The Bucket Fill tool is used to fill areas of a layer or selection with either color or a pattern.
Bucket Fill Settings
The Opacity slider sets the transparency level for the fill. A higher opacity setting results in a more opaque fill and a lower setting results in a more transparent fill.
The Mode dropdown list provides a selection of paint application modes. A list of these modes can be found in the glossary.
This option toggles the sampling from all layers. If Sample Merged is active, fills can be made on a lower layer, while the color information used for threshold checking is located further up. Simply select the lower level and ensure that a layer above is visible for color weighting.
The Threshold slider sets the level at which color weights are measured for fill boundaries. A higher setting will fill more of a multi colored image and conversely, a lower setting will fill less area.
FG Color Fill: This sets the fill color to the currently selected foreground color.
BG Color Fill: This sets the fill color to the currently selected background color.
Pattern Fill: This option sets the fill color to the currently selected pattern.
See also: Pattern Selection .
Default Keyboard Shortcut: Shift-B
Ctrl toggles the use of BG Color Fill or FG Color Fill on the fly.