1 files changed, 33 insertions, 0 deletions
diff --git a/include/cru/platform/graphics/TextLayout.h b/include/cru/platform/graphics/TextLayout.h
new file mode 100644
index 00000000..e060186b
--- /dev/null
+++ b/include/cru/platform/graphics/TextLayout.h
@@ -0,0 +1,33 @@
+#pragma once
+#include "Resource.h"
+
+#include <string>
+#include <vector>
+
+namespace cru::platform::graphics {
+// Requirement:
+// All text must be left-top aligned.
+struct CRU_PLATFORM_GRAPHICS_API ITextLayout : virtual IGraphicsResource {
+  virtual String GetText() = 0;
+  virtual void SetText(String new_text) = 0;
+
+  virtual std::shared_ptr<IFont> GetFont() = 0;
+  virtual void SetFont(std::shared_ptr<IFont> font) = 0;
+
+  virtual void SetMaxWidth(float max_width) = 0;
+  virtual void SetMaxHeight(float max_height) = 0;
+
+  virtual bool IsEditMode() = 0;
+  virtual void SetEditMode(bool enable) = 0;
+
+  virtual Index GetLineIndexFromCharIndex(Index char_index) = 0;
+  virtual Index GetLineCount() = 0;
+  virtual float GetLineHeight(Index line_index) = 0;
+
+  virtual Rect GetTextBounds(bool includingTrailingSpace = false) = 0;
+  virtual std::vector<Rect> TextRangeRect(const TextRange& text_range) = 0;
+  // Width is always 0, height is line height.
+  virtual Rect TextSinglePoint(Index position, bool trailing) = 0;
+  virtual TextHitTestResult HitTest(const Point& point) = 0;
+};
+}  // namespace cru::platform::graphics