api:dk11:activex:tatukgis_xdk11.itgis_layer
Table of Contents
ITGIS_Layer interface
DK for ActiveX | TatukGIS_XDK11.ITGIS_Layer | Interfaces | Methods | Properties
General layer class. Must be derived to provide file access.
Syntax
// C# public interface ITGIS_Layer: ITGIS_LayerAbstract { }
' VisualBasic Public Interface ITGIS_Layer Implements ITGIS_LayerAbstract End Class
// Oxygene type ITGIS_Layer = public interface( ITGIS_LayerAbstract ) end;
Implements
Methods
Inherited
Overrides
Protected
Private
| Name | Visibility | Description | |
|---|---|---|---|
| Alive | public | Makes a layer non-dormant. | |
| ApplyAutoStyle | public | Applies auto-styling to the layer. | |
| ApplyAutoStyle_2 | public | Applies auto-styling to the layer. | |
| ApplyCuttingPolygon | public | Sets a clipping polygon for the layer. | |
| AttachDelphiObj | public | Only for internal use of TatukGIS. (Inherited from ITBaseObject) |
|
| ChangeHash | public | Changes the hash used to verify layer modifications. | |
| ClearModified | public | Sets IsModified flag to false for a layer and its sublayers. | |
| Create_2 | public | Creates a layer and sets the Path property. | |
| DelphiObj | public | Only for internal use of TatukGIS. (Inherited from ITBaseObject) |
|
| Dormant | public | Makes a layer dormant. | |
| DormantGain | public | Calculates the approximate memory gain in megabytes that can be achieved by calling Dormant. | |
| Draw | public | Draws a layer. | |
| DrawEx | public | Draws a layer within a defined extent. | |
| DrawFlash | public | Draws a flash. | |
| DrawSelected | public | Draws only the selected item(s) on layer. | |
| DrawSelectedEx | public | Draws only the selected item(s) on layer that are within a defined extent. | |
| ForEachSubLayer | public | Calls the callback for the layer and all of its sublayers. | |
| GetAvailableLayers | public | Gets a list of layers available in storage. | |
| GetSubLayer | public | Retrieves the layer identified by name. | |
| HourglassShake | public | Notifies about a busy state using an hourglass. | |
| IsGrid | public | Checks if the layer type is grid. | |
| IsPixel | public | Checks if the layer type is pixel. | |
| IsSupported | public | Checks if the operation is supported by the layer. | |
| IsTopology | public | Checks if the layer type is topology. | |
| IsVector | public | Checks if the layer type is vector. | |
| IsVector3D | public | Checks if the layer type is vector 3D. | |
| IsVisible | public | Checks if the layer is visible in a defined extent and current params. | |
| Lock | public | Locks the layer for burst-mode operation. | |
| MarkModified | public | Sets IsModified flag to true for a layer and its sublayers. | |
| Move | public | Moves a layer up or down in the viewer zorder list. | |
| MoveEx | public | Moves a layer up or down in the viewer zorder list (only visible layers). | |
| MustCalculateStatistics | public | Verifies whether all statistics required to render the layer are available. | |
| MustReproject | public | Checks whether the layer must be reprojected. | |
| MustSave | public | Checks whether the layer was modified by editing. | |
| Open | public | Opens the layer. | |
| Paint | public | Draws the layer or fires PaintLayer event (if defined). | |
| Prepare | public | Opens the layer for non-drawing operations. | |
| PreRecognize | public | Checks if the layer can read the file. | |
| Project | public | Applies a projection on the single point. | |
| Project3D | public | Applies a projection on the single point in 3D. | |
| Project3D_Ref | public | Applies projection to a single 3D point. | |
| ProjectExtent | public | Applies a projection on the extent. | |
| Project_Ref | public | Applies projection to a single point. | |
| RaiseBusyEvent | public | Fires Busy event of the layer. | |
| RaiseBusyPrepare | public | Fires BusyPrepare method of the assigned viewer. | |
| RaiseBusyRelease | public | Fires BusyRelease method of the assigned viewer. | |
| RaiseBusyShake | public | Fires BusyShake method of the assigned viewer. | |
| ReadConfig | public | Reads the layer configuration files. | |
| ReadConfigParam | public | Reads a layer configuration parameter. | |
| RecalcExtent | public | Recalculates the layer extent. | |
| RecalcProjectedExtent | public | Recalculates the projected extent. | |
| ReOpen | public | Reopens the layer. | |
| RereadConfig | public | Rereads the layer configuration files. | |
| RevertAll | public | Reverts layer to its original content. | |
| RootLayer | public | Returns the absolute parent layer. | |
| SaveAll | public | Saves the layer and destroys mirrored items. | |
| SaveData | public | Saves layer and destroys mirrored items. | |
| SetCSByEPSG | public | Sets the coordinate system using an EPSG code. | |
| SetCSByWKT | public | Sets the coordinate system from a WKT (Well-Known Text) string containing a GEOGCS or PROJCS definition. | |
| SetCSByWKTFile | public | Sets the coordinate system from a file containing a WKT (Well-Known Text) string, such as a Shapefile .PRJ file. | |
| Unlock | public | Unlocks the layer from burst-mode operation. | |
| Unproject | public | Applies reverse projection (recovers from the projection) on the single point. | |
| Unproject3D | public | Applies reverse projection to a single 3D point. | |
| Unproject3D_Ref | public | Applies reverse projection to a single 3D point. | |
| UnprojectExtent | public | Applies reverse projection (recovers from the projection) on the extent. | |
| Unproject_Ref | public | Applies reverse projection to a single point. | |
