Replaced file structures for themes in the correct format

1 files changed, 859 insertions, 0 deletions

diff --git a/raveos-hyprland-theme/theme-data/DankMaterialShell/core/internal/screenshot/region.go b/raveos-hyprland-theme/theme-data/DankMaterialShell/core/internal/screenshot/region.go
new file mode 100644
index 0000000..f296434
--- /dev/null
+++ b/raveos-hyprland-theme/theme-data/DankMaterialShell/core/internal/screenshot/region.go
@@ -0,0 +1,859 @@
+package screenshot
+
+import (
+	"fmt"
+	"sync"
+
+	"github.com/AvengeMedia/DankMaterialShell/core/internal/log"
+	"github.com/AvengeMedia/DankMaterialShell/core/internal/proto/keyboard_shortcuts_inhibit"
+	"github.com/AvengeMedia/DankMaterialShell/core/internal/proto/wlr_layer_shell"
+	"github.com/AvengeMedia/DankMaterialShell/core/internal/proto/wlr_screencopy"
+	"github.com/AvengeMedia/DankMaterialShell/core/internal/proto/wp_viewporter"
+	wlhelpers "github.com/AvengeMedia/DankMaterialShell/core/internal/wayland/client"
+	"github.com/AvengeMedia/DankMaterialShell/core/pkg/go-wayland/wayland/client"
+)
+
+type SelectionState struct {
+	hasSelection bool           // There's a selection to display (pre-loaded or user-drawn)
+	dragging     bool           // User is actively drawing a new selection
+	surface      *OutputSurface // Surface where selection was made
+	// Surface-local logical coordinates (from pointer events)
+	anchorX  float64
+	anchorY  float64
+	currentX float64
+	currentY float64
+}
+
+type RenderSlot struct {
+	shm   *ShmBuffer
+	pool  *client.ShmPool
+	wlBuf *client.Buffer
+	busy  bool
+}
+
+type OutputSurface struct {
+	output            *WaylandOutput
+	wlSurface         *client.Surface
+	layerSurf         *wlr_layer_shell.ZwlrLayerSurfaceV1
+	viewport          *wp_viewporter.WpViewport
+	screenBuf         *ShmBuffer
+	screenBufNoCursor *ShmBuffer
+	screenFormat      uint32
+	logicalW          int
+	logicalH          int
+	configured        bool
+	yInverted         bool
+
+	// Triple-buffered render slots
+	slots      [3]*RenderSlot
+	slotsReady bool
+}
+
+type PreCapture struct {
+	screenBuf         *ShmBuffer
+	screenBufNoCursor *ShmBuffer
+	format            uint32
+	yInverted         bool
+}
+
+type RegionSelector struct {
+	screenshoter *Screenshoter
+
+	display  *client.Display
+	registry *client.Registry
+	ctx      *client.Context
+
+	compositor *client.Compositor
+	shm        *client.Shm
+	seat       *client.Seat
+	pointer    *client.Pointer
+	keyboard   *client.Keyboard
+	layerShell *wlr_layer_shell.ZwlrLayerShellV1
+	screencopy *wlr_screencopy.ZwlrScreencopyManagerV1
+	viewporter *wp_viewporter.WpViewporter
+
+	shortcutsInhibitMgr *keyboard_shortcuts_inhibit.ZwpKeyboardShortcutsInhibitManagerV1
+	shortcutsInhibitor  *keyboard_shortcuts_inhibit.ZwpKeyboardShortcutsInhibitorV1
+
+	outputs    map[uint32]*WaylandOutput
+	outputsMu  sync.Mutex
+	preCapture map[*WaylandOutput]*PreCapture
+
+	surfaces      []*OutputSurface
+	activeSurface *OutputSurface
+
+	// Cursor surface for crosshair
+	cursorSurface *client.Surface
+	cursorBuffer  *ShmBuffer
+	cursorWlBuf   *client.Buffer
+	cursorPool    *client.ShmPool
+
+	selection          SelectionState
+	pointerX           float64
+	pointerY           float64
