C++ refactoring (#91)

Tactility/Source/ui/LvglKeypad.cpp

@@ -0,0 +1,27 @@
+#include "LvglKeypad.h"
+
+namespace tt::lvgl {
+
+static lv_indev_t* keyboard_device = NULL;
+
+bool keypad_is_available() {
+    return keyboard_device != NULL;
+}
+
+void keypad_set_indev(lv_indev_t* device) {
+    keyboard_device = device;
+}
+
+void keypad_activate(lv_group_t* group) {
+    if (keyboard_device != NULL) {
+        lv_indev_set_group(keyboard_device, group);
+    }
+}
+
+void keypad_deactivate() {
+    if (keyboard_device != NULL) {
+        lv_indev_set_group(keyboard_device, NULL);
+    }
+}
+
+} // namespace