Palette

This simple custom widget accepts a list of colours when created, and presents these colours as an array of coloured buttons to click. Clicking on a button emits a signal with the clicked colour. Perfect to use in a bitmap drawing application.

Three widgets are provided —

PaletteHorizontal a linear horizontal palette

Horizontal Palette widget

PaletteGrid a grid palette. This also accepts an optional second parameter n_columns, which is the number of columns to lay the colours out in. The default is 5 (as seen below).

PaletteGrid('17undertones', n_columns=5)

GridLayout Palette with 17 undertones

There is also a vertical layout PaletteVertical available.

There are 3 built-in named colour-schemes paired12, category10 and 17undertones.

Paired 12 grid palette

But you can also provide any list of colours you like when creating the widget.

Over 15,000 developers have bought Create GUI Applications with Python & Qt!

Take a look

Downloadable ebook (PDF, ePub) & Complete Source code

Also available from Leanpub and Amazon Paperback

[[ discount.discount_pc ]]% OFF for the next [[ discount.duration ]] [[discount.description ]] with the code [[ discount.coupon_code ]]

Purchasing Power Parity

Developers in [[ country ]] get [[ discount.discount_pc ]]% OFF on all books & courses with code [[ discount.coupon_code ]]

PaletteGrid(['#000003', '#160B39', '#410967', '#6A176E', '#932567', '#BA3655', '#DC5039', '#F2751A', '#FBA40A', '#F6D542', '#FCFEA4'])

Bokeh Inferno 11

Signals

The palette provides only a single signal .selected which is emitted when a colour is selected in the palette. This sends the selected colour, in the same format as it was when setting the palette.

palette = PaletteHorizontal(['#000003', '#160B39', '#410967'])
palette.selected.connect(print)

The above would print to the console #000003 or #160B39 or #410967 as each colour was clicked.