JDK-5084107 : Regression: JTextPane doesn't wrap with RTL ComponentOrientation
  • Type: Bug
  • Component: client-libs
  • Sub-Component: javax.swing
  • Affected Version: 5.0u1
  • Priority: P2
  • Status: Resolved
  • Resolution: Fixed
  • OS: generic
  • CPU: generic
  • Submitted: 2004-08-07
  • Updated: 2012-10-09
  • Resolved: 2004-09-22
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Other JDK 6
5.0u1 betaFixed 6Fixed
Description
When a right-to-left ComponentOrientation is set on a JTextPane, it doesn't wrap text.  This works properly in JDK 1.4.2.
Comments
CONVERTED DATA BugTraq+ Release Management Values COMMIT TO FIX: 1.5.0_01 mustang FIXED IN: 1.5.0_01 mustang INTEGRATED IN: 1.5.0_01 mustang
28-09-2004
EVALUATION Component in question is "JTextPane". I've updated the synopsis and description as appropriate. Committing to 1.5.0_01. Note, I've been able to reproduce this in Tiger b18. Haven't tried earlier builds. ###@###.### 2004-08-09 ====== TextLayout.hitTestChar behavior was changed in 1.5 (08/2003) For rtl layout layout.hitTestChar(Float.MAX_VALUE, 0) was TextHitInfo(-1) in 1.4.2 now it is TextHitInfo(0) GlyphPainter2.getBoundedPosition depends upon -1 value. When we get 0 it assumes the view is unbreakable thus there is no wrapping. This assumption was incorrect. javaDoc for TextLayout.hitTestChar --- public TextHitInfo hitTestChar(float x, float y, Rectangle2D bounds) Returns a TextHitInfo corresponding to the specified point. Coordinates outside the bounds of the TextLayout map to hits on the leading edge of the first logical character, or the trailing edge of the last logical character, as appropriate, regardless of the position of that character in the line. Only the direction along the baseline is used to make this evaluation. Parameters: x - the x offset from the origin of this TextLayout y - the y offset from the origin of this TextLayout bounds - the bounds of the TextLayout Returns: a hit describing the character and edge (leading or trailing) under the specified point. --- GlyphPainter2.getBoundedPosition is incorrect. Using layout.hitTestChar to get last logical position wich fits into given span is wrong. The question is what is the correct way. ###@###.### 2004-08-13 --- This should fix getBoundedPosition: // note: this only works because swing uses TextLayouts that are // only pure rtl or pure ltr TextHitInfo hit; if (layout.isLeftToRight()) { hit = layout.hitTestChar(len, 0); } else { hit = layout.hitTesetChar(layout.getAdvance() - len, 0); } return v.getStartOffset() + hit.getCharIndex(); ###@###.### 2004-08-27
27-08-2004