Fix the screen size for the slider

Author: bjarneo

frontend/src/lib/components/slider/WallpaperSlider.svelte

@@ -195,17 +195,9 @@
         document.documentElement.classList.add('transparent-widget');
 
         try {
-            const {WindowShow, WindowSetSize, WindowSetPosition, ScreenGetAll} =
-                await import('../../../../wailsjs/runtime/runtime');
-            const screens = await ScreenGetAll();
-            const current =
-                screens.find(s => s.isCurrent) ??
-                screens.find(s => s.isPrimary) ??
-                screens[0];
-            if (current) {
-                WindowSetSize(current.width, current.height);
-                WindowSetPosition(0, 0);
-            }
+            const {WindowShow} = await import(
+                '../../../../wailsjs/runtime/runtime'
+            );
             WindowShow();
             requestAnimationFrame(() => {
                 ready = true;

internal/platform/exec.go

@@ -75,6 +75,15 @@ func SetupOverlayWindow(appClass string) {
 	exec.Command("hyprctl", "--batch", strings.Join(batch, " ; ")).Run()
 }
 
+// MonitorSize returns the effective (scaled) pixel dimensions of the focused
+// monitor. On Hyprland it queries hyprctl; elsewhere it falls back to 1920x1080.
+func MonitorSize() (int, int) {
+	if os.Getenv("HYPRLAND_INSTANCE_SIGNATURE") == "" {
+		return 1920, 1080
+	}
+	return hyprlandMonitorSize()
+}
+
 // hyprlandMonitorSize returns the effective (scaled) pixel dimensions of the
 // focused monitor via hyprctl.
 func hyprlandMonitorSize() (int, int) {

main.go

@@ -78,7 +78,7 @@ func main() {
 		title = "Aether Slider"
 		frameless = true
 		alwaysOnTop = true
-		width, height = 0, 0
+		width, height = platform.MonitorSize()
 	}
 
 	isSliderMode := sliderWidget || themesSlider