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* Fix `font.glyph_offset` not live reloadingKirill Chibisov2022-03-11
| | | Fixes #5944.
* Use round instead of ceil for line positionKirill Chibisov2022-03-06
| | | | Ceiling line position results in strikeout line being lower than it should.
* Add fallback GLES2 rendererKirill Chibisov2022-03-02
| | | | | | | | | | | | | | | | | | | | | Currently Alacritty only works on hardware which supports OpenGL 3.3 or more, which can become problematic with older devices. This patch adds a new GLES2 renderer, since it is much more widely supported, especially on weaker hardware like phones or a Raspberry Pi. While the GLES2 renderer is slower than the OpenGL 3.3+ version, it is still significantly faster than software rendering. However because of this performance difference it is only used when necessary and there should be no difference for machines supporting OpenGL 3.3+. The two renderers are largely independent and separated in the `renderer/text/glsl3` and `renderer/text/gles2` modules. Separate shaders are also required for text rendering. The rectangle rendering for underlines and the visual bell works identically for both versions, but does have some version-specific shader code. Fixes #128. Co-authored-by: Christian Duerr <contact@christianduerr.com>
* Don't use 'origin_upper_left' in rect shadersKirill Chibisov2022-02-22
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* Don't load font twice during display creationKirill Chibisov2022-02-18
| | | | | This commit finishes the effort from a64553b to avoid reloading font twice during startup, since the original issue is with getting font metrics without building the glyph cache.
* Reuse Rasterizer in Display::newGreg Depoire--Ferrer2022-02-16
| | | | | | | Instead of creating a `Rasterizer` to guess the window dimensions, dropping it and then creating a new one for the glyph cache, reuse the same `Rasterizer`. This prevents the font from being loaded twice during startup.
* Add support for dashed and dotted underlinesKirill Chibisov2022-02-14
| | | | This finishes implementation of underline styles provided by `CSI 4 : [1-5] m` escape sequence.
* Add support for drawing undercurlsKirill Chibisov2022-02-08
| | | Fixes #1628.
* Fix builtin font block elements going invisibleKirill Chibisov2022-02-03
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* Add damage tracking and reporting to compatible compositorsKirill Chibisov2022-02-02
| | | | | | | | | | | | | | This allows compositors to only process damaged (that is, updated) regions of our window buffer, which for larger window sizes (think 4k) should significantly reduce compositing workload under compositors that support/honor it, which is good for performance, battery life and lower latency over remote connections like VNC. On Wayland, clients are expected to always report correct damage, so this makes us a good citizen there. It can also aid remote desktop (waypipe, rdp, vnc, ...) and other types of screencopy by having damage bubble up correctly. Fixes #3186.
* Clean up and abstract shader creation codeoxalica2022-01-30
| | | Co-authored-by: Christian Duerr <contact@christianduerr.com>
* Use cell width to compute builtin font thicknessKirill Chibisov2022-01-30
| | | | | | | | | | | While using underline thickness could sound logical to draw other lines most fonts don't make underlines thick compared to cell bounding box if you increase font size. So instead we're using cell width to scale builtin font nicely. This commit also adjusts arcs drawing and alignment. Fixes #5826. Fixes #5821.
* Account for font.offset and glyph.offset in built-in fontKirill Chibisov2022-01-29
| | | | This commit takes into account `font.offset` and `font.glyph_offset` when generating built-in font.
* Add option to control built-in box drawing charszandr2022-01-29
| | | | | This commit adds the config `font.builtin_box_drawing` option to control built-in font, which is enabled by default.
* Use builtin font for box drawing unicode charactersKirill Chibisov2022-01-06
| | | | | | | | | | | | This commit adds hand rolled drawing of unicode box drawing[1] and block elements[2] from ranges U+2500 up to U+259f. While using system font for such characters will look better most of the time, the characters tend to overlap or not align, so providing builtin font is the lesser evil here. [1] - https://www.unicode.org/charts/PDF/U2500.pdf [2] - https://www.unicode.org/charts/PDF/U2580.pdf Fixes #5485.
