pos_ui_optimization/README.md

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# POS UI Optimization
**Odoo 19 | Custom Addon**
Optimizes the Point of Sale UI for resource-constrained devices and adds a **switchable portrait display mode** designed for 6-inch touchscreen terminals.
---
## Features
### 1. Incremental Product Rendering
Prevents low-RAM devices from freezing when the product catalogue is large.
- Only **40 products** are rendered on initial load
- More products load automatically as the user scrolls down
- Resets the counter when the search word or category changes
### 2. Incremental Order Line Rendering
Same approach for the order/cart display.
- Only **20 order lines** rendered initially
- Scrolling loads more lines progressively
- Ensures the selected line is always visible (expands count if needed)
### 3. Portrait Mode (6-inch Display)
A dedicated compact layout for portrait-orientation small screens. Designed for devices like 6-inch Android POS terminals where the standard Odoo two-column layout clutters the screen.
#### Layout
```
┌──────────────────────────────┐
│ Navbar (compact) │
├──────────────────────────────┤
│ │
│ Active tab pane: │
│ Products / Cart / Numpad │
│ │
├──────────────────────────────┤
│ TOTAL: Rp X,XXX [Send][Pay]│ ← always visible
├──────────────────────────────┤
│ [Products] [Cart] [Numpad]│ ← bottom tab bar
└──────────────────────────────┘
```
#### Key Differences from Standard Mode
| Feature | Standard | Portrait |
|---|---|---|
| Layout | Two-column (order left, products right) | Single pane with bottom tabs |
| Product grid | `auto-fill minmax(115px)` | Fixed 2 columns |
| Product images | Full aspect ratio | Capped at 90px height |
| Numpad | Shown inline in left pane | Dedicated "Numpad" tab |
| Pay/Send | Inside left pane action pad | Always-visible bottom strip |
| Navbar | Full labels | Compact with smaller padding |
#### Auto-Activation
Portrait mode **auto-activates** when the browser viewport width is **< 400 px** on first load. A manual override is always available via the burger menu (☰ Switch to Portrait/Standard Mode). The choice is saved to `localStorage`.
#### Send Button Behavior
The **Send** button appears only when:
1. The POS is in restaurant mode (`module_pos_restaurant = True`)
2. At least one **Preparation Category** is configured in POS Kitchen Printers settings
3. The current order has unsent changes (`nbrOfChanges > 0`)
4. The order is not a direct sale / refund
This mirrors Odoo's standard restaurant `swapButton` logic exactly.
---
## Installation
1. Copy the `pos_ui_optimization` folder into your `customaddons` directory
2. Restart the Odoo server
3. Go to **Apps** → search for **POS UI Optimization** → Install
4. Reload your POS session
## Upgrade
```bash
./odoo-bin -u pos_ui_optimization -d <your_database>
```
---
## Compatibility
| Item | Value |
|---|---|
| Odoo version | 19.0 |
| Depends on | `point_of_sale` |
| Compatible with | `pos_restaurant`, `pos_custom_access`, `pos_kitchen_printer` |
| License | LGPL-3 |
---
## File Structure
```
pos_ui_optimization/
├── __manifest__.py
├── README.md
├── static/
│ └── src/
│ ├── app/
│ │ ├── components/
│ │ │ ├── navbar/
│ │ │ │ ├── navbar_patch.js # Display Mode toggle in burger menu
│ │ │ │ └── navbar_patch.xml
│ │ │ └── order_display/
│ │ │ ├── order_display_patch.js # Incremental order line rendering
│ │ │ └── order_display_patch.xml
│ │ ├── screens/
│ │ │ └── product_screen/
│ │ │ ├── portrait_mode_patch.js # Tab state (products/cart/numpad)
│ │ │ ├── portrait_screen.xml # Portrait layout XML patch
│ │ │ ├── product_screen_patch.js # Incremental product rendering
│ │ │ └── product_screen_patch.xml
│ │ └── services/
│ │ └── portrait_mode.js # Auto-detect + localStorage service
│ └── scss/
│ └── portrait.scss # All portrait CSS (scoped to .pos-portrait)
```
---
## Author
**Suherdy Yacob**