> ## Documentation Index
> Fetch the complete documentation index at: https://mintlify.com/mrkai77/loop/llms.txt
> Use this file to discover all available pages before exploring further.
# Halves & Quarters Positioning
> Split-screen window positioning in halves and quarter sections
## Overview
Halves and quarters provide the most common split-screen window positioning patterns. These actions position windows in exact fractions of the available screen space.
## Halves
Defined in the static `halves` array (line 76):
```swift theme={null}
static var halves: [WindowDirection] {
[.topHalf, .verticalCenterHalf, .bottomHalf,
.leftHalf, .horizontalCenterHalf, .rightHalf]
}
```
### Edge Halves
Positions window on the left half of the screen.
**Raw Value:** `"LeftHalf"`
**URL Scheme:** `loop://LeftHalf`
**Frame Values:** `CGRect(x: 0, y: 0, width: 0.5, height: 1.0)` (line 118)
**Visual:**
```
┌─────────┬─────────┐
│ │ │
│ Window │ │
│ 50% │ │
│ │ │
└─────────┴─────────┘
```
Positions window on the right half of the screen.
**Raw Value:** `"RightHalf"`
**URL Scheme:** `loop://RightHalf`
**Frame Values:** `CGRect(x: 0.5, y: 0, width: 0.5, height: 1.0)` (line 116)
**Visual:**
```
┌─────────┬─────────┐
│ │ │
│ │ Window │
│ │ 50% │
│ │ │
└─────────┴─────────┘
```
Positions window on the top half of the screen.
**Raw Value:** `"TopHalf"`
**URL Scheme:** `loop://TopHalf`
**Frame Values:** `CGRect(x: 0, y: 0, width: 1.0, height: 0.5)` (line 115)
**Visual:**
```
┌───────────────────┐
│ Window 50% │
├───────────────────┤
│ │
└───────────────────┘
```
Positions window on the bottom half of the screen.
**Raw Value:** `"BottomHalf"`
**URL Scheme:** `loop://BottomHalf`
**Frame Values:** `CGRect(x: 0, y: 0.5, width: 1.0, height: 0.5)` (line 117)
**Visual:**
```
┌───────────────────┐
│ │
├───────────────────┤
│ Window 50% │
└───────────────────┘
```
### Center Halves
Positions window in the horizontal center, 50% width.
**Raw Value:** `"HorizontalCenterHalf"`
**URL Scheme:** `loop://HorizontalCenterHalf`
**Frame Values:** `CGRect(x: 0.25, y: 0, width: 0.5, height: 1.0)` (line 119)
**Visual:**
```
┌────┬──────────┬────┐
│ │ │ │
│25% │ Window │25% │
│ │ 50% │ │
│ │ │ │
└────┴──────────┴────┘
```
**Behavior:**
* 25% margin on left and right
* Full height
* Perfectly centered horizontally
**Note:** Identified by `willCenter` property (line 97)
Positions window in the vertical center, 50% height.
**Raw Value:** `"VerticalCenterHalf"`
**URL Scheme:** `loop://VerticalCenterHalf`
**Frame Values:** `CGRect(x: 0, y: 0.25, width: 1.0, height: 0.5)` (line 120)
**Visual:**
```
┌───────────────────┐
│ 25% │
├───────────────────┤
│ Window 50% │
├───────────────────┤
│ 25% │
└───────────────────┘
```
**Behavior:**
* 25% margin on top and bottom
* Full width
* Perfectly centered vertically
**Note:** Identified by `willCenter` property (line 97)
## Quarters
Defined in the static `quarters` array (line 77):
```swift theme={null}
static var quarters: [WindowDirection] {
[.topLeftQuarter, .topRightQuarter,
.bottomLeftQuarter, .bottomRightQuarter]
}
```
Each quarter occupies exactly 25% of the screen space (50% width × 50% height).
### topLeftQuarter
Positions window in the top-left quarter of the screen.