* Add parameters to `msg create-window` subcommandKirill Chibisov2021-11-22
| | | | | | | | | | | | | | | Alacritty's `msg create-window` subcommand would previously inherit all the CLI parameters from the original executable. However not only could this lead to unexpected behavior, it also prevents multi-window users from making use of parameters like `-e`, `--working-directory`, or `--hold`. This is solved by adding a JSON-based message format to the IPC socket messages which instructs the Alacritty server on which CLI parameters should be used to create the new window. Fixes #5562. Fixes #5561. Fixes #5560.
* Add multi-window supportChristian Duerr2021-10-23
| | | | | | | | | | | | | | | | | | | | | | | | | | Previously Alacritty would always initialize only a single terminal emulator window feeding into the winit event loop, however some platforms like macOS expect all windows to be spawned by the same process and this "daemon-mode" can also come with the advantage of increased memory efficiency. The event loop has been restructured to handle all window-specific events only by the event processing context with the associated window id. This makes it possible to add new terminal windows at any time using the WindowContext::new function call. Some preliminary tests have shown that for empty terminals, this reduces the cost of additional terminal emulators from ~100M to ~6M. However at this point the robustness of the daemon against issues with individual terminals has not been refined, making the reliability of this system questionable. New windows can be created either by using the new `CreateNewWindow` action, or with the `alacritty msg create-window` subcommand. The subcommand sends a message to an IPC socket which Alacritty listens on, its location can be found in the `ALACRITTY_SOCKET` environment variable. Fixes #607.
* Update rustfmt configurationChristian Duerr2021-10-11
| | | | | | | | | | | | | | | | | In this change I went through all current rustfmt configuration options and expanded our existing configuration with overrides whenever deemed appropriate. The `normalize_doc_attributes` option is still unstable, but seems to work without any issues. Even when passing macros like `include_str!` that is recognized properly and not normalized. So while this wasn't an issue anywhere in the code, it should make sure it never will be. When it comes to imports there are two new major additions. The `imports_granularity` and `group_imports` options. Both mostly just incorporate unwritten rules that have existed in Alacritty for a long time. Unfortunately since `alacritty_terminal` imports in `alacritty` are supposed to be separate blocks, the `group_imports` option cannot be used.
* Add option to apply opacity to all background colorsKirill Chibisov2021-08-16
| | | | | | | In some cases it could be desired to apply 'background_opacity' to all background colors instead of just 'colors.primary.background', thus adding an 'colors.opaque_background_colors' option to control that. Fixes #741.
* Fix clippy warningsChristian Duerr2021-07-03
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* Fix startup caching of bold glyphsChristian Duerr2021-05-20
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* Update crossfont to 0.3.0Christian Duerr2021-05-01
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* Unify the grid line indexing typesChristian Duerr2021-03-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previously Alacritty was using two different ways to reference lines in the terminal. Either a `usize`, or a `Line(usize)`. These indexing systems both served different purposes, but made it difficult to reason about logic involving these systems because of its inconsistency. To resolve this issue, a single new `Line(i32)` type has been introduced. All existing references to lines and points now rely on this definition of a line. The indexing starts at the top of the terminal region with the line 0, which matches the line 1 used by escape sequences. Each line in the history becomes increasingly negative and the bottommost line is equal to the number of visible lines minus one. Having a system which goes into the negatives allows following the escape sequence's indexing system closely, while at the same time making it trivial to implement `Ord` for points. The Alacritty UI crate is the only place which has a different indexing system, since rendering and input puts the zero line at the top of the viewport, rather than the top of the terminal region. All instances which refer to a number of lines/columns instead of just a single Line/Column have also been changed to use a `usize` instead. This way a Line/Column will always refer to a specific place in the grid and no confusion is created by having a count of lines as a possible index into the grid storage.
* Add Drop implementations for OpenGL structuresMikhail "L117" Nikolenko2021-02-19
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* Update dependenciesChristian Duerr2021-02-13
| | | | | | This introduces some duplicate dependencies, though they are necessary to build properly without any warnings. Fixes #4735.
* Move renderable cell transformation to alacrittyChristian Duerr2021-01-24
| | | | | | | | | | | | This refactors a large chunk of the alacritty_terminal API to expose all data necessary for rendering uniformly through the `renderable_content` call. This also no longer transforms the cells for rendering by a GUI but instead just reports the content from a terminal emulation perspective. The transformation into renderable cells is now done inside the alacritty crate. Since the terminal itself only ever needs to know about modified color RGB values, the configuration for colors was moved to the alacritty UI code.
