From a362dafee35e4330bd69d96cb182ed39694d74e9 Mon Sep 17 00:00:00 2001
From: lisyarus <lisyarus@gmail.com>
Date: Wed, 3 Mar 2021 12:18:26 +0300
Subject: [PATCH] Add app::ui_scene helper base class

---
 libs/app/CMakeLists.txt                  |  2 +-
 libs/app/include/psemek/app/ui_scene.hpp | 37 +++++++++++
 libs/app/source/ui_scene.cpp             | 85 ++++++++++++++++++++++++
 libs/ui/include/psemek/ui/label.hpp      |  3 +
 libs/ui/source/label.cpp                 |  4 ++
 5 files changed, 130 insertions(+), 1 deletion(-)
 create mode 100644 libs/app/include/psemek/app/ui_scene.hpp
 create mode 100644 libs/app/source/ui_scene.cpp

diff --git a/libs/app/CMakeLists.txt b/libs/app/CMakeLists.txt
index 12bce64a..dc682d6a 100644
--- a/libs/app/CMakeLists.txt
+++ b/libs/app/CMakeLists.txt
@@ -3,4 +3,4 @@ file(GLOB_RECURSE PSEMEK_APP_SOURCES RELATIVE "${CMAKE_CURRENT_SOURCE_DIR}" "sou
 
 psemek_add_library(psemek-app ${PSEMEK_APP_HEADERS} ${PSEMEK_APP_SOURCES})
 target_include_directories(psemek-app PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}/include")
-target_link_libraries(psemek-app PUBLIC psemek-log psemek-util psemek-gfx psemek-sdl2)
+target_link_libraries(psemek-app PUBLIC psemek-log psemek-util psemek-gfx psemek-ui psemek-sdl2)
diff --git a/libs/app/include/psemek/app/ui_scene.hpp b/libs/app/include/psemek/app/ui_scene.hpp
new file mode 100644
index 00000000..a77ade69
--- /dev/null
+++ b/libs/app/include/psemek/app/ui_scene.hpp
@@ -0,0 +1,37 @@
+#pragma once
+
+#include <psemek/app/scene.hpp>
+
+#include <psemek/ui/controller.hpp>
+
+namespace psemek::app
+{
+
+	struct ui_scene
+		: scene_base
+	{
+		ui_scene(ui::controller & controller);
+
+		void on_resize(int width, int height) override;
+
+		void on_mouse_move(int x, int y, int dx, int dy) override;
+		void on_mouse_wheel(int delta) override;
+		void on_left_button_down() override;
+		void on_left_button_up() override;
+		void on_middle_button_down() override;
+		void on_middle_button_up() override;
+		void on_right_button_down() override;
+		void on_right_button_up() override;
+
+		void on_key_down(SDL_Keycode key) override;
+		void on_key_up(SDL_Keycode key) override;
+
+		void present() override;
+
+		ui::controller & controller() const { return controller_; }
+
+	private:
+		ui::controller & controller_;
+	};
+
+}
diff --git a/libs/app/source/ui_scene.cpp b/libs/app/source/ui_scene.cpp
new file mode 100644
index 00000000..e22ddccd
--- /dev/null
+++ b/libs/app/source/ui_scene.cpp
@@ -0,0 +1,85 @@
+#include <psemek/app/ui_scene.hpp>
+
+namespace psemek::app
+{
+
+	ui_scene::ui_scene(ui::controller & controller)
+		: controller_(controller)
+	{}
+
+	void ui_scene::on_resize(int width, int height)
+	{
+		scene_base::on_resize(width, height);
+		controller_.reshape({{{0.f, width}, {0.f, height}}});
+	}
+
+	void ui_scene::on_mouse_move(int x, int y, int dx, int dy)
+	{
+		scene_base::on_mouse_move(x, y, dx, dy);
+		controller_.event(ui::mouse_move{{x, y}});
+	}
+
+	void ui_scene::on_mouse_wheel(int delta)
+	{
+		scene_base::on_mouse_wheel(delta);
+		controller_.event(ui::mouse_wheel{delta});
+	}
+
+	void ui_scene::on_left_button_down()
+	{
+		scene_base::on_left_button_down();
+		controller_.event(ui::mouse_click{ui::mouse_button::left, true});
+	}
+
+	void ui_scene::on_left_button_up()
+	{
+		scene_base::on_left_button_up();
+		controller_.event(ui::mouse_click{ui::mouse_button::left, false});
+	}
+
+	void ui_scene::on_middle_button_down()
+	{
+		scene_base::on_left_button_down();
+		controller_.event(ui::mouse_click{ui::mouse_button::middle, true});
+	}
+
+	void ui_scene::on_middle_button_up()
+	{
+		scene_base::on_left_button_down();
+		controller_.event(ui::mouse_click{ui::mouse_button::middle, false});
+	}
+
+	void ui_scene::on_right_button_down()
+	{
+		scene_base::on_right_button_down();
+		controller_.event(ui::mouse_click{ui::mouse_button::right, true});
+	}
+
+	void ui_scene::on_right_button_up()
+	{
+		scene_base::on_right_button_down();
+		controller_.event(ui::mouse_click{ui::mouse_button::right, false});
+	}
+
+	void ui_scene::on_key_down(SDL_Keycode key)
+	{
+		scene_base::on_key_down(key);
+		controller_.event(ui::key_press{key, true});
+	}
+
+	void ui_scene::on_key_up(SDL_Keycode key)
+	{
+		scene_base::on_key_down(key);
+		controller_.event(ui::key_press{key, false});
+	}
+
+	void ui_scene::present()
+	{
+		gfx::render_target rt;
+		rt.viewport = {{{0, width()}, {0, height()}}};
+		rt.framebuffer = &gfx::framebuffer::null();
+		rt.draw_buffer = gl::BACK_LEFT;
+		controller_.render(rt);
+	}
+
+}
diff --git a/libs/ui/include/psemek/ui/label.hpp b/libs/ui/include/psemek/ui/label.hpp
index c61ab154..a5364908 100644
--- a/libs/ui/include/psemek/ui/label.hpp
+++ b/libs/ui/include/psemek/ui/label.hpp
@@ -40,6 +40,9 @@ namespace psemek::ui
 			ellipsis,
 		};
 
+		label() = default;
+		explicit label(std::string text);
+
 		virtual void set_text(std::string text);
 		virtual std::string_view text() const { return text_; }
 
diff --git a/libs/ui/source/label.cpp b/libs/ui/source/label.cpp
index e2bedf6f..6cf555eb 100644
--- a/libs/ui/source/label.cpp
+++ b/libs/ui/source/label.cpp
@@ -6,6 +6,10 @@
 namespace psemek::ui
 {
 
+	label::label(std::string text)
+		: text_(std::move(text))
+	{}
+
 	void label::set_text(std::string text)
 	{
 		text_ = std::move(text);