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Background Toggler Plugin for QGIS

Description:

First attempt at a QGIS plugin using Plugin Builder. This QGIS plugin allows users to toggle the background colour of the map canvas between different predefined colours. The plugin adds a toolbar button to the QGIS interface, which, when clicked, cycles through a set of predefined background colours for the map canvas.

Features:

  • Adds a toolbar button to toggle the background colour of the map canvas.
  • Allows users to cycle through predefined background colours.
  • Will eventually add a way to set and remove specific colours

Implementation Details:

  • The plugin is implemented using the QGIS plugin framework.
  • It uses PyQt for GUI elements and interactions.
  • The plugin maintains a list of predefined background colours, which users can cycle through using the toolbar button.
  • colours are saved and loaded using QSettings for persistence between QGIS sessions.
  • The plugin includes methods for adding toolbar buttons, updating button icons, setting canvas colours, and handling user interactions.

Usage:

  1. Download a zip of this repo.
  2. In QGIS, go to Plugins > Manage and Install Plugins... > Install from zip
  3. Activate the plugin from the Plugins menu.
  4. A toolbar button labeled "Background Toggler" will appear.
  5. Clicking the button will cycle through predefined background colours (black, white, grey) for the map canvas.

Requirements:

  • QGIS 3.x
  • PyQt5

License:

  • GNU General Public License version 2 or later