Added the ability to change bar locations. (#257)

* Added the ability to change bar locations.

* Update dropdown margins

* Make dropdown to bar gap configurable and organized code.

modules/menus/shared/dropdown/locationHandler/index.ts

@@ -0,0 +1,95 @@
+const hyprland = await Service.import('hyprland');
+
+import { bash } from 'lib/utils';
+import { Widget as TWidget } from 'types/@girs/gtk-3.0/gtk-3.0.cjs';
+import { Monitor } from 'types/service/hyprland';
+import Box from 'types/widgets/box';
+import EventBox from 'types/widgets/eventbox';
+import Revealer from 'types/widgets/revealer';
+
+type NestedRevealer = Revealer<Box<TWidget, unknown>, unknown>;
+type NestedBox = Box<NestedRevealer, unknown>;
+type NestedEventBox = EventBox<NestedBox, unknown>;
+
+const { location } = options.theme.bar;
+
+export const moveBoxToCursor = <T extends NestedEventBox>(self: T, fixed: boolean): void => {
+    if (fixed) {
+        return;
+    }
+
+    globalMousePos.connect('changed', async ({ value }) => {
+        const curHyprlandMonitor = hyprland.monitors.find((m) => m.id === hyprland.active.monitor.id);
+        const dropdownWidth = self.child.get_allocation().width;
+        const dropdownHeight = self.child.get_allocation().height;
+
+        let hyprScaling = 1;
+        try {
+            const monitorInfo = await bash('hyprctl monitors -j');
+            const parsedMonitorInfo = JSON.parse(monitorInfo);
+
+            const foundMonitor = parsedMonitorInfo.find(
+                (monitor: Monitor) => monitor.id === hyprland.active.monitor.id,
+            );
+            hyprScaling = foundMonitor?.scale || 1;
+        } catch (error) {
+            console.error(`Error parsing hyprland monitors: ${error}`);
+        }
+
+        let monWidth = curHyprlandMonitor?.width;
+        let monHeight = curHyprlandMonitor?.height;
+
+        if (monWidth === undefined || monHeight === undefined || hyprScaling === undefined) {
+            return;
+        }
+
+        // If GDK Scaling is applied, then get divide width by scaling
+        // to get the proper coordinates.
+        // Ex: On a 2860px wide monitor... if scaling is set to 2, then the right
+        // end of the monitor is the 1430th pixel.
+        const gdkScale = Utils.exec('bash -c "echo $GDK_SCALE"');
+
+        if (/^\d+(.\d+)?$/.test(gdkScale)) {
+            const scale = parseFloat(gdkScale);
+            monWidth = monWidth / scale;
+            monHeight = monHeight / scale;
+        } else {
+            monWidth = monWidth / hyprScaling;
+            monHeight = monHeight / hyprScaling;
+        }
+
+        // If monitor is vertical (transform = 1 || 3) swap height and width
+        const isVertical = curHyprlandMonitor?.transform !== undefined ? curHyprlandMonitor.transform % 2 !== 0 : false;
+
+        if (isVertical) {
+            [monWidth, monHeight] = [monHeight, monWidth];
+        }
+
+        let marginRight = monWidth - dropdownWidth / 2;
+        marginRight = fixed ? marginRight - monWidth / 2 : marginRight - value[0];
+        let marginLeft = monWidth - dropdownWidth - marginRight;
+
+        const minimumMargin = 0;
+
+        if (marginRight < minimumMargin) {
+            marginRight = minimumMargin;
+            marginLeft = monWidth - dropdownWidth - minimumMargin;
+        }
+
+        if (marginLeft < minimumMargin) {
+            marginLeft = minimumMargin;
+            marginRight = monWidth - dropdownWidth - minimumMargin;
+        }
+
+        self.set_margin_left(marginLeft);
+        self.set_margin_right(marginRight);
+
+        if (location.value === 'top') {
+            self.set_margin_top(0);
+            self.set_margin_bottom(monHeight);
+        } else {
+            self.set_margin_bottom(0);
+            self.set_margin_top(monHeight - dropdownHeight);
+        }
+    });
+};