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path: root/font/src/ft/mod.rs
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2020-07-04Fix compilation on 32bit targetsKirill Chibisov
Fixes #3915.
2020-06-06Remove copyright notice from filesChristian Duerr
Keeping the license as part of every file bloats up the files unnecessarily and introduces an additional overhead to the creation of new modules. Since cargo already provides excellent dependency management, most of the code-reuse of Alacritty should occur through Rust's dependency management instead of copying it source. If code is copied partially, copying the license from the main license file should be just as easy as copying from the top of the file and making some adjustments based on where it is used is likely necessary anyways.
2020-05-14Add support for Fontconfig embolden and matrix optionsKirill Chibisov
Fixes #1754.
2020-05-05Extend style guideline documentationChristian Duerr
2020-03-17Use font style for fontconfig fallbackKirill Chibisov
2020-03-12Run clippy on oldest supported versionChristian Duerr
Since there were some problems with clippy suggesting changes that were not yet available in the oldest supported Rust compiler of Alacritty, the clippy stage has been moved from stable to 1.37.0.
2020-03-06Fix caching of variable font facesKirill Chibisov
2020-02-27Revert caching of font pixelsizeKirill Chibisov
We can't reliably do that, because some fonts are bitmap, but marked as scalable by Fontconfig. Fixes #3387.
2020-02-26Add FreeType face cacheKirill Chibisov
2020-02-23Fix Fontconfig's font size queryKirill Chibisov
Previously we were rounding pattern's `pixelsize` before `fc_sort`, however we were using not rounded one in `get_glyph`, so bitmap fonts could look a bit smaller when used in a mix with scalable fonts.
2020-02-20Fix discarding of FreeType loading flagsKirill Chibisov
Fixes regression introduced in 6b327b6f8f0f308ff8f46cdf551ce0d0f3eda60b. Fixes #3355.
2020-02-03Fix non-scalable font resize issueKirill Chibisov
Fixes resize regression from 15cc07c069b09f109ed18fb94e02e9650be7fa33.
2020-01-31Fix handling of OpenType variable fontsKirill Chibisov
Fixes #3257.
2020-01-27Rework Fontconfig fallback to use cached list from font_sortKirill Chibisov
Previous implementation was querying Fontconfig using `charset` in a pattern, which was leading to unpredictable fallbacks in some cases, since Fontconfig was picking the font with the most coverage for a given charset, regardless of user configuration. Moreover all fallback was based on font_match which is extremely slow for such performance sensitive task as a fallback, so alacritty had a hard times on vtebench's unicode-random-write. The new approach is to use some internal fallback list from font_sort and iterate over it to get a proper fallback font, since it matches the following example query from `fc-match`: `fc-match -s "monospace:pixelsize=X:style=Y" That being said it's more intuitive for users to setup their system Fontconfig fallback, and also most applications are doing similar things. Moreover the new implementation uses internal caches over Fontconfig API when possible and performs font matches only once during load of requested font with font_sort, which leads to dramatically improved performance on already mentioned vtebench's unicode-random-write. Fixes #3176. Fixes #3134. Fixes #2657. Fixes #1560. Fixes #965. Fixes #511.
2020-01-22Fix underline position for bitmap fontsKirill Chibisov
Fixes #3235.
2020-01-17Replace `.nth(0)` with `.next()`Cole Helbling
Clippy[1] says that `.next()` is more readable than `.nth(0)`. [1]: https://rust-lang.github.io/rust-clippy/master/index.html#iter_nth_zero
2020-01-15Update font crate to 2018 editionDavid Hewitt
2020-01-03Replace deprecated Error methodssterlingjensen
2019-12-09Add support for colored emojis on Linux/BSDKirill Chibisov
Fixes #153.
2019-10-05Update to winit/glutin EventLoop 2.0Christian Duerr
This takes the latest glutin master to port Alacritty to the EventLoop 2.0 rework. This changes a big part of the event loop handling by pushing the event loop in a separate thread from the renderer and running both in parallel. Fixes #2796. Fixes #2694. Fixes #2643. Fixes #2625. Fixes #2618. Fixes #2601. Fixes #2564. Fixes #2456. Fixes #2438. Fixes #2334. Fixes #2254. Fixes #2217. Fixes #1789. Fixes #1750. Fixes #1125.
2019-07-23Respect fontconfig's embeddedbitmap settingRoman Holovin
Fixes #2655.
2019-06-09Fix compiler warningsMatthias Krüger
2019-04-20Fix cursor colorsChristian Duerr
This fixes a recent regression in cfc20d4f34dca535654cc32df18e785296af4cc5 which broke cursor colors when specified in the `colors.cursor` field in the config. It also removes a lot of unneeded code from the font crate related to the cursor rendering. This fixes #2338.
