Files
terminal/src/cascadia/TerminalControl/ControlCore.cpp
Leonard Hecker a01500f051 Rewrite ROW to be Unicode capable (#13626)
This commit is a from-scratch rewrite of `ROW` with the primary goal to get
rid of the rather bodgy `UnicodeStorage` class and improve Unicode support.

Previously a 120x9001 terminal buffer would store a vector of 9001 `ROW`s
where each `ROW` stored exactly 120 `wchar_t`. Glyphs exceeding their
allocated space would be stored in the `UnicodeStorage` which was basically
a `hashmap<Coordinate, String>`. Iterating over the text in a `ROW` would
require us to check each glyph and fetch it from the map conditionally.
On newlines we'd have to invalidate all map entries that are now gone,
so for every invalidated `ROW` we'd iterate through all glyphs again and if
a single one was stored in `UnicodeStorage`, we'd then iterate through the
entire hashmap to remove all coordinates that were residing on that `ROW`.
All in all, this wasn't the most robust nor performant code.

The new implementation is simple (from a design perspective):
Store all text in a `ROW` in a regular string. Grow the string if needed.
The association between columns and text works by storing character offsets
in a column-wide array. This algorithm is <100 LOC and removes ~1000.

As an aside this PR does a few more things that go hand in hand:
* Remove most of `ROW` helper classes, which aren't needed anymore.
* Allocate backing memory in a single `VirtualAlloc` call.
* Rewrite `IsCursorDoubleWidth` to use `DbcsAttrAt` directly.
  Improves overall performance by 10-20% and makes this implementation
  faster than the previous NxM storage, despite the added complexity.

Part of #8000

## Validation Steps Performed
* Existing and new unit and feature tests complete 
* Printing Unicode completes without crashing 
* Resizing works without crashing 
2022-11-11 20:34:58 +01:00

2158 lines
85 KiB
C++

// Copyright (c) Microsoft Corporation.
// Licensed under the MIT license.
#include "pch.h"
#include "ControlCore.h"
// MidiAudio
#include <mmeapi.h>
#include <dsound.h>
#include <DefaultSettings.h>
#include <unicode.hpp>
#include <Utf16Parser.hpp>
#include <WinUser.h>
#include <LibraryResources.h>
#include "EventArgs.h"
#include "../../types/inc/GlyphWidth.hpp"
#include "../../buffer/out/search.h"
#include "../../renderer/atlas/AtlasEngine.h"
#include "../../renderer/dx/DxRenderer.hpp"
#include "ControlCore.g.cpp"
#include "SelectionColor.g.cpp"
using namespace ::Microsoft::Console::Types;
using namespace ::Microsoft::Console::VirtualTerminal;
using namespace ::Microsoft::Terminal::Core;
using namespace winrt::Windows::Graphics::Display;
using namespace winrt::Windows::System;
using namespace winrt::Windows::ApplicationModel::DataTransfer;
// The minimum delay between updates to the scroll bar's values.
// The updates are throttled to limit power usage.
constexpr const auto ScrollBarUpdateInterval = std::chrono::milliseconds(8);
// The minimum delay between updating the TSF input control.
constexpr const auto TsfRedrawInterval = std::chrono::milliseconds(100);
// The minimum delay between updating the locations of regex patterns
constexpr const auto UpdatePatternLocationsInterval = std::chrono::milliseconds(500);
namespace winrt::Microsoft::Terminal::Control::implementation
{
static winrt::Microsoft::Terminal::Core::OptionalColor OptionalFromColor(const til::color& c)
{
Core::OptionalColor result;
result.Color = c;
result.HasValue = true;
return result;
}
static winrt::Microsoft::Terminal::Core::OptionalColor OptionalFromColor(const std::optional<til::color>& c)
{
Core::OptionalColor result;
if (c.has_value())
{
result.Color = *c;
result.HasValue = true;
}
else
{
result.HasValue = false;
}
return result;
}
// Helper static function to ensure that all ambiguous-width glyphs are reported as narrow.
// See microsoft/terminal#2066 for more info.
static bool _IsGlyphWideForceNarrowFallback(const std::wstring_view /* glyph */)
{
return false; // glyph is not wide.
}
static bool _EnsureStaticInitialization()
{
// use C++11 magic statics to make sure we only do this once.
static auto initialized = []() {
// *** THIS IS A SINGLETON ***
SetGlyphWidthFallback(_IsGlyphWideForceNarrowFallback);
return true;
}();
return initialized;
}
TextColor SelectionColor::AsTextColor() const noexcept
{
if (_IsIndex16)
{
return { _Color.r, false };
}
else
{
return { static_cast<COLORREF>(_Color) };
}
}
ControlCore::ControlCore(Control::IControlSettings settings,
Control::IControlAppearance unfocusedAppearance,
TerminalConnection::ITerminalConnection connection) :
_connection{ connection },
_desiredFont{ DEFAULT_FONT_FACE, 0, DEFAULT_FONT_WEIGHT, DEFAULT_FONT_SIZE, CP_UTF8 },
_actualFont{ DEFAULT_FONT_FACE, 0, DEFAULT_FONT_WEIGHT, { 0, DEFAULT_FONT_SIZE }, CP_UTF8, false }
{
_EnsureStaticInitialization();
_settings = winrt::make_self<implementation::ControlSettings>(settings, unfocusedAppearance);
_terminal = std::make_shared<::Microsoft::Terminal::Core::Terminal>();
// Subscribe to the connection's disconnected event and call our connection closed handlers.
_connectionStateChangedRevoker = _connection.StateChanged(winrt::auto_revoke, [this](auto&& /*s*/, auto&& /*v*/) {
_ConnectionStateChangedHandlers(*this, nullptr);
});
// This event is explicitly revoked in the destructor: does not need weak_ref
_connectionOutputEventToken = _connection.TerminalOutput({ this, &ControlCore::_connectionOutputHandler });
_terminal->SetWriteInputCallback([this](std::wstring_view wstr) {
_sendInputToConnection(wstr);
});
// GH#8969: pre-seed working directory to prevent potential races
_terminal->SetWorkingDirectory(_settings->StartingDirectory());
auto pfnCopyToClipboard = std::bind(&ControlCore::_terminalCopyToClipboard, this, std::placeholders::_1);
_terminal->SetCopyToClipboardCallback(pfnCopyToClipboard);
auto pfnWarningBell = std::bind(&ControlCore::_terminalWarningBell, this);
_terminal->SetWarningBellCallback(pfnWarningBell);
auto pfnTitleChanged = std::bind(&ControlCore::_terminalTitleChanged, this, std::placeholders::_1);
_terminal->SetTitleChangedCallback(pfnTitleChanged);
auto pfnScrollPositionChanged = std::bind(&ControlCore::_terminalScrollPositionChanged, this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3);
_terminal->SetScrollPositionChangedCallback(pfnScrollPositionChanged);
auto pfnTerminalCursorPositionChanged = std::bind(&ControlCore::_terminalCursorPositionChanged, this);
_terminal->SetCursorPositionChangedCallback(pfnTerminalCursorPositionChanged);
auto pfnTerminalTaskbarProgressChanged = std::bind(&ControlCore::_terminalTaskbarProgressChanged, this);
_terminal->TaskbarProgressChangedCallback(pfnTerminalTaskbarProgressChanged);
auto pfnShowWindowChanged = std::bind(&ControlCore::_terminalShowWindowChanged, this, std::placeholders::_1);
_terminal->SetShowWindowCallback(pfnShowWindowChanged);
auto pfnPlayMidiNote = std::bind(&ControlCore::_terminalPlayMidiNote, this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3);
_terminal->SetPlayMidiNoteCallback(pfnPlayMidiNote);
// MSFT 33353327: Initialize the renderer in the ctor instead of Initialize().
// We need the renderer to be ready to accept new engines before the SwapChainPanel is ready to go.
// If we wait, a screen reader may try to get the AutomationPeer (aka the UIA Engine), and we won't be able to attach
// the UIA Engine to the renderer. This prevents us from signaling changes to the cursor or buffer.
{
// First create the render thread.
// Then stash a local pointer to the render thread so we can initialize it and enable it
// to paint itself *after* we hand off its ownership to the renderer.
// We split up construction and initialization of the render thread object this way
// because the renderer and render thread have circular references to each other.
auto renderThread = std::make_unique<::Microsoft::Console::Render::RenderThread>();
auto* const localPointerToThread = renderThread.get();
// Now create the renderer and initialize the render thread.
const auto& renderSettings = _terminal->GetRenderSettings();
_renderer = std::make_unique<::Microsoft::Console::Render::Renderer>(renderSettings, _terminal.get(), nullptr, 0, std::move(renderThread));
_renderer->SetBackgroundColorChangedCallback([this]() { _rendererBackgroundColorChanged(); });
_renderer->SetFrameColorChangedCallback([this]() { _rendererTabColorChanged(); });
_renderer->SetRendererEnteredErrorStateCallback([weakThis = get_weak()]() {
if (auto strongThis{ weakThis.get() })
{
strongThis->_RendererEnteredErrorStateHandlers(*strongThis, nullptr);
}
});
THROW_IF_FAILED(localPointerToThread->Initialize(_renderer.get()));
}
// Get our dispatcher. If we're hosted in-proc with XAML, this will get
// us the same dispatcher as TermControl::Dispatcher(). If we're out of
// proc, this'll return null. We'll need to instead make a new
// DispatcherQueue (on a new thread), so we can use that for throttled
// functions.
