/*
*
*
* Copyright 1990-2007 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 only, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License version 2 for more details (a copy is
* included at /legal/license.txt).
*
* You should have received a copy of the GNU General Public License
* version 2 along with this work; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
* Clara, CA 95054 or visit www.sun.com if you need additional
* information or have any questions.
*/
package com.sun.perseus.model;
import com.sun.perseus.platform.MathSupport;
import com.sun.perseus.j2d.Box;
import com.sun.perseus.j2d.PaintServer;
import com.sun.perseus.j2d.PaintTarget;
import com.sun.perseus.j2d.RenderContext;
import com.sun.perseus.j2d.RenderGraphics;
import com.sun.perseus.j2d.TextRenderingProperties;
import com.sun.perseus.j2d.TextProperties;
import com.sun.perseus.j2d.Tile;
import com.sun.perseus.j2d.Transform;
import com.sun.perseus.util.SVGConstants;
import org.w3c.dom.DOMException;
import org.w3c.dom.svg.SVGRect;
/**
* Models text content. In Perseus, text nodes are described by their content
* (a character string), a number of font properties which guide which
* Font is selected to render the text and a text property (text-anchor) which
* defines how the text is positioned about its anchor point.
* <br />
* Text nodes lazily (i.e., on paint request) evaluate which font they use to
* render their content. At that time, the characters in the Text content is
* matched with the glyphs that available Fonts can display. This generates a
* set of children <code>GlyphProxy</code> nodes which are then laid-out
* using the text property and the font metrics.
*
* @version $Id: Text.java,v 1.18 2006/06/29 10:47:35 ln156897 Exp $
*/
public class Text extends Group {
/**
* The text to be displayed
*/
protected String content;
/**
* The origin of the text string on the x axis.
*/
protected float[] x = {0};
/**
* The origin of the text string on the y axis.
*/
protected float[] y = {0};
/**
* Per-glyph rotation
*/
protected float[] rotate;
/**
* Points to the first text chunk.
*/
protected GlyphLayout firstChunk;
/**
* Points to the last text chunk.
*/
protected GlyphLayout lastChunk;
/**
* Used to track the node's rendering area and the rendered areas.
*/
protected RenderingManager renderingManager = null;
/**
* Used to scale dash array values.
*/
protected float[] helperDashArray;
/**
* Constructor.
*
* @param ownerDocument this element's owner <code>DocumentNode</code>
*/
public Text(final DocumentNode ownerDocument) {
super(ownerDocument);
if (DirtyAreaManager.ON) {
renderingManager = new RenderingManager(this);
}
}
/**
* @return the SVGConstants.SVG_TEXT_TAG value
*/
public String getLocalName() {
return SVGConstants.SVG_TEXT_TAG;
}
/**
* Used by <code>DocumentNode</code> to create a new instance from
* a prototype <code>Text</code>.
*
* @param doc the <code>DocumentNode</code> for which a new node is
* should be created.
* @return a new <code>Text</code> for the requested document.
*/
public ElementNode newInstance(final DocumentNode doc) {
return new Text(doc);
}
/**
* @return an adequate <code>ElementNodeProxy</code> for this node.
*/
ElementNodeProxy buildProxy() {
return new TextProxy(this);
}
/**
* @param newX this text's new x-axis position
*/
public void setX(final float[] newX) {
if (equal(newX, x)) {
return;
}
modifyingNode();
if (newX == null || newX.length == 0) {
this.x = new float[1];
this.x[0] = 0;
} else {
this.x = newX;
}
clearLayoutsQuiet();
renderingDirty();
modifiedNode();
}
/**
* @param newY this text's new y-axis position
*/
public void setY(final float[] newY) {
if (equal(newY, y)) {
return;
}
modifyingNode();
if (newY == null || newY.length == 0) {
this.y = new float[1];
this.y[0] = 0;
} else {
this.y = newY;
}
clearLayoutsQuiet();
renderingDirty();
modifiedNode();
}
/**
* @param newRotate this text's new per-glyph rotation
*/
public void setRotate(final float[] newRotate) {
if (equal(newRotate, rotate)) {
return;
}
modifyingNode();
this.rotate = newRotate;
clearLayoutsQuiet();
modifiedNode();
}
/**
* @return this text's x-axis author position
*/
public float[] getX() {
return x;
}
/**
* @return this text's y-axis anchor position
*/
public float[] getY() {
return y;
}
/**
* @return this text's set of rotation values for
* its glyphs.
*/
public float[] getRotate() {
return rotate;
}
/**
* @return true always, as a text node needs its textual content which
* is not fully loaded until the element has been loaded.
*/
public boolean getPaintNeedsLoad() {
return true;
}
/**
* @return the bounding box, in screen coordinate, which encompasses the
* node's rendering.
*/
protected Tile getRenderingTile() {
return renderingManager.getRenderingTile();
}
/**
* @return the tile which encompasses the node's last actual rendering. If
* this node's hasRendering method returns false, then this method should
* return null. By default, this method returns null because
* hasNodeRendering returns false by default.
*/
protected Tile getLastRenderedTile() {
return renderingManager.getLastRenderedTile();
}
/**
* After calling this method, getLastRenderedTile should always return null.
