How to load large images in memory ?
in [TCL]
|
From: ABU on 28 Jul 2010 09:19 Loading a large image (2000x2000) may take several seconds (1..3) on my old PC. photo create image AAA -file aaa.jpg and during this loading time, the user interface is not responding. Using threads (package Thread) is not a solution, since different threads have separate data space, and its "tsv" extension cannot work with "image data" (I should convert the image-data in a binary string, then I should pass this huge string from one thread to another, then re-convert to 'image-data' ) ..... Noooo Any link for an app (or better a library/package) able to manage large images.
From: Googie on 28 Jul 2010 09:37 ABU wrote: > Loading a large image (2000x2000) may take several seconds (1..3) on > my old PC. > photo create image AAA -file aaa.jpg > and during this loading time, the user interface is not responding. > > Using threads (package Thread) is not a solution, since different > threads have separate data space, and its "tsv" extension cannot work > with "image data" (I should convert the image-data in a binary string, > then I should pass this huge string from one thread to another, then > re-convert to 'image-data' ) ..... Noooo > > Any link for an app (or better a library/package) able to manage large > images. Thread package can be used anyway. Read file contents to a variable, share the variable, encode value with base64 (somebody correct me if I'm wrong about that one) and than use it in [image create photo AAA -data $var]. -- Pozdrawiam! (Regards!) Googie
|
Pages: 1 Prev: TCL/TK for MacOS 9 Classic? Next: Rotating lists clockwise |