Fix issue where soft keyboard overlaps extra keys or terminal in some cases

Check TermuxActivityRootView javadocs for details.

termux-shared/src/main/java/com/termux/shared/view/KeyboardUtils.java

@@ -102,7 +102,7 @@ public class KeyboardUtils {
             activity.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);
     }
 
-    public static void setResizeTerminalViewForSoftKeyboardFlags(final Activity activity) {
+    public static void setSoftInputModeAdjustResize(final Activity activity) {
         // TODO: The flag is deprecated for API 30 and WindowInset API should be used
         // https://developer.android.com/reference/android/view/WindowManager.LayoutParams#SOFT_INPUT_ADJUST_RESIZE
         // https://medium.com/androiddevelopers/animating-your-keyboard-fb776a8fb66d

termux-shared/src/main/java/com/termux/shared/view/ViewUtils.java

@@ -0,0 +1,98 @@
+package com.termux.shared.view;
+
+import android.app.Activity;
+import android.content.Context;
+import android.content.ContextWrapper;
+import android.graphics.Rect;
+import android.util.TypedValue;
+import android.view.View;
+
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatActivity;
+
+public class ViewUtils {
+
+    /**
+     * Check if a {@link View} is fully visible and not hidden or partially covered by another view.
+     *
+     * https://stackoverflow.com/a/51078418/14686958
+     *
+     * @param view The {@link View} to check.
+     * @return Returns {@code true} if view is fully visible.
+     */
+    public static boolean isViewFullyVisible(View view) {
+        Rect[] windowAndViewRects = getWindowAndViewRects(view);
+        if (windowAndViewRects == null)
+            return false;
+        return windowAndViewRects[0].contains(windowAndViewRects[1]);
+    }
+
+    /**
+     * Get the {@link Rect} of a {@link View} and the  {@link Rect} of the window inside which it
+     * exists.
+     *
+     * https://stackoverflow.com/a/51078418/14686958
+     *
+     * @param view The {@link View} inside the window whose {@link Rect} to get.
+     * @return Returns {@link Rect[]} if view is visible where Rect[0] will contain window
+     * {@link Rect} and Rect[1] will contain view {@link Rect}. This will be {@code null}
+     * if view is not visible.
+     */
+    @Nullable
+    public static Rect[] getWindowAndViewRects(View view) {
+        if (view == null || !view.isShown())
+            return null;
+
+        // windowRect - will hold available area where content remain visible to users
+        // Takes into account screen decorations (e.g. statusbar)
+        Rect windowRect = new Rect();
+        view.getWindowVisibleDisplayFrame(windowRect);
+
+        // If there is actionbar, get his height
+        int actionBarHeight = 0;
+        Context context = view.getContext();
+        if (context instanceof AppCompatActivity) {
+            androidx.appcompat.app.ActionBar actionBar = ((AppCompatActivity) context).getSupportActionBar();
+            if (actionBar != null) actionBarHeight = actionBar.getHeight();
+        } else if (context instanceof Activity) {
+            android.app.ActionBar actionBar = ((Activity) context).getActionBar();
+            if (actionBar != null) actionBarHeight = actionBar.getHeight();
+        }
+
+        // windowAvailableRect - takes into account actionbar and statusbar height
+        Rect windowAvailableRect;
+        windowAvailableRect = new Rect(windowRect.left, windowRect.top + actionBarHeight, windowRect.right, windowRect.bottom);
+
+        // viewRect - holds position of the view in window
+        // (methods as getGlobalVisibleRect, getHitRect, getDrawingRect can return different result,
+        // when partialy visible)
+        Rect viewRect;
+        final int[] viewsLocationInWindow = new int[2];
+        view.getLocationInWindow(viewsLocationInWindow);
+        int viewLeft = viewsLocationInWindow[0];
+        int viewTop = viewsLocationInWindow[1];
+        int viewRight = viewLeft + view.getWidth();
+        int viewBottom = viewTop + view.getHeight();
+        viewRect = new Rect(viewLeft, viewTop, viewRight, viewBottom);
+
+        return new Rect[]{windowAvailableRect, viewRect};
+    }
+
+    /** Get the {@link Activity} associated with the {@link Context} if available. */
+    @Nullable
+    public static Activity getActivity(Context context) {
+        while (context instanceof ContextWrapper) {
+            if (context instanceof Activity) {
+                return (Activity)context;
+            }
+            context = ((ContextWrapper)context).getBaseContext();
+        }
+        return null;
+    }
+
+    /** Convert value in device independent pixels (dp) to pixels (px) units. */
+    public static int dpToPx(Context context, int dp) {
+        return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, context.getResources().getDisplayMetrics());
+    }
+
+}