Objective
Extend Script-Fu to include additional functions that help the user.
Key Concepts and Definitions
- Script-Fu: A scripting language based on Scheme
Additional Procedures
| Command | Purpose |
|---|---|
| (gimp-context-get-display) | Get the active display ID |
| (gimp-context-eraser-toggle) | Toggle the active tool to the eraser. |
| (gimp-context-eraser-paintbrush-toggle) | Toggle the active tool to the eraser and always return to the paintbrush |
| (gimp-context-get-eraser-active ) | Returns true if the Eraser Tool is active |
| (gimp-items-set-visible) | Set the visibility of a vector list of items |
| (gimp-context-get-brush-eraser-scale) | Returns the Paint Tool eraser scale |
| (gimp-context-get-brush-jitter) | Returns the Paint Tool jitter slider value |
| (gimp-context-set-brush-jitter) | Set all the Paint Tools jitter slider values |
| (gimp-layer-combine-alpha) | Combine the alpha channels of two layers |
Changes
New Script-Fu Functions:
(gimp-context-get-display): Retrieves the active display ID. This ID can then be used with other display-related functions like(gimp-display-present display-id).(gimp-context-eraser-toggle): Toggles the active tool between the eraser and the previously active tool.(gimp-context-eraser-paintbrush-toggle): Toggles the active tool between the eraser and the paintbrush tool.(gimp-context-get-eraser-active): Returns 1 if the Eraser Tool is active or 0.(gimp-items-set-visible): Allows setting the visibility of a vector list of items in bulk. This can help streamline visibility management for layers, paths, or other drawable items.(gimp-context-get-brush-eraser-scale): Gets the Paint Tool eraser scale option to use with the eraser toggles. This allows all the painting tool presets to have a specific sized eraser. Erase pencil lines with a big eraser, cut into brush strokes with a smaller eraser.(gimp-context-get-brush-jitter): Gets the Paint Tool jitter option to use with the eraser toggles. This allows us to set the jitter for the eraser to be the same as the brush, in a hacky way.(gimp-context-set-brush-jitter): Sets all the Paint Tools jitter options to the same jitter value, eraser, paintbrush, airbrush, pencil.(gimp-layer-combine-alpha): This procedure combines the alpha channels of two layers and writes the result into the first layer’s alpha channel. ADD, SUBTRACT, INTERSECT or REPLACE.
These additional functions enhance the flexibility of Script-Fu, enabling users to toggle between tools, manage visibility across multiple items, and integrate display information into their scripts, leading to more powerful automation and customization.