_dispatcher = winrt::Windows::System::DispatcherQueue::GetForCurrentThread();
if (!_dispatcher)
{
auto controller{ winrt::Windows::System::DispatcherQueueController::CreateOnDedicatedThread() };
_dispatcher = controller.DispatcherQueue();
}
// A few different events should be throttled, so they don't fire absolutely all the time:
// * _tsfTryRedrawCanvas: When the cursor position moves, we need to
// inform TSF, so it can move the canvas for the composition. We
// throttle this so that we're not hopping across the process boundary
// every time that the cursor moves.
// * _updatePatternLocations: When there's new output, or we scroll the
// viewport, we should re-check if there are any visible hyperlinks.
// But we don't really need to do this every single time text is
// output, we can limit this update to once every 500ms.
// * _updateScrollBar: Same idea as the TSF update - we don't _really_
// need to hop across the process boundary every time text is output.
// We can throttle this to once every 8ms, which will get us out of
// the way of the main output & rendering threads.
_tsfTryRedrawCanvas = std::make_shared<ThrottledFuncTrailing<>>(
_dispatcher,
TsfRedrawInterval,
[weakThis = get_weak()]() {
if (auto core{ weakThis.get() }; !core->_IsClosing())
{
core->_CursorPositionChangedHandlers(*core, nullptr);
}
});
// NOTE: Calling UpdatePatternLocations from a background
// thread is a workaround for us to hit GH#12607 less often.
_updatePatternLocations = std::make_unique<til::throttled_func_trailing<>>(
UpdatePatternLocationsInterval,
[weakTerminal = std::weak_ptr{ _terminal }]() {
if (const auto t = weakTerminal.lock())
{
auto lock = t->LockForWriting();
t->UpdatePatternsUnderLock();
}
});
_updateScrollBar = std::make_shared<ThrottledFuncTrailing<Control::ScrollPositionChangedArgs>>(
_dispatcher,
ScrollBarUpdateInterval,
[weakThis = get_weak()](const auto& update) {
if (auto core{ weakThis.get() }; !core->_IsClosing())
{
core->_ScrollPositionChangedHandlers(*core, update);
}
});
UpdateSettings(settings, unfocusedAppearance);
}
ControlCore::~ControlCore()
{
Close();
if (_renderer)
{
_renderer->TriggerTeardown();
}
}
bool ControlCore::Initialize(const double actualWidth,
const double actualHeight,
const double compositionScale)
{
assert(_settings);
_panelWidth = actualWidth;
_panelHeight = actualHeight;
_compositionScale = compositionScale;
{ // scope for terminalLock
auto terminalLock = _terminal->LockForWriting();
if (_initializedTerminal)
{
return false;
}
const auto windowWidth = actualWidth * compositionScale;
const auto windowHeight = actualHeight * compositionScale;
if (windowWidth == 0 || windowHeight == 0)
{
return false;
}
if (_settings->UseAtlasEngine())
{
_renderEngine = std::make_unique<::Microsoft::Console::Render::AtlasEngine>();
}
else
{
_renderEngine = std::make_unique<::Microsoft::Console::Render::DxEngine>();
}
_renderer->AddRenderEngine(_renderEngine.get());
// Initialize our font with the renderer
// We don't have to care about DPI. We'll get a change message immediately if it's not 96
// and react accordingly.
_updateFont(true);
const til::size windowSize{ static_cast<til::CoordType>(windowWidth),
static_cast<til::CoordType>(windowHeight) };
// First set up the dx engine with the window size in pixels.
// Then, using the font, get the number of characters that can fit.
// Resize our terminal connection to match that size, and initialize the terminal with that size.
const auto viewInPixels = Viewport::FromDimensions({ 0, 0 }, windowSize);
LOG_IF_FAILED(_renderEngine->SetWindowSize({ viewInPixels.Width(), viewInPixels.Height() }));
// Update DxEngine's SelectionBackground
_renderEngine->SetSelectionBackground(til::color{ _settings->SelectionBackground() });
const auto vp = _renderEngine->GetViewportInCharacters(viewInPixels);
const auto width = vp.Width();
const auto height = vp.Height();
_connection.Resize(height, width);
if (_owningHwnd != 0)
{
if (auto conpty{ _connection.try_as<TerminalConnection::ConptyConnection>() })
{
conpty.ReparentWindow(_owningHwnd);
}
}
// Override the default width and height to match the size of the swapChainPanel
_settings->InitialCols(width);
_settings->InitialRows(height);
_terminal->CreateFromSettings(*_settings, *_renderer);
// IMPORTANT! Set this callback up sooner than later. If we do it
// after Enable, then it'll be possible to paint the frame once
// _before_ the warning handler is set up, and then warnings from
// the first paint will be ignored!
_renderEngine->SetWarningCallback(std::bind(&ControlCore::_rendererWarning, this, std::placeholders::_1));
// Tell the DX Engine to notify us when the swap chain changes.
// We do this after we initially set the swapchain so as to avoid unnecessary callbacks (and locking problems)
_renderEngine->SetCallback([this](auto handle) { _renderEngineSwapChainChanged(handle); });
_renderEngine->SetRetroTerminalEffect(_settings->RetroTerminalEffect());
_renderEngine->SetPixelShaderPath(_settings->PixelShaderPath());
_renderEngine->SetForceFullRepaintRendering(_settings->ForceFullRepaintRendering());
_renderEngine->SetSoftwareRendering(_settings->SoftwareRendering());
_updateAntiAliasingMode();
// GH#5098: Inform the engine of the opacity of the default text background.
// GH#11315: Always do this, even if they don't have acrylic on.
_renderEngine->EnableTransparentBackground(_isBackgroundTransparent());
THROW_IF_FAILED(_renderEngine->Enable());
_initializedTerminal = true;
} // scope for TerminalLock
// Start the connection outside of lock, because it could
// start writing output immediately.
_connection.Start();
return true;
}
// Method Description:
// - Tell the renderer to start painting.
// - !! IMPORTANT !! Make sure that we've attached our swap chain to an
// actual target before calling this.
// Arguments:
// - <none>
// Return Value:
// - <none>
void ControlCore::EnablePainting()
{
if (_initializedTerminal)
{
_renderer->EnablePainting();
}
}
// Method Description:
// - Writes the given sequence as input to the active terminal connection.
// - This method has been overloaded to allow zero-copy winrt::param::hstring optimizations.
// Arguments:
// - wstr: the string of characters to write to the terminal connection.
// Return Value:
// - <none>
void ControlCore::_sendInputToConnection(std::wstring_view wstr)
{
if (_isReadOnly)
{
_raiseReadOnlyWarning();
}
else
{
_connection.WriteInput(wstr);
}
}
// Method Description:
// - Writes the given sequence as input to the active terminal connection,
// Arguments:
// - wstr: the string of characters to write to the terminal connection.
// Return Value:
// - <none>
void ControlCore::SendInput(const winrt::hstring& wstr)
{
_sendInputToConnection(wstr);
}
bool ControlCore::SendCharEvent(const wchar_t ch,
const WORD scanCode,
const ::Microsoft::Terminal::Core::ControlKeyStates modifiers)
{
if (ch == L'\x3') // Ctrl+C or Ctrl+Break
{
_handleControlC();
}
return _terminal->SendCharEvent(ch, scanCode, modifiers);
}
void ControlCore::_handleControlC()
{
if (!_midiAudioSkipTimer)
{
_midiAudioSkipTimer = _dispatcher.CreateTimer();
_midiAudioSkipTimer.Interval(std::chrono::seconds(1));
_midiAudioSkipTimer.IsRepeating(false);
_midiAudioSkipTimer.Tick([weakSelf = get_weak()](auto&&, auto&&) {
if (const auto self = weakSelf.get())
{
self->_midiAudio.EndSkip();
}
});
}
_midiAudio.BeginSkip();
_midiAudioSkipTimer.Start();
}
bool ControlCore::_shouldTryUpdateSelection(const WORD vkey)
{
// GH#6423 - don't update selection if the key that was pressed was a
// modifier key. We'll wait for a real keystroke to dismiss the
// GH #7395 - don't update selection when taking PrintScreen
// selection.
return HasSelection() && !KeyEvent::IsModifierKey(vkey) && vkey != VK_SNAPSHOT;
}
bool ControlCore::TryMarkModeKeybinding(const WORD vkey,
const ::Microsoft::Terminal::Core::ControlKeyStates mods)
{
if (_shouldTryUpdateSelection(vkey) && _terminal->SelectionMode() == ::Terminal::SelectionInteractionMode::Mark)
{
if (vkey == 'A' && !mods.IsAltPressed() && !mods.IsShiftPressed() && mods.IsCtrlPressed())
{
// Ctrl + A --> Select all
auto lock = _terminal->LockForWriting();
_terminal->SelectAll();
_updateSelectionUI();
return true;
}
else if (vkey == VK_TAB && !mods.IsAltPressed() && !mods.IsCtrlPressed() && _settings->DetectURLs())
{
// [Shift +] Tab --> next/previous hyperlink
auto lock = _terminal->LockForWriting();
const auto direction = mods.IsShiftPressed() ? ::Terminal::SearchDirection::Backward : ::Terminal::SearchDirection::Forward;
_terminal->SelectHyperlink(direction);
_updateSelectionUI();
return true;
}
else if (vkey == VK_RETURN && mods.IsCtrlPressed() && !mods.IsAltPressed() && !mods.IsShiftPressed())
{
// Ctrl + Enter --> Open URL
auto lock = _terminal->LockForReading();
if (const auto uri = _terminal->GetHyperlinkAtBufferPosition(_terminal->GetSelectionAnchor()); !uri.empty())
{
_OpenHyperlinkHandlers(*this, winrt::make<OpenHyperlinkEventArgs>(winrt::hstring{ uri }));
}
else
{
const auto selectedText = _terminal->GetTextBuffer().GetPlainText(_terminal->GetSelectionAnchor(), _terminal->GetSelectionEnd());
_OpenHyperlinkHandlers(*this, winrt::make<OpenHyperlinkEventArgs>(winrt::hstring{ selectedText }));
}
return true;
}
else if (vkey == VK_RETURN && !mods.IsCtrlPressed() && !mods.IsAltPressed())
{
// [Shift +] Enter --> copy text
// Don't lock here! CopySelectionToClipboard already locks for you!
