## Summary of the Pull Request
1) Improves the performance of word-recognition operations such as word
navigation in UIA and selection.
2) Fixes a bug where attempting to find the next word in UIA, when none
exists, would hang
3) TraceLogging code only runs when somebody is listening
## Detailed Description of the Pull Request / Additional comments
- The concept of a delimiter class got moved to the CharRow.
- The buffer iterator used to save a lot more information than we needed
- I missed updating a tracing function after making GetSelection return
one text range. That is fixed now.
## Validation Steps Performed
Performed Word Navigation under Narrator and NVDA.
NOTE: The release build should be used when testing to optimize
performance
Closes#4703
## Summary of the Pull Request
Korean IME was not working correctly due to way we were clearing the input buffer inside of `TSFInputControl`. We wanted to clear our input buffer and tell TSF to clear its input buffer as well when we receive a `CompositionCompleted` event. This works fine in some IME languages such as Chinese and Japanese. However, Korean IME composes characters differently in such a way where we can't tell TSF to clear their buffer during a `CompositionCompleted` event because it would clear the character that triggered the `CompositionCompleted` event in the first place.
The solution in this PR is to keep our `_inputBuffer` intact until the user presses <kbd>Enter</kbd> or <kbd>Esc</kbd>, in which case we clear our buffer and the TSF buffer. I've chosen these two keys because it seems to make sense to clear the buffer after text is sent to the terminal with <kbd>Enter</kbd>, and <kbd>Esc</kbd> usually means to cancel a current composition anyway.
This means we need to keep track of our last known "Composition Start Point", which is represented by `_activeTextStart`. Whenever we complete a composition, we'll send the portion of the input buffer between `_activeTextStart` and the end of the input buffer to the terminal. Then, we'll update `_activeTextStart` to be the end of the input buffer so that the next time we send text to the terminal, we'll only send the portion of our buffer that's "active".
## PR Checklist
* [x] Closes#4226
* [x] CLA signed
* [x] Tests added/passed
## Validation Steps Performed
Manual testing with Chinese, Japanese, and Korean IME.
* Azure: rewrite user input handler
This commit replaces the AzureConnection's input handler with one that
acts more like "getline()". Instead of the Read thread setting a state
and WriteInput filling in the right member variable, the reader blocks
on the user's input and receives it in an optional<string>.
This moves the input number parsing and error case handling closer to
the point where those inputs are used, as opposed to where they're
collected.
It also switches our input to be "line-based", which is a huge boon for
typing tenant numbers >9. This fixes#3233. A simple line editor
(supporting only backspace and CR) is included.
It also enables echo on user input, and prints it in a nice pretty green
color.
It also enables input queueing: if the user types anything before the
connection is established, it'll be sent once it is.
Fixes#3233.
* Azure: display the user's options and additional information in color
This commit colorizes parts of the AzCon's strings that include "user
options" -- things the user can type -- in yellow. This is to help with
accessibility.
The implementation here is based on a discussion with the team.
Alternative options for coloration were investigated, such as:
* Embedding escape sequences in the resource file.
This would have been confusing for translators.
The RESW file format doesn't support  escapes, so we would need
some magic post-processing.
* Embedding "markup" in the resource file (like #{93m}, ...)
This still would have been annoying for translators.
We settled on an implementation that takes resource names, colorizes
them, and string-formats them into other resources.
* Azure: follow the user's shell choice from the online portal
Fixes#2266.
* Azure: remove all credentials instead of just the first one
- don't decrement backIter ahead of the string begin
- ensure partial multibyte characters are still captured correctly if
the state class gets them byte by byte
- while we're here, switch to chromium math
Closes#4791Closes#4290
## Summary of the Pull Request
Adjusts column padding code in `CustomTextLayout` to only pad out for surrogate pairs, not anything that reports two columns.
## References
- See also #4747
## PR Checklist
* [x] Closes#4780
* [x] I work here.
* [x] Manual tests.
* [x] No doc, this fixes code to match comment. Oops.
* [x] Am core contributor. Also discussed with @leonMSFT.
## Detailed Description of the Pull Request / Additional comments
For surrogate pairs like high Unicode emoji, we receive two wchar_ts but only one column count (which is usually 2 because emoji are usually inscribed in the full-width squares.) To compensate for this, I added in a little padding function at the top of the `CustomTextLayout` construction that adds a column of 0 aligned with the second half of a surrogate pair so the text-to-glyph mapping lines up correctly.
