diff options
Diffstat (limited to 'libjava/classpath/javax/swing/text/GlyphView.java')
| -rw-r--r-- | libjava/classpath/javax/swing/text/GlyphView.java | 620 |
1 files changed, 438 insertions, 182 deletions
diff --git a/libjava/classpath/javax/swing/text/GlyphView.java b/libjava/classpath/javax/swing/text/GlyphView.java index d505274c91f..1e418d2e06a 100644 --- a/libjava/classpath/javax/swing/text/GlyphView.java +++ b/libjava/classpath/javax/swing/text/GlyphView.java @@ -38,14 +38,21 @@ exception statement from your version. */ package javax.swing.text; +import gnu.classpath.SystemProperties; + import java.awt.Color; +import java.awt.Container; import java.awt.Font; import java.awt.FontMetrics; import java.awt.Graphics; +import java.awt.Graphics2D; import java.awt.Rectangle; import java.awt.Shape; import java.awt.Toolkit; -import java.text.BreakIterator; +import java.awt.font.FontRenderContext; +import java.awt.font.TextHitInfo; +import java.awt.font.TextLayout; +import java.awt.geom.Rectangle2D; import javax.swing.SwingConstants; import javax.swing.event.DocumentEvent; @@ -248,10 +255,164 @@ public class GlyphView extends View implements TabableView, Cloneable } /** + * A GlyphPainter implementation based on TextLayout. This should give + * better performance in Java2D environments. + */ + private static class J2DGlyphPainter + extends GlyphPainter + { + + /** + * The text layout. + */ + TextLayout textLayout; + + /** + * Creates a new J2DGlyphPainter. + * + * @param str the string + * @param font the font + * @param frc the font render context + */ + J2DGlyphPainter(String str, Font font, FontRenderContext frc) + { + textLayout = new TextLayout(str, font, frc); + } + + /** + * Returns null so that GlyphView.checkPainter() creates a new instance. + */ + public GlyphPainter getPainter(GlyphView v, int p0, int p1) + { + return null; + } + + /** + * Delegates to the text layout. + */ + public float getAscent(GlyphView v) + { + return textLayout.getAscent(); + } + + /** + * Delegates to the text layout. + */ + public int getBoundedPosition(GlyphView v, int p0, float x, float len) + { + int pos; + TextHitInfo hit = textLayout.hitTestChar(len, 0); + if (hit.getCharIndex() == -1 && ! textLayout.isLeftToRight()) + pos = v.getEndOffset(); + else + { + pos = hit.isLeadingEdge() ? hit.getInsertionIndex() + : hit.getInsertionIndex() - 1; + pos += v.getStartOffset(); + } + return pos; + } + + /** + * Delegates to the text layout. + */ + public float getDescent(GlyphView v) + { + return textLayout.getDescent(); + } + + /** + * Delegates to the text layout. + */ + public float getHeight(GlyphView view) + { + return textLayout.getAscent() + textLayout.getDescent() + + textLayout.getLeading(); + } + + /** + * Delegates to the text layout. + */ + public float getSpan(GlyphView v, int p0, int p1, TabExpander te, float x) + { + float span; + if (p0 == v.getStartOffset() && p1 == v.getEndOffset()) + span = textLayout.getAdvance(); + else + { + int start = v.getStartOffset(); + int i0 = p0 - start; + int i1 = p1 - start; + TextHitInfo hit0 = TextHitInfo.afterOffset(i0); + TextHitInfo hit1 = TextHitInfo.afterOffset(i1); + float x0 = textLayout.getCaretInfo(hit0)[0]; + float x1 = textLayout.getCaretInfo(hit1)[0]; + span = Math.abs(x1 - x0); + } + return span; + } + + /** + * Delegates to the text layout. + */ + public Shape modelToView(GlyphView v, int pos, Bias b, Shape a) + throws BadLocationException + { + int offs = pos - v.getStartOffset(); + // Create copy here to protect original shape. + Rectangle2D bounds = a.getBounds2D(); + TextHitInfo hit = + b == Position.Bias.Forward ? TextHitInfo.afterOffset(offs) + : TextHitInfo.beforeOffset(offs); + float[] loc = textLayout.getCaretInfo(hit); + bounds.setRect(bounds.getX() + loc[0], bounds.getY(), 1, + bounds.getHeight()); + return bounds; + } + + /** + * Delegates to the text layout. + */ + public void paint(GlyphView view, Graphics g, Shape