From a0270d9774184755cbf6e42457c38343c3d28fff Mon Sep 17 00:00:00 2001 From: Christian Duerr Date: Fri, 16 Feb 2018 22:21:48 +0100 Subject: [PATCH] Add proper strikeout positioning With this change the strikeout should make proper use of the metrics in the OS2 table. These metrics are available for all TTF and OTF fonts. If the metrics are not supplied, a fallback strikeout based on underline thickness and cell height is used. To go in line with the metrics supplied by the OS2 table, the term of `strikethrough` has been replaced with `strikeout` everywhere. I think it makes sense to go forward with using `strikeout` in general when talking about this. There has also been a small bug where the cell would not be underlined/striked out when an underline is broken over multiple lines. This has been fixed and the underline/strikeout should always be applied to each cell with this flag. --- Cargo.lock | 228 ++++++++++++++++------------------- font/Cargo.lock | 287 ++++++++++++++++++++++++++++++++++++++++++++ font/src/ft/mod.rs | 22 ++++ font/src/lib.rs | 2 + src/display.rs | 64 +++++----- src/renderer/mod.rs | 2 +- src/term/cell.rs | 4 +- src/term/mod.rs | 4 +- 8 files changed, 452 insertions(+), 161 deletions(-) create mode 100644 font/Cargo.lock diff --git a/Cargo.lock b/Cargo.lock index f1ac3b3a..9d7a8914 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -14,18 +14,18 @@ dependencies = [ "base64 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)", "bitflags 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)", "cgmath 0.16.0 (registry+https://github.com/rust-lang/crates.io-index)", - "clap 2.29.2 (registry+https://github.com/rust-lang/crates.io-index)", - "clippy 0.0.184 (registry+https://github.com/rust-lang/crates.io-index)", + "clap 2.30.0 (registry+https://github.com/rust-lang/crates.io-index)", + "clippy 0.0.186 (registry+https://github.com/rust-lang/crates.io-index)", "copypasta 0.0.1", "env_logger 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)", "errno 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)", "fnv 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)", "font 0.1.0", "gl_generator 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)", - "glutin 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)", + "glutin 0.12.2 (registry+https://github.com/rust-lang/crates.io-index)", "libc 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)", "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)", - "mio 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)", + "mio 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)", "mio-more 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)", "notify 4.0.3 (registry+https://github.com/rust-lang/crates.io-index)", "objc 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)", @@ -148,7 +148,7 @@ name = "cgl" version = "0.2.1" source = "registry+https://github.com/rust-lang/crates.io-index" dependencies = [ - "gleam 0.4.20 (registry+https://github.com/rust-lang/crates.io-index)", + "gleam 0.4.21 (registry+https://github.com/rust-lang/crates.io-index)", "libc 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)", ] @@ -158,7 +158,7 @@ version = "0.16.0" source = "registry+https://github.com/rust-lang/crates.io-index" dependencies = [ "approx 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)", - "num-traits 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)", + "num-traits 0.1.43 (registry+https://github.com/rust-lang/crates.io-index)", "rand 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)", ] @@ -167,19 +167,19 @@ name = "chrono" version = "0.4.0" source = "registry+https://github.com/rust-lang/crates.io-index" dependencies = [ - "num 0.1.41 (registry+https://github.com/rust-lang/crates.io-index)", + "num 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)", "time 0.1.39 (registry+https://github.com/rust-lang/crates.io-index)", ] [[package]] name = "clap" -version = "2.29.2" +version = "2.30.0" source = "registry+https://github.com/rust-lang/crates.io-index" dependencies = [ "ansi_term 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)", "atty 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)", "bitflags 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)", - "strsim 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)", + "strsim 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)", "textwrap 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)", "unicode-width 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)", "vec_map 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)", @@ -187,17 +187,17 @@ dependencies = [ [[package]] name = "clippy" -version = "0.0.184" +version = "0.0.186" source = "registry+https://github.com/rust-lang/crates.io-index" dependencies = [ "cargo_metadata 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)", - "clippy_lints 0.0.184 (registry+https://github.com/rust-lang/crates.io-index)", - "regex 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)", + "clippy_lints 0.0.186 (registry+https://github.com/rust-lang/crates.io-index)", + "regex 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)", ] [[package]] name = "clippy_lints" -version = "0.0.184" +version = "0.0.186" source = "registry+https://github.com/rust-lang/crates.io-index" dependencies = [ "if_chain 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)", @@ -235,6 +235,18 @@ dependencies = [ "objc 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)", ] +[[package]] +name = "cocoa" +version = "0.14.