**Raw Value:** `"TopLeftQuarter"`
**URL Scheme:** `loop://TopLeftQuarter`
**Frame Values:** `CGRect(x: 0, y: 0, width: 0.5, height: 0.5)` (line 122)
**Visual:**
```
┌─────────┬─────────┐
│ Window │ │
│ 25% │ │
├─────────┼─────────┤
│ │ │
└─────────┴─────────┘
```
### topRightQuarter
Positions window in the top-right quarter of the screen.
**Raw Value:** `"TopRightQuarter"`
**URL Scheme:** `loop://TopRightQuarter`
**Frame Values:** `CGRect(x: 0.5, y: 0, width: 0.5, height: 0.5)` (line 123)
**Visual:**
```
┌─────────┬─────────┐
│ │ Window │
│ │ 25% │
├─────────┼─────────┤
│ │ │
└─────────┴─────────┘
```
### bottomLeftQuarter
Positions window in the bottom-left quarter of the screen.
**Raw Value:** `"BottomLeftQuarter"`
**URL Scheme:** `loop://BottomLeftQuarter`
**Frame Values:** `CGRect(x: 0, y: 0.5, width: 0.5, height: 0.5)` (line 125)
**Visual:**
```
┌─────────┬─────────┐
│ │ │
├─────────┼─────────┤
│ Window │ │
│ 25% │ │
└─────────┴─────────┘
```
### bottomRightQuarter
Positions window in the bottom-right quarter of the screen.
**Raw Value:** `"BottomRightQuarter"`
**URL Scheme:** `loop://BottomRightQuarter`
**Frame Values:** `CGRect(x: 0.5, y: 0.5, width: 0.5, height: 0.5)` (line 124)
**Visual:**
```
┌─────────┬─────────┐
│ │ │
├─────────┼─────────┤
│ │ Window │
│ │ 25% │
└─────────┴─────────┘
```
## Complete Layout Visualization
### All Halves
```
Top Half Vertical Center Half
┌───────────────────┐ ┌───────────────────┐
│ Top Half │ │ │
├─────────┬─────────┤ ├───────────────────┤
│ Left │ Right │ │ Vertical Center │
│ Half │ Half │ ├───────────────────┤
├─────────┴─────────┤ │ │
│ Bottom Half │ └───────────────────┘
└───────────────────┘
Horizontal Center Half
┌────┬──────────┬────┐
│ │ │ │
│ │Horiz Ctr │ │
│ │ │ │
└────┴──────────┴────┘
```
### All Quarters
```
┌─────────┬─────────┐
│ Top │ Top │
│ Left │ Right │
├─────────┼─────────┤
│ Bottom │ Bottom │
│ Left │ Right │
└─────────┴─────────┘
```
## Usage Examples
### Split Screen Workflow
```bash theme={null}
# Position two windows side-by-side
open "loop://LeftHalf" # First window
open "loop://RightHalf" # Second window
# Stack two windows vertically
open "loop://TopHalf" # First window
open "loop://BottomHalf" # Second window
```
### Quad Layout
```bash theme={null}
# Create a 4-window grid layout
open "loop://TopLeftQuarter" # Window 1
open "loop://TopRightQuarter" # Window 2
open "loop://BottomLeftQuarter" # Window 3
open "loop://BottomRightQuarter" # Window 4
```
### Centered Presentation
```bash theme={null}
# Center content with margins
open "loop://HorizontalCenterHalf" # Centered with side margins
open "loop://VerticalCenterHalf" # Centered with top/bottom margins
```
## Radial Menu Behavior
All halves and quarters have radial menu angles, appearing as directional options in the radial interface:
* **Left/Right/Top/Bottom Halves:** Appear at cardinal directions
* **Quarters:** Appear at diagonal angles
* **Center Halves:** Appear at cardinal directions with centering indicator
## Related Actions
More precise positioning options
Maximize and centering actions
Fine-tune window sizes
Complete action reference