Introduces a new MaskTool for interactive mask drawing with adjustable brush size, strength, and softness. Updates Canvas.js to integrate mask editing, rendering, and saving, including support for saving images with and without masks. Enhances the UI in Canvas_view.js with mask controls and a dialog for canvas resizing. Updates canvas_node.py to load images without masks for processing. These changes improve user control over mask creation and management in the canvas workflow.
Added getStateSignature to compare layer states by serializing relevant properties, avoiding issues with image object references. Refactored mirrorHorizontal and mirrorVertical to be async and await all image updates before rendering and saving state, ensuring consistency and preventing race conditions.
Simplifies and corrects the logic for maintaining the original aspect ratio when resizing objects with the Shift key pressed. Ensures consistent behavior regardless of handle or direction.
Added calls to saveState() after scaling, rotating, and removing layers to ensure changes are properly recorded in the undo/redo history. Also refactored the matting button UI for better layout and ensured saveState is called after matting results are applied.
Replaced localStorage usage in Canvas.js with asynchronous IndexedDB operations for saving, loading, and removing canvas state. Added a new db.js module to handle IndexedDB interactions, improving scalability and reliability of state persistence.
Introduces methods to save and load canvas state to localStorage, enabling persistence across sessions. Refactors image loading for drag-and-drop, file input, and clipboard paste to use FileReader and data:URL, improving compatibility and reliability. Updates layer addition to consistently update selection and save state. Calls loadInitialState on widget creation to restore previous state if available.
Implemented undo and redo history stacks in Canvas.js, including keyboard shortcuts (Ctrl+Z, Ctrl+Y/Shift+Z), and state saving on relevant actions. Added Undo and Redo buttons to the UI in Canvas_view.js, with dynamic enable/disable based on history state.
