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1 files changed, 55 insertions, 0 deletions

diff --git a/include/cru/win/graphics/direct/TextLayout.hpp b/include/cru/win/graphics/direct/TextLayout.hpp
new file mode 100644
index 00000000..3320431f
--- /dev/null
+++ b/include/cru/win/graphics/direct/TextLayout.hpp
@@ -0,0 +1,55 @@
+#pragma once
+#include "ComResource.hpp"
+#include "Resource.hpp"
+
+#include "cru/platform/graphics/TextLayout.hpp"
+
+#include <limits>
+#include <memory>
+
+namespace cru::platform::graphics::win::direct {
+class DWriteFont;
+
+class DWriteTextLayout : public DirectGraphResource,
+                         public virtual ITextLayout,
+                         public virtual IComResource<IDWriteTextLayout> {
+ public:
+  DWriteTextLayout(DirectGraphFactory* factory, std::shared_ptr<IFont> font,
+                   std::u16string text);
+
+  CRU_DELETE_COPY(DWriteTextLayout)
+  CRU_DELETE_MOVE(DWriteTextLayout)
+
+  ~DWriteTextLayout() override;
+
+ public:
+  IDWriteTextLayout* GetComInterface() const override {
+    return text_layout_.Get();
+  }
+
+ public:
+  std::u16string GetText() override;
+  std::u16string_view GetTextView() override;
+  void SetText(std::u16string new_text) override;
+
+  std::shared_ptr<IFont> GetFont() override;
+  void SetFont(std::shared_ptr<IFont> font) override;
+
+  void SetMaxWidth(float max_width) override;
+  void SetMaxHeight(float max_height) override;
+
+  Rect GetTextBounds() override;
+  // Return empty vector if text_range.count is 0. Text range could be in
+  // reverse direction, it should be normalized first in implementation.
+  std::vector<Rect> TextRangeRect(const TextRange& text_range) override;
+  Point TextSinglePoint(Index position, bool trailing) override;
+  TextHitTestResult HitTest(const Point& point) override;
+
+ private:
+  std::u16string text_;
+  std::shared_ptr<DWriteFont> font_;
+  float max_width_ = std::numeric_limits<float>::max();
+  float max_height_ = std::numeric_limits<float>::max();
+  Microsoft::WRL::ComPtr<IDWriteTextLayout> text_layout_;
+};
+}  // namespace cru::platform::graphics::win::direct