Commit graph

64 commits

Author SHA1 Message Date
Leonard Hecker 479ef264b2
Implement basic profile matching (#11390)
This implements command line matching for `CascadiaSettings::GetProfileForArgs`.
The command lines for all user profiles are resolved to absolute file paths,
argument quotes are standardized ("canonicalized") and the results are cached.

When `GetProfileForArgs` is called with a Commandline() value, we "canonicalize"
the argument as well and find the profile that is the longest prefix.
If none could be found the default profile is returned.

## PR Checklist
* [x] Closes #9458
* [x] Closes #10952
* [x] I work here
* [ ] Tests added/passed

## Validation Steps Performed

* Open a `cmd.exe` tab in the store-version of WT
* Run `start cmd`
  --> A tab with the `cmd.exe` profile opens
* Run `start pwsh.exe`
  --> A tab with the PowerShell 7 profile opens
* Run PowerShell 7 from the start menu
  --> A tab with the PowerShell 7 profile opens
* Create a symlink for PowerShell 7 and launch `pwsh.exe` from there
  --> A tab with the PowerShell 7 profile opens
2021-10-08 00:40:10 +00:00
James Holderness 09d0ac768a
Add an enum-compatible bitset class. (#10492)
## Summary of the Pull Request

This introduces a new TIL class that is equivalent in functionality to a `std::bitset`, but where the positions in the bitset are enum values. It also has a few additional methods allowing for setting and testing multiple positions at the same time. The idea is that this class could be used in place of the `WI_SetFlag` and `WI_IsFlagSet` macros when working with sets of flags.

## PR Checklist
* [x] Closes #10432
* [x] CLA signed.
* [x] Tests added/passed
* [ ] Documentation updated.
* [ ] Schema updated.
* [x] I've discussed this with core contributors already. Issue number where discussion took place: #10432

## Validation Steps Performed

I've added a few unit tests that verify the behaviour of all the new methods that aren't part of `std::bitset`. I've also tried it out as a replacement for the `GridLines` enum used in the renderer, and confirmed that it has all the functionality needed to replace that cleanly.
2021-09-27 13:27:29 +00:00
Leonard Hecker 168d28b036
Reduce usage of Json::Value throughout Terminal.Settings.Model (#11184)
This commit reduces the code surface that interacts with raw JSON data,
reducing code complexity and improving maintainability.
Files that needed to be changed drastically were additionally
cleaned up to remove any code cruft that has accrued over time.

In order to facility this the following changes were made:
* Move JSON handling from `CascadiaSettings` into `SettingsLoader`
  This allows us to use STL containers for data model instances.
  For instance profiles are now added to a hashmap for O(1) lookup.
* JSON parsing within `SettingsLoader` doesn't differentiate between user,
  inbox and fragment JSON data, reducing code complexity and size.
  It also centralizes common concerns, like profile deduplication and
  ensuring that all profiles are assigned a GUID.
* Direct JSON modification, like the insertion of dynamic profiles into
  settings.json were removed. This vastly reduces code complexity,
  but unfortunately removes support for comments in JSON on first start.
* `ColorScheme`s cannot be layered. As such its `LayerJson` API was replaced
  with `FromJson`, allowing us to remove JSON-based color scheme validation.
* `Profile`s used to test their wish to layer using `ShouldBeLayered`, which
  was replaced with a GUID-based hashmap lookup on previously parsed profiles.

Further changes were made as improvements upon the previous changes:
* Compact the JSON files embedded binary, saving 28kB
* Prevent double-initialization of the color table in `ColorScheme`
* Making `til::color` getters `constexpr`, allow better optimizations

The result is a reduction of:
* 48kB binary size for the Settings.Model.dll
* 5-10% startup duration
* 26% code for the `CascadiaSettings` class
* 1% overall code in this project

Furthermore this results in the following breaking changes:
* The long deprecated "globals" settings object will not be detected and no
  warning will be created during load.
* The initial creation of a new settings.json will not produce helpful comments.

Both cases are caused by the removal of manual JSON handling and the
move to representing the settings file with model objects instead

## PR Checklist
* [x] Closes #5276
* [x] Closes #7421
* [x] I work here
* [x] Tests added/passed

## Validation Steps Performed

* Out-of-box-experience is identical to before ✔️
  (Except for the settings.json file lacking comments.)
* Existing user settings load correctly ✔️
* New WSL instances are added to user settings ✔️
* New fragments are added to user settings ✔️
* All profiles are assigned GUIDs ✔️
2021-09-22 16:27:31 +00:00
Steffen 7712104983
Refactor u8u16 and u16u8 conversion functions (#10966)
* Perform the handling of partial code points in the `u8u16` and `u16u8`
  conversion functions without preparation in a preliminary buffer.
* Simplify partials handling in `u8u16` (perf).
* Declare the parameters for the incoming data as referenced
  string_views.
* Simplify templatization.
* Simplify exception handling.

We complete the partial codepoint in the 4-bytes long cache and convert
it separately. This makes the cache ready for capturing the next
partials before the remaining string is converted. This way, we neither
need to copy the whole string into a buffer which contains complete
codepoints, nor do we need to allocate an unnecessarily long buffer
which exists for the life time of the state class instance.

Finding and capturing of partials is performed in a more linear code
using the evaluation of the length of a code point.

The parameters for the incoming data are now explicitely declared to be
referenced string_views.

`CATCH_RETURN` is used to improve the readability of the code.

## Validation Steps Performed
* manually tested
* unit tests passed

Closes #10946

Co-authored-by: Leonard Hecker <lhecker@microsoft.com>
2021-08-23 23:48:13 +00:00
Leonard Hecker 8779249b12
Release unneeded memory more eagerly from conhost (#10738)
The `_CONSOLE_API_MSG` buffer is resized to cover an entire message.
Later on any UTF-8 data is cached in a separate temporary
buffer inside `til::u8state` to prevent lone surrogate pairs.

Both cases are problematic as neither buffer is freed after the read
has finished. Passing a 100MB buffer to conhost once will thus cause it
to continue using ~220MB of physical memory until the conhost process exits.

This change releases unneeded memory as soon as the requested buffer
size has halved. In practice this means that once a command has returned
all buffers will shrink, as the shell commonly sends very small messages.

## PR Checklist
* [x] Closes #10731
* [x] I work here
* [x] Tests added/passed

## Validation Steps Performed

* Buffers aren't reallocated during printing ✔️
* Buffers shrink after printing finished ✔️
2021-07-21 05:59:57 +00:00
Leonard Hecker 10b12ac90c
Introduce vk() and sc() key chord specifiers (#10666)
This commit introduces an alternative to specifying key bindings as a combination of key modifiers and a character. It allows you to specify an explicit virtual key as `vk(nnn)`.
Additionally this commit makes it possible to bind actions to scan codes. As scan code 41 appears to be the button below the Escape key on virtually all keyboards, we'll be able to bind the quake mode hotkey to `win+sc(41)` and have it work consistently across most if not all keyboard layouts.