*/
protected void clearLastRenderedTile() {
renderingManager.clearLastRenderedTile();
}
/**
* To be overriddent by derived classes, such as TimedElementNode,
* if they need to perform special operations when hooked into the
* document tree.
*/
void nodeHookedInDocumentTree() {
super.nodeHookedInDocumentTree();
renderingDirty();
}
/**
* To be overriddent by derived classes, such as TimedElementNode,
* if they need to perform special operations when unhooked from the
* document tree.
*/
void nodeUnhookedFromDocumentTree() {
super.nodeUnhookedFromDocumentTree();
renderingDirty();
}
/**
* @return the tight bounding box in current user coordinate
* space.
*/
public SVGRect getBBox() {
return addNodeBBox(null, null);
}
/**
* @return the tight bounding box in screen coordinate space.
*/
public SVGRect getScreenBBox() {
// There is no screen bounding box if the element is not hooked
// into the main tree.
if (!inDocumentTree()) {
return null;
}
return addNodeBBox(null, txf);
}
/**
* @param bbox the bounding box to which this node's bounding box should be
* appended. That bounding box is in the target coordinate space. It
* may be null, in which case this node should create a new one.
* @param t the transform from the node coordinate system to the coordinate
* system into which the bounds should be computed.
* @return the bounding box of this node, in the target coordinate space,
*/
Box addNodeBBox(final Box bbox,
final Transform t) {
checkLayout();
return addNodeBBox(bbox, t, firstChunk);
}
/**
* @param bbox the bounding box to which this node's bounding box should be
* appended. That bounding box is in the target coordinate space. It
* may be null, in which case this node should create a new one.
* @param t the transform from the node coordinate system to the coordinate
* system into which the bounds should be computed.
* @param fc the <code>GlyphLayout</code> first chunk, so that the method
* can be used by <code>TextProxy</code>
* @return the bounding box of this node, in the target coordinate space,
*/
Box addNodeBBox(Box bbox,
final Transform t,
final GlyphLayout fc) {
GlyphLayout c = fc;
while (c != null) {
ownerDocument.bboxChunkTxf.setTransform(t);
c.applyTransform(this, ownerDocument.bboxChunkTxf);
bbox = c.addBBox(bbox, ownerDocument.bboxChunkTxf);
c = c.nextSibling;
}
return bbox;
}
/**
* An <code>Text</code> has something to render
*
* @return true
*/
public boolean hasNodeRendering() {
return true;
}
/**
* This method is overridden for elements which has special renderings,
* such as the ShapeNodes.
*
* @param tile the Tile instance whose bounds should be set.
*/
protected void computeRenderingTile(final Tile tile) {
checkLayout();
computeRenderingTile(tile, txf, this, firstChunk);
}
/**
* The rendering tile of a Text node is the union of the rendering tile of
* its layouts.
*
* @param tile the Tile instance whose bounds should be set.
* @param t the Transform to the requested tile space, from this node's user
* @param trp the TextRenderinProperties describing the nodes rendering
* characteristics. space.
* @param fc the first GlyphLayout chunk.
*/
final protected void computeRenderingTile(final Tile tile,
final Transform t,
final TextRenderingProperties trp,
final GlyphLayout fc) {
GlyphLayout gl = fc;
Tile glt = null;
while (gl != null) {
ownerDocument.bboxChunkTxf.setTransform(t);
gl.applyTransform(trp, ownerDocument.bboxChunkTxf);
glt = gl.addRenderingTile(glt, trp, ownerDocument.bboxChunkTxf);
gl = (GlyphLayout) gl.nextSibling;
}
if (glt != null) {
tile.setTile(glt);
} else {
tile.setEmptyTile();
}
}
/**
* @param text the text to append to this node's content.
* If text is null or empty, this does nothing.
*/
public void appendTextChild(final String text) {
if (text == null || text.length() == 0) {
return;
}
if (content == null) {
setContent(text);
} else {
setContent(content + text);
}
}
/**
* @param newContent this node's new content string
*/
public void setContent(final String newContent) {
if (equal(newContent, content)) {
return;
}
modifyingNode();
this.content = newContent;
clearLayouts(false);
modifiedNode();
}
/**
* @return this node's text content as a string
*/
public String getContent() {
return content;
}
/**
* Returns the <code>ModelNode</code>, if any, hit by the
* point at coordinate x/y.
*
* @param pt the x/y coordinate. Should never be null and be
* of size two. If not, the behavior is unspecified.
* The coordinates are in viewport space.
* @return the <tt>ModelNode</tt> hit at the given point or null
* if none was hit.
*/
public ModelNode nodeHitAt(final float[] pt) {
// If a node does not render, it is never hit
if (canRenderState != 0) {
return null;
}
checkLayout();
if (isHitVP(pt, this, getInverseTransformState(), lastChunk)) {
return this;
}
return null;
}
/**
* Returns the <code>ModelNode</code>, if any, hit by the
* point at coordinate x/y in the proxy tree starting at
* proxy.
*
* @param pt the x/y coordinate. Should never be null and be
* of size two. If not, the behavior is unspecified.
* The coordinates are in viewport space.
* @param proxy the root of the proxy tree to test.
* @return the <tt>ModelNode</tt> hit at the given point or null
* if none was hit.
