[Freeciv-Dev] Re: (PR#12111) Re: Xaw3d client startup problem(png problem)

["Vijay Kiran Kamuju" <infyquest@xxxxxxxxx>]

<URL: http://bugs.freeciv.org/Ticket/Display.html?id=12111 >

hi,

I think we can make a function based on this files so that we can
convert paletted images to RGBA images.

so that we can call this function if the image is a rgba image

bye,
vijay


On Fri, 18 Feb 2005 09:49:14 -0800, Egor Vyscrebentsov <evyscr@xxxxxxxxx> wrote:
> 
> <URL: http://bugs.freeciv.org/Ticket/Display.html?id=12111 >
> 
> On Thu, 17 Feb 2005 05:11:01 -0800
> Vijay Kiran Kamuju <infyquest@xxxxxxxxx> wrote:
> 
> VKK>i think in the next beta u might keep this line xaw-client is currently 
> broken.
> VKK>
> VKK>i am new to XWindows coding, i am trying to understand the code.
> VKK>
> VKK>the code thats affecting is in the graphics.c file in client/gui-xaw
> 
> Yes
> 
> VKK>the function thats affecting is loadgfxfile()
> 
> Yes
> 
> VKK>in the function we are trying to get the palette infomation only with
> VKK>out checking whether the file is a paletted png file or a rgba png
> VKK>file.
> VKK>
> VKK>i could make that much only,
> VKK>
> VKK>i could not understand the rest of the code.
> 
> Me too...
> 
> VKK>if the file is a palettd png file, can you please explain what we are 
> doing.
> 
> Well, we get a palette. (This mean we create an array of colors.)
> Next, we get a png row (array of bytes, byte is a number of color in palette).
> Next, we assign pixels in sprite, which will be returned by function.
> 
> VKK>i tring to port the code in the gui-win32 for the gui-xaw.
> 
> Hm, don't know if this will give good results. Main idea of xaw-client use 
> paletted
> images is paletted displays (at least, i have listened this from other 
> people).
> What i want is allow gui-xaw to use both types of images.
> 
> VKK>when i tried google, for conversion of paletted png images i could get
> VKK>only links for libgd, where i could find no info regarding it.
> 
> http://www.libpng.org/pub/png/apps/pngquant.html
> This tool allow to make paletted (not only 256 colors) pngs from color RGBA.
> I use this tool (with some my patches) to get colormap tilesets (and working 
> gui-xaw :).
> (I even think about including these two c-files into gui-xaw.)
> 
> `man libpng` has a good info about all(?) libpng functions.
> 
> Thanks, evyscr.
> 
>