Unfortunately, I made a mistake while either responding to PR feedback in #4747 or in the first place and I made it pad out extra 0 columns based on the FIRST column count, not based on whether or not there is a trailing surrogate pair. The correct thing to do is to pad it out based on the LENGTH of text associated with the given column count. This means that full width characters which can be represented in one wchar_t, like those coming from the IME in most cases (U+5C41 for example) will have a column count of 2. This is perfectly correct for mapping text-to-glyphs and doesn't need a 0 added after it. A house emoji (U+1F3E0) comes in as two wchar_ts (0xD83C 0xDFE0) with the column count of 2. To ensure that the arrays are aligned, the 2 matches up with the 0xD83C but the 0xDFE0 needs a 0 on it so it will be skipped over. (Don't worry, because it's a surrogate, it's naturally consumed correctly by the glyph mapper.)
The effect was that every OTHER character inserted by the IME was scaled to 0 size (as an advance of 0 was expected for 0 columns).
The fix restores it so those characters don't have an associated count and aren't scaled.
## Validation Steps Performed
- Opened it up
- Put in the house emoji like #4747 (U+1f3e0)
- Put in some characters with simplified Chinese IME (fixed now)
- Put in the utf83.txt sample text used in #4747
## Summary of the Pull Request
Match conhost behavior and clear selection on viewport/font resize.
## PR Checklist
* [X] Closes#1165
## Validation Steps Performed
Retried attached bug repro steps
## Summary of the Pull Request
- Improves the correction of the scaling and spacing that is applied to
glyphs if they are too large or too small for the number of columns that
the text buffer is expecting
## References
- Supersedes #4438
Co-authored-by: Mili (Yi) Zhang <milizhang@gmail.com>
- Related to #4704 (#4731)
## PR Checklist
* [x] Closes#696
* [x] Closes#4375
* [x] Closes#4708
* [x] Closes a crash that @DHowett-MSFT complained about with
`"x" * ($Host.UI.RawUI.BufferSize.Width - 1) + "`u{241b}"`
* [x] Eliminates an exception getting thrown with the U+1F3E0 emoji in
`_CorrectGlyphRun`
* [x] Corrects several graphical issues that occurred after #4731 was
merged to master (weird repeats and splits of runs)
* [x] I work here.
* [x] Tested manually versus given scenarios.
* [x] Documentation written into comments in the code.
* [x] I'm a core contributor.
## Detailed Description of the Pull Request / Additional comments
- The `_CorrectGlyphRun` function now walks through and uses the
`_glyphClusters` map to determine the text span and glyph span for each
cluster so it can be considered as a single unit for scaling.
- The total number of columns expected across the entire cluster
text/glyph unit is considered for the available spacing for drawing
- The total glyph advances are summed to see how much space they will
take
- If more space than necessary to draw, all glyphs in the cluster are
offset into the center and the extra space is padded onto the advance of
the last glyph in the range.
- If less space than necessary to draw, the entire cluster is marked for
shrinking as a single unit by providing the initial text index and
length (that is back-mapped out of the glyph run) up to the parent
function so it can use the `_SetCurrentRun` and `_SplitCurrentRun`
existing functions (which operate on text) to split the run into pieces
and only scale the one glyph cluster, not things next to it as well.
- The scale factor chosen for shrinking is now based on the proportion
of the advances instead of going through some font math wizardry
- The parent that calls the run splitting functions now checks to not
attempt to split off text after the cluster if it's already at the end.
This was @DHowett-MSFT's crash.
- The split run function has been corrected to fix the `glyphStart`
position of the back half (it failed to `+=` instead of `=` which
resulted in duplicated text, sometimes).
- Surrogate pair emoji were not allocating an appropriate number of
`_textClusterColumns`. The constructor has been updated such that the
trailing half of surrogate pairs gets a 0 column width (as the lead is
marked appropriately by the `GetColumns()` function). This was the
exception thrown.
- The `_glyphScaleCorrections` array stored up over the calls to
`_CorrectGlyphRun` now uses a struct `ScaleCorrection` as we're up to 3
values.
- The `ScaleCorrection` values are named to clearly indicate they're in
relation to the original text span, not the glyph spans.
- The values that are used to construct `ScaleCorrection`s within
`_CorrectGlyphRun` have been double checked and corrected to not
accidentally use glyph index/counts when text index/counts are what's
required.
## Validation Steps Performed
- Tested the utf82.txt file from one of the linked bugs. Looked
specifically at Burmese through Thai to ensure restoration (for the most
part) of the behavior
- Ensured that U+1f3e0 emoji (🏠) continues to draw correctly
- Checked Fixedsys Excelsior font to ensure it's not shrinking the line
with its ligatures
- Checked ligatureness of Cascadia Code font
- Checked combining characters U+0300-U+0304 with a capital A
PR #4548 inadvertantly broke mouse button input in the WPF control. This happened due to the extra layer of HWND indirection. The fix is to move the mouse button handling down into the native control where the window messages are now being sent.