## PR Checklist
* [x] Closes #7539, Closes #10203
* [x] I work here
* [x] Tests added/passed

## Validation Steps Performed

The following was tested both on US and DE keyboard layouts:
* Ctrl+, opens settings ✔️
* Win+` opens quake mode window ✔️
* Ctrl+plus/minus increase/decrease font size ✔️
2021-07-20 22:34:51 +00:00
Mike Griese 7f3bc3cb04
Only access ControlInteractivity through the projection (#10051)
## Summary of the Pull Request

This forces the `TermControl` to only use `ControlCore` and `ControlInteractivity` via their WinRT projections. We want this, because WinRT projections can be used across process boundaries. In the future, `ControlCore` and `ControlInteractivity` are going to be living in a different process entirely from `TermControl`. By enforcing this boundary now, we can make sure that they will work seamlessly in the future.

## References
* Tear-out: #1256
* Megathread: #5000
* Project: https://github.com/microsoft/terminal/projects/5

## PR Checklist
* [x] Closes https://github.com/microsoft/terminal/projects/5#card-50760270
* [x] I work here
* [x] Tests added/passed
* [n/a] Requires documentation to be updated

## Detailed Description of the Pull Request / Additional comments

Most all this was just converting pure c++ types to winrt types when possible. I've added a couple helper projections with `til` converters, which made most of this really easy.

The "`MouseButtonState` needs to be composed of `Int32`s instead of `bool`s" is MENTAL. I have no idea why this is, but when I had the control OOP in the sample, that would crash when trying to de-marshal the bools. BODGY.

The biggest changes are in the way the UIA stuff is hooked up. The UiaEngine needs to be attached directly to the `Renderer`, and it can't be easily projected, so it needs to live next to the `ControlCore`. But the `TermControlAutomationPeer` needed the `UiaEngine` to help implement some interfaces.

Now, there's a new layer we've introduced. `InteractivityAutomationPeer` does the `ITextProvider`, `IControlAccessibilityInfo` and the `IUiaEventDispatcher` thing. `TermControlAutomationPeer` now has a 
`InteractivityAutomationPeer` stashed inside itself, so that it can ask the interactivity layer to do the real work. We still need the `TermControlAutomationPeer` though, to be able to attach to the real UI tree.

## Validation Steps Performed

The terminal behaves basically the same as before.

Most importantly, I whipped out Accessibility Insights, and the Terminal looks the same as before.
2021-07-19 11:59:30 -05:00
Leonard Hecker f68324cd09
Fix output stuttering using a ticket lock (#10653)
`SRWLOCK`, as used by `std::shared_mutex`, is a inherently unfair mutex
and makes no guarantee whatsoever whether a thread may acquire the lock
in a timely manner. This is problematic for our renderer which relies on
being able to acquire the lock in a timely and predictable manner.
Drawing stalls of up to one minute have been observed in tests.

This issue can be solved with a primitive ticket lock, which is 10x
slower than a `SRWLOCK` but still sufficiently fast for our use case
(10M locks per second per thread). It's likely that any non-trivial lock
duration will diminish the difference to "negligible".

## Validation Steps Performed

* It still blends ✔️
2021-07-14 23:41:22 +00:00
Leonard Hecker fca87b2bb5
Clean up KeyChordSerialization (#10654)
This commit is a preparation for upcoming changes to
KeyChordSerialization for #7539 and #10203.  It introduces several
string helpers to simplify key chord parsing and get rid of our implicit
dependency on locale sensitive functions, which are known to behave
erratically.

Additionally key chord serialization used to depend on iteration order
of a hashmap which caused different strings to be returned for the same
key chord. This commit fixes the iteration order and will always return
the same string.

## Validation Steps Performed

* Key bindings are correctly parsed ✔️
* Key bindings are correctly serialized 
2021-07-14 21:22:24 +00:00
Leonard Hecker 0d9a357373
Introduce til/latch.h, til/mutex.h and til/throttled_func.h (#10403)
This commit introduce three new `til` features:
* "til/latch.h": A std::latch clone, until we're on C++20.
* "til/mutex.h": A safe mutex wrapper, which only allows you access to the protected data after locking it. No more forgetting to lock mutexes!
* "til/throttled_func.h": Function invocation throttling used to be available as the `ThrottledFunc` class already. But this class is vastly more efficient and doesn't rely on any WinRT types.

This PR also adds a `til::ends_with` string helper which is `til::starts_with` counterpart.

## Validation Steps Performed

* Scrollbar throttling still works as it used to ✔️
* No performance regressions when printing big.txt ✔️

Closes #10393
2021-06-22 20:16:31 +00:00
Leonard Hecker e34897cd1f
Add a language switcher using PrimaryLanguageOverride (#10309)
## Summary of the Pull Request

This PR adds a global "language" setting, which may be set to any supported BCP 47 tag.
Additionally a ComboBox is added to the settings UI under "Appearance", listing all languages with their localized names.

This PR introduces one new issue: If you change the language while the app is running, the UI will be in a torn state, as not all UI elements refresh automatically if the `PrimaryLanguageOverride` is changed.

## PR Checklist
* [x] Closes #5497
* [x] I work here
* [x] Tests added/passed
* [ ] Documentation updated. If checked, please file a pull request on [our docs repo](https://github.com/MicrosoftDocs/terminal) and link it here: #xxx
* [x] Schema updated

## Validation Steps Performed

* UI language changes when changing the "language" in settings.json before starting WT / while WT is running. ✔️
* "language" field is removed from settings.json if "Use system default" is selected. ✔️
* "language" field is added or updated in settings.json if any other language is selected. ✔️
* Removes qps- languages if debugFeatures is false. ✔️
* Correctly refreshes all UI elements with the new language. 
2021-06-10 23:24:21 +00:00
Dustin L. Howett 0dedb93cde
rle: fix build with clang by adding a deduction guide (#10154) 2021-05-24 13:33:43 +00:00
Leonard Hecker a8e4bedae3
Introduce til::rle - a run length encoded vector (#10099)
## Summary of the Pull Request

Introduces `til::rle`, a vector-like container which stores elements of
type T in a run length encoded format. This allows efficient compaction
of repeated elements within the vector.

