GlowIcons
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== Format == | == Format == | ||
| − | A GlowIcons file is (more or less) a valid [[Amiga_Workbench icon|original format]] icon file. It contains an icon | + | A GlowIcons file is (more or less) a valid [[Amiga_Workbench icon|original format]] icon file. It contains an icon in the old format, which will be displayed by applications that don't support GlowIcons format. This icon may be a placeholder (a blank 1×1 or 4×4 icon is common), a generic icon, or a low-quality version of the real icon. |
| + | |||
| + | A GlowIcons file can also contain an icon in [[NewIcons]] format, to be used by applications that support NewIcons but not GlowIcons. | ||
Starting at the position where a file in the original format would be expected to end, the ''real'' GlowIcons data begins. Locating this position in the file is nontrivial. | Starting at the position where a file in the original format would be expected to end, the ''real'' GlowIcons data begins. Locating this position in the file is nontrivial. | ||
The GlowIcons data is in [[IFF]] format, and so begins with the ASCII string "<code>FORM</code>". | The GlowIcons data is in [[IFF]] format, and so begins with the ASCII string "<code>FORM</code>". | ||
| + | |||
| + | The icon usually consists of two images. By convention, the second image is outlined with a yellow "glowing" effect. | ||
| + | |||
| + | Each image or palette may be compressed, using a variant of [[PackBits]] compression. | ||
== Identification == | == Identification == | ||
| − | As with all the | + | As with all the Amiga Workbench icon formats, files begin with bytes <code>0xE3 0x10</code>. |
The ASCII string "<code>FORM</code>" appears somewhere in the file, followed (with 4 intervening bytes) by "<code>ICON</code>". | The ASCII string "<code>FORM</code>" appears somewhere in the file, followed (with 4 intervening bytes) by "<code>ICON</code>". | ||
| + | |||
| + | == Software == | ||
| + | * {{Deark}} | ||
== Specifications == | == Specifications == | ||
| − | * http://www.evillabs.net | + | * http://www.evillabs.net/index.php/Amiga_Icon_Formats |
== Sample files == | == Sample files == | ||
* http://www.amiga-look.org/category/glowicons | * http://www.amiga-look.org/category/glowicons | ||
* Some of the icons at http://aminet.net/pix/icon | * Some of the icons at http://aminet.net/pix/icon | ||
| + | * {{DexvertSamples|image/glowIcon}} | ||
== Links == | == Links == | ||
* [[Wikipedia:NewIcons|Wikipedia: NewIcons]] - Also has information about GlowIcons | * [[Wikipedia:NewIcons|Wikipedia: NewIcons]] - Also has information about GlowIcons | ||
| + | [[Category:IFF based file formats]] | ||
[[Category:Amiga]] | [[Category:Amiga]] | ||
Latest revision as of 11:47, 22 March 2024
GlowIcons (or Glow Icon) is the native icon file format for AmigaOS 3.5–4.0. It is sometimes known as OS35 images or OS3.5 extension icons.
A GlowIcons image is usually 46×46 pixels, with up to 256 colors.
See Amiga Workbench icon for more information about Amiga icons.
Contents |
[edit] Format
A GlowIcons file is (more or less) a valid original format icon file. It contains an icon in the old format, which will be displayed by applications that don't support GlowIcons format. This icon may be a placeholder (a blank 1×1 or 4×4 icon is common), a generic icon, or a low-quality version of the real icon.
A GlowIcons file can also contain an icon in NewIcons format, to be used by applications that support NewIcons but not GlowIcons.
Starting at the position where a file in the original format would be expected to end, the real GlowIcons data begins. Locating this position in the file is nontrivial.
The GlowIcons data is in IFF format, and so begins with the ASCII string "FORM".
The icon usually consists of two images. By convention, the second image is outlined with a yellow "glowing" effect.
Each image or palette may be compressed, using a variant of PackBits compression.
[edit] Identification
As with all the Amiga Workbench icon formats, files begin with bytes 0xE3 0x10.
The ASCII string "FORM" appears somewhere in the file, followed (with 4 intervening bytes) by "ICON".
[edit] Software
[edit] Specifications
[edit] Sample files
- http://www.amiga-look.org/category/glowicons
- Some of the icons at http://aminet.net/pix/icon
- dexvert samples — image/glowIcon
[edit] Links
- Wikipedia: NewIcons - Also has information about GlowIcons
