terminal/src/host/server.h

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/*++
Copyright (c) Microsoft Corporation
Licensed under the MIT license.
Module Name:
- server.h
Abstract:
- This module contains the internal structures and definitions used by the console server.
Author:
- Therese Stowell (ThereseS) 12-Nov-1990
Revision History:
--*/
#pragma once
#include "IIoProvider.hpp"
#include "settings.hpp"
#include "conimeinfo.h"
#include "VtIo.hpp"
#include "CursorBlinker.hpp"
#include "../server/ProcessList.h"
#include "../server/WaitQueue.h"
#include "../host/RenderData.hpp"
#include "../renderer/inc/BlinkingState.hpp"
// clang-format off
// Flags flags
#define CONSOLE_IS_ICONIC 0x00000001
#define CONSOLE_OUTPUT_SUSPENDED 0x00000002
#define CONSOLE_HAS_FOCUS 0x00000004
#define CONSOLE_IGNORE_NEXT_MOUSE_INPUT 0x00000008
#define CONSOLE_SELECTING 0x00000010
#define CONSOLE_SCROLLING 0x00000020
// unused (CONSOLE_DISABLE_CLOSE) 0x00000040
// unused (CONSOLE_USE_POLY_TEXT) 0x00000080
// Removed Oct 2017 - added a headless mode, which revealed that the consumption
// of this flag was redundant.
// unused (CONSOLE_NO_WINDOW) 0x00000100
// unused (CONSOLE_VDM_REGISTERED) 0x00000200
#define CONSOLE_UPDATING_SCROLL_BARS 0x00000400
#define CONSOLE_QUICK_EDIT_MODE 0x00000800
#define CONSOLE_CONNECTED_TO_EMULATOR 0x00002000
// unused (CONSOLE_FULLSCREEN_NOPAINT) 0x00004000
#define CONSOLE_QUIT_POSTED 0x00008000
#define CONSOLE_AUTO_POSITION 0x00010000
#define CONSOLE_IGNORE_NEXT_KEYUP 0x00020000
// unused (CONSOLE_WOW_REGISTERED) 0x00040000
#define CONSOLE_HISTORY_NODUP 0x00100000
#define CONSOLE_SCROLLBAR_TRACKING 0x00200000
#define CONSOLE_SETTING_WINDOW_SIZE 0x00800000
// unused (CONSOLE_VDM_HIDDEN_WINDOW) 0x01000000
// unused (CONSOLE_OS2_REGISTERED) 0x02000000
// unused (CONSOLE_OS2_OEM_FORMAT) 0x04000000
// unused (CONSOLE_JUST_VDM_UNREGISTERED) 0x08000000
// unused (CONSOLE_FULLSCREEN_INITIALIZED) 0x10000000
#define CONSOLE_USE_PRIVATE_FLAGS 0x20000000
// unused (CONSOLE_TSF_ACTIVATED) 0x40000000
#define CONSOLE_INITIALIZED 0x80000000
#define CONSOLE_SUSPENDED (CONSOLE_OUTPUT_SUSPENDED)
// clang-format on
class COOKED_READ_DATA;
class CommandHistory;
class CONSOLE_INFORMATION :
public Settings,
Improve the propagation of color attributes over ConPTY (#6506) This PR reimplements the VT rendering engines to do a better job of preserving the original color types when propagating attributes over ConPTY. For the 16-color renderers it provides better support for default colors and improves the efficiency of the color narrowing conversions. It also fixes problems with the ordering of character renditions that could result in attributes being dropped. Originally the base renderer would calculate the RGB color values and legacy/extended attributes up front, passing that data on to the active engine's `UpdateDrawingBrushes` method. With this new implementation, the renderer now just passes through the original `TextAttribute` along with an `IRenderData` interface, and leaves it to the engines to extract the information they need. The GDI and DirectX engines now have to lookup the RGB colors themselves (via simple `IRenderData` calls), but have no need for the other attributes. The VT engines extract the information that they need from the `TextAttribute`, instead of having to reverse engineer it from `COLORREF`s. The process for the 256-color Xterm engine starts with a check for default colors. If both foreground and background are default, it outputs a SGR 0 reset, and clears the `_lastTextAttribute` completely to make sure any reset state is reapplied. With that out the way, the foreground and background are updated (if changed) in one of 4 ways. They can either be a default value (SGR 39 and 49), a 16-color index (using ANSI or AIX sequences), a 256-color index, or a 24-bit RGB value (both using SGR 38 and 48 sequences). Then once the colors are accounted for, there is a separate step that handles the character rendition attributes (bold, italics, underline, etc.) This step must come _after_ the color sequences, in case a SGR reset is required, which would otherwise have cleared any character rendition attributes if it came last (which is what happened in the original implementation). The process for the 16-color engines is a little different. The target client in this case (Windows telnet) is incapable of setting default colors individually, so we need to output an SGR 0 reset if _either_ color has changed to default. With that out the way, we use the `TextColor::GetLegacyIndex` method to obtain an approximate 16-color index for each color, and apply the bold attribute by brightening the foreground index (setting bit 8) if the color type permits that. However, since Windows telnet only supports the 8 basic ANSI colors, the best we can do for bright colors is to output an SGR 1 attribute to get a bright foreground. There is nothing we can do about a bright background, so after that we just have to drop the high bit from the colors. If the resulting index values have changed from what they were before, we then output ANSI 8-color SGR sequences to update them. As with the 256-color engine, there is also a final step to handle the character