* Add vi/search line indicatorChristian Duerr2021-01-01
| | | | | | | | | This adds a new visual indicator which shows the position in history of either the display offset during search, or the vi mode cursor. To make it as unintrusive as possible, the overlay is hidden whenever the vi mode cursor collides with its position. Fixes #3984.
* Fix missing glyphs crash on WindowsChristian Duerr2020-12-29
| | | Fixes #4617.
* Draw cursor with rect rendererKirill Chibisov2020-12-28
| | | | | | | | This commit makes cursors being drawn via rects, thus it's always above underlines/strikeouts. Also, since the cursor isn't a glyph anymore, it can't be obscured due to atlas switching while glyphs are rendered. Fixes #4404. Fixes #3471.
* Hide "missing" glyp for zerowidth characterKirill Chibisov2020-12-23
| | | | | | | | | | | This patch prevents missing zerowidth glyphs from obscuring the rendered glyph of a cell. The missing glyph itself is also consistently loaded and displayed on all platforms. It is initialized once together with the ascii symbols and then written to the atlas only once for every cached missing glyph. Co-authored-by: Christian Duerr <contact@christianduerr.com>
* Replace serde's derive with custom proc macroChristian Duerr2020-12-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This replaces the existing `Deserialize` derive from serde with a `ConfigDeserialize` derive. The goal of this new proc macro is to allow a more error-friendly deserialization for the Alacritty configuration file without having to manage a lot of boilerplate code inside the configuration modules. The first part of the derive macro is for struct deserialization. This takes structs which have `Default` implemented and will only replace fields which can be successfully deserialized. Otherwise the `log` crate is used for printing errors. Since this deserialization takes the default value from the struct instead of the value, it removes the necessity for creating new types just to implement `Default` on them for deserialization. Additionally, the struct deserialization also checks for `Option` values and makes sure that explicitly specifying `none` as text literal is allowed for all options. The other part of the derive macro is responsible for deserializing enums. While only enums with Unit variants are supported, it will automatically implement a deserializer for these enums which accepts any form of capitalization. Since this custom derive prevents us from using serde's attributes on fields, some of the attributes have been reimplemented for `ConfigDeserialize`. These include `#[config(flatten)]`, `#[config(skip)]` and `#[config(alias = "alias)]`. The flatten attribute is currently limited to at most one per struct. Additionally the `#[config(deprecated = "optional message")]` attribute allows easily defining uniform deprecation messages for fields on structs.
* Remove live-shader-reload featureKirill Chibisov2020-12-10
| | | | | Since live-shader-reload is generally unused and unmaintained, and could only be used for debugging purposes, since it refers relative paths, this feature was removed for the sake of simplicity.
* Render underline and strikeout rects in batchesIvan Avdeev2020-12-10
| | | | | | | | | | | | | | | Currently Alacritty requires a separate `draw` call to OpenGL whenever a new rectangle is rendered to the screen. With many rectangles visible, this has a significant impact on rendering performance. Instead of using separate draw calls, the new `RectRenderer` will build a batch of rectangles for rendering. This makes sure that multiple rectangles can be grouped together for single draw calls allowing a reduced impact on rendering time. Since this change is OpenGL 2 friendly, it should not make it more complicated to transition away from the 3.3+ requirements like an alternative instancing based implementation might have.
* Add blinking cursor supportDettorer2020-11-23
| | | | | | | | This adds support for blinking the terminal cursor. This can be controlled either using the configuration file, or using escape sequences. The supported control sequences for changing the blinking state are `CSI Ps SP q` and private mode 12.
* Fix wide characters being cut offKirill Chibisov2020-11-17
| | | Fixes #791.
* Add ability to select text during searchChristian Duerr2020-11-13
| | | | | | | | | | | | | This removes the restriction of not being able to select text while the search is active, making it a bit less jarring of a UX when the user tries to interact with the terminal during search. Since the selection was used during vi-less search to highlight the focused match, there is now an option for a focused match color, which uses the inverted normal match color by default. This focused match is used for both search modes. Other mouse interactions are now also possible during search, like opening URLs or clicking inside of mouse mode applications.