## References

* #8000 - Supports buffer rewrite work. A re-use of `til::rle` will be
  useful as a column counter as we pursue NxM storage and presentation.
* #3075 - The new iterators allow skipping forward by multiple units,
  which wasn't possible under `TextBuffer-/OutputCellIterator`.
  Additionally it also allows a bulk insertions.
* #8787 and #410 - High probability this should be `pmr`-ified
  like `bitmap` for things like `chafa` and `cacafire`
  which are changing the run length frequently.

## PR Checklist

* [x] Closes #8741
* [x] I work here.
* [x] Tests added.
* [x] Tests passed.

## Validation Steps Performed

* [x] Ran `cacafire` in `OpenConsole.exe` and it looked beautiful
* [x] Ran new suite of `RunLengthEncodingTests.cpp`

Co-authored-by: Michael Niksa <miniksa@microsoft.com>
2021-05-20 17:27:50 +00:00
Mike Griese dc6631355f
Make the window name _quake special (#9785)
## Summary of the Pull Request

This PR adds some special behavior to the window named "\_quake".
* When creating the quake window, it ignores "initialRows" and "initialCols" and opens on the top half of the monitor.
  - It uses `initialPosition` to determine which monitor this is
* It cannot be moved
* It can only be vertically resized on the bottom border.
* It's always in focus mode.
  - We should probably have an issue tracking "Allow showing tabs in focus mode"? Maybe?
  - This one element is maybe the one I'm least attached to

When renaming a window to "\_quake", it adopts all those behaviors as well. It does not exit focus mode when leaving QM, nor does it resize back. That seemed unnecessary. 

## References

* As spec'ed in #9274
* See also #8888

## PR Checklist
* [x] In the pursuit of #653 
* [x] I work here
* [ ] Tests added/passed
* [ ] Requires documentation to be updated, but I'm not gonna do any of that till quake mode is totally done. 

## Detailed Description of the Pull Request / Additional comments

Note that this doesn't do things like:
* dropdown
* global hotkey summon 
* summon to the current monitor 
* summon to the current desktop

I'm doing #653 _very_ piecemeal, to try and make the PRs less egregious.

## Validation Steps Performed

* validated that center on launch still works
* validated that QM works on different monitors based on `initialPosition`
* validated entering/exiting QM behaves as expected

## TODO!
* [ ] When snapping the quake window between desktops with <kbd>win+shift+arrow</kbd>, the window doesn't horizontally re-size to the new monitor dimensions. It should.
2021-04-26 19:36:23 +00:00
Ikko Ashimine ebd07d7125
Fix typo in replace.h (#9679)
occurences -> occurrences
2021-04-06 10:38:51 -05:00
Dustin L. Howett 295fa38295
Introduce MS.Term.Core.Color to replace W.U.Color for Core/Control/TSM (#9658)
This pull request introduces Microsoft.Terminal.Core.Color as an
alternative to both Windows.UI.Color and uint32_t/COLORREF in the
TerminalCore, ...Control, ...SettingsModel and ...SettingsEditor layers.

M.T.C.Color is trivially convertible to/from til::color and therefore
to/from COLORREF, W.U.Color, and any other color representation we might
need².

I've replaced almost every use of W.U.Color and uint32_t-as-color in the
above layers, with minor exception¹.

The need for this work is twofold.

First: We cannot bear a dependency from TerminalCore (which should,
on paper, be Windows 7 compatible) on Windows.UI or any other WinRT
namespace.

This work removes one big dependency on Windows.UI, but it does not go
all the way.

Second: TerminalCore chose to communicate mostly in packed uint32s
(COLORREF), which was inherently lossy and dangerous.

¹ The UI layers (TerminalControl, TerminalApp) still use
Windows.UI.Color as they are intimately connected to the UWP XAML UI.

² In the future, we might even be able to *use* the alpha channel...

## PR Checklist
* [x] I ran into the need for this when I introduced cursor inversion
* [X] Fixes a longstanding itch

## Validation Steps Performed
Built and ran all tests for the impacted layers, even the local ones!
2021-03-30 20:15:49 +00:00
Dustin Howett 3909cc103a Merged PR 5770253: [Git2Git] Merged PR 5760120: Add propsheet chooser to Windows
[Git2Git] Merged PR 5760120: Add propsheet chooser to Windows

Now the inbox console propsheet can choose which terminal is default

Related work items: MSFT-32007202 #492

Retrieved from https://microsoft.visualstudio.com os.2020 OS official/rs_wdx_dxp_windev d80f506858bd990c267de6cefae7ff55707b3a57
2021-03-10 01:19:04 +00:00
Michael Niksa 525be22bd8
Eliminate more transient allocations: Titles and invalid rectangles and bitmap runs and utf8 conversions (#8621)
## References
* See also #8617 

## PR Checklist
* [x] Supports #3075
* [x] I work here.
* [x] Manual test.

## Detailed Description of the Pull Request / Additional comments

### Window Title Generation
Every time the renderer checks the title, it's doing two bad things that
I've fixed:
1. It's assembling the prefix to the full title doing a concatenation.
   No one ever gets just the prefix ever after it is set besides the
   concat. So instead of storing prefix and the title, I store the
   assembled prefix + title and the bare title.
2. A copy must be made because it was returning `std::wstring` instead
   of `std::wstring&`. Now it returns the ref.

### Dirty Area Return
Every time the renderer checks the dirty area, which is sometimes
multiple times per pass (regular text printing, again for selection,
etc.), a vector is created off the heap to return the rectangles. The
consumers only ever iterate this data. Now we return a span over a
rectangle or rectangles that the engine must store itself.
1. For some renderers, it's always a constant 1 element. They update
   that 1 element when dirty is queried and return it in the span with a
   span size of 1.
2. For other renderers with more complex behavior, they're already
   holding a cached vector of rectangles. Now it's effectively giving
   out the ref to those in the span for iteration.

### Bitmap Runs
The `til::bitmap` used a `std::optional<std::vector<til::rectangle>>`
inside itself to cache its runs and would clear the optional when the
runs became invalidated. Unfortunately doing `.reset()` to clear the
optional will destroy the underlying vector and have it release its
memory. We know it's about to get reallocated again, so we're just going
to make it a `std::pmr::vector` and give it a memory pool. 

The alternative solution here was to use a `bool` and
`std::vector<til::rectangle>` and just flag when the vector was invalid,
but that was honestly more code changes and I love excuses to try out
PMR now.

Also, instead of returning the ref to the vector... I'm just returning a
span now. Everyone just iterates it anyway, may as well not share the
implementation detail.

