Add composable to show tooltip

(with given string message)

Author: MHShetty

app/src/main/java/app/grapheneos/camera/ui/composable/components/QuickTooltip.kt

@@ -0,0 +1,79 @@
+package app.grapheneos.camera.ui.composable.components
+
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.PlainTooltip
+import androidx.compose.material3.Text
+import androidx.compose.material3.TooltipBox
+import androidx.compose.material3.rememberTooltipState
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.IntOffset
+import androidx.compose.ui.unit.IntRect
+import androidx.compose.ui.unit.IntSize
+import androidx.compose.ui.unit.LayoutDirection
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.compose.ui.window.PopupPositionProvider
+import kotlin.math.absoluteValue
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun QuickTooltip(
+    message: String,
+    tooltipAnchorVerticalSpacing: Float = 16.dp.toPx(),
+    content: @Composable () -> Unit,
+) {
+
+    TooltipBox (
+        positionProvider = remember {
+            object : PopupPositionProvider {
+                override fun calculatePosition(
+                    anchorBounds: IntRect,
+                    windowSize: IntSize,
+                    layoutDirection: LayoutDirection,
+                    popupContentSize: IntSize
+                ): IntOffset {
+
+                    val anchorPopWidthDiff = anchorBounds.width - popupContentSize.width
+
+                    val xOffset = if (anchorPopWidthDiff >= 0) {
+                        anchorBounds.left + anchorPopWidthDiff / 2
+                    } else if (
+                        (windowSize.width - anchorBounds.right >= anchorPopWidthDiff.absoluteValue / 2)
+                    ) {
+                        anchorBounds.left - anchorPopWidthDiff.absoluteValue / 2
+                    } else {
+                        anchorBounds.right - popupContentSize.width
+                    }.toInt()
+
+                    // Keep the tooltip below the view
+                    // (for use our case)
+                    //
+                    // Refer the source code of default implementation
+                    // if top based vertical offset is needed
+                    val yOffset = (anchorBounds.bottom + tooltipAnchorVerticalSpacing).toInt()
+
+                    return IntOffset(xOffset, yOffset)
+                }
+            }
+        },
+        tooltip = {
+            PlainTooltip {
+                Text(
+                    message,
+                    fontSize = 14.sp,
+                    modifier = Modifier
+                        .padding(
+                            vertical = 4.dp,
+                            horizontal = 2.dp,
+                        )
+                )
+            }
+
+        },
+        state = rememberTooltipState(),
+        content = content
+    )
+}