2019-03-30Add rustfmt style guidev0.3.0-rc1Christian Duerr
2019-01-07Normalize Log Message StringsNathan Lilienthal
The general style for errors, warnings and info messages is to start with a capitalized letter and end without a period. The main exception is when dealing with nouns that are clearer with special case handling, e.g. "macOS failed to work" or "ioctl is borked".
2018-12-31Fix line metricsChristian Duerr
Since bitmap fonts do not provide their own underline metrics, the self-calculated metrics which have been used for rusttype are now also used for bitmap fonts with freetype. The rusttype and bitmap fallback metrics have incorrectly offset the underline by the underline height. Since the position is already defined as the center point, that is not necessary. All rounding and clamping has also been removed from the font library, so that the raw values are reported now. The clamping and rounding is now done in the line renderer.
2018-12-22Add proper underline and strikeout supportChristian Duerr
This makes use of the new rectangle rendering methods used to display the colored visual bell to add proper underline and strikeout support to Alacritty.
2018-12-10Upgrade to Rust 2018Joe Wilm
This resolves a lot of NLL issues, however full NLL will be necessary to handle a couple of remaining issues.
2018-11-10Upgrade Glutin to v0.19.0Matt Keeler
Some changes include: • Use the with_hardware_acceleration function on the ContextBuilder to not require the discrete GPU • Remove the LMenu and RMenu virtual key codes (winit 0.16.0 removed these because Windows now generates LAlt and RAlt instead • Replace set_cursor_state with hide_cursor (winit 0.16.0 removed the set_cursor_state function) • Replace GlWindow::hidpi_factor with GlWindow::get_hidpi_factor and change to expecting an f64 • Use the glutin/winit dpi size and position types where possible Glutin's dpi change event has been implemented. All size events now return logical sizes. As a result of that, the logical sizes are translated in the `display::handle_rezize` method so DPI scaling works correctly. When the DPI is changed, the glyph cache is updated to make use of the correct font size again. Moving a window to a different screen which is a different DPI caused a racing condition where the logical size of the event was sent to the `handle_resize` method in `src/display.rs`, however if there was a DPI change event before `handle_resize` is able to process this message, it would incorrectly use the new DPI to scale the resize event. To solve this issue instead of sending the logical size to the `handle_resize` method and then converting it to a physical size in there, the `LogicalSize` of the resize event is transformed into a `PhysicalSize` as soon as it's received. This fixes potential racing conditions since all events are processed in order. The padding has been changed so it's also scaled by DPR. The `scale_with_dpi` config option has been removed. If it's not present a warning will be emitted. The `winit` dependency on Windows has been removed. All interactions with winit in Alacritty are handled through glutin.
2018-10-16Add support for Windows (#1374)Zac Pullar-Strecker
Initial support for Windows is implemented using the winpty translation layer. Clipboard support for Windows is provided through the `clipboard` crate, and font rasterization is provided by RustType. The tty.rs file has been split into OS-specific files to separate standard pty handling from the winpty implementation. Several binary components are fetched via build script on windows including libclang and winpty. These could be integrated more directly in the future either by building those dependencies as part of the Alacritty build process or by leveraging git lfs to store the artifacts. Fixes #28.
2018-09-30Bump fontconfig dependenciesJon Gjengset
The patch uses the Cargo.toml patch section to force a single downstream choice of freetype-sys instead of relying on forks of other crates. It also bumps the fontconfig/freetype dependencies in the process.
2018-07-21Add support for LCD-V pixel modeyshui
2018-07-02Enable clippy in font/copypasta cratesMatthias Krüger
Enabled clippy in the sub-crates font and copypasta. All issues that were discovered by this change have also been fixed.
2018-07-01Fix clippy issuesChristian Duerr
2018-06-17Move to cargo clippyChristian Duerr
Using clippy as a library has been deprecated, instead the `cargo clippy` command should be used instead. To comply with this change clippy has been removed from the `Cargo.toml` and is now installed with cargo when building in CI. This has also lead to a few new clippy issues to show up, this includes everything in the `font` subdirectory. This has been fixed and `font` should now be covered by clippy CI too. This also upgrades all dependencies, as a result this fixes #1341 and this fixes #1344.
2018-01-21Better character cell width with FreeType (#1029)Rachel K
This should fix #1020, #710, and #902
2017-12-24Move custom cursor block on ftChristian Dürr
Moved the custom cursor block on ft to the top, so no unnecessary operations are executed when trying to draw a custom cursor glyph.