### UTF-8 conversions
When testing with Terminal and looking at the `conhost.exe`'s PTY
renderer, it spends a TON of allocation time on converting all the
UTF-16 stuff inside to UTF-8 before it sends it out the PTY. This was
because `ConvertToA` was allocating a string inside itself and returning
it just to have it freed after printing and looping back around again...
as a PTY does.

The change here is to use `til::u16u8` that accepts a buffer out
parameter so the caller can just hold onto it.

## Validation Steps Performed
- [x] `big.txt` in conhost.exe (GDI renderer)
- [x] `big.txt` in Terminal (DX, PTY renderer)
- [x] Ensure WDDM and BGFX build under Razzle with this change.
2021-02-16 20:52:33 +00:00
Dustin Howett c3e0a8dce5 Merged PR 5676675: Reflect OS build fixes on top of ae8347f33
Due to a minor OS issue, we needed to shim PMR _even more_.

Retrieved from https://microsoft.visualstudio.com os.2020 OS official/rs_wdx_dxp_windev a83daa5e2af50121d79be082d005ff2e969ad18e

Related work items: MSFT-31478342
2021-02-11 18:19:33 +00:00
Dustin Howett 054d7dbb1c Merged PR 5612120: Migrate OSS up to ae8347f33
Related work items: MSFT-31478342
2021-01-26 19:39:20 +00:00
Dustin Howett 8b855ca88c Merged PR 5598201: Reflect OS build changes atop a8b404463
The Windows build system doesn't support PMR yet, so we had to add a workaround. :(

Retrieved from https://microsoft.visualstudio.com os.2020 OS official/rs_wdx_dxp_windev 1614b27830a07484c18628ec7d9abc5f9d9b8a0b

Related work items: MSFT-31337042
2021-01-22 04:57:26 +00:00
Dustin L. Howett 2919d96c21
Give til::bitmap custom allocator support and add til::pmr::bitmap (#8787)
`til::details::bitmap<Allocator>` will use `Allocator` for its
`dynamic_bitset`, and it will use a rebound allocator for its run storage.

Allocator should be an allocator type storing `unsigned long long`, the
backing store type for `dynamic_bitset`.

I've introduced a type alias, `til::bitmap`, which papers over the
allocator choice for all existing code. I've also introduced a second
type alias, `til::pmr::bitmap`, which lets a consumer use the C++
polymorphic allocator system.

I chatted with @miniksa about whether to keep the "full" allocator
version in `details` or not. We decided that for the simplicity of the
`til` namespace, we would. If anybody has a compelling reason to use
`til::details::bitmap<Allocator>` directly, we can re-evaluate this
decision.
2021-01-19 18:24:39 +00:00
Leonard Hecker de49cf1d0d
Fix #8695: til::spsc assignment operators don't return anything (#8811)
The following code didn't previously work as the assignment operators
didn't return a self reference:

```cpp
auto channel = til::spsc::channel<QueueItem>(100);
auto producer = std::move(channel.first);
channel.first = std::move(producer);
```

## Validation Steps Performed

I've added a basic smoke test for `til::spsc`.

Closes #8695
2021-01-19 11:41:08 +00:00
PankajBhojwani 2bf5d18c84
Add support for autodetecting URLs and making hyperlinks (#7691)
This pull request is the initial implementation of hyperlink auto
detection

Overall design:
- Upon startup, TerminalCore gives the TextBuffer some patterns it
  should know about
- Whenever something in the viewport changes (i.e. text
  output/scrolling), TerminalControl tells TerminalCore (through a
  throttled function for performance) to retrieve the visible pattern
  locations from the TextBuffer
- When the renderer encounters a region that is associated with a
  pattern, it paints that region differently 

References #5001
Closes #574
2020-10-28 20:24:43 +00:00
Carlos Zamora b603929214
Make Global and Profile settings inheritable (#7923)
## Summary of the Pull Request
Introduces `IInheritable` as an interface that helps move cascading settings into the Terminal Settings Model. `GlobalAppSettings` and `Profile` both are now `IInheritable`. `CascadiaSettings` was updated to `CreateChild()` for globals and each profile when we are loading the JSON data.

IInheritable does most of the heavy lifting. It introduces a two new macros and the interface. The macros help implement the fallback functionality for nullable and non-nullable settings.

## References
#7876 - Spec Addendum
#6904 - TSM Spec
#1564 - Settings UI

#7876 - `Copy()` needs to be updated to include _parent
2020-10-27 17:35:09 +00:00
Chester Liu 02b120236c
Add support for more OSC color formats (#7578)
* Correct the behaviour of parsing `rgb:R/G/B`. It should be interpreted
  as `RR/GG/BB` instead of `0R/0G/0B`
* Add support for `rgb:RRR/GGG/BBB` and `rgb:RRRR/GGGG/BBBB`. The
  behaviour of 12 bit variants is to repeat the first digit at the end,
  e.g. `rgb:123/456/789` becomes `rgb:1231/4564/7897`.
* Add support for `#` formats. We are following the rules of
  [XParseColor] by interpreting `#RGB` as `R000G000B000`.
* Add support for XOrg app color names, which are supported by xterm, VTE
  and many other terminal emulators.
* Multi-parameter OSC 4 is now supported.
* The chaining of OSC 10-12 is not yet supported. But the parameter
  validation is relaxed by parsing the parameters as multi-params but
  only use the first one, which means `\e]10;rgb:R/G/B;` and
  `\e]10:rgb:R/G/B;invalid` will execute `OSC 10` with the first color
  correctly. This fixes some of the issues mentioned in #942 but not
  all of them.

[XParseColor]: https://linux.die.net/man/3/xparsecolor

Closes #3715
2020-10-14 17:29:10 -07:00
Dustin L. Howett d33ca7e8eb
From orbit, nuke the Telnet connection and all supporting infra. (#7840)
This is not going to be our plan of record for Universal going forward.

This updates the Universal configuration to 1) match non-universal and 2) switch to local applications
2020-10-09 18:59:58 +00:00
Carlos Zamora 2608e94822
Introduce TerminalSettingsModel project (#7667)
Introduces a new TerminalSettingsModel (TSM) project. This project is
responsible for (de)serializing and exposing Windows Terminal's settings
as WinRT objects.

