D16928: Do not show "+" for positive numbers if user do not want this

[Yuri Chornoivan]

yurchor created this revision.
yurchor added reviewers: KDE Edu, broulik.
Herald added projects: KDE Edu, Documentation.
Herald added subscribers: kde-doc-english, kde-edu.
yurchor requested review of this revision.

REVISION SUMMARY
  BUG: 262690
  
  F6427235: settings-diagram.png <https://phabricator.kde.org/F6427235>
  The new option on the "Diagram" page.
  
  F6427236: kmplot.png <https://phabricator.kde.org/F6427236>
  Plot without "+"'s for positive numbers.

TEST PLAN
  1. Save some plot in the unpatched version.
  2. Patch, compile and start the new version. Open the saved file in it. "+" should be shown for all positive numbers.
  3. Uncheck the item on the "Diagram" page of settings. "+"'s should disappear from the plot.
  4. Save the file. Close the application window. Restart the patched version. Check the "Show "+" for positive numbers" option again. Open the saved file from disk. No "+"'s should be shown in the patched version.
  5. Check the  "Show "+" for positive numbers". "+"'s should appear again.
  6. Open the saved file in the old version. No problems should be found, apart from the "+"'s are shown again.

REPOSITORY
  R334 KmPlot

REVISION DETAIL
  https://phabricator.kde.org/D16928

AFFECTED FILES
  doc/index.docbook
  doc/settings-diagram.png
  kmplot/kmplot.kcfg
  kmplot/kmplotio.cpp
  kmplot/settingspagediagram.ui
  kmplot/view.cpp

To: yurchor, #kde_edu, broulik
Cc: kde-edu, kde-doc-english, skadinna, narvaez, apol
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