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Some hacks to make text line breaking a bit faster.

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This commit is contained in:
Brian J. Burg 2012-11-12 08:12:13 -08:00
parent 7bbff6154c
commit 84216f838f
2 changed files with 12 additions and 7 deletions
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4
src/servo-gfx/font.rs
View file

@ -371,7 +371,7 @@ pub impl Font : FontMethods {
}
fn measure_text(run: &TextRun, range: Range) -> RunMetrics {
assert range.is_valid_for_string(run.text);
//assert range.is_valid_for_string(run.text);
debug!("measuring text range '%s'", run.text.substr(range.begin(), range.length()));
@ -389,7 +389,7 @@ pub impl Font : FontMethods {
// looking at actual glyph extents can yield a tighter box.
let metrics = RunMetrics { advance_width: advance,
bounding_box: bounds,
bounding_box: move bounds,
ascent: self.metrics.ascent,
descent: self.metrics.descent,
};

15
src/servo-gfx/text/glyph.rs
View file

@ -154,18 +154,19 @@ pure fn MissingGlyphsEntry(glyphCount: uint) -> GlyphEntry {
// because GlyphEntry is immutable and only a u32 in size.
impl GlyphEntry {
// getter methods
#[inline(always)]
pure fn advance() -> Au {
assert self.is_simple();
//assert self.is_simple();
from_int(((self.value & GLYPH_ADVANCE_MASK) >> GLYPH_ADVANCE_SHIFT) as int)
}
pure fn index() -> GlyphIndex {
assert self.is_simple();
//assert self.is_simple();
self.value & GLYPH_ID_MASK
}
pure fn offset() -> Point2D<Au> {
assert self.is_simple();
//assert self.is_simple();
Point2D(Au(0), Au(0))
}
@ -206,6 +207,7 @@ impl GlyphEntry {
GlyphEntry(self.value | FLAG_CHAR_IS_TAB)
}
#[inline(always)]
pure fn set_char_is_newline() -> GlyphEntry {
assert !self.is_simple();
GlyphEntry(self.value | FLAG_CHAR_IS_NEWLINE)
@ -230,10 +232,12 @@ impl GlyphEntry {
((self.value & GLYPH_COUNT_MASK) >> GLYPH_COUNT_SHIFT) as u16
}
#[inline(always)]
pure fn is_simple() -> bool {
self.has_flag(FLAG_IS_SIMPLE_GLYPH)
}
#[inline(always)]
/*priv*/ pure fn has_flag(flag: u32) -> bool {
(self.value & flag) != 0
}
@ -428,6 +432,7 @@ impl GlyphInfo {
}
}
#[inline(always)]
fn advance() -> Au {
match self {
SimpleGlyphInfo(store, entry_i) => store.entry_buffer[entry_i].advance(),
@ -534,13 +539,13 @@ impl GlyphStore {
match entry.is_simple() {
true => {
let proxy = SimpleGlyphInfo(self, i);
if !cb(i, proxy) { return false; }
cb(i, move proxy);
},
false => {
let glyphs = self.detail_store.get_detailed_glyphs_for_entry(i, entry.glyph_count());
for uint::range(0, glyphs.len()) |j| {
let proxy = DetailGlyphInfo(self, i, j as u16);
cb(i, proxy);
cb(i, move proxy);
}
}
}