*/
ModelNode proxyNodeHitAt(final float[] pt,
final ElementNodeProxy proxy) {
// If a node does not render, it is never hit
if (canRenderState != 0) {
return null;
}
TextProxy tp = (TextProxy) proxy;
tp.checkLayout();
if (isHitVP(pt, tp, tp.inverseTxf, tp.lastChunk)) {
return proxy;
}
return null;
}
/**
* Returns true if this node is hit by the input point. The input point
* is in viewport space. By default, a node is not hit, not
* matter what the input coordinate is.
*
* @param pt the x/y coordinate. Should never be null and be
* of size two. If not, the behavior is unspecified.
* The x/y coordinate is in the node's user space.
* @param trp the text rendering properties that apply to the layout
* rendering.
* @param itx the transform from viewport space to the text's user space.
* @param lc the <tt>GlyphLayout</tt> 'lastChunk' so that the method
* can be used by <tt>Text</tt> and <tt>TextProxy</tt>.
* @return true if the node is hit by the input point.
* @see #nodeHitAt
*/
protected boolean isHitVP(final float[] pt,
final TextRenderingProperties trp,
final Transform itx,
final GlyphLayout lc) {
// Node has to be visible to be a hit target
if (!trp.getVisibility()) {
return false;
}
GlyphLayout c = lc;
while (c != null) {
// Initialize hitChunkTransform to be from viewport space to the
// chunk's user space. This is why we apply the inverse transform
// second and why we invoke applyInverseTransform on the GlyphLayout
// instance.
ownerDocument.hitChunkTxf.setTransform(1, 0, 0, 1, 0, 0);
c.applyInverseTransform(trp, ownerDocument.hitChunkTxf);
ownerDocument.hitChunkTxf.mMultiply(itx);
if (c.isHitVP(pt, this, ownerDocument.hitChunkTxf)) {
return true;
}
c = c.prevSibling;
}
return false;
}
/**
* Paints this node into the input <code>RenderGraphics</code>. A
* <code>Text</code> node renders its associated <code>GlyphLayout</code>
* children.
*
* @param rg the <tt>RenderGraphics</tt> where the node should paint itself
*/
public void paint(final RenderGraphics rg) {
if (canRenderState != 0) {
return;
}
checkLayout();
if (DirtyAreaManager.ON) {
Tile primitiveTile = getRenderingTile();
if (primitiveTile == null
||
rg.getRenderingTile().isHit(primitiveTile)) {
// rg.setPrimitiveTile(primitiveTile);
paintRendered(rg, this, txf, firstChunk);
// nodeRendered is called seperately from paintRendered
// because paintRendered is used in different contexts,
// for example by proxy nodes to render, using their
// proxied node's paintRendered method.
nodeRendered();
}
} else {
paintRendered(rg, this, txf, firstChunk);
}
}
/**
* Paints this node into the input RenderGraphics, assuming the node
* is rendered.
*
* @param rg the <code>RenderGraphics</code> where the node should paint
* itself.
* @param tc the <code>TextRenderingProperties</code> holding the properties
* tha should be used for rendering into the input
* <code>RenderGraphics</code>
* @param tx the transform to use when rendering this node
* @param fc the first chunk to render.
* @see ElementNode#paint
* @see ElementNode#paintRendered
* @see ModelNode#canRender
*/
public void paintRendered(final RenderGraphics rg,
final TextRenderingProperties trc,
final Transform tx,
final GlyphLayout fc) {
if (!trc.getVisibility()) {
return;
}
rg.setPaintTarget(this);
rg.setPaintTransform(tx);
rg.setFontSize(trc.getFontSize());
rg.setTextAnchor(trc.getTextAnchor());
// Fill text. Only apply the fill properties
if (trc.getFill() != null) {
rg.setFillRule(trc.getFillRule());
rg.setFill(trc.getFill());
rg.setFillOpacity(trc.getFillOpacity());
fillText(rg, tx, fc);
}
// Stroke text. Only apply the stroke properties
if (trc.getStroke() != null) {
// We divide the strokeWidth by the fontSize to account
// for the additional scale factor (by fontSize). The
// additional scale factor is applied when rendering
// GlyphLayouts.
// See #GlyphLayout.applyTransform
rg.setStrokeWidth(trc.getStrokeWidth() / trc.getFontSize());
// do the same for dashArray and dashOffset if necessary
float[] dashArray = trc.getStrokeDashArray();
float[] trDashArray = null;
float trDashOffset = 0;
if (dashArray != null) {
float fontSize = trc.getFontSize();
if ((helperDashArray == null) ||
(helperDashArray.length != dashArray.length)) {
helperDashArray = new float[dashArray.length];
}
trDashArray = helperDashArray;
for (int i = 0; i < dashArray.length; ++i) {
trDashArray[i] = dashArray[i] / fontSize;
}
trDashOffset = trc.getStrokeDashOffset() / fontSize;
}
rg.setStrokeDashArray(trDashArray);
rg.setStrokeDashOffset(trDashOffset);
rg.setStroke(trc.getStroke());
rg.setStrokeOpacity(trc.getStrokeOpacity());
rg.setStrokeLineCap(trc.getStrokeLineCap());
rg.setStrokeLineJoin(trc.getStrokeLineJoin());
rg.setStrokeMiterLimit(trc.getStrokeMiterLimit());
drawText(rg, tx, fc);
}
}
/**
* Fills text.
