996 lines
36 KiB
C++
996 lines
36 KiB
C++
// Copyright (c) Microsoft Corporation.
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// Licensed under the MIT license.
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#include "pch.h"
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#include "Pane.h"
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using namespace winrt::Windows::Foundation;
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using namespace winrt::Windows::UI::Xaml;
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using namespace winrt::Windows::UI::Core;
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using namespace winrt::Microsoft::Terminal::Settings;
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using namespace winrt::Microsoft::Terminal::TerminalControl;
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using namespace winrt::TerminalApp;
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static const int PaneSeparatorSize = 16;
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static const float Half = 0.50f;
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Pane::Pane(const GUID& profile, const TermControl& control, const bool lastFocused) :
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_control{ control },
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_lastFocused{ lastFocused },
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_profile{ profile }
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{
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_root.Children().Append(_control);
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_connectionClosedToken = _control.ConnectionClosed({ this, &Pane::_ControlClosedHandler });
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// Set the background of the pane to match that of the theme's default grid
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// background. This way, we'll match the small underline under the tabs, and
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// the UI will be consistent on bot light and dark modes.
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const auto res = Application::Current().Resources();
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const auto key = winrt::box_value(L"BackgroundGridThemeStyle");
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if (res.HasKey(key))
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{
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const auto g = res.Lookup(key);
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const auto style = g.try_as<winrt::Windows::UI::Xaml::Style>();
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// try_as fails by returning nullptr
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if (style)
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{
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_root.Style(style);
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}
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}
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}
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// Method Description:
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// - Update the size of this pane. Resizes each of our columns so they have the
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// same relative sizes, given the newSize.
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// - Because we're just manually setting the row/column sizes in pixels, we have
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// to be told our new size, we can't just use our own OnSized event, because
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// that _won't fire when we get smaller_.
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// Arguments:
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// - newSize: the amount of space that this pane has to fill now.
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// Return Value:
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// - <none>
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void Pane::ResizeContent(const Size& newSize)
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{
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const auto width = newSize.Width;
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const auto height = newSize.Height;
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_CreateRowColDefinitions(newSize);
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if (_splitState == SplitState::Vertical)
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{
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const auto paneSizes = _GetPaneSizes(width);
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const Size firstSize{ paneSizes.first, height };
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const Size secondSize{ paneSizes.second, height };
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_firstChild->ResizeContent(firstSize);
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_secondChild->ResizeContent(secondSize);
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}
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else if (_splitState == SplitState::Horizontal)
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{
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const auto paneSizes = _GetPaneSizes(height);
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const Size firstSize{ width, paneSizes.first };
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const Size secondSize{ width, paneSizes.second };
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_firstChild->ResizeContent(firstSize);
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_secondChild->ResizeContent(secondSize);
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}
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}
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// Method Description:
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// - Adjust our child percentages to increase the size of one of our children
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// and decrease the size of the other.
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// - Adjusts the separation amount by 5%
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// - Does nothing if the direction doesn't match our current split direction
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// Arguments:
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// - direction: the direction to move our separator. If it's down or right,
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// we'll be increasing the size of the first of our children. Else, we'll be
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// decreasing the size of our first child.
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// Return Value:
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// - false if we couldn't resize this pane in the given direction, else true.
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bool Pane::_Resize(const Direction& direction)
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{
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if (!DirectionMatchesSplit(direction, _splitState))
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{
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return false;
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}
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float amount = .05f;
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if (direction == Direction::Right || direction == Direction::Down)
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{
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amount = -amount;
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}
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// Make sure we're not making a pane explode here by resizing it to 0 characters.
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const bool changeWidth = _splitState == SplitState::Vertical;
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const Size actualSize{ gsl::narrow_cast<float>(_root.ActualWidth()),
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gsl::narrow_cast<float>(_root.ActualHeight()) };
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// actualDimension is the size in DIPs of this pane in the direction we're
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// resizing.
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auto actualDimension = changeWidth ? actualSize.Width : actualSize.Height;
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actualDimension -= PaneSeparatorSize;
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const auto firstMinSize = _firstChild->_GetMinSize();
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const auto secondMinSize = _secondChild->_GetMinSize();
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// These are the minimum amount of space we need for each of our children
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const auto firstMinDimension = changeWidth ? firstMinSize.Width : firstMinSize.Height;
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const auto secondMinDimension = changeWidth ? secondMinSize.Width : secondMinSize.Height;
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const auto firstMinPercent = firstMinDimension / actualDimension;
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const auto secondMinPercent = secondMinDimension / actualDimension;
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// Make sure that the first pane doesn't get bigger than the space we need
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// to reserve for the second.