CopySelectionToClipboard(mods.IsShiftPressed(), nullptr);
_terminal->ClearSelection();
_updateSelectionUI();
return true;
}
else if (vkey == VK_ESCAPE)
{
_terminal->ClearSelection();
_updateSelectionUI();
return true;
}
else if (const auto updateSlnParams{ _terminal->ConvertKeyEventToUpdateSelectionParams(mods, vkey) })
{
// try to update the selection
auto lock = _terminal->LockForWriting();
_terminal->UpdateSelection(updateSlnParams->first, updateSlnParams->second, mods);
_updateSelectionUI();
return true;
}
}
return false;
}
// Method Description:
// - Send this particular key event to the terminal.
// See Terminal::SendKeyEvent for more information.
// - Clears the current selection.
// - Makes the cursor briefly visible during typing.
// Arguments:
// - vkey: The vkey of the key pressed.
// - scanCode: The scan code of the key pressed.
// - modifiers: The Microsoft::Terminal::Core::ControlKeyStates representing the modifier key states.
// - keyDown: If true, the key was pressed, otherwise the key was released.
bool ControlCore::TrySendKeyEvent(const WORD vkey,
const WORD scanCode,
const ControlKeyStates modifiers,
const bool keyDown)
{
// Update the selection, if it's present
// GH#8522, GH#3758 - Only modify the selection on key _down_. If we
// modify on key up, then there's chance that we'll immediately dismiss
// a selection created by an action bound to a keydown.
if (_shouldTryUpdateSelection(vkey) && keyDown)
{
// try to update the selection
if (const auto updateSlnParams{ _terminal->ConvertKeyEventToUpdateSelectionParams(modifiers, vkey) })
{
auto lock = _terminal->LockForWriting();
_terminal->UpdateSelection(updateSlnParams->first, updateSlnParams->second, modifiers);
_updateSelectionUI();
return true;
}
// GH#8791 - don't dismiss selection if Windows key was also pressed as a key-combination.
if (!modifiers.IsWinPressed())
{
_terminal->ClearSelection();
_updateSelectionUI();
}
// When there is a selection active, escape should clear it and NOT flow through
// to the terminal. With any other keypress, it should clear the selection AND
// flow through to the terminal.
if (vkey == VK_ESCAPE)
{
return true;
}
}
// If the terminal translated the key, mark the event as handled.
// This will prevent the system from trying to get the character out
// of it and sending us a CharacterReceived event.
return vkey ? _terminal->SendKeyEvent(vkey,
scanCode,
modifiers,
keyDown) :
true;
}
bool ControlCore::SendMouseEvent(const til::point viewportPos,
const unsigned int uiButton,
const ControlKeyStates states,
const short wheelDelta,
const TerminalInput::MouseButtonState state)
{
return _terminal->SendMouseEvent(viewportPos, uiButton, states, wheelDelta, state);
}
void ControlCore::UserScrollViewport(const int viewTop)
{
// Clear the regex pattern tree so the renderer does not try to render them while scrolling
_terminal->ClearPatternTree();
// This is a scroll event that wasn't initiated by the terminal
// itself - it was initiated by the mouse wheel, or the scrollbar.
_terminal->UserScrollViewport(viewTop);
(*_updatePatternLocations)();
}
void ControlCore::AdjustOpacity(const double adjustment)
{
if (adjustment == 0)
{
return;
}
_setOpacity(Opacity() + adjustment);
}
void ControlCore::_setOpacity(const double opacity)
{
const auto newOpacity = std::clamp(opacity,
0.0,
1.0);
if (newOpacity == Opacity())
{
return;
}
// Update our runtime opacity value
_runtimeOpacity = newOpacity;
// GH#11285 - If the user is on Windows 10, and they changed the
// transparency of the control s.t. it should be partially opaque, then
// opt them in to acrylic. It's the only way to have transparency on
// Windows 10.
// We'll also turn the acrylic back off when they're fully opaque, which
// is what the Terminal did prior to 1.12.
_runtimeUseAcrylic = newOpacity < 1.0 && (!IsVintageOpacityAvailable() || _settings->UseAcrylic());
// Update the renderer as well. It might need to fall back from
// cleartype -> grayscale if the BG is transparent / acrylic.
if (_renderEngine)
{
_renderEngine->EnableTransparentBackground(_isBackgroundTransparent());
_renderer->NotifyPaintFrame();
}
auto eventArgs = winrt::make_self<TransparencyChangedEventArgs>(newOpacity);
_TransparencyChangedHandlers(*this, *eventArgs);
}
void ControlCore::ToggleShaderEffects()
{
const auto path = _settings->PixelShaderPath();
auto lock = _terminal->LockForWriting();
// Originally, this action could be used to enable the retro effects
// even when they're set to `false` in the settings. If the user didn't
// specify a custom pixel shader, manually enable the legacy retro
// effect first. This will ensure that a toggle off->on will still work,
// even if they currently have retro effect off.
if (path.empty())
{
_renderEngine->SetRetroTerminalEffect(!_renderEngine->GetRetroTerminalEffect());
}
else
{
_renderEngine->SetPixelShaderPath(_renderEngine->GetPixelShaderPath().empty() ? std::wstring_view{ path } : std::wstring_view{});
}
// Always redraw after toggling effects. This way even if the control
// does not have focus it will update immediately.
_renderer->TriggerRedrawAll();
}
// Method description:
// - Updates last hovered cell, renders / removes rendering of hyper-link if required
// Arguments:
// - terminalPosition: The terminal position of the pointer
void ControlCore::SetHoveredCell(Core::Point pos)
{
_updateHoveredCell(std::optional<til::point>{ pos });
}
void ControlCore::ClearHoveredCell()
{
_updateHoveredCell(std::nullopt);
}
void ControlCore::_updateHoveredCell(const std::optional<til::point> terminalPosition)
{
if (terminalPosition == _lastHoveredCell)
{
return;
}
// GH#9618 - lock while we're reading from the terminal, and if we need
// to update something, then lock again to write the terminal.
_lastHoveredCell = terminalPosition;
uint16_t newId{ 0u };
// we can't use auto here because we're pre-declaring newInterval.
decltype(_terminal->GetHyperlinkIntervalFromViewportPosition({})) newInterval{ std::nullopt };
if (terminalPosition.has_value())
{
auto lock = _terminal->LockForReading(); // Lock for the duration of our reads.
newId = _terminal->GetHyperlinkIdAtViewportPosition(*terminalPosition);
newInterval = _terminal->GetHyperlinkIntervalFromViewportPosition(*terminalPosition);
}
// If the hyperlink ID changed or the interval changed, trigger a redraw all
// (so this will happen both when we move onto a link and when we move off a link)
if (newId != _lastHoveredId ||
(newInterval != _lastHoveredInterval))
{
// Introduce scope for lock - we don't want to raise the
// HoveredHyperlinkChanged event under lock, because then handlers
// wouldn't be able to ask us about the hyperlink text/position
// without deadlocking us.
{
auto lock = _terminal->LockForWriting();
_lastHoveredId = newId;
_lastHoveredInterval = newInterval;
_renderEngine->UpdateHyperlinkHoveredId(newId);
_renderer->UpdateLastHoveredInterval(newInterval);
_renderer->TriggerRedrawAll();
}
_HoveredHyperlinkChangedHandlers(*this, nullptr);
}
}
winrt::hstring ControlCore::GetHyperlink(const Core::Point pos) const
{
// Lock for the duration of our reads.
auto lock = _terminal->LockForReading();
return winrt::hstring{ _terminal->GetHyperlinkAtViewportPosition(til::point{ pos }) };
}
winrt::hstring ControlCore::HoveredUriText() const
{
auto lock = _terminal->LockForReading(); // Lock for the duration of our reads.
if (_lastHoveredCell.has_value())
{
auto uri{ _terminal->GetHyperlinkAtViewportPosition(*_lastHoveredCell) };
uri.resize(std::min<size_t>(1024u, uri.size())); // Truncate for display
return winrt::hstring{ uri };
}
return {};
}
Windows::Foundation::IReference<Core::Point> ControlCore::HoveredCell() const
{
return _lastHoveredCell.has_value() ? Windows::Foundation::IReference<Core::Point>{ _lastHoveredCell.value().to_core_point() } : nullptr;
}
// Method Description:
// - Updates the settings of the current terminal.
