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This is an automatically generated e-mail. To reply, visit:
<a href="https://git.reviewboard.kde.org/r/117813/">https://git.reviewboard.kde.org/r/117813/</a>
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<p style="margin-top: 0;">On April 28th, 2014, 11:06 a.m. UTC, <b>Mark Gaiser</b> wrote:</p>
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<a href="https://git.reviewboard.kde.org/r/117813/diff/1/?file=268851#file268851line120" style="color: black; font-weight: bold; text-decoration: underline;">applets/systemtray/plugin/host.cpp</a>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="c1">// connect(m_manager, &Manager::tasksChanged, this, &Host::tasksChanged);</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">QTimer</span><span class="o">::</span><span class="n">singleShot</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="k">this</span><span class="p">,</span> <span class="n">SLOT</span><span class="p">(</span><span class="n">init</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;">just init(); ?
I don't see a reason why you need a single shot timer here.</pre>
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<p>On April 28th, 2014, 11:27 a.m. UTC, <b>Marco Martin</b> wrote:</p>
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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;">this causes the tasks to be loaded after the applet is done, in turn, making the whole workspace ui to load faster (and task icons appearing after when the rest is done) is a little hack that does huge difference in perceived startup speed</pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Sounds like a good (undocumented) reason :)</pre>
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<p style="margin-top: 0;">On April 28th, 2014, 11:06 a.m. UTC, <b>Mark Gaiser</b> wrote:</p>
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<a href="https://git.reviewboard.kde.org/r/117813/diff/1/?file=268852#file268852line61" style="color: black; font-weight: bold; text-decoration: underline;">applets/systemtray/plugin/protocols/plasmoid/plasmoidtask.cpp</a>
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">PlasmoidTask::PlasmoidTask(const QString &packageName, int appletId, Plasma::Containment *cont, QObject *parent)</pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">QMetaObject</span><span class="o">::</span><span class="n">invokeMethod</span><span class="p">(</span><span class="n">m_taskGraphicsObject</span><span class="p">,</span> <span class="s">"init"</span><span class="p">,</span> <span class="n">Qt</span><span class="o">::</span><span class="n">DirectConnection</span><span class="p">);</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">QMetaObject</span><span class="o">::</span><span class="n">invokeMethod</span><span class="p">(</span><span class="n">m_taskGraphicsObject</span><span class="p">,</span> <span class="s">"init"</span><span class="p">,</span> <span class="n">Qt</span><span class="o">::</span><span class="n">DirectConnection</span><span class="p">);</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">qWarning</span><span class="p">()</span><span class="o"><<</span><span class="n">m_taskGraphicsObject</span><span class="o">-></span><span class="n">property</span><span class="p">(</span><span class="s">"compactRepresentationItem"</span><span class="p">);</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">qWarning</span><span class="p">()</span><span class="o"><<</span><span class="n">m_taskGraphicsObject</span><span class="o">-></span><span class="n">property</span><span class="p">(</span><span class="s">"compactRepresentationItem"</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;">Ahh, this is tricky to follow. You are invoking the init function here _and_ earlier on using a singleShot timer if this translates to the Host::init method. If that's the case then i think you might be safe in removing this line and the singleshot and just call init() from the constructor.</pre>
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<p>On April 28th, 2014, 11:27 a.m. UTC, <b>Marco Martin</b> wrote:</p>
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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;">no, it isn't init of Host.
this is the init() of m_taskGraphicsObject, ie the init() of the AppletInterface of the loaded plasmoid (is something that shouldn't even be neded in theory, but preloading the applets seems to avoid some crash scenarios)</pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Right, now it makes sense. Thank you for the clarification.</pre>
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<p style="margin-top: 0;">On April 28th, 2014, 11:06 a.m. UTC, <b>Mark Gaiser</b> wrote:</p>
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<a href="https://git.reviewboard.kde.org/r/117813/diff/1/?file=268854#file268854line99" style="color: black; font-weight: bold; text-decoration: underline;">applets/systemtray/plugin/tasklistmodel.cpp</a>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">beginInsertRows</span><span class="p">(</span><span class="n">QModelIndex</span><span class="p">(),</span> <span class="n">index</span><span class="p">,</span> <span class="n">index</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;">Are you sure this is ok?
