[KDE/Mac] Review Request 120437: [OS X] patchset to make QtCurve 1.8.18+ build and work

Tue Sep 30 17:07:02 UTC 2014

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https://git.reviewboard.kde.org/r/120437/
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(Updated Sept. 30, 2014, 7:07 p.m.)

Review request for KDE Software on Mac OS X, André Marcelo Alvarenga, Yuri Chornoivan, and Yichao Yu.

Changes
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Added info about testing on Linux.

Repository: qtcurve

Description
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KDE is built on a cross-platform framework, and as such most applications (not directly linked to the Plasma desktop or X11) function or can be made to function fine.
Qt will use a native style by default, but supports the same style plugins as it does on other platforms, which bring the advantage of better (more precise) and more compact layout, without by definition reducing integration with the OS X desktop.

As such, QtCurve 1.8.14 worked "out of the box" (http://kde-look.org/content/show.php?content=40492, source from http://craigd.wikispaces.com/file/view) and I created a MacPorts port for it (https://trac.macports.org/ticket/44527). With the `kde4-workspace` port installed, one has almost the full customisation experience, minus everything window-manager related of course, nor full control of window backgrounds (not allowed by Qt and/or OS X).

The current version, which has seen many changes that require X11, was less straightforward to get to work, requiring a considerable collection of small changes.

The brunt of the present patchset consists of making the code in question conditional on the presence of `Q_WS_X11`, `Q_OS_MAC`, `__MACH__` or `__APPLE__` in non Qt code and `APPLE` in the cmake files. A few patches introduce functions not available on OS X (getline) or replace them with OS X specifics (`clock_gettime` -> `mach_absolute_timer`, nicely initialised with a dylib constructor function :) ) while others simply ensure that header files are found (or inexistent ones ignored).
The only functional guess/change I made is in `setOpacityProp()`, where I added a `w->setWindowOpacity( 0.01 * opacity )` for non Q_WS_X11 code, presuming that `prop` is simply on the 0-100 percentage as exposed in the preferences dialog.

Diffs
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  CMakeLists.txt f76fd1b 
  gtk2/common/config_file.c d732ca9 
  gtk2/style/CMakeLists.txt 01e8891 
  gtk2/style/qt_settings.c f5a5c98 
  lib/cairo/CMakeLists.txt c66c63c 
  lib/utils/CMakeLists.txt 15757ed 
  lib/utils/color.h 2c7081f 
  lib/utils/map.c a829e9e 
  lib/utils/process.c f2490ef 
  lib/utils/timer.c 879451e 
  qt4/config/CMakeLists.txt 15454e6 
  qt4/config/exportthemedialog.h 42590ec 
  qt4/config/exportthemedialog.cpp f39b86d 
  qt4/kwin/CMakeLists.txt 654604b 
  qt4/kwinconfig/CMakeLists.txt cbd8b62 
  qt4/style/CMakeLists.txt f38d029 
  qt4/style/qtcurve.cpp 7346c2f 
  qt4/style/qtcurve_plugin.cpp f390da4 
  qt5/CMakeLists.txt 1d0359e 
  qt5/style/CMakeLists.txt b6cb222 

Diff: https://git.reviewboard.kde.org/r/120437/diff/

Testing (updated)
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On OS X 10.6.8 against kdelibs 4.14.1 and Qt 4.8.6 . This OS requires to build v1.8.18 with a gcc version from MacPorts in order to get the necessary C++11 support; newer OS versions will use a recent clang version (system compiler).

- Qt4/KDE4 support: OK (see screenshot)
- GTk2 support: OK
- X11 support: builds but I have no idea what it's supposed to do
- Qt5 support: OK (against Qt 5.3.1 obtained with Digia's installer)

I tested building on Linux (Kubuntu 14.04, KDE SC 4.13.3, using clang 3.4) after the 2nd update to the patchset and that worked fine.
One issue that could use attention is the Qt5 detection: Qt5.3 is apparently required and `ENABLE_QT5` is not unset when an earlier Qt5 version is found instead.

File Attachments
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sample showing a native file dialog for comparison
  https://git.reviewboard.kde.org/media/uploaded/files/2014/09/30/02545bef-04d2-4a45-8955-e13bf7d063a0__Screen_shot_2014-09-30_at_14.05.54.png
KDE4 systemsettings and the QtCurve configuration dialog
  https://git.reviewboard.kde.org/media/uploaded/files/2014/09/30/fe5564f2-5e4e-485a-96d7-d192ff104261__QtCurve-1818.png
KDE4 systemsettings and QtCurve config dialog with QtCuve 1.8.14, for comparison
  https://git.reviewboard.kde.org/media/uploaded/files/2014/09/30/6bd8dd5a-9b94-43c3-88d9-c9be32a56b72__QtCurve-1814.png
a little convenience file for uploading to RB from KDevelop
  https://git.reviewboard.kde.org/media/uploaded/files/2014/09/30/39207a85-4092-4ea1-a181-051d0db5bb96__.reviewboardrc

Thanks,

René J.V. Bertin

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