From 3856fdd82729e5ba5795ce9cba2e887215166bd5 Mon Sep 17 00:00:00 2001
From: lisyarus <lisyarus@gmail.com>
Date: Mon, 29 Jul 2024 13:24:14 +0300
Subject: [PATCH] UI library wip: implement frame, extend & move

---
 libs/ui/include/psemek/ui/extend.hpp          | 19 ++++++
 libs/ui/include/psemek/ui/frame.hpp           |  1 +
 .../ui/include/psemek/ui/impl/extend_base.hpp | 32 +++++++++
 libs/ui/include/psemek/ui/impl/frame_base.hpp | 29 ++++++++
 libs/ui/include/psemek/ui/impl/move_base.hpp  | 29 ++++++++
 libs/ui/include/psemek/ui/move.hpp            | 17 +++++
 .../source/impl/default_component_factory.cpp |  6 ++
 libs/ui/source/impl/extend_base.cpp           | 67 +++++++++++++++++++
 libs/ui/source/impl/frame_base.cpp            | 62 +++++++++++++++++
 libs/ui/source/impl/move_base.cpp             | 57 ++++++++++++++++
 10 files changed, 319 insertions(+)
 create mode 100644 libs/ui/include/psemek/ui/extend.hpp
 create mode 100644 libs/ui/include/psemek/ui/impl/extend_base.hpp
 create mode 100644 libs/ui/include/psemek/ui/impl/frame_base.hpp
 create mode 100644 libs/ui/include/psemek/ui/impl/move_base.hpp
 create mode 100644 libs/ui/include/psemek/ui/move.hpp
 create mode 100644 libs/ui/source/impl/extend_base.cpp
 create mode 100644 libs/ui/source/impl/frame_base.cpp
 create mode 100644 libs/ui/source/impl/move_base.cpp

diff --git a/libs/ui/include/psemek/ui/extend.hpp b/libs/ui/include/psemek/ui/extend.hpp
new file mode 100644
index 00000000..cb4eb1d2
--- /dev/null
+++ b/libs/ui/include/psemek/ui/extend.hpp
@@ -0,0 +1,19 @@
+#pragma once
+
+#include <psemek/react/value.hpp>
+
+#include <any>
+
+namespace psemek::ui
+{
+
+	struct extend
+	{
+		react::value<std::any> child = {};
+		react::value<float> left = 0.f;
+		react::value<float> right = 0.f;
+		react::value<float> top = 0.f;
+		react::value<float> bottom = 0.f;
+	};
+
+}
diff --git a/libs/ui/include/psemek/ui/frame.hpp b/libs/ui/include/psemek/ui/frame.hpp
index 17d10050..798ce907 100644
--- a/libs/ui/include/psemek/ui/frame.hpp
+++ b/libs/ui/include/psemek/ui/frame.hpp
@@ -10,6 +10,7 @@ namespace psemek::ui
 	struct frame
 	{
 		react::value<std::any> child = {};
+		react::value<float> margin = 0.f;
 	};
 
