5 files changed, 34 insertions, 3 deletions
diff --git a/include/cru/osx/graphics/quartz/TextLayout.hpp b/include/cru/osx/graphics/quartz/TextLayout.hpp
index 95e3d1be..35bcc32d 100644
--- a/include/cru/osx/graphics/quartz/TextLayout.hpp
+++ b/include/cru/osx/graphics/quartz/TextLayout.hpp
@@ -30,19 +30,25 @@ class OsxCTTextLayout : public OsxQuartzResource, public virtual ITextLayout {
 
   Rect GetTextBounds(bool includingTrailingSpace = false) override;
   std::vector<Rect> TextRangeRect(const TextRange& text_range) override;
-  Point TextSinglePoint(Index position, bool trailing) override;
+  Rect TextSinglePoint(Index position, bool trailing) override;
   TextHitTestResult HitTest(const Point& point) override;
 
   CTFrameRef GetCTFrameRef() const { return ct_frame_; }
 
   CTFrameRef CreateFrameWithColor(const Color& color);
 
+  Matrix GetTransform() { return transform_; }
+
   String GetDebugString() override;
 
  private:
   void ReleaseResource();
   void RecreateFrame();
 
+  Rect DoGetTextBounds(bool includingTrailingSpace = false);
+  std::vector<Rect> DoTextRangeRect(const TextRange& text_range);
+  Rect DoTextSinglePoint(Index position, bool trailing);
+
  private:
   float max_width_;
   float max_height_;
@@ -58,5 +64,7 @@ class OsxCTTextLayout : public OsxQuartzResource, public virtual ITextLayout {
   int line_count_;
   std::vector<CGPoint> line_origins_;
   std::vector<CTLineRef> lines_;
+
+  Matrix transform_;
 };
 }  // namespace cru::platform::graphics::osx::quartz
diff --git a/include/cru/platform/GraphicsBase.hpp b/include/cru/platform/GraphicsBase.hpp
index aee718a1..73b41bb5 100644
--- a/include/cru/platform/GraphicsBase.hpp
+++ b/include/cru/platform/GraphicsBase.hpp
@@ -206,6 +206,19 @@ struct Rect final {
            point.y < GetBottom();
   }
 
+  constexpr Rect Normalize() const {
+    Rect result = *this;
+    if (result.width < 0) {
+      result.left += result.width;
+      result.width = -result.width;
+    }
+    if (result.height < 0) {
+      result.top += result.height;
+      result.height = -result.height;
+    }
+    return result;
+  }
+
   float left = 0.0f;
   float top = 0.0f;
   float width = 0.0f;
diff --git a/include/cru/platform/Matrix.hpp b/include/cru/platform/Matrix.hpp
index 72459b79..47917d47 100644
--- a/include/cru/platform/Matrix.hpp
+++ b/include/cru/platform/Matrix.hpp
@@ -43,6 +43,15 @@ struct Matrix {
                  point.x * m12 + point.y * m22 + m32};
   }
 
+  Rect TransformRect(const Rect& rect, bool normalize = true) const {
+    Point lefttop = TransformPoint(rect.GetLeftTop()),
+          rightbottom = TransformPoint(rect.GetRightBottom());
+    auto result =
+        Rect::FromVertices(lefttop.x, lefttop.y, rightbottom.x, rightbottom.y);
+    if (normalize) result = result.Normalize();
+    return result;
+  }
+
   static Matrix Identity() {
     return Matrix{1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f};
   }
diff --git a/include/cru/platform/graphics/TextLayout.hpp b/include/cru/platform/graphics/TextLayout.hpp
index ec3c2d96..5f98696d 100644
--- a/include/cru/platform/graphics/TextLayout.hpp
+++ b/include/cru/platform/graphics/TextLayout.hpp
@@ -17,7 +17,8 @@ struct ITextLayout : virtual IGraphicsResource {
 
   virtual Rect GetTextBounds(bool includingTrailingSpace = false) = 0;
   virtual std::vector<Rect> TextRangeRect(const TextRange& text_range) = 0;
-  virtual Point TextSinglePoint(Index position, bool trailing) = 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
diff --git a/include/cru/ui/render/TextRenderObject.hpp b/include/cru/ui/render/TextRenderObject.hpp
index ef39b7a6..68d2d0ce 100644
--- a/include/cru/ui/render/TextRenderObject.hpp
+++ b/include/cru/ui/render/TextRenderObject.hpp
@@ -43,7 +43,7 @@ class TextRenderObject : public RenderObject {
   void SetFont(std::shared_ptr<platform::graphics::IFont> font);
 
   std::vector<Rect> TextRangeRect(const TextRange& text_range);
-  Point TextSinglePoint(gsl::index position, bool trailing);
+  Rect TextSinglePoint(gsl::index position, bool trailing);
   platform::graphics::TextHitTestResult TextHitTest(const Point& point);
 
   std::optional<TextRange> GetSelectionRange() const {