tts: toggle toolbar visibility on outside-click, instead of stopping TTS

Author: teleshoes

android/src/org/coolreader/crengine/TTSToolbarDlg.java

@@ -18,6 +18,7 @@
 import android.view.ViewGroup;
 import android.view.WindowManager;
 import android.widget.ImageButton;
+import android.widget.LinearLayout;
 import android.widget.PopupWindow;
 import android.widget.SeekBar;
 import android.widget.SeekBar.OnSeekBarChangeListener;
@@ -44,6 +45,8 @@ public class TTSToolbarDlg implements Settings {
 	private final PopupWindow mWindow;
 	private final CoolReader mCoolReader;
 	private final ReaderView mReaderView;
+	private final LinearLayout glassPanel;
+	private final LinearLayout toolbarBody;
 	private final TTSControlServiceAccessor mTTSControl;
 	private final ImageButton mPlayPauseButton;
 	private final TextView mVolumeTextView;
@@ -56,6 +59,7 @@ public class TTSToolbarDlg implements Settings {
 	private boolean mClosed;
 	private Selection mCurrentSelection;
 	private boolean isSpeaking;
+	private boolean isToolbarHidden;
 	private int mMotionTimeout;
 	private boolean mAutoSetDocLang;
 	private String mBookAuthors;
@@ -417,6 +421,14 @@ public TTSToolbarDlg(CoolReader coolReader, ReaderView readerView, TTSControlSer
 		LayoutInflater inflater = LayoutInflater.from(context);
 		View panel = inflater.inflate(R.layout.tts_toolbar, null);
 
+		glassPanel = panel.findViewById(R.id.tts_glass_panel);
+		toolbarBody = panel.findViewById(R.id.tts_toolbar_body);
+
+                glassPanel.setOnClickListener(v -> {
+                    isToolbarHidden = !isToolbarHidden;
+                    toolbarBody.setVisibility(isToolbarHidden ? View.INVISIBLE: View.VISIBLE);
+                });
+
 		mPlayPauseButton = panel.findViewById(R.id.tts_play_pause);
 		mPlayPauseButton.setImageResource(Utils.resolveResourceIdByAttr(mCoolReader, R.attr.ic_media_play_drawable, R.drawable.ic_media_play));
 		ImageButton backButton = panel.findViewById(R.id.tts_back);