Add multiline spacing and GetTextSize to Atom Font

Code/CryEngine/CryCommon/IFont.h

@@ -150,6 +150,7 @@ struct STextDrawContext
     Vec2 m_size;
     Vec2i m_requestSize;
     float m_widthScale;
+    float m_lineSpacing;
 
     float m_clipX;
     float m_clipY;
@@ -180,6 +181,7 @@ struct STextDrawContext
         , m_size(16.0f, 16.0f)
         , m_requestSize(static_cast<int32>(m_size.x), static_cast<int32>(m_size.y))
         , m_widthScale(1.0f)
+        , m_lineSpacing(0.f)
         , m_clipX(0)
         , m_clipY(0)
         , m_clipWidth(0)
@@ -214,11 +216,13 @@ struct STextDrawContext
     void SetTransform(const Matrix34& transform) { m_transform = transform; }
     void SetBaseState(int baseState) { m_baseState = baseState; }
     void SetOverrideViewProjMatrices(bool overrideViewProjMatrices) { m_overrideViewProjMatrices = overrideViewProjMatrices; }
+    void SetLineSpacing(float lineSpacing) { m_lineSpacing = lineSpacing; }
 
     float GetCharWidth() const { return m_size.x; }
     float GetCharHeight() const { return m_size.y; }
     float GetCharWidthScale() const { return m_widthScale; }
     int GetFlags() const { return m_drawTextFlags; }
+    float GetLineSpacing() const { return m_lineSpacing; }
 
     bool IsColorOverridden() const { return m_colorOverride.a != 0; }
 };

Code/Framework/AzFramework/AzFramework/Font/FontInterface.h

@@ -44,6 +44,7 @@ namespace AzFramework
         AZ::Vector3 m_position; //! world space position for 3d draws, screen space x,y,depth for 2d.
         AZ::Color   m_color = AZ::Colors::White; //! Color to draw the text
         AZ::Vector2 m_scale = AZ::Vector2(1.0f); //! font scale
+        float       m_lineSpacing; //! Spacing between new lines, as a percentage of m_scale.
         TextHorizontalAlignment m_hAlign = TextHorizontalAlignment::Left; //! Horizontal text alignment
         TextVerticalAlignment m_vAlign = TextVerticalAlignment::Top; //! Vertical text alignment
         bool m_monospace = false; //! disable character proportional spacing
@@ -67,6 +68,9 @@ namespace AzFramework
         virtual void DrawScreenAlignedText3d(
             const TextDrawParameters& params,
             const AZStd::string_view& string) = 0;
+        virtual AZ::Vector2 GetTextSize(
+            const TextDrawParameters& params,
+            const AZStd::string_view& string) = 0;
     };
 
     class FontQueryInterface