gardesk/ers / 63e4df1

-version = "0.3.0"

-const SCALE_EPSILON: f64 = 0.01;

-fn display_scale_for_bounds(bounds: CGRect) -> f64 {

-    let point = CGPoint {

-        x: bounds.origin.x + bounds.size.width / 2.0,

-        y: bounds.origin.y + bounds.size.height / 2.0,

-    };

-

-    unsafe {

-        let mut display_id = 0u32;

-        let mut count = 0u32;

-        if CGGetDisplaysWithPoint(point, 1, &mut display_id, &mut count) != kCGErrorSuccess

-            || count == 0

-        {

-            return 2.0;

-        }

-

-        let mode = CGDisplayCopyDisplayMode(display_id);

-        if mode.is_null() {

-            return 2.0;

-        }

-

-        let width = CGDisplayModeGetWidth(mode) as f64;

-        let height = CGDisplayModeGetHeight(mode) as f64;

-        let pixel_width = CGDisplayModeGetPixelWidth(mode) as f64;

-        let pixel_height = CGDisplayModeGetPixelHeight(mode) as f64;

-        CFRelease(mode as CFTypeRef);

-

-        let scale_x = if width > 0.0 {

-            pixel_width / width

-        } else {

-            0.0

-        };

-        let scale_y = if height > 0.0 {

-            pixel_height / height

-        } else {

-            0.0

-        };

-

-        let scale = match (scale_x.is_finite(), scale_y.is_finite()) {

-            (true, true) if scale_x >= 1.0 && scale_y >= 1.0 => (scale_x + scale_y) / 2.0,

-            (true, _) if scale_x >= 1.0 => scale_x,

-            (_, true) if scale_y >= 1.0 => scale_y,

-            _ => 2.0,

-        };

-

-        debug!(

-            "[display_scale] display={} point=({:.1},{:.1}) scale={:.2}",

-            display_id, point.x, point.y, scale

-        );

-

-        scale

-    }

-}

-

-    fn remove_all(&mut self) {

-        // OverlayWindow's Drop closes the NSWindow.

-        self.overlays.clear();

-    }

-

-    /// With NSWindow.setFrame_display we no longer need a destroy-and-

-    /// recreate path on resize. Kept as a thin alias so existing call

-    /// sites keep working.

-    fn recreate(&mut self, target_wid: u32) {

-        self.sync_overlay(target_wid);

-    }

-

-                debug!("[focus-retry] front={} still untracked, retrying add_fresh", front);

-    // On the screenshot-exclusion research branch, default to file

-    // logging at debug level so we can diagnose the NSWindow refactor

-    // even when ers is spawned by tarmac (which inherits ers's stderr

-    // to wherever tarmac was launched, often invisibly).

-    let log_path = std::path::PathBuf::from("/tmp/ers-debug.log");

-    let log_file = std::fs::OpenOptions::new()

-        .create(true)

-        .append(true)

-        .open(&log_path)

-        .ok();

-        .unwrap_or_else(|_| tracing_subscriber::EnvFilter::new("ers=debug"));

-    if let Some(file) = log_file {

-        tracing_subscriber::fmt()

-            .with_env_filter(env_filter)

-            .with_writer(std::sync::Mutex::new(file))

-            .with_ansi(false)

-            .init();

-    } else {

-        tracing_subscriber::fmt()

-            .with_env_filter(env_filter)

-            .with_writer(std::io::stderr)

-            .init();

-    }

-/// Look up an overlay window in CGWindowListCopyWindowInfo and dump the

-/// keys that the screenshot picker / ScreenCaptureKit care about. Lets

-/// us tell whether SLSSetWindowSharingState(0) propagates through to

-/// the CG window list (the layer SCWindow filters on) or stops at SLS.

