Re: [QGIS-Developer] set data defined override expression with python?
On 16-10-18 04:19, Nyall Dawson wrote: The API uses ints instead of the direct DataDefinedProperty enums, as the enums vary by part of code (there's separate enums for symbology, labelling, layouts, etc) For symbology: layer = QgsSvgMarkerSymbolLayer(...) ... layer.setDataDefinedProperty( QgsSymbolLayer.PropertyName, QgsProperty.fromExpression( " some expression ") ) Nyall Thanks Nyall, that works! And now I know the property name, I could also find the other properties. And then I started searching the code for more and found the ones listed below. Possibly there are more. It was apparently too hard for me finding these property names and I wonder if others are struggling as well. Where could we put this in a way where people can find it and where it will be easily to maintain? The cookbook? Regards, Raymond QgsAbstract3DSymbol PropertyHeight = 0, //!< Height (altitude) PropertyExtrusionHeight, //!< Extrusion height (zero means no extrusion) QgsLayoutObject NoProperty = 0, //!< No property AllProperties, //!< All properties for item TestProperty, //!< Dummy property with no effect on item //composer page properties PresetPaperSize, //!< Preset paper size for composition PaperWidth, //!< Paper width (deprecated) PaperHeight, //!< Paper height (deprecated) NumPages, //!< Number of pages in composition (deprecated) PaperOrientation, //!< Paper orientation //general composer item properties PageNumber, //!< Page number for item placement PositionX, //!< X position on page PositionY, //!< Y position on page ItemWidth, //!< Width of item ItemHeight, //!< Height of item ItemRotation, //!< Rotation of item Transparency, //!< Item transparency (deprecated) Opacity, //!< Item opacity BlendMode, //!< Item blend mode ExcludeFromExports, //!< Exclude item from exports FrameColor, //!< Item frame color BackgroundColor, //!< Item background color //composer map MapRotation, //!< Map rotation MapScale, //!< Map scale MapXMin, //!< Map extent x minimum MapYMin, //!< Map extent y minimum MapXMax, //!< Map extent x maximum MapYMax, //!< Map extent y maximum MapAtlasMargin, //!< Map atlas margin MapLayers, //!< Map layer set MapStylePreset, //!< Layer and style map theme //composer picture PictureSource, //!< Picture source url PictureSvgBackgroundColor, //!< SVG background color PictureSvgStrokeColor, //!< SVG stroke color PictureSvgStrokeWidth, //!< SVG stroke width //html item SourceUrl, //!< Html source url //legend item LegendTitle, //!< Legend title LegendColumnCount, //!< Legend column count //scalebar item ScalebarFillColor, //!< Scalebar fill color ScalebarFillColor2, //!< Scalebar secondary fill color ScalebarLineColor, //!< Scalebar line color ScalebarLineWidth, //!< Scalebar line width, //table item AttributeTableSourceLayer, //!< Attribute table source layer QgsDiagramLayerSettings BackgroundColor, //!< Diagram background color StrokeColor, //!< Stroke color StrokeWidth, //!< Stroke width PositionX, //! x-coordinate data defined diagram position PositionY, //! y-coordinate data defined diagram position Distance, //! Distance to diagram from feature Priority, //! Diagram priority (between 0 and 10) ZIndex, //! Z-index for diagram ordering IsObstacle, //! Whether diagram features act as obstacles for other diagrams/labels Show, //! Whether to show the diagram AlwaysShow, //! Whether the diagram should always be shown, even if it overlaps other diagrams/labels StartAngle, //! Angle offset for pie diagram QgsPalLayerSettings Size = 0, //!< Label size Bold = 1, //!< Use bold style Italic = 2, //!< Use italic style Underline = 3, //!< Use underline Color = 4, //!< Text color Strikeout = 5, //!< Use strikeout Family = 6, //!< Font family FontStyle = 21, //!< Font style name FontSizeUnit = 22, //!< Font size units FontTransp = 18, //!< Text transparency (deprecated) FontOpacity = 92, //!< Text opacity FontCase = 27, //!< Label text case FontLetterSpacing = 28, //!< Letter spacing FontWordSpacing = 29, //!< Word spacing FontBlendMode = 30, //! Text blend mode // text formatting MultiLineWrapChar = 31, AutoWrapLength = 101, MultiLineHeight = 32, MultiLineAlignment = 33, DirSymbDraw = 34, DirSymbLeft = 35, DirSymbRight = 36, DirSymbPlacement = 37, DirSymbReverse = 38, NumFormat = 39, NumDecimals = 40, NumPlusSign = 41, // text buffer BufferDraw = 42, BufferSize = 7, BufferUnit = 43, BufferColor = 8, BufferTransp
Re: [QGIS-Developer] set data defined override expression with python?