+	preSelect          Region
+	showCapturedCursor bool
+	shiftHeld          bool
+
+	running   bool
+	cancelled bool
+	result    Region
+
+	capturedBuffer *ShmBuffer
+	capturedRegion Region
+}
+
+func NewRegionSelector(s *Screenshoter) *RegionSelector {
+	return &RegionSelector{
+		screenshoter:       s,
+		outputs:            make(map[uint32]*WaylandOutput),
+		preCapture:         make(map[*WaylandOutput]*PreCapture),
+		showCapturedCursor: s.config.Cursor == CursorOn,
+	}
+}
+
+func (r *RegionSelector) Run() (*CaptureResult, bool, error) {
+	if r.screenshoter != nil && r.screenshoter.config.Reset {
+		r.preSelect = Region{}
+	} else {
+		r.preSelect = GetLastRegion()
+	}
+
+	if err := r.connect(); err != nil {
+		return nil, false, fmt.Errorf("wayland connect: %w", err)
+	}
+	defer r.cleanup()
+
+	if err := r.setupRegistry(); err != nil {
+		return nil, false, fmt.Errorf("registry setup: %w", err)
+	}
+
+	if err := r.roundtrip(); err != nil {
+		return nil, false, fmt.Errorf("roundtrip after registry: %w", err)
+	}
+
+	switch {
+	case r.screencopy == nil:
+		return nil, false, fmt.Errorf("compositor does not support wlr-screencopy-unstable-v1")
+	case r.layerShell == nil:
+		return nil, false, fmt.Errorf("compositor does not support wlr-layer-shell-unstable-v1")
+	case r.seat == nil:
+		return nil, false, fmt.Errorf("no seat available")
+	case r.compositor == nil:
+		return nil, false, fmt.Errorf("compositor not available")
+	case r.shm == nil:
+		return nil, false, fmt.Errorf("wl_shm not available")
+	case len(r.outputs) == 0:
+		return nil, false, fmt.Errorf("no outputs available")
+	}
+
+	if err := r.roundtrip(); err != nil {
+		return nil, false, fmt.Errorf("roundtrip after protocol check: %w", err)
+	}
+
+	if err := r.preCaptureAllOutputs(); err != nil {
+		return nil, false, fmt.Errorf("pre-capture: %w", err)
+	}
+
+	if err := r.createSurfaces(); err != nil {
+		return nil, false, fmt.Errorf("create surfaces: %w", err)
+	}
+
+	_ = r.createCursor()
+
+	if err := r.roundtrip(); err != nil {
+		return nil, false, fmt.Errorf("roundtrip after surfaces: %w", err)
+	}
+
+	r.running = true
+	for r.running {
+		if err := r.ctx.Dispatch(); err != nil {
+			return nil, false, fmt.Errorf("dispatch: %w", err)
+		}
+	}
+
+	if r.cancelled || r.capturedBuffer == nil {
+		return nil, r.cancelled, nil
+	}
+
+	yInverted := false
+	var format uint32
+	if r.selection.surface != nil {
+		yInverted = r.selection.surface.yInverted
+		format = r.selection.surface.screenFormat
+	}
+
+	return &CaptureResult{
+		Buffer:    r.capturedBuffer,
+		Region:    r.result,
+		YInverted: yInverted,
+		Format:    format,
+	}, false, nil
+}
+
+func (r *RegionSelector) connect() error {
+	display, err := client.Connect("")
+	if err != nil {
+		return err
+	}
+	r.display = display
+	r.ctx = display.Context()
+	return nil
+}
+
+func (r *RegionSelector) roundtrip() error {
+	return wlhelpers.Roundtrip(r.display, r.ctx)
+}
+
+func (r *RegionSelector) setupRegistry() error {
+	registry, err := r.display.GetRegistry()
+	if err != nil {
+		return err
+	}
+	r.registry = registry
+
+	registry.SetGlobalHandler(func(e client.RegistryGlobalEvent) {
+		r.handleGlobal(e)
+	})
+
+	registry.SetGlobalRemoveHandler(func(e client.RegistryGlobalRemoveEvent) {
