[Sugar-devel] xo colors & gradients

[Erik Blankinship]

rephrased: How would I specify that I want sugar to use an XO color to
create a gradient when my activity is running?

On Mon, Aug 23, 2010 at 3:46 PM, Erik Blankinship <erikb at mediamods.com>wrote:

>
>
> On Mon, Aug 23, 2010 at 3:14 PM, Walter Bender <walter.bender at gmail.com>wrote:
>
>> On Mon, Aug 23, 2010 at 1:52 PM, Erik Blankinship <erikb at mediamods.com>
>> wrote:
>> > When I launch an activity, the SVG icon used to display my activity
>> changes
>> > appearance by rendering with the XO colors.
>> > (1) Is there a way to render gradients using the fill color?  For
>> example,
>> > if the child's XO fill color is red, I would like to render an activity
>> icon
>> > using a red gradient.  Maybe there are tricks in SVG which make this
>> > possible?
>>
>> SVG does have a gradient you can use. I use them in the Turtle Art
>> blocks. For example,
>>
>> <defs>
>>    <linearGradient id="linearGradient1234">
>>        <stop style="stop-color:#ffffff;stop-opacity:1;" offset="0" />
>>        <stop style="stop-color:#000000;stop-opacity:1;" offset="1" />
>>    </linearGradient>
>>    <linearGradient
>>        xlink:href="#linearGradient1234"
>>        id="linearGradient5678"
>>        x1="0"
>>        y1="100 "
>>        x2="200"
>>        y2="300"
>>        gradientUnits="userSpaceOnUse" />
>> </defs>
>>
>> later,
>>
>> fill = "url(#linearGradient5678)"
>>
>>
> Thank you, it is helpful to see how gradients can be used in SVG.
>
> How would I specify that I want to sugar to use the XO color to create a
> gradient from the XO fill color when my activity is running?  As I
> understand it, sugar activity icons can expect stroke_color and fill_color
> to be provided when an activity is launched:
>
> <!ENTITY stroke_color "#010101">
> <!ENTITY fill_color "#FFFFFF">
>
> Given one of these colors, it would like to calculate the stop-colors in
> your example.
>
> Can I do this calculation in SVG?  Can my activity somehow pass this
> information to the SVG renderer when it is launched?
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.sugarlabs.org/archive/sugar-devel/attachments/20100823/d87f2a35/attachment.htm