Use atoms for font template structures.

components/gfx/font_cache_task.rs

@@ -61,9 +61,9 @@ impl FontFamily {
         None
     }
 
-    fn add_template(&mut self, identifier: &str, maybe_data: Option<Vec<u8>>) {
+    fn add_template(&mut self, identifier: Atom, maybe_data: Option<Vec<u8>>) {
         for template in self.templates.iter() {
-            if template.identifier() == identifier {
+            if *template.identifier() == identifier {
                 return;
             }
         }
@@ -140,7 +140,7 @@ impl FontCache {
                             match maybe_resource {
                                 Ok((_, bytes)) => {
                                     let family = &mut self.web_families.get_mut(&family_name).unwrap();
-                                    family.add_template(&url.to_string(), Some(bytes));
+                                    family.add_template(Atom::from_slice(&url.to_string()), Some(bytes));
                                 },
                                 Err(_) => {
                                     debug!("Failed to load web font: family={:?} url={}", family_name, url);
@@ -150,7 +150,7 @@ impl FontCache {
                         Source::Local(ref local_family_name) => {
                             let family = &mut self.web_families.get_mut(&family_name).unwrap();
                             get_variations_for_family(&local_family_name, |path| {
-                                family.add_template(&path, None);
+                                family.add_template(Atom::from_slice(&path), None);
                             });
                         }
                     }
@@ -192,7 +192,7 @@ impl FontCache {
 
             if s.templates.len() == 0 {
                 get_variations_for_family(family_name, |path| {
-                    s.add_template(&path, None);
+                    s.add_template(Atom::from_slice(&path), None);
                 });
             }
 

components/gfx/font_context.rs

@@ -14,6 +14,7 @@ use fnv::FnvHasher;
 use platform::font::FontHandle;
 use platform::font_template::FontTemplateData;
 use smallvec::SmallVec8;
+use string_cache::Atom;
 use util::cache::HashCache;
 use util::geometry::Au;
 use util::mem::HeapSizeOf;
@@ -60,7 +61,7 @@ struct FallbackFontCacheEntry {
 /// can be shared by multiple text runs.
 struct PaintFontCacheEntry {
     pt_size: Au,
-    identifier: String,
+    identifier: Atom,
     font: Rc<RefCell<ScaledFont>>,
 }
 

components/gfx/font_template.rs

@@ -6,8 +6,8 @@ use font::FontHandleMethods;
 use platform::font_context::FontContextHandle;
 use platform::font::FontHandle;
 use platform::font_template::FontTemplateData;
+use string_cache::Atom;
 
-use std::borrow::ToOwned;
 use std::sync::{Arc, Weak};
 use style::computed_values::{font_stretch, font_weight};
 
@@ -46,7 +46,7 @@ impl PartialEq for FontTemplateDescriptor {
 /// font instance handles. It contains a unique
 /// FontTemplateData structure that is platform specific.
 pub struct FontTemplate {
-    identifier: String,
+    identifier: Atom,
     descriptor: Option<FontTemplateDescriptor>,
     weak_ref: Option<Weak<FontTemplateData>>,
     // GWTODO: Add code path to unset the strong_ref for web fonts!
@@ -58,9 +58,9 @@ pub struct FontTemplate {
 /// is common, regardless of the number of instances of
 /// this font handle per thread.
 impl FontTemplate {
-    pub fn new(identifier: &str, maybe_bytes: Option<Vec<u8>>) -> FontTemplate {
+    pub fn new(identifier: Atom, maybe_bytes: Option<Vec<u8>>) -> FontTemplate {
         let maybe_data = match maybe_bytes {
-            Some(_) => Some(FontTemplateData::new(identifier, maybe_bytes)),
+            Some(_) => Some(FontTemplateData::new(identifier.clone(), maybe_bytes)),
             None => None,
         };
 
@@ -75,7 +75,7 @@ impl FontTemplate {
         };
 
         FontTemplate {
-            identifier: identifier.to_owned(),
+            identifier: identifier,
             descriptor: None,
             weak_ref: maybe_weak_ref,
             strong_ref: maybe_strong_ref,
@@ -83,8 +83,8 @@ impl FontTemplate {
         }
     }
 
-    pub fn identifier<'a>(&'a self) -> &'a str {
+    pub fn identifier(&self) -> &Atom {
-        &*self.identifier
+        &self.identifier
     }
 
     /// Get the data for creating a font if it matches a given descriptor.
@@ -158,7 +158,7 @@ impl FontTemplate {
         }
 
         assert!(self.strong_ref.is_none());
-        let template_data = Arc::new(FontTemplateData::new(&self.identifier, None));
+        let template_data = Arc::new(FontTemplateData::new(self.identifier.clone(), None));
         self.weak_ref = Some(template_data.downgrade());
         template_data
     }

components/gfx/platform/freetype/font_template.rs

@@ -2,9 +2,9 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-use std::borrow::ToOwned;
 use std::fs::File;
 use std::io::Read;
+use string_cache::Atom;
 
 /// Platform specific font representation for Linux.
 /// The identifier is an absolute path, and the bytes
@@ -12,18 +12,18 @@ use std::io::Read;
 /// freetype and azure directly.
 pub struct FontTemplateData {
     pub bytes: Vec<u8>,
-    pub identifier: String,
+    pub identifier: Atom,
 }
 
 impl FontTemplateData {
-    pub fn new(identifier: &str, font_data: Option<Vec<u8>>) -> FontTemplateData {
+    pub fn new(identifier: Atom, font_data: Option<Vec<u8>>) -> FontTemplateData {
         let bytes = match font_data {
             Some(bytes) => {
                 bytes
             },
             None => {
                 // TODO: Handle file load failure!
-                let mut file = File::open(identifier).unwrap();
+                let mut file = File::open(identifier.as_slice()).unwrap();
                 let mut buffer = vec![];
                 file.read_to_end(&mut buffer).unwrap();
                 buffer
@@ -32,7 +32,7 @@ impl FontTemplateData {
 
         FontTemplateData {
             bytes: bytes,
-            identifier: identifier.to_owned(),
+            identifier: identifier,
         }
     }
 }

components/gfx/platform/macos/font_template.rs

@@ -7,7 +7,7 @@ use core_graphics::font::CGFont;
 use core_text::font::CTFont;
 use core_text;
 
-use std::borrow::ToOwned;
+use string_cache::Atom;
 
 /// Platform specific font representation for mac.
 /// The identifier is a PostScript font name. The
@@ -15,7 +15,7 @@ use std::borrow::ToOwned;
 /// paint functions that create CGFont references.
 pub struct FontTemplateData {
     pub ctfont: Option<CTFont>,
-    pub identifier: String,
+    pub identifier: Atom,
     pub font_data: Option<Vec<u8>>
 }
 
@@ -23,7 +23,7 @@ unsafe impl Send for FontTemplateData {}
 unsafe impl Sync for FontTemplateData {}
 
 impl FontTemplateData {
-    pub fn new(identifier: &str, font_data: Option<Vec<u8>>) -> FontTemplateData {
+    pub fn new(identifier: Atom, font_data: Option<Vec<u8>>) -> FontTemplateData {
         let ctfont = match font_data {
             Some(ref bytes) => {
                 let fontprov = CGDataProvider::from_buffer(bytes);
@@ -34,7 +34,7 @@ impl FontTemplateData {
                 }
             },
             None => {
-                Some(core_text::font::new_from_name(identifier, 0.0).unwrap())
+                Some(core_text::font::new_from_name(identifier.as_slice(), 0.0).unwrap())
             }
         };