Merge branch 'issue4-dev' into 'master'

Resolve "Abstract out the common part of TextBlock and TextBox."

Closes #4

See merge request crupest/CruUI!3

1 files changed, 106 insertions, 0 deletions

diff --git a/src/ui/controls/text_control.h b/src/ui/controls/text_control.h
new file mode 100644
index 00000000..a24766dc
--- /dev/null
+++ b/src/ui/controls/text_control.h
@@ -0,0 +1,106 @@
+#pragma once
+
+#include "ui/control.h"
+
+namespace cru::ui::controls
+{
+    class TextControl : public Control
+    {
+    protected:
+        TextControl(
+            const Microsoft::WRL::ComPtr<IDWriteTextFormat>& init_text_format,
+            const Microsoft::WRL::ComPtr<ID2D1Brush>& init_brush
+        );
+    public:
+        using TextLayoutHandlerPtr = FunctionPtr<void(Microsoft::WRL::ComPtr<IDWriteTextLayout>)>;
+
+        TextControl(const TextControl& other) = delete;
+        TextControl(TextControl&& other) = delete;
+        TextControl& operator=(const TextControl& other) = delete;
+        TextControl& operator=(TextControl&& other) = delete;
+        ~TextControl() override = default;
+
+        String GetText() const
+        {
+            return text_;
+        }
+
+        void SetText(const String& text);
+
+        Microsoft::WRL::ComPtr<ID2D1Brush> GetBrush() const
+        {
+            return brush_;
+        }
+
+        void SetBrush(const Microsoft::WRL::ComPtr<ID2D1Brush>& brush);
+
+        Microsoft::WRL::ComPtr<IDWriteTextFormat> GetTextFormat() const
+        {
+            return text_format_;
+        }
+
+        void SetTextFormat(const Microsoft::WRL::ComPtr<IDWriteTextFormat>& text_format);
+
+
+        void AddTextLayoutHandler(TextLayoutHandlerPtr handler);
+
+        void RemoveTextLayoutHandler(const TextLayoutHandlerPtr& handler);
+
+        bool IsSelectable() const
+        {
+            return is_selectable_;
+        }
+
+        std::optional<TextRange> GetSelectedRange() const
+        {
+            return selected_range_;
+        }
+
+        void SetSelectedRange(std::optional<TextRange> text_range);
+
+        void ClearSelection()
+        {
+            SetSelectedRange(std::nullopt);
+        }
+
+    protected:
+        void SetSelectable(bool is_selectable);
+
+    protected:
+        void OnSizeChangedCore(events::SizeChangedEventArgs& args) override final;
+        void OnDraw(ID2D1DeviceContext* device_context) override;
+
+        void OnMouseDownCore(events::MouseButtonEventArgs& args) override final;
+        void OnMouseMoveCore(events::MouseEventArgs& args) override final;
+        void OnMouseUpCore(events::MouseButtonEventArgs& args) override final;
+
+        void OnLoseFocusCore(events::FocusChangeEventArgs& args) override;
+
+        Size OnMeasure(const Size& available_size) override final;
+
+        virtual void RequestChangeCaretPosition(unsigned position);
+
+    private:
+        void OnTextChangedCore(const String& old_text, const String& new_text);
+
+        void RecreateTextLayout();
+
+    private:
+        String text_;
+
+        Microsoft::WRL::ComPtr<ID2D1Brush> brush_;
+        Microsoft::WRL::ComPtr<ID2D1Brush> selection_brush_;
+        Microsoft::WRL::ComPtr<IDWriteTextFormat> text_format_;
+    protected:
+        Microsoft::WRL::ComPtr<IDWriteTextLayout> text_layout_;
+
+    private:
+        Vector<TextLayoutHandlerPtr> text_layout_handlers_;
+
+        bool is_selectable_ = false;
+
+        bool is_selecting_ = false;
+        unsigned mouse_down_position_ = 0;
+        std::optional<TextRange> selected_range_ = std::nullopt;
+    };
+}