rendition attributes. But in this case, the only supported attributes are underline and reversed video. Since the VT engines no longer depend on the active color table and default color values, there was quite a lot of code that could now be removed. This included the `IDefaultColorProvider` interface and implementations, the `Find(Nearest)TableIndex` functions, and also the associated HLS conversion and difference calculations. VALIDATION Other than simple API parameter changes, the majority of updates required in the unit tests were to correct assumptions about the way the colors should be rendered, which were the source of the narrowing bugs this PR was trying to fix. Like passing white on black to the `UpdateDrawingBrushes` API, and expecting it to output the default `SGR 0` sequence, or passing an RGB color and expecting an indexed SGR sequence. In addition to that, I've added some VT renderer tests to make sure the rendition attributes (bold, underline, etc) are correctly retained when a default color update causes an `SGR 0` sequence to be generated (the source of bug #3076). And I've extended the VT renderer color tests (both 256-color and 16-color) to make sure we're covering all of the different color types (default, RGB, and both forms of indexed colors). I've also tried to manually verify that all of the test cases in the linked bug reports (and their associated duplicates) are now fixed when this PR is applied. Closes #2661 Closes #3076 Closes #3717 Closes #5384 Closes #5864 This is only a partial fix for #293, but I suspect the remaining cases are unfixable.
2020-07-01 20:10:36 +02:00
public Microsoft::Console::IIoProvider
{
public:
CONSOLE_INFORMATION();
~CONSOLE_INFORMATION();
CONSOLE_INFORMATION(const CONSOLE_INFORMATION& c) = delete;
CONSOLE_INFORMATION& operator=(const CONSOLE_INFORMATION& c) = delete;
ConsoleProcessList ProcessHandleList;
InputBuffer* pInputBuffer;
SCREEN_INFORMATION* ScreenBuffers; // singly linked list
ConsoleWaitQueue OutputQueue;
DWORD Flags;
std::atomic<WORD> PopupCount;
// the following fields are used for ansi-unicode translation
UINT CP;
UINT OutputCP;
ULONG CtrlFlags; // indicates outstanding ctrl requests
ULONG LimitingProcessId;
CPINFO CPInfo;
CPINFO OutputCPInfo;
ConsoleImeInfo ConsoleIme;
void LockConsole();
bool TryLockConsole();
void UnlockConsole();
bool IsConsoleLocked() const;
ULONG GetCSRecursionCount();
Microsoft::Console::VirtualTerminal::VtIo* GetVtIo();
SCREEN_INFORMATION& GetActiveOutputBuffer() override;
const SCREEN_INFORMATION& GetActiveOutputBuffer() const override;
bool HasActiveOutputBuffer() const;
InputBuffer* const GetActiveInputBuffer() const;
bool IsInVtIoMode() const;
bool HasPendingCookedRead() const noexcept;
const COOKED_READ_DATA& CookedReadData() const noexcept;
COOKED_READ_DATA& CookedReadData() noexcept;
void SetCookedReadData(COOKED_READ_DATA* readData) noexcept;
Add support for the "blink" graphic rendition attribute (#7490) This PR adds support for the _blink_ graphic rendition attribute. When a character is output with this attribute set, it "blinks" at a regular interval, by cycling its color between the normal rendition and a dimmer shade of that color. The majority of the blinking mechanism is encapsulated in a new `BlinkingState` class, which is shared between the Terminal and Conhost implementations. This class keeps track of the position in the blinking cycle, which determines whether characters are rendered as normal or faint. In Windows Terminal, the state is stored in the `Terminal` class, and in Conhost it's stored in the `CONSOLE_INFORMATION` class. In both cases, the `IsBlinkingFaint` method is used to determine the current blinking rendition, and that is passed on as a parameter to the `TextAttribute::CalculateRgbColors` method when these classes are looking up attribute colors. Prior to calculating the colors, the current attribute is also passed to the `RecordBlinkingUsage` method, which keeps track of whether there are actually any blink attributes in use. This is used to determine whether the screen needs to be refreshed when the blinking cycle toggles between the normal and faint renditions. The refresh itself is handled by the `ToggleBlinkingRendition` method, which is triggered by a timer. In Conhost this is just piggybacking on the existing cursor blink timer, but in Windows Terminal it needs to have its own separate timer, since the cursor timer is reset whenever a key is pressed, which is not something we want for attribute blinking. Although the `ToggleBlinkingRendition` is called at the same rate as the cursor blinking, we actually only want the cells to blink at half that frequency. We thus have a counter that cycles through four phases, and blinking is rendered as faint for two of those four. Then every two cycles - when the state changes - a redraw is triggered, but only if there are actually blinking attributes in use (as previously recorded). As mentioned earlier, the blinking frequency is based on the cursor blink rate, so that means it'll automatically be disabled if a user has set their cursor blink rate to none. It can also be disabled by turning off the _Show animations in Windows_ option. In Conhost these settings take effect immediately, but in Windows Terminal they only apply when a new tab is opened. This PR also adds partial support for the `SGR 6` _rapid blink_ attribute. This is not used by DEC terminals, but was defined in the ECMA/ANSI standards. It's not widely supported, but many terminals just it implement it as an alias for the regular `SGR 5` blink attribute, so that's what I've done here too. ## Validation Steps Performed I've checked the _Graphic rendition test pattern_ in Vttest, and compared our representation of the blink attribute to that of an actual DEC VT220 terminal as seen on [YouTube]. With the right color scheme it's a reasonably close match. [YouTube]: https://www.youtube.com/watch?v=03Pz5AmxbE4&t=1m55s Closes #7388