For example, if you add one row (and have none) this should translate to:
beginInsertRows(QModelIndex(), 0, 1);
I think you need something like:
int startCount = (rowCount() - 1 >= 0) ? rowCount() : 0;
beginInsertRows(QModelIndex(), startCount, startCount + 1); </pre>
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<p>On April 28th, 2014, 11:13 a.m. UTC, <b>David Edmundson</b> wrote:</p>
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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;">beginInsertRows(QModelIndex(), 0, 1)
is saying you are inserting 2 rows, starting at 0 ending at 1. It's an annoying QAbstractItemModel API.</pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Ok, makes sense now. I'm always confused by the start and end numbers.</pre>
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<p style="margin-top: 0;">On April 28th, 2014, 11:06 a.m. UTC, <b>Mark Gaiser</b> wrote:</p>
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<a href="https://git.reviewboard.kde.org/r/117813/diff/1/?file=268854#file268854line103" style="color: black; font-weight: bold; text-decoration: underline;">applets/systemtray/plugin/tasklistmodel.cpp</a>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">emit</span> <span class="nf">rowCountChanged</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;">Remove, the model will notify QML. No need to do this yourself.</pre>
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<p>On April 28th, 2014, 11:13 a.m. UTC, <b>David Edmundson</b> wrote:</p>
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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;">I have it as a property, so I need to tell Qt the property has changed.
I could do connect(this, SIGNAL("rowsInserted(...), this, SIGNAL(rowCountChanged());
I could do connect(this, SIGNAL("rowsRemoved(...), this, SIGNAL(rowCountChanged());
+ rowsMoved + layoutChanged + modelReset..
so I deemed this easier.</pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">As explained in person. The view will know this so the line can be removed.</pre>
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<p style="margin-top: 0;">On April 28th, 2014, 11:06 a.m. UTC, <b>Mark Gaiser</b> wrote:</p>
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<a href="https://git.reviewboard.kde.org/r/117813/diff/1/?file=268854#file268854line115" style="color: black; font-weight: bold; text-decoration: underline;">applets/systemtray/plugin/tasklistmodel.cpp</a>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">emit</span> <span class="nf">rowCountChanged</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;">Remove, the model will notify QML. No need to do this yourself.</pre>
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<p>On April 28th, 2014, 11:27 a.m. UTC, <b>Marco Martin</b> wrote:</p>
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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;">the model does, but the exported count property needs to be notified by hand</pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">If you keep the property, yes. But there is no need for the property to exist at all because the view knows the model count.</pre>
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<p>- Mark</p>
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<p>On April 27th, 2014, 10:51 p.m. UTC, David Edmundson wrote:</p>
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<div>Review request for Plasma.</div>
<div>By David Edmundson.</div>
<p style="color: grey;"><i>Updated April 27, 2014, 10:51 p.m.</i></p>
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<b style="color: #575012; font-size: 10pt;">Repository: </b>
plasma-workspace
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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;">Port QQmlListProperty to QAbstractListModel.
QQmlListProperty only has a signal that the list has changed.This means when used in a ListView every delegate has to be redone whenever a single item is inserted or removed rather than just moved.
Given TaskDelegate is not the simplest of things this has a performance gain, most noticeably on startup. Also rather than sorting all items after an insert items are inserted in the right place using qLowerBound. Now we have the correct signals we can remove the compression, they won't add anything.
Other commits:
Avoid constructing a QString for comparing, use QLatin1String for == operators.
Remove useless include
Do not construct a map inside a lessThan function
lessThan functions have to be fast.
Also Map -> Hash as we're not using order here.
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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;">Seems to work :)
see branch davidedmundson/faster_systray to test</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>applets/systemtray/package/contents/ui/ExpandedRepresentation.qml <span style="color: grey">(2ef180b)</span></li>
<li>applets/systemtray/package/contents/ui/PlasmoidItem.qml <span style="color: grey">(0eb1687)</span></li>
<li>applets/systemtray/package/contents/ui/StatusNotifierItem.qml <span style="color: grey">(fc889a8)</span></li>
<li>applets/systemtray/package/contents/ui/TaskDelegate.qml <span style="color: grey">(913d8f1)</span></li>
<li>applets/systemtray/package/contents/ui/TaskListDelegate.qml <span style="color: grey">(5501e02)</span></li>
<li>applets/systemtray/plugin/CMakeLists.txt <span style="color: grey">(f6e23b4)</span></li>
<li>applets/systemtray/plugin/host.h <span style="color: grey">(02c5bbe)</span></li>
<li>applets/systemtray/plugin/host.cpp <span style="color: grey">(eafd0b6)</span></li>
<li>applets/systemtray/plugin/protocols/plasmoid/plasmoidtask.cpp <span style="color: grey">(2b846f2)</span></li>
<li>applets/systemtray/plugin/tasklistmodel.h <span style="color: grey">(PRE-CREATION)</span></li>
<li>applets/systemtray/plugin/tasklistmodel.cpp <span style="color: grey">(PRE-CREATION)</span></li>
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<p><a href="https://git.reviewboard.kde.org/r/117813/diff/" style="margin-left: 3em;">View Diff</a></p>
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