[QGIS Commit] [qgis/Quantum-GIS] dd60a3: Update QgsDataDefinedButton

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/qgis/Quantum-GIS
  Commit: dd60a34fae326fcf28d3415d55140e3488f84d62
      https://github.com/qgis/Quantum-GIS/commit/dd60a34fae326fcf28d3415d55140e3488f84d62
  Author: Larry Shaffer <larrys at dakotacarto.com>
  Date:   2013-05-28 (Tue, 28 May 2013)

  Changed paths:
    M src/app/qgslabelinggui.cpp
    M src/gui/qgsdatadefinedbutton.cpp
    M src/gui/qgsdatadefinedbutton.h
    M src/ui/qgslabelingguibase.ui

  Log Message:
  -----------
  Update QgsDataDefinedButton

- Add 'Usage info' functions; displays in description and tool tip
- Reorganize menu, adding conceptual section titles
- Add ability to paste in expression
- Add ability to clear defined expression
- Add check for non-matching data field types
- Add better truncation of expressions in tool tip and menu