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Fonts should keep their libraries alive

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This commit is contained in:
Brian Anderson 2012-09-13 19:13:01 -07:00
parent d937e3c2fe
commit a475304754
2 changed files with 19 additions and 7 deletions
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5
src/servo/text/font.rs
View file

@ -12,6 +12,8 @@ A font handle. Layout can use this to calculate glyph metrics
and the renderer can use it to render text.
"]
struct Font {
// A back reference to keep the library alive
lib: @FontLibrary,
fontbuf: @~[u8],
native_font: NativeFont,
}
@ -33,8 +35,9 @@ impl Font {
}
}
fn Font(fontbuf: @~[u8], +native_font: NativeFont) -> Font {
fn Font(lib: @FontLibrary, fontbuf: @~[u8], +native_font: NativeFont) -> Font {
Font {
lib: lib,
fontbuf : fontbuf,
native_font : move native_font,
}

21
src/servo/text/font_library.rs
View file

@ -3,6 +3,10 @@ export FontLibrary, native;
use font::{Font, test_font_bin};
struct FontLibrary {
// FIXME: This is a hack to hold onto a boxed reference to
// the self pointer until explicit self types work on methods.
// This is a huge space leak.
mut at_self: Option<@FontLibrary>,
native_lib: native::NativeFontLibrary,
drop {
@ -12,7 +16,8 @@ struct FontLibrary {
impl FontLibrary {
fn get_font() -> @Font {
match create_font(&self.native_lib) {
assert self.at_self.is_some();
match create_font(self.at_self.get(), &self.native_lib) {
Ok(font) => font,
Err(*) => /* FIXME */ fail
}
@ -23,13 +28,17 @@ impl FontLibrary {
}
}
fn FontLibrary() -> FontLibrary {
FontLibrary {
fn FontLibrary() -> @FontLibrary {
let lib = @FontLibrary {
mut at_self: None,
native_lib: native::create_native_lib()
}
};
lib.at_self = Some(lib);
return lib;
}
fn create_font(native_lib: &native::NativeFontLibrary) -> Result<@Font, ()> {
fn create_font(lib: @FontLibrary, native_lib: &native::NativeFontLibrary) -> Result<@Font, ()> {
let font_bin = @test_font_bin();
let native_font = native_font::create(native_lib, font_bin);
let native_font = if native_font.is_ok() {
@ -37,7 +46,7 @@ fn create_font(native_lib: &native::NativeFontLibrary) -> Result<@Font, ()> {
} else {
return Err(native_font.get_err());
};
return Ok(@Font(font_bin, native_font));
return Ok(@Font(lib, font_bin, native_font));
}
#[cfg(target_os = "linux")]