FloatingSearchBar

app/src/main/java/xyz/quaver/pupil/util/KeyboardManager.kt

@@ -0,0 +1,67 @@
+/*
+ *     Pupil, Hitomi.la viewer for Android
+ *     Copyright (C) 2021 tom5079
+ *
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License as published by
+ *     the Free Software Foundation, either version 3 of the License, or
+ *     (at your option) any later version.
+ *
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package xyz.quaver.pupil.util
+
+import android.app.Activity
+import android.content.Context
+import android.graphics.Rect
+import android.view.View
+import android.view.ViewTreeObserver
+
+//https://stackoverflow.com/questions/68389802/how-to-clear-textfield-focus-when-closing-the-keyboard-and-prevent-two-back-pres
+class KeyboardManager(context: Context) {
+    private val activity = context as Activity
+    private var keyboardDismissListener: KeyboardDismissListener? = null
+
+    private abstract class KeyboardDismissListener(
+        private val rootView: View,
+        private val onKeyboardDismiss: () -> Unit
+    ) : ViewTreeObserver.OnGlobalLayoutListener {
+        private var isKeyboardClosed: Boolean = false
+        override fun onGlobalLayout() {
+            val r = Rect()
+            rootView.getWindowVisibleDisplayFrame(r)
+            val screenHeight = rootView.rootView.height
+            val keypadHeight = screenHeight - r.bottom
+            if (keypadHeight > screenHeight * 0.15) {
+                // 0.15 ratio is right enough to determine keypad height.
+                isKeyboardClosed = false
+            } else if (!isKeyboardClosed) {
+                isKeyboardClosed = true
+                onKeyboardDismiss.invoke()
+            }
+        }
+    }
+
+    fun attachKeyboardDismissListener(onKeyboardDismiss: () -> Unit) {
+        val rootView = activity.findViewById<View>(android.R.id.content)
+        keyboardDismissListener = object : KeyboardDismissListener(rootView, onKeyboardDismiss) {}
+        keyboardDismissListener?.let {
+            rootView.viewTreeObserver.addOnGlobalLayoutListener(it)
+        }
+    }
+
+    fun release() {
+        val rootView = activity.findViewById<View>(android.R.id.content)
+        keyboardDismissListener?.let {
+            rootView.viewTreeObserver.removeOnGlobalLayoutListener(it)
+        }
+        keyboardDismissListener = null
+    }
+}

app/src/main/java/xyz/quaver/pupil/util/misc.kt

@@ -25,14 +25,18 @@ import android.graphics.BitmapFactory
 import android.graphics.BitmapRegionDecoder
 import android.view.MenuItem
 import android.view.View
-import androidx.compose.runtime.Composable
-import androidx.compose.runtime.remember
+import androidx.compose.runtime.*
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.composed
+import androidx.compose.ui.focus.onFocusEvent
 import androidx.compose.ui.geometry.Rect
 import androidx.compose.ui.geometry.Size
 import androidx.compose.ui.graphics.ImageBitmap
 import androidx.compose.ui.graphics.asImageBitmap
 import androidx.compose.ui.graphics.toAndroidRect
+import androidx.compose.ui.platform.LocalFocusManager
 import androidx.lifecycle.MutableLiveData
+import com.google.accompanist.insets.LocalWindowInsets
 import kotlinx.serialization.json.*
 import org.kodein.di.DIAware
 import org.kodein.di.DirectDIAware