Canvas UI Builder

name: canvas-ui-builder description: Build PySide6 canvas UI components with the theme system and signal/slot rules. Use when: editing dialogs, panels, widgets, styles, or canvas UI behavior.

Canvas UI Builder

Follow the theme system, slot rules, and panel coordination patterns for all UI work.

Start Here

• docs/agent/ui-theme.md
• docs/agent/ui-signal-slot.md
• .brain/docs/ui-standards.md
• .brain/docs/widget-rules.md

Core Rules (Non-Negotiable)

• Use theme tokens (THEME_V2, TOKENS_V2) for colors, spacing, typography, and radii.
• No hardcoded hex colors.
• All Qt slots must use @Slot(...); no lambdas in signal connections.
• Use DialogStyles helpers for dialogs.
• Prefer SignalCoordinator and PanelManager for wiring.

Minimal Slot Pattern

from PySide6.QtCore import Slot

@Slot()
def _on_clicked(self) -> None:
    ...

Common Paths

• UI widgets: src/casare_rpa/presentation/canvas/ui/widgets/
• Dialogs: src/casare_rpa/presentation/canvas/ui/dialogs/
• Panels: src/casare_rpa/presentation/canvas/ui/panels/
• Theme system: src/casare_rpa/presentation/canvas/theme/

Tests

• UI tests: tests/presentation/canvas/