- When performing chunk selection, the expansion now occurs at the time
of the selection, not the rendering of the selection
- `GetSelectionRects()` was moved to the `TextBuffer` and is now shared
between ConHost and Windows Terminal
- Some of the selection variables were renamed for clarity
- Selection COORDs are now in the Text Buffer coordinate space
- Fixes an issue with Shift+Click after performing a Multi-Click
Selection
## References
This also contributes to...
- #4509: UIA Box Selection
- #2447: UIA Signaling for Selection
- #1354: UIA support for Wide Glyphs
Now that the expansion occurs at before render-time, the selection
anchors are an accurate representation of what is selected. We just need
to move `GetText` to the `TextBuffer`. Then we can have those three
issues just rely on code from the text buffer. This also means ConHost
gets some of this stuff for free 😀
### TextBuffer
- `GetTextRects` is the abstracted form of `GetSelectionRects`
- `_ExpandTextRow` is still needed to handle wide glyphs properly
### Terminal
- Rename...
- `_boxSelection` --> `_blockSelection` for consistency with ConHost
- `_selectionAnchor` --> `_selectionStart` for consistency with UIA
- `_endSelectionPosition` --> `_selectionEnd` for consistency with
UIA
- Selection anchors are in Text Buffer coordinates now
- Really rely on `SetSelectionEnd` to accomplish appropriate chunk
selection and shift+click actions
## Validation Steps Performed
- Shift+Click
- Multi-Click --> Shift+Click
- Chunk Selection at...
- top of buffer
- bottom of buffer
- random region in scrollback
Closes#4465Closes#4547
Defines the following automation properties for a Terminal Control:
- [**Orientation**](https://docs.microsoft.com/en-us/uwp/api/windows.ui.xaml.automation.peers.automationpeer.getorientationcore):
- The orientation of the control
- None --> Vertical
- [**Name**](https://docs.microsoft.com/en-us/uwp/api/windows.ui.xaml.automation.peers.automationpeer.getnamecore):
- The name as used by assistive technology and other Microsoft UI
Automation clients. Generally presented by automation clients as the
primary way to identify an element (along with the control type)
- "" --> <profile name>
- [**HelpText**](https://docs.microsoft.com/en-us/uwp/api/windows.ui.xaml.automation.peers.automationpeer.gethelptextcore):
- The help text. Generally presented by automation clients if
requested by the user. This would be something that you would normally
expect to appear from tooltips.
- "" --> <tab title>
- [**LiveSetting**](https://docs.microsoft.com/en-us/uwp/api/windows.ui.xaml.automation.peers.automationpeer.getlivesettingcore):
- reports the live setting notification behavior. A representation of
how assertive this control should be when content changes.
- none --> Polite
## Detailed Description of the Pull Request / Additional comments
ProfileName had to be added to the TerminalSettings (IControlSettings)
to pass that information along to the automation peer. In the rare event
that somebody purposefully decided to make their ProfileName empty, we
fallback to the tab title.
## Validation Steps Performed
Verified using Accessibility Insights and inspect.exe
This is are some examples of the information a general user can expect
to receive about a Terminal Control.
- Type: Terminal Control
- Name: Command Prompt
- Help Text (if requested): Command Prompt - ping bing.com
- Type: Terminal Control
- Name: Ubuntu
- Help Text (if requested): cazamor@PC-cazamor:/mnt/c/Users/cazamor$
Note, it is generally read by an automation client as follows:
"<type>, <name>"
References #2099 - Automation Properties for TerminalControl, Search Box
References #2142 - Localization
Closes#2142
## Summary of the Pull Request
`keys` in `keybindings` now accepts a string value. This assumes that you wanted a keychord of size 1. The schema and user docs were properly updated too.
This means that the following keybinding is now accepted in your profiles.json:
```json
{ "command": "copy", "keys": "ctrl+c" }
```
as opposed to...
```json
{ "command": "copy", "keys": [ "ctrl+c" ] }
```
## PR Checklist
* [X] Closes#4713
* [X] CLA signed.
* [X] Tests added/passed
* [X] Requires documentation to be updated
## Validation Steps Performed
- [X] tested the new schema
- [X] added test
## Summary of the Pull Request
Fix a bug where the `Renderer::PaintFrame` method:
1. is not called until the next `RenderThread::NotifyThread` call but needs to be called because there the terminal was updated (theoretical bug)
2. is called twice but needs to be called only once (verified bug)
## References
The bug was introduced by #3511.
