css - Possibly transparent WebKit-Overlay in Gtk/Cairo? -

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i'm building application, cross-platform (linux, win, os x), , graphics stuff via cairo(mm), supported little bit of gtk+ scaffolding (i.e. drawingarea). need ui elements, require custom look. ideally should displayed transparent overlay (i.e. different opacities different parts of ui).

as gtk+ hard customize (e.g. want edit-field suggestion-list above it), , me knowing how i'd achieve html/css, question popped up: why not let libwebkit handle ui stuff?

i don't have experience webkit, need know is:

  1. does above reasoning make sense else?
  2. css has opacity, can interface webkit in such way renders onto rgba-offscreen surface, alpha-values inherited layout-processing of css styles?
  3. even if 2. not work, has used libwebkit on offscreen surface, afaik requires redirection of keyboard , mouse interactions, via gtk+s provisions?

is possible render web content on clear background using webkit? gets.


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