+		r.outputsMu.Lock()
+		delete(r.outputs, e.Name)
+		r.outputsMu.Unlock()
+	})
+
+	return nil
+}
+
+func (r *RegionSelector) handleGlobal(e client.RegistryGlobalEvent) {
+	switch e.Interface {
+	case client.CompositorInterfaceName:
+		comp := client.NewCompositor(r.ctx)
+		if err := r.registry.Bind(e.Name, e.Interface, e.Version, comp); err == nil {
+			r.compositor = comp
+		}
+
+	case client.ShmInterfaceName:
+		shm := client.NewShm(r.ctx)
+		if err := r.registry.Bind(e.Name, e.Interface, e.Version, shm); err == nil {
+			r.shm = shm
+		}
+
+	case client.SeatInterfaceName:
+		seat := client.NewSeat(r.ctx)
+		if err := r.registry.Bind(e.Name, e.Interface, e.Version, seat); err == nil {
+			r.seat = seat
+			r.setupInput()
+		}
+
+	case client.OutputInterfaceName:
+		output := client.NewOutput(r.ctx)
+		version := e.Version
+		if version > 4 {
+			version = 4
+		}
+		if err := r.registry.Bind(e.Name, e.Interface, version, output); err == nil {
+			r.outputsMu.Lock()
+			r.outputs[e.Name] = &WaylandOutput{
+				wlOutput:        output,
+				globalName:      e.Name,
+				scale:           1,
+				fractionalScale: 1.0,
+			}
+			r.outputsMu.Unlock()
+			r.setupOutputHandlers(e.Name, output)
+		}
+
+	case wlr_layer_shell.ZwlrLayerShellV1InterfaceName:
+		ls := wlr_layer_shell.NewZwlrLayerShellV1(r.ctx)
+		version := e.Version
+		if version > 4 {
+			version = 4
+		}
+		if err := r.registry.Bind(e.Name, e.Interface, version, ls); err == nil {
+			r.layerShell = ls
+		}
+
+	case wlr_screencopy.ZwlrScreencopyManagerV1InterfaceName:
+		sc := wlr_screencopy.NewZwlrScreencopyManagerV1(r.ctx)
+		version := e.Version
+		if version > 3 {
+			version = 3
+		}
+		if err := r.registry.Bind(e.Name, e.Interface, version, sc); err == nil {
+			r.screencopy = sc
+		}
+
+	case wp_viewporter.WpViewporterInterfaceName:
+		vp := wp_viewporter.NewWpViewporter(r.ctx)
+		if err := r.registry.Bind(e.Name, e.Interface, e.Version, vp); err == nil {
+			r.viewporter = vp
+		}
+
+	case keyboard_shortcuts_inhibit.ZwpKeyboardShortcutsInhibitManagerV1InterfaceName:
+		mgr := keyboard_shortcuts_inhibit.NewZwpKeyboardShortcutsInhibitManagerV1(r.ctx)
+		if err := r.registry.Bind(e.Name, e.Interface, e.Version, mgr); err == nil {
+			r.shortcutsInhibitMgr = mgr
+		}
+	}
+}
+
+func (r *RegionSelector) setupOutputHandlers(name uint32, output *client.Output) {
+	output.SetGeometryHandler(func(e client.OutputGeometryEvent) {
+		r.outputsMu.Lock()
+		if o, ok := r.outputs[name]; ok {
+			o.x = e.X
+			o.y = e.Y
+			o.transform = int32(e.Transform)
+		}
+		r.outputsMu.Unlock()
+	})
+
+	output.SetModeHandler(func(e client.OutputModeEvent) {
+		if e.Flags&uint32(client.OutputModeCurrent) == 0 {
+			return
+		}
+		r.outputsMu.Lock()
+		if o, ok := r.outputs[name]; ok {
+			o.width = e.Width
+			o.height = e.Height
+		}
+		r.outputsMu.Unlock()
+	})
+
+	output.SetScaleHandler(func(e client.OutputScaleEvent) {
+		r.outputsMu.Lock()
+		if o, ok := r.outputs[name]; ok {
+			o.scale = e.Factor
+			o.fractionalScale = float64(e.Factor)
+		}
+		r.outputsMu.Unlock()
+	})
+
+	output.SetNameHandler(func(e client.OutputNameEvent) {
+		r.outputsMu.Lock()
+		if o, ok := r.outputs[name]; ok {
+			o.name = e.Name
+		}
+		r.outputsMu.Unlock()
