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Contents
# encoding: utf-8
module Fidgit
class ColorPicker < Composite
CHANNELS = [:red, :green, :blue]
DEFAULT_CHANNEL_NAMES = CHANNELS.map {|c| c.to_s.capitalize }
INDICATOR_HEIGHT = 25
event :changed
def color; @color.dup; end
def color=(value)
@color = value.dup
CHANNELS.each do |channel|
@sliders[channel].value = @color.send channel
end
publish :changed, @color.dup
value
end
# @param (see Composite#initialize)
# @option (see Composite#initialize)
def initialize(options = {}, &block)
options = {
padding: 0,
spacing: 0,
channel_names: DEFAULT_CHANNEL_NAMES,
color: default(:color),
indicator_height: default(:indicator_height),
}.merge! options
@color = options[:color].dup
@indicator_height = options[:indicator_height]
super(options)
slider_width = width
vertical do
@sliders = {}
CHANNELS.each_with_index do |channel, i|
@sliders[channel] = slider(value: @color.send(channel), range: 0..255, width: slider_width,
tip: options[:channel_names][i]) do |sender, value|
@color.send "#{channel}=", value
@indicator.background_color = @color
publish :changed, @color.dup
end
end
@indicator = label '', background_color: @color, width: slider_width, height: @indicator_height
end
end
protected
# Use block as an event handler.
def post_init_block(&block)
subscribe :changed, &block
end
end
end
Version data entries
16 entries across 16 versions & 1 rubygems