// - INVARIANT: This method can only be called if the caller DOES NOT HAVE writing lock on the terminal.
void ControlCore::UpdateSettings(const IControlSettings& settings, const IControlAppearance& newAppearance)
{
_settings = winrt::make_self<implementation::ControlSettings>(settings, newAppearance);
auto lock = _terminal->LockForWriting();
// GH#11285 - If the user is on Windows 10, and they wanted opacity, but
// didn't explicitly request acrylic, then opt them in to acrylic.
// On Windows 11+, this isn't needed, because we can have vintage opacity.
// Instead, disable acrylic while the opacity is 100%
_runtimeUseAcrylic = _settings->Opacity() < 1.0 && (!IsVintageOpacityAvailable() || _settings->UseAcrylic());
_runtimeOpacity = std::nullopt;
const auto sizeChanged = _setFontSizeUnderLock(_settings->FontSize());
// Update the terminal core with its new Core settings
_terminal->UpdateSettings(*_settings);
if (!_initializedTerminal)
{
// If we haven't initialized, there's no point in continuing.
// Initialization will handle the renderer settings.
return;
}
_renderEngine->SetForceFullRepaintRendering(_settings->ForceFullRepaintRendering());
_renderEngine->SetSoftwareRendering(_settings->SoftwareRendering());
// Inform the renderer of our opacity
_renderEngine->EnableTransparentBackground(_isBackgroundTransparent());
// Trigger a redraw to repaint the window background and tab colors.
_renderer->TriggerRedrawAll(true, true);
_updateAntiAliasingMode();
if (sizeChanged)
{
_refreshSizeUnderLock();
}
}
// Method Description:
// - Updates the appearance of the current terminal.
// - INVARIANT: This method can only be called if the caller DOES NOT HAVE writing lock on the terminal.
void ControlCore::ApplyAppearance(const bool& focused)
{
auto lock = _terminal->LockForWriting();
const auto& newAppearance{ focused ? _settings->FocusedAppearance() : _settings->UnfocusedAppearance() };
// Update the terminal core with its new Core settings
_terminal->UpdateAppearance(*newAppearance);
// Update DxEngine settings under the lock
if (_renderEngine)
{
// Update DxEngine settings under the lock
_renderEngine->SetSelectionBackground(til::color{ newAppearance->SelectionBackground() });
_renderEngine->SetRetroTerminalEffect(newAppearance->RetroTerminalEffect());
_renderEngine->SetPixelShaderPath(newAppearance->PixelShaderPath());
_renderer->TriggerRedrawAll();
}
}
void ControlCore::_updateAntiAliasingMode()
{
D2D1_TEXT_ANTIALIAS_MODE mode;
// Update DxEngine's AntialiasingMode
switch (_settings->AntialiasingMode())
{
case TextAntialiasingMode::Cleartype:
mode = D2D1_TEXT_ANTIALIAS_MODE_CLEARTYPE;
break;
case TextAntialiasingMode::Aliased:
mode = D2D1_TEXT_ANTIALIAS_MODE_ALIASED;
break;
default:
mode = D2D1_TEXT_ANTIALIAS_MODE_GRAYSCALE;
break;
}
_renderEngine->SetAntialiasingMode(mode);
}
// Method Description:
// - Update the font with the renderer. This will be called either when the
// font changes or the DPI changes, as DPI changes will necessitate a
// font change. This method will *not* change the buffer/viewport size
// to account for the new glyph dimensions. Callers should make sure to
// appropriately call _doResizeUnderLock after this method is called.
// - The write lock should be held when calling this method.
// Arguments:
// - initialUpdate: whether this font update should be considered as being
// concerned with initialization process. Value forwarded to event handler.
void ControlCore::_updateFont(const bool initialUpdate)
{
const auto newDpi = static_cast<int>(static_cast<double>(USER_DEFAULT_SCREEN_DPI) *
_compositionScale);
_terminal->SetFontInfo(_actualFont);
if (_renderEngine)
{
std::unordered_map<std::wstring_view, uint32_t> featureMap;
if (const auto fontFeatures = _settings->FontFeatures())
{
featureMap.reserve(fontFeatures.Size());
for (const auto& [tag, param] : fontFeatures)
{
featureMap.emplace(tag, param);
}
}
std::unordered_map<std::wstring_view, float> axesMap;
if (const auto fontAxes = _settings->FontAxes())
{
axesMap.reserve(fontAxes.Size());
for (const auto& [axis, value] : fontAxes)
{
axesMap.emplace(axis, value);
}
}
// TODO: MSFT:20895307 If the font doesn't exist, this doesn't
// actually fail. We need a way to gracefully fallback.
LOG_IF_FAILED(_renderEngine->UpdateDpi(newDpi));
LOG_IF_FAILED(_renderEngine->UpdateFont(_desiredFont, _actualFont, featureMap, axesMap));
}
// If the actual font isn't what was requested...
if (_actualFont.GetFaceName() != _desiredFont.GetFaceName())
{
// Then warn the user that we picked something because we couldn't find their font.
// Format message with user's choice of font and the font that was chosen instead.
const winrt::hstring message{ fmt::format(std::wstring_view{ RS_(L"NoticeFontNotFound") },
_desiredFont.GetFaceName(),
_actualFont.GetFaceName()) };
auto noticeArgs = winrt::make<NoticeEventArgs>(NoticeLevel::Warning, message);
_RaiseNoticeHandlers(*this, std::move(noticeArgs));
}
const auto actualNewSize = _actualFont.GetSize();
_FontSizeChangedHandlers(actualNewSize.X, actualNewSize.Y, initialUpdate);
}
// Method Description:
// - Set the font size of the terminal control.
// Arguments:
// - fontSize: The size of the font.
// Return Value:
// - Returns true if you need to call _refreshSizeUnderLock().
bool ControlCore::_setFontSizeUnderLock(float fontSize)
{
// Make sure we have a non-zero font size
const auto newSize = std::max(fontSize, 1.0f);
const auto fontFace = _settings->FontFace();
const auto fontWeight = _settings->FontWeight();
_desiredFont = { fontFace, 0, fontWeight.Weight, newSize, CP_UTF8 };
_actualFont = { fontFace, 0, fontWeight.Weight, _desiredFont.GetEngineSize(), CP_UTF8, false };
_actualFontFaceName = { fontFace };
const auto before = _actualFont.GetSize();
_updateFont();
const auto after = _actualFont.GetSize();
return before != after;
}
// Method Description:
// - Reset the font size of the terminal to its default size.
// Arguments:
// - none
void ControlCore::ResetFontSize()
{
const auto lock = _terminal->LockForWriting();
if (_setFontSizeUnderLock(_settings->FontSize()))
{
_refreshSizeUnderLock();
}
}
// Method Description:
// - Adjust the font size of the terminal control.
// Arguments:
// - fontSizeDelta: The amount to increase or decrease the font size by.
void ControlCore::AdjustFontSize(float fontSizeDelta)
{
const auto lock = _terminal->LockForWriting();
if (_setFontSizeUnderLock(_desiredFont.GetFontSize() + fontSizeDelta))
{
_refreshSizeUnderLock();
}
}
// Method Description:
// - Process a resize event that was initiated by the user. This can either
// be due to the user resizing the window (causing the swapchain to
// resize) or due to the DPI changing (causing us to need to resize the
// buffer to match)
// - Note that a DPI change will also trigger a font size change, and will
// call into here.
// - The write lock should be held when calling this method, we might be
// changing the buffer size in _refreshSizeUnderLock.
// Arguments:
// - <none>
// Return Value:
// - <none>
void ControlCore::_refreshSizeUnderLock()
{
if (_IsClosing())
{
return;
}
auto cx = gsl::narrow_cast<til::CoordType>(_panelWidth * _compositionScale);
auto cy = gsl::narrow_cast<til::CoordType>(_panelHeight * _compositionScale);
// Don't actually resize so small that a single character wouldn't fit
// in either dimension. The buffer really doesn't like being size 0.
cx = std::max(cx, _actualFont.GetSize().X);
cy = std::max(cy, _actualFont.GetSize().Y);
// Convert our new dimensions to characters
const auto viewInPixels = Viewport::FromDimensions({ 0, 0 }, { cx, cy });
const auto vp = _renderEngine->GetViewportInCharacters(viewInPixels);
const auto currentVP = _terminal->GetViewport();
_terminal->ClearSelection();
// Tell the dx engine that our window is now the new size.
THROW_IF_FAILED(_renderEngine->SetWindowSize({ cx, cy }));
// Invalidate everything
_renderer->TriggerRedrawAll();
// If this function succeeds with S_FALSE, then the terminal didn't
// actually change size. No need to notify the connection of this no-op.
const auto hr = _terminal->UserResize({ vp.Width(), vp.Height() });
if (SUCCEEDED(hr) && hr != S_FALSE)
{
_connection.Resize(vp.Height(), vp.Width());
}
}
void ControlCore::SizeChanged(const double width,
const double height)
{
// _refreshSizeUnderLock redraws the entire terminal.
