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path: root/alacritty_terminal/src/term/mod.rs
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* 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.
* 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.
* Fix dimming of indexed colorsChristian Duerr2020-12-05
| | | | | | | | | | It seems like the list of colors might have changed a bit, leading to indexed colors not being transformed into their dim colors correctly. To prevent this from happening in the future, the dimming for colors in the range '0..=7' is now performed by offsetting them from the 'NamedColor::DimBlack'. Since this is the first dimmed color, this should always work as long as all dimmed colors are added in the correct order.
* Draw selection below Vi cursor when it's hiddenKirill Chibisov2020-11-28
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* Fix DoS caused by excessive CSI parameter valuesChristian Duerr2020-11-26
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* 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 vi mode terminal resetChristian Duerr2020-11-19
| | | | | | | Since the vi mode is unrelated to the terminal emulation itself, it should not be reset during a `reset` to prevent unnecessary confusion. This also prevents the search from switching from vi mode to vi-less search without any indication to the user.
* Fix wide characters being cut offKirill Chibisov2020-11-17
| | | Fixes #791.
* Fix zerowidth characters in the last columnKirill Chibisov2020-11-15
| | | | | | | | | This commit fixes the issue that when attempting to write zerowidth characters into the last column, it is written in the second to last column instead. Fixes #4227. Co-authored-by: Christian Duerr <contact@christianduerr.com>
* 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.
* Fix use after free when dropping zerowidth dataKirill Chibisov2020-11-13
| | | | | | | | | | | | Commit ec42b42ce601808070462111c0c28edb0e89babb added an optional pointer for each cell, thus some old code that was optimizing copying with 'ptr::copy' was duplicating "unique" pointers ('Box'), which was resulting in use after free, after attempting to free both of these pointers. By replacing these unsafe blocks with safe Rust, the issue itself is fixed and the potential for future memory problems is eliminated from this area of the code.
* 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.
* Add support for urgency hints CSITaylor Blau2020-10-10
| | | | | | | | | | | | | | | | | | | | | | | Teach Alacritty to stop setting the window as urgent upon a bell by emulating xterm's 'bellIsUrgent' resource and relevant CSI. When this resource is enabled (with 'CSI ? 1042 h'), a bell event causes the window to be marked as urgent. When the resource is disabled (with 'CSI ? 1042 l'), the window is not marked urgent in the event of a bell. There are two wrinkles worth noting here: - The 'TermMode::URGENCY_HINTS' does _not_ affect the terminal's configured bell command, since we only want to control whether or not the window is marked as urgent, not anything else. - In xterm, the 'bellIsUrgent' resource is _disabled_ by default. Since bouncing the dock icon has been the default in Alacritty on macOS thus far, do not make an effort to change that in this patch. This allows users to emit "\e[?1042l" and disable bouncing the dock icon. Fixes #2950.
* 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>
* Fix selection incorrectly expanding when scrolled in historyKirill Chibisov2020-09-26
| | | | | | | | | When doing selection expansion we were checking for wide char flags on a cells from the bottom of the terminal instead of in a current viewport when scrolled up in history, which was leading to expanding more than needed if we had wide chars on the same viewport cell, but in the bottom of the terminal. Fixes #4257.
* Pass existing CLI parameters to SpawnNewInstanceRohan Poojary2020-09-06
| | | Co-authored-by: Christian Duerr <contact@christianduerr.com>
* Add escape to report text area sizeAyose Cazorla2020-08-28
| | | | This implements the escapes `CSI 14 t` and `CSI 18 t` which report the text area size in pixels and characters.
* Unify term dimension callsChristian Duerr2020-08-25
| | | | | | | Since the `Term` implements the `Dimensions` trait itself, we shouldn't call `term.grid()` to call methods from the `Dimensions` trait. This removes all instances of this that I could find in the code at the moment.
* 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.