## PR Checklist
* [x] CLA signed. If not, go over [here](https://cla.opensource.microsoft.com/microsoft/Terminal) and sign the CLA
## Detailed Description of the Pull Request / Additional comments
### Before
#### First bug
In the original code, `_fNextFrameRequested` is set to `true` in render thread because `std::atomic_flag::test_and_set` is called.
This is wrong because it means that the render thread will render the terminal again even if there is no change after the last render.
I think the the goal was to load the boolean value for `_fNextFrameRequested` to check whether the thread should sleep or not.
The problem is that there is no method on `std::atomic_flag` to load its boolean value. I guess what happened was that the "solution" that was found was to use `std::atomic_flag::test_and_set`, followed by `std::atomic_flag::clear` if the value was `false` originally (if `std::atomic_flag::test_and_set` returned `false`) to restore the original value. I guess that this was believed to be equivalent to just a simple load, without doing any change to the value because it restores it at the end.
But it's not: this is dangerous because if the value is changed to `true` between the call to `std::atomic_flag::test_and_set` and the call to `std::atomic_flag::clear`, then the value ends up being `false` at the end which is wrong because we don't want to change it! And if that value ends up being `false`, it means that we miss a render because we will wait on `_hEvent` during the next iteration on the render thread.
Well actually, here, this not even a problem because when that code is ran, `_fPainting` is `false` which means that the other thread that modifies the `_fNextFrameRequested` value through `RenderThread::NotifyPaint` will not actually modify `_fNextFrameRequested` but rather call `SetEvent` (see the method's body).
But wait! There is a problem there too! `std::atomic_flag::test_and_set` is called for `_fPainting` which sets its value to `true`. It was probably unintended. So actually, the next call to `RenderThread::NotifyPaint` _will_ end up modifying `_fNextFrameRequested` which means that the data race I was talking about _might_ happen!
#### Second bug
Let's go back a little bit in my explanation. I was talking about the fact that:
> I guess what happened was that the "solution" that was found was to use `std::atomic_flag::test_and_set`, followed by `std::atomic_flag::clear` if the value was `false` originally (if `std::atomic_flag::test_and_set` returned `false`) to restore the original value.
The problem is that the reverse was done in the implementation: `std::atomic_flag::clear` is called if the value was _`true`_ originally!
So at this point, if the value of `_fNextFrameRequested` was `false`, then `std::atomic_flag::test_and_set` sets its is set to `true` and returns `false`. So for the next iteration, `_fNextFrameRequested` is `true` and the render thread will re-render but that was not needed.
### After
I used `std::atomic<bool>` instead of `std::atomic_flag` for `_fNextFrameRequested` and the other atomic field because it has a `load` and a `store` method so we can actually load the value without changing it.
I also replaced `_fPainting` by `_fWaiting`, which is basically the opposite of `_fPainting` but stays `true` for a little shorter than `_fPainting` would stay `false`. Indeed, I think that it makes more sense to directly wrap/scope _just_ the call to `WaitForSingleObject` by setting my atomic variable to `true` _just_ before and to `false` _just_ after because:
* It makes more sense while you're reading the code: it's easier IMO to understand what the purpose of `_fWaiting` is (that is, to call `SetEvent` from `RenderThread::NotifyPaint` if it's `true`).
* It's probably a tiny bit better for performance because it will become `true` for a little shorter which means less calls to `SetEvent`.
#### Warning
I don't really understand [std::memory_order](https://en.cppreference.com/w/cpp/atomic/memory_order)s.
So I used the default one (`std::memory_order_seq_cst`) which is the safest.
I believe that if no read or write are reordered in the two threads (`RenderThread::NotifyPaint` and `RenderThread::_ThreadProc`), then the code I wrote will behave correctly.
I think that `std::memory_order_seq_cst` enforces that so it should be fine, but I'm not sure.
## Validation Steps Performed
**I tried to reproduce the second bug that I described in the first section of this PR.**
I put a breakpoint on `RenderThread::NotifyPaint` and on `Renderer::PaintFrame`. Initially they are disabled. Then I ran the terminal in Release mode, waited a bit for the prompt to display and the cursor to start blinking. Then I enabled the breakpoints.
### Before
Each `RenderThread::NotifyPaint` is followed by 2 `Renderer::PaintFrame` calls. ❌
### After
Each `RenderThread::NotifyPaint` is followed by 1 `Renderer::PaintFrame` call. ✔️
## Summary of the Pull Request
Changes how conpty emits text to preserve line-wrap state, and additionally adds rudimentary support to the Windows Terminal for wrapped lines.
