2;
+ int y = dim.height / 2;
+ AffineTransform t = AffineTransform.getTranslateInstance(x, y);
+ t.scale(.5, .5);
+ t.translate(-x, -y);
+ t.concatenate(at);
+ setRenderingTransform(t);
+ }
+ }
+ }
+
+ /**
+ * A swing action to scroll the canvas to the right.
+ */
+ protected class ScrollRightAction extends AbstractAction {
+
+ /** The action name. */
+ public static final String NAME = "scrollRight";
+
+ /** The scroll increment. */
+ protected int inc = 10;
+
+ public void actionPerformed(ActionEvent evt) {
+ AffineTransform at = new AffineTransform(getRenderingTransform());
+ at.translate(-inc, 0);
+ setRenderingTransform(at);
+ }
+ }
+
+ /**
+ * A swing action to scroll the canvas to the left.
+ */
+ protected class ScrollLeftAction extends AbstractAction {
+
+ /** The action name. */
+ public static final String NAME = "scrollLeft";
+
+ /** The scroll increment. */
+ protected int inc = 10;
+
+ public void actionPerformed(ActionEvent evt) {
+ AffineTransform at = new AffineTransform(getRenderingTransform());
+ at.translate(inc, 0);
+ setRenderingTransform(at);
+ }
+ }
+
+ /**
+ * A swing action to scroll the canvas up.
+ */
+ protected class ScrollUpAction extends AbstractAction {
+
+ /** The action name. */
+ public static final String NAME = "scrollUp";
+
+ /** The scroll increment. */
+ protected int inc = 10;
+
+ public void actionPerformed(ActionEvent evt) {
+ AffineTransform at = new AffineTransform(getRenderingTransform());
+ at.translate(0, inc);
+ setRenderingTransform(at);
+ }
+ }
+
+ /**
+ * A swing action to scroll the canvas down.
+ */
+ protected class ScrollDownAction extends AbstractAction {
+
+ /** The action name. */
+ public static final String NAME = "scrollDown";
+
+ /** The scroll increment. */
+ protected int inc = 10;
+
+ public void actionPerformed(ActionEvent evt) {
+ AffineTransform at = new AffineTransform(getRenderingTransform());
+ at.translate(0, -inc);
+ setRenderingTransform(at);
+ }
+ }
+
+ /**
+ * A swing action to scroll the canvas to the right fastely.
+ */
+ protected class FastScrollRightAction extends ScrollRightAction {
+
+ /** The action name. */
+ public static final String NAME = "fastScrollRight";
+
+ public FastScrollRightAction() {
+ inc = 30;
+ }
+ }
+
+ /**
+ * A swing action to scroll the canvas to the left.
+ */
+ protected class FastScrollLeftAction extends ScrollLeftAction {
+
+ /** The action name. */
+ public static final String NAME = "fastScrollLeft";
+
+ public FastScrollLeftAction() {
+ inc = 30;
+ }
+ }
+
+ /**
+ * A swing action to scroll the canvas up fastely.
+ */
+ protected class FastScrollUpAction extends ScrollUpAction {
+
+ /** The action name. */
+ public static final String NAME = "fastScrollUp";
+
+ public FastScrollUpAction() {
+ inc = 30;
+ }
+ }
+
+ /**
+ * A swing action to scroll the canvas down fastely.
+ */
+ protected class FastScrollDownAction extends ScrollDownAction {
+
+ /** The action name. */
+ public static final String NAME = "fastScrollDown";
+
+ public FastScrollDownAction() {
+ inc = 30;
+ }
+ }
+
+ // ----------------------------------------------------------------------
+ // Interactors
+ // ----------------------------------------------------------------------
+
+ /**
+ * An interactor to perform a zoom.
+ * <p>Binding: BUTTON1 + CTRL Key</p>
+ */
+ protected Interactor zoomInteractor = new AbstractZoomInteractor() {
+ public boolean startInteraction(InputEvent ie) {
+ int mods = ie.getModifiers();
+ return
+ ie.getID() == MouseEvent.MOUSE_PRESSED &&
+ (mods & ie.BUTTON1_MASK) != 0 &&
+ (mods & ie.CTRL_MASK) != 0;
+ }
+ };
+
+ /**
+ * An interactor to perform a realtime zoom.
+ * <p>Binding: BUTTON3 + SHIFT Key</p>
+ */
+ protected Interactor imageZoomInteractor
+ = new AbstractImageZoomInteractor() {
+ public boolean startInteraction(InputEvent ie) {
+ int mods = ie.getModifiers();
+ return
+ ie.getID() == MouseEvent.MOUSE_PRESSED &&
+ (mods & ie.BUTTON3_MASK) != 0 &&
+ (mods & ie.SHIFT_MASK) != 0;
+ }
+ };
+
+ /**
+ * An interactor to perform a translation.