* Bump minimum supported Rust version to 1.43.0Kirill Chibisov2020-07-28
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* Fix CellForeground and CellBackground cursor colorsKirill Chibisov2020-07-27
| | | | | This commit fixes regression introduced in bedf5f3004e8f33011925ca471be02ead96f4581, when setting certain CellForeground/CellBackground combinations stoppped working.
* Invert fixed color cursor if it's close to cell bgChristian Duerr2020-07-26
| | | | | | | | | | | | | This should reduce the number of times people with fixed cursor colors run into troubles when existing text is already colored. Using just the background color as a metric instead of both background and foreground color should ensure that the cursor still has a clear shape, since just changing the foreground color for a cursor might be difficult to see. Always inverting the entire cursor instead of keeping the fixed foreground color is important to make sure the contrast isn't messed up. Fixes #4016.
* Add secondary DA supportChristian Duerr2020-07-23
| | | | | | | | | | | This adds support for the secondary DA escape sequence response. Alacritty's version is formatted allowing for up to 99 minor and patch versions, which should be sufficient. The tertiary DA is intentionally not implemented and marked as rejected in the documentation, since a lot of terminals do not support it, or report useless data (XTerm/URxvt/Kitty). Fixes #3100.
* Add support for searching without vi modeChristian Duerr2020-07-15
| | | | | | | | This implements search without vi mode by using the selection to track the active search match and advancing it on user input. The keys to go to the next or previous match are not configurable and are bound to enter and shift enter based on Firefox's behavior. Fixes #3937.
* 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.
* 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.
* Fix saved cursor handlingChristian Duerr2020-07-06
| | | | | | | | | | | This resolves several problems with handling of the saved cursor when switching between primary and alternate screen. Additionally ref-tests are also added for all common interactions to make sure the behavior does not regress. The behavior is based on XTerm's behavior except for interaction with `reset`. XTerm does not reset the alternate screen's saved cursor on `reset`, but VTE does. Since a `reset` should reset as much as possible, Alacritty copies VTE here instead of XTerm.
* Preserve linewrap flag across alt screen switchesChristian Duerr2020-07-06
| | | | | | While neither VTE, URxvt nor Kitty handle this, preserving the linewrap flag across alternate screen switches seems like the correct thing to do. XTerm also does handle this correctly, which indicates that it is a bug and not a feature.
* Fix reflow of empty wrapped cursor lineChristian Duerr2020-07-01
| | | | | | | | | | | This bug was caused by trying to grow the terminal while the cursor line was wrapped but entirely empty. Resizing the terminal now accounts for the position of the deleted line and moves the cursor up only when the line deleted was above it. The deletion of the line was caused by the shell redrawing itself whenever the cursor is moved. Fixes #3583.
* Fix foreground dimming with truecolor textCarlo Abelli2020-06-29
| | | Fixes #3766.
* Rename alt_grid to inactive_gridChristian Duerr2020-06-28
| | | | | | Since the alt_grid is not always the alternate screen buffer, the name inactive_grid should fit much better. Fixes #3504.
* Clear selection on clear line/screen escapesKirill Chibisov2020-06-26
| | | | | Selection is now cleared if clear line or clear screen escape sequences are clearing content behind it.
* Add automatic scrolling during selectionChristian Duerr2020-06-18
| | | | | | | | | | | | | This adds a new `Scheduler` which allows for staging events to be processed at a later time. If there is a selection active and the mouse is above or below the window, the viewport will now scroll torwards the direction of the mouse. The amount of lines scrolled depends on the distance of the mouse to the boundaries used for selection scrolling. To make it possible to scroll while in fullscreen, the selection scrolling area includes the padding of the window and is at least 5 pixels high in case there is not enough padding present.
* Remove copypasta dependency from alacritty_terminalKirill Chibisov2020-06-07
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* Remove copyright notice from filesChristian Duerr2020-06-06
| | | | | | | | | | | | | | 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.
* Refactor Term/Grid separationChristian Duerr2020-05-30
| | | | | | | | | | | This commit aims to clear up the separation between Term and Grid to make way for implementing search. The `cursor` and `cursor_save` have been moved to the grid, since they're always bound to their specific grid and this makes updating easier. Since the selection is independent of the active grid, it has been moved to the `Term`.
