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This is an automatically generated e-mail. To reply, visit:
<a href="https://git.reviewboard.kde.org/r/127387/">https://git.reviewboard.kde.org/r/127387/</a>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">logic looks good and it's mostly nitpicking on my side.</p></pre>
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<a href="https://git.reviewboard.kde.org/r/127387/diff/1/?file=453201#file453201line66" style="color: black; font-weight: bold; text-decoration: underline;">autotests/testbackendloader.cpp</a>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">qputenv</span><span class="p">(</span><span class="s">"KSCREEN_BACKEND"</span><span class="p">,</span> <span class="n">_b</span><span class="p">);</span></pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">instead of storing the env variable you could also just use:
qputenv("KSCREEN_BACKEND", QByteArray());</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">as you always set it to empty in the ctor.</p></pre>
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<a href="https://git.reviewboard.kde.org/r/127387/diff/1/?file=453202#file453202line74" style="color: black; font-weight: bold; text-decoration: underline;">src/backendmanager.cpp</a>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">auto</span> <span class="n">_inprocess</span> <span class="o">=</span> <span class="n">qgetenv</span><span class="p">(</span><span class="s">"KSCREEN_BACKEND_INPROCESS"</span><span class="p">);</span></pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">const</p></pre>
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<a href="https://git.reviewboard.kde.org/r/127387/diff/1/?file=453202#file453202line75" style="color: black; font-weight: bold; text-decoration: underline;">src/backendmanager.cpp</a>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="n">_inprocess</span><span class="p">.</span><span class="n">isEmpty</span><span class="p">()))</span> <span class="p">{</span></pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">personally I find the parentethes around <code style="text-rendering: inherit;color: #4444cc;padding: 0;white-space: normal;margin: 0;line-height: inherit;">_inprocess.isEmpty()</code> confusing. I would just do:
if (!_inprocess.isEmpty())</p></pre>
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<a href="https://git.reviewboard.kde.org/r/127387/diff/1/?file=453202#file453202line77" style="color: black; font-weight: bold; text-decoration: underline;">src/backendmanager.cpp</a>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">QByteArrayList</span> <span class="n">falses</span><span class="p">;</span></pre></td>
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<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">this brings the following improvements:
<em style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: normal;"> two less appends
</em> the general improvments of fooLiteral</p></pre>
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<a href="https://git.reviewboard.kde.org/r/127387/diff/1/?file=453202#file453202line87" style="color: black; font-weight: bold; text-decoration: underline;">src/backendmanager.cpp</a>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">qDebug</span><span class="p">()</span> <span class="o"><<</span> <span class="s">"auto-setting oop"</span><span class="p">;</span></pre></td>
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<a href="https://git.reviewboard.kde.org/r/127387/diff/1/?file=453202#file453202line90" style="color: black; font-weight: bold; text-decoration: underline;">src/backendmanager.cpp</a>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">qDebug</span><span class="p">()</span> <span class="o"><<</span> <span class="s">"auto-setting ip"</span><span class="p">;</span></pre></td>
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<a href="https://git.reviewboard.kde.org/r/127387/diff/1/?file=453202#file453202line150" style="color: black; font-weight: bold; text-decoration: underline;">src/backendmanager.cpp</a>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">auto</span> <span class="n">env_kscreen_backend</span> <span class="o">=</span> <span class="n">qgetenv</span><span class="p">(</span><span class="s">"KSCREEN_BACKEND"</span><span class="p">);</span></pre></td>
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<a href="https://git.reviewboard.kde.org/r/127387/diff/1/?file=453202#file453202line165" style="color: black; font-weight: bold; text-decoration: underline;">src/backendmanager.cpp</a>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">if</span> <span class="p">(</span><span class="n">f</span><span class="p">.</span><span class="n">fileName</span><span class="p">().</span><span class="n">toLower</span><span class="p">().</span><span class="n">startsWith</span><span class="p">(</span><span class="n">QString</span><span class="p">(</span><span class="s">"ksc_%1"</span><span class="p">).</span><span class="n">arg</span><span class="p">(</span><span class="n">backendFilter</span><span class="p">.</span><span class="n">toLower</span><span class="p">())))</span> <span class="p">{</span></pre></td>
