some fixes

src/pandroid/app/src/main/java/com/panda3ds/pandroid/app/GameActivity.java

@@ -24,13 +24,7 @@ import com.panda3ds.pandroid.view.PandaLayoutController;
 
 public class GameActivity extends BaseActivity {
 	private final DrawerFragment drawerFragment = new DrawerFragment();
-	private final AlberInputListener inputListener = new AlberInputListener(() -> {
+	private final AlberInputListener inputListener = new AlberInputListener(this::onBackPressed);
-		if (drawerFragment.isOpened()) {
-			drawerFragment.close();
-		} else {
-			drawerFragment.open();
-		}
-	});
 
 	@Override
 	protected void onCreate(@Nullable Bundle savedInstanceState) {
@@ -95,6 +89,8 @@ public class GameActivity extends BaseActivity {
 	public void onBackPressed() {
 		if (drawerFragment.isOpened()) {
 			drawerFragment.close();
+		} else {
+			drawerFragment.open();
 		}
 	}
 

src/pandroid/app/src/main/java/com/panda3ds/pandroid/app/editor/CodeEditorActivity.java

@@ -95,8 +95,6 @@ public class CodeEditorActivity extends BaseActivity {
         } else {
             findViewById(R.id.keybar).setVisibility(View.GONE);
         }
-
-        System.out.println(height + "/" + currentHeight);
     }
 
     private void setupReadOnlyEditor() {
@@ -131,7 +129,6 @@ public class CodeEditorActivity extends BaseActivity {
 
     @Override
     public boolean dispatchKeyEvent(KeyEvent event) {
-        System.out.println();
         if (event.getKeyCode() == KeyEvent.KEYCODE_TAB) {
             if (event.getAction() == KeyEvent.ACTION_UP) {
                 editor.insert(TAB_CONTENT);

src/pandroid/app/src/main/java/com/panda3ds/pandroid/view/code/BaseEditor.java

@@ -9,6 +9,7 @@ import android.graphics.Rect;
 import android.text.Editable;
 import android.text.Layout;
 import android.util.AttributeSet;
+import android.view.ViewTreeObserver;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
@@ -30,6 +31,8 @@ public class BaseEditor extends BasicTextEditor {
     private int visibleHeight;
     private int contentWidth;
     private Layout textLayout;
+    private int currentWidth = -1;
+    private int currentHeight = -1;
 
     private final char[] textBuffer = new char[1];
     protected final int[] colors = new int[256];
@@ -54,6 +57,15 @@ public class BaseEditor extends BasicTextEditor {
         EditorColors.obtainColorScheme(colors, getContext());
     }
 
+    @Override
+    protected void initialize() {
+        super.initialize();
+        getViewTreeObserver().addOnGlobalLayoutListener(() -> {
+            adjustScroll();
+            requireUpdate = true;
+        });
+    }
+
     @SuppressLint("MissingSuperCall")
     @Override
     public void draw(Canvas canvas) {
@@ -280,6 +292,16 @@ public class BaseEditor extends BasicTextEditor {
     protected void onRefreshColorScheme(byte[] buffer, int index, int length) {
     }
 
+    @Override
+    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+        if (currentWidth != getMeasuredWidth() || currentHeight != getMeasuredHeight()) {
+            currentWidth = getMeasuredWidth();
+            currentHeight = getMeasuredHeight();
+            invalidateAll();
+        }
+    }
+
     protected void invalidateAll() {
         requireUpdate = true;
         invalidate();

src/pandroid/app/src/main/java/com/panda3ds/pandroid/view/code/BasicTextEditor.java

@@ -25,6 +25,7 @@ import com.panda3ds.pandroid.view.SimpleTextWatcher;
 
 public class BasicTextEditor extends AppCompatEditText {
     private GestureDetector gestureDetector;
+    private final Rect visibleRect = new Rect();
 
     public BasicTextEditor(@NonNull Context context) {
         super(context);
@@ -79,7 +80,24 @@ public class BasicTextEditor extends AppCompatEditText {
     }
 
     public void setScroll(int x, int y) {
-        super.scrollTo(x, y);
+        x = Math.max(0, x);
+        y = Math.max(0, y);
+
+        int maxHeight = Math.round(getLineCount() * getLineHeight());
+        getGlobalVisibleRect(visibleRect);
+        maxHeight = Math.max(0, maxHeight - visibleRect.height());
+
+        int maxWidth = (int) getPaint().measureText(getText(), 0, length());
+        maxWidth += getPaddingLeft() + getPaddingRight();
+
+        int scrollX = x - Math.max(Math.min(maxWidth - visibleRect.width(), x), 0);
+        int scrollY = Math.min(maxHeight, y);
+
+        super.scrollTo(scrollX, scrollY);
+    }
+
+    public void adjustScroll(){
+        setScroll(getScrollX(), getScrollY());
     }
 
     protected void onTextChanged() {
@@ -96,8 +114,6 @@ public class BasicTextEditor extends AppCompatEditText {
     }
 
     private class ScrollGesture implements GestureDetector.OnGestureListener {
-        private final Rect visibleRect = new Rect();
-
         @Override
         public boolean onDown(@NonNull MotionEvent e) {
             return true;
@@ -117,16 +133,7 @@ public class BasicTextEditor extends AppCompatEditText {
         public boolean onScroll(@NonNull MotionEvent e1, @NonNull MotionEvent e2, float distanceX, float distanceY) {
             int scrollX = (int) Math.max(0, getScrollX() + distanceX);
             int scrollY = (int) Math.max(0, getScrollY() + distanceY);
-            int maxHeight = Math.round(getLineCount() * getLineHeight());
+            setScroll(scrollX, scrollY);
-            getGlobalVisibleRect(visibleRect);
-            maxHeight = Math.max(0, maxHeight - visibleRect.height());
-
-            int maxWidth = (int) getPaint().measureText(getText(), 0, length());
-            maxWidth += getPaddingLeft() + getPaddingRight();
-
-            scrollX = Math.max(Math.min(maxWidth - visibleRect.width(), scrollX), 0);
-
-            setScroll(scrollX, Math.min(maxHeight, scrollY));
             return true;
         }