Add ui::progress_bar

libs/ui/include/psemek/ui/element_factory.hpp

@@ -14,6 +14,7 @@
 #include <psemek/ui/slider.hpp>
 #include <psemek/ui/spinbox.hpp>
 #include <psemek/ui/scroller.hpp>
+#include <psemek/ui/progress_bar.hpp>
 
 #include <psemek/gfx/texture.hpp>
 
@@ -45,6 +46,7 @@ namespace psemek::ui
 		// 3 - right
 		virtual std::shared_ptr<button> make_arrow_button(int direction);
 		virtual std::shared_ptr<scroller> make_scroller();
+		virtual std::shared_ptr<progress_bar> make_progress_bar();
 
 		virtual ~element_factory() {}
 	};

libs/ui/include/psemek/ui/progress_bar.hpp

@@ -0,0 +1,22 @@
+#pragma once
+
+#include <psemek/ui/element.hpp>
+#include <psemek/ui/label.hpp>
+
+namespace psemek::ui
+{
+
+	struct progress_bar
+		: element
+	{
+		virtual float value() const { return value_; }
+		virtual void set_value(float value);
+
+		virtual struct label * label() { return nullptr; }
+		virtual struct label const * label() const { return nullptr; }
+
+	private:
+		float value_ = 0.f;
+	};
+
+}

libs/ui/source/element_factory.cpp

@@ -119,4 +119,6 @@ namespace psemek::ui
 
 	std::shared_ptr<scroller> element_factory::make_scroller() { return nullptr; }
 
+	std::shared_ptr<progress_bar> element_factory::make_progress_bar() { return nullptr; }
+
 }

libs/ui/source/progress_bar.cpp

@@ -0,0 +1,13 @@
+#include <psemek/ui/progress_bar.hpp>
+
+#include <psemek/geom/interval.hpp>
+
+namespace psemek::ui
+{
+
+	void progress_bar::set_value(float value)
+	{
+		value_ = geom::clamp(value, {0.f, 1.f});
+	}
+
+}