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Update README and do a small code cleanup
2014-03-03 14:29:37 +00:00
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
PLEASE DO NOT DO WORK ON TOP OF THIS BRANCH.
I INTEND TO REWRITE HISTORY LATER!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
This branch is where I (jmarc) try to implement string-wise metrics
computation. The goal is to have both good metrics computation (and
font with proper kerning and ligatures) and better performance than
what we have with force_paint_single_char. Moreover there has been
some code factorization in TextMetrics, where the same row-breaking
algorithm was basically implemented 3 times.
Fix line breaking algorithm Break words longer than the screen width. The code is more complicated than I would like, but I have no better idea right now. Implement properly the notion of a row broken by a display inset. This is useful in different places. Also fix a bug with last line of a paragraph spotted by Kornel.
2013-07-23 14:24:01 +00:00
Update description of what has been done in the branch.
2014-05-12 09:02:22 +00:00
The bugs fixed and caused by this branch are tracked at ticket #9003:
http://www.lyx.org/trac/ticket/9003
Add a readme file describing the state of the branch
2013-06-18 08:18:32 +00:00
Remove obsolete code to handle Hebrew and Arabic characters This is handled by Qt now. Note that a small optimization (do not draw text that is to the left of WorkArea) is removed because it cannot be guaranteed to be exact anymore. It was probably not very useful anyway, and would become useless once the RowPainter is rewritten to use Row information. Update 00README_STR_METRICS_BRANCH.
2014-06-13 14:33:58 +00:00
Add a readme file describing the state of the branch
2013-06-18 08:18:32 +00:00
What is done:
Fix line breaking algorithm Break words longer than the screen width. The code is more complicated than I would like, but I have no better idea right now. Implement properly the notion of a row broken by a display inset. This is useful in different places. Also fix a bug with last line of a paragraph spotted by Kornel.
2013-07-23 14:24:01 +00:00
Add a readme file describing the state of the branch
2013-06-18 08:18:32 +00:00
* Make TextMetrics methods operate on Row objects: breakRow and
Implement real string width computation Important features: * widths are cached in a map * old behavior is still used when lyxrc.force_paint_single_char is true.
2013-06-25 06:18:25 +00:00
setRowHeight instead of rowBreakPoint and rowHeight.
Update README and do a small code cleanup
2014-03-03 14:29:37 +00:00
* Change breakRow operation to operate at strings level to compute
metrics The list of elements is stored in the row object in visual
ordering, not logical. This will eventually allow to get rid of the
Bidi class.
Implement real string width computation Important features: * widths are cached in a map * old behavior is still used when lyxrc.force_paint_single_char is true.
2013-06-25 06:18:25 +00:00
Change getColumnNearX to getPosNearX The semantics was bad: the old implementation would return pos - row.pos(), and then all user of the function had to re-add row.pos().
2013-12-20 13:02:31 +00:00
* rename getColumnNearX to getPosNearX (and change code accordingly).
It does not make sense to return a position relative to the start of
row, since nobody needs this.
* Re-implement cursorX and getPosNearX using row elements.
Re-implement getColumNearX using row elements The code is now so much shorter that it is scary... Expect that further changes will be necessary Cursor boundary is not handled yet.
2013-07-21 18:22:32 +00:00
Remove LyXRC option force_paint_single_char It was not honored anymore.
2014-07-08 21:12:09 +00:00
* Get rid of lyxrc.force_paint_single_char. This was a workaround that
is not necessary anymore.
Remove support for LyXRC::force_paint_single_char This workaround is not necessary anymore, and it complicates the code. The variable itself will be removed after the landing of the branch on master.
2014-05-14 13:36:44 +00:00
* Implement proper string metrics computation (with cache). Remove
Re-implement getColumNearX using row elements The code is now so much shorter that it is scary... Expect that further changes will be necessary Cursor boundary is not handled yet.
2013-07-21 18:22:32 +00:00
useless workarounds which disable kerning and ligatures.
Add a readme file describing the state of the branch
2013-06-18 08:18:32 +00:00
Remove obsolete code to handle Hebrew and Arabic characters This is handled by Qt now. Note that a small optimization (do not draw text that is to the left of WorkArea) is removed because it cannot be guaranteed to be exact anymore. It was probably not very useful anyway, and would become useless once the RowPainter is rewritten to use Row information. Update 00README_STR_METRICS_BRANCH.
2014-06-13 14:33:58 +00:00
* Draw also RtL text string-wise. This speeds-up drawing.
Implement real string width computation Important features: * widths are cached in a map * old behavior is still used when lyxrc.force_paint_single_char is true.
2013-06-25 06:18:25 +00:00
Speed-up drawing when text is not justified. Do not cut strings at separators in RowPainter when text is not justified. This speeds-up painting by reducing the number of strings to draw. Do also a modest cleanup of paintChar (remove dubious optimization).
2014-05-02 13:03:20 +00:00
* Do not cut strings at separators in RowPainter when text is not
justified. This speeds-up painting by reducing the number of strings
to draw.
Fix getColumnNearX for nested insets The horizontal position of the inset was not taken in account. The rounding is not always the same as with the old code, but this is not really important. Additional changes: * improve debug output of rows * remove Bidi& argument of the RowPainter constructor, since it is always an empty Bifi that is passed. This means that the Bidi class is not used at all any more in TextMetrics.cpp. The only remaining user is RowPainter.
2013-10-11 14:12:20 +00:00
Do not split words at selection boundary The display of partially-selected word is now done in a new Painter::text method which displays the string twice with different clip settings. This allows to catter for the case where Color_selectiontext is not black. Morover, the code that uses unicode override characters to force the direction of a string is moved to lstrings.h. Fixes: #9116
2014-05-23 16:59:53 +00:00
* Do not cut strings at selection boundary in RowPainter. This avoids
ligature/kerning breaking in latin text, and bad rendering problems
in Arabic.
Remove obsolete code to handle Hebrew and Arabic characters This is handled by Qt now. Note that a small optimization (do not draw text that is to the left of WorkArea) is removed because it cannot be guaranteed to be exact anymore. It was probably not very useful anyway, and would become useless once the RowPainter is rewritten to use Row information. Update 00README_STR_METRICS_BRANCH.
2014-06-13 14:33:58 +00:00
* Remove homebrew Arabic and Hebrew support from Encoding.cpp. We now
rely on Qt to do handle complex scripts.
Fix getColumnNearX for nested insets The horizontal position of the inset was not taken in account. The rounding is not always the same as with the old code, but this is not really important. Additional changes: * improve debug output of rows * remove Bidi& argument of the RowPainter constructor, since it is always an empty Bifi that is passed. This means that the Bidi class is not used at all any more in TextMetrics.cpp. The only remaining user is RowPainter.
2013-10-11 14:12:20 +00:00
Update README and do a small code cleanup
2014-03-03 14:29:37 +00:00
Remove obsolete code to handle Hebrew and Arabic characters This is handled by Qt now. Note that a small optimization (do not draw text that is to the left of WorkArea) is removed because it cannot be guaranteed to be exact anymore. It was probably not very useful anyway, and would become useless once the RowPainter is rewritten to use Row information. Update 00README_STR_METRICS_BRANCH.
2014-06-13 14:33:58 +00:00
Next steps:
Update README and do a small code cleanup
2014-03-03 14:29:37 +00:00
Update description of what has been done in the branch.
2014-05-12 09:02:22 +00:00
* Maybe get rid of LyXRC::rtl_support, which does not have a real use case.
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