-fn probe_cg_window_info(target_wid: u32) {

-    unsafe {

-        let list = CGWindowListCopyWindowInfo(kCGWindowListOptionAll, kCGNullWindowID);

-        if list.is_null() {

-            debug!("[probe_cg_window_info] wid={target_wid} list is null");

-            return;

-        }

-        let count = CFArrayGetCount(list);

-        let wid_key = cf_string_from_static(c"kCGWindowNumber");

-        let sharing_key = cf_string_from_static(c"kCGWindowSharingState");

-        let layer_key = cf_string_from_static(c"kCGWindowLayer");

-        let alpha_key = cf_string_from_static(c"kCGWindowAlpha");

-        let on_screen_key = cf_string_from_static(c"kCGWindowIsOnscreen");

-        let mut found = false;

-

-        for i in 0..count {

-            let dict = CFArrayGetValueAtIndex(list, i);

-            if dict.is_null() {

-                continue;

-            }

-            let mut v: CFTypeRef = ptr::null();

-            let mut wid: u32 = 0;

-            if CFDictionaryGetValueIfPresent(dict, wid_key as CFTypeRef, &mut v) {

-                CFNumberGetValue(v, kCFNumberSInt32Type, &mut wid as *mut _ as *mut _);

-            }

-            if wid != target_wid {

-                continue;

-            }

-

-            let mut sharing: i32 = -1;

-            if CFDictionaryGetValueIfPresent(dict, sharing_key as CFTypeRef, &mut v) {

-                CFNumberGetValue(v, kCFNumberSInt32Type, &mut sharing as *mut _ as *mut _);

-            }

-            let mut layer: i32 = i32::MIN;

-            if CFDictionaryGetValueIfPresent(dict, layer_key as CFTypeRef, &mut v) {

-                CFNumberGetValue(v, kCFNumberSInt32Type, &mut layer as *mut _ as *mut _);

-            }

-            let mut alpha: f64 = -1.0;

-            if CFDictionaryGetValueIfPresent(dict, alpha_key as CFTypeRef, &mut v) {

-                CFNumberGetValue(v, 13 /* kCFNumberDoubleType */, &mut alpha as *mut _ as *mut _);

-            }

-            let on_screen_present =

-                CFDictionaryGetValueIfPresent(dict, on_screen_key as CFTypeRef, &mut v);

-

-            debug!(

-                "[probe_cg_window_info] wid={target_wid} cg_sharing={sharing} layer={layer} alpha={alpha:.3} on_screen_present={on_screen_present}"

-            );

-            found = true;

-            break;

-        }

-

-        if !found {

-            debug!("[probe_cg_window_info] wid={target_wid} NOT FOUND in CGWindowList");

-        }

-        CFRelease(list as CFTypeRef);

-    }

-}

-

-/// Draw a border ring into an existing CGContext, clearing first.

-fn draw_border(

-    ctx: CGContextRef,

-    width: f64,

-    height: f64,

-    border_width: f64,

-    radius: f64,

-    color: (f64, f64, f64, f64),

-) {

-    unsafe {

-        let full = CGRect::new(0.0, 0.0, width, height);

-        CGContextClearRect(ctx, full);

-

-        let bw = border_width;

-        let stroke_rect = CGRect::new(bw / 2.0, bw / 2.0, width - bw, height - bw);

-        let max_r = (stroke_rect.size.width.min(stroke_rect.size.height) / 2.0).max(0.0);

-        let r = radius.min(max_r);

-

-        CGContextSetRGBStrokeColor(ctx, color.0, color.1, color.2, color.3);

-        CGContextSetLineWidth(ctx, bw);

-        let path = CGPathCreateWithRoundedRect(stroke_rect, r, r, ptr::null());

-        if !path.is_null() {

-            CGContextAddPath(ctx, path);

-            CGContextStrokePath(ctx);

-            CGPathRelease(path);

-        }

-        CGContextFlush(ctx);