// Don't call it if we don't have to.
if (_panelWidth == width && _panelHeight == height)
{
return;
}
_panelWidth = width;
_panelHeight = height;
auto lock = _terminal->LockForWriting();
_refreshSizeUnderLock();
}
void ControlCore::ScaleChanged(const double scale)
{
if (!_renderEngine)
{
return;
}
// _refreshSizeUnderLock redraws the entire terminal.
// Don't call it if we don't have to.
if (_compositionScale == scale)
{
return;
}
_compositionScale = scale;
auto lock = _terminal->LockForWriting();
// _updateFont relies on the new _compositionScale set above
_updateFont();
_refreshSizeUnderLock();
}
void ControlCore::SetSelectionAnchor(const til::point position)
{
auto lock = _terminal->LockForWriting();
_terminal->SetSelectionAnchor(position);
}
// Method Description:
// - Retrieves selection metadata from Terminal necessary to draw the
// selection markers.
// - Since all of this needs to be done under lock, it is more performant
// to throw it all in a struct and pass it along.
Control::SelectionData ControlCore::SelectionInfo() const
{
auto lock = _terminal->LockForReading();
Control::SelectionData info;
const auto start{ _terminal->SelectionStartForRendering() };
info.StartPos = { start.X, start.Y };
const auto end{ _terminal->SelectionEndForRendering() };
info.EndPos = { end.X, end.Y };
info.Endpoint = static_cast<SelectionEndpointTarget>(_terminal->SelectionEndpointTarget());
const auto bufferSize{ _terminal->GetTextBuffer().GetSize() };
info.StartAtLeftBoundary = _terminal->GetSelectionAnchor().x == bufferSize.Left();
info.EndAtRightBoundary = _terminal->GetSelectionEnd().x == bufferSize.RightInclusive();
return info;
}
// Method Description:
// - Sets selection's end position to match supplied cursor position, e.g. while mouse dragging.
// Arguments:
// - position: the point in terminal coordinates (in cells, not pixels)
void ControlCore::SetEndSelectionPoint(const til::point position)
{
if (!_terminal->IsSelectionActive())
{
return;
}
// Have to take the lock because the renderer will not draw correctly if
// you move its endpoints while it is generating a frame.
auto lock = _terminal->LockForWriting();
til::point terminalPosition{
std::clamp(position.x, 0, _terminal->GetViewport().Width() - 1),
std::clamp(position.y, 0, _terminal->GetViewport().Height() - 1)
};
// save location (for rendering) + render
_terminal->SetSelectionEnd(terminalPosition);
_updateSelectionUI();
}
// Called when the Terminal wants to set something to the clipboard, i.e.
// when an OSC 52 is emitted.
void ControlCore::_terminalCopyToClipboard(std::wstring_view wstr)
{
_CopyToClipboardHandlers(*this, winrt::make<implementation::CopyToClipboardEventArgs>(winrt::hstring{ wstr }));
}
// Method Description:
// - Given a copy-able selection, get the selected text from the buffer and send it to the
// Windows Clipboard (CascadiaWin32:main.cpp).
// Arguments:
// - singleLine: collapse all of the text to one line
// - formats: which formats to copy (defined by action's CopyFormatting arg). nullptr
// if we should defer which formats are copied to the global setting
bool ControlCore::CopySelectionToClipboard(bool singleLine,
const Windows::Foundation::IReference<CopyFormat>& formats)
{
// no selection --> nothing to copy
if (!_terminal->IsSelectionActive())
{
return false;
}
// extract text from buffer
// RetrieveSelectedTextFromBuffer will lock while it's reading
const auto bufferData = _terminal->RetrieveSelectedTextFromBuffer(singleLine);
// convert text: vector<string> --> string
std::wstring textData;
for (const auto& text : bufferData.text)
{
textData += text;
}
const auto bgColor = _terminal->GetAttributeColors({}).second;
// convert text to HTML format
// GH#5347 - Don't provide a title for the generated HTML, as many
// web applications will paste the title first, followed by the HTML
// content, which is unexpected.
const auto htmlData = formats == nullptr || WI_IsFlagSet(formats.Value(), CopyFormat::HTML) ?
TextBuffer::GenHTML(bufferData,
_actualFont.GetUnscaledSize().Y,
_actualFont.GetFaceName(),
bgColor) :
"";
// convert to RTF format
const auto rtfData = formats == nullptr || WI_IsFlagSet(formats.Value(), CopyFormat::RTF) ?
TextBuffer::GenRTF(bufferData,
_actualFont.GetUnscaledSize().Y,
_actualFont.GetFaceName(),
bgColor) :
"";
// send data up for clipboard
_CopyToClipboardHandlers(*this,
winrt::make<CopyToClipboardEventArgs>(winrt::hstring{ textData },
winrt::to_hstring(htmlData),
winrt::to_hstring(rtfData),
formats));
return true;
}
void ControlCore::SelectAll()
{
auto lock = _terminal->LockForWriting();
_terminal->SelectAll();
_updateSelectionUI();
}
void ControlCore::ClearSelection()
{
auto lock = _terminal->LockForWriting();
_terminal->ClearSelection();
_updateSelectionUI();
}
bool ControlCore::ToggleBlockSelection()
{
auto lock = _terminal->LockForWriting();
if (_terminal->IsSelectionActive())
{
_terminal->SetBlockSelection(!_terminal->IsBlockSelection());
_renderer->TriggerSelection();
// do not update the selection markers!
// if we were showing them, keep it that way.
// otherwise, continue to not show them
return true;
}
return false;
}
void ControlCore::ToggleMarkMode()
{
auto lock = _terminal->LockForWriting();
_terminal->ToggleMarkMode();
_updateSelectionUI();
}
Control::SelectionInteractionMode ControlCore::SelectionMode() const
{
return static_cast<Control::SelectionInteractionMode>(_terminal->SelectionMode());
}
bool ControlCore::SwitchSelectionEndpoint()
{
if (_terminal->IsSelectionActive())
{
_terminal->SwitchSelectionEndpoint();
_updateSelectionUI();
return true;
}
return false;
}
bool ControlCore::ExpandSelectionToWord()
{
if (_terminal->IsSelectionActive())
{
_terminal->ExpandSelectionToWord();
_updateSelectionUI();
return true;
}
return false;
}
// Method Description:
// - Pre-process text pasted (presumably from the clipboard)
// before sending it over the terminal's connection.
void ControlCore::PasteText(const winrt::hstring& hstr)
{
_terminal->WritePastedText(hstr);
_terminal->ClearSelection();
_updateSelectionUI();
_terminal->TrySnapOnInput();
}
FontInfo ControlCore::GetFont() const
{
return _actualFont;
}
winrt::Windows::Foundation::Size ControlCore::FontSize() const noexcept
{
const auto fontSize = _actualFont.GetSize();
return {
::base::saturated_cast<float>(fontSize.X),
::base::saturated_cast<float>(fontSize.Y)
};
}
winrt::hstring ControlCore::FontFaceName() const noexcept
{
// This getter used to return _actualFont.GetFaceName(), however GetFaceName() returns a STL
// string and we need to return a WinRT string. This would require an additional allocation.
// This method is called 10/s by TSFInputControl at the time of writing.
return _actualFontFaceName;
}
uint16_t ControlCore::FontWeight() const noexcept
{
return static_cast<uint16_t>(_actualFont.GetWeight());
}
winrt::Windows::Foundation::Size ControlCore::FontSizeInDips() const
{
const auto fontSize = _actualFont.GetSize();
const auto scale = 1.0f / static_cast<float>(_compositionScale);
return {
fontSize.width * scale,
fontSize.height * scale,
};
}
TerminalConnection::ConnectionState ControlCore::ConnectionState() const
{
return _connection ? _connection.State() : TerminalConnection::ConnectionState::Closed;
}
hstring ControlCore::Title()
{
return hstring{ _terminal->GetConsoleTitle() };
}
hstring ControlCore::WorkingDirectory() const
{
return hstring{ _terminal->GetWorkingDirectory() };
}
bool ControlCore::BracketedPasteEnabled() const noexcept
{
return _terminal->IsXtermBracketedPasteModeEnabled();
}
Windows::Foundation::IReference<winrt::Windows::UI::Color> ControlCore::TabColor() noexcept
{
auto coreColor = _terminal->GetTabColor();
return coreColor.has_value() ? Windows::Foundation::IReference<winrt::Windows::UI::Color>(til::color{ coreColor.value() }) :
nullptr;
}
til::color ControlCore::BackgroundColor() const
{
return _terminal->GetRenderSettings().GetColorAlias(ColorAlias::DefaultBackground);
}
// Method Description:
// - Gets the internal taskbar state value
// Return Value:
// - The taskbar state of this control
const size_t ControlCore::TaskbarState() const noexcept
{
return _terminal->GetTaskbarState();
}
// Method Description:
// - Gets the internal taskbar progress value
// Return Value:
// - The taskbar progress of this control
const size_t ControlCore::TaskbarProgress() const noexcept
{
return _terminal->GetTaskbarProgress();
}
int ControlCore::ScrollOffset()
{
return _terminal->GetScrollOffset();
}
// Function Description:
// - Gets the height of the terminal in lines of text. This is just the
// height of the viewport.