+ * <p>Binding: BUTTON1 + SHIFT Key</p>
+ */
+ protected Interactor panInteractor = new AbstractPanInteractor() {
+ public boolean startInteraction(InputEvent ie) {
+ int mods = ie.getModifiers();
+ return
+ ie.getID() == MouseEvent.MOUSE_PRESSED &&
+ (mods & ie.BUTTON1_MASK) != 0 &&
+ (mods & ie.SHIFT_MASK) != 0;
+ }
+ };
+
+ /**
+ * An interactor to perform a rotation.
+ * <p>Binding: BUTTON3 + CTRL Key</p>
+ */
+ protected Interactor rotateInteractor = new AbstractRotateInteractor() {
+ public boolean startInteraction(InputEvent ie) {
+ int mods = ie.getModifiers();
+ return
+ ie.getID() == MouseEvent.MOUSE_PRESSED &&
+ (mods & ie.BUTTON3_MASK) != 0 &&
+ (mods & ie.CTRL_MASK) != 0;
+ }
+ };
+
+ /**
+ * An interactor to reset the rendering transform.
+ * <p>Binding: CTRL+SHIFT+BUTTON3</p>
+ */
+ protected Interactor resetTransformInteractor =
+ new AbstractResetTransformInteractor() {
+ public boolean startInteraction(InputEvent ie) {
+ int mods = ie.getModifiers();
+ return
+ ie.getID() == MouseEvent.MOUSE_CLICKED &&
+ (mods & ie.BUTTON3_MASK) != 0 &&
+ (mods & ie.SHIFT_MASK) != 0 &&
+ (mods & ie.CTRL_MASK) != 0;
+ }
+ };
+
+ // ----------------------------------------------------------------------
+ // User agent implementation
+ // ----------------------------------------------------------------------
+
+ /**
+ * The <tt>CanvasUserAgent</tt> only adds tooltips to the behavior of the
+ * default <tt>BridgeUserAgent</tt>.<br /> A tooltip will be displayed
+ * wheneven the mouse lingers over an element which has a <title> or a
+ * <desc> child element.
+ */
+ protected class CanvasUserAgent extends BridgeUserAgent
+
implements XMLConstants {
final String TOOLTIP_TITLE_ONLY
@@ -444,60 +719,56 @@
if (elt.getNamespaceURI().equals(SVGConstants.SVG_NAMESPACE_URI)) {
if (elt.getLocalName().equals(SVGConstants.SVG_TITLE_TAG)) {
- //
- // If there is a <desc> peer, do nothing as the tooltip
- // will be handled when handleElement is invoked for
- // the <desc> peer.
- //
+ // If there is a <desc> peer, do nothing as the tooltip will
+ // be handled when handleElement is invoked for the <desc>
+ // peer.
if (hasPeerWithTag(elt,
SVGConstants.SVG_NAMESPACE_URI,
SVGConstants.SVG_DESC_TAG)){
return;
}
-
+
elt.normalize();
String toolTip = elt.getFirstChild().getNodeValue();
- toolTip = Messages.formatMessage(TOOLTIP_TITLE_ONLY,
- new Object[]{toFormattedHTML(toolTip)});
+ toolTip = Messages.formatMessage
+ (TOOLTIP_TITLE_ONLY,
+ new Object[]{toFormattedHTML(toolTip)});
setToolTip((Element)(elt.getParentNode()), toolTip);
}
else if (elt.getLocalName().equals(SVGConstants.SVG_DESC_TAG)) {
- //
- // If there is a <title> peer, prepend its content to
- // the content of the <desc> element.
- //
+ // If there is a <title> peer, prepend its content to the
+ // content of the <desc> element.
elt.normalize();
String toolTip = elt.getFirstChild().getNodeValue();
-
- Element titlePeer = getPeerWithTag(elt,
- SVGConstants.SVG_NAMESPACE_URI,
- SVGConstants.SVG_TITLE_TAG);
+ Element titlePeer =
+ getPeerWithTag(elt,
+ SVGConstants.SVG_NAMESPACE_URI,
+ SVGConstants.SVG_TITLE_TAG);
if (titlePeer != null) {
titlePeer.normalize();
- toolTip = Messages.formatMessage
- (TOOLTIP_TITLE_AND_TEXT,
- new Object[]{toFormattedHTML(titlePeer.getFirstChild().getNodeValue()),
- toFormattedHTML(toolTip)});
- }
- else{
- toolTip = Messages.formatMessage(TOOLTIP_DESC_ONLY,
- new Object[]{toFormattedHTML(toolTip)});
+ toolTip = Messages.formatMessage(TOOLTIP_TITLE_AND_TEXT,
+ new Object[] {
+ toFormattedHTML(titlePeer.getFirstChild().getNodeValue()),
+ toFormattedHTML(toolTip)});
+ } else {
+ toolTip =
+ Messages.formatMessage
+ (TOOLTIP_DESC_ONLY,
+ new Object[]{toFormattedHTML(toolTip)});
}
-
+
setToolTip((Element)(elt.getParentNode()), toolTip);
}
}
}
/**
- * Converts line breaks to HTML breaks and encodes
- * special entities.
- * Poor way of replacing '<', '>', '"', '&' and '''
- * in attribute values.