-    }

-}

-

-fn create_overlay(

-    cid: CGSConnectionID,

-    target_wid: u32,

-    border_width: f64,

-    radius: f64,

-    color: (f64, f64, f64, f64),

-) -> Option<(CGSConnectionID, u32, CGRect, f64)> {

-    unsafe {

-        let mut bounds = CGRect::default();

-        let rc = SLSGetWindowBounds(cid, target_wid, &mut bounds);

-        if rc != kCGErrorSuccess {

-            debug!("[create_overlay] SLSGetWindowBounds failed for wid={target_wid} rc={rc}");

-            return None;

-        }

-        if !is_trackable_window(bounds, border_width) {

-            debug!(

-                "[create_overlay] wid={target_wid} too small: {}x{}",

-                bounds.size.width, bounds.size.height

-            );

-            return None;

-        }

-

-        let bw = border_width;

-        let ow = bounds.size.width + 2.0 * bw;

-        let oh = bounds.size.height + 2.0 * bw;

-        let ox = bounds.origin.x - bw;

-        let oy = bounds.origin.y - bw;

-        let scale = display_scale_for_bounds(bounds);

-

-        let frame = CGRect::new(0.0, 0.0, ow, oh);

-        let mut region: CFTypeRef = ptr::null();

-        CGSNewRegionWithRect(&frame, &mut region);

-        if region.is_null() {

-            debug!("[create_overlay] CGSNewRegionWithRect failed for wid={target_wid}");

-            return None;

-        }

-

-        // Empty hit-test shape: an SLS window with an empty opaque_shape

-        // is click-through at the compositor level (no input region).

-        let empty = CGRect::new(0.0, 0.0, 0.0, 0.0);

-        let mut empty_region: CFTypeRef = ptr::null();

-        if CGSNewRegionWithRect(&empty, &mut empty_region) != kCGErrorSuccess

-            || empty_region.is_null()

-        {

-            debug!("[create_overlay] CGSNewRegionWithRect (empty) failed for wid={target_wid}");

-            CFRelease(region);

-            return None;

-        }

-

-        // Create the overlay via SLSNewWindowWithOpaqueShapeAndContext

-        // and bake tag bit 1 (click-through) and tag bit 9 (screenshot

-        // exclusion) into the window at birth. Tahoe classifies windows

-        // for capture/picker based on tags observed at creation time;

-        // post-creation tag mutation lands too late and the picker keeps

-        // including the overlay. Mirrors the JankyBorders unmanaged

-        // create path (.refs/JankyBorders/src/misc/window.h:239).

-        // options 13|(1<<18): documentation-window | ignores-cycle.

-        let mut tags: u64 = (1u64 << 1) | (1u64 << 9);

-        let mut wid: u32 = 0;

-        SLSNewWindowWithOpaqueShapeAndContext(

-            cid,

-            2,

-            region,

-            empty_region,

-            13 | (1 << 18),

-            &mut tags as *mut u64,

-            ox as f32,

-            oy as f32,

-            64,

-            &mut wid,

-            ptr::null_mut(),

-        );

-        CFRelease(region);

-        CFRelease(empty_region);

-        if wid == 0 {

-            debug!(

-                "[create_overlay] SLSNewWindowWithOpaqueShapeAndContext returned 0 for target={target_wid} cid={cid}"

-            );

-            return None;

-        }

-

-        debug!(

-            "[create_overlay] created overlay wid={wid} for target={target_wid} scale={scale:.2} color=({:.2},{:.2},{:.2},{:.2})",

-            color.0, color.1, color.2, color.3

-        );

-

-        if let Some(metadata) = query_window_metadata(cid, wid) {

-            debug!(

-                "[create_overlay] post-create overlay wid={wid} tags={:#x} attributes={:#x} parent={}",

-                metadata.tags, metadata.attributes, metadata.parent_wid

-            );

-        } else {

-            debug!("[create_overlay] post-create wid={wid} metadata query failed");

-        }

-

-        SLSSetWindowSharingState(cid, wid, 0);

-        let mut sharing_state: u32 = u32::MAX;

-        let rc = SLSGetWindowSharingState(cid, wid, &mut sharing_state);

-        debug!("[create_overlay] sharing_state wid={wid} get_rc={rc} sls_state={sharing_state}");

-

-        // Probe what CGWindowListCopyWindowInfo (which the screenshot

-        // picker / SCWindow use) reports for our overlay. If

-        // kCGWindowSharingState comes back != 0 here, then SLS-side

-        // sharing state is not propagated to the CG window list and

-        // we'll need a different exclusion mechanism.

