Now that SingleParUpdate does not always lead to a full screen update
when the height of the paragraph changes (see new behavior of
updateMatrics(bool)), it is necessary to make sure that the grey area
below the main page is always repainted.
(cherry picked from commit 1a11abe4394272f521cd63993e426c136e0e9b6c)
With the branch-test.lyx file from #12297, loading takes forever when
previews are activated. This is because each preview element causes a
full screen metrics recomputation.
This commit just skips these calls and only does one when all previews
have been obtained. As a result, computing the previews takes 1 second
instead of 25 seconds on branch-test.lyx.
Part of bug #12297.
(cherry picked from commit 244969330108a89f4be93d3b2eb9024bdb756204)
The most visible part of this commit is the move of part of
BufferView::updateMetrics to a new TextMetrics::updateMetrics. This
new method makes sure that metrics are known for all visible paragraphs
(starting from anchor), and that the positions of the paragraphs have
been recorded.
This method is called up to 3 times in BufferView::updateMetrics:
* unconditionally, to update all visible metrics,
* then, if the bottom of the document is visible and too high, after
updating the anchor ypos,
* and similarly if the top of the document is visible and too low.
This fixes for example the case where one jumps to Section 5.3 at the
end of Tutorial and 'scroll_below_document' is false.
Some now redundant code is removed from BufferView::scrollToCursor.
The anchor-setting code in BufferView::draw is not clearly useful, but
left here just in case. It generates a debug warning, though.
Part of bug #12297.
(cherry picked from commit f15d2ebf3819913114ab93d1ff7e140cb26b03d5)
Replace flag parameter for updateMetrics() by a `force' boolean. When
it is false, the method keeps the metrics of paragraphs that are still
visible in WorkArea instead of computing everything afresh. All it has
to do is update their positions.
Add code to updateMetrics() to update the value of the anchor pit/ypos
(similar to the one in draw()).
Update processUpdateFlags() to use this when update flag is ForceDraw.
Modify scrollDocView() to just change the anchor paragraph position
when the scrolling operation would re-use some of the existing
paragraphs.
The time needed to update the metrics when scrolling with mouse in the
branch-test.lyx document is now divided by 20!
Part of bug #12297.
(cherry picked from commit 08010c6a5e425b3f2d0d625536e3a571c90a0482)
This avoids code with position/ascent/descent that is difficult to follow.
No change in function intended.
(cherry picked from commit 0b6105b9245350e428c73deee88af2cd7c0d4732)
This can make a big difference for a very large branch that contains
lots of equations.
This is complementary to the previous patch, since instead of reducing
the number of calls to updatePosCache, we make it faster.
In the same test of scrolling with mouse wheel through the
branch-test.lyx document, one finds a 23% improvement for
BufferView::updateMetrics().
Part of bug #12297.
(cherry picked from commit 7f85024f80601b15634fb5e771bba51435ad429f)
The setting of insets positions was done twice in updateMetrics.
When one of the paragraph is a huge branch, this can be very expensive.
This leads to a 17% improvement on updateMetrics time on a scrolling test.
Part of bug #12297
(cherry picked from commit d19ade9a611d3ecf6840c5eb43291cb268ad6f4f)
The idea of single par update is to try to re-break only the paragraph
containing the cursor (if this paragraph contains insets etc.,
re-breaking will recursively descend).
The existing single paragraph update mechanism was tailored to work
only at top level. Indeed changing a paragraph nested into an inset may
lead to larger changes.
This commit tries a rather naive approach that seems to work well: we
need a full redraw if either
1/ the height has changed
or
2/ the width has changed and it was equal to the text metrics width;
the goal is to catch the case of a one-row inset that grows with
its contents, but optimize the case of typing in a short paragraph
part of a larger inset.
NOTE: if only the height has changed, then it should be
possible to update all metrics at minimal cost. However,
since this is risky, we do not try that right now.
Part of bug #12297.
(cherry picked from commit 9a96726bcd06d565c3027011fea954656aa46668)
We were doing this on every mouse movement. I.e., for every single
pixel the mouse traverses. It can be expensive if there are a lot
of math insets.
(cherry picked from commit 4e8aa89eb96cd73e6630deea6fd6b9d3039aab6c)
- avoid copying of configure.log
- avoid copying of chkconfig.ltx
There is a report of a hang on first start of LyX with new major release.
The removal of the chkconfig.ltx (leftover from early LyX versions) fixed the issue.
(cherry picked from commit 945a02e2e176e0f8fb9c599700c693032a01fa5d)
This is used by getDate/getTime, which actually should not be
InsetInfoParams methods, but functions in anonymous namespace.
(cherry picked from commit 51562ff37732f4949441bd8c2b55692b0719093a)
Qt::ImAnchorRectangle has only been introduced in Qt 5.7. Since it is
used to answer a query from the IM machinery, there is no need for
it with older Qt versions.
(cherry picked from commit 6260689fd552a5e83d2970dcfd4d5ba7e09443e7)