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +dependencies = [ + "bitflags 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)", + "block 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)", + "core-graphics 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)", + "libc 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)", + "objc 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)", +] + [[package]] name = "copypasta" version = "0.0.1" @@ -302,7 +314,7 @@ dependencies = [ [[package]] name = "core-text" -version = "9.1.0" +version = "9.2.0" source = "registry+https://github.com/rust-lang/crates.io-index" dependencies = [ "core-foundation 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)", @@ -324,15 +336,6 @@ name = "dtoa" version = "0.4.2" source = "registry+https://github.com/rust-lang/crates.io-index" -[[package]] -name = "dwmapi-sys" -version = "0.1.1" -source = "registry+https://github.com/rust-lang/crates.io-index" -dependencies = [ - "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)", - "winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)", -] - [[package]] name = "either" version = "1.4.0" @@ -346,8 +349,8 @@ dependencies = [ "atty 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)", "chrono 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)", "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)", - "regex 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)", - "termcolor 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)", + "regex 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)", + "termcolor 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)", ] [[package]] @@ -365,7 +368,7 @@ name = "euclid" version = "0.16.4" source = "registry+https://github.com/rust-lang/crates.io-index" dependencies = [ - "num-traits 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)", + "num-traits 0.1.43 (registry+https://github.com/rust-lang/crates.io-index)", "serde 1.0.27 (registry+https://github.com/rust-lang/crates.io-index)", ] @@ -400,7 +403,7 @@ dependencies = [ "core-foundation 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)", "core-foundation-sys 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)", "core-graphics 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)", - "core-text 9.1.0 (registry+https://github.com/rust-lang/crates.io-index)", + "core-text 9.2.0 (registry+https://github.com/rust-lang/crates.io-index)", "euclid 0.16.4 (registry+https://github.com/rust-lang/crates.io-index)", "foreign-types 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)", "freetype-rs 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)", @@ -474,15 +477,6 @@ name = "fuchsia-zircon-sys" version = "0.3.3" source = "registry+https://github.com/rust-lang/crates.io-index" -[[package]] -name = "gdi32-sys" -version = "0.1.2" -source = "registry+https://github.com/rust-lang/crates.io-index" -dependencies = [ - "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)", - "winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)", -] - [[package]] name = "getopts" version = "0.2.17" @@ -490,56 +484,51 @@ source = "registry+https://github.com/rust-lang/crates.io-index" [[package]] name = "gl_generator" -version = "0.7.0" +version = "0.8.0" source = "registry+https://github.com/rust-lang/crates.io-index" dependencies = [ - "khronos_api 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)", + "khronos_api 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)", "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)", "xml-rs 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)", ] [[package]] name = "gl_generator" -version = "0.8.0" +version = "0.9.0" source = "registry+https://github.com/rust-lang/crates.io-index" dependencies = [ - "khronos_api 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)", - "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)", + "khronos_api 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)", + "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)", "xml-rs 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)", ] [[package]] name = "gleam" -version = "0.4.20" +version = "0.4.21" source = "registry+https://github.com/rust-lang/crates.io-index" dependencies = [ - "gl_generator 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)", + "gl_generator 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)", "pkg-config 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)", ] [[package]] name = "glutin" -version = "0.12.0" +version = "0.12.2" source = "registry+https://github.com/rust-lang/crates.io-index" dependencies = [ "android_glue 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)", "cgl 