 }
diff --git a/libs/ui/include/psemek/ui/impl/extend_base.hpp b/libs/ui/include/psemek/ui/impl/extend_base.hpp
new file mode 100644
index 00000000..264236de
--- /dev/null
+++ b/libs/ui/include/psemek/ui/impl/extend_base.hpp
@@ -0,0 +1,32 @@
+#pragma once
+
+#include <psemek/ui/extend.hpp>
+#include <psemek/ui/impl/single_container.hpp>
+#include <psemek/react/source.hpp>
+
+namespace psemek::ui::impl
+{
+
+	struct extend_base
+		: single_container
+	{
+		extend_base();
+
+		void reshape(geom::box<float, 2> const & new_shape) override;
+		react::value<struct size_constraints> size_constraints() const override;
+
+		void set_child(std::unique_ptr<component> child) override;
+		std::unique_ptr<component> release_child() override;
+
+		void update(extend const & value);
+
+	private:
+		react::source<react::value<float>> left_;
+		react::source<react::value<float>> right_;
+		react::source<react::value<float>> top_;
+		react::source<react::value<float>> bottom_;
+		react::source<react::value<struct size_constraints>> child_size_constraints_;
+		react::value<struct size_constraints> size_constraints_;
+	};
+
+}
diff --git a/libs/ui/include/psemek/ui/impl/frame_base.hpp b/libs/ui/include/psemek/ui/impl/frame_base.hpp
new file mode 100644
index 00000000..9047c590
--- /dev/null
+++ b/libs/ui/include/psemek/ui/impl/frame_base.hpp
@@ -0,0 +1,29 @@
+#pragma once
+
+#include <psemek/ui/frame.hpp>
+#include <psemek/ui/impl/single_container.hpp>
+#include <psemek/react/source.hpp>
+
+namespace psemek::ui::impl
+{
+
+	struct frame_base
+		: single_container
+	{
+		frame_base();
+
+		void reshape(geom::box<float, 2> const & new_shape) override;
+		react::value<struct size_constraints> size_constraints() const override;
+
+		void set_child(std::unique_ptr<component> child) override;
+		std::unique_ptr<component> release_child() override;
+
+		void update(frame const & value);
+
+	private:
+		react::source<react::value<float>> margin_;
+		react::source<react::value<struct size_constraints>> child_size_constraints_;
+		react::value<struct size_constraints> size_constraints_;
+	};
+
+}
diff --git a/libs/ui/include/psemek/ui/impl/move_base.hpp b/libs/ui/include/psemek/ui/impl/move_base.hpp
new file mode 100644
index 00000000..023eafb9
--- /dev/null
+++ b/libs/ui/include/psemek/ui/impl/move_base.hpp
@@ -0,0 +1,29 @@
+#pragma once
+
+#include <psemek/ui/move.hpp>
+#include <psemek/ui/impl/single_container.hpp>
+#include <psemek/react/source.hpp>
+
+namespace psemek::ui::impl
+{
+
+	struct move_base
+		: single_container
+	{
+		move_base();
+
+		void reshape(geom::box<float, 2> const & new_shape) override;
+		react::value<struct size_constraints> size_constraints() const override;
+
+		void set_child(std::unique_ptr<component> child) override;
+		std::unique_ptr<component> release_child() override;
+
+		void update(move const & value);
+
+	private:
+		react::source<react::value<geom::vector<float, 2>>> offset_;
+		react::source<react::value<struct size_constraints>> child_size_constraints_;
+		react::value<struct size_constraints> size_constraints_;
+	};
+
+}
diff --git a/libs/ui/include/psemek/ui/move.hpp b/libs/ui/include/psemek/ui/move.hpp
new file mode 100644
index 00000000..bfc71df5
--- /dev/null
+++ b/libs/ui/include/psemek/ui/move.hpp
@@ -0,0 +1,17 @@
+#pragma once
+
+#include <psemek/react/value.hpp>
+#include <psemek/geom/vector.hpp>
+
+#include <any>
+
+namespace psemek::ui
+{
+
+	struct move
+	{
+		react::value<std::any> child = {};
+		react::value<geom::vector<float, 2>> offset = geom::vector{0.f, 0.f};
+	};
+
+}
diff --git a/libs/ui/source/impl/default_component_factory.cpp b/libs/ui/source/impl/default_component_factory.cpp
index 9f883e85..8e45e730 100644
--- a/libs/ui/source/impl/default_component_factory.cpp
+++ b/libs/ui/source/impl/default_component_factory.cpp
@@ -8,6 +8,9 @@
 #include <psemek/ui/impl/box_layout_base.hpp>
 #include <psemek/ui/impl/aligned_base.hpp>
 #include <psemek/ui/impl/fixed_size_base.hpp>
+#include <psemek/ui/impl/frame_base.hpp>
+#include <psemek/ui/impl/extend_base.hpp>
+#include <psemek/ui/impl/move_base.hpp>
 #include <psemek/ui/impl/button_base.hpp>
 
 namespace psemek::ui::impl
@@ -22,6 +25,9 @@ namespace psemek::ui::impl
 		register_type<fixed_size, impl::fixed_size_base>();
 		register_type<fixed_width, impl::fixed_size_base>();
 		register_type<fixed_height, impl::fixed_size_base>();
+		register_type<frame, impl::frame_base>();
+		register_type<extend, impl::extend_base>();
+		register_type<move, impl::move_base>();
 		register_type<button, impl::button_base>();
 	}
 