*
* @param rg the <code>RenderGraphics</code> where the node should paint
* itself.
* @param tx the rendering transform.
* @param fc the first chunk to render.
*/
void fillText(final RenderGraphics rg,
final Transform tx,
final GlyphLayout fc) {
GlyphLayout c = fc;
while (c != null) {
ownerDocument.paintChunkTxf.setTransform(tx);
c.applyTransform(rg, ownerDocument.paintChunkTxf);
c.fillText(rg, ownerDocument.paintChunkTxf);
c = c.nextSibling;
}
}
/**
* Draws text.
*
* @param rg the <code>RenderGraphics</code> where the node should paint
* itself.
* @param tx the rendering transform.
* @param fc the first chunk to render.
*/
void drawText(final RenderGraphics rg,
final Transform tx,
final GlyphLayout fc) {
GlyphLayout c = fc;
while (c != null) {
ownerDocument.paintChunkTxf.setTransform(tx);
c.applyTransform(rg, ownerDocument.paintChunkTxf);
c.drawText(rg, ownerDocument.paintChunkTxf);
c = c.nextSibling;
}
}
/**
* Should be called whenever this node's rendering becomes dirty.
*/
final void renderingDirty() {
if (DirtyAreaManager.ON) {
renderingManager.dirty();
}
}
/**
* Simply notifies the RenderingManager.
*/
protected void nodeRendered() {
if (DirtyAreaManager.ON) {
renderingManager.rendered();
}
}
/**
* Clears all cached layout information. Because the computed transform
* property on text depends on the layout, clearLayouts on <code>Text</code>
* also clears the transform and property cache.
*/
public void clearLayouts() {
clearLayouts(true);
}
/**
* Implementations. Clears layouts but does not generate a
* modification notification.
*
* @param notif if true, then notifications are issued
* (i.e., calls to <code>modifyingNode</code> and
* <code>modifiedNode</code>).
*/
protected void clearLayouts(final boolean notif) {
if (notif) {
modifyingNode();
}
clearLayoutsQuiet();
if (notif) {
modifiedNode();
}
}
/**
* Clears all cached layout information
* but does not generate modification
* events for this node.
*/
protected void clearLayoutsQuiet() {
firstChunk = null;
lastChunk = null;
//
// Now, clear the proxies layouts
//
ElementNodeProxy p = firstProxy;
while (p != null) {
((TextProxy) p).clearLayoutsQuiet();
p = p.nextProxy;
}
}
/**
* Checks that the text's layout has been computed and computes it in
* case it was not.
*/
void checkLayout() {
if (firstChunk == null) {
firstChunk = layoutText(this);
GlyphLayout cur = firstChunk;
while (cur.nextSibling != null) {
cur = cur.nextSibling;
}
lastChunk = (GlyphLayout) cur;
}
}
/**
* @return true if the content string is not null and not empty or
* if this node has children. false otherwise.
*/
public boolean hasDescendants() {
return super.hasDescendants()
||
content != null && !("".equals(content));
}
/**
* Applies the xml:space policy
*
* @param s the array of characters which should be processed
* @return the index of the last (inclusive) relevant character
* after processing.
*/
protected int applyXMLSpace(final char[] s) {
switch (getXMLSpace()) {
case XML_SPACE_DEFAULT:
case XML_SPACE_INHERIT:
return applyXMLSpaceDefault(s);
default:
return applyXMLSpacePreserve(s);
}
}
/**
* Applies the xml:space="default" policy
*
* ** SPECIFICATION TEXT, SECTION 10.15 **
*
* When xml:space="default", the SVG user agent will do
* the following using a copy of the original character
* data content. First, it will remove all newline characters.
* Then it will convert all tab characters into space characters.
* Then, it will strip off all leading and trailing space
* characters. Then, all contiguous space characters will be
* consolidated
*
* @param s the array of characters which should be processed
* @return the index of the last (exclusive) relevant character
* after processing.
*/
protected int applyXMLSpaceDefault(final char[] s) {
int j = 0;
// Remove newline characters and
// convert tabs to white spaces.
// Output to s.
int i = 0;
for (; i < s.length; i++) {
if (s[i] != '\n') {
if (s[i] == '\t') {
s[i] = ' ';
}
s[j++] = s[i];
}
}
int length = j;
// Now, consolidate white spaces
// Trim leading spaces
for (i = 0; i < length; i++) {
if (s[i] != ' ') {
break;
}
}
// Consolidate spaces
j = 0;
s[j++] = s[i++];
for (; i < length; i++) {
// Keep all non-space characters
if (s[i] != ' ') {
s[j++] = s[i];
} else {
// Only keep space character if
// previous character is not a ' '
if (s[j - 1] != ' ') {
s[j++] = ' ';
}
}
}
// Trim trailing space
length = j;
if (s[j - 1] == ' ') {
length = j - 1;
}
return length;
}
/**
* Applies the xml:space="preserve" policy
*
* ** SPECIFICATION TEXT, SECTION 10.15 **
*
* When xml:space="preserve", the SVG user agent will do the
* following using a copy of the original character data content.