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)", - "cocoa 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)", - "core-foundation 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)", - "core-graphics 0.12.4 (registry+https://github.com/rust-lang/crates.io-index)", - "dwmapi-sys 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)", - "gdi32-sys 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)", - "gl_generator 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)", - "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)", + "cocoa 0.14.0 (registry+https://github.com/rust-lang/crates.io-index)", + "core-foundation 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)", + "core-graphics 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)", + "gl_generator 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)", "lazy_static 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)", "libc 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)", "objc 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)", "osmesa-sys 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)", "shared_library 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)", - "shell32-sys 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)", - "user32-sys 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)", "wayland-client 0.12.5 (registry+https://github.com/rust-lang/crates.io-index)", - "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)", + "winapi 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)", "winit 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)", "x11-dl 2.17.2 (registry+https://github.com/rust-lang/crates.io-index)", ] @@ -600,7 +589,7 @@ dependencies = [ [[package]] name = "khronos_api" -version = "2.0.0" +version = "2.1.0" source = "registry+https://github.com/rust-lang/crates.io-index" [[package]] @@ -713,7 +702,7 @@ dependencies = [ [[package]] name = "mio" -version = "0.6.12" +version = "0.6.13" source = "registry+https://github.com/rust-lang/crates.io-index" dependencies = [ "fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)", @@ -736,7 +725,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index" dependencies = [ "lazycell 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)", "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)", - "mio 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)", + "mio 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)", "slab 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)", ] @@ -801,40 +790,48 @@ dependencies = [ "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)", "libc 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)", "mio 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)", - "walkdir 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)", + "walkdir 2.1.3 (registry+https://github.com/rust-lang/crates.io-index)", "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)", ] [[package]] name = "num" -version = "0.1.41" +version = "0.1.42" source = "registry+https://github.com/rust-lang/crates.io-index" dependencies = [ - "num-integer 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)", - "num-iter 0.1.34 (registry+https://github.com/rust-lang/crates.io-index)", - "num-traits 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)", + "num-integer 0.1.36 (registry+https://github.com/rust-lang/crates.io-index)", + "num-iter 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)", + "num-traits 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)", ] [[package]] name = "num-integer" -version = "0.1.35" +version = "0.1.36" source = "registry+https://github.com/rust-lang/crates.io-index" dependencies = [ - "num-traits 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)", + "num-traits 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)", ] [[package]] name = "num-iter" -version = "0.1.34" +version = "0.1.35" source = "registry+https://github.com/rust-lang/crates.io-index" dependencies = [ - "num-integer 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)", - "num-traits 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)", + "num-integer 0.1.36 (registry+https://github.com/rust-lang/crates.io-index)", + "num-traits 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)", ] [[package]] name = "num-traits" -version = "0.1.42" +version = "0.1.43" +source = "registry+https://github.com/rust-lang/crates.io-index" +dependencies = [ + "num-traits 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)", +] + +[[package]] +name = "num-traits" +version = "0.2.0" source = "registry+https://github.com/rust-lang/crates.io-index" [[package]] @@ -890,16 +887,16 @@ version = "0.5.3" source = "registry+https://github.com/rust-lang/crates.io-index" dependencies = [ "owning_ref 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)", - "parking_lot_core 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)", + "parking_lot_core 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)", ] [[package]] name = "parking_lot_core" -version = "0.2.10" +version = "0.2.11" source = "registry+https://github.com/rust-lang/crates.io-index" dependencies = [ "libc 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)", - "rand 0.3.20 (registry+https://github.com/rust-lang/crates.io-index)", + "rand 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)", "smallvec 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)", "winapi 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)", ] @@ -935,11 +932,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index" [[package]] name = "rand" -version = "0.3.20" +version = "0.3.22" source = "registry+https://github.com/rust-lang/crates.io-index" dependencies = [ "fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)", "libc 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)", + "rand 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)", ] [[package]] @@ -967,7 +965,7 @@ dependencies = [ [[package]] name = "regex" -version = "0.2.5" +version = "0.2.6" source = "registry+https://github.com/rust-lang/crates.io-index" dependencies = [ "aho-corasick 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)", @@ -1042,7 +1040,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index" dependencies = [ "dtoa 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)", "itoa 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)", - "num-traits 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)", + "num-traits 0.1.43 (registry+https://github.com/rust-lang/crates.io-index)", "serde 1.0.27 (registry+https://github.com/rust-lang/crates.io-index)", ] @@ -1052,7 +1050,7 @@ version = "0.7.3" source = "registry+https://github.com/rust-lang/crates.io-index" dependencies = [ "linked-hash-map 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)", - "num-traits 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)", + "num-traits 0.1.43 (registry+https://github.com/rust-lang/crates.io-index)", "serde 1.0.27 (registry+https://github.com/rust-lang/crates.io-index)", "yaml-rust 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)", ] @@ -1085,15 +1083,6 @@ dependencies = [ "libc 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)", ] -[[package]] -name = "shell32-sys" -version = "0.1.2" -source = "registry+https://github.com/rust-lang/crates.io-index" -dependencies = [ - "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)", - "winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)", -] - [[package]] name = "slab" version = "0.1.3" @@ -1116,7 +1105,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index" [[package]] name = "strsim" -version = "0.6.0" +version = "0.7.0" source = "registry+https://github.com/rust-lang/crates.io-index" [[package]] @@ -1144,17 +1133,17 @@ source = "registry+https://github.com/rust-lang/crates.io-index" dependencies = [ "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)", "libc 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)", - "rand 0.3.20 (registry+https://github.com/rust-lang/crates.io-index)", + "rand 0.3.22 (registry+https://github.com/rust-lang/crates.io-index)", "redox_syscall 0.1.37 (registry+https://github.com/rust-lang/crates.io-index)", "winapi 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strikeout + trace!("No strikeout data available for font, using fallback."); + let strikeout_position = height as f32 / 2. + descent; + (strikeout_position, underline_thickness) + }, + }; + Ok(Metrics { average_advance: full.cell_width, line_height: height, descent: descent, underline_position, underline_thickness, + strikeout_position, + strikeout_thickness, }) } diff --git a/font/src/lib.rs b/font/src/lib.rs index 7a8ac7a7..08fbbad6 100644 --- a/font/src/lib.rs +++ b/font/src/lib.rs @@ -316,6 +316,8 @@ pub struct Metrics { pub descent: f32, pub underline_position: f32, pub underline_thickness: f32, + pub strikeout_position: f32, + pub strikeout_thickness: f32, } pub trait Rasterize { diff --git a/src/display.rs b/src/display.rs index f6d0e7cd..24b34694 100644 --- a/src/display.rs +++ b/src/display.rs @@ -365,10 +365,10 @@ impl Display { api.clear(background_color); } - // Store underline/strikethrough information beyond current cell + // Store underline/strikeout information beyond current cell let mut last_cell = None; let mut start_underline: Option = None; - let mut start_strikethrough: Option = None; + let mut start_strikeout: Option = None; // Iterate over all non-empty cells in the grid for cell in terminal.renderable_cells(config, selection, window_focused) { @@ -384,19 +384,19 @@ impl Display { cell_line_rects.push(underline); } - // Check if there is a new strikethrough - if let Some(strikethrough) = calculate_cell_line_state( + // Check if there is a new strikeout + if let Some(strikeout) = calculate_cell_line_state( cell, - &mut start_strikethrough, + &mut start_strikeout, &last_cell, &metrics, &size_info, - cell::Flags::STRIKE_THROUGH, + cell::Flags::STRIKEOUT, ) { - cell_line_rects.push(strikethrough); + cell_line_rects.push(strikeout); } - // Change the last checked cell for underline/strikethrough + // Change the last checked cell for underline/strikeout last_cell = Some(cell); // Draw the cell @@ -415,14 +415,14 @@ impl