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Commit 76f879cd authored by Matan Ziv-Av's avatar Matan Ziv-Av Committed by Kurt Hindenburg
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Draw characters in exact positions 

QT can't be made to draw monospaced text (if the font does not cooperate),
so avoid combining characters, using a QPainter::drawText() call for each
character.

For bidi text support this change requires konsole to reorder and reshape
the characters. This is done using the ICU library (which QT also uses).

This change allows for some improvements related to text rendering:

- More precise bidi reordering, which is no longer changed by characters'
  attributes and selection.
- underlines drawn separately from the text, allowing for differing
  underline modes (double, curly, dashed, dotted, colored).
- Overriding font for emoji characters.

This commit fixes a few bugs and addresses a lot more:

Feature requests: More standard conforming RTL and various underlines:
BUG: 403729
BUG: 387811

Using non-monospace font:
BUG: 416508
BUG: 452087
BUG: 425973
BUG: 430822
BUG: 442742
BUG: 441037
BUG: 430822



Emoji:
BUG: 440070
CCBUG: 450017
CCBUG: 445846
CCBUG: 453086

Regression: devanagari rendering
CCBUG: 381593
CCBUG: 451716
parent 4e875cdf
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