- */
- public String toFormattedHTML(String str){
+ * Converts line breaks to HTML breaks and encodes special entities.
+ * Poor way of replacing '<', '>', '"', '&' and ''' in attribute values.
+ */
+ public String toFormattedHTML(String str) {
StringBuffer sb = new StringBuffer(str);
replace(sb, XML_CHAR_AMP, XML_ENTITY_AMP);
replace(sb, XML_CHAR_LT, XML_ENTITY_LT);
@@ -508,61 +779,52 @@
return sb.toString();
}
- protected void replace(StringBuffer s,
- char c,
- String r){
+ protected void replace(StringBuffer s, char c, String r) {
String v = s.toString() + 1;
int i = v.length();
- while( (i=v.lastIndexOf(c, --i)) != -1 ){
+ while( (i=v.lastIndexOf(c, --i)) != -1 ) {
s.deleteCharAt(i);
s.insert(i, r);
}
}
/**
- * Checks if there is a peer element of a given type.
- * This returns the first occurence of the given type
- * or null if none is found.
- */
- public Element getPeerWithTag(Element elt,
- String nameSpaceURI,
- String localName){
+ * Checks if there is a peer element of a given type. This returns the
+ * first occurence of the given type or null if none is found.
+ */
+ public Element getPeerWithTag(Element elt,
+ String nameSpaceURI,
+ String localName) {
+
Element p = (Element)elt.getParentNode();
if (p == null) {
return null;
}
- for (Node n=p.getFirstChild(); n!=null; n=n.getNextSibling()){
+ for (Node n=p.getFirstChild(); n!=null; n = n.getNextSibling()) {
if (!nameSpaceURI.equals(n.getNamespaceURI())){
continue;
}
-
if (!localName.equals(n.getLocalName())){
continue;
}
-
if (n.getNodeType() == n.ELEMENT_NODE) {
return (Element)n;
}
}
-
return null;
}
/**
- * Returns a boolean defining whether or not there is a
- * peer of <tt>elt</tt> with the given qualified tag.
- */
+ * Returns a boolean defining whether or not there is a peer of
+ * <tt>elt</tt> with the given qualified tag.
+ */
public boolean hasPeerWithTag(Element elt,
String nameSpaceURI,
String localName){
- if (getPeerWithTag(elt, nameSpaceURI, localName) == null){
- return false;
- }
- else{
- return true;
- }
+
+ return !(getPeerWithTag(elt, nameSpaceURI, localName) == null);
}
/**
@@ -570,9 +832,8 @@
*/
public void setToolTip(Element elt, String toolTip){
EventTarget target = (EventTarget)elt;
+ elt.normalize();
- elt.normalize();
-
// On mouseover, set the tooltip to the title value
target.addEventListener(SVGConstants.SVG_EVENT_MOUSEOVER,
new ToolTipModifier(toolTip),
@@ -583,23 +844,47 @@
new ToolTipModifier(null),
false);
- if (locationListener == null){
+ if (locationListener == null) {
locationListener = new LocationListener();
addMouseMotionListener(locationListener);
}
}
}
+ // ----------------------------------------------------------------------
+ // Tooltip
+ // ----------------------------------------------------------------------
+
+ /**
+ * Helper class. Simply keeps track of the last known mouse
+ * position over the canvas.
+ */
+ protected class LocationListener extends MouseMotionAdapter {
+
+ protected int lastX, lastY;
+
+ public void mouseMoved(MouseEvent evt) {
+ lastX = evt.getX();
+ lastY = evt.getY();
+ }
+
+ public int getLastX() {
+ return lastX;
+ }
+
+ public int getLastY() {
+ return lastY;
+ }
+ }
+
/**
- * Sets a specific tooltip on the JSVGCanvas when a given event
- * occurs. This listener is used in the handleElement method
- * to set, remove or modify the JSVGCanvas tooltip on mouseover
- * and on mouseout.<br/>
- * Because we are on a single <tt>JComponent</tt> we trigger an
- * artificial <tt>MouseEvent</tt> when the toolTip is set to
- * a non-null value, so as to make sure it will show after the
- * <tt>ToolTipManager</tt>'s default delay.
+ * Sets a specific tooltip on the JSVGCanvas when a given event occurs. This
+ * listener is used in the handleElement method to set, remove or modify the
+ * JSVGCanvas tooltip on mouseover and on mouseout.<br/>
*
+ * Because we are on a single <tt>JComponent</tt> we trigger an artificial
+ * <tt>MouseEvent</tt> when the toolTip is set to a non-null value, so as to
+ * make sure it will show after the <tt>ToolTipManager</tt>'s default delay.
*/
protected class ToolTipModifier implements EventListener {
/**
@@ -618,7 +903,7 @@
public void handleEvent(Event evt){
setToolTipText(toolTip);
- if(toolTip != null){
+ if (toolTip != null) {
MouseEvent e = new MouseEvent(JSVGCanvas.this,
MouseEvent.MOUSE_ENTERED,
System.currentTimeMillis(),
@@ -631,5 +916,4 @@
}
}
}
-
}
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