// Return Value:
// - The height of the terminal in lines of text
int ControlCore::ViewHeight() const
{
return _terminal->GetViewport().Height();
}
// Function Description:
// - Gets the height of the terminal in lines of text. This includes the
// history AND the viewport.
// Return Value:
// - The height of the terminal in lines of text
int ControlCore::BufferHeight() const
{
return _terminal->GetBufferHeight();
}
void ControlCore::_terminalWarningBell()
{
// Since this can only ever be triggered by output from the connection,
// then the Terminal already has the write lock when calling this
// callback.
_WarningBellHandlers(*this, nullptr);
}
// Method Description:
// - Called for the Terminal's TitleChanged callback. This will re-raise
// a new winrt TypedEvent that can be listened to.
// - The listeners to this event will re-query the control for the current
// value of Title().
// Arguments:
// - wstr: the new title of this terminal.
// Return Value:
// - <none>
void ControlCore::_terminalTitleChanged(std::wstring_view wstr)
{
// Since this can only ever be triggered by output from the connection,
// then the Terminal already has the write lock when calling this
// callback.
_TitleChangedHandlers(*this, winrt::make<TitleChangedEventArgs>(winrt::hstring{ wstr }));
}
// Method Description:
// - Update the position and size of the scrollbar to match the given
// viewport top, viewport height, and buffer size.
// Additionally fires a ScrollPositionChanged event for anyone who's
// registered an event handler for us.
// Arguments:
// - viewTop: the top of the visible viewport, in rows. 0 indicates the top
// of the buffer.
// - viewHeight: the height of the viewport in rows.
// - bufferSize: the length of the buffer, in rows
void ControlCore::_terminalScrollPositionChanged(const int viewTop,
const int viewHeight,
const int bufferSize)
{
if (!_initializedTerminal)
{
return;
}
// Clear the regex pattern tree so the renderer does not try to render them while scrolling
// We're **NOT** taking the lock here unlike _scrollbarChangeHandler because
// we are already under lock (since this usually happens as a result of writing).
// TODO GH#9617: refine locking around pattern tree
_terminal->ClearPatternTree();
// Start the throttled update of our scrollbar.
auto update{ winrt::make<ScrollPositionChangedArgs>(viewTop,
viewHeight,
bufferSize) };
if (!_inUnitTests)
{
_updateScrollBar->Run(update);
}
else
{
_ScrollPositionChangedHandlers(*this, update);
}
// Additionally, start the throttled update of where our links are.
(*_updatePatternLocations)();
}
void ControlCore::_terminalCursorPositionChanged()
{
// When the buffer's cursor moves, start the throttled func to
// eventually dispatch a CursorPositionChanged event.
_tsfTryRedrawCanvas->Run();
}
void ControlCore::_terminalTaskbarProgressChanged()
{
_TaskbarProgressChangedHandlers(*this, nullptr);
}
void ControlCore::_terminalShowWindowChanged(bool showOrHide)
{
if (_initializedTerminal)
{
auto showWindow = winrt::make_self<implementation::ShowWindowArgs>(showOrHide);
_ShowWindowChangedHandlers(*this, *showWindow);
}
}
// Method Description:
// - Plays a single MIDI note, blocking for the duration.
// Arguments:
// - noteNumber - The MIDI note number to be played (0 - 127).
// - velocity - The force with which the note should be played (0 - 127).
// - duration - How long the note should be sustained (in microseconds).
void ControlCore::_terminalPlayMidiNote(const int noteNumber, const int velocity, const std::chrono::microseconds duration)
{
// The UI thread might try to acquire the console lock from time to time.
// --> Unlock it, so the UI doesn't hang while we're busy.
const auto suspension = _terminal->SuspendLock();
// This call will block for the duration, unless shutdown early.
_midiAudio.PlayNote(reinterpret_cast<HWND>(_owningHwnd), noteNumber, velocity, std::chrono::duration_cast<std::chrono::milliseconds>(duration));
}
bool ControlCore::HasSelection() const
{
return _terminal->IsSelectionActive();
}
bool ControlCore::CopyOnSelect() const
{
return _settings->CopyOnSelect();
}
Windows::Foundation::Collections::IVector<winrt::hstring> ControlCore::SelectedText(bool trimTrailingWhitespace) const
{
// RetrieveSelectedTextFromBuffer will lock while it's reading
const auto internalResult{ _terminal->RetrieveSelectedTextFromBuffer(trimTrailingWhitespace).text };
auto result = winrt::single_threaded_vector<winrt::hstring>();
for (const auto& row : internalResult)
{
result.Append(winrt::hstring{ row });
}
return result;
}
::Microsoft::Console::Types::IUiaData* ControlCore::GetUiaData() const
{
return _terminal.get();
}
// Method Description:
// - Search text in text buffer. This is triggered if the user click
// search button or press enter.
// Arguments:
// - text: the text to search
// - goForward: boolean that represents if the current search direction is forward
// - caseSensitive: boolean that represents if the current search is case sensitive
// Return Value:
// - <none>
void ControlCore::Search(const winrt::hstring& text,
const bool goForward,
const bool caseSensitive)
{
if (text.size() == 0)
{
return;
}
const auto direction = goForward ?
Search::Direction::Forward :
Search::Direction::Backward;
const auto sensitivity = caseSensitive ?
Search::Sensitivity::CaseSensitive :
Search::Sensitivity::CaseInsensitive;
::Search search(*GetUiaData(), text.c_str(), direction, sensitivity);
auto lock = _terminal->LockForWriting();
const auto foundMatch{ search.FindNext() };
if (foundMatch)
{
_terminal->SetBlockSelection(false);
search.Select();
// this is used for search,
// DO NOT call _updateSelectionUI() here.
// We don't want to show the markers so manually tell it to clear it.
_renderer->TriggerSelection();
_UpdateSelectionMarkersHandlers(*this, winrt::make<implementation::UpdateSelectionMarkersEventArgs>(true));
}
// Raise a FoundMatch event, which the control will use to notify
// narrator if there was any results in the buffer
auto foundResults = winrt::make_self<implementation::FoundResultsArgs>(foundMatch);
_FoundMatchHandlers(*this, *foundResults);
}
void ControlCore::Close()
{
if (!_IsClosing())
{
_closing = true;
// Ensure Close() doesn't hang, waiting for MidiAudio to finish playing an hour long song.
_midiAudio.BeginSkip();
// Stop accepting new output and state changes before we disconnect everything.
_connection.TerminalOutput(_connectionOutputEventToken);
_connectionStateChangedRevoker.revoke();
_connection.Close();
}
}
void ControlCore::_rendererWarning(const HRESULT hr)
{
_RendererWarningHandlers(*this, winrt::make<RendererWarningArgs>(hr));
}
void ControlCore::_renderEngineSwapChainChanged(const HANDLE handle)
{
_SwapChainChangedHandlers(*this, winrt::box_value<uint64_t>(reinterpret_cast<uint64_t>(handle)));
}
void ControlCore::_rendererBackgroundColorChanged()
{
_BackgroundColorChangedHandlers(*this, nullptr);
}
void ControlCore::_rendererTabColorChanged()
{
_TabColorChangedHandlers(*this, nullptr);
}
void ControlCore::BlinkAttributeTick()
{
auto lock = _terminal->LockForWriting();
auto& renderSettings = _terminal->GetRenderSettings();
renderSettings.ToggleBlinkRendition(*_renderer);
}
void ControlCore::BlinkCursor()
{
if (!_terminal->IsCursorBlinkingAllowed() &&
_terminal->IsCursorVisible())
{
return;
}
// SetCursorOn will take the write lock for you.
_terminal->SetCursorOn(!_terminal->IsCursorOn());
}
bool ControlCore::CursorOn() const
{
return _terminal->IsCursorOn();
}
void ControlCore::CursorOn(const bool isCursorOn)
{
_terminal->SetCursorOn(isCursorOn);
}
void ControlCore::ResumeRendering()
{
_renderer->ResetErrorStateAndResume();
}
bool ControlCore::IsVtMouseModeEnabled() const
{
return _terminal != nullptr && _terminal->IsTrackingMouseInput();
}
bool ControlCore::ShouldSendAlternateScroll(const unsigned int uiButton,
const int32_t delta) const
{
return _terminal != nullptr && _terminal->ShouldSendAlternateScroll(uiButton, delta);
}
Core::Point ControlCore::CursorPosition() const
{
// If we haven't been initialized yet, then fake it.
if (!_initializedTerminal)
{
return { 0, 0 };
}
auto lock = _terminal->LockForReading();
return _terminal->GetViewportRelativeCursorPosition().to_core_point();
}
// This one's really pushing the boundary of what counts as "encapsulation".
// It really belongs in the "Interactivity" layer, which doesn't yet exist.