## References
#885: TSM epic
#1564: Settings UI is dependent on this for data binding and settings access
#6904: TSM Spec

In the process of ripping out TSM from TerminalApp, a few other changes
were made to make this possible:
1. AppLogic's `ApplicationDisplayName` and `ApplicationVersion` was
   moved to `CascadiaSettings`
   - These are defined as static functions. They also no longer check if
     `AppLogic::Current()` is nullptr.
2. `enum LaunchMode` was moved from TerminalApp to TSM
3. `AzureConnectionType` and `TelnetConnectionType` were moved from the
   profile generators to their respective TerminalConnections
4. CascadiaSettings' `SettingsPath` and `DefaultSettingsPath` are
   exposed as `hstring` instead of `std::filesystem::path`
5. `Command::ExpandCommands()` was exposed via the IDL
   - This required some of the warnings to be saved to an `IVector`
     instead of `std::vector`, among some other small changes.
6. The localization resources had to be split into two halves.
   - Resource file linked in init.cpp. Verified at runtime thanks to the
     StaticResourceLoader.
7. Added constructors to some `ActionArgs`
8. Utils.h/cpp were moved to `cascadia/inc`. `JsonKey()` was moved to
   `JsonUtils`. Both TermApp and TSM need access to Utils.h/cpp.

A large amount of work includes moving to the new namespace
(`TerminalApp` --> `Microsoft::Terminal::Settings::Model`).

Fixing the tests had its own complications. Testing required us to split
up TSM into a DLL and LIB, similar to TermApp. Discussion on creating a
non-local test variant can be found in #7743.

Closes #885
2020-10-06 09:56:59 -07:00
Dustin L. Howett 6f051140da
Introduce til::presorted_static_map (#7640)
til::static_map can't be constexpr until we move to C++20.
It can't be constexpr because std::sort isn't constexpr until then.
This poses a problem: if we start using it and treating it like a map,
we'll incur a potentially high cost in static initialization in both
code size in .text and runtime.

This commit introduces presorted_static_map, which is static_map except
that it doesn't automatically sort its keys. That's the only difference.

At this point, it's just a maplike interface to a constant array of
pairs that does a binary search. It should be used for small tables that
are used infrequently enough as to not warrant their cost in code size
or initialization time. It should also be used for tables that aren't
going to be edited much by developers (like the color table in #7578.)
2020-09-29 19:01:50 +00:00
Dustin Howett 863e3e5c22 Fix code format from inbox
It appears as though the pragma above broke the format below.
2020-09-16 10:19:49 -07:00
Dustin Howett 6c7a3aca3f Merged PR 5181334: OS build fixes on top of abf8805e0
til::color
It turns out that clang/gcc are okay with the anonymous
struct, but the CL we use in Windows was not.
2020-09-16 01:50:07 +00:00
Dustin L. Howett c17f448d73
Make til::color's COLORREF conversion more optimal (#7619)
Clang (10) has no trouble optimizing the COLORREF conversion operator to
a simple 32-bit load with mask (!) even though it's a series of bit
shifts across multiple struct members.

MSVC (19.24) doesn't make the same optimization decision, and it emits
three 8-bit loads and some shifting.

In any case, the optimization only applies at -O2 (clang) and above.

In this commit, we leverage the spec-legality of using unions for type
conversions and the overlap of four uint8_ts and a uint32_t to make the
conversion very obvious to both compilers.

x86_64 msvc | O0 | O1 | O2
------------|----|----|--------------------
shifts      | 12 | 11 | 11 (fully inlined)
union       |  5 |  1 |  1 (fully inlined)

x86_64 clang | O0 | O1 | O2 + O3
-------------|----|----|--------------------
shifts       | 14 |  5 |  1 (fully inlined)
union        |  9 |  3 |  1 (fully inlined)

j4james brought up some concerns about til::color's minor wastefulness
in https://github.com/microsoft/terminal/pull/7578#discussion_r487355989.

This is a clear, simple transformation that saves us a few instructions
in a relatively common case, so I'm accepting a micro-optimization even
though we don't have data showing this to be a hot spot.
2020-09-14 18:51:03 +00:00
Dustin L. Howett dbbe820ae4
Update clang-format to 10.0 (#7389)
This commit removes our local copy of clang-format 8 and replaces it
with a newly-built nuget package containing clang-format 10.

This resolves the inconsistency between our version of clang-format and
the one shipped in Visual Studio.

A couple minor format changes were either required or erroneously forced
upon us--chief among them is a redistribution of `*`s around SAL
annotations in inline class members of COM classes. Don't ask why; I
couldn't figure it out.

We had some aspirational goals for our formatting, which were left in
but commented out. Enabling them changes our format a little more than
I'm comfortable with, so I uncommented them and locked them to the
format style we've been using for the past year. We may not love it, but
our aspirations may not matter here any longer. Consistent formatting is
better than perfect formatting.
2020-08-25 17:15:43 +00:00
Dustin L. Howett 66fd9c367d
Add til::static_map, a constexpr key-value store (#7323)
This is based on (cribbed almost directly from) code written by the
inimitable @StephanTLavavej on one of our mailing lists.

This is a nice generic version of the approach used in
JsonUtils::EnumMapper and CodepointWidthDetector: a static array of
key-value pairs that we binary-search at runtime (or at compile time, as
the case may be.)

Keys are not required to be sorted, as we're taking advantage of
constexpr std::sort (VS 16.6+) to get the compiler to do it for us. How
cool is that?

static_map presents an operator[] or at much like
std::map/std::unordered_map does.

I've added some tests, but they're practically fully-solveable at compile
time so they pretty much act like `VERIFY_IS_TRUE(true)`.
2020-08-18 18:05:14 +00:00
Michael Niksa a50c48cd60
Compensate for new warnings and STL changes in VS 16.7 (#7319)
New warnings were added in VS 16.7 and `std::map::erase` is now `noexcept`.
Update our code to be compatible with the new enforcement.

## PR Checklist
* [x] Closes broken audit in main after Agents updated over the weekend.
* [x] I work here.
* [x] Audit mode passes now
* [x] Am core contributor.

## Validation Steps Performed
* [x] Ran audit mode locally
2020-08-18 16:59:31 +00:00
Mike Griese dcc2799457
Add support for iterable, nested commands (#6856)
## Summary of the Pull Request

This PR adds support for both _nested_ and _iterable_ commands in the Command palette.
![nested-commands-000](https://user-images.githubusercontent.com/18356694/87072916-2d991c00-c1e2-11ea-8917-a70e8b8b9803.gif)

* **Nested commands**: These are commands that include additional sub-commands. When the user selects on of these, the palette will update to only show the nested commands.
* **Iterable commands**: These are commands what allow the user to define only a single command, which is repeated once for every profile. (in the future, also repeated for color schemes, themes, etc.)