* Fix crash when writing wide char in last columnChristian Duerr2020-05-17
| | | | | | | | This resolves an issue where trying to write a fullwidth character in the last column would crash Alacritty, if linewrapping was disabled. Instead of assuming that the linewrap put after the linewrapping spacer was successful, the character writing is now skipped completely when trying to put a wide character in the last column.
* Extend style guideline documentationChristian Duerr2020-05-05
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* Fix clippy warningsMatthias Krüger2020-05-01
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* Clear selection on grid swapRémi Garde2020-04-20
| | | Fixes #3290.
* Fix tabstops not being reset with 'reset'Kirill Chibisov2020-03-30
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* Remove `fs::read_to_string` reimplementationsChristian Duerr2020-03-26
| | | | | | After two previous PRs already removed some instances of reimplementations of the `fs::read_to_string` functionality, this removes the last remaining occurence and with it all instances of `File::open`. So this should remove them all for good.
* Fix cursor position after alt screen resizeChristian Duerr2020-03-24
| | | | | | | | | | | | | | | | | This fixes a regression introduced in 4cc6421, which ignored the main grid's cursor when increasing the number of lines available, causing incorrect cursor position after restoring to the primary screen. Additionally another similar bug has been fixed where the grid was not scrolled correctly when shrinking while in the alternate screen. When the grid is resized multiple lines at once, there was also an issue with Alacritty either pulling all lines from history or none at all, instead of mixing both approaches and pulling just what is required. This lead to incorrect cursor positions when the resize could partially make use of history. Fixes #3499.
* Fix invisible selectionChristian Duerr2020-03-21
| | | | This resolves a bug where the very first/last cell would still be selected when both the start and the end were below/above the viewport.
* Add modal keyboard motion modeChristian Duerr2020-03-18
| | | | | | | | | | | | | | | | | | | This implements a basic mode for navigating inside of Alacritty's history with keyboard bindings. They're bound by default to vi's motion shortcuts but are fully customizable. Since this relies on key bindings only single key bindings are currently supported (so no `ge`, or repetition). Other than navigating the history and moving the viewport, this mode should enable making use of all available selection modes to copy content to the clipboard and launch URLs below the cursor. This also changes the rendering of the block cursor at the side of selections, since previously it could be inverted to be completely invisible. Since that would have caused some troubles with this keyboard selection mode, the block cursor now is no longer inverted when it is at the edges of a selection. Fixes #262.
* Fix live config reload for window titleChristian Duerr2020-03-14
| | | | | | | | | | | | | This enables live config reload for the window title. This includes updating the title after it has been pushed and popped from the title stack. The dynamic title option also isn't disabled automatically anymore when the title is set in the config. If the title is set from CLI, the behavior is unchanged and dynamic title changes are still disabled. If the dynamic title is disabled in the config, the title is still updated when the config title is changed. Dynamic title now only prevents changes to the UI's title.
* Fix selection with invisible start and endChristian Duerr2020-03-07
| | | | | This resolves an issue with the selection clamping, where no selection would be rendered at all when the start was above the viewport while the end was below it.
* Remove `tabspaces` config optionChristian Duerr2020-03-01
| | | | | | | This completely removes the tabspaces option from the Alacritty configuration, due to frequent misuse of it. Based on some research, none of the terminal emulators support setting the value for tabspaces or read the terminfo to determine init_tabs value at startup. The tested terminal emulators were URxvt, XTerm, and Termite.
* Fix tabs across linewrapChristian Duerr2020-03-01
| | | | | | | | | | | | This resolves an issue with tabs not breaking across line boundaries, instead the characters would just all get written to the last column and thus be lost. It also tweaks the behavior of what happens when the terminal resizes with the default tabspaces changed, using something like the `tabs` program. Previously all tabstops would be reset to the default on resize, which is what URxvt does. Now the tabspaces are kept and the new columns are filled with the default tabstops, which emulates Termite.