## References
* Does _not_ fix (!) #3088, but that might be lower down in conhost. This makes wt behave like conhost, so at least there's that
* Still needs a proper deferred EOL wrap implementation in #780, which is left as a todo
* #4200 is the mega bucket with all this work
* MSFT:16485846 was the first attempt at this task, which caused the regression MSFT:18123777 so we backed it out.
* #4403 - I made sure this worked with that PR before I even sent #4403
## PR Checklist
* [x] Closes#405
* [x] Closes#3367
* [x] I work here
* [x] Tests added/passed
* [n/a] Requires documentation to be updated
## Detailed Description of the Pull Request / Additional comments
I started with the following implementation:
When conpty is about to write the last column, note that we wrapped this line here. If the next character the vt renderer is told to paint get is supposed to be at the start of the following line, then we know that the previous line had wrapped, so we _won't_ emit the usual `\r\n` here, and we'll just continue emitting text.
However, this isn't _exactly_ right - if someone fills the row _exactly_ with text, the information that's available to the vt renderer isn't enough to know for sure if this line broke or not. It is possible for the client to write a full line of text, with a `\n` at the end, to manually break the line. So, I had to also add the `lineWrapped` param to the `IRenderEngine` interface, which is about half the files in this changelist.
## Validation Steps Performed
* Ran tests
* Checked how the Windows Terminal behaves with these changes
* Made sure that conhost/inception and gnome-terminal both act as you'd expect with wrapped lines from conpty
This commit removes all of the custom UI initialization code in
TermControl and replaces it with a xaml file. Some dead or reundant code
was removed as part of this refactoring.
It also fixes two (quasi-related) issues:
* The search box, on first launch, was offset by the scrollbar even if
the scrollbar was invisible.
* The scrollbar state wasn't hot-reloadable.
The new UIA code in PublicTerminalCore broke windows 7 support by referring
to API set dlls for UIA. This PR changes the link line to link to
UIAutomationcore.dll directly.
## Summary of the Pull Request
- Surrogate pairs are being split in half with the run splitting check.
## References
- Related to #4708 but not going to fix it.
## PR Checklist
* [x] Closes#4704
* [x] I work here.
* [x] I am a core contributor.
## Detailed Description of the Pull Request / Additional comments
- The adjustment of the run heights in the correction function reports back a text index and a scaling factor. However, I didn't remember at the time that the text is being stored as UTF-16. So the index given can be pointing to the high surrogate of a pair. Thus adding 1 to split "after" the text character, then backing up by 1 isn't valid in if the index given was for a high surrogate.
The quick fix is to advance by two if it's a high surrogate and one otherwise.
## Validation Steps Performed
- Used the sample code from #4704 to print the house emoji in various situations into the buffer.
## Summary of the Pull Request
Currently, when the user attempts to type using IME while the Search Box is focused, the input goes to the terminal instead. This is due to the fact that the `TSFInputControl` assumes it's in control whenever TermControl gets focus. So, it'll intercept IME input before the Search Box receives it. We simply need to modify `TermControl::GotFocus` to check if the SearchBox has focus. If it does, `TSFInputControl::NotifyFocusEnter` shouldn't be called.
As a small side fix, I've also disabled the terminal cursor blinking when the Search Box has focus.
Thinking a little further, if we have more features in the future that behave like search box (i.e. advanced tab switcher, or any other XAML controls that pop up) and require text input, we might need to create a sort of "AnyOtherTextControlInFocus" function to see if TSFInputControl should receive focus or not.
## PR Checklist
* [x] Closes#4434
* [x] CLA signed. If not, go over [here](https://cla.opensource.microsoft.com/microsoft/Terminal) and sign the CLA
* [x] Tests added/passed
## Validation Steps Performed
Search works as expected with IME. Composition picker appears underneath Search Box when typing IME in the Search Box. Clicking outside of the Search Box still returns control to TSFInputControl/TermControl.
Terminal Cursor blinks when it has focus, and doesn't when the Search Box has focus.
## Summary of the Pull Request
Currently, while in IME mode, selections with the Emoji/Kaomoji/Symbol Picker (which is brought up with <kbd>win+.</kbd>) are not displayed until the user starts a new composition. This is due to the fact that we hide the TextBlock when we receive a CompositionCompleted event, and we only show the TextBlock when we receive a CompositionStarted event. Input from the picker does not count as a composition, so we were never showing the text box, even if the symbols were thrown into the inputBuffer. In addition, we weren't receiving CompositionStarted events when we expected to.
We should be showing the TextBlock when we receive _any_ text, so we should make the TextBlock visible inside of `TextUpdatingHandler`. Furthermore, some really helpful discussion in #3745 around wrapping the `NotifyTextChanged` call with a `NotifyFocusLeave` and a `NotifyFocusEnter` allowed the control to much more consistently determine when a CompositionStarted and a CompositionEnded.