2017-12-24Use font_key provided with cursor glyphsChristian Dürr
Previously it was assumed that the font_key for the normal font is always 0, because this assumption was a bit of a stretch, now the font_key provided with the glyph is used. This is always the bold, italics or normal font associated with the cell.
2017-12-24Fix linux symbol sizeChristian Duerr
With linux every box, line or underline should now have the pixel-perfect size with any font at any size. This uses the default font to get the size of the monospace box. It assumes that the face 0 is always the primary font, if this is not the case, this will probably break.
2017-12-24Add custom box cursor for unfocused windowChristian Duerr
2017-12-24Format cursor code and add documentationChristian Duerr
As requested a few comments have been added to the darwin code. There also was an off by one error in the ascent calculation which has been corrected. The beam cursor width has also been tweaked to be slightly slimmer in general. All code added in this PR has also been run through the default rustfmt to make sure the formatting is okay.
2017-12-24Add custom beam cursorChristian Duerr
In issue jwilm/asacritty#31 a few people complained about Beam cursor being weird with their fonts, so to make all cursors uniform in alacritty, a custom cursor has been added for the Beam too. The beam cursor's height is always the full height of the monospace font glyph bounding box. The width depends on the font size. It is calculated using the width of the cell and dividing it by two. The block is always aligned at the far-left of the cell. The implementation is identical to the one of the underline cursor, but it has been refactored so the glyphs are created in `lib.rs`, which can be used by darwin/macos to implement these features too. A small bug in the underline cursor has also been fixed, until now the width was just using the width of the unicode character. Now it should be using the full width of the monospace glyph bounding box with every font. Here are some screenshots for the Beam cursor: ![Small](https://u.teknik.io/v1QH3.png) ![Normal](https://u.teknik.io/RTlp2.png) ![Big](https://u.teknik.io/DLu2M.png) ![Huge](https://u.teknik.io/pSAFX.png)
2017-12-24Revert to old system for macosChristian Duerr
Because rendering with macos works differently, the old underline cursor is used for that. The cursor symbol has also been setup as a constant in the font project.
2017-12-24Add custom underline cursorChristian Duerr
As mentioned in jwilm/alacritty#931, it can be troublesome if a font has an underline symbol outside of the glyph's bounding box. This can lead to the underline disappearing at the bottom of the terminal. As a solution a symbol from the private use area was used as the character code for the underline symbol. Whenever this symbol is encountered, instead of rendering it, a custom block is rendered. In this implementation the block has the full character as width and sits flush with the bottom of the glyph's bounding box. The height is half the distance between the baseline and the bottom of the bounding box.
2017-10-30fix some typos in commentsMartin Lindhe
2017-10-14Fix memory leak from font resizingJoe Wilm
The source of the leak was loading up multiple copies of the FT_face even when not necessary. Fonts are now appropriately cached for FreeType when going through the `Rasterize::load_font` API. Additionally, textures in the glyph cache are now reused. The result of this is that resizing to already loaded fonts is free from a memory consumption perspective.
2017-10-08Scale all fonts based on device-pixel-ratioJoe Wilm
Rather than use DPI from config, use device-pixel-ratio from winit. This is computed using the display DPI anyhow, so it should have the same effect.
2017-10-08Support bitmap fontsDan Aloni
To allow FontConfig to work with Bitmap font, we shall pass the size we are interested in, and account for the size returned in the font matching process. This is, because we cannot scale those fonts. FontConfig will return the closest match, and we take its returned pixel size back when we are rendering the glyphs. There's an oddity when call set_char_size in TrueType - we need to behave as if the DPI is 72. It is due to the following macro: #define FT_REQUEST_HEIGHT( req ) \ ( (req)->vertResolution \ ? ( (req)->height * (FT_Pos)(req)->vertResolution + 36 ) / 72 \ : (req)->height ) Further work can allow for integer scaling of the largest bitmap font variant. Tested with Terminus PCF-type font under Linux. This addresses issue #582 .
2017-10-08FreeType rasterizer respects some fontconfigJoe Wilm
The FreeType rasterizer now reads settings like antialias, rgba, lcdfilter, and hintstyle and chooses FreeType settings accordingly. The result is that Alacritty fonts should look similar to the rest of the system.
2017-10-08Improve glyph rasterization performanceJoe Wilm
The hash map of key -> face was previouly cloned every time a glyph was rasterized. This refactored the rasterization path to be more borrowck friendly. Sadly, this implementation is not *that* clean, but once NLLs land, much of this can be cleaned up.