File	Doc	Category	Size	Date	Package
GlyphLayout.java	API Doc	phoneME MR2 API (J2ME)	12257	Wed May 02 18:00:36 BST 2007	com.sun.perseus.model

GlyphLayout

• java.lang.Object

Fields Summary
protected float	advance The overally layout's advance
protected float	x The chunk's x-axis position
protected float	y The chunk's y-axis position
protected GlyphProxy	firstChild The first child
protected GlyphProxy	lastChild The last child
protected GlyphLayout	prevSibling Previous sibling.
protected GlyphLayout	nextSibling Next sibling
protected DocumentNode	ownerDocument Owner Document, to get cache objects.
protected float[]	helperDashArray Used to scale dash array values.

Constructors Summary
GlyphLayout(DocumentNode doc) param doc the DocumentNode scope. this.ownerDocument = doc;

Methods Summary
public void	add(GlyphProxy proxy) Appends an element at the end of the list param proxy the proxy to add to this GlyphLayout throws NullPointerException if the input argument is null. if (proxy == null) { throw new NullPointerException(); } if (firstChild == null) { firstChild = proxy; lastChild = proxy; proxy.nextSibling = null; proxy.prevSibling = null; } else { lastChild.nextSibling = proxy; proxy.nextSibling = null; proxy.prevSibling = lastChild; lastChild = proxy; }
com.sun.perseus.j2d.Box	addBBox(com.sun.perseus.j2d.Box bbox, com.sun.perseus.j2d.Transform t) 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, GlyphProxy gp = firstChild; while (gp != null) { ownerDocument.bboxGlyphTxf.setTransform(t); gp.applyTransform(ownerDocument.bboxGlyphTxf); bbox = gp.addNodeBBox(bbox, ownerDocument.bboxGlyphTxf); gp = gp.nextSibling; } return bbox;
protected final com.sun.perseus.j2d.Tile	addRenderingTile(com.sun.perseus.j2d.Tile tile, com.sun.perseus.j2d.TextRenderingProperties trp, com.sun.perseus.j2d.Transform t) Add this GlyphLayout rendering tile to the input Tile. param tile the Tile instance whose bounds should be expanded. May be null. param trp the TextRenderingProperties describing the nodes rendering characteristics. param t the Transform to the requested tile space, from this node's user space. return the expanded tile. if (trp.getStroke() != null) { GlyphProxy gp = firstChild; while (gp != null) { ownerDocument.bboxGlyphTxf.setTransform(t); gp.applyTransform(ownerDocument.bboxGlyphTxf); tile = gp.addRenderingTile(tile, trp, t); gp = (GlyphProxy) gp.nextSibling; } } else { GlyphProxy gp = firstChild; float strokeWidth = trp.getStrokeWidth(); while (gp != null) { ownerDocument.bboxGlyphTxf.setTransform(t); gp.applyTransform(ownerDocument.bboxGlyphTxf); trp.setStrokeWidth(strokeWidth / gp.proxied.emSquareScale); tile = gp.addRenderingTile(tile, trp, t); gp = (GlyphProxy) gp.nextSibling; } } return tile;
protected void	applyInverseTransform(com.sun.perseus.j2d.TextRenderingProperties trp, com.sun.perseus.j2d.Transform tx) Applies the inverse of the chunk's position adjustment due to the text anchor's value. param trp the TextRenderingProperties on which the font-size property is defined. param tx the Transform to apply the inverse transform to. // Account for the text-anchor translation switch (trp.getTextAnchor()) { default: break; case TextNode.TEXT_ANCHOR_MIDDLE: tx.mTranslate(advance / 2f, 0); break; case TextNode.TEXT_ANCHOR_END: tx.mTranslate(advance, 0); break; } // Scale according to the fontSize float fontSize = trp.getFontSize(); if (fontSize > 0) { tx.mScale(1 / fontSize); } // Position the text chunk on the current // text position. tx.mTranslate(-x, -y);
