Add safe variant of Font::from_memory, that has 'static requirement

Author: crumblingstatue

examples/window-test.rs

@@ -34,7 +34,7 @@ fn main() {
         Style::CLOSE,
         &ContextSettings::default(),
     );
-    let font = unsafe { Font::from_memory(include_bytes!("resources/sansation.ttf")) }.unwrap();
+    let font = Font::from_memory_static(include_bytes!("resources/sansation.ttf")).unwrap();
 
     while rw.is_open() {
         while let Some(ev) = rw.poll_event() {

src/graphics/font.rs

@@ -114,13 +114,24 @@ impl Font {
     /// SFML cannot preload all the font data in this function, so the buffer pointed by `memory`
     /// has to remain valid until the `Font` object loads a new font or is destroyed.
     ///
-    /// See also
+    /// For a safe version, see [`Font::from_memory_static`].
+    ///
+    /// # See also
+    ///
     /// [`Font::from_file`], [`Font::from_stream`]
     pub unsafe fn from_memory(memory: &[u8]) -> SfResult<SfBox<Self>> {
         let fnt =
             unsafe { ffi::sfFont_createFromMemory(memory.as_ptr() as *const _, memory.len()) };
         SfBox::new(fnt).into_sf_result()
     }
+    /// Load the font from a file in static memory.
+    ///
+    /// This function is safe because the font will stay in memory as long as required.
+    ///
+    /// See [`Font::from_memory`]
+    pub fn from_memory_static(memory: &'static [u8]) -> SfResult<SfBox<Self>> {
+        unsafe { Self::from_memory(memory) }
+    }
 }
 
 /// Font information, properties, glyph fetch

src/graphics/rc_font.rs

@@ -255,14 +255,26 @@ impl RcFont {
     /// SFML cannot preload all the font data in this function, so the buffer pointed by `memory`
     /// has to remain valid until the `RcFont` object loads a new font or is destroyed.
     ///
-    /// See also
+    /// For a safe version, see [`RcFont::from_memory_static`].
+    ///
+    /// # See also
+    ///
     /// [`RcFont::from_file`], [`RcFont::from_stream`]
     pub unsafe fn from_memory(memory: &[u8]) -> SfResult<Self> {
         Ok(RcFont {
             font: Rc::new(RefCell::new(unsafe { Font::from_memory(memory) }?)),
         })
     }
 
+    /// Load the font from a file in static memory.
+    ///
+    /// This function is safe because the font will stay in memory as long as required.
+    ///
+    /// See [`RcFont::from_memory`]
+    pub fn from_memory_static(memory: &'static [u8]) -> SfResult<Self> {
+        unsafe { Self::from_memory(memory) }
+    }
+
     /// Get the texture containing the glyphs of a given size in a font
     ///
     /// # Arguments