needed for AIX's xlC 3.6.4 compiler. Add test to configure to check
compiler version. NOTE: also adding hpux and aix check for keyboardutils.
r=cls@seawood.org
# 119179
Make the line list doubly linked and access it through a list class and iterators.
Stop recomputing margins on all of the children of each block in the reflow chain (which causes O(N^2) state recovery during incremental reflow). Instead, add a second dirty bit to the lines and walk backwards through the line list to recompute vertical margins only when either dirty bit is set and the previous line was not reflowed. Add nsIFrame::IsEmpty to identify frames through which margins collapse.
Fix O(N^2) propagation of float damage by maintaining a set of intervals damaged by floats (bug 61962) and be sure to damage the correct areas (bug 48138).
Introduce nsCollapsingMargin to do correct collapsing of combinations of positive and negative margins (bug 50142).
Clean up some odds and ends and fix another smaller O(N^2) problem in nsBlockFrame::AddFrames.
r=attinasi, rbs sr=waterson
r=karnaze
The problem was we were over-eager in optimizing away a resize reflow for lines
that contain %-aware children. We were only looking at the first-level children
of a line, not all the children. Now, we compute a bit for each inline container
based on it's children, true if any of them are %-aware wrt any width measurement.
We propogate this bit upwards to a bit on the line itself, and check this bit during reflow.
r=buster
bug 18545 ([FLOAT] Problem Centering <TABLE> with <DIV> tag)
r=troy
bugs 18827, 19579, 22327 24782, 26512, 30124, 31849, 32846 (floater behavior wrong)
The primary change here is to determine if a block is impacted by a floater, and if so
mark the block's lines dirty when appropriate.
r=troy
no bug number. performance work. reduced the size of some reflow data structures by
collapsing multiple fields into a single bit field.
r=troy
Fix bugs 24186, 26996, and 26998 by reworking the quirks-mode line-height handling so that inline elements that do not have text as children (or meet a few other conditions that show the author wants real CSS support) will not increase the size of the line, but will be as close to their correct size as possible without enlarging the line. This fix includes emulation of the strange Nav4/IE quirk that a block's line-height is enforced on the first line of LI elements and the last line of LI, DD, and DT elements. Many of the changes are removing an earlier fix for 24186.
r=buster
smontagu%netscape.com
waterson%netscape.com
jdunn%netscape.com
dbaron%fas.harvard.edu
buster%netscape.com
rbs%maths.uq.edu.au
mkaply%us.ibm.com
troy%netscape.com
tbogard%aol.net
dmose%mozilla.org
kipp%netscape.com
nisheeth%netscape.com