Reduced minimum SFML version from 2.4.0 to 2.3.0

.appveyor.yml

@@ -23,7 +23,7 @@ environment:
 
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
       SFML_ROOT:      C:\SFML-VS2013
-      SFML_VERSION:   2.4.0
+      SFML_VERSION:   2.3
       GENERATOR:      Visual Studio 12 2013
       BUILD_TYPE:     Release
       SHARED_LIBS:    TRUE

src/TGUI/Font.cpp

@@ -114,7 +114,13 @@ namespace tgui
     const sf::Glyph& Font::getGlyph(sf::Uint32 codePoint, unsigned int characterSize, bool bold, float outlineThickness) const
     {
         assert(m_font != nullptr);
+
+    #if SFML_VERSION_MAJOR > 2 || (SFML_VERSION_MAJOR == 2 && SFML_VERSION_MINOR >= 4)
         return m_font->getGlyph(codePoint, characterSize, bold, outlineThickness);
+    #else
+        (void)outlineThickness;
+        return m_font->getGlyph(codePoint, characterSize, bold);
+    #endif
     }
 
     /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

src/TGUI/Text.cpp

@@ -74,7 +74,12 @@ namespace tgui
     void Text::setColor(Color color)
     {
         m_color = color;
+
+    #if SFML_VERSION_MAJOR > 2 || (SFML_VERSION_MAJOR == 2 && SFML_VERSION_MINOR >= 4)
         m_text.setFillColor(Color::calcColorOpacity(color, m_opacity));
+    #else
+        m_text.setColor(Color::calcColorOpacity(color, m_opacity));
+    #endif
     }
 
     /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
@@ -89,7 +94,12 @@ namespace tgui
     void Text::setOpacity(float opacity)
     {
         m_opacity = opacity;
+
+    #if SFML_VERSION_MAJOR > 2 || (SFML_VERSION_MAJOR == 2 && SFML_VERSION_MINOR >= 4)
         m_text.setFillColor(Color::calcColorOpacity(m_color, opacity));
+    #else
+        m_text.setColor(Color::calcColorOpacity(m_color, opacity));
+    #endif
     }
 
     /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

tests/travis_linux_tests.sh

@@ -1,6 +1,6 @@
 set -eo pipefail
 
-export SFML_VERSION=2.4.0
+export SFML_VERSION=2.3
 export SFML_ROOT=$HOME/SFML-${SFML_VERSION}_LINUX
 export DISPLAY=:99.0
 sh -e /etc/init.d/xvfb start