* It will convert all newline and tab characters into space
* characters. Then, it will draw all space characters, including
* leading, trailing and multiple contiguous space characters.
* Thus, when drawn with xml:space="preserve", the string "a b"
* (three spaces between "a" and "b") will produce a
* larger separation between "a" and "b" than "a b" (one space
* between "a" and "b").
*
* @param s the array of characters which should be processed
* @return the index of the last (exclusive) relevant character
* after processing.
*/
protected int applyXMLSpacePreserve(final char[] s) {
for (int i = 0; i < s.length; i++) {
if (s[i] == '\n' || s[i] == '\t') {
s[i] = ' ';
}
}
return s.length;
}
/**
* Invoked when text layout should be performed
* or checked.
*
* @param tp text is laid out for the input <tt>TextProperties</tt>
* @return an <code>GlyphLayout</code> instance containing the
* laid out text.
*/
public GlyphLayout layoutText(final TextProperties tp) {
// There is always at least one, possibly empty
// text chunk.
GlyphLayout startChunk = new GlyphLayout(ownerDocument);
GlyphLayout chunk = startChunk;
chunk.x = x[0];
chunk.y = y[0];
// Stop now if there is not actual content
if (content == null || "".equals(content)) {
return startChunk;
}
// Take care of white space handling
char[] s = content.toCharArray();
int length = applyXMLSpace(s);
// First, build the list of font faces which match the font properties
// for this text node. FontFace resolution is done through the root
// node element which holds the FontFace data base.
FontFace.Match defaultMatch = ownerDocument.resolveFontFaces(tp);
FontFace.Match firstMatch = defaultMatch.next;
FontFace.Match curMatch = null;
Glyph missingGlyph = defaultMatch.fontFace.getMissingGlyph();
// Now, for each character in the content string, find a matching
// font. The fontFace that matches can match up to n characters.
int cur = 0; // Current index in character array 's'
Glyph glyph = null;
GlyphProxy proxy = null, prevProxy = null;
float curAdv = 0;
float fontSize = tp.getFontSize();
while (cur < length) {
// =================================================================
// Check if we need to create a new text chunk
if (cur > 0 && (cur < x.length || cur < y.length)) {
// Create a new chunk. The current chunk becomes the
// previous chunk.
GlyphLayout prevChunk = chunk;
chunk = new GlyphLayout(ownerDocument);
prevProxy = null;
// We have finished computing the advance of
// the now previous chunk
prevChunk.advance = curAdv;
curAdv = 0;
if (cur < x.length) {
chunk.x = x[cur];
} else {
chunk.x = prevChunk.x + fontSize * prevChunk.advance;
}
if (cur < y.length) {
chunk.y = y[cur];
} else {
chunk.y = prevChunk.y;
}
// Chain the new chunk with the previous one
prevChunk.nextSibling = chunk;
chunk.prevSibling = prevChunk;
}
// =================================================================
// Find a matching glyph or default to the missing glyph.
glyph = null;
curMatch = firstMatch;
while (curMatch != null) {
if ((glyph = curMatch.fontFace.canDisplay(s, cur))
!=
null) {
break;
}
curMatch = curMatch.next;
}
if (glyph == null) {
if ((glyph = defaultMatch.fontFace.canDisplay(s, cur))
==
null) {
glyph = missingGlyph;
}
}
// Create a proxy for the glyph
proxy = new GlyphProxy(glyph);
// =================================================================
// Add the proxy to the current text chunk
chunk.add(proxy);
// Account for kerning, only if the previous glyph is part of
// the same text chunk.
if (prevProxy != null) {
float adjust =
((Font) proxy.proxied.parent)
.getHKern(prevProxy.proxied,
proxy.proxied);
curAdv -= adjust;
}
proxy.setX(curAdv);
if (rotate != null && cur < rotate.length) {
// The rotation is in the text coordinate system
proxy.setRotate(rotate[cur]);
}
cur += glyph.getLength();
// Increment the advance *in the text coordinate system*.
//
// IMPORTANT NOTE: it is very important to use the
// glyph's advance in the text coordinate space. It
// is not possible to work in the em square coordinate
// space for the advance because the em square may be
// different for each glyph in the text string (when
// different fonts are used).
curAdv += glyph.getTextHorizontalAdvanceX();
prevProxy = proxy;
}
chunk.advance = curAdv;
return startChunk;
}
/**
* Recomputes the transform cache, if one exists.
* @param parentTransform the Transform applied to this node's parent.
*/
protected void recomputeTransformState(final Transform parentTransform) {
txf = appendTransform(parentTransform, txf);
computeCanRenderTransformBit(txf);
inverseTxf = null;
// inverseTxf = computeInverseTransform(txf, parentTransform,
// inverseTxf);
renderingDirty();
}
/**
* Called when the computed value of the given property has changed.
* As we do not render any text children, this does not propage changes any
* further.
*
* @param propertyIndex index for the property whose value has changed.
* @param parentPropertyValue the value that children of this node should
* now inherit.