Display { ); } - // If strikethrough hasn't been reset, draw until the last cell - if let Some(start) = start_strikethrough { + // If strikeout hasn't been reset, draw until the last cell + if let Some(start) = start_strikeout { cell_line_rects.push( cell_line_rect( &start, &last_cell.unwrap(), &metrics, &size_info, - cell::Flags::STRIKE_THROUGH + cell::Flags::STRIKEOUT ) ); } @@ -482,8 +482,8 @@ impl Display { } } -// Check if the underline/strikethrough state has changed -// This returns a new rectangle whenever an underline/strikethrough ends +// Check if the underline/strikeout state has changed +// This returns a new rectangle whenever an underline/strikeout ends fn calculate_cell_line_state( cell: RenderableCell, start_cell_line: &mut Option, @@ -504,8 +504,7 @@ fn calculate_cell_line_state( } // Check if we need to start a new line - // because the cell color has changed - *start_cell_line = if cell.fg != start.fg && cell.flags.contains(flag) { + *start_cell_line = if cell.flags.contains(flag) { // Start a new line Some(cell) } else { @@ -525,7 +524,7 @@ fn calculate_cell_line_state( None } -// Create a colored rectangle for an underline/strikethrough based on two cells +// Create a colored rectangle for an underline/strikeout based on two cells fn cell_line_rect( start: &RenderableCell, end: &RenderableCell, @@ -537,26 +536,29 @@ fn cell_line_rect( let end_x = ((end.column.0 + 1) as f64 * metrics.average_advance) as u32; let width = end_x - x; - let y = match flag { + let (y, height) = match flag { cell::Flags::UNDERLINE => { // Get the baseline positon and offset it down by (-) underline position // then move it up by half the underline thickness - ((start.line.0 as f32 + 1.) * metrics.line_height as f32 + metrics.descent - - metrics.underline_position - metrics.underline_thickness / 2.).round() as u32 - }, - cell::Flags::STRIKE_THROUGH => { - // Get half-way point between cell top and baseline - // Then offset it down by (-) underline position and - // move it up by half the underline thickness - // TODO: Moving the strikethrough down by underline thickness is a hack - ((start.line.0 as f32) * metrics.line_height as f32 - + (metrics.line_height as f32 + metrics.descent) / 2. - - metrics.underline_thickness / 2. - - metrics.underline_position).round() as u32 - }, + let y = ((start.line.0 as f32 + 1.) * metrics.line_height as f32 + metrics.descent + - metrics.underline_position + - metrics.underline_thickness / 2.) + .round() as u32; + let height = metrics.underline_thickness as u32; + (y, height) + } + cell::Flags::STRIKEOUT => { + // Get the baseline positon and offset it up by strikeout position + // then move it up by half the strikeout thickness + let y = ((start.line.0 as f32 + 1.) * metrics.line_height as f32 + metrics.descent + - metrics.strikeout_position + - metrics.strikeout_thickness / 2.) + .round() as u32; + let height = metrics.strikeout_thickness as u32; + (y, height) + } _ => panic!("Invalid flag for cell line drawing specified"), }; - let height = metrics.underline_thickness as u32; let rect = Rect::new(x + size.padding_x as u32, y + size.padding_y as u32, width, height); let color = start.fg; diff --git a/src/renderer/mod.rs b/src/renderer/mod.rs index c6e884b4..c19aca72 100644 --- a/src/renderer/mod.rs +++ b/src/renderer/mod.rs @@ -702,7 +702,7 @@ impl QuadRenderer { let rect = Rect::new(0, 0, *size.width, *size.height); self.render_rect(&rect, color, visual_bell_intensity as f32, size); - // Draw underlines and strikethroughs + // Draw underlines and strikeouts for cell_line_rect in cell_line_rects { self.render_rect(&cell_line_rect.0, cell_line_rect.1, 255., size); } diff --git a/src/term/cell.rs b/src/term/cell.rs index 75bbdb85..c7e10720 100644 --- a/src/term/cell.rs +++ b/src/term/cell.rs @@ -27,7 +27,7 @@ bitflags! { const WIDE_CHAR_SPACER = 0b0_0100_0000; const DIM = 0b0_1000_0000; const DIM_BOLD = 0b0_1000_0010; - const STRIKE_THROUGH = 0b1_0000_0000; + const STRIKEOUT = 0b1_0000_0000; } } @@ -104,7 +104,7 @@ impl Cell { pub fn is_empty(&self) -> bool { self.c == ' ' && self.bg == Color::Named(NamedColor::Background) && - !self.flags.intersects(Flags::INVERSE | Flags::UNDERLINE | Flags::STRIKE_THROUGH) + !self.flags.intersects(Flags::INVERSE | Flags::UNDERLINE | Flags::STRIKEOUT) } #[inline] diff --git a/src/term/mod.rs b/src/term/mod.rs index 12e665e2..8bc2b55b 100644 --- a/src/term/mod.rs +++ b/src/term/mod.rs @@ -1809,8 +1809,8 @@ impl ansi::Handler for Term { Attr::CancelItalic => self.cursor.template.flags.remove(cell::Flags::ITALIC), Attr::Underscore => self.cursor.template.flags.insert(cell::Flags::UNDERLINE), Attr::CancelUnderline => self.cursor.template.flags.remove(cell::Flags::UNDERLINE), - Attr::Strike => self.cursor.template.flags.insert(cell::Flags::STRIKE_THROUGH), - Attr::CancelStrike => self.cursor.template.flags.remove(cell::Flags::STRIKE_THROUGH), + Attr::Strike => self.cursor.template.flags.insert(cell::Flags::STRIKEOUT), + Attr::CancelStrike => self.cursor.template.flags.remove(cell::Flags::STRIKEOUT), _ => { debug!("Term got unhandled attr: {:?}", attr); }