From df44f9344616e9d6e7009fcfedb6620087c1ff22 Mon Sep 17 00:00:00 2001
From: Ekaitz Zarraga <ekaitz@elenq.tech>
Date: Wed, 14 Dec 2022 15:57:48 +0100
Subject: Add lineHeightRatio to let text decide the line spacing

---
 src/graphics/text.cpp | 10 ++++++----
 src/graphics/text.h   |  8 +++++---
 2 files changed, 11 insertions(+), 7 deletions(-)

(limited to 'src/graphics')

diff --git a/src/graphics/text.cpp b/src/graphics/text.cpp
index 7b135d6..51b71ae 100644
--- a/src/graphics/text.cpp
+++ b/src/graphics/text.cpp
@@ -20,24 +20,26 @@ void Text<TextureFont>::arrange(TextureFont &font){
             if(text_[i] == '\n') continue;
         }
 
+        // Position the character in the text
         vertices_[4*i+0].position = sf::Vector2f(
                 col*glyph.advance + glyph.bounds.left,
-                (glyph.bounds.top) + row * glyph.bounds.height
+                (glyph.bounds.top) + row * font.getLineSpacing() * lineHeightRatio_
             );
         vertices_[4*i+1].position = sf::Vector2f(
                 col*glyph.advance + glyph.bounds.left+glyph.bounds.width,
-                (glyph.bounds.top) + row * glyph.bounds.height
+                (glyph.bounds.top) + row * font.getLineSpacing() * lineHeightRatio_
             );
         vertices_[4*i+2].position = sf::Vector2f(
                 col*glyph.advance + glyph.bounds.left+glyph.bounds.width,
-                (glyph.bounds.top+glyph.bounds.height) + row * glyph.bounds.height
+                (glyph.bounds.top+glyph.bounds.height) + row * font.getLineSpacing() * lineHeightRatio_
             );
         vertices_[4*i+3].position = sf::Vector2f(
                 col*glyph.advance + glyph.bounds.left,
-                (glyph.bounds.top+glyph.bounds.height) + row * glyph.bounds.height
+                (glyph.bounds.top+glyph.bounds.height) + row * font.getLineSpacing() * lineHeightRatio_
             );
         col++;
 
+        // Choose the texture rectangle for this character
         vertices_[4*i+0].texCoords = sf::Vector2f(
                 glyph.textureRect.left,
                 glyph.textureRect.top
diff --git a/src/graphics/text.h b/src/graphics/text.h
index f60980c..a390e8a 100644
--- a/src/graphics/text.h
+++ b/src/graphics/text.h
@@ -10,13 +10,14 @@ namespace Graphics {
             Font &font_;
             const std::string text_;
             sf::VertexArray vertices_;
+            float  lineHeightRatio_;
             unsigned int size_, maxWidth_, maxHeight_;
 
             void arrange(Font &font); // Specialize for sf::Font and TextureFont
 
         public:
-            Text(Font &font, const std::string &text, unsigned int maxWidth=0,
-                    unsigned int maxHeight=0);
+            Text(Font &font, const std::string &text, float lineHeightRatio=1.,
+                    unsigned int maxWidth=0, unsigned int maxHeight=0);
 
             void setFont(Font &font);
             void setText(const std::string &text);
@@ -26,11 +27,12 @@ namespace Graphics {
     };
 
     template <typename Font>
-    Text<Font>::Text(Font &font, const std::string &text,
+    Text<Font>::Text(Font &font, const std::string &text, float lineHeightRatio,
             unsigned int maxWidth, unsigned int maxHeight)
         : font_(font)
         , text_(text)
         , vertices_(sf::Quads, text.size()*4)
+        , lineHeightRatio_(lineHeightRatio)
         , size_(0)
         , maxWidth_(maxWidth)
         , maxHeight_(maxHeight)
-- 
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