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2018-06-28T21:16:10Z

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wiki>Aligorith: /* Usage */

2016-03-13T11:15:57Z

‎Usage

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= Adding a new Vector Icon =
"Vector Icons" are special icons in Blender that are defined programmatically in C using OpenGL commands. They are not to be confused with the standard icons used all over the rest of the UI (see [[Dev:2.5/Doc/How_to/Add_an_icon|this page]] instead). They are currently only used for two special cases:
# When the icons in question need to be scaleable and have clear, sharp lines (e.g. dropdown arrows)
# When the appearance of the icons in question depend on the theme settings

'''Note''': You should probably not be using this. These notes are just here in case anyone ever runs into the need to try whether these do what is needed.

== Checklist ==
Assuming you've got an icon called <code>my_icon</code>...

=== editors/include/UI_icons.h ===
* '''"DEF_VICO" block at end of file''' - Add some DEF_VICO entries for your icon types there. e.g,
<code>
DEF_VICO(MY_ICON_VEC)
</code>

=== editors/interface/interface_icons.c ===
* '''Just above "#ifndef WITH_HEADLESS" (above <code>init_brush_icons()</code>)''' - Add a function for drawing your icon as follows:
<code>
static void vicon_my_icon_draw(int x, int y, int w, int h, float alpha)
{
... some OpenGL drawing commands here - See the others for examples of what to do and how ...
}
</code>

* '''init_internal_icons()''' - Add a call to link the VICO identifier to the draw function:
<code>
def_internal_vicon(VICON_MY_ICON_VEC, vicon_my_icon_draw);
</code>

== Usage ==
Use the icon by doing:
<code>
VICO_MY_ICON
</code>
in your code, when you'd normally have used <code>ICON_*</code>

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