a, int p0, int p1) + { + // Can't paint this with plain graphics. + if (g instanceof Graphics2D) + { + Graphics2D g2d = (Graphics2D) g; + Rectangle2D b = a instanceof Rectangle2D ? (Rectangle2D) a + : a.getBounds2D(); + float x = (float) b.getX(); + float y = (float) b.getY() + textLayout.getAscent() + + textLayout.getLeading(); + // TODO: Try if clipping makes things faster for narrow views. + textLayout.draw(g2d, x, y); + } + } + + /** + * Delegates to the text layout. + */ + public int viewToModel(GlyphView v, float x, float y, Shape a, + Bias[] biasRet) + { + Rectangle2D bounds = a instanceof Rectangle2D ? (Rectangle2D) a + : a.getBounds2D(); + TextHitInfo hit = textLayout.hitTestChar(x - (float) bounds.getX(), 0); + int pos = hit.getInsertionIndex(); + biasRet[0] = hit.isLeadingEdge() ? Position.Bias.Forward + : Position.Bias.Backward; + return pos + v.getStartOffset(); + } + + } + + /** * The default <code>GlyphPainter</code> used in <code>GlyphView</code>. */ static class DefaultGlyphPainter extends GlyphPainter { + FontMetrics fontMetrics; + /** * Returns the full height of the rendered text. * @@ -259,9 +420,8 @@ public class GlyphView extends View implements TabableView, Cloneable */ public float getHeight(GlyphView view) { - Font font = view.getFont(); - FontMetrics metrics = Toolkit.getDefaultToolkit().getFontMetrics(font); - float height = metrics.getHeight(); + updateFontMetrics(view); + float height = fontMetrics.getHeight(); return height; } @@ -277,53 +437,27 @@ public class GlyphView extends View implements TabableView, Cloneable public void paint(GlyphView view, Graphics g, Shape a, int p0, int p1) { - Color oldColor = g.getColor(); - int height = (int) getHeight(view); + updateFontMetrics(view); + Rectangle r = a instanceof Rectangle ? (Rectangle) a : a.getBounds(); + TabExpander tabEx = view.getTabExpander(); Segment txt = view.getText(p0, p1); - Rectangle bounds = a.getBounds(); - TabExpander tabEx = null; - View parent = view.getParent(); - if (parent instanceof TabExpander) - tabEx = (TabExpander) parent; - - int width = Utilities.getTabbedTextWidth(txt, g.getFontMetrics(), - bounds.x, tabEx, txt.offset); - // Fill the background of the text run. - Color background = view.getBackground(); - if (background != null) - { - g.setColor(background); - g.fillRect(bounds.x, bounds.y, width, height); - } - // Draw the actual text. - g.setColor(view.getForeground()); - g.setFont(view.getFont()); - int ascent = g.getFontMetrics().getAscent(); - if (view.isSuperscript()) - // TODO: Adjust font for superscripting. - Utilities.drawTabbedText(txt, bounds.x, bounds.y + ascent - height / 2, - g, tabEx, txt.offset); - else if (view.isSubscript()) - // TODO: Adjust font for subscripting. - Utilities.drawTabbedText(txt, bounds.x, bounds.y + ascent + height / 2, - g, tabEx, txt.offset); - else - Utilities.drawTabbedText(txt, bounds.x, bounds.y + ascent, g, tabEx, - txt.offset); - if (view.isStrikeThrough()) - { - int strikeHeight = (int) (getAscent(view) / 2); - g.drawLine(bounds.x, bounds.y + strikeHeight, bounds.height + width, - bounds.y + strikeHeight); - } - if (view.isUnderline()) + // Find out the X location at which we have to paint. + int x = r.x; + int p = view.getStartOffset(); + if (p != p0) { - int lineHeight = (int) getAscent(view); - g.drawLine(bounds.x, bounds.y + lineHeight, bounds.height + width, - bounds.y + lineHeight); + int width = Utilities.getTabbedTextWidth(txt, fontMetrics,x, tabEx, + p); + x += width; } - g.setColor(oldColor); + // Find out Y location. + int y = r.y + fontMetrics.getHeight() - fontMetrics.getDescent(); + + // Render the thing. + g.setFont(fontMetrics.getFont()); + Utilities.drawTabbedText(txt, x, y, g, tabEx, p0); + } /** @@ -350,15 +484,18 @@ public class GlyphView extends View implements TabableView, Cloneable Shape a) throws BadLocationException { + updateFontMetrics(view); Element el = view.getElement(); - Font font = view.getFont(); - FontMetrics fm = view.getContainer().getFontMetrics(font); Segment txt = view.getText(el.getStartOffset(), pos); - int width = fm.charsWidth(txt.array, txt.offset, txt.count); - int height = fm.getHeight(); - Rectangle bounds = a.getBounds(); + Rectangle bounds = a instanceof Rectangle ? (Rectangle) a + : a.getBounds(); + TabExpander expander = view.getTabExpander(); + int width = Utilities.getTabbedTextWidth(txt, fontMetrics, bounds.x, + expander, + view.getStartOffset()); + int height = fontMetrics.getHeight(); Rectangle result = new Rectangle(bounds.x + width, bounds.y, - bounds.x + width, height); + 0, height); return result; } @@ -381,11 +518,10 @@ public class GlyphView extends View implements TabableView, Cloneable public float getSpan(GlyphView view, int p0, int p1, TabExpander te, float x) { - Element el = view.getElement(); - Font font = view.getFont(); - FontMetrics fm = Toolkit.getDefaultToolkit().getFontMetrics(font); + updateFontMetrics(view); Segment txt = view.getText(p0, p1); - int span = Utilities.getTabbedTextWidth(txt, fm, (int) x, te, p0); + int span = Utilities.getTabbedTextWidth(txt, fontMetrics, (int) x, te, + p0); return span; } @@ -402,9 +538,8 @@ public class GlyphView extends View implements TabableView, Cloneable */ public float getAscent(GlyphView v) { - Font font = v.getFont(); - FontMetrics fm = v.getContainer().getFontMetrics(font); - return fm.getAscent(); + updateFontMetrics(v); + return fontMetrics.getAscent(); } /** @@ -420,9 +555,8 @@ public class GlyphView extends View implements TabableView, Cloneable */ public float getDescent(GlyphView v) { - Font font = v.getFont(); - FontMetrics fm = v.getContainer().getFontMetrics(font); - return fm.getDescent(); + updateFontMetrics(v); + return fontMetrics.getDescent(); } /** @@ -437,13 +571,12 @@ public class GlyphView extends View implements TabableView, Cloneable */ public int getBoundedPosition(GlyphView v, int p0, float x, float len) { + updateFontMetrics(v); TabExpander te = v.getTabExpander(); Segment txt = v.getText(p0, v.getEndOffset()); - Font font = v.getFont(); - FontMetrics fm = v.getContainer().getFontMetrics(font); - int pos = Utilities.getTabbedTextOffset(txt, fm, (int) x, + int pos = Utilities.getTabbedTextOffset(txt, fontMetrics, (int) x, (int) (x + len), te, p0, false); - return pos; + return pos + p0; } /** @@ -460,9 +593,33 @@ public class GlyphView extends View implements TabableView, Cloneable public int viewToModel(GlyphView v, float x, float y, Shape a, Bias[] biasRet) { - Rectangle b = a.getBounds(); - int pos = getBoundedPosition(v, v.getStartOffset(), b.x, x - b.x); - return pos; + Rectangle r = a instanceof Rectangle ? (Rectangle) a : a.getBounds(); + int p0 = v.getStartOffset(); + int p1 = v.getEndOffset(); + TabExpander te = v.getTabExpander(); + Segment s = v.getText(p0, p1); + int offset = Utilities.getTabbedTextOffset(s, fontMetrics, r.x, (int) x, + te, p0); + int ret = p0 + offset; + if (ret == p1) + ret--; + biasRet[0] = Position.Bias.Forward; + return ret; + } + + private void updateFontMetrics(GlyphView v) + { + Font font = v.getFont(); + if (fontMetrics == null || ! font.equals(fontMetrics.getFont())) + { + Container c = v.getContainer(); + FontMetrics fm; + if (c != null) + fm = c.getFontMetrics(font); + else + fm = Toolkit.getDefaultToolkit().getFontMetrics(font); + fontMetrics = fm; + } } } @@ -474,12 +631,22 @@ public class GlyphView extends View implements TabableView, Cloneable /** * The start offset within the document for this view. */ - private int startOffset; + private int offset; /** * The end offset within the document for this view. */ - private int endOffset; + private int length; + + /** + * The x location against which the tab expansion is done. + */ + private float tabX; + + /** + * The tab expander that is used in this view. + */ + private TabExpander tabExpander; /** * Creates a new <code>GlyphView</code> for the given <code>Element</code>. @@ -489,8 +656,8 @@ public class GlyphView extends View implements TabableView, Cloneable public GlyphView(Element element) { super(element); - startOffset = -1; - endOffset = -1; + offset = 0; + length = 0; } /** @@ -524,7 +691,21 @@ public class GlyphView extends View implements TabableView, Cloneable protected void checkPainter() { if (glyphPainter == null) - glyphPainter = new DefaultGlyphPainter(); + { + if ("true".equals( + SystemProperties.getProperty("gnu.javax.swing.noGraphics2D"))) + { + glyphPainter = new DefaultGlyphPainter(); + } + else + { + Segment s = getText(getStartOffset(), getEndOffset()); + glyphPainter = new J2DGlyphPainter(s.toString(), getFont(), + new FontRenderContext(null, + false, + false)); + } + } } /** @@ -536,9 +717,80 @@ public class GlyphView extends View implements TabableView, Cloneable */ public void paint(Graphics g, Shape a) { - Element el = getElement(); checkPainter(); - getGlyphPainter().paint(this, g, a, getStartOffset(), getEndOffset()); + int p0 = getStartOffset(); + int p1 = getEndOffset(); + + Rectangle r = a instanceof Rectangle ? (Rectangle) a : a.getBounds(); + Container c = getContainer(); + + Color fg = getForeground(); + JTextComponent tc = null; + if (c instanceof JTextComponent) + { + tc = (JTextComponent) c; + if (! tc.isEnabled()) + fg = tc.getDisabledTextColor(); + } + Color bg = getBackground(); + if (bg != null) + { + g.setColor(bg); + System.err.println("fill background: " + bg); + g.fillRect(r.x, r.y, r.width, r.height); + } + + + // Paint layered highlights if there are any. + if (tc != null) + { + Highlighter h = tc.getHighlighter(); + if (h instanceof LayeredHighlighter) + { + LayeredHighlighter lh = (LayeredHighlighter) h; + lh.paintLayeredHighlights(g, p0, p1, a, tc, this); + } + } + + g.setColor(fg); + glyphPainter.paint(this, g, a, p0, p1); + boolean underline = isUnderline(); + boolean striked = isStrikeThrough(); + if (underline || striked) + { + View parent = getParent(); + // X coordinate. + if (parent != null && parent.getEndOffset() == p1) + { + // Strip whitespace. + Segment s = getText(p0, p1); + while (s.count > 0 && Character.isWhitespace(s.array[s.count - 1])) + { + p1--; + s.count--; + } + } + int x0 = r.x; + int p = getStartOffset(); + TabExpander tabEx = getTabExpander(); + if (p != p0) + x0 += (int) glyphPainter.getSpan(this, p, p0, tabEx, x0); + int x1 = x0 + (int) glyphPainter.getSpan(this, p0, p1, tabEx, x0); + // Y coordinate. + int y = r.y + r.height - (int) glyphPainter.getDescent(this); + if (underline) + { + int yTmp = y; + yTmp += 1; + g.drawLine(x0, yTmp, x1, yTmp); + } + if (striked) + { + int yTmp = y; + yTmp -= (int) glyphPainter.getAscent(this); + g.drawLine(x0, yTmp, x1, yTmp); + } + } } @@ -555,19 +807,24 @@ public class GlyphView extends View implements TabableView, Cloneable float span = 0; checkPainter(); GlyphPainter painter = getGlyphPainter(); - if (axis == X_AXIS) + switch (axis) { - Element el = getElement(); + case X_AXIS: TabExpander tabEx = null; View parent = getParent(); if (parent instanceof TabExpander) tabEx = (TabExpander) parent; span = painter.getSpan(this, getStartOffset(), getEndOffset(), tabEx, 0.F); + break; + case Y_AXIS: + span = painter.getHeight(this); + if (isSuperscript()) + span += span / 3; + break; + default: + throw new IllegalArgumentException("Illegal axis"); } - else - span = painter.getHeight(this); - return span; } @@ -623,13 +880,7 @@ public class GlyphView extends View implements TabableView, Cloneable */ public TabExpander getTabExpander() { - TabExpander te = null; - View parent = getParent(); - - if (parent instanceof TabExpander) - te = (TabExpander) parent; - - return te; + return tabExpander; } /** @@ -642,9 +893,17 @@ public class GlyphView extends View implements TabableView, Cloneable */ public float getTabbedSpan(float x, TabExpander te) { - Element el = getElement(); - return