On Tue, 16 Oct 2018 at 05:06, Raymond Nijssen wrote: > > So now I'd like to set another expression, quite similar, but this time > the svg-path to a QgsSvgMarkerSymbolLayer. > > Where can I find the name of that property? I found the > QgsLayoutObject.PictureSource here: > > https://github.com/qgis/QGIS/blob/c89a542365eb46317468135cb33236ecc0c3768c/src/core/layout/qgslayoutobject.h#L47 > > But I don't know what class should hold the data defined property > enumeration for an svgMarkerSymbolLayer. Searching for "enum > DataDefinedProperty" in the qgis code doesn't get me any other result. The API uses ints instead of the direct DataDefinedProperty enums, as the enums vary by part of code (there's separate enums for symbology, labelling, layouts, etc) For symbology: layer = QgsSvgMarkerSymbolLayer(...) ... layer.setDataDefinedProperty( QgsSymbolLayer.PropertyName, QgsProperty.fromExpression( " some expression ") ) Nyall > > Hope anyone can help me out here! > > Kind regards, > Raymond > > > > On 22-08-18 08:39, Raymond Nijssen wrote: > > Thank you Nyall! Does exactly what I need. Will add it to the python > > cookbook. > > > > Raymond > > > > > > > > On 22-08-18 00:10, Nyall Dawson wrote: > >> On Wed, 22 Aug 2018 at 01:41, Raymond Nijssen > >> wrote: > >>> > >>> Hi devs! > >>> > >>> I'd like my python plugin to set an expression for overriding a property > >>> and I have no clue how to do so. I expect there must be some generic way > >>> to set expressions. > >>> > >>> Specifically, I want to set the expression for the "Image source" of a > >>> QgsLayoutItemPicture to: > >>> > >>> '/path/to/pictures/' || attribute(@atlas_feature, 'ID') || '.svg' > >>> > >> > >> Try > >> > >> property = QgsProperty.fromExpression( "'/path/to/pictures/' || > >> attribute(@atlas_feature, 'ID') || '.svg'") > >> > >> item.dataDefinedProperties().setProperty(QgsLayoutObject.PictureSource, > >> property) > >> > >> Nyall > >> > > > > > > ___ > > QGIS-Developer mailing list > > QGIS-Developer@lists.osgeo.org > > List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer > > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer > > ___ > QGIS-Developer mailing list > QGIS-Developer@lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer ___ QGIS-Developer mailing list QGIS-Developer@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer
Re: [QGIS-Developer] set data defined override expression with python?
So now I'd like to set another expression, quite similar, but this time the svg-path to a QgsSvgMarkerSymbolLayer. Where can I find the name of that property? I found the QgsLayoutObject.PictureSource here: https://github.com/qgis/QGIS/blob/c89a542365eb46317468135cb33236ecc0c3768c/src/core/layout/qgslayoutobject.h#L47 But I don't know what class should hold the data defined property enumeration for an svgMarkerSymbolLayer. Searching for "enum DataDefinedProperty" in the qgis code doesn't get me any other result. Hope anyone can help me out here! Kind regards, Raymond On 22-08-18 08:39, Raymond Nijssen wrote: Thank you Nyall! Does exactly what I need. Will add it to the python cookbook. Raymond On 22-08-18 00:10, Nyall Dawson wrote: On Wed, 22 Aug 2018 at 01:41, Raymond Nijssen wrote: Hi devs! I'd like my python plugin to set an expression for overriding a property and I have no clue how to do so. I expect there must be some generic way to set expressions. Specifically, I want to set the expression for the "Image source" of a QgsLayoutItemPicture to: '/path/to/pictures/' || attribute(@atlas_feature, 'ID') || '.svg' Try property = QgsProperty.fromExpression( "'/path/to/pictures/' || attribute(@atlas_feature, 'ID') || '.svg'") item.dataDefinedProperties().setProperty(QgsLayoutObject.PictureSource, property) Nyall ___ QGIS-Developer mailing list QGIS-Developer@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer ___ QGIS-Developer mailing list QGIS-Developer@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer
Re: [QGIS-Developer] set data defined override expression with python?
Thank you Nyall! Does exactly what I need. Will add it to the python cookbook. Raymond On 22-08-18 00:10, Nyall Dawson wrote: On Wed, 22 Aug 2018 at 01:41, Raymond Nijssen wrote: Hi devs! I'd like my python plugin to set an expression for overriding a property and I have no clue how to do so. I expect there must be some generic way to set expressions. Specifically, I want to set the expression for the "Image source" of a QgsLayoutItemPicture to: '/path/to/pictures/' || attribute(@atlas_feature, 'ID') || '.svg' Try property = QgsProperty.fromExpression( "'/path/to/pictures/' || attribute(@atlas_feature, 'ID') || '.svg'") item.dataDefinedProperties().setProperty(QgsLayoutObject.PictureSource, property) Nyall ___ QGIS-Developer mailing list QGIS-Developer@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer
Re: [QGIS-Developer] set data defined override expression with python?
On Wed, 22 Aug 2018 at 01:41, Raymond Nijssen wrote: > > Hi devs! > > I'd like my python plugin to set an expression for overriding a property > and I have no clue how to do so. I expect there must be some generic way > to set expressions. > > Specifically, I want to set the expression for the "Image source" of a > QgsLayoutItemPicture to: > > '/path/to/pictures/' || attribute(@atlas_feature, 'ID') || '.svg' > Try property = QgsProperty.fromExpression( "'/path/to/pictures/' || attribute(@atlas_feature, 'ID') || '.svg'") item.dataDefinedProperties().setProperty(QgsLayoutObject.PictureSource, property) Nyall ___ QGIS-Developer mailing list QGIS-Developer@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer
