Resize event isn't called on time

[morajabi]

In order to preserve window control buttons position, we need to re-apply the logic to update their position on resize, move, and exit/start full-screen. (taken from Electron) Although the move event works fine, on resize we get a flicker.

Code that updates the titlebar:

   unsafe {
            let id = self.ns_window().unwrap() as cocoa::base::id;
            NSWindow::setTitlebarAppearsTransparent_(id, cocoa::base::YES);
            let mut style_mask = id.styleMask();
            style_mask.set(
                NSWindowStyleMask::NSFullSizeContentViewWindowMask,
                title_transparent,
            );

            if remove_tool_bar {
                style_mask.remove(
                    NSWindowStyleMask::NSClosableWindowMask
                        | NSWindowStyleMask::NSMiniaturizableWindowMask
                        | NSWindowStyleMask::NSResizableWindowMask,
                );
            }

            id.setStyleMask_(style_mask);

            id.setTitleVisibility_(if title_transparent {
                NSWindowTitleVisibility::NSWindowTitleHidden
            } else {
                NSWindowTitleVisibility::NSWindowTitleVisible
            });

            id.setTitlebarAppearsTransparent_(if title_transparent {
                cocoa::base::YES
            } else {
                cocoa::base::NO
            });

            let title_bar_x = -4.0;
            let title_bar_y = 26.0;

            // TAKEN FROM ELECTRON
            // https://github.com/patr0nus/DeskGap/blob/master/lib/src/platform/mac/BrowserWindow.mm#L100
            // also need to handle on full screen enter, exit, resize, etc

            let close = NSWindow::standardWindowButton_(id, NSWindowButton::NSWindowCloseButton);
            let miniaturize = id.standardWindowButton_(NSWindowButton::NSWindowMiniaturizeButton);
            let zoom = id.standardWindowButton_(NSWindowButton::NSWindowZoomButton);

            let title_bar_container_view = close.superview().superview();

            let button_height = NSView::frame(close).size.height;
            let title_bar_frame_height = button_height + title_bar_y;
            let mut title_bar_rect = NSView::frame(title_bar_container_view);
            title_bar_rect.size.height = title_bar_frame_height;
            title_bar_rect.origin.y = NSWindow::frame(id).size.height - title_bar_frame_height;
            NSView::setFrameOrigin(title_bar_container_view, title_bar_rect.origin);
            NSView::setFrameSize(title_bar_container_view, title_bar_rect.size);

            // OG: NSArray* windowButtons = @[ close, miniaturize, zoom ];
            // i don't know what is @ in rust code
            let _window_buttons = [close, miniaturize, zoom];
            let space_between = NSView::frame(miniaturize).origin.x - NSView::frame(close).origin.x;

            let mut button_rect1 = NSView::frame(close);
            button_rect1.origin.x = title_bar_x + (1.0 * space_between);
            button_rect1.origin.y = (title_bar_frame_height - button_rect1.size.height) / 2.0;
            NSView::setFrameOrigin(close, button_rect1.origin);

            let mut button_rect2 = NSView::frame(miniaturize);
            button_rect2.origin.x = title_bar_x + (2.0 * space_between);
            button_rect2.origin.y = (title_bar_frame_height - button_rect2.size.height) / 2.0;
            NSView::setFrameOrigin(miniaturize, button_rect2.origin);

            let mut button_rect3 = NSView::frame(zoom);
            button_rect3.origin.x = title_bar_x + (3.0 * space_between);
            button_rect3.origin.y = (title_bar_frame_height - button_rect3.size.height) / 2.0;
            NSView::setFrameOrigin(zoom, button_rect3.origin);
        }

cc @wusyong (sorry to @, since you were recently involved in the resize logic, I'd love to know what can I do about it.)

[morajabi]

For future reference, there is another event made for this: Event::RedrawRequested(_).
However, this feature has been made in tao in #513 so once merged we'd no longer need to do it manually.

[alexandernanberg]

@morajabi Have you been able to use Event::RedrawRequested(_) in your Tauri app? Don't quite understand if it's possible or I'm missing something