diff options
Diffstat (limited to 'WebCore/mathml/RenderMathMLRoot.cpp')
-rw-r--r-- | WebCore/mathml/RenderMathMLRoot.cpp | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/WebCore/mathml/RenderMathMLRoot.cpp b/WebCore/mathml/RenderMathMLRoot.cpp index 4ed8c19..da303c9 100644 --- a/WebCore/mathml/RenderMathMLRoot.cpp +++ b/WebCore/mathml/RenderMathMLRoot.cpp @@ -99,7 +99,10 @@ void RenderMathMLRoot::paint(PaintInfo& info, int tx, int ty) if (info.context->paintingDisabled()) return; - + + if (!firstChild() || !lastChild()) + return; + tx += x(); ty += y(); @@ -203,11 +206,15 @@ void RenderMathMLRoot::paint(PaintInfo& info, int tx, int ty) void RenderMathMLRoot::layout() { RenderBlock::layout(); - + + if (!firstChild() || !lastChild()) + return; + int maxHeight = toRenderBoxModelObject(lastChild())->offsetHeight(); RenderObject* current = lastChild()->firstChild(); - current->style()->setVerticalAlign(BASELINE); + if (current) + current->style()->setVerticalAlign(BASELINE); if (!maxHeight) maxHeight = style()->fontSize(); @@ -228,6 +235,8 @@ void RenderMathMLRoot::layout() // Positioning of the index RenderBoxModelObject* indexBox = toRenderBoxModelObject(firstChild()->firstChild()); + if (!indexBox) + return; int indexShift = indexBox->offsetWidth() + topStartShift; int radicalHeight = static_cast<int>((1 - gRadicalTopLeftPointYPos) * maxHeight); |