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| Summary: | HtmlRenderer may produce NullPointerException | ||
|---|---|---|---|
| Product: | platform | Reporter: | toker5 <toker5> |
| Component: | Window System | Assignee: | David Simonek <dsimonek> |
| Status: | RESOLVED FIXED | ||
| Severity: | blocker | Keywords: | SIMPLEFIX |
| Priority: | P3 | ||
| Version: | 6.x | ||
| Hardware: | All | ||
| OS: | All | ||
| Issue Type: | DEFECT | Exception Reporter: | |
thanks for finding, fixed in #a90b6c79c3f7 Integrated into 'main-golden', will be available in build *200812050201* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress) Changeset: http://hg.netbeans.org/main/rev/a90b6c79c3f7 User: Dafe Simonek <dsimonek@netbeans.org> Log: #153014: count with possibility that graphics.getClip() can return null |
By using a custom ViewTabDisplayerUI, I managed to have the HtmlRenderer's _renderPlainString() method produce NullPointerExceptions when the tabs got too narrow to hold its title. The reason is that HtmlRenderer#_renderPlainString() uses the result of g.getClip() as an argument to the constructor of Area on line 407: Shape shape = g.getClip(); if (s != null) { Area area = new Area(shape); area.intersect(new Area(new Rectangle(x, y, w, h))); g.setClip(area); } else { g.setClip(new Rectangle(x, y, w, h)); } g.drawString("...", x, y); g.setClip(shape); In my ViewTabDisplayerUI I paint to the graphics context of a BufferedImage (for transparency effects), and because of that, no clip is set, i.e. g.getClip() returns null. There's no problem to avoid this issue, but HtmlRenderer should definitely check if the clip is null. This might also be an issue in other methods of HtmlRenderer (not tested).