getGlyphPainter().getSpan(this, el.getStartOffset(), - el.getEndOffset(), te, x); + checkPainter(); + TabExpander old = tabExpander; + tabExpander = te; + if (tabExpander != old) + { + // Changing the tab expander will lead to a relayout in the X_AXIS. + preferenceChanged(null, true, false); + } + tabX = x; + return getGlyphPainter().getSpan(this, getStartOffset(), + getEndOffset(), tabExpander, x); } /** @@ -658,23 +917,8 @@ public class GlyphView extends View implements TabableView, Cloneable */ public float getPartialSpan(int p0, int p1) { - Element el = getElement(); - Document doc = el.getDocument(); - Segment seg = new Segment(); - try - { - doc.getText(p0, p1 - p0, seg); - } - catch (BadLocationException ex) - { - AssertionError ae; - ae = new AssertionError("BadLocationException must not be thrown " - + "here"); - ae.initCause(ex); - throw ae; - } - FontMetrics fm = null; // Fetch font metrics somewhere. - return Utilities.getTabbedTextWidth(seg, fm, 0, null, p0); + checkPainter(); + return glyphPainter.getSpan(this, p0, p1, tabExpander, tabX); } /** @@ -686,10 +930,11 @@ public class GlyphView extends View implements TabableView, Cloneable */ public int getStartOffset() { - int start = startOffset; - if (start < 0) - start = super.getStartOffset(); - return start; + Element el = getElement(); + int offs = el.getStartOffset(); + if (length > 0) + offs += offset; + return offs; } /** @@ -701,12 +946,17 @@ public class GlyphView extends View implements TabableView, Cloneable */ public int getEndOffset() { - int end = endOffset; - if (end < 0) - end = super.getEndOffset(); - return end; + Element el = getElement(); + int offs; + if (length > 0) + offs = el.getStartOffset() + offset + length; + else + offs = el.getEndOffset(); + return offs; } + private Segment cached = new Segment(); + /** * Returns the text segment that this view is responsible for. * @@ -717,10 +967,9 @@ public class GlyphView extends View implements TabableView, Cloneable */ public Segment getText(int p0, int p1) { - Segment txt = new Segment(); try { - getDocument().getText(p0, p1 - p0, txt); + getDocument().getText(p0, p1 - p0, cached); } catch (BadLocationException ex) { @@ -731,7 +980,7 @@ public class GlyphView extends View implements TabableView, Cloneable throw ae; } - return txt; + return cached; } /** @@ -743,16 +992,19 @@ public class GlyphView extends View implements TabableView, Cloneable */ public Font getFont() { - Element el = getElement(); - AttributeSet atts = el.getAttributes(); - String family = StyleConstants.getFontFamily(atts); - int size = StyleConstants.getFontSize(atts); - int style = Font.PLAIN; - if (StyleConstants.isBold(atts)) - style |= Font.BOLD; - if (StyleConstants.isItalic(atts)) - style |= Font.ITALIC; - Font font = new Font(family, style, size); + Document doc = getDocument(); + Font font = null; + if (doc instanceof StyledDocument) + { + StyledDocument styledDoc = (StyledDocument) doc; + font = styledDoc.getFont(getAttributes()); + } + else + { + Container c = getContainer(); + if (c != null) + font = c.getFont(); + } return font; } @@ -885,33 +1137,21 @@ public class GlyphView extends View implements TabableView, Cloneable */ public View breakView(int axis, int p0, float pos, float len) { - if (axis == Y_AXIS) - return this; - - checkPainter(); - GlyphPainter painter = getGlyphPainter(); - - // Try to find a suitable line break. - BreakIterator lineBreaker = BreakIterator.getLineInstance(); - Segment txt = new Segment(); - try - { - int start = getStartOffset(); - int length = getEndOffset() - start; - getDocument().getText(start, length, txt); - } - catch (BadLocationException ex) + View brokenView = this; + if (axis == X_AXIS) { - AssertionError err = new AssertionError("BadLocationException must not " - + "be thrown here."); - err.initCause(ex); - throw err; + checkPainter(); + int end = glyphPainter.getBoundedPosition(this, p0, pos, len); + int breakLoc = getBreakLocation(p0, end); + if (breakLoc != -1) + end = breakLoc; + if (p0 != getStartOffset() || end != getEndOffset()) + { + brokenView = createFragment(p0, end); + if (brokenView instanceof GlyphView) + ((GlyphView) brokenView).tabX = pos; + } } - int breakLocation = - Utilities.getBreakLocation(txt, getContainer().getFontMetrics(getFont()), - (int) pos, (int) (pos + len), - getTabExpander(), p0); - View brokenView = createFragment(p0, breakLocation); return brokenView; } @@ -937,28 +1177,36 @@ public class GlyphView extends View implements TabableView, Cloneable weight = super.getBreakWeight(axis, pos, len); else { - // FIXME: Commented out because the Utilities.getBreakLocation method - // is still buggy. The GoodBreakWeight is a reasonable workaround for - // now. -// int startOffset = getStartOffset(); -// int endOffset = getEndOffset() - 1; -// Segment s = getText(startOffset, endOffset); -// Container c = getContainer(); -// FontMetrics fm = c.getFontMetrics(c.getFont()); -// int x0 = (int) pos; -// int x = (int) (pos + len); -// int breakLoc = Utilities.getBreakLocation(s, fm, x0, x, -// getTabExpander(), -// startOffset); -// if (breakLoc == startOffset || breakLoc == endOffset) -// weight = GoodBreakWeight; -// else -// weight = ExcellentBreakWeight; - weight = GoodBreakWeight; + checkPainter(); + int start = getStartOffset(); + int end = glyphPainter.getBoundedPosition(this, start, pos, len); + if (end == 0) + weight = BadBreakWeight; + else + { + if (getBreakLocation(start, end) != -1) + weight = ExcellentBreakWeight; + else + weight = GoodBreakWeight; + } } return weight; } + private int getBreakLocation(int start, int end) + { + int loc = -1; + Segment s = getText(start, end); + for (char c = s.last(); c != Segment.DONE && loc == -1; c = s.previous()) + { + if (Character.isWhitespace(c)) + { + loc = s.getIndex() - s.getBeginIndex() + 1 + start; + } + } + return loc; + } + /** * Receives notification that some text attributes have changed within the * text fragment that this view is responsible for. This calls @@ -971,7 +1219,7 @@ public class GlyphView extends View implements TabableView, Cloneable */ public void changedUpdate(DocumentEvent e, Shape a, ViewFactory vf) { - preferenceChanged(this, true, true); + preferenceChanged(null, true, true); } /** @@ -986,7 +1234,7 @@ public class GlyphView extends View implements TabableView, Cloneable */ public void insertUpdate(DocumentEvent e, Shape a, ViewFactory vf) { - preferenceChanged(this, true, false); + preferenceChanged(null, true, false); } /** @@ -1001,7 +1249,7 @@ public class GlyphView extends View implements TabableView, Cloneable */ public void removeUpdate(DocumentEvent e, Shape a, ViewFactory vf) { - preferenceChanged(this, true, false); + preferenceChanged(null, true, false); } /** @@ -1015,11 +1263,12 @@ public class GlyphView extends View implements TabableView, Cloneable */ public View createFragment(int p0, int p1) { + checkPainter(); + Element el = getElement(); GlyphView fragment = (GlyphView) clone(); - if (p0 != getStartOffset()) - fragment.startOffset = p0; - if (p1 != getEndOffset()) - fragment.endOffset = p1; + fragment.offset = p0 - el.getStartOffset(); + fragment.length = p1 - p0; + fragment.glyphPainter = glyphPainter.getPainter(fragment, p0, p1); return fragment; } @@ -1031,14 +1280,21 @@ public class GlyphView extends View implements TabableView, Cloneable */ public float getAlignment(int axis) { + checkPainter(); float align; if (axis == Y_AXIS) { - checkPainter(); GlyphPainter painter = getGlyphPainter(); float height = painter.getHeight(this); float descent = painter.getDescent(this); - align = (height - descent) / height; + float ascent = painter.getAscent(this); + if (isSuperscript()) + align = 1.0F; + else if (isSubscript()) + align = height > 0 ? (height - (descent + (ascent / 2))) / height + : 0; + else + align = height > 0 ? (height - descent) / height : 0; } else align = super.getAlignment(axis); |
