Uninstall it!

1. Don’t call updateGeometry() during a size constraintsEvent and don’t call resize.
   If you want to keep the same aspect ratio you may be interested in Applet::setAspectRatioMode( ).
2. If you want to write a new clock widget, you should inherit from libplasmaclock ClockApplet.
3. Don’t do custom things: use default plasma methods and widgets when possible.
   Some useful methods are: Applet::setBusy( ) if your applet is busy, Applet::setConfigurationRequired( ) if user needs to configure the widget, etc…
   Some useful widgets are: Plasma::CheckBox, Plasma::ComboBox, Plasma::LineEdit, Plasma::PushButton, Plasma::RadioButton, etc…
4. Don’t reimplement Applet::showConfigurationInterface, reimplement Applet::createConfigurationInterface instead.
   
void MyApplet:createConfigurationInterface(KConfigDialog *parent)
{
QWidget *widget = new QWidget();
ui.setupUi(widget); //ui is your configuration interface
parent->addPage(widget, i18n("General"), icon());
connect(parent, SIGNAL(applyClicked()), this, SLOT(configAccepted()));
connect(parent, SIGNAL(okClicked()), this, SLOT(configAccepted()));
}

5. Use Plasma::Animator and fast animations (not slower than 150 milliseconds).
6. Use a standard background when possible.
7. Avoid installing custom svg graphics when possible.
8. Load graphics using Plasma::Svg.
9. Don’t forget that the theme may change while your widget is running.
10. paintInterface() might be called before init().

Tags: Development, Plasma

This entry was posted on Friday, January 30th, 2009 at 9:35 pm and is filed under KDE, Planet KDE. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.