Mirrors/servo
1
0
Fork 0
mirror of https://github.com/servo/servo.git synced 2025-08-10 16:05:43 +01:00
Code Issues Projects Releases Packages Wiki Activity

Format gfx platform #21373

Browse source
This commit is contained in:
kingdido999 2018-09-05 08:39:05 +08:00
parent 5063ac465b
commit c57c99d9f7
13 changed files with 496 additions and 372 deletions
Download patch file Download diff file Expand all files Collapse all files

94
components/gfx/platform/macos/font.rs
View file

@ -3,7 +3,6 @@
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/// Implementation of Quartz (CoreGraphics) fonts.
use app_units::Au;
use byteorder::{BigEndian, ByteOrder};
use core_foundation::base::CFIndex;
@ -111,8 +110,8 @@ impl FontHandle {
return None;
}
let pt_per_font_unit = self.ctfont.pt_size() as f64 /
self.ctfont.units_per_em() as f64;
let pt_per_font_unit =
self.ctfont.pt_size() as f64 / self.ctfont.units_per_em() as f64;
result.px_per_font_unit = pt_to_px(pt_per_font_unit);
}
start = end;
@ -160,15 +159,15 @@ impl fmt::Debug for CachedKernTable {
}
}
impl FontHandleMethods for FontHandle {
fn new_from_template(_fctx: &FontContextHandle,
template: Arc<FontTemplateData>,
pt_size: Option<Au>)
-> Result<FontHandle, ()> {
fn new_from_template(
_fctx: &FontContextHandle,
template: Arc<FontTemplateData>,
pt_size: Option<Au>,
) -> Result<FontHandle, ()> {
let size = match pt_size {
Some(s) => s.to_f64_px(),
None => 0.0
None => 0.0,
};
match template.ctfont(size) {
Some(ref ctfont) => {
@ -181,13 +180,11 @@ impl FontHandleMethods for FontHandle {
handle.h_kern_subtable = handle.find_h_kern_subtable();
// TODO (#11310): Implement basic support for GPOS and GSUB.
handle.can_do_fast_shaping = handle.h_kern_subtable.is_some() &&
handle.table_for_tag(GPOS).is_none() &&
handle.table_for_tag(GSUB).is_none();
handle.table_for_tag(GPOS).is_none() &&
handle.table_for_tag(GSUB).is_none();
Ok(handle)
}
None => {
Err(())
}
},
None => Err(()),
}
}
@ -213,13 +210,13 @@ impl FontHandleMethods for FontHandle {
}
fn boldness(&self) -> FontWeight {
let normalized = self.ctfont.all_traits().normalized_weight(); // [-1.0, 1.0]
// TODO(emilio): It may make sense to make this range [.01, 10.0], to
// align with css-fonts-4's range of [1, 1000].
let normalized = self.ctfont.all_traits().normalized_weight(); // [-1.0, 1.0]
// TODO(emilio): It may make sense to make this range [.01, 10.0], to
// align with css-fonts-4's range of [1, 1000].
let normalized = if normalized <= 0.0 {
4.0 + normalized * 3.0 // [1.0, 4.0]
4.0 + normalized * 3.0 // [1.0, 4.0]
} else {
4.0 + normalized * 5.0 // [4.0, 9.0]
4.0 + normalized * 5.0 // [4.0, 9.0]
}; // [1.0, 9.0], centered on 4.0
FontWeight(normalized as f32 * 100.)
}
@ -228,7 +225,7 @@ impl FontHandleMethods for FontHandle {
use style::values::computed::Percentage;
use style::values::generics::NonNegative;
let normalized = self.ctfont.all_traits().normalized_width(); // [-1.0, 1.0]
let normalized = self.ctfont.all_traits().normalized_width(); // [-1.0, 1.0]
FontStretch(NonNegative(Percentage(normalized as f32 + 1.0)))
}
@ -237,9 +234,9 @@ impl FontHandleMethods for FontHandle {
let mut glyphs: [CGGlyph; 1] = [0 as CGGlyph];
let count: CFIndex = 1;
let result = self.ctfont.get_glyphs_for_characters(&characters[0],
&mut glyphs[0],
count);
let result = self
.ctfont
.get_glyphs_for_characters(&characters[0], &mut glyphs[0], count);
if !result {
// No glyph for this character
@ -265,10 +262,12 @@ impl FontHandleMethods for FontHandle {
fn glyph_h_advance(&self, glyph: GlyphId) -> Option<FractionalPixel> {
let glyphs = [glyph as CGGlyph];
let advance = self.ctfont.get_advances_for_glyphs(kCTFontDefaultOrientation,
&glyphs[0],
ptr::null_mut(),
1);
let advance = self.ctfont.get_advances_for_glyphs(
kCTFontDefaultOrientation,
&glyphs[0],
ptr::null_mut(),
1,
);
Some(advance as FractionalPixel)
}
@ -283,39 +282,42 @@ impl FontHandleMethods for FontHandle {
let line_gap = (ascent + descent + leading + 0.5).floor();
let max_advance_width = au_from_pt(bounding_rect.size.width as f64);
let average_advance = self.glyph_index('0')
.and_then(|idx| self.glyph_h_advance(idx))
.map(Au::from_f64_px)
.unwrap_or(max_advance_width);
let average_advance = self
.glyph_index('0')
.and_then(|idx| self.glyph_h_advance(idx))
.map(Au::from_f64_px)
.unwrap_or(max_advance_width);
let metrics = FontMetrics {
underline_size: au_from_pt(self.ctfont.underline_thickness() as f64),
underline_size: au_from_pt(self.ctfont.underline_thickness() as f64),
// TODO(Issue #201): underline metrics are not reliable. Have to pull out of font table
// directly.
//
// see also: https://bugs.webkit.org/show_bug.cgi?id=16768
// see also: https://bugreports.qt-project.org/browse/QTBUG-13364
underline_offset: au_from_pt(self.ctfont.underline_position() as f64),
strikeout_size: Au(0), // FIXME(Issue #942)
strikeout_size: Au(0), // FIXME(Issue #942)
strikeout_offset: Au(0), // FIXME(Issue #942)
leading: au_from_pt(leading),
x_height: au_from_pt((self.ctfont.x_height() as f64) * scale),
em_size: em_size,
ascent: au_from_pt(ascent * scale),
descent: au_from_pt(descent * scale),
max_advance: max_advance_width,
average_advance: average_advance,
line_gap: Au::from_f64_px(line_gap),
leading: au_from_pt(leading),
x_height: au_from_pt((self.ctfont.x_height() as f64) * scale),
em_size: em_size,
ascent: au_from_pt(ascent * scale),
descent: au_from_pt(descent * scale),
max_advance: max_advance_width,
average_advance: average_advance,
line_gap: Au::from_f64_px(line_gap),
};
debug!("Font metrics (@{} pt): {:?}", self.ctfont.pt_size() as f64, metrics);
debug!(
"Font metrics (@{} pt): {:?}",
self.ctfont.pt_size() as f64,
metrics
);
metrics
}
fn table_for_tag(&self, tag: FontTableTag) -> Option<FontTable> {
let result: Option<CFData> = self.ctfont.get_font_table(tag);
result.and_then(|data| {
Some(FontTable::wrap(data))
})
result.and_then(|data| Some(FontTable::wrap(data)))
}
fn identifier(&self) -> Atom {