// There's so many accesses to the selection in the Core though, that I just
// put this here. The Control shouldn't be futzing that much with the
// selection itself.
void ControlCore::LeftClickOnTerminal(const til::point terminalPosition,
const int numberOfClicks,
const bool altEnabled,
const bool shiftEnabled,
const bool isOnOriginalPosition,
bool& selectionNeedsToBeCopied)
{
auto lock = _terminal->LockForWriting();
// handle ALT key
_terminal->SetBlockSelection(altEnabled);
auto mode = ::Terminal::SelectionExpansion::Char;
if (numberOfClicks == 1)
{
mode = ::Terminal::SelectionExpansion::Char;
}
else if (numberOfClicks == 2)
{
mode = ::Terminal::SelectionExpansion::Word;
}
else if (numberOfClicks == 3)
{
mode = ::Terminal::SelectionExpansion::Line;
}
// Update the selection appropriately
// We reset the active selection if one of the conditions apply:
// - shift is not held
// - GH#9384: the position is the same as of the first click starting
// the selection (we need to reset selection on double-click or
// triple-click, so it captures the word or the line, rather than
// extending the selection)
if (HasSelection() && (!shiftEnabled || isOnOriginalPosition))
{
// Reset the selection
_terminal->ClearSelection();
selectionNeedsToBeCopied = false; // there's no selection, so there's nothing to update
}
if (shiftEnabled && HasSelection())
{
// If shift is pressed and there is a selection we extend it using
// the selection mode (expand the "end" selection point)
_terminal->SetSelectionEnd(terminalPosition, mode);
selectionNeedsToBeCopied = true;
}
else if (mode != ::Terminal::SelectionExpansion::Char || shiftEnabled)
{
// If we are handling a double / triple-click or shift+single click
// we establish selection using the selected mode
// (expand both "start" and "end" selection points)
_terminal->MultiClickSelection(terminalPosition, mode);
selectionNeedsToBeCopied = true;
}
_updateSelectionUI();
}
// Method Description:
// - Updates the renderer's representation of the selection as well as the selection marker overlay in TermControl
void ControlCore::_updateSelectionUI()
{
_renderer->TriggerSelection();
// only show the markers if we're doing a keyboard selection or in mark mode
const bool showMarkers{ _terminal->SelectionMode() >= ::Microsoft::Terminal::Core::Terminal::SelectionInteractionMode::Keyboard };
_UpdateSelectionMarkersHandlers(*this, winrt::make<implementation::UpdateSelectionMarkersEventArgs>(!showMarkers));
}
void ControlCore::AttachUiaEngine(::Microsoft::Console::Render::IRenderEngine* const pEngine)
{
// _renderer will always exist since it's introduced in the ctor
_renderer->AddRenderEngine(pEngine);
}
bool ControlCore::IsInReadOnlyMode() const
{
return _isReadOnly;
}
void ControlCore::ToggleReadOnlyMode()
{
_isReadOnly = !_isReadOnly;
}
void ControlCore::_raiseReadOnlyWarning()
{
auto noticeArgs = winrt::make<NoticeEventArgs>(NoticeLevel::Info, RS_(L"TermControlReadOnly"));
_RaiseNoticeHandlers(*this, std::move(noticeArgs));
}
void ControlCore::_connectionOutputHandler(const hstring& hstr)
{
try
{
_terminal->Write(hstr);
// Start the throttled update of where our hyperlinks are.
(*_updatePatternLocations)();
}
catch (...)
{
// We're expecting to receive an exception here if the terminal
// is closed while we're blocked playing a MIDI note.
}
}
// Method Description:
// - Clear the contents of the buffer. The region cleared is given by
// clearType:
// * Screen: Clear only the contents of the visible viewport, leaving the
// cursor row at the top of the viewport.
// * Scrollback: Clear the contents of the scrollback.
// * All: Do both - clear the visible viewport and the scrollback, leaving
// only the cursor row at the top of the viewport.
// Arguments:
// - clearType: The type of clear to perform.
// Return Value:
// - <none>
void ControlCore::ClearBuffer(Control::ClearBufferType clearType)
{
if (clearType == Control::ClearBufferType::Scrollback || clearType == Control::ClearBufferType::All)
{
_terminal->EraseScrollback();
}
if (clearType == Control::ClearBufferType::Screen || clearType == Control::ClearBufferType::All)
{
// Send a signal to conpty to clear the buffer.
if (auto conpty{ _connection.try_as<TerminalConnection::ConptyConnection>() })
{
// ConPTY will emit sequences to sync up our buffer with its new
// contents.
conpty.ClearBuffer();
}
}
}
hstring ControlCore::ReadEntireBuffer() const
{
auto terminalLock = _terminal->LockForWriting();
const auto& textBuffer = _terminal->GetTextBuffer();
std::wstring str;
const auto lastRow = textBuffer.GetLastNonSpaceCharacter().Y;
for (auto rowIndex = 0; rowIndex <= lastRow; rowIndex++)
{
const auto& row = textBuffer.GetRowByOffset(rowIndex);
const auto rowText = row.GetText();
const auto strEnd = rowText.find_last_not_of(UNICODE_SPACE);
if (strEnd != decltype(rowText)::npos)
{
str.append(rowText.substr(strEnd + 1));
}
if (!row.WasWrapForced())
{
str.append(L"\r\n");
}
}
return hstring{ str };
}
// Helper to check if we're on Windows 11 or not. This is used to check if
// we need to use acrylic to achieve transparency, because vintage opacity
// doesn't work in islands on win10.
// Remove when we can remove the rest of GH#11285
bool ControlCore::IsVintageOpacityAvailable() noexcept
{
OSVERSIONINFOEXW osver{};
osver.dwOSVersionInfoSize = sizeof(osver);
osver.dwBuildNumber = 22000;
DWORDLONG dwlConditionMask = 0;
VER_SET_CONDITION(dwlConditionMask, VER_BUILDNUMBER, VER_GREATER_EQUAL);
return VerifyVersionInfoW(&osver, VER_BUILDNUMBER, dwlConditionMask) != FALSE;
}
Core::Scheme ControlCore::ColorScheme() const noexcept
{
Core::Scheme s;
// This part is definitely a hack.
//
// This function is usually used by the "Preview Color Scheme"
// functionality in TerminalPage. If we've got an unfocused appearance,
// then we've applied that appearance before this is even getting called
// (because the command palette is open with focus on top of us). If we
// return the _current_ colors now, we'll return out the _unfocused_
// colors. If we do that, and the user dismisses the command palette,
// then the scheme that will get restored is the _unfocused_ one, which
// is not what we want.
//
// So if that's the case, then let's grab the colors from the focused
// appearance as the scheme instead. We'll lose any current runtime
// changes to the color table, but those were already blown away when we
// switched to an unfocused appearance.
//
// IF WE DON'T HAVE AN UNFOCUSED APPEARANCE: then just ask the Terminal
// for it's current color table. That way, we can restore those colors
// back.
if (HasUnfocusedAppearance())
{
s.Foreground = _settings->FocusedAppearance()->DefaultForeground();
s.Background = _settings->FocusedAppearance()->DefaultBackground();
s.CursorColor = _settings->FocusedAppearance()->CursorColor();
s.Black = _settings->FocusedAppearance()->GetColorTableEntry(0);
s.Red = _settings->FocusedAppearance()->GetColorTableEntry(1);
s.Green = _settings->FocusedAppearance()->GetColorTableEntry(2);
s.Yellow = _settings->FocusedAppearance()->GetColorTableEntry(3);
s.Blue = _settings->FocusedAppearance()->GetColorTableEntry(4);
s.Purple = _settings->FocusedAppearance()->GetColorTableEntry(5);
s.Cyan = _settings->FocusedAppearance()->GetColorTableEntry(6);
s.White = _settings->FocusedAppearance()->GetColorTableEntry(7);
s.BrightBlack = _settings->FocusedAppearance()->GetColorTableEntry(8);
s.BrightRed = _settings->FocusedAppearance()->GetColorTableEntry(9);
s.BrightGreen = _settings->FocusedAppearance()->GetColorTableEntry(10);
s.BrightYellow = _settings->FocusedAppearance()->GetColorTableEntry(11);
s.BrightBlue = _settings->FocusedAppearance()->GetColorTableEntry(12);
s.BrightPurple = _settings->FocusedAppearance()->GetColorTableEntry(13);
s.BrightCyan = _settings->FocusedAppearance()->GetColorTableEntry(14);
s.BrightWhite = _settings->FocusedAppearance()->GetColorTableEntry(15);
}
else
{
s = _terminal->GetColorScheme();
}
// This might be a tad bit of a hack. This event only gets called by set
// color scheme / preview color scheme, and in that case, we know the
// control _is_ focused.
s.SelectionBackground = _settings->FocusedAppearance()->SelectionBackground();
return s;
}
// Method Description:
// - Apply the given color scheme to this control. We'll take the colors out
// of it and apply them to our focused appearance, and update the terminal
// buffer with the new color table.
// - This is here to support the Set Color Scheme action, and the ability to
// preview schemes in the control.
// Arguments:
// - scheme: the collection of colors to apply.
