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Add support for CGContextSetFontSmoothingStyle 

This enables narrower rendering of glyphs and it tends to look a bit
better. iTerm2 and Terminal both do this.
This commit is contained in:
Joe Wilm 2016-08-03 19:53:48 -07:00
parent 16ed2ddfe9
commit 874719580c
1 changed files with 13 additions and 1 deletions
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14
font/src/darwin/mod.rs
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@ -37,7 +37,7 @@ use core_text::font_descriptor::kCTFontHorizontalOrientation;
use core_text::font_descriptor::kCTFontVerticalOrientation;
use core_text::font_descriptor::{CTFontDescriptor, CTFontDescriptorRef, CTFontOrientation};
use libc::size_t;
use libc::{size_t, c_int};
use euclid::point::Point2D;
use euclid::rect::Rect;
@ -279,6 +279,10 @@ impl Font {
rasterized_height as f64));
cg_context.fill_rect(context_rect);
// Uses thin strokes
// TODO make this configurable since it's undesirable on non-retina displays.
cg_context.set_font_smoothing_style(16);
cg_context.set_allows_font_smoothing(true);
cg_context.set_should_smooth_fonts(true);
cg_context.set_allows_font_subpixel_quantization(true);
@ -342,6 +346,7 @@ pub trait CGContextExt {
fn show_glyphs_at_positions(&self, &[CGGlyph], &[CGPoint]);
fn set_font(&self, &CGFont);
fn set_font_size(&self, size: f64);
fn set_font_smoothing_style(&self, style: i32);
}
impl CGContextExt for CGContext {
@ -415,6 +420,12 @@ impl CGContextExt for CGContext {
CGContextSetFontSize(self.as_concrete_TypeRef(), size as CGFloat);
}
}
fn set_font_smoothing_style(&self, style: i32) {
unsafe {
CGContextSetFontSmoothingStyle(self.as_concrete_TypeRef(), style as _);
}
}
}
#[link(name = "ApplicationServices", kind = "framework")]
@ -431,6 +442,7 @@ extern {
positions: *const CGPoint, count: size_t);
fn CGContextSetFont(c: CGContextRef, font: CGFontRef);
fn CGContextSetFontSize(c: CGContextRef, size: CGFloat);
fn CGContextSetFontSmoothingStyle(c: CGContextRef, style: c_int);
}
#[cfg(test)]