diff --git a/libs/ui/source/impl/extend_base.cpp b/libs/ui/source/impl/extend_base.cpp
new file mode 100644
index 00000000..4b761397
--- /dev/null
+++ b/libs/ui/source/impl/extend_base.cpp
@@ -0,0 +1,67 @@
+#include <psemek/ui/impl/extend_base.hpp>
+#include <psemek/react/join.hpp>
+#include <psemek/react/map.hpp>
+
+namespace psemek::ui::impl
+{
+
+	namespace
+	{
+
+		geom::box<float, 2> compute_child_shape(geom::box<float, 2> shape, float left, float right, float top, float bottom)
+		{
+			shape[0].min -= left;
+			shape[0].max += right;
+			shape[1].min -= top;
+			shape[1].max += bottom;
+			return shape;
+		}
+
+	}
+
+	extend_base::extend_base()
+		: left_(0.f)
+		, right_(0.f)
+		, top_(0.f)
+		, bottom_(0.f)
+		, child_size_constraints_(size_constraints::max())
+		, size_constraints_(react::join(child_size_constraints_))
+	{}
+
+	void extend_base::reshape(geom::box<float, 2> const & new_shape)
+	{
+		single_container::reshape(new_shape);
+
+		if (auto child = this->child())
+			child->reshape(compute_child_shape(new_shape, **left_, **right_, **top_, **bottom_));
+	}
+
+	react::value<struct size_constraints> extend_base::size_constraints() const
+	{
+		return size_constraints_;
+	}
+
+	void extend_base::set_child(std::unique_ptr<component> child)
+	{
+		if (child)
+			child_size_constraints_.set(child->size_constraints());
+		else
+			child_size_constraints_.set(size_constraints::max());
+		single_container::set_child(std::move(child));
+	}
+
+	std::unique_ptr<component> extend_base::release_child()
+	{
+		child_size_constraints_.set(size_constraints::max());
+		return single_container::release_child();
+	}
+
+	void extend_base::update(extend const & value)
+	{
+		left_.set(value.left);
+		right_.set(value.right);
+		top_.set(value.top);
+		bottom_.set(value.bottom);
+	}
+
+}
diff --git a/libs/ui/source/impl/frame_base.cpp b/libs/ui/source/impl/frame_base.cpp
new file mode 100644
index 00000000..69afa241
--- /dev/null
+++ b/libs/ui/source/impl/frame_base.cpp
@@ -0,0 +1,62 @@
+#include <psemek/ui/impl/frame_base.hpp>
+#include <psemek/react/join.hpp>
+#include <psemek/react/map.hpp>
+
+namespace psemek::ui::impl
+{
+
+	namespace
+	{
+
+		size_constraints compute_size_constraints(size_constraints const & child_size_constraints, float margin)
+		{
+			return { child_size_constraints.box + geom::vector{2.f * margin, 2.f * margin} };
+		}
+
+		geom::box<float, 2> compute_child_shape(geom::box<float, 2> const & shape, float margin)
+		{
+			return geom::expand(shape, -margin);
+		}
+
+	}
+
+	frame_base::frame_base()
+		: margin_(0.f)
+		, child_size_constraints_(size_constraints::max())
+		, size_constraints_(react::map(compute_size_constraints, react::join(child_size_constraints_), react::join(margin_)))
+	{}
+
+	void frame_base::reshape(geom::box<float, 2> const & new_shape)
+	{
+		single_container::reshape(new_shape);
+
+		if (auto child = this->child())
+			child->reshape(compute_child_shape(new_shape, **margin_));
+	}
+
+	react::value<struct size_constraints> frame_base::size_constraints() const
+	{
+		return size_constraints_;
+	}
+
+	void frame_base::set_child(std::unique_ptr<component> child)
+	{
+		if (child)
+			child_size_constraints_.set(child->size_constraints());
+		else
+			child_size_constraints_.set(size_constraints::max());
+		single_container::set_child(std::move(child));
+	}
+
+	std::unique_ptr<component> frame_base::release_child()
+	{
+		child_size_constraints_.set(size_constraints::max());
+		return single_container::release_child();
+	}
+
+	void frame_base::update(frame const & value)
+	{
+		margin_.set(value.margin);
+	}
+
+}
diff --git a/libs/ui/source/impl/move_base.cpp b/libs/ui/source/impl/move_base.cpp
new file mode 100644
index 00000000..8bbe8ab0
--- /dev/null
+++ b/libs/ui/source/impl/move_base.cpp
@@ -0,0 +1,57 @@
+#include <psemek/ui/impl/move_base.hpp>
+#include <psemek/react/join.hpp>
+#include <psemek/react/map.hpp>
+
+namespace psemek::ui::impl
+{
+
+	namespace
+	{
+
+		geom::box<float, 2> compute_child_shape(geom::box<float, 2> const & shape, geom::vector<float, 2> const & offset)
+		{
+			return shape + offset;
+		}
+
+	}
+
+	move_base::move_base()
+		: offset_({0.f, 0.f})
+		, child_size_constraints_(size_constraints::max())
+		, size_constraints_(react::join(child_size_constraints_))
+	{}
+
+	void move_base::reshape(geom::box<float, 2> const & new_shape)
+	{
+		single_container::reshape(new_shape);
+
+		if (auto child = this->child())
+			child->reshape(compute_child_shape(new_shape, **offset_));
+	}
+
+	react::value<struct size_constraints> move_base::size_constraints() const
+	{
+		return size_constraints_;
+	}
+
+	void move_base::set_child(std::unique_ptr<component> child)
+	{
+		if (child)
+			child_size_constraints_.set(child->size_constraints());
+		else
+			child_size_constraints_.set(size_constraints::max());
+		single_container::set_child(std::move(child));
+	}
+
+	std::unique_ptr<component> move_base::release_child()
+	{
+		child_size_constraints_.set(size_constraints::max());
+		return single_container::release_child();
+	}
+
+	void move_base::update(move const & value)
+	{
+		offset_.set(value.offset);
+	}
+
+}