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<a href="https://git.reviewboard.kde.org/r/127387/diff/1/?file=453202#file453202line168" style="color: black; font-weight: bold; text-decoration: underline;">src/backendmanager.cpp</a>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">if</span> <span class="p">(</span><span class="n">f</span><span class="p">.</span><span class="n">fileName</span><span class="p">().</span><span class="n">startsWith</span><span class="p">(</span><span class="s">"KSC_QScreen"</span><span class="p">))</span> <span class="p">{</span></pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">same here: QLatin1String</p></pre>
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<a href="https://git.reviewboard.kde.org/r/127387/diff/1/?file=453202#file453202line180" style="color: black; font-weight: bold; text-decoration: underline;">src/backendmanager.cpp</a>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">const</span> <span class="n">QString</span> <span class="n">backendFilter</span> <span class="o">=</span> <span class="n">QLatin1String</span><span class="p">(</span><span class="s">"KSC_*"</span><span class="p">);</span></pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">this looks weird - maybe QStringLiteral?</p></pre>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">instance</span><span class="p">)</span> <span class="p">{</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">auto</span> <span class="n">finfo</span> <span class="o">=</span> <span class="n">preferredBackend</span><span class="p">();</span></pre></td>
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<a href="https://git.reviewboard.kde.org/r/127387/diff/1/?file=453202#file453202line250" style="color: black; font-weight: bold; text-decoration: underline;">src/backendmanager.cpp</a>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">nitpick: added empty new line</p></pre>
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<p>- Martin Gräßlin</p>
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<p>On March 15th, 2016, 6:57 p.m. CET, Sebastian Kügler wrote:</p>
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<div>Review request for Plasma, Solid, Daniel Vrátil, and Martin Gräßlin.</div>
<div>By Sebastian Kügler.</div>
<p style="color: grey;"><i>Updated March 15, 2016, 6:57 p.m.</i></p>
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<b style="color: #575012; font-size: 10pt;">Repository: </b>
libkscreen
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">Refactor the backend loading code</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;"><div class="codehilite" style="background: #f8f8f8"><pre style="line-height: 125%">Untangle the large plugin loading logic in the BackendManager static
into separate bits. This makes the code clearer and easier to auto-test.
- listBackends() compiles a list of backends from the plugin paths
- preferredBackend() picks the backend, in this priority:
- if KSCREEN_BACKEND is set in the environment, this is the only
used method to find the backend plugin
- if platform is X11, the XRandR backend is picked
- if platform is wayland, KWayland backend is picked
- if neither is the case, QScreen backend is picked
It does introduce a slight behavioral change: The mechanism was based on
falling through, so it would consider another backend if the logically
picked on fails to load. This is undesired behavior, however, since the
backendloader may be able to load the plugin, but that doesn't mean that
the plugin actually work.
Parsing of the KSCREEN_BACKEND variable is kept case-insensitive.
autotests for new backend loading logic
- makes sure we find plugins installed
- pick plugins from env var
We can't sensible test all the runtime cases yet, but this at least
covers the code paths around those few lines that do runtime detection
of x11 and wayland.
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">manual runtime tests and autotests pass</p></pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>autotests/CMakeLists.txt <span style="color: grey">(26c7952)</span></li>
<li>autotests/testbackendloader.cpp <span style="color: grey">(PRE-CREATION)</span></li>
<li>src/backendmanager.cpp <span style="color: grey">(382ae71)</span></li>
<li>src/backendmanager_p.h <span style="color: grey">(150883b)</span></li>
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<p><a href="https://git.reviewboard.kde.org/r/127387/diff/" style="margin-left: 3em;">View Diff</a></p>
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