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Implement clone_with_style for FreeType

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This commit is contained in:
Brian Anderson 2013-01-07 14:40:27 -08:00
parent 905ad4a88e
commit ae6939bc1a
2 changed files with 22 additions and 11 deletions
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2
src/servo-gfx/font.rs
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@ -51,7 +51,7 @@ pub impl FontHandle {
#[cfg(target_os = "linux")] #[cfg(target_os = "linux")]
static pub fn new_from_buffer(fctx: &native::FontContextHandle, buf: ~[u8], style: &SpecifiedFontStyle) -> Result<FontHandle, ()> { static pub fn new_from_buffer(fctx: &native::FontContextHandle, buf: ~[u8], style: &SpecifiedFontStyle) -> Result<FontHandle, ()> {
freetype_impl::font::FreeTypeFontHandle::new_from_buffer(fctx, move buf, style) freetype_impl::font::FreeTypeFontHandle::new_from_buffer(fctx, @move buf, style)
} }
} }

31
src/servo-gfx/freetype_impl/font.rs
View file

@ -76,11 +76,15 @@ pub impl FreeTypeFontTable : FontTableMethods {
} }
} }
enum FontSource {
FontSourceMem(@~[u8]),
FontSourceFile(~str)
}
pub struct FreeTypeFontHandle { pub struct FreeTypeFontHandle {
// The font binary. This must stay valid for the lifetime of the font, // The font binary. This must stay valid for the lifetime of the font,
// if the font is created using FT_Memory_Face. // if the font is created using FT_Memory_Face.
// TODO: support both FT_Memory_Face (from memory) and FT_Face (from file) source: FontSource,
buf: ~[u8],
face: FT_Face, face: FT_Face,
drop { drop {
@ -117,7 +121,7 @@ pub impl FreeTypeFontHandle {
return Err(()); return Err(());
} }
if FreeTypeFontHandle::set_char_size(face, style.pt_size).is_ok() { if FreeTypeFontHandle::set_char_size(face, style.pt_size).is_ok() {
Ok(FreeTypeFontHandle { buf: ~[], face: face }) Ok(FreeTypeFontHandle { source: FontSourceFile(file), face: face })
} else { } else {
Err(()) Err(())
} }
@ -138,15 +142,15 @@ pub impl FreeTypeFontHandle {
return Err(()); return Err(());
} }
Ok(FreeTypeFontHandle { buf: ~[], face: face }) Ok(FreeTypeFontHandle { source: FontSourceFile(file), face: face })
} }
static pub fn new_from_buffer(fctx: &FreeTypeFontContextHandle, static pub fn new_from_buffer(fctx: &FreeTypeFontContextHandle,
buf: ~[u8], style: &SpecifiedFontStyle) -> Result<FreeTypeFontHandle, ()> { buf: @~[u8], style: &SpecifiedFontStyle) -> Result<FreeTypeFontHandle, ()> {
let ft_ctx: FT_Library = fctx.ctx.ctx; let ft_ctx: FT_Library = fctx.ctx.ctx;
if ft_ctx.is_null() { return Err(()); } if ft_ctx.is_null() { return Err(()); }
let face_result = do vec::as_imm_buf(buf) |bytes: *u8, len: uint| { let face_result = do vec::as_imm_buf(*buf) |bytes: *u8, len: uint| {
create_face_from_buffer(ft_ctx, bytes, len, style.pt_size) create_face_from_buffer(ft_ctx, bytes, len, style.pt_size)
}; };
@ -154,7 +158,7 @@ pub impl FreeTypeFontHandle {
// and moving buf into the struct ctor, but cant' move out of // and moving buf into the struct ctor, but cant' move out of
// captured binding. // captured binding.
return match face_result { return match face_result {
Ok(face) => Ok(FreeTypeFontHandle { face: face, buf: move buf }), Ok(face) => Ok(FreeTypeFontHandle { face: face, source: FontSourceMem(buf) }),
Err(()) => Err(()) Err(()) => Err(())
}; };
@ -223,9 +227,16 @@ pub impl FreeTypeFontHandle : FontHandleMethods {
} }
} }
fn clone_with_style(_fctx: &native::FontContextHandle, fn clone_with_style(fctx: &native::FontContextHandle,
_style: &UsedFontStyle) -> Result<FontHandle, ()> { style: &UsedFontStyle) -> Result<FreeTypeFontHandle, ()> {
fail; match self.source {
FontSourceMem(buf) => {
FreeTypeFontHandle::new_from_buffer(fctx, buf, style)
}
FontSourceFile(copy file) => {
FreeTypeFontHandle::new_from_file(fctx, file, style)
}
}
} }
pub fn glyph_index(codepoint: char) -> Option<GlyphIndex> { pub fn glyph_index(codepoint: char) -> Option<GlyphIndex> {