main pane splitting

src/main/java/com/gregor/jprototerm/AppConfig.java

@@ -36,7 +36,7 @@ public record AppConfig(
             "navigate_up",
             "navigate_right",
             "toggle_floating",
-            "new_floating",
+            "new_pane",
             "next_floating",
             "close_pane",
             "open_font_selector",
@@ -92,7 +92,7 @@ public record AppConfig(
                         "navigate_up", KeyBinding.parse("ALT+K"),
                         "navigate_right", KeyBinding.parse("ALT+L"),
                         "toggle_floating", KeyBinding.parse("ALT+F"),
-                        "new_floating", KeyBinding.parse("ALT+SHIFT+F"),
+                        "new_pane", KeyBinding.parse("ALT+N"),
                         "next_floating", KeyBinding.parse("ALT+F12"),
                         "close_pane", KeyBinding.parse("ALT+X"),
                         "open_font_selector", KeyBinding.parse("ALT+T"),

src/main/java/com/gregor/jprototerm/Main.java

@@ -71,8 +71,8 @@ public final class Main extends Application {
         } else if (config.keybindings().get("toggle_floating").matches(event)) {
             workspace.toggleFloating();
             event.consume();
-        } else if (config.keybindings().get("new_floating").matches(event)) {
-            workspace.createFloatingPane();
+        } else if (config.keybindings().get("new_pane").matches(event)) {
+            workspace.createPane();
             event.consume();
         } else if (config.keybindings().get("next_floating").matches(event)) {
             workspace.nextFloatingPane();

src/main/java/com/gregor/jprototerm/TerminalWorkspace.java

@@ -131,6 +131,25 @@ public final class TerminalWorkspace implements AutoCloseable {
         version++;
     }
 
+    /**
+     * "New pane": adds a floating pane while floating panes are shown, otherwise adds a
+     * tiled pane (the tiled row is redistributed equally by the layout).
+     */
+    public void createPane() {
+        if (anyFloatingVisible()) {
+            createFloatingPane();
+        } else {
+            TerminalPane pane = openPane(false);
+            panes.add(pane);
+            activeIndex = panes.size() - 1;
+            version++;
+        }
+    }
+
+    private boolean anyFloatingVisible() {
+        return panes.stream().anyMatch(pane -> pane.floating() && pane.visible());
+    }
+
     public void nextFloatingPane() {
         TerminalPane next = nextFloatingAfter(activeIndex);
         next.setVisible(true);