*/
protected void propagatePropertyState(final int propertyIndex,
final Object parentPropertyValue) {
// Propagate to proxies.
if (firstProxy != null) {
ElementNodeProxy proxy = firstProxy;
while (proxy != null) {
((CompositeGraphicsNodeProxy) proxy).proxiedPropertyStateChange(
propertyIndex, parentPropertyValue);
proxy = proxy.nextProxy;
}
}
}
/**
* Called when the computed value of the given float property has changed.
* As we do not render any text children, this does not propage changes any
* further.
*
* @param propertyIndex index for the property whose value has changed.
* @param parentPropertyValue the value that children of this node should
* now inherit.
*/
protected void propagateFloatPropertyState(
final int propertyIndex,
final float parentPropertyValue) {
// Propagate to proxies.
if (firstProxy != null) {
ElementNodeProxy proxy = firstProxy;
while (proxy != null) {
((CompositeGraphicsNodeProxy) proxy)
.proxiedFloatPropertyStateChange(propertyIndex,
parentPropertyValue);
proxy = proxy.nextProxy;
}
}
}
/**
* Called when the computed value of the given packed property has changed.
* As we do not render any text children, this does not propage changes any
* further.
*
* @param propertyIndex index for the property whose value has changed.
* @param parentPropertyValue the value that children of this node should
* now inherit.
*/
protected void propagatePackedPropertyState(final int propertyIndex,
final int parentPropertyValue) {
// Propagate to proxies.
if (firstProxy != null) {
ElementNodeProxy proxy = firstProxy;
while (proxy != null) {
((CompositeGraphicsNodeProxy) proxy)
.proxiedPackedPropertyStateChange(propertyIndex,
parentPropertyValue);
proxy = proxy.nextProxy;
}
}
}
/**
* Text handles x, y, and #text traits.
*
* @param traitName the name of the trait which the element may support.
* @return true if this element supports the given trait in one of the
* trait accessor methods.
*/
boolean supportsTrait(final String traitName) {
if (SVGConstants.SVG_X_ATTRIBUTE == traitName
||
SVGConstants.SVG_Y_ATTRIBUTE == traitName
||
SVGConstants.SVG_ROTATE_ATTRIBUTE == traitName
||
SVGConstants.SVG_TEXT_PSEUDO_ATTRIBUTE == traitName) {
return true;
} else {
return super.supportsTrait(traitName);
}
}
/**
* Text handles x, y, and #text traits.
*
* @param name the requested trait's name (e.g., "#text")
* @return the requested trait's string value (e.g., "Hello SVG Text")
*
* @throws DOMException with error code NOT_SUPPORTED_ERROR if the requested
* trait is not supported on this element or null.
* @throws DOMException with error code TYPE_MISMATCH_ERR if requested
* trait's computed value cannot be converted to a String (SVG Tiny only).
*/
public String getTraitImpl(final String name)
throws DOMException {
if (SVGConstants.SVG_X_ATTRIBUTE == name) {
return toStringTrait(getX());
} else if (SVGConstants.SVG_Y_ATTRIBUTE == name) {
return toStringTrait(getY());
} else if (SVGConstants.SVG_ROTATE_ATTRIBUTE == name) {
if (rotate == null) {
return "";
}
/*
float[] rt = new float[rotate.length];
for (int i = 0; i < rt.length; i++) {
rt[i] = MathSupport.toDegrees(rotate[i]);
}
*/
System.err.println(">>>>>>>>>>>>>>>>>> getTraitImpl("
+ name + ") : '"
+ toStringTrait(rotate) + "'");
return toStringTrait(rotate);
} else if (SVGConstants.SVG_TEXT_PSEUDO_ATTRIBUTE == name) {
if (content == null) {
return "";
}
return getContent();
} else {
return super.getTraitImpl(name);
}
}
/**
* Text handles x, y float traits.
*
* @param name the trait name (e.g., "y")
* @return the trait's float value (e.g., 10f)
*
* @throws DOMException with error code NOT_SUPPORTED_ERROR if the requested
* trait is not supported on this element or null.
* @throws DOMException with error code TYPE_MISMATCH_ERR if requested
* trait's computed value cannot be converted to a float
* @throws SecurityException if the application does not have the necessary
* privilege rights to access this (SVG) content.
*/
float getFloatTraitImpl(final String name)
throws DOMException {
if (SVGConstants.SVG_X_ATTRIBUTE == name) {
return getX()[0];
} else if (SVGConstants.SVG_Y_ATTRIBUTE == name) {
return getY()[0];
} else {
return super.getFloatTraitImpl(name);
}
}
/**
* @param traitName the trait name.
*/
TraitAnim createTraitAnimImpl(final String traitName) {
if (SVGConstants.SVG_X_ATTRIBUTE == traitName
||
SVGConstants.SVG_Y_ATTRIBUTE == traitName
||
SVGConstants.SVG_ROTATE_ATTRIBUTE == traitName) {
return new FloatTraitAnim(this, traitName, TRAIT_TYPE_FLOAT);
} else if (SVGConstants.SVG_TEXT_PSEUDO_ATTRIBUTE == traitName) {
return new StringTraitAnim(this, NULL_NS, traitName);
} else {
return super.createTraitAnimImpl(traitName);
}
}
/**
* Set the trait value as float.
*
* @param name the trait's name.
* @param value the trait's value.
