Develop layout for ScrollView

1 files changed, 85 insertions, 0 deletions

diff --git a/src/ui/controls/scroll_control.hpp b/src/ui/controls/scroll_control.hpp
new file mode 100644
index 00000000..c39b18f4
--- /dev/null
+++ b/src/ui/controls/scroll_control.hpp
@@ -0,0 +1,85 @@
+#pragma once
+
+#include "ui/control.hpp"
+
+namespace cru::ui::controls
+{
+    // Done: OnMeasureContent
+    // Done: OnLayoutContent
+    // TODO: HitTest
+    // TODO: Draw
+    // TODO: ScrollBar
+    // TODO: MouseEvent
+    class ScrollControl : public Control
+    {
+    public:
+        enum class ScrollBarVisibility
+        {
+            None,
+            Auto,
+            Always
+        };
+
+    protected:
+        explicit ScrollControl(bool container);
+    public:
+        ScrollControl(const ScrollControl& other) = delete;
+        ScrollControl(ScrollControl&& other) = delete;
+        ScrollControl& operator=(const ScrollControl& other) = delete;
+        ScrollControl& operator=(ScrollControl&& other) = delete;
+        ~ScrollControl() override;
+
+
+        bool IsHorizontalScrollEnabled() const
+        {
+            return horizontal_scroll_enabled_;
+        }
+
+        void SetHorizontalScrollEnabled(bool enable);
+
+        bool IsVerticalScrollEnabled() const
+        {
+            return vertical_scroll_enabled_;
+        }
+
+        void SetVerticalScrollEnabled(bool enable);
+
+
+        ScrollBarVisibility GetHorizontalScrollBarVisibility() const;
+        void SetHorizontalScrollBarVisibility(ScrollBarVisibility visibility);
+        ScrollBarVisibility GetVerticalScrollBarVisibility() const;
+        void SetVerticalScrollBarVisibility(ScrollBarVisibility visibility);
+
+        Control* HitTest(const Point& point) override final;
+
+    protected:
+        float GetViewWidth() const
+        {
+            return view_width_;
+        }
+
+        float GetViewHeight() const
+        {
+            return view_height_;
+        }
+
+        void SetViewWidth(float length);
+        void SetViewHeight(float length);
+
+        Size OnMeasureContent(const Size& available_size) override final;
+        void OnLayoutContent(const Rect& rect) override final;
+
+    private:
+        bool horizontal_scroll_enabled_ = true;
+        bool vertical_scroll_enabled_ = true;
+
+        ScrollBarVisibility horizontal_scroll_bar_visibility_ = ScrollBarVisibility::Auto;
+        ScrollBarVisibility vertical_scroll_bar_visibility_ = ScrollBarVisibility::Auto;
+
+        float offset_x_ = 0.0f;
+        float offset_y_ = 0.0f;
+
+        float view_width_ = 0.0f;
+        float view_height_ = 0.0f;
+    };
+}