Review Request 128191: Let KCapacityBar be usable in Qt Designer

[Elvis Angelaccio]

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https://git.reviewboard.kde.org/r/128191/
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Review request for KDE Frameworks and Christoph Feck.


Repository: kwidgetsaddons


Description
-------

Currently KCapacityBar doesn't seem to be usable from Qt Designer (unless I'm doing something wrong).
The class has only an explicit multi-argument constructor, but Qt Designer generates something like:

```c++
capacityBar = new KCapacityBar(widget_3);
```

which fails to compile because there is no explicit conversion from `QWidget*` to `KCapacityBar::DrawTextMode`:

```
error: no matching constructor for initialization of 'KCapacityBar'
        capacityBar = new KCapacityBar(widget_3);
                          ^            ~~~~~~~~
/usr/include/KF5/KWidgetsAddons/kcapacitybar.h:44:29: note: candidate constructor (the implicit copy constructor) not viable: no known conversion from
      'QWidget *' to 'const KCapacityBar' for 1st argument
class KWIDGETSADDONS_EXPORT KCapacityBar
                            ^
/usr/include/KF5/KWidgetsAddons/kcapacitybar.h:72:14: note: candidate constructor not viable: no known conversion from 'QWidget *' to
      'KCapacityBar::DrawTextMode' for 1st argument
    explicit KCapacityBar(DrawTextMode drawTextMode = DrawTextOutline, QWidget *parent = 0);
```

This patch simply adds another constructor with a single argument (the pointer to the parent).


Diffs
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  src/kcapacitybar.h 1a1f2e60f415904d6cf603a4b4e0cae1c543169a 
  src/kcapacitybar.cpp ecd2c13feb88f5c9e92086639bff48c6d0527779 

Diff: https://git.reviewboard.kde.org/r/128191/diff/


Testing
-------

KCapacityBar can now be used in a Qt Designer custom widget.


Thanks,

Elvis Angelaccio

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