The above gif uses the following json:

```json
        {
            "name": "Split Pane...",
            "commands": [
                {
                    "iterateOn": "profiles",
                    "name": "Split with ${profile.name}...",
                    "commands": [
                        { "command": { "action": "splitPane", "profile": "${profile.name}", "split": "automatic" } },
                        { "command": { "action": "splitPane", "profile": "${profile.name}", "split": "vertical" } },
                        { "command": { "action": "splitPane", "profile": "${profile.name}", "split": "horizontal" } }
                    ]
                }
            ]
        },
```

## References

## PR Checklist
* [x] Closes #3994
* [x] I work here
* [x] Tests added/passed
* [ ] Requires documentation to be updated - Sure does, but we'll finish polishing this first.

## Detailed Description of the Pull Request / Additional comments

We've now gotta keep the original json for a command around, so that once we know what all the profiles will be, we can expand the commands that need it. 

We've also got to parse commands recursively, because they might have any number of child commands.

These together made the command parsing a _lot_ more complicated, but it feels good so far.

## Validation Steps Performed
* wrote a bunch of tests
* Played with it a bunch
2020-08-13 21:22:46 +00:00
Mike Griese 4e0f31337d
Add support for per-profile tab colors (#7162)
This PR adds support for per-profile tab colors, in accordance with
#7134. This adds a single `tabColor` property, that when set, specifies
the background color for profile's tab. This color can be overridden by
the color picker, and clearing the color with the color picker will
revert to this default color set for the tab.

* Full theming is covered in #3327 & #5772 

Validation: Played with setting this color, both on launch and via
hot-reload

Specified in #7134
Closes #1337
2020-08-07 16:07:42 -07:00
Leonard Hecker b62f5ea850
Added til::spsc, a lock-free, single-producer/-consumer FIFO queue (#6751)
## Summary of the Pull Request

This PR adds the `til::spsc` namespace, which implements a lock-free, single-producer, single-consumer FIFO queue ("channel"). The queue efficiently blocks the caller using Futexes if no data can be written to / read from the queue (e.g. using `WaitOnAddress` on Windows). Furthermore it allows batching of data and contains logic to signal the caller if the other side has been dropped/destructed.

## PR Checklist
* [ ] Closes #xxx
* [x] CLA signed. If not, go over [here](https://cla.opensource.microsoft.com/microsoft/Terminal) and sign the CLA
* [x] Tests added/passed
* [ ] Documentation updated. If checked, please file a pull request on [our docs repo](https://github.com/MicrosoftDocs/terminal) and link it here: #xxx
* [ ] Schema updated.
* [x] 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

## Detailed Description of the Pull Request / Additional comments

`til::spsc::details::arc<T>` contains most of the queue's logic and as such has the relevant documentation for its design.

## Validation Steps Performed

The queue was tested on Windows, Linux and macOS using MSVC, gcc and llvm and each of their available runtime introspection utilities in order to ensure no race conditions or memory leaks occur.
2020-07-16 20:49:06 +00:00
Dustin L. Howett 09471c3753
Replace gsl::at with a new til::at(span) for pre-checked bounds (#6925)
The recent changes to use gsl::span everywhere added a few bounds checks
along codepaths where we were already checking bounds. Some of them may
be non-obvious to the optimizer, so we can now use til::at to help them
along.

To accomplish this, I've added a new overload of til::at that takes a
span and directly accesses its backing buffer.
2020-07-15 10:29:36 -07:00
Mike Griese aa1ed0a19c
Add support for the Command Palette (#6635)
## Summary of the Pull Request

![command-palette-001](https://user-images.githubusercontent.com/18356694/85313480-b6dbef00-b47d-11ea-8a8f-a802d26c2f9b.gif)


This adds a first iteration on the command palette. Notable missing features are:
* Commandline mode: This will be a follow-up PR, following the merge of #6537
* nested and iterable commands: These will additionally be a follow-up PR.

This is also additionally based off the addenda in #6532. 

This does not bind a key for the palette by default. That will be done when the above follow-ups are completed.

## References
* #2046 - The original command palette thread
* #5400 - This is the megathread for all command palette issues, which is tracking a bunch of additional follow up work 
* #5674 and #6532 - specs
* #6537 - related

## PR Checklist
* [x] Closes #2046
  - incidentally also closes #6645
* [x] I work here
* [x] Tests added/passed
* [ ] Requires documentation to be updated - delaying this until it's more polished.


## Detailed Description of the Pull Request / Additional comments

* There's a lot of code for autogenerating command names. That's all in `ActionArgs.cpp`, because each case is so _not_ boilerplate, unlike the rest of the code in `ActionArgs.h`.

## Validation Steps Performed

* I've been playing with this for months.
* Tests
* Selfhost with the team
2020-06-26 20:38:02 +00:00
Leonard Hecker 15f2535752
Improve bitmap::_calculateArea performance (#6572)
`bitmap::_calculateArea` performance can be improved by leveraging the
optimized `find_first`/`find_next` methods instead of iterating through
the bitmap manually.
2020-06-19 22:09:30 +00:00
greg904 c0ffc9b6dc
Clear cached runs after translate_y (#6501)
"While re-reading the code, I found out that I forgot to do clear cached runs
after translate_y in c360b7588ff8d389b49a4ed60cdee51401a5e172."
2020-06-14 00:17:26 -07:00
greg904 c360b7588f
Add fast path to til::bitmap::translate using bitshifts (#6493)
This commit adds a fast path to `til::bitmap::translate`: use bit shifts
when the delta is vertical.

Performance while printing the content of a big file, with the patch
from #6492 which hasn't been merged yet, in Release mode:

Before:
* translate represents 13.08% of samples in InvalidateScroll

After:
* translate represents  0.32% of samples in InvalidateScroll

## Validation

Tests passed.
2020-06-13 23:45:10 -07:00
Dustin L. Howett (MSFT) b46d393061
Switch the Cascadia projects to til::color where it's easily possible to do so (#5847)
This pull request moves swaths of Cascadia to use `til::color` for color
interop. There are still some places where we use `COLORREF`, such as in
the ABI boundaries between WinRT components.

I've also added two more til::color helpers - `with_alpha`, which takes
an existing color and sets its alpha component, and a
`Windows::UI::Color` convertor pair.

Future direction might include a `TerminalSettings::Color` type at the
idl boundary so we can finally stop using UInt32s (!) for color.

## Validation Steps Performed
Tested certain fragile areas:
* [x] setting the background with OSC 11
* [x] setting the background when acrylic is in use (which requires
  low-alpha)
2020-05-15 22:43:00 +00:00
Mike Griese 7612044363
Implement a pair of shims for cls, Clear-Host in conpty mode (#5627)
## Summary of the Pull Request

This PR implements a pair of shims for `cmd` and `powershell`, so that their `cls` and `Clear-Host` functions will clear the entire terminal buffer (like they do in conhost), instead of just the viewport. With the conpty viewport and buffer being the same size, there's effectively no way to know if an application is calling these API's in this way with the intention of clearing the buffer or the viewport. We absolutely have to guess. 

