von dust » 29 Feb 2008, 12:36
du solltest noch erwähnen, dass sie in svg sein sollten. also vektorformat wegen dem skalieren.
http://tango.freedesktop.org/Tango_Icon ... Guidelines
Sizes
There are three major icon sizes an icon theme must address: Large, Small, and Extra Small.
Since Tango uses vectors for the large size, all other sizes—excluding small and extra small—are handled by scaling this vector icon to the target resolution. The reason to explicitly define small and extra small sizes (and not just use a scaled version of the large size) is because using such a small size requires object simplification, which often includes a change in perspective.
Some desktops do not make the extra effort to create pixel-perfect small sized renderings and simply render the large size onto the tiny canvas. While this may appear to save a lot of work, we believe the extra effort is only marginal and the resulting extra definition ("crispness") is worth it. While display resolutions increase over the years, there is also a fairly large market of small devices such as PDAs that will benefit greatly from the attention to the smaller-sized icons. Below, we include suggested workflows to help the icon designer to be as efficient as possible when creating all sizes.
[edit]
Large
x-directory-normal-drag-accept.png
This size is mainly used for desktop icons and in the file manager views.
The bitmap size is 48×48 pixels. We strongly suggest creating a SVG version for this size since it can be easily scaled for other resolutions as well. Vector icons will be required for pixel resolution-independent interfaces as well, which define size by absolute units such as millimeters or inches.
[edit]
(Optional) Medium
This size is not required to be created. If missing, the Large SVG can be rendered into this 32x32 canvas. As 32x32 is a common size on platforms such as Windows XP or KDE, providing a pixel-perfect rendering of 32x32 pixels is suggested. It can be created out of the Large SVG fairly easily.
[edit]
Small
x-directory-normal-drag-accept.png
"Small" is the common size for application toolbar icons.
Its bitmap size is 22×22 pixels. This size is common for toolbars in KDE and the GIMP.
Historically Gnome uses 24×24 size (which is ¼ of 48×48); just adding a 1 pixel empty space on all sides can make Tango icons useful on the Gnome desktop in the transition phase. One can easily do this with imagemagick:
convert -bordercolor Transparent -border 1x1 tango_size.png gnome_size.png
[edit]
Extra Small
x-directory-normal-drag-accept.png
At 16×16 pixels, the "Extra Small" size is used in places such as lists (file dialog, message list in an e-mail client, etc.) and menus.
Note, however: The Tango Project recommends keeping the number of menu items with an icon to a minimum. Only the most frequently used menu items should feature an icon. Otherwise the purpose of visual anchor is nullified by introducing visual noise in the menu.
du solltest noch erwähnen, dass sie in svg sein sollten. also vektorformat wegen dem skalieren.
http://tango.freedesktop.org/Tango_Icon_Theme_Guidelines
[quote] Sizes
There are three major icon sizes an icon theme must address: Large, Small, and Extra Small.
Since Tango uses vectors for the large size, all other sizes—excluding small and extra small—are handled by scaling this vector icon to the target resolution. The reason to explicitly define small and extra small sizes (and not just use a scaled version of the large size) is because using such a small size requires object simplification, which often includes a change in perspective.
Some desktops do not make the extra effort to create pixel-perfect small sized renderings and simply render the large size onto the tiny canvas. While this may appear to save a lot of work, we believe the extra effort is only marginal and the resulting extra definition ("crispness") is worth it. While display resolutions increase over the years, there is also a fairly large market of small devices such as PDAs that will benefit greatly from the attention to the smaller-sized icons. Below, we include suggested workflows to help the icon designer to be as efficient as possible when creating all sizes.
[edit]
Large
x-directory-normal-drag-accept.png
This size is mainly used for desktop icons and in the file manager views.
The bitmap size is 48×48 pixels. We strongly suggest creating a SVG version for this size since it can be easily scaled for other resolutions as well. Vector icons will be required for pixel resolution-independent interfaces as well, which define size by absolute units such as millimeters or inches.
[edit]
(Optional) Medium
This size is not required to be created. If missing, the Large SVG can be rendered into this 32x32 canvas. As 32x32 is a common size on platforms such as Windows XP or KDE, providing a pixel-perfect rendering of 32x32 pixels is suggested. It can be created out of the Large SVG fairly easily.
[edit]
Small
x-directory-normal-drag-accept.png
"Small" is the common size for application toolbar icons.
Its bitmap size is 22×22 pixels. This size is common for toolbars in KDE and the GIMP.
Historically Gnome uses 24×24 size (which is ¼ of 48×48); just adding a 1 pixel empty space on all sides can make Tango icons useful on the Gnome desktop in the transition phase. One can easily do this with imagemagick:
convert -bordercolor Transparent -border 1x1 tango_size.png gnome_size.png
[edit]
Extra Small
x-directory-normal-drag-accept.png
At 16×16 pixels, the "Extra Small" size is used in places such as lists (file dialog, message list in an e-mail client, etc.) and menus.
Note, however: The Tango Project recommends keeping the number of menu items with an icon to a minimum. Only the most frequently used menu items should feature an icon. Otherwise the purpose of visual anchor is nullified by introducing visual noise in the menu. [/quote]