File	Doc	Category	Size	Date	Package
GlyphPainter1.java	API Doc	Java SE 5 API	6687	Fri Aug 26 14:58:16 BST 2005	javax.swing.text

GlyphPainter1

• java.lang.Object
  • javax.swing.text.GlyphView$GlyphPainter

Fields Summary
FontMetrics	metrics

Constructors Summary

Methods Summary
public float	getAscent(javax.swing.text.GlyphView v) Fetches the ascent above the baseline for the glyphs corresponding to the given range in the model. sync(v); return metrics.getAscent();
public int	getBoundedPosition(javax.swing.text.GlyphView v, int p0, float x, float len) Determines the best location (in the model) to break the given view. This method attempts to break on a whitespace location. If a whitespace location can't be found, the nearest character location is returned. param v the view param p0 the location in the model where the fragment should start its representation >= 0 param pos the graphic location along the axis that the broken view would occupy >= 0; this may be useful for things like tab calculations param len specifies the distance into the view where a potential break is desired >= 0 return the model location desired for a break see View#breakView sync(v); TabExpander expander = v.getTabExpander(); Segment s = v.getText(p0, v.getEndOffset()); int index = Utilities.getTabbedTextOffset(s, metrics, (int)x, (int)(x+len), expander, p0, false); SegmentCache.releaseSharedSegment(s); int p1 = p0 + index; return p1;
public float	getDescent(javax.swing.text.GlyphView v) Fetches the descent below the baseline for the glyphs corresponding to the given range in the model. sync(v); return metrics.getDescent();
public float	getHeight(javax.swing.text.GlyphView v) sync(v); return metrics.getHeight();
public float	getSpan(javax.swing.text.GlyphView v, int p0, int p1, javax.swing.text.TabExpander e, float x) Determine the span the glyphs given a start location (for tab expansion). sync(v); Segment text = v.getText(p0, p1); int width = Utilities.getTabbedTextWidth(text, metrics, (int) x, e, p0); SegmentCache.releaseSharedSegment(text); return width;
public java.awt.Shape	modelToView(javax.swing.text.GlyphView v, int pos, javax.swing.text.Position$Bias bias, java.awt.Shape a) sync(v); Rectangle alloc = (a instanceof Rectangle) ? (Rectangle)a : a.getBounds(); int p0 = v.getStartOffset(); int p1 = v.getEndOffset(); TabExpander expander = v.getTabExpander(); Segment text; if(pos == p1) { // The caller of this is left to right and borders a right to // left view, return our end location. return new Rectangle(alloc.x + alloc.width, alloc.y, 0, metrics.getHeight()); } if ((pos >= p0) && (pos <= p1)) { // determine range to the left of the position text = v.getText(p0, pos); int width = Utilities.getTabbedTextWidth(text, metrics, alloc.x, expander, p0); SegmentCache.releaseSharedSegment(text); return new Rectangle(alloc.x + width, alloc.y, 0, metrics.getHeight()); } throw new BadLocationException("modelToView - can't convert", p1);
public void	paint(javax.swing.text.GlyphView v, java.awt.Graphics g, java.awt.Shape a, int p0, int p1) Paints the glyphs representing the given range. sync(v); Segment text; TabExpander expander = v.getTabExpander(); Rectangle alloc = (a instanceof Rectangle) ? (Rectangle)a : a.getBounds(); // determine the x coordinate to render the glyphs int x = alloc.x; int p = v.getStartOffset(); if (p != p0) { text = v.getText(p, p0); int width = Utilities.getTabbedTextWidth(text, metrics, x, expander, p); x += width; SegmentCache.releaseSharedSegment(text); } // determine the y coordinate to render the glyphs int y = alloc.y + metrics.getHeight() - metrics.getDescent(); // render the glyphs text = v.getText(p0, p1); g.setFont(metrics.getFont()); Utilities.drawTabbedText(v, text, x, y, g, expander,p0); SegmentCache.releaseSharedSegment(text);
void	sync(javax.swing.text.GlyphView v) Font f = v.getFont(); if ((metrics == null) || (! f.equals(metrics.getFont()))) { // fetch a new FontMetrics Container c = v.getContainer(); metrics = (c != null) ? c.getFontMetrics(f) : Toolkit.getDefaultToolkit().getFontMetrics(f); }
public int	viewToModel(javax.swing.text.GlyphView v, float x, float y, java.awt.Shape a, javax.swing.text.Position$Bias[] biasReturn) Provides a mapping from the view coordinate space to the logical coordinate space of the model. param v the view containing the view coordinates param x the X coordinate param y the Y coordinate param a the allocated region to render into param biasReturn always returns Position.Bias.Forward as the zero-th element of this array return the location within the model that best represents the given point in the view see View#viewToModel sync(v); Rectangle alloc = (a instanceof Rectangle) ? (Rectangle)a : a.getBounds(); int p0 = v.getStartOffset(); int p1 = v.getEndOffset(); TabExpander expander = v.getTabExpander(); Segment text = v.getText(p0, p1); int offs = Utilities.getTabbedTextOffset(text, metrics, alloc.x, (int) x, expander, p0); SegmentCache.releaseSharedSegment(text); int retValue = p0 + offs; if(retValue == p1) { // No need to return backward bias as GlyphPainter1 is used for // ltr text only. retValue--; } biasReturn[0] = Position.Bias.Forward; return retValue;