Each of these shims checks to see if the way that the API is being called exactly matches the way `cmd` or `powershell` would call these APIs. If it does, we manually write a `^[[3J` to the connected terminal, to get he Terminal to clear it's own scrollback.

~~_⚠️ If another application were trying to clear the **viewport** with an exactly similar API call, this would also cause the terminal scrollback to get cleared ⚠️_~~

* [x] Should these shims be restricted to when the process that's calling them is actually `cmd.exe` or `powershell.exe`? Can I even do this? I think we've done such a good job of isolating the client process information from the rest of the host code that I can't figure out how to do this.
  - YES, this can be done, and I did it.
* [ ] **TODO**: _While I'm here_, should I have `DoSrvPrivateEraseAll` (the implementation for `^[[2J`, in `getset.cpp`) also manually trigger a EraseAll in the terminal in conpty mode?

## PR Checklist
* [x] Closes #3126
* [x] Actually closes #1305 too, which is really the same thing, but probably deserves a callout
* [x] I work here
* [x] Tests added/passed
* [n/a] Requires documentation to be updated

## Validation Steps Performed
* ran tests
* checked `cls` in the Terminal
* checked `Clear-Host` in the Terminal
* Checked running `powershell clear-host` from `cmd.exe`
2020-04-30 21:53:31 +00:00
Michael Niksa 8ea9b327f3
Adjusts High DPI scaling to enable differential rendering (#5345)
## Summary of the Pull Request
- Adjusts scaling practices in `DxEngine` (and related scaling practices in `TerminalControl`) for pixel-perfect row baselines and spacing at High DPI such that differential row-by-row rendering can be applied at High DPI.

## References
- #5185 

## PR Checklist
* [x] Closes #5320, closes #3515, closes #1064
* [x] I work here.
* [x] Manually tested.
* [x] No doc.
* [x] Am core contributor. Also discussed with some of them already via Teams.

## Detailed Description of the Pull Request / Additional comments

**WAS:**
- We were using implicit DPI scaling on the `ID2D1RenderTarget` and running all of our processing in DIPs (Device-Independent Pixels). That's all well and good for getting things bootstrapped quickly, but it leaves the actual scaling of the draw commands up to the discretion of the rendering target.
- When we don't get to explicitly choose exactly how many pixels tall/wide and our X/Y placement perfectly, the nature of floating point multiplication and division required to do the presentation can cause us to drift off slightly out of our control depending on what the final display resolution actually is.
- Differential drawing cannot work unless we can know the exact integer pixels that need to be copied/moved/preserved/replaced between frames to give to the `IDXGISwapChain1::Present1` method. If things spill into fractional pixels or the sizes of rows/columns vary as they are rounded up and down implicitly, then we cannot do the differential rendering.

**NOW:**
- When deciding on a font, the `DxEngine` will take the scale factor into account and adjust the proposed height of the requested font. Then the remainder of the existing code that adjusts the baseline and integer-ifies each character cell will run naturally from there. That code already works correctly to align the height at normal DPI and scale out the font heights and advances to take an exact integer of pixels.
- `TermControl` has to use the scale now, in some places, and stop scaling in other places. This has to do with how the target's nature used to be implicit and is now explicit. For instance, determining where the cursor click hits must be scaled now. And determining the pixel size of the display canvas must no longer be scaled.
- `DxEngine` will no longer attempt to scale the invalid regions per my attempts in #5185 because the cell size is scaled. So it should work the same as at 96 DPI.
- The block is removed from the `DxEngine` that was causing a full invalidate on every frame at High DPI.
- A TODO was removed from `TermControl` that was invalidating everything when the DPI changed because the underlying renderer will already do that.

## Validation Steps Performed
* [x] Check at 150% DPI. Print text, scroll text down and up, do selection.
* [x] Check at 100% DPI. Print text, scroll text down and up, do selection.
* [x] Span two different DPI monitors and drag between them.
* [x] Giant pile of tests in https://github.com/microsoft/terminal/pull/5345#issuecomment-614127648

Co-authored-by: Dustin Howett <duhowett@microsoft.com>
Co-authored-by: Mike Griese <migrie@microsoft.com>
2020-04-22 14:59:51 -07:00
Michael Niksa 79684bf821
Render row-by-row instead of invalidating entire screen (#5185)
## Summary of the Pull Request
Adjusts DirectX renderer to use `til::bitmap` to track invalidation
regions. Uses special modification to invalidate a row-at-a-time to
ensure ligatures and NxM glyphs continue to work.

## References
Likely helps #1064

## PR Checklist
* [x] Closes #778
* [x] I work here.
* [x] Manual testing performed. See Performance traces in #778.
* [x] Automated tests for `til` changes.
* [x] Am core contributor. And discussed with @DHowett-MSFT.

## Detailed Description of the Pull Request / Additional comments
- Applies `til::bitmap` as the new invalidation scheme inside the
  DirectX renderer and updates all entrypoints for collecting
  invalidation data to coalesce into this structure.
- Semi-permanently routes all invalidations through a helper method
  `_InvalidateRectangle` that will expand any invalidation to cover the
  entire line. This ensures that ligatures and NxM glyphs will continue
  to render appropriately while still allowing us to dramatically reduce
  the number of lines drawn overall. In the future, we may come up with
  a tighter solution than line-by-line invalidation and can modify this
  helper method appropriately at that later date to further scope the
  invalid region.
- Ensures that the `experimental.retroTerminalEffects` feature continues
  to invalidate the entire display on start of frame as the shader is
  applied at the end of the frame composition and will stack on itself
  in an amusing fashion when we only redraw part of the display.
- Moves many member variables inside the DirectX renderer into the new
  `til::size`, `til::point`, and `til::rectangle` methods to facilitate
  easier management and mathematical operations. Consequently adds
  `try/catch` blocks around many of the already-existing `noexcept`
  methods to deal with mathematical or casting failures now detected by
  using the support classes.
- Corrects `TerminalCore` redraw triggers to appropriately communicate
  scrolling circumstances to the renderer so it can optimize the draw
  regions appropriately.
- Fixes an issue in the base `Renderer` that was causing overlapping
  scroll regions due to behavior of `Viewport::TrimToViewport` modifying
  the local. This fix is "good enough" for now and should go away when
  `Viewport` is fully migrated to `til::rectangle`.
- Adds multiplication and division operators to `til::rectangle` and
  supporting tests. These operates will help scale back and forth
  between a cell-based rectangle and a pixel-based rectangle. They take
  special care to ensure that a pixel rectangle being divided downward
  back to cells will expand (with the ceiling division methods) to cover
  a full cell when even one pixel inside the cell is touched (as is how
  a redraw would have to occur).
- Blocks off trace logging of invalid regions if no one is listening to
  optimize performance.
- Restores full usage of `IDXGISwapChain1::Present1` to accurately and
  fully communicate dirty and scroll regions to the underlying DirectX
  framework. This additional information allows the framework to
  optimize drawing between frames by eliminating data transfer of
  regions that aren't modified and shuffling frames in place. See
  [Remarks](https://docs.microsoft.com/en-us/windows/win32/api/dxgi1_2/nf-dxgi1_2-idxgiswapchain1-present1#remarks)
  for more details.
- Updates `til::bitmap` set methods to use more optimized versions of
  the setters on the `dynamic_bitset<>` that can bulk fill bits as the
  existing algorithm was noticeably slow after applying the
  "expand-to-row" helper to the DirectX renderer invalidation.
- All `til` import hierarchy is now handled in the parent `til.h` file
  and not in the child files to prevent circular imports from happening.
  We don't expect the import of any individual library file, only the
  base one. So this should be OK for now.