I've also went around and replaced casts with saturating casts, and have removed the line that sets the `textBlock.Width()` so that it would automatically set its width. This resolves the issue where while composing a sentence, the textBlock would be too small to contain all the text, so it would be cut off, but the composition is still valid and still able to continue.
## PR Checklist
* [x] Closes#4148
* [x] CLA signed. If not, go over [here](https://cla.opensource.microsoft.com/microsoft/Terminal) and sign the CLA
* [x] Tests added/passed
## Validation Steps Performed
Tested picking emojis, kaomojis, and symbols with numerous different languages.
This commit introduces two fixes for C5205 (delete of an abtract class
without a virtual dtor) and one fix for a very hopeful VS version gating
that didn't pan out.
<!-- Enter a brief description/summary of your PR here. What does it fix/what does it change/how was it tested (even manually, if necessary)? -->
## Summary of the Pull Request
- Scale the retro terminal effects (#3468) scan lines with the screen's DPI.
- Remove artifacts from sampling wrap around.
Before & after, with my display scale set to 350%:
Before & after showing artifact removal, with my display scale set to 100%, and image enlarged to 400%:
<!-- Please review the items on the PR checklist before submitting-->
## PR Checklist
* [x] Closes#4362
* [x] CLA signed. If not, go over [here](https://cla.opensource.microsoft.com/microsoft/Terminal) and sign the CLA
* [ ] Tests added/passed
* [ ] Requires documentation to be updated
* [ ] I've discussed this with core contributors already. If not checked, I'm ready to accept this work might be rejected in favor of a different grand plan. Issue number where discussion took place: #xxx
<!-- Provide a more detailed description of the PR, other things fixed or any additional comments/features here -->
## Detailed Description of the Pull Request / Additional comments
Adds a constant buffer, which could be used for other settings for the retro terminal pixel shader.
I haven't touched C++ in over a decade before this change, and this is the first time I've played with DirectX, so please assume my code isn't exactly best practice. 🙂
<!-- Describe how you validated the behavior. Add automated tests wherever possible, but list manual validation steps taken as well -->
## Validation Steps Performed
- Changed display scale with experimental.retroTerminalEffect enabled, enjoyed scan lines on high resolution monitors.
- Enabled experimental.retroTerminalEffect, turned the setting off, changed display scale. Retro tabs still scale scan lines.
This PR hooks up the existing UIA implementation to the WPF control. Some existing code that was specific to the UWP terminal control could be shared so that has been refactored to a common location as well.
## Validation Steps Performed
WPF control was brought up in UISpy and the UIA tree was verified. NVDA was then used to check that screen readers were operating properly.
## Summary of the Pull Request
Fixes a flaw that happened if `til::u8u16` received a single lead byte.
## PR Checklist
* [x] Closes#4673
* [x] Tests added/passed
## Detailed Description of the Pull Request / Additional comments
The loop for caching partials didn't run and thus, the lead byte was
converted to U+FFFD. That's because the loop starts with `sequenceLen`
initialized with 1. And if the string has a length of 1 the initial
condition is `1<1` which is evaluated to `false` and the body of the
loop was never executed.
## Validation Steps Performed
1) updated the code of the state class and tested manually that `printf
"\xE2"; printf "\x98\xBA\n"` prints a U+263A character
2) updated the unit tests to make sure that still up to 3 partials are
cached
3) updated the unit tests to make sure caching also works if the string
consists of a lead byte only
4) tested manually that #4086 is still resolved
## Summary of the Pull Request
Adjusts `DrawGlyphRun` method inside DirectX renderer to restrict text
to be clipped within the boundaries of the row.
## PR Checklist
* [x] Closes#1703
* [x] I work here.
* [x] No tests.
* [x] No docs.
* [x] I am core contributor.
## Detailed Description of the Pull Request / Additional comments
For whatever reason, some of these shade glyphs near U+2591 tend to
extend way above the height of where we expect they should. This didn't
look like a problem in conhost because it clipped every draw inside the
bounds. This therefore applies the same clip logic as people don't
really expect text to pour out of the box.
It could, theoretically, get us into trouble later should someone
attempt zalgo text. But doing zalgo text is more of a silliness that
varies in behavior across rendering platforms anyway.
## Validation Steps Performed
- Ran the old conhost GDI renderer and observed
- Ran the new Terminal DX renderer and observed
- Made the code change
- Observed that the height and approximate display characteristics of
the U+2591 shade and neighboring characters now matches with the conhost
GDI style to stay within its lane.