+	})
+}
+
+func (r *RegionSelector) preCaptureAllOutputs() error {
+	r.outputsMu.Lock()
+	outputs := make([]*WaylandOutput, 0, len(r.outputs))
+	for _, o := range r.outputs {
+		outputs = append(outputs, o)
+	}
+	r.outputsMu.Unlock()
+
+	pending := len(outputs) * 2
+	done := make(chan struct{}, pending)
+
+	for _, output := range outputs {
+		pc := &PreCapture{}
+		r.preCapture[output] = pc
+
+		r.preCaptureOutput(output, pc, true, func() { done <- struct{}{} })
+		r.preCaptureOutput(output, pc, false, func() { done <- struct{}{} })
+	}
+
+	for i := 0; i < pending; i++ {
+		if err := r.ctx.Dispatch(); err != nil {
+			return err
+		}
+		select {
+		case <-done:
+		default:
+			i--
+		}
+	}
+	return nil
+}
+
+func (r *RegionSelector) preCaptureOutput(output *WaylandOutput, pc *PreCapture, withCursor bool, onReady func()) {
+	cursor := int32(0)
+	if withCursor {
+		cursor = 1
+	}
+
+	frame, err := r.screencopy.CaptureOutput(cursor, output.wlOutput)
+	if err != nil {
+		log.Error("screencopy capture failed", "err", err)
+		onReady()
+		return
+	}
+
+	var capturedBuf *ShmBuffer
+
+	var capturedFormat PixelFormat
+	frame.SetBufferHandler(func(e wlr_screencopy.ZwlrScreencopyFrameV1BufferEvent) {
+		capturedFormat = PixelFormat(e.Format)
+		bpp := capturedFormat.BytesPerPixel()
+		if int(e.Stride) < int(e.Width)*bpp {
+			log.Error("invalid stride from compositor", "stride", e.Stride, "width", e.Width, "bpp", bpp)
+			return
+		}
+		buf, err := CreateShmBuffer(int(e.Width), int(e.Height), int(e.Stride))
+		if err != nil {
+			log.Error("create screen buffer failed", "err", err)
+			return
+		}
+
+		capturedBuf = buf
+		buf.Format = capturedFormat
+
+		pool, err := r.shm.CreatePool(buf.Fd(), int32(buf.Size()))
+		if err != nil {
+			log.Error("create shm pool failed", "err", err)
+			return
+		}
+
+		wlBuf, err := pool.CreateBuffer(0, int32(buf.Width), int32(buf.Height), int32(buf.Stride), e.Format)
+		if err != nil {
+			log.Error("create wl_buffer failed", "err", err)
+			pool.Destroy()
+			return
+		}
+
+		if err := frame.Copy(wlBuf); err != nil {
+			log.Error("frame copy failed", "err", err)
+		}
+		pool.Destroy()
+	})
+
+	frame.SetFlagsHandler(func(e wlr_screencopy.ZwlrScreencopyFrameV1FlagsEvent) {
+		if withCursor {
+			pc.yInverted = (e.Flags & 1) != 0
+		}
+	})
+
+	frame.SetReadyHandler(func(e wlr_screencopy.ZwlrScreencopyFrameV1ReadyEvent) {
+		frame.Destroy()
+
+		if capturedBuf == nil {
+			onReady()
+			return
+		}
+
+		if capturedFormat.Is24Bit() {
+			converted, newFormat, err := capturedBuf.ConvertTo32Bit(capturedFormat)
+			if err != nil {
+				log.Error("convert 24-bit to 32-bit failed", "err", err)
+			} else if converted != capturedBuf {
+				capturedBuf.Close()
+				capturedBuf = converted
+				capturedFormat = newFormat
+			}
+		}
+
+		pc.format = uint32(capturedFormat)
+
+		if pc.yInverted {
+			capturedBuf.FlipVertical()
+			pc.yInverted = false
+		}
+
+		if output.transform != TransformNormal {
+			invTransform := InverseTransform(output.transform)
+			transformed, err := capturedBuf.ApplyTransform(invTransform)
+			if err != nil {
+				log.Error("apply transform failed", "err", err)
+			} else if transformed != capturedBuf {
+				capturedBuf.Close()