## Validation Steps Performed
- Ran `cmatrix`, `cmatrix -u0`, and `cacafire` after changes were made.
- Made a bunch of ligatures with `Cascadia Code` in the Terminal
  before/after the changes and confirmed they still ligate.
- Ran `dir` in Powershell and fixed the scrolling issues
- Clicked all over the place and dragged to make sure selection works.
- Checked retro terminal effect manually with Powershell.
2020-04-13 20:09:02 +00:00
Mike Griese a12a6285f5
Manually pass mouse wheel messages to TermControls (#5131)
## Summary of the Pull Request

As we've learned in #979, not all touchpads are created equal. Some of them have bad drivers that makes scrolling inactive windows not work. For whatever reason, these devices think the Terminal is all one giant inactive window, so we don't get the mouse wheel events through the XAML stack. We do however get the event as a `WM_MOUSEWHEEL` on those devices (a message we don't get on devices with normally functioning trackpads).

This PR attempts to take that `WM_MOUSEWHEEL` and manually dispatch it to the `TermControl`, so we can at least scroll the terminal content.

Unfortunately, this solution is not very general purpose. This only works to scroll controls that manually implement our own `IMouseWheelListener` interface. As we add more controls, we'll need to continue manually implementing this interface, until the underlying XAML Islands bug is fixed. **I don't love this**. I'd rather have a better solution, but it seems that we can't synthesize a more general-purpose `PointerWheeled` event that could get routed through the XAML tree as normal. 

## References

* #2606 and microsoft/microsoft-ui-xaml#2101 - these bugs are also tracking a similar "inactive windows" / "scaled mouse events" issue in XAML

## PR Checklist
* [x] Closes #979
* [x] I work here
* [ ] Tests added/passed
* [n/a] Requires documentation to be updated

## Detailed Description of the Pull Request / Additional comments

I've also added a `til::point` conversion _to_ `winrt::Windows::Foundation::Point`, and some scaling operators for `point`

## Validation Steps Performed

* It works on my HP Spectre 2017 with a synaptics trackpad
  - I also made sure to test that `tmux` works in panes on this laptop
* It works on my slaptop, and DOESN'T follow this hack codepath on this machine.
2020-04-01 16:58:16 +00:00
Dustin L. Howett (MSFT) dfc15780c7
add til::math, use it for float conversions to point, size (#5150)
This pull request introduces the `til::math` namespace, which provides some casting functions to be used in support of `til::point` and `til::size`. When point/size want to ingest a floating-point structure, they _must_ be instructed on how to convert those floating-point values into integers.

This enables:

```
Windows::Foundation::Point wfPoint = /* ... */;
til::point tp{ til::math::rounding, wfPoint };
```

Future thoughts: should the TilMath types be stackable? Right now, you cannot get "checked + rounding" behavior (where it throws if it doesn't fit) so everything is saturating.

## PR Checklist
* [x] Closes a request by Michael
* [x] I've discussed this with core contributors already
2020-03-27 22:48:49 +00:00
Michael Niksa ef80f665d3
Correct scrolling invalidation region for tmux in pty w/ bitmap (#5122)
Correct scrolling invalidation region for tmux in pty w/ bitmap

Add tracing for circling and scrolling operations. Fix improper
invalidation within AdjustCursorPosition routine in the subsection about
scrolling down at the bottom with a set of margins enabled.

## References
- Introduced with #5024 

## Detailed Description of the Pull Request / Additional comments
- This occurs when there is a scroll region restriction applied and a
  newline operation is performed to attempt to spin the contents of just
  the scroll region. This is a frequent behavior of tmux.
- Right now, the Terminal doesn't support any sort of "scroll content"
  operation, so what happens here generally speaking is that the PTY in
  the ConHost will repaint everything when this happens.
- The PTY when doing `AdjustCursorPosition` with a scroll region
  restriction would do the following things:

1. Slide literally everything in the direction it needed to go to take
   advantage of rotating the circular buffer. (This would force a
   repaint in PTY as the PTY always forces repaint when the buffer
   circles.)
2. Copy the lines that weren't supposed to move back to where they were
   supposed to go.
3. Backfill the "revealed" region that encompasses what was supposed to
   be the newline.

- The invalidations for the three operations above were:

1. Invalidate the number of rows of the delta at the top of the buffer
   (this part was wrong)
2. Invalidate the lines that got copied back into position (probably
   unnecessary, but OK)
3. Invalidate the revealed/filled-with-spaces line (this is good).

- When we were using a simple single rectangle for invalidation, the
  union of the top row of the buffer from 1 and the bottom row of the
  buffer from 2 (and 3 was irrelevant as it was already unioned it)
  resulted in repainting the entire buffer and all was good.

- When we switched to a bitmap, it dutifully only repainted the top line
  and the bottom two lines as the middle ones weren't a consequence of
  intersect.

- The logic was wrong. We shouldn't be invalidating rows-from-the-top
  for the amount of the delta. The 1 part should be invalidating
  everything BUT the lines that were invalidated in parts 2 and 3.
  (Arguably part 2 shouldn't be happening at all, but I'm not optimizing
  for that right now.)

- So this solves it by restoring an entire screen repaint for this sort
  of slide data operation by giving the correct number of invalidated
  lines to the bitmap.

## Validation Steps Performed
- Manual validation with the steps described in #5104
- Automatic test `ConptyRoundtripTests::ScrollWithMargins`.

Closes #5104
2020-03-27 22:37:23 +00:00