Utils.py¶

Overview¶

This file contains 6 documented elements.

Classes¶

ClickTool¶

No description available. A custom QGIS map tool that extends QgsMapTool to capture single mouse-click events on the map canvas. When the mouse button is released, it transforms the clicked screen position into map coordinates and passes the resulting point to a user-supplied callback function. The tool is initialized with a QGIS interface instance and a callback, which is invoked with the map point on each canvas release event.

Inherits from: QgsMapTool

Methods¶

init(self, iface, callback)¶

No description available. Initializes a ClickTool instance by calling the parent QgsMapTool constructor with the map canvas obtained from iface. Stores references to iface, the provided callback callable, and the map canvas as instance attributes. Returns None.

canvasReleaseEvent(self, e)¶

No description available. Handles a mouse button release event on the map canvas. Transforms the screen coordinates of the release position into map coordinates using the canvas's coordinate transform, then passes the resulting map point to the registered callback function. Returns None.

Functions¶

pointToWGS84(point, crs)¶

crs is the renderer crs

Parameters: - point - crs

pointFromWGS84(point, crs)¶

No description available. Transforms a point from WGS84 (EPSG:4326) into the specified target coordinate reference system (crs). It constructs a QgsCoordinateTransform from a source CRS defined by SRID 4326 to the provided target CRS, falling back to a project-instance-aware constructor if the first attempt fails. The transformed point is returned, with an additional fallback that wraps the input in QgsPointXY if the initial transform call raises an exception.

Parameters: - point - crs