2020-09-22 01:21:33 +02:00
std::pair<COLORREF, COLORREF> LookupAttributeColors(const TextAttribute& attr) const noexcept;
void SetTitle(const std::wstring_view newTitle);
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 21:52:33 +01:00
void SetTitlePrefix(const std::wstring_view newTitlePrefix);
void SetOriginalTitle(const std::wstring_view originalTitle);
void SetLinkTitle(const std::wstring_view linkTitle);
const std::wstring_view GetTitle() const noexcept;
const std::wstring_view GetOriginalTitle() const noexcept;
const std::wstring_view GetLinkTitle() const noexcept;
const std::wstring_view GetTitleAndPrefix() const;
[[nodiscard]] static NTSTATUS AllocateConsole(const std::wstring_view title);
// MSFT:16886775 : get rid of friends
friend void SetActiveScreenBuffer(_Inout_ SCREEN_INFORMATION& screenInfo);
friend class SCREEN_INFORMATION;
friend class CommonState;
Microsoft::Console::CursorBlinker& GetCursorBlinker() noexcept;
Add support for the "blink" graphic rendition attribute (#7490) This PR adds support for the _blink_ graphic rendition attribute. When a character is output with this attribute set, it "blinks" at a regular interval, by cycling its color between the normal rendition and a dimmer shade of that color. The majority of the blinking mechanism is encapsulated in a new `BlinkingState` class, which is shared between the Terminal and Conhost implementations. This class keeps track of the position in the blinking cycle, which determines whether characters are rendered as normal or faint. In Windows Terminal, the state is stored in the `Terminal` class, and in Conhost it's stored in the `CONSOLE_INFORMATION` class. In both cases, the `IsBlinkingFaint` method is used to determine the current blinking rendition, and that is passed on as a parameter to the `TextAttribute::CalculateRgbColors` method when these classes are looking up attribute colors. Prior to calculating the colors, the current attribute is also passed to the `RecordBlinkingUsage` method, which keeps track of whether there are actually any blink attributes in use. This is used to determine whether the screen needs to be refreshed when the blinking cycle toggles between the normal and faint renditions. The refresh itself is handled by the `ToggleBlinkingRendition` method, which is triggered by a timer. In Conhost this is just piggybacking on the existing cursor blink timer, but in Windows Terminal it needs to have its own separate timer, since the cursor timer is reset whenever a key is pressed, which is not something we want for attribute blinking. Although the `ToggleBlinkingRendition` is called at the same rate as the cursor blinking, we actually only want the cells to blink at half that frequency. We thus have a counter that cycles through four phases, and blinking is rendered as faint for two of those four. Then every two cycles - when the state changes - a redraw is triggered, but only if there are actually blinking attributes in use (as previously recorded). As mentioned earlier, the blinking frequency is based on the cursor blink rate, so that means it'll automatically be disabled if a user has set their cursor blink rate to none. It can also be disabled by turning off the _Show animations in Windows_ option. In Conhost these settings take effect immediately, but in Windows Terminal they only apply when a new tab is opened. This PR also adds partial support for the `SGR 6` _rapid blink_ attribute. This is not used by DEC terminals, but was defined in the ECMA/ANSI standards. It's not widely supported, but many terminals just it implement it as an alias for the regular `SGR 5` blink attribute, so that's what I've done here too. ## Validation Steps Performed I've checked the _Graphic rendition test pattern_ in Vttest, and compared our representation of the blink attribute to that of an actual DEC VT220 terminal as seen on [YouTube]. With the right color scheme it's a reasonably close match. [YouTube]: https://www.youtube.com/watch?v=03Pz5AmxbE4&t=1m55s Closes #7388
2020-09-22 01:21:33 +02:00
Microsoft::Console::Render::BlinkingState& GetBlinkingState() const noexcept;
CHAR_INFO AsCharInfo(const OutputCellView& cell) const noexcept;
RenderData renderData;
private:
CRITICAL_SECTION _csConsoleLock; // serialize input and output using this
std::wstring _Title;
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 21:52:33 +01:00
std::wstring _Prefix; // Eg Select, Mark - things that we manually prepend to the title.
