C++ conversion (#80)

Converted project to C++

Tactility/Source/Services/Gui/Gui.h

@@ -0,0 +1,55 @@
+#pragma once
+
+#include "App.h"
+#include "ServiceManifest.h"
+#include "ViewPort.h"
+
+namespace tt::service::gui {
+
+typedef struct Gui Gui;
+
+/**
+ * Set the app viewport in the gui state and request the gui to draw it.
+ *
+ * @param app
+ * @param on_show
+ * @param on_hide
+ */
+void show_app(App app, ViewPortShowCallback on_show, ViewPortHideCallback on_hide);
+
+/**
+ * Hide the current app's viewport.
+ * Does not request a re-draw because after hiding the current app,
+ * we always show the previous app, and there is always at least 1 app running.
+ */
+void hide_app();
+
+/**
+ * Show the on-screen keyboard.
+ * @param textarea the textarea to focus the input for
+ */
+void keyboard_show(lv_obj_t* textarea);
+
+/**
+ * Hide the on-screen keyboard.
+ * Has no effect when the keyboard is not visible.
+ */
+void keyboard_hide();
+
+/**
+ * The on-screen keyboard is only shown when both of these conditions are true:
+ *  - there is no hardware keyboard
+ *  - TT_CONFIG_FORCE_ONSCREEN_KEYBOARD is set to true in tactility_config.h
+ * @return if we should show a on-screen keyboard for text input inside our apps
+ */
+bool keyboard_is_enabled();
+
+/**
+ * Glue code for the on-screen keyboard and the hardware keyboard:
+ *  - Attach automatic hide/show parameters for the on-screen keyboard.
+ *  - Registers the textarea to the default lv_group_t for hardware keyboards.
+ * @param textarea
+ */
+void keyboard_add_textarea(lv_obj_t* textarea);
+
+} // namespace