-        probe_cg_window_info(wid);

-

-        SLSSetWindowResolution(cid, wid, scale);

-        SLSSetWindowOpacity(cid, wid, false);

-        SLSSetWindowLevel(cid, wid, 0);

-        SLSOrderWindow(cid, wid, 1, target_wid);

-

-        // Draw border (point coordinates)

-        let ctx = SLWindowContextCreate(cid, wid, ptr::null());

-        if ctx.is_null() {

-            debug!("[create_overlay] SLWindowContextCreate returned null for overlay wid={wid}");

-            SLSReleaseWindow(cid, wid);

-            return None;

-        }

-

-        draw_border(ctx, ow, oh, bw, radius, color);

-        SLSFlushWindowContentRegion(cid, wid, ptr::null());

-        CGContextRelease(ctx);

-

-        // Post-creation tag mutation matching JankyBorders' pattern

-        // at .refs/JankyBorders/src/misc/window.h:266-267. Verified

-        // ineffective on Tahoe: tags set on windows owned by a

-        // SLSNewConnection-created cid do NOT propagate to the global

-        // server-side tag store, regardless of which cid issues the

-        // SLSSetWindowTags call (tested both fresh and main cid).

-        // The screencaptureui picker queries via _CGSGetWindowTags

-        // from its own connection (otool confirmed) and reads 0x0 for

-        // our overlays. Kept here aligned with JB so the diff is

-        // legible; the actual fix requires creating overlays on the

-        // process main cid (conflicts with the per-border fresh-cid

-        // requirement in ers/CLAUDE.md) or backing them with NSWindow.

-        let mut set_tags: u64 = (1u64 << 1) | (1u64 << 9);

-        let mut clear_tags: u64 = 0;

-        SLSSetWindowTags(cid, wid, &mut set_tags as *mut u64, 64);

-        SLSClearWindowTags(cid, wid, &mut clear_tags as *mut u64, 64);

-

-        Some((cid, wid, bounds, scale))

-    }

-}

-

-use objc2::{ClassType, MainThreadMarker, MainThreadOnly, msg_send};

-    unsafe {

-        let main_id = objc2_core_graphics::CGMainDisplayID();

-        objc2_core_graphics::CGDisplayBounds(main_id).size.height

-    }

-    let cg_main_bounds = unsafe {

-        let clear = unsafe { NSColor::clearColor() };

-        unsafe { window.setBackgroundColor(Some(&clear)) };

-        let border_layer = unsafe { CAShapeLayer::new() };

-        let ok = (actual.origin.x - cocoa_frame.origin.x).abs() < 0.5

-        tracing::debug!(

-            cg_x = outer_cg.origin.x,

-            cg_y = outer_cg.origin.y,

-            cg_w = outer_cg.size.width,

-            cg_h = outer_cg.size.height,

-            cocoa_x = cocoa_frame.origin.x,

-            cocoa_y = cocoa_frame.origin.y,

-            actual_x = actual.origin.x,

-            actual_y = actual.origin.y,

-            actual_w = actual.size.width,

-            actual_h = actual.size.height,

-            placed_correctly = ok,

-            "set_bounds"

-        );

-

-    pub fn set_alpha(&self, alpha: f64) {

-        self.window.setAlphaValue(alpha);

-    }

-    unsafe { objc2_core_graphics::CGColor::new_srgb(rgba.0, rgba.1, rgba.2, rgba.3) }