Fix bitmap font resize failing silently when resizing to an unsupported pixel size (#448), fixed getKerning returning scaled values even for bitmap fonts.

include/SFML/Graphics/Font.hpp

@@ -152,6 +152,10 @@ public :
     ////////////////////////////////////////////////////////////
     /// \brief Retrieve a glyph of the font
     ///
+    /// If the font is a bitmap font, not all character sizes
+    /// might be available. If the glyph is not available at the
+    /// requested size, an empty glyph is returned.
+    ///
     /// \param codePoint     Unicode code point of the character to get
     /// \param characterSize Reference character size
     /// \param bold          Retrieve the bold version or the regular one?
@@ -379,6 +383,12 @@ private :
 /// with this class. However, it may be useful to access the
 /// font metrics or rasterized glyphs for advanced usage.
 ///
+/// Note that if the font is a bitmap font, it is not scalable,
+/// thus not all requested sizes will be available to use. This
+/// needs to be taken into consideration when using sf::Text.
+/// If you need to display text of a certain size, make sure the
+/// corresponding bitmap font that supports that size is used.
+///
 /// \see sf::Text
 ///
 ////////////////////////////////////////////////////////////

include/SFML/Graphics/Text.hpp

@@ -72,6 +72,13 @@ public :
     ////////////////////////////////////////////////////////////
     /// \brief Construct the text from a string, font and size
     ///
+    /// Note that if the used font is a bitmap font, it is not
+    /// scalable, thus not all requested sizes will be available
+    /// to use. This needs to be taken into consideration when
+    /// setting the character size. If you need to display text
+    /// of a certain size, make sure the corresponding bitmap
+    /// font that supports that size is used.
+    ///
     /// \param string         Text assigned to the string
     /// \param font           Font used to draw the string
     /// \param characterSize  Base size of characters, in pixels
@@ -122,6 +129,13 @@ public :
     ///
     /// The default size is 30.
     ///
+    /// Note that if the used font is a bitmap font, it is not
+    /// scalable, thus not all requested sizes will be available
+    /// to use. This needs to be taken into consideration when
+    /// setting the character size. If you need to display text
+    /// of a certain size, make sure the corresponding bitmap
+    /// font that supports that size is used.
+    ///
     /// \param size New character size, in pixels
     ///
     /// \see getCharacterSize