Added: Allow users to adjust terminal horizontal and vertical margin

The `terminal-margin-horizontal` key can be used to adjust the terminal left/right margin and the `terminal-margin-vertical` can be used to adjust the terminal top/bottom margin. This will also affect drawer. The user can set an integer value between `0` and `100` as `dp` units. The default value is still `3` for horizontal and `0` for vertical margin. So adding an entry like `terminal-margin-horizontal=10` to `termux.properties` file will allow users to set a horizontal margin of `10dp`. After updating the value, either restart termux or run `termux-reload-settings` for changes to take effect.

This was added since for some users text on edges would not be shown on the screen or they had screen protectors/cases that covered screen edges (Of course, that would require fixing every single app and android system UI itself, so kinda stupid to use). Moreover, horizontal margin of like `10dp` may be helpful with peek-and-slide for people having gesture navigation enabled on android `10+` since they won't be to touch at exactly the edge of the screen to trigger peek (#1325).

Closes #2210

app/src/main/java/com/termux/app/TermuxActivity.java

@@ -29,6 +29,7 @@ import android.view.autofill.AutofillManager;
 import android.widget.EditText;
 import android.widget.ImageButton;
 import android.widget.ListView;
+import android.widget.RelativeLayout;
 import android.widget.Toast;
 
 import com.termux.R;
@@ -49,6 +50,7 @@ import com.termux.app.settings.properties.TermuxAppSharedProperties;
 import com.termux.shared.interact.TextInputDialogUtils;
 import com.termux.shared.logger.Logger;
 import com.termux.shared.termux.TermuxUtils;
+import com.termux.shared.view.ViewUtils;
 import com.termux.terminal.TerminalSession;
 import com.termux.terminal.TerminalSessionClient;
 import com.termux.app.utils.CrashUtils;
@@ -204,6 +206,8 @@ public final class TermuxActivity extends Activity implements ServiceConnection
             return;
         }
 
+        setMargins();
+
         mTermuxActivityRootView = findViewById(R.id.activity_termux_root_view);
         mTermuxActivityRootView.setActivity(this);
         mTermuxActivityBottomSpaceView = findViewById(R.id.activity_termux_bottom_space_view);
@@ -416,6 +420,13 @@ public final class TermuxActivity extends Activity implements ServiceConnection
         }
     }
 
+    private void setMargins() {
+        RelativeLayout relativeLayout = findViewById(R.id.activity_termux_root_relative_layout);
+        int marginHorizontal = mProperties.getTerminalMarginHorizontal();
+        int marginVertical = mProperties.getTerminalMarginVertical();
+        ViewUtils.setLayoutMarginsInDp(relativeLayout, marginHorizontal, marginVertical, marginHorizontal, marginVertical);
+    }
+
 
 
     public void addTermuxActivityRootViewGlobalLayoutListener() {
@@ -873,6 +884,7 @@ public final class TermuxActivity extends Activity implements ServiceConnection
             }
         }
 
+        setMargins();
         setTerminalToolbarHeight();
 
         if (mTermuxTerminalSessionClient != null)

app/src/main/res/layout/activity_termux.xml

@@ -6,9 +6,12 @@
     android:fitsSystemWindows="true">
 
     <RelativeLayout
+        android:id="@+id/activity_termux_root_relative_layout"
         android:layout_width="match_parent"
         android:layout_height="0dp"
         android:layout_weight="1"
+        android:layout_marginHorizontal="3dp"
+        android:layout_marginVertical="0dp"
         android:orientation="vertical">
 
         <androidx.drawerlayout.widget.DrawerLayout
@@ -22,8 +25,6 @@
                 android:id="@+id/terminal_view"
                 android:layout_width="match_parent"
                 android:layout_height="match_parent"
-                android:layout_marginRight="3dp"
-                android:layout_marginLeft="3dp"
                 android:focusableInTouchMode="true"
                 android:scrollbarThumbVertical="@drawable/terminal_scroll_shape"
                 android:scrollbars="vertical"