+				capturedBuf = transformed
+			}
+		}
+
+		if withCursor {
+			pc.screenBuf = capturedBuf
+		} else {
+			pc.screenBufNoCursor = capturedBuf
+		}
+
+		onReady()
+	})
+
+	frame.SetFailedHandler(func(e wlr_screencopy.ZwlrScreencopyFrameV1FailedEvent) {
+		log.Error("screencopy failed")
+		frame.Destroy()
+		onReady()
+	})
+}
+
+func (r *RegionSelector) createSurfaces() error {
+	r.outputsMu.Lock()
+	outputs := make([]*WaylandOutput, 0, len(r.outputs))
+	for _, o := range r.outputs {
+		outputs = append(outputs, o)
+	}
+	r.outputsMu.Unlock()
+
+	for _, output := range outputs {
+		os, err := r.createOutputSurface(output)
+		if err != nil {
+			return fmt.Errorf("output %s: %w", output.name, err)
+		}
+		r.surfaces = append(r.surfaces, os)
+	}
+
+	return nil
+}
+
+func (r *RegionSelector) createCursor() error {
+	const size = 24
+	const hotspot = size / 2
+
+	surface, err := r.compositor.CreateSurface()
+	if err != nil {
+		return fmt.Errorf("create cursor surface: %w", err)
+	}
+	r.cursorSurface = surface
+
+	buf, err := CreateShmBuffer(size, size, size*4)
+	if err != nil {
+		return fmt.Errorf("create cursor buffer: %w", err)
+	}
+	r.cursorBuffer = buf
+
+	// Draw crosshair
+	data := buf.Data()
+	for y := 0; y < size; y++ {
+		for x := 0; x < size; x++ {
+			off := (y*size + x) * 4
+			// Vertical line
+			if x >= hotspot-1 && x <= hotspot && y >= 2 && y < size-2 {
+				data[off+0] = 255 // B
+				data[off+1] = 255 // G
+				data[off+2] = 255 // R
+				data[off+3] = 255 // A
+				continue
+			}
+			// Horizontal line
+			if y >= hotspot-1 && y <= hotspot && x >= 2 && x < size-2 {
+				data[off+0] = 255
+				data[off+1] = 255
+				data[off+2] = 255
+				data[off+3] = 255
+				continue
+			}
+			// Transparent
+			data[off+0] = 0
+			data[off+1] = 0
+			data[off+2] = 0
+			data[off+3] = 0
+		}
+	}
+
+	pool, err := r.shm.CreatePool(buf.Fd(), int32(buf.Size()))
+	if err != nil {
+		return fmt.Errorf("create cursor pool: %w", err)
+	}
+	r.cursorPool = pool
+
+	wlBuf, err := pool.CreateBuffer(0, size, size, size*4, uint32(FormatARGB8888))
+	if err != nil {
+		return fmt.Errorf("create cursor wl_buffer: %w", err)
+	}
+	r.cursorWlBuf = wlBuf
+
+	if err := surface.Attach(wlBuf, 0, 0); err != nil {
+		return fmt.Errorf("attach cursor: %w", err)
+	}
+	if err := surface.Damage(0, 0, size, size); err != nil {
+		return fmt.Errorf("damage cursor: %w", err)
+	}
+	if err := surface.Commit(); err != nil {
+		return fmt.Errorf("commit cursor: %w", err)
+	}
+
+	return nil
+}
+
+func (r *RegionSelector) createOutputSurface(output *WaylandOutput) (*OutputSurface, error) {
+	surface, err := r.compositor.CreateSurface()
+	if err != nil {
+		return nil, fmt.Errorf("create surface: %w", err)
+	}
+
+	layerSurf, err := r.layerShell.GetLayerSurface(
+		surface,
+		output.wlOutput,
+		uint32(wlr_layer_shell.ZwlrLayerShellV1LayerOverlay),
+		"dms-screenshot",
+	)
+	if err != nil {
+		return nil, fmt.Errorf("get layer surface: %w", err)
+	}
+
+	os := &OutputSurface{
+		output:    output,
+		wlSurface: surface,
+		layerSurf: layerSurf,
+	}
+
+	if r.viewporter != nil {
+		vp, err := r.viewporter.GetViewport(surface)
+		if err == nil {
+			os.viewport = vp
+		}
+	}
+
+	if err := layerSurf.SetAnchor(