protected void	applyTransform(com.sun.perseus.j2d.TextRenderingProperties trp, com.sun.perseus.j2d.Transform tx) Applies the chunk's position adjustment due to the text anchor's value. param trp the TextRenderingProperties on which the font-size property is defined. param tx the Transform to apply additional node transforms to. This is guaranteed to no be null. // Position the text chunk on the current // text position. tx.mTranslate(x, y); // Scale according to the fontSize float fontSize = trp.getFontSize(); if (fontSize > 0) { tx.mScale(fontSize); } // Account for the text-anchor translation switch (trp.getTextAnchor()) { default: break; case TextNode.TEXT_ANCHOR_MIDDLE: tx.mTranslate(-advance / 2f, 0); break; case TextNode.TEXT_ANCHOR_END: tx.mTranslate(-advance, 0); break; }
void	drawText(com.sun.perseus.j2d.RenderGraphics rg, com.sun.perseus.j2d.Transform tx) Draws text. param rg the RenderGraphics where the node should paint itself. param tx the rendering transform. GlyphProxy c = firstChild; float strokeWidth = rg.getStrokeWidth(); float dashOffset = rg.getStrokeDashOffset(); float[] dashArray = rg.getStrokeDashArray(); if ((dashArray != null) && ((helperDashArray == null) || (helperDashArray.length != dashArray.length))) { helperDashArray = new float[dashArray.length]; } float lastEMSquareScale = 0; while (c != null) { ownerDocument.paintGlyphTxf.setTransform(tx); c.applyTransform(ownerDocument.paintGlyphTxf); rg.setTransform(ownerDocument.paintGlyphTxf); if (lastEMSquareScale != c.proxied.emSquareScale) { rg.setStrokeWidth(strokeWidth / c.proxied.emSquareScale); if (dashArray != null) { float emSquareScale = c.proxied.emSquareScale; float lengthSum = 0; for (int i = 0; i < dashArray.length; ++i) { helperDashArray[i] = dashArray[i] / emSquareScale; lengthSum += dashArray[i]; } float reducedDashOffset = dashOffset; if (lengthSum > 0) { int r = (int)(dashOffset / lengthSum); reducedDashOffset -= r * lengthSum; } rg.setStrokeDashArray(helperDashArray); rg.setStrokeDashOffset(reducedDashOffset / emSquareScale); } lastEMSquareScale = c.proxied.emSquareScale; } if (c.proxied.d != null) { rg.draw(c.proxied.d); } c = c.nextSibling; } // Restore stroke-width property. rg.setStrokeWidth(strokeWidth); if (dashArray != null) { // Restore dash array & offset rg.setStrokeDashArray(dashArray); rg.setStrokeDashOffset(dashOffset); }
void	fillText(com.sun.perseus.j2d.RenderGraphics rg, com.sun.perseus.j2d.Transform tx) Fills text. param rg the RenderGraphics where the node should paint itself. param tx the rendering transform. GlyphProxy c = firstChild; while (c != null) { ownerDocument.paintGlyphTxf.setTransform(tx); c.applyTransform(ownerDocument.paintGlyphTxf); rg.setTransform(ownerDocument.paintGlyphTxf); if (c.proxied.d != null) { rg.fill(c.proxied.d); } c = c.nextSibling; }
protected boolean	isHitVP(float[] pt, com.sun.perseus.j2d.TextRenderingProperties trp, com.sun.perseus.j2d.Transform chunkTxf) 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 TextRenderingProperties containing the properties applicable to the hit detection operation. This is used because the same node may be referenced multiple times by different proxies. return true if the node is hit by the input point. see #nodeHitAt GlyphProxy c = lastChild; while (c != null) { ownerDocument.hitGlyphTxf.setTransform(1, 0, 0, 1, 0, 0); c.applyInverseTransform(ownerDocument.hitGlyphTxf); ownerDocument.hitGlyphTxf.mMultiply(chunkTxf); ownerDocument.hitGlyphTxf.transformPoint(pt, ownerDocument.upt); if (c.isHit(ownerDocument.upt, trp)) { return true; } c = c.prevSibling; } return false;
public java.lang.String	toString() return the string description of this layout. return "GlyphLayout[x=" + x + ", y=" + y + " advance=" + advance + "]";