[Openicc] Questions about color pickers and graphics libraries under LINUX

[Cyrille Berger]

Hi,

On Thursday 31 January 2008, Jan-Peter Homann wrote:
> Color picker on OS level:
> --------------------------
> - Which color picker projects on OS level exist ? (name / url)
KColorChooser (for KDE)

> - Which kind of colorspaces are supported in the colorpickers:
>     - RGB
>     - Gray
>     - CMYK
>     - Lab
>     - Spotcolors (described by name, Lab-value, alternative sRGB-value)
RGB, HSV

> - Do this colorpickes support ICC-profiles for the colorspaces ?
No.

> - Do this colorpickers can make use of a monitor profile ?
No.

> - What desktops can make use of this colorpicker ?
All.

> 2D graphics libraries on OS level (name and URL)
> ------------------------------
> - Which 2D graphics libraries exist on OS level, which deliver following
> functionalities:
>     - representing pixel images, vector graphics and fonts
A lot, among which the most famous are Qt, Cairo.

For fonts, everyone use the FreeType library.

>     - rasterizing a file containing images, vectorgraphic and fonts to a
> bytemap image (for display, print, file export)
>     - exporting a file containing images, vectorgraphic and fonts as PDF
Well the above mentioned libraries do that.

> - Which general colorspaces are supported in the graphics library:
>     - RGB
>     - Gray
>     - CMYK
>     - Lab
>     - Spotcolors (described by name, Lab-value, alternative sRGB-value)
Can't say for Cairo, but Qt accept to take values in RGB, Gray and Cmyk. Not 
sure about the internal logic, but as there is no profile it's not that 
usefull anyway.

> - What desktops can make use of this 2D graphics libray ?
All.



-- 
Cyrille Berger