+		uint32(wlr_layer_shell.ZwlrLayerSurfaceV1AnchorTop) |
+			uint32(wlr_layer_shell.ZwlrLayerSurfaceV1AnchorBottom) |
+			uint32(wlr_layer_shell.ZwlrLayerSurfaceV1AnchorLeft) |
+			uint32(wlr_layer_shell.ZwlrLayerSurfaceV1AnchorRight),
+	); err != nil {
+		return nil, fmt.Errorf("set anchor: %w", err)
+	}
+	if err := layerSurf.SetExclusiveZone(-1); err != nil {
+		return nil, fmt.Errorf("set exclusive zone: %w", err)
+	}
+	if err := layerSurf.SetKeyboardInteractivity(uint32(wlr_layer_shell.ZwlrLayerSurfaceV1KeyboardInteractivityExclusive)); err != nil {
+		return nil, fmt.Errorf("set keyboard interactivity: %w", err)
+	}
+
+	layerSurf.SetConfigureHandler(func(e wlr_layer_shell.ZwlrLayerSurfaceV1ConfigureEvent) {
+		if err := layerSurf.AckConfigure(e.Serial); err != nil {
+			log.Error("ack configure failed", "err", err)
+			return
+		}
+		os.logicalW = int(e.Width)
+		os.logicalH = int(e.Height)
+		os.configured = true
+		r.captureForSurface(os)
+		r.ensureShortcutsInhibitor(os)
+	})
+
+	layerSurf.SetClosedHandler(func(e wlr_layer_shell.ZwlrLayerSurfaceV1ClosedEvent) {
+		r.running = false
+		r.cancelled = true
+	})
+
+	if err := surface.Commit(); err != nil {
+		return nil, fmt.Errorf("surface commit: %w", err)
+	}
+
+	return os, nil
+}
+
+func (r *RegionSelector) ensureShortcutsInhibitor(os *OutputSurface) {
+	if r.shortcutsInhibitMgr == nil || r.seat == nil || r.shortcutsInhibitor != nil {
+		return
+	}
+	inhibitor, err := r.shortcutsInhibitMgr.InhibitShortcuts(os.wlSurface, r.seat)
+	if err == nil {
+		r.shortcutsInhibitor = inhibitor
+	}
+}
+
+func (r *RegionSelector) captureForSurface(os *OutputSurface) {
+	pc := r.preCapture[os.output]
+	if pc == nil {
+		return
+	}
+
+	os.screenBuf = pc.screenBuf
+	os.screenBufNoCursor = pc.screenBufNoCursor
+	os.screenFormat = pc.format
+	os.yInverted = pc.yInverted
+
+	if os.logicalW > 0 && os.screenBuf != nil {
+		os.output.fractionalScale = float64(os.screenBuf.Width) / float64(os.logicalW)
+	}
+
+	r.initRenderBuffer(os)
+	r.applyPreSelection(os)
+	r.redrawSurface(os)
+}
+
+func (r *RegionSelector) initRenderBuffer(os *OutputSurface) {
+	if os.screenBuf == nil {
+		return
+	}
+
+	for i := 0; i < 3; i++ {
+		slot := &RenderSlot{}
+
+		buf, err := CreateShmBuffer(os.screenBuf.Width, os.screenBuf.Height, os.screenBuf.Stride)
+		if err != nil {
+			log.Error("create render slot buffer failed", "err", err)
+			return
+		}
+		slot.shm = buf
+
+		pool, err := r.shm.CreatePool(buf.Fd(), int32(buf.Size()))
+		if err != nil {
+			log.Error("create render slot pool failed", "err", err)
+			buf.Close()
+			return
+		}
+		slot.pool = pool
+
+		wlBuf, err := pool.CreateBuffer(0, int32(buf.Width), int32(buf.Height), int32(buf.Stride), os.screenFormat)
+		if err != nil {
+			log.Error("create render slot wl_buffer failed", "err", err)
+			pool.Destroy()
+			buf.Close()
+			return
+		}
+		slot.wlBuf = wlBuf
+
+		slotRef := slot
+		wlBuf.SetReleaseHandler(func(e client.BufferReleaseEvent) {
+			slotRef.busy = false
+		})
+
+		os.slots[i] = slot
+	}
+	os.slotsReady = true
+}
+
+func (os *OutputSurface) acquireFreeSlot() *RenderSlot {
+	for _, slot := range os.slots {
+		if slot != nil && !slot.busy {
+			return slot
+		}
+	}
+	return nil
+}
+
+func (r *RegionSelector) applyPreSelection(os *OutputSurface) {
