Thanks for that - works perfectly.
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of abhi
Sent: Sunday, 14 June 2009 2:55 PM
To: [email protected]
Subject: Re: Custom widgets in Shoes
Daniel,
The code below fixes the problem. The ovals were overlapping since the
positions of the shape are relative to the container. I have done the
following to prevent the overlapping of the ovals and to fix a few
other problems.
1. wrap the oval within a flow of fixed height
2. specify positions of oval relative to the flow
3. fix the height of the widget, which by default contains a stack
container. This prevents wrapping of consecutive radio butttons.
Width = 12
Height = 14
OutlineColor = "#000000"
OutlineWidth = 2
DeselectedColor = "#CCCCCC"
class Shoes::Onedot < Shoes::Widget
attr_reader :selected_color
attr_reader :selected
def initialize(opts = {})
self.width = 20
self.height = 20
flow :height => 20, :width => 20 do
super()
selected = opts[:selected]
selected_color = opts[:selected_color]
stroke OutlineColor
strokewidth OutlineWidth
@oval = oval(4, 3, Width, Height)
draw_dot
@oval.click do
toggle
end
end
end
def change(&block)
@on_changed = block
end
def draw(container, boolean)
super(container, boolean)
end
def draw_dot
@oval.fill = (selected ? selected_color || royalblue : DeselectedColor)
end
def selected_color=(value)
@selected_color = value
draw_dot
end
def selected=(value)
@selected = value
changed
end
def toggle
# For some reason, selected= doesn't work properly...
@selected = !selected
changed
end
private
def changed
if @on_changed then
if @on_changed.arity == 0 then
@on_changed.call
else
@on_changed.call(selected)
end
end
draw_dot
end
end
Shoes.app do
stack do
sampledot = onedot
sampledot.selected = true
sampledot.selected_color = tomato
end
stack do
flow(:width => "100%") do
dot2 = onedot
dot3 = onedot
end
end
end
On Sun, Jun 14, 2009 at 1:51 AM, Daniel Heath<[email protected]>
wrote:
> Hi all,
>
> I'm trying to write a custom widget in shoes which is similar to a radio
> button, but is drawn using shapes to get a particular appearance.
>
> All works nicely except for placement. Shoes doesn't seem to realize what
> size the object is, so no space ends up being allocated for it (width &
> height of 0).
>
> The sample code below draws three of these, but they all get drawn in the
> same space. If I include a para or something, they get moved around - but
I
> would prefer shoes to recognize the width of the oval & position
everything
> accordingly.
>
> Thanks,
>
> Daniel
>
> Width = 12
> Height = 14
>
> OutlineColor = "#000000"
> OutlineWidth = 2
> DeselectedColor = "#CCCCCC"
>
> class Shoes::Onedot < Shoes::Widget
> attr_reader :selected_color
> attr_reader :selected
>
> def initialize(opts = {})
> super()
> selected = opts[:selected]
> selected_color = opts[:selected_color]
>
> stroke OutlineColor
> strokewidth OutlineWidth
> �...@oval = oval(top, left, Width, Height)
> draw_dot
> �[email protected] do
> toggle
> end
> end
>
> def change(&block)
> �...@on_changed = block
> end
>
> def draw(container, boolean)
> super(container, boolean)
> end
>
> def draw_dot
> �[email protected] = (selected ? selected_color || royalblue : DeselectedColor)
> end
>
> def selected_color=(value)
> �...@selected_color = value
> draw_dot
> end
>
> def selected=(value)
> �...@selected = value
> changed
> end
>
> def toggle
> # For some reason, selected= doesn't work properly...
> �...@selected = !selected
> changed
> end
>
> private
>
> def changed
> if @on_changed then
> if @on_changed.arity == 0 then
> �...@on_changed.call
> else
> �...@on_changed.call(selected)
> end
> end
> draw_dot
> end
>
> end
>
>
> Shoes.app do
>
> stack do
> sampledot = onedot
> sampledot.selected = true
> sampledot.selected_color = tomato
> end
>
> stack do
> flow(:width => "100%") do
> dot2 = onedot
> dot3 = onedot
> end
> end
>
> end
>
>
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