When selecting a color on the color source, if you pressed cancel, it
would cause it to set the color to black. Instead, make sure to check
isValid() on the returned color value to see if the user pressed cancel
when selecting a color.
Because devices can take significant time to enumerate, defer the
properties creation to a separate thread. The author of this commit
feels a great amount of displeasure over having to write this.
The source toolbar allows quick and easy access to properties and
filers, and shows common properties/features of a source type. For
example, when you select a media source, VLC source, or the slideshow
source, you'll get media controls to control playback of the media. If
you select a text source you can edit the font, color, or text if
applicable. Or if you select a capture source, you can select the
display/window/etc to capture for that source.
If the source toolbar is not desired and is viewed as taking up valuable
space in the window, it can be disabled via the view menu.
Co-authored-by: Clayton Groeneveld <claytong1214@gmail.com>
Co-authored-by: Jim <obs.jim@gmail.com>