*
* @throws DOMException with error code NOT_SUPPORTED_ERROR if the requested
* trait is not supported on this element.
* @throws DOMException with error code TYPE_MISMATCH_ERR if the requested
* trait's value cannot be specified as a float
* @throws DOMException with error code INVALID_ACCESS_ERR if the input
* value is an invalid value for the given trait.
*/
void setFloatArrayTrait(final String name, final float[][] value)
throws DOMException {
if (SVGConstants.SVG_X_ATTRIBUTE == name) {
setX(toTraitFloatArray(value));
} else if (SVGConstants.SVG_Y_ATTRIBUTE == name) {
setY(toTraitFloatArray(value));
} else if (SVGConstants.SVG_ROTATE_ATTRIBUTE == name) {
setRotate(toTraitFloatArray(value));
} else {
super.setFloatArrayTrait(name, value);
}
}
/**
* Validates the input trait value.
*
* @param traitName the name of the trait to be validated.
* @param value the value to be validated
* @param reqNamespaceURI the namespace of the element requesting
* validation.
* @param reqLocalName the local name of the element requesting validation.
* @param reqTraitNamespace the namespace of the trait which has the values
* value on the requesting element.
* @param reqTraitName the name of the trait which has the values value on
* the requesting element.
* @throws DOMException with error code INVALID_ACCESS_ERR if the input
* value is incompatible with the given trait.
*/
public float[][] validateFloatArrayTrait(
final String traitName,
final String value,
final String reqNamespaceURI,
final String reqLocalName,
final String reqTraitNamespace,
final String reqTraitName) throws DOMException {
if (SVGConstants.SVG_X_ATTRIBUTE == traitName
||
SVGConstants.SVG_Y_ATTRIBUTE == traitName) {
return toAnimatedFloatArray(parseFloatArrayTrait(traitName, value));
} else if (SVGConstants.SVG_ROTATE_ATTRIBUTE == traitName) {
float[][] v = toAnimatedFloatArray(parseFloatArrayTrait(traitName,
value));
// Convert from degrees to radians
/*
for (int i = 0; i < v.length; i++) {
v[i][0] = MathSupport.toRadians(v[i][0]);
}
*/
return v;
} else {
return super.validateFloatArrayTrait(traitName,
value,
reqNamespaceURI,
reqLocalName,
reqTraitNamespace,
reqTraitName);
}
}
/**
* Text handles x, y and #text traits.
*
* @param name the trait's name (e.g., "#text")
* @param value the trait's value (e.g, "Hello SVG Text")
*
* @throws DOMException with error code NOT_SUPPORTED_ERROR if the requested
* trait is not supported on this element or null.
* @throws DOMException with error code TYPE_MISMATCH_ERR if the requested
* trait's value cannot be specified as a String
* @throws DOMException with error code INVALID_ACCESS_ERR if the input
* value is an invalid value for the given trait or null.
* @throws DOMException with error code NO_MODIFICATION_ALLOWED_ERR: if
* attempt is made to change readonly trait.
*/
public void setTraitImpl(final String name, final String value)
throws DOMException {
if (SVGConstants.SVG_X_ATTRIBUTE == name) {
setX(parseFloatArrayTrait(name, value));
} else if (SVGConstants.SVG_Y_ATTRIBUTE == name) {
setY(parseFloatArrayTrait(name, value));
} else if (SVGConstants.SVG_ROTATE_ATTRIBUTE == name) {
float[] rt = parseFloatArrayTrait(name, value);
/*
if (rt != null) {
for (int i = 0; i < rt.length; i++) {
rt[i] = MathSupport.toRadians(rt[i]);
}
}
*/
setRotate(rt);
} else if (SVGConstants.SVG_TEXT_PSEUDO_ATTRIBUTE == name) {
if (value == null) {
throw illegalTraitValue(name, value);
}
setContent(value);
} else {
super.setTraitImpl(name, value);
}
}
/**
* Text handles x, y float traits.
*
* @param name the trait's name (e.g., "x")
* @param value the trait's value (e.g, 10f)
*
* @throws DOMException with error code NOT_SUPPORTED_ERROR if the requested
* trait is not supported on this element.
* @throws DOMException with error code TYPE_MISMATCH_ERR if the requested
* trait's value cannot be specified as a float
* @throws DOMException with error code INVALID_ACCESS_ERR if the input
* value is an invalid value for the given trait.
* @throws SecurityException if the application does not have the necessary
* privilege rights to access this (SVG) content.
*/
public void setFloatTraitImpl(final String name, final float value)
throws DOMException {
if (SVGConstants.SVG_X_ATTRIBUTE == name) {
setX(new float[] {value});
} else if (SVGConstants.SVG_Y_ATTRIBUTE == name) {
setY(new float[] {value});
} else {
super.setFloatTraitImpl(name, value);
}
}
/**
* @param name the name of the trait to convert.
* @param value the float trait value to convert.
*/
String toStringTrait(final String name, final float[][] value) {
if (SVGConstants.SVG_X_ATTRIBUTE == name
||
SVGConstants.SVG_Y_ATTRIBUTE == name) {
float[] v = new float[value.length];
for (int i = 0; i < value.length; i++) {
v[i] = value[i][0];
}
return toStringTrait(v);
} else if (SVGConstants.SVG_ROTATE_ATTRIBUTE == name) {
float[] v = new float[value.length];
for (int i = 0; i < value.length; i++) {
v[i] = value[i][0];
}
return toStringTrait(v);
} else {
return super.toStringTrait(name, value);
}
}
/**
* Debug helper.
