Tools & Interactions
A reference guide to all built-in tools, viewport options, and interactive controls in OpenGPEX.
Sidebar Drawers
| Drawer | Description |
|---|---|
| Layers | Z-order management, visibility, opacity, blend modes, masks, merge |
| Drawing Tools | Text, Brush, Eraser tools + Magic Wand, Lasso selection |
| Adjustments | 5-tab panel: Basic (5 sliders), Curves (RGB + per-channel), Levels (histogram), Channel Mixer (3×3), Color Balance (shadows/midtones/highlights) |
| AI Tools | Background Removal, Upscale (2×/4×), Segmentation — all client-side ONNX |
| ComfyUI Bridge | Connect to local/remote ComfyUI for inpainting, style transfer, generation |
| Image Info | Dimensions, DPI, ICC Profile, bit depth, EXIF, export configuration |
Option Bars
| Bar | Controls |
|---|---|
| Clip Options | Crop shapes, aspect ratio presets, canvas resize, branch clone, clipboard |
| Color Options | Eyedropper, color wheel (with pin toggle), paint bucket fill |
| Viewport Options | Zoom slider (5–500%), fit-to-viewport, 1:1, rotate, flip |
Transform Tool
| Control | Action |
|---|---|
| Drag corner | Scale (+ Shift = proportional) |
| Drag edge | Scale one axis |
| Drag rotation handle | Free rotate (+ Shift = snap 15°) |
| Alt + drag | Scale from center |
| Arrow keys | Nudge 1px (+ Shift = 10px) |
Text Tool
| Control | Action |
|---|---|
| Click canvas | Create new text layer |
| Double-click text | Enter edit mode |
| Drag bounding box | Resize text area |
| Escape | Exit editing |
Viewport Navigation
| Input | Action |
|---|---|
| Space + drag | Pan |
| Middle mouse drag | Pan |
| Scroll wheel | Zoom (centered on cursor) |
| Pinch gesture | Zoom |
| Ctrl+0 | Fit to viewport |
| Ctrl+1 | Zoom to 100% |
Modifier Keys
| Key | Effect |
|---|---|
| Shift | Constrain proportions / snap angles |
| Alt/Option | Transform from center / clone |
| Space | Temporary pan tool |
| Ctrl/Cmd | System shortcuts |
Last updated: 2026-07-30