// Return Value:
// - <none>
void ControlCore::ColorScheme(const Core::Scheme& scheme)
{
auto l{ _terminal->LockForWriting() };
_settings->FocusedAppearance()->DefaultForeground(scheme.Foreground);
_settings->FocusedAppearance()->DefaultBackground(scheme.Background);
_settings->FocusedAppearance()->CursorColor(scheme.CursorColor);
_settings->FocusedAppearance()->SelectionBackground(scheme.SelectionBackground);
_settings->FocusedAppearance()->SetColorTableEntry(0, scheme.Black);
_settings->FocusedAppearance()->SetColorTableEntry(1, scheme.Red);
_settings->FocusedAppearance()->SetColorTableEntry(2, scheme.Green);
_settings->FocusedAppearance()->SetColorTableEntry(3, scheme.Yellow);
_settings->FocusedAppearance()->SetColorTableEntry(4, scheme.Blue);
_settings->FocusedAppearance()->SetColorTableEntry(5, scheme.Purple);
_settings->FocusedAppearance()->SetColorTableEntry(6, scheme.Cyan);
_settings->FocusedAppearance()->SetColorTableEntry(7, scheme.White);
_settings->FocusedAppearance()->SetColorTableEntry(8, scheme.BrightBlack);
_settings->FocusedAppearance()->SetColorTableEntry(9, scheme.BrightRed);
_settings->FocusedAppearance()->SetColorTableEntry(10, scheme.BrightGreen);
_settings->FocusedAppearance()->SetColorTableEntry(11, scheme.BrightYellow);
_settings->FocusedAppearance()->SetColorTableEntry(12, scheme.BrightBlue);
_settings->FocusedAppearance()->SetColorTableEntry(13, scheme.BrightPurple);
_settings->FocusedAppearance()->SetColorTableEntry(14, scheme.BrightCyan);
_settings->FocusedAppearance()->SetColorTableEntry(15, scheme.BrightWhite);
_terminal->ApplyScheme(scheme);
_renderEngine->SetSelectionBackground(til::color{ _settings->SelectionBackground() });
_renderer->TriggerRedrawAll(true);
}
bool ControlCore::HasUnfocusedAppearance() const
{
return _settings->HasUnfocusedAppearance();
}
void ControlCore::AdjustOpacity(const double opacityAdjust, const bool relative)
{
if (relative)
{
AdjustOpacity(opacityAdjust);
}
else
{
_setOpacity(opacityAdjust);
}
}
// Method Description:
// - Notifies the attached PTY that the window has changed visibility state
// - NOTE: Most VT commands are generated in `TerminalDispatch` and sent to this
// class as the target for transmission. But since this message isn't
// coming in via VT parsing (and rather from a window state transition)
// we generate and send it here.
// Arguments:
// - visible: True for visible; false for not visible.
// Return Value:
// - <none>
void ControlCore::WindowVisibilityChanged(const bool showOrHide)
{
if (_initializedTerminal)
{
// show is true, hide is false
if (auto conpty{ _connection.try_as<TerminalConnection::ConptyConnection>() })
{
conpty.ShowHide(showOrHide);
}
}
}
// Method Description:
// - When the control gains focus, it needs to tell ConPTY about this.
// Usually, these sequences are reserved for applications that
// specifically request SET_FOCUS_EVENT_MOUSE, ?1004h. ConPTY uses this
// sequence REGARDLESS to communicate if the control was focused or not.
// - Even if a client application disables this mode, the Terminal & conpty
// should always request this from the hosting terminal (and just ignore
// internally to ConPTY).
// - Full support for this sequence is tracked in GH#11682.
// - This is related to work done for GH#2988.
void ControlCore::GotFocus()
{
_focusChanged(true);
}
// See GotFocus.
void ControlCore::LostFocus()
{
_focusChanged(false);
}
void ControlCore::_focusChanged(bool focused)
{
// GH#13461 - temporarily turn off read-only mode, send the focus event,
// then turn it back on. Even in focus mode, focus events are fine to
// send. We don't want to pop a warning every time the control is
// focused.
const auto previous = std::exchange(_isReadOnly, false);
const auto restore = wil::scope_exit([&]() { _isReadOnly = previous; });
_terminal->FocusChanged(focused);
}
bool ControlCore::_isBackgroundTransparent()
{
// If we're:
// * Not fully opaque
// * rendering on top of an image
//
// then the renderer should not render "default background" text with a
// fully opaque background. Doing that would cover up our nice
// transparency, or our acrylic, or our image.
return Opacity() < 1.0f || !_settings->BackgroundImage().empty() || _settings->UseBackgroundImageForWindow();
}
uint64_t ControlCore::OwningHwnd()
{
return _owningHwnd;
}
void ControlCore::OwningHwnd(uint64_t owner)
{
if (owner != _owningHwnd && _connection)
{
if (auto conpty{ _connection.try_as<TerminalConnection::ConptyConnection>() })
{
conpty.ReparentWindow(owner);
}
}
_owningHwnd = owner;
}
Windows::Foundation::Collections::IVector<Control::ScrollMark> ControlCore::ScrollMarks() const
{
auto internalMarks{ _terminal->GetScrollMarks() };
auto v = winrt::single_threaded_observable_vector<Control::ScrollMark>();
for (const auto& mark : internalMarks)
{
Control::ScrollMark m{};
// sneaky: always evaluate the color of the mark to a real value
// before shoving it into the optional. If the mark doesn't have a
// specific color set, we'll use the value from the color table
// that's appropriate for this category of mark. If we do have a
// color set, then great we'll use that. The TermControl can then
// always use the value in the Mark regardless if it was actually
// set or not.
m.Color = OptionalFromColor(_terminal->GetColorForMark(mark));
m.Start = mark.start.to_core_point();
m.End = mark.end.to_core_point();
v.Append(m);
}
return v;
}
void ControlCore::AddMark(const Control::ScrollMark& mark)
{
::Microsoft::Console::VirtualTerminal::DispatchTypes::ScrollMark m{};
if (mark.Color.HasValue)
{
m.color = til::color{ mark.Color.Color };
}
if (HasSelection())
{
m.start = til::point{ _terminal->GetSelectionAnchor() };
m.end = til::point{ _terminal->GetSelectionEnd() };
}
else
{
m.start = m.end = til::point{ _terminal->GetTextBuffer().GetCursor().GetPosition() };
}
// The version of this that only accepts a ScrollMark will automatically
// set the start & end to the cursor position.
_terminal->AddMark(m, m.start, m.end);
}
void ControlCore::ClearMark() { _terminal->ClearMark(); }
void ControlCore::ClearAllMarks() { _terminal->ClearAllMarks(); }
void ControlCore::ScrollToMark(const Control::ScrollToMarkDirection& direction)
{
const auto currentOffset = ScrollOffset();
const auto& marks{ _terminal->GetScrollMarks() };
std::optional<DispatchTypes::ScrollMark> tgt;
switch (direction)
{
case ScrollToMarkDirection::Last:
{
int highest = currentOffset;
for (const auto& mark : marks)
{
const auto newY = mark.start.y;
if (newY > highest)
{
tgt = mark;
highest = newY;
}
}
break;
}
case ScrollToMarkDirection::First:
{
int lowest = currentOffset;
for (const auto& mark : marks)
{
const auto newY = mark.start.y;
if (newY < lowest)
{
tgt = mark;
lowest = newY;
}
}
break;
}
case ScrollToMarkDirection::Next:
{
int minDistance = INT_MAX;
for (const auto& mark : marks)
{
const auto delta = mark.start.y - currentOffset;
if (delta > 0 && delta < minDistance)
{
tgt = mark;
minDistance = delta;
}
}
break;
}
case ScrollToMarkDirection::Previous:
default:
{
int minDistance = INT_MAX;
for (const auto& mark : marks)
{
const auto delta = currentOffset - mark.start.y;
if (delta > 0 && delta < minDistance)
{
tgt = mark;
minDistance = delta;
}
}
break;
}
}
const auto viewHeight = ViewHeight();
const auto bufferSize = BufferHeight();
// UserScrollViewport, to update the Terminal about where the viewport should be
// then raise a _terminalScrollPositionChanged to inform the control to update the scrollbar.
if (tgt.has_value())
{
UserScrollViewport(tgt->start.y);
_terminalScrollPositionChanged(tgt->start.y, viewHeight, bufferSize);
}
else
{
if (direction == ScrollToMarkDirection::Last || direction == ScrollToMarkDirection::Next)
{
UserScrollViewport(BufferHeight());
_terminalScrollPositionChanged(BufferHeight(), viewHeight, bufferSize);
}
else if (direction == ScrollToMarkDirection::First || direction == ScrollToMarkDirection::Previous)
{
UserScrollViewport(0);
_terminalScrollPositionChanged(0, viewHeight, bufferSize);
}
}
}
void ControlCore::ColorSelection(const Control::SelectionColor& fg, const Control::SelectionColor& bg, Core::MatchMode matchMode)
{
if (HasSelection())
{
const auto pForeground = winrt::get_self<implementation::SelectionColor>(fg);
const auto pBackground = winrt::get_self<implementation::SelectionColor>(bg);
TextColor foregroundAsTextColor;
TextColor backgroundAsTextColor;
if (pForeground)
{
foregroundAsTextColor = pForeground->AsTextColor();
}
if (pBackground)
{
backgroundAsTextColor = pBackground->AsTextColor();
}
TextAttribute attr;
attr.SetForeground(foregroundAsTextColor);
attr.SetBackground(backgroundAsTextColor);
_terminal->ColorSelection(attr, matchMode);
_terminal->ClearSelection();
if (matchMode != Core::MatchMode::None)
{
// ClearSelection will invalidate the selection area... but if we are
// coloring other matches, then we need to make sure those get redrawn,
// too.
_renderer->TriggerRedrawAll();
}
}
}
}