* @return a <code>String</code> containing the text content
*/
public String toString() {
String xStr = "x[";
for (int i = 0; i < x.length; i++) {
xStr += x[i] + ", ";
}
xStr = xStr.substring(0, xStr.length() - 2);
xStr += "]";
String yStr = "y[";
for (int i = 0; i < y.length; i++) {
yStr += y[i] + ", ";
}
yStr = yStr.substring(0, yStr.length() - 2);
yStr += "]";
return super.toString() + "[\"" + content + "\"] " + xStr + " " + yStr;
}
/**
* @param newDisplay the new computed display value
*/
void setComputedDisplay(final boolean newDisplay) {
super.setComputedDisplay(newDisplay);
renderingDirty();
}
/**
* @param newVisibility the new computed visibility property.
*/
void setComputedVisibility(final boolean newVisibility) {
super.setComputedVisibility(newVisibility);
renderingDirty();
}
/**
* @param newFill the new computed fill property.
*/
void setComputedFill(final PaintServer newFill) {
this.fill = newFill;
renderingDirty();
}
/**
* @param newStroke the new computed stroke property.
*/
void setComputedStroke(final PaintServer newStroke) {
this.stroke = newStroke;
renderingDirty();
}
/**
* @param newStrokeWidth the new computed stroke-width property value.
*/
void setComputedStrokeWidth(final float newStrokeWidth) {
strokeWidth = newStrokeWidth;
// Only dirty rendering if the object is actually stroked.
if (stroke != null) {
renderingDirty();
}
}
/**
* @param newStrokeLineJoin the new computed value for stroke-line-join
*/
void setComputedStrokeLineJoin(final int newStrokeLineJoin) {
super.setComputedStrokeLineJoin(newStrokeLineJoin);
if (stroke != null) {
renderingDirty();
}
}
/**
* @param newStrokeLineCap the new value for the stroke-linecap property.
*/
void setComputedStrokeLineCap(final int newStrokeLineCap) {
super.setComputedStrokeLineCap(newStrokeLineCap);
if (stroke != null) {
renderingDirty();
}
}
/**
* @param newStrokeMiterLimit the new computed stroke-miterlimit property.
*/
void setComputedStrokeMiterLimit(final float newStrokeMiterLimit) {
strokeMiterLimit = newStrokeMiterLimit;
if (stroke != null && getStrokeLineJoin() == JOIN_MITER) {
renderingDirty();
}
}
/**
* @param newStrokeDashArray the new computed stroke-dasharray property
* value.
*/
void setComputedStrokeDashArray(final float[] newStrokeDashArray) {
strokeDashArray = newStrokeDashArray;
if (stroke != null) {
renderingDirty();
}
}
/**
* @param newStrokeDashOffset the new stroke-dashoffset computed property
* value.
*/
void setComputedStrokeDashOffset(final float newStrokeDashOffset) {
strokeDashOffset = newStrokeDashOffset;
if (stroke != null && strokeDashArray != null) {
renderingDirty();
}
}
/**
* @param newFillOpacity the new computed value for the fill opacity
* property.
*/
void setComputedFillOpacity(final float newFillOpacity) {
super.setComputedFillOpacity(newFillOpacity);
if (fill != null) {
renderingDirty();
}
}
/**
* @param newStrokeOpacity the new computed stroke-opacity property.
*/
void setComputedStrokeOpacity(final float newStrokeOpacity) {
super.setComputedStrokeOpacity(newStrokeOpacity);
if (stroke != null) {
renderingDirty();
}
}
/**
* @param newFontSize the new computed font-size property value.
*/
void setComputedFontSize(final float newFontSize) {
this.fontSize = newFontSize;
if (stroke != null || fill != null) {
renderingDirty();
}
computeCanRenderFontSizeBit(newFontSize);
}
/**
* @param newFontFamily the new computed font-family property value.
*/
void setComputedFontFamily(final String[] newFontFamily) {
this.fontFamily = newFontFamily;
clearLayoutsQuiet();
if (stroke != null || fill != null) {
renderingDirty();
}
}
/**
* Sets the value of the computed text anchor property.
*
* @param newTextAnchor the new value for the computed text anchor property.
*/
void setComputedTextAnchor(final int newTextAnchor) {
super.setComputedTextAnchor(newTextAnchor);
if (stroke != null || fill != null) {
renderingDirty();
}
}
/**
* @param newFontWeight new computed value for the font-weight property.
*/
void setComputedFontWeight(final int newFontWeight) {
super.setComputedFontWeight(newFontWeight);
clearLayoutsQuiet();
if (stroke != null || fill != null) {
renderingDirty();
}
}
/**
* @param newFontStyle the new computed font-style property.
*/
void setComputedFontStyle(final int newFontStyle) {
super.setComputedFontStyle(newFontStyle);
clearLayoutsQuiet();
if (stroke != null || fill != null) {
renderingDirty();
}
}
}
|
