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Small updates to painting analysis document

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Jean-Marc Lasgouttes 2023-09-10 20:24:39 +02:00
parent be1bf5c05c
commit 9c49e72f7e
1 changed files with 7 additions and 7 deletions
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14
development/PAINTING_ANALYSIS
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@ -20,9 +20,9 @@ following section. Some actions are proposed.
** SinglePar update
This flag only has an effect in the current BufferView, but I think it
is useful in other views too. Doing this will require some work on the
update pipeline, though.
This flag only has an effect in the current BufferView and at
top-level, but I think it is useful in other views too. Doing this
will require some work on the update pipeline, though.
** Buffer::change issues
@ -76,11 +76,8 @@ a lot the amount of stuff to redraw.
It should not be necessary to access the Paragraph object to draw.
Adding the static elements to Row is a lot of work, but worth it IMO.
** do not add the vertical margin of main text to first/last row
Would make code cleaner. Probably no so difficult.
** When a paragraph ends with a newline, compute correctly the height of the extra row.
** Merging bv::updateMetrics and tm::metrics
While the full metrics computation tries hard to limit the number of
@ -148,6 +145,9 @@ tm::redoParagraph will call Inset::metrics for each inset. In the case
of text insets, this will invoke recursively tm::metrics, which redoes
all the paragraphs of the inset.
Then, a single big row is created in tm::tokenizeParagraph, which is
later broken in multiple rows by tm::breakParagraph.
At the end of the function, bv::updatePosCache is called. It triggers
a repaint of the document with a NullPainter (a painter that does
nothing). This has the effect of caching all insets positions.