Sha256: 22508b2ab4f53891cbef6ff3f480851e34b8fd4906364fdec52473d9e74613a4
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Versions: 16
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Contents
# encoding: utf-8
module Fidgit
# A basic scrolling area. It is not managed in any way (use ScrollWindow for that).
class ScrollArea < Container
# @return [Vertical] The content shown within this ScrollArea
attr_reader :content
def offset_x; x - @content.x; end
def offset_y; y - @content.y; end
def offset_x=(value)
@content.x = x - [[@content.width - width, value].min, 0].max
end
def offset_y=(value)
@content.y = y - [[@content.height - height, value].min, 0].max
end
# @option options [Number] :offset (0)
# @option options [Number] :offset_x (value of :offset option)
# @option options [Number] :offset_y (value of :offset option)
# @option options [Element] :owner The owner of the content, such as the scroll-window containing the content.
def initialize(options = {})
options = {
offset: 0,
owner: nil,
}.merge! options
@owner = options[:owner]
super(options)
@content = Vertical.new(parent: self, padding: 0)
self.offset_x = options[:offset_x] || options[:offset]
self.offset_y = options[:offset_y] || options[:offset]
end
def hit_element(x, y)
# Only pass on mouse events if they are inside the window.
if hit?(x, y)
@content.hit_element(x, y) || self
else
nil
end
end
def recalc
super
# Always recalc our owner if our content resizes, even though our size can't change even if the content changes
# (may encourage ScrollWindow to show/hide scroll-bars, for example)
@owner.recalc if @owner
end
protected
def draw_foreground
$window.clip_to(*rect) do
@content.draw
end
end
protected
def post_init_block(&block)
with(&block)
end
end
end
Version data entries
16 entries across 16 versions & 1 rubygems