Transparent frame doesn't work anymore on latest webview-sys's commit about web-view HOT 5 CLOSED

I can still reproduce this behavior. Is there a workaround to create transparent windows?

from web-view.

This seems like https://github.com/zserge/webview issue. Have you reported it there? This is just binding library, meaning we wrap webview and cannot fix regressions directly here.

from web-view.

Thanks, I'll do it and link the issue to that one to keep track of it.

from web-view.

Bump. Issue seems to have come back. No transparency when running example code in this issue.

from web-view.

After pouring over the documentation across multiple apps and platforms using gtk and webkit2 I built a hack using the crates already used within web-view that provides transparency (at least for linux):

/// Update Gtk's Screen w/ Custom CSS to make Transparent
fn transparency_hack() {
    use gdk_sys::gdk_screen_get_default;
    use gtk_sys::*;
    use std::ffi::CString;
    // generate css-provider
    let provider = unsafe { gtk_css_provider_new() };
    // apply css to css-provider
    let css = CString::new("* { background: transparent }").unwrap();
    let clen = css.as_bytes().len();
    let mut error = std::ptr::null_mut();
    unsafe { gtk_css_provider_load_from_data(provider, css.as_ptr() as _, clen as _, &mut error) };
    // retrieve screen and apply css- provider to screen
    let prio = GTK_STYLE_PROVIDER_PRIORITY_APPLICATION;
    let screen = unsafe { gdk_screen_get_default() };
    unsafe { gtk_style_context_add_provider_for_screen(screen, provider as _, prio as _) };
}

Make sure to run this after building the web-view instance since gtk has to be initialized first before this can work.

Might be the wrong way to go about it but it works lol.
It might be years late, but if you wanted to know @gcstr here it is. :)

Edit: had to tweak the code a gazillion times to fix a few glib errors that were logging to stderr when they could be avoided. fixed how hopefully.

from web-view.