## Summary of the Pull Request
- Height adjustment of a glyph is now restricted to itself in the DX
renderer instead of applying to the entire run
- ConPTY compensates for drawing the right half of a fullwidth
character. The entire render base has this behavior restored now as
well.
## PR Checklist
* [x] Closes#2191
* [x] I work here
* [x] Tests added/passed
* [x] No doc
* [x] Am core contributor.
## Detailed Description of the Pull Request / Additional comments
Two issues:
1. On the DirectX renderer side, when confronted with shrinking a glyph,
the correction code would apply the shrunken size to the entire run, not
just the potentially individual glyph that needed to be reduced in size.
Unfortunately while adjusting the horizontal X width can be done for
each glyph in a run, the vertical Y height has to be adjusted for an
entire run. So the solution here was to split the individual glyph
needing shrinking out of the run into its own run so it can be shrunk.
2. On the ConPTY side, there was a long standing TODO that was never
completed to deal with a request to draw only the right half of a
two-column character. This meant that when encountering a request for
the right half only, we would transmit the entire full character to be
drawn, left and right halves, struck over the right half position. Now
we correct the cursor back a position (if space) and draw it out so the
right half is struck over where we believe the right half should be (and
the left half is updated as well as a consequence, which should be OK.)
The reason this happens right now is because despite VIM only updating
two cells in the buffer, the differential drawing calculation in the
ConPTY is very simplistic and intersects only rectangles. This means
from the top left most character drawn down to the row/col cursor count
indicator in vim's modeline are redrawn with each character typed. This
catches the line below the edited line in the typing and refreshes it.
But incorrectly.
We need to address making ConPTY smarter about what it draws
incrementally as it's clearly way too chatty. But I plan to do that with
some of the structures I will be creating to solve #778.
## Validation Steps Performed
- Ran the scenario listed in #2191 in vim in the Terminal
- Added unit tests similar to examples given around glyph/text mapping
in runs from Microsoft community page
This commit introduces a small console-subsystem application whose sole
job is to consume TerminalConnection.dll and hook it up to something
other than Terminal. It is 99% of the way to a generic solution.
I've introduced a stopgap in TerminalPage that makes sure we launch
TerminalAzBridge using ConptyConnection instead of AzureConnection.
As a bonus, this commit includes a class whose sole job it is to make
reading VT input off a console handle not terrible. It returns you a
string and dispatches window size change callbacks.
Fixes#2267.
Fixes#4589.
Related to #2266 (since pwsh needs better VT).
This unifies the rest of the projects around the resource structure laid out in WindowsTerminalUniversal. Now we'll have a single flat structure for resource files and keep the qualifiers in their filenames. It's easier to manage this way.
## Summary of the Pull Request
Debugging our custom UIA providers has been a painful experience because outputting content to VS may result in UIA Clients getting impatient and giving up on extracting data.
Adding tracing allows us to debug these providers without getting in the way of reproducing a bug. This will help immensely with developing accessibility features on Windows Terminal and Console.
This pull request additionally contains payload from #4526:
* Make GetVisibleRanges() return one range (and add tracing for it).
`ScreenInfoUiaProvider::GetVisibleRanges()` used to return one range per line of visible text. The documentation for this function says that we should return one per contiguous span of text. Since all of the text in the TermControl will always be contiguous (at least by our standards), we should only ever be returning one range.
## PR Checklist
* [x] Closes#1914. Closes#4507.
* [x] CLA signed
## Detailed Description of the Pull Request / Additional comments
`UiaTracing` is a singleton class that is in charge of registration for trace logging. `TextRange` is used to trace `UiaTextRange`, whereas `TextProvider` is used to trace `ScreenInfoUiaProviderBase`.
`_getValue()` is overloaded to transform complex objects and enums into a string for logging.
`_getTextValue()` had to be added to be able to trace the text a UiaTextRange included. This makes following UiaTextRanges much simpler.
## Validation Steps Performed
Performed a few operations when under NVDA/Narrator and manually checked the results.
## Summary of the Pull Request
Adds an ETW provider for tracing out operations inside the DirectX Renderer.
## References
This supports #2191 and #778 and other rendering issues.
## PR Checklist
* [x] I work here
## Detailed Description of the Pull Request / Additional comments
This declares and defines the provider with the a GUID appropriate for the namespace and adds an initial invalidation rectangle method for figuring out what is being drawn mostly to understand what could be differential.
## Validation Steps Performed
Implemented provider.
Opened real-time ETW tracing tool
Ran the Terminal and watched invalidation events appear live
## Summary of the Pull Request
We used to return multiple text ranges to represent one selection. We only support one selection at a time, so we should only return one range.
Additionally, I moved all TriggerSelection() calls to the renderer from Terminal to TermControl for consistency. This ensures we only call it _once_ when we make a change to our selection state.