+	if r.preSelect.IsEmpty() || os.screenBuf == nil || r.selection.hasSelection {
+		return
+	}
+
+	if r.preSelect.Output != "" && r.preSelect.Output != os.output.name {
+		return
+	}
+
+	scaleX := float64(os.logicalW) / float64(os.screenBuf.Width)
+	scaleY := float64(os.logicalH) / float64(os.screenBuf.Height)
+
+	x1 := float64(r.preSelect.X-os.output.x) * scaleX
+	y1 := float64(r.preSelect.Y-os.output.y) * scaleY
+	x2 := float64(r.preSelect.X-os.output.x+r.preSelect.Width) * scaleX
+	y2 := float64(r.preSelect.Y-os.output.y+r.preSelect.Height) * scaleY
+
+	r.selection.hasSelection = true
+	r.selection.dragging = false
+	r.selection.surface = os
+	r.selection.anchorX = x1
+	r.selection.anchorY = y1
+	r.selection.currentX = x2
+	r.selection.currentY = y2
+	r.activeSurface = os
+}
+
+func (r *RegionSelector) getSourceBuffer(os *OutputSurface) *ShmBuffer {
+	if !r.showCapturedCursor && os.screenBufNoCursor != nil {
+		return os.screenBufNoCursor
+	}
+	return os.screenBuf
+}
+
+func (r *RegionSelector) redrawSurface(os *OutputSurface) {
+	srcBuf := r.getSourceBuffer(os)
+	if srcBuf == nil || !os.slotsReady {
+		return
+	}
+
+	slot := os.acquireFreeSlot()
+	if slot == nil {
+		return
+	}
+
+	slot.shm.CopyFrom(srcBuf)
+
+	// Draw overlay (dimming + selection) into this slot
+	r.drawOverlay(os, slot.shm)
+
+	if os.viewport != nil {
+		_ = os.wlSurface.SetBufferScale(1)
+		_ = os.viewport.SetSource(0, 0, float64(slot.shm.Width), float64(slot.shm.Height))
+		_ = os.viewport.SetDestination(int32(os.logicalW), int32(os.logicalH))
+	} else {
+		bufferScale := os.output.scale
+		if bufferScale <= 0 {
+			bufferScale = 1
+		}
+		_ = os.wlSurface.SetBufferScale(bufferScale)
+	}
+
+	_ = os.wlSurface.Attach(slot.wlBuf, 0, 0)
+	_ = os.wlSurface.Damage(0, 0, int32(os.logicalW), int32(os.logicalH))
+	_ = os.wlSurface.Commit()
+
+	// Mark this slot as busy until compositor releases it
+	slot.busy = true
+}
+
+func (r *RegionSelector) cleanup() {
+	if r.cursorWlBuf != nil {
+		r.cursorWlBuf.Destroy()
+	}
+	if r.cursorPool != nil {
+		r.cursorPool.Destroy()
+	}
+	if r.cursorSurface != nil {
+		r.cursorSurface.Destroy()
+	}
+	if r.cursorBuffer != nil {
+		r.cursorBuffer.Close()
+	}
+
+	for _, os := range r.surfaces {
+		for _, slot := range os.slots {
+			if slot == nil {
+				continue
+			}
+			if slot.wlBuf != nil {
+				slot.wlBuf.Destroy()
+			}
+			if slot.pool != nil {
+				slot.pool.Destroy()
+			}
+			if slot.shm != nil {
+				slot.shm.Close()
+			}
+		}
+		if os.viewport != nil {
+			os.viewport.Destroy()
+		}
+		if os.layerSurf != nil {
+			os.layerSurf.Destroy()
+		}
+		if os.wlSurface != nil {
+			os.wlSurface.Destroy()
+		}
+		if os.screenBuf != nil {
+			os.screenBuf.Close()
+		}
+		if os.screenBufNoCursor != nil {
+			os.screenBufNoCursor.Close()
+		}
+	}
+
+	if r.shortcutsInhibitor != nil {
+		_ = r.shortcutsInhibitor.Destroy()
+	}
+	if r.shortcutsInhibitMgr != nil {
+		_ = r.shortcutsInhibitMgr.Destroy()
+	}
+	if r.viewporter != nil {
+		r.viewporter.Destroy()
+	}
+	if r.screencopy != nil {
+		r.screencopy.Destroy()
+	}
+	if r.pointer != nil {
+		r.pointer.Release()
+	}
+	if r.keyboard != nil {
+		r.keyboard.Release()
+	}
+	if r.display != nil {
+		r.ctx.Close()
+	}
+}