* Use dynamic storage for zerowidth charactersChristian Duerr2020-11-05
| | | | | | | | | | | | | | | | | | | The zerowidth characters were conventionally stored in a [char; 5]. This creates problems both by limiting the maximum number of zerowidth characters and by increasing the cell size beyond what is necessary even when no zerowidth characters are used. Instead of storing zerowidth characters as a slice, a new CellExtra struct is introduced which can store arbitrary optional cell data that is rarely required. Since this is stored behind an optional pointer (Option<Box<CellExtra>>), the initialization and dropping in the case of no extra data are extremely cheap and the size penalty to cells without this extra data is limited to 8 instead of 20 bytes. The most noticible difference with this PR should be a reduction in memory size of up to at least 30% (1.06G -> 733M, 100k scrollback, 72 lines, 280 columns). Since the zerowidth characters are now stored dynamically, the limit of 5 per cell is also no longer present.
* Remove unneeded collect during line rect creationMark Lodato2020-10-22
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* Add support for single line terminalsii412020-09-27
| | | | | | | | | | | | | | | | | This changes the minimum terminal dimensions from 2 lines and 2 columns, to 1 line and 2 columns. This also reworks the `SizeInfo` to store the number of columns and lines and consistently has only the terminal lines/columns stored, instead of including the message bar and search in some places of the Alacritty renderer/input. These new changes also make it easy to properly start the selection scrolling as soon as the mouse is over the message bar, instead of waiting until it is beyond it. Fixes #4207. Co-authored-by: Christian Duerr <contact@christianduerr.com>
* Log new padding and cell size on 'SizeInfo' updateKirill Chibisov2020-09-24
| | | | This makes our logging of 'SizeInfo' changes more consistent with the one we're using when creating a new 'Display'.
* Fix multiline URL highlightingChristian Duerr2020-08-30
| | | | Fixes #4182.
* Add support for double underlinesChristian Duerr2020-08-12
| | | | | | | | | | | | | This adds support for double underlines using the colon separated escape sequence `CSI 4 : 2 m`. Alacritty will now also always fallback to the normal underline in case any of the other underlines like the undercurl are specified. The escape sequence `CSI 4 : 0 m` can now be used to clear all underlines. Some terminals support `CSI 21 m` for double underline, but since Alacritty already uses that as cancel bold which is a little more consistent, that behavior has not changed. So the colon separated variant must be used.
* Reduce InstanceData footprintJoe Wilm2020-08-05
| | | | | | | | | | | | | | | | | | | | | | | | The InstanceData type in the rendering subsystem was previously 17 f32s plus one u8 which occupied a total of 72 bytes per instance. This meant that for every character or background cell drawn, 72 bytes were sent to the GPU. In the case of a 400x100 cell grid, a total of 2.9MB would be sent. This patch reduces InstanceData's size to 36 bytes, a 50% improvement! Using the above example for comparison, a worst case of 1.44MB would be transferred. The motivation for this patch comes from macOS. Once the terminal grid would reach a certain size, performance experienced a sharp and dramatic drop (render times would go from ~3ms to ~16ms). I don't want to speculate too much on the underlying issue, but suffice it to say that this patch alleviates the problem in my testing. While the performance impact was most significant on macOS, with rendering times cut by more than 50% in some cases, this also results in a measurable performance difference on other systems with high density grids. Co-authored-by: Christian Duerr <contact@christianduerr.com>
* Fix crates.io publishing restrictionsChristian Duerr2020-08-01
| | | | This works around the problem that crates pushed to crates.io cannot reference files outside of their crate directory.
* Rename font crate to crossfontChristian Duerr2020-07-18
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* Remove gui dependencies from alacritty_terminalKirill Chibisov2020-07-11
| | | | | | | | This commit removes font dependency from alacritty_terminal, so it'll simplify the usage of alacritty_terminal as a library, since you won't link to system's libraries anymore. It also moves many alacritty related config options from it. Fixes #3393.
* Remove alacritty.yml mentions from font crate errorsKirill Chibisov2020-07-11
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* Fix crash when configured font is missingChristian Duerr2020-07-11
| | | Fixes #3942.
* Add option to run command on bell Kirill Chibisov2020-07-10
| | | Fixes #1528.
* Add regex scrollback buffer searchChristian Duerr2020-07-09
| | | | | | | | | | This adds a new regex search which allows searching the entire scrollback and jumping between matches using the vi mode. All visible matches should be highlighted unless their lines are excessively long. This should help with performance since highlighting is done during render time. Fixes #1017.
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