| ViewerReParent | public | Sets the viewer for the layer and its sublayers. | |
| WriteConfig | public | Writes the layer configuration files. | |
Properties
Inherited
Protected
Private
| Name | Visibility | Description | |
|---|---|---|---|
| Active | public | True if the layer is visible and can be localized. | |
| Addition | public | Additional blending value. | |
| Age | public | Time elapsed since the layer was created. | |
| Basemap | public | True if the layer must be treated as a basemap for background painting. | |
| BasemapDraw | public | True if the layer is currently being drawn in a basemap thread. | |
| CachedPaint | public | False if the layer must be painted directly, bypassing the cache. | |
| Caption | public | Layer caption; if not assigned directly, it will be filled with Name when the layer is added to the viewer. | |
| CodePage | public | Code page used to store text. | |
| Collapsed | public | True if the layer is collapsed in the legend, meaning only the layer title is visible. | |
| Comments | public | Additional user comments. | |
| ConfigFile | public | Configuration file handle. | |
| ConfigName | public | Configuration file name. | |
| CS | public | Coordinate Reference System (CRS) assigned to the layer. | |
| CustomData | public | List of custom, user-defined data saved to and restored from config and project files. | |
| DirectMode | public | True if the layer is direct-mode (bypassing cache). | |
| DormantMode | public | Memory-management mode for the layer. | |
| Driver | public | The layer's driver name. | |
| Extent | public | Extent of the layer. | |
| Extent3D | public | Three-dimensional extent of the layer. | |
| FileCopyrights | public | Copyright information about the layer. | |
| FileInfo | public | Additional textual information about the layer such as compression, number of pixels, copyright, etc. | |
| GUID | public | Unique layer identifier. | |
| HideFromLegend | public | False if the layer should not be visible in the legend. | |
| Icon | public | Layer icon presented in the legend. | |
| InPaint | public | True while the layer is being painted. | |
| IsExportable | public | True if the layer is exportable. | |
| IsLocked | public | True if the layer is in locked state. | |
| IsModified | public | True if structure (field, geometry etc) was modified. | |
| IsOpened | public | True if the layer is opened and is ready for operations. | |
| IsPersistent | public | True if the layer is persistent. | |
| IsReadOnly | public | True if the layer is read-only. | |
| IsTopmost | public | True if the layer can be interpreted as the topmost (trackable) layer. | |
| Layer3D | public | Mode of 3D layer operations. | |
| MaxTileSize | public | Maximum allowed tile size for the layer. | |
| MultiUserMode | public | Multiuser access mode for the layer. | |
| Name | public | Layer name. | |
| OverlappedExtentMargin | public | Overlap margin applied to the layer extent. | |
| ParamsList | public | List of all parameter sections attached to the current layer. | |
| Params_ | public | Parameters (colors, fills, etc.) object. | |
| ParentLayer | public | Parent layer of a sublayer. | |
| Path | public | Path to file holding the layer's data. | |
| PathWithDriver | public | Path to file with the layer's data extended with driver name. | |
| ProjectedExtent | public | Extent of the layer in projected units. | |
| Renderer | public | Handle to a renderer used for drawing shapes. | |
| Statistics | public | Layer statistics engine. | |
| Stream | public | Stream providing layer data as an alternative to reading from the file specified by Path. | |
| SubLayers | public | List of sublayers belonging to the layer. | |
| SubType | public | Subtype flags describing the layer role within a layer hierarchy. | |
| SupportsAsync | public | Indicates whether the layer implements asynchronous operations. | |
| SupportsAutoStyle | public | Indicates whether the layer supports auto styling. | |
| SupportsTiledPaint | public | Indicates whether the layer supports tiled paint. | |
| Tag | public | Tag has no predefined meaning. | |
| TagInternal | public | TagInternal has no predefined meaning. | |
| TagPointer | public | TagPointer has no predefined meaning. | |
| Tileable | public | True if the layer is currently being printed or exported using tiles. | |
| TiledDrawMode | public | Indicates whether the layer is currently being drawn by the tiler. | |
| Transform | public | Custom coordinate transformation applied to the layer. | |
| Transparency | public | Transparency value for the layer (0..100). | |
| UnSupportedOperations | public | Set of operations not supported by the layer. | |
| UseConfig | public | True if the configuration file is active. | |
| UserObject | public | Associates a user-defined object with the layer. | |
| Viewer | public | Reference to the viewer that owns or displays this layer. | |
| ZOrder | public | Layer position relative to all other layers. | |
| ZOrderEx | public | Layer position relative to other visible layers. | |
Remarks
PURPOSE: Provides the abstract base implementation for GIS layers, including lifecycle management, rendering support, coordinate-system handling, configuration, and sublayer hierarchy.
BEHAVIOR: The class manages common layer state such as path, viewer association, extents, styling parameters, locking, dormant mode, and modification tracking. Descendants implement the actual data access and format-specific behavior.
CONSTRAINTS: This class is abstract and cannot provide file access on its own. Use a supported descendant class for a concrete layer implementation.
2026/07/11 00:11