Raster engine error 4 mapinfo code#

Pro Tip:В Raise widgetChanged whenever you need to tell the style dock to trigger the apply method. # Read the xml and set it back to the style. We can just connect this to the text changed event and add some logic to the apply method. Now can we 1 UP it and make it live edit? Sure can! The style dock will call apply() whenever we raise the widgetChanged signal. Iface.activeLayer().writeStyle( rootNode, doc, '') # Create the editor and set the xml from the layer. Adding some logic to the _init_ method of the CustomPanel class As an example IвЂ™m going to load the style xml and show it in the panel. If your widget is expensive to create you can create a cache here. Remember, the create method is called any time this new item is selected.

Raster engine error 4 mapinfo code#

Using the above code we will see a new icon on the side panel This createPanel method will be called any time the item is selected in the left panel of the style dock. We also have the createPanel method which just returns the widget, you could also use this method to return different widgets based on layer type if you needed. This must return True if the layer can be supported for the widget, if the layer isnвЂ™t support itвЂ™s not shown in the layer style dock. You can also see we have a supportsLayer() method. Iface.registerMapStylePanelFactory(factory) # make sure you keep a instance of the the factory around # Also make a instance and tell the style dock about it Return CustomPanel(layer, canvas, parent) Return layer.type() = QgsMapLayer.VectorLayerДef createPanel(self, layer, canvas, parent): The factory object looks like this:Д¬lass PanelFactory(QgsLayerStylingPanelFactory): Then we need to create a factory object ( QgsLayerStylingPanelFactory) which will hold the metadata for the panel widget, things like icon, title, and the widget it self as required. Super(CustomPanel, self)._init_(layer, canvas, parent) While building the dock it became evident that being able to add your own panels with be super neat, why lock the user to what styling controls we have built into core.ДЄfter one, or two, API iterations itВ is nowВ possible toВ add your own panelsВ to theВ style dock.ДЇirst we need to make a new widget using QgsLayerStylingPanelДef _init_(self, layer, canvas, parent): In part 1 I talked about the new style dock and the in built functions it has in this post I would like to coverВ how you can extend that dock usingВ plugin panels.