## References
#2447 - helps polish Signaling for Selection
#4465 - This is more apparent as the problem holding back Signaling for Selection
## PR Checklist
* [x] Closes#4452
Tested using Accessibility Insights.
## Summary of the Pull Request
Currently, clicking on an unfocused terminal with a selection active will trigger `copyOnSelect`. This is because the check for `copyOnSelect` and copying to the clipboard is bound to when the Pointer is released. This works fine for when a user performs a click-drag selection, but it inadvertently also triggers when the user performs a single click on an unfocused terminal. We expect `copyOnSelect` to trigger only on the first time a selection is completed.
This PR will allow the user to single click on an unfocused terminal that has a selection active without triggering a copyOnSelect. It also ensures that any click-drag selection, whether it's on an unfocused or focused terminal, will trigger copyOnSelect.
## PR Checklist
* [x] Closes#4255
## Validation Steps Performed
Performed manual testing involving permutations of multiple panes, tabs, in focus, and out of focus.
## Summary of the Pull Request
This will allow us to run the ConPTY tests in CI.
## PR Checklist
* [x] Closes MSFT:24265197
* [X] I've discussed this with core contributors already.
## Validation Steps Performed
I've run the tests.
Please note: this code is unchanged (apart from `wil::ScopeExit` -> `wil::scope_exit`) from Windows. Now is not the time to comment on their perfectness.
Fixed inconsistent scrolling when using both touchscreen and precision
touchpad.
Scrolling jumpiness is caused by rounding errors. Instead of retrieving
the current scrolling value from `GetScrollOffset`, which is already
rounded in `int`, let the scrolling operation to operate on
`_scrollBar`'s `Value` directly (which uses `double`) in
`TermControl.cpp`.
TermControl now also respects WHEEL_DELTA, which it was previously
ignoring, to determine how many scroll wheel detents were used.
Testing scrolling on the following scenario manually:
- nonscrollable terminal (e.g. the window is large enough to contain the
current buffer).
- scrolling to the topmost and bottom-most.
- scrolling TUI apps such as `nano` and `more` in WSL.
- after clearing the terminal, both in cmd and WSL.
... has the same behavior between using touchscreen or precision trackpad
and regular mouse wheel.
Closes#4554 (original pull request)
Closes#1066Closes#4542
Reduce unnecessary SetEvent CPU overhead by using `std::atomic_flag` to avoid setting kernel events when the painting thread is already awake and running.
## Summary of the Pull Request
- If no one is listening to the ETW provider for the VT Renderer for diagnostic purposes, do not spend time allocating/deleting/formatting strings for presentation in TraceLogging messages.
<!-- Please review the items on the PR checklist before submitting-->
## PR Checklist
* [x] Closes something I noticed while working on the renderer.
* [x] I work here.
* [x] Existing tests should pass
* [x] No doc
* [x] Am core contributor.
## Validation Steps Performed
WPR/WPA
Before: 321/3016 samples on hot path (10.64%)
After: 0/1266 samples on the same path (0%)
## Summary of the Pull Request
The issue seems to be how `SwapChainScaleChanged` gets fired and attempts to tell the renderer
to `UpdateDPI` when the renderer is gone. So, as a quick bandaid, we'll put a quick check to only do the thing if the renderer is alive.
## PR Checklist
* [x] Closes#4539
* [x] CLA signed. If not, go over [here](https://cla.opensource.microsoft.com/microsoft/Terminal) and sign the CLA
* [x] Tests added/passed
## Validation Steps Performed
Held my new tab button for about thirty seconds then held the close tab button until all tabs closed without a crash.
## Summary of the Pull Request
This PR tries to address some of the weird interactions with pointer pressed events when the Terminal isn't in focus. Here's the four things that have changed as part of this PR;
1. This PR will allow the user to be able to make a selection with a click-drag without having to first perform a single click on a tab/pane to bring it to focus.
2. Another weird bug that's fixed in this PR is where trying to make a selection on an unfocused tab when it already has a selection active will simply extend the existing selection instead of making a new one.
3. Not related to the issue that his PR closes: a right click will now focus the tab/pane.
I've made sure that we still have the existing functionality where a single click on an unfocused tab/pane does not make a single-cell selection and just focuses the tab/pane.
## PR Checklist
* [x] Closes#4282
* [x] CLA signed. If not, go over [here](https://cla.opensource.microsoft.com/microsoft/Terminal) and sign the CLA
* [x] Tests added/passed
## Validation Steps Performed
Played around with all sorts of selection when in-focus and out of focus with multiple panes and tabs.
Unit tests still pass as well.