std::wstring _TitleAndPrefix;
std::wstring _OriginalTitle;
std::wstring _LinkTitle; // Path to .lnk file
SCREEN_INFORMATION* pCurrentScreenBuffer;
COOKED_READ_DATA* _cookedReadData; // non-ownership pointer
Microsoft::Console::VirtualTerminal::VtIo _vtIo;
Microsoft::Console::CursorBlinker _blinker;
Add support for the "blink" graphic rendition attribute (#7490) This PR adds support for the _blink_ graphic rendition attribute. When a character is output with this attribute set, it "blinks" at a regular interval, by cycling its color between the normal rendition and a dimmer shade of that color. The majority of the blinking mechanism is encapsulated in a new `BlinkingState` class, which is shared between the Terminal and Conhost implementations. This class keeps track of the position in the blinking cycle, which determines whether characters are rendered as normal or faint. In Windows Terminal, the state is stored in the `Terminal` class, and in Conhost it's stored in the `CONSOLE_INFORMATION` class. In both cases, the `IsBlinkingFaint` method is used to determine the current blinking rendition, and that is passed on as a parameter to the `TextAttribute::CalculateRgbColors` method when these classes are looking up attribute colors. Prior to calculating the colors, the current attribute is also passed to the `RecordBlinkingUsage` method, which keeps track of whether there are actually any blink attributes in use. This is used to determine whether the screen needs to be refreshed when the blinking cycle toggles between the normal and faint renditions. The refresh itself is handled by the `ToggleBlinkingRendition` method, which is triggered by a timer. In Conhost this is just piggybacking on the existing cursor blink timer, but in Windows Terminal it needs to have its own separate timer, since the cursor timer is reset whenever a key is pressed, which is not something we want for attribute blinking. Although the `ToggleBlinkingRendition` is called at the same rate as the cursor blinking, we actually only want the cells to blink at half that frequency. We thus have a counter that cycles through four phases, and blinking is rendered as faint for two of those four. Then every two cycles - when the state changes - a redraw is triggered, but only if there are actually blinking attributes in use (as previously recorded). As mentioned earlier, the blinking frequency is based on the cursor blink rate, so that means it'll automatically be disabled if a user has set their cursor blink rate to none. It can also be disabled by turning off the _Show animations in Windows_ option. In Conhost these settings take effect immediately, but in Windows Terminal they only apply when a new tab is opened. This PR also adds partial support for the `SGR 6` _rapid blink_ attribute. This is not used by DEC terminals, but was defined in the ECMA/ANSI standards. It's not widely supported, but many terminals just it implement it as an alias for the regular `SGR 5` blink attribute, so that's what I've done here too. ## Validation Steps Performed I've checked the _Graphic rendition test pattern_ in Vttest, and compared our representation of the blink attribute to that of an actual DEC VT220 terminal as seen on [YouTube]. With the right color scheme it's a reasonably close match. [YouTube]: https://www.youtube.com/watch?v=03Pz5AmxbE4&t=1m55s Closes #7388
2020-09-22 01:21:33 +02:00
mutable Microsoft::Console::Render::BlinkingState _blinkingState;
};
#define ConsoleLocked() (ServiceLocator::LocateGlobals()->getConsoleInformation()->ConsoleLock.OwningThread == NtCurrentTeb()->ClientId.UniqueThread)
#define CONSOLE_STATUS_WAIT 0xC0030001
#define CONSOLE_STATUS_READ_COMPLETE 0xC0030002
#define CONSOLE_STATUS_WAIT_NO_BLOCK 0xC0030003
#include "../server/ObjectHandle.h"
void SetActiveScreenBuffer(SCREEN_INFORMATION& screenInfo);