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# High-Level Architectural Plan: Graphical UI & Palette Polish Phase
## Objective
To overhaul the `SandboxStage` user interface into a polished, kid-friendly graphical experience, while establishing a flexible, schema-driven theme system that seamlessly supports present UI elements and future feature additions (such as dynamic speech bubble styling, sound customization, and extended rule editors).
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## 1. Centralized Theme & Resource Infrastructure
### 1.1 JSON Theme Schema Expansion (`sandbox_theme.json`)
- **Unified Theme Specification**: Expand the `sandbox_theme.json` contract to serve as the single source of truth for typography, spatial grids, mode accent colors, and component-specific visual presets.
- **Subsystem Category Blocks**: Structure the schema into modular sub-dictionaries (e.g., `fonts`, `mode_colors`, `grid`, `popups`, `speech_bubbles`).
- **Graceful Fallback Pipeline**:
1. Specific component override value.
2. Subsystem block default (e.g., `speech_bubbles.style_defaults`).
3. Global theme default (`fonts.ui_font`).
4. System fallback (`ThemeDB.fallback_font`).
- **Resource Preloading & Validation**: Ensure the theme loader validates paths, gracefully handles missing assets with non-blocking warnings, and caches loaded `Font` and `StyleBox` objects.
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## 2. Graphical Stage Chrome & Mode Navigation
### 2.1 Mode Switcher & Viewport Frame
- **3-Segment Graphical Switcher**: Replace standard text toggles with a stylized 3-segment mode control (`[✏️ Edit | 🎬 Direct | ▶️ Play]`).
- **Viewport Frame Accent**: Render a screen-constant border frame (`_mode_frame`) around the viewport that dynamically tints according to the active mode accent color.
- **Mode Badge Pill**: Maintain a rounded, high-contrast status badge in the viewport corner displaying the active state with mode-specific icons and accent backgrounds.
### 2.2 Status Bar & Dynamic Cursor System
- **Status & Coordinate Bar**: Polish the bottom bar for scannability, hosting contextual operational hints and live spatial coordinates.
- **Contextual Cursors & Floating Tooltips**:
- Swap between arrow/crosshair, placement cursors, and custom action reticles depending on mode and pending operations.
- Attach floating, high-contrast tooltip pills offset from the cursor during target selection workflows (e.g., direct mode commands or trigger mapping).
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## 3. Icon-Based Palette & Thumbnail Engine
### 3.1 Draggable / Clickable Card Palette
- **Visual Asset Cards**: Transition spawner controls from text buttons to visual card tiles displaying item icons, labels, and category badges.
- **Placement Integration**: Support both click-to-select active placement and direct drag-and-drop actions onto the stage.
### 3.2 Modal Asset Selector & Thumbnail Pipeline
- **Asset Selector Modal**: Refine the modal popup and its dimming background backdrop for browsing extended stickmen and prop libraries.
- **Asynchronous Thumbnail Cache**:
- Streamline off-screen thumbnail generation for custom props and stickmen.
- Cache generated preview textures to prevent UI stuttering during library scans.
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## 4. Visual Overlay & Placement Feedback Engine
### 4.1 Terrain Drag-Painting & Ghosting Feedback
- **Block-Unit Stride Alignment**: Align placement ghosts and Bresenham line painting to the active terrain template's AABB extent.
- **3-State Ghost Tinting**:
- **Green**: Valid, empty space ready for placement.
- **Faint / Neutral**: Same-type block (skipped to avoid double-stamping).
- **Red**: Conflicting entity or invalid geometry.
### 4.2 Guidance & Target Trajectories
- **Axis-Aligned Guides**: Render high-contrast dashed lines along cardinal axes during Shift-locked terrain drags.
- **Rubber-Band Trajectories**: Draw contextual connection lines and target reticles from character origins to mouse targets during Direct mode actions.
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## 5. Reusable Control Widgets & Forward-Compatible Systems
### 5.1 Standardized Kid-Friendly UI Components
Develop a suite of reusable, theme-aware control widgets that can be embedded across dialogs, action popups, and future parameter editors:
- **Color Swatch Selector**: Clickable circle palettes populated from theme swatch arrays or editor history.
- **Preset Size Toggles**: Segmented buttons for coarse adjustments (e.g., **Small**, **Medium**, **HUGE**) mapping to backend integer/scale metrics.
- **Preset Style / Font Pickers**: Visual icon or text buttons allowing selection between preset fonts (e.g., Standard, Comic, Pixel, Scary).
- **Emoji Quick Grid**: A dedicated grid widget for inserting expressive graphics directly into text fields.
### 5.2 Context Menus & Action Popups
- **Uniform Popup Styling**: Apply standardized theme rules, font sizes, and emoji scaling across action context menus, trigger submenus, and dialogs.
- **Clean Action Dialogs**: Align text input (Speak), duration (Wait), and rename popups with dark-mode sandbox styling.
### 5.3 Extension Blueprint: Speech Bubble Customization System
Architect the theme and component pipeline so that future speech bubble upgrades plug directly into the visual foundation without refactoring:
- **Data Contract**: Ensure the `speak` action payload accepts visual parameters (`font_preset`, `size_preset`, `color`, `bubble_style`) alongside text.
- **Style Engine Integration**: Speech bubble nodes consume geometry styles (Standard, Yell, Thought, Whisper) and theme font presets directly from `sandbox_theme.json`.
- **UI Reusability**: The standard Color Swatch, Size Toggle, Font Picker, and Emoji Grid widgets drop directly into the Direct mode `Speak` parameter dialog.
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## Recommended Execution Sequence
1. **Phase 1: Theme Engine & Core Schema**: Extend `sandbox_theme.json` schema, build centralized theme loading/fallback pipeline, and integrate theme application hooks across stage UI.
2. **Phase 2: Chrome & Mode Navigation Polish**: Implement the 3-segment mode control, viewport frame accents, status badges, and cursor/tooltip overlay controllers.
3. **Phase 3: Reusable UI Component Library**: Build the Color Swatch, Size Toggle, Font Picker, and Emoji Grid widgets.
4. **Phase 4: Graphical Palette & Modal Overhaul**: Implement icon-based asset cards, refine the `AssetSelector` modal, and optimize asynchronous thumbnail caching.
5. **Phase 5: Context Menus & Overlay Polish**: Update action popups with uniform theme sizing and polish drag-painting ghost/guide overlays.