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const auto firstMaxPercent = 1.0f - secondMinPercent;
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_firstPercent = std::clamp(_firstPercent.value() - amount, firstMinPercent, firstMaxPercent);
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// Update the other child to fill the remaining percent
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_secondPercent = 1.0f - _firstPercent.value();
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// Resize our columns to match the new percentages.
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ResizeContent(actualSize);
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return true;
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}
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// Method Description:
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// - Moves the separator between panes, as to resize each child on either size
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// of the separator. Tries to move a separator in the given direction. The
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// separator moved is the separator that's closest depth-wise to the
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// currently focused pane, that's also in the correct direction to be moved.
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// If there isn't such a separator, then this method returns false, as we
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// couldn't handle the resize.
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// Arguments:
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// - direction: The direction to move the separator in.
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// Return Value:
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// - true if we or a child handled this resize request.
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bool Pane::ResizePane(const Direction& direction)
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{
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// If we're a leaf, do nothing. We can't possibly have a descendant with a
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// separator the correct direction.
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if (_IsLeaf())
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{
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return false;
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}
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// Check if either our first or second child is the currently focused leaf.
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// If it is, and the requested resize direction matches our separator, then
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// we're the pane that needs to adjust its separator.
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// If our separator is the wrong direction, then we can't handle it.
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const bool firstIsFocused = _firstChild->_IsLeaf() && _firstChild->_lastFocused;
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const bool secondIsFocused = _secondChild->_IsLeaf() && _secondChild->_lastFocused;
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if (firstIsFocused || secondIsFocused)
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{
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return _Resize(direction);
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}
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else
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{
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// If neither of our children were the focused leaf, then recurse into
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// our children and see if they can handle the resize.
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// For each child, if it has a focused descendant, try having that child
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// handle the resize.
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// If the child wasn't able to handle the resize, it's possible that
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// there were no descendants with a separator the correct direction. If
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// our separator _is_ the correct direction, then we should be the pane
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// to resize. Otherwise, just return false, as we couldn't handle it
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// either.
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if ((!_firstChild->_IsLeaf()) && _firstChild->_HasFocusedChild())
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{
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return _firstChild->ResizePane(direction) || _Resize(direction);
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}
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else if ((!_secondChild->_IsLeaf()) && _secondChild->_HasFocusedChild())
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{
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return _secondChild->ResizePane(direction) || _Resize(direction);
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}
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}
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return false;
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}
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// Method Description:
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// - Attempts to handle moving focus to one of our children. If our split
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// direction isn't appropriate for the move direction, then we'll return
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// false, to try and let our parent handle the move. If our child we'd move
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// focus to is already focused, we'll also return false, to again let our
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// parent try and handle the focus movement.
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// Arguments:
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// - direction: The direction to move the focus in.
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// Return Value:
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// - true if we handled this focus move request.
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bool Pane::_NavigateFocus(const Direction& direction)
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{
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if (!DirectionMatchesSplit(direction, _splitState))
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{
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return false;
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}
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const bool focusSecond = (direction == Direction::Right) || (direction == Direction::Down);
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const auto newlyFocusedChild = focusSecond ? _secondChild : _firstChild;
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// If the child we want to move focus to is _already_ focused, return false,
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// to try and let our parent figure it out.
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if (newlyFocusedChild->WasLastFocused())
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{
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return false;
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}
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// Transfer focus to our child, and update the focus of our tree.
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newlyFocusedChild->_FocusFirstChild();
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UpdateFocus();
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return true;
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}
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// Method Description:
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// - Attempts to move focus to one of our children. If we have a focused child,
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// we'll try to move the focus in the direction requested.
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// - If there isn't a pane that exists as a child of this pane in the correct
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// direction, we'll return false. This will indicate to our parent that they
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// should try and move the focus themselves. In this way, the focus can move
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// up and down the tree to the correct pane.
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// - This method is _very_ similar to ResizePane. Both are trying to find the
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// right separator to move (focus) in a direction.
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// Arguments:
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// - direction: The direction to move the focus in.
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// Return Value:
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// - true if we or a child handled this focus move request.
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bool Pane::NavigateFocus(const Direction& direction)
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{
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// If we're a leaf, do nothing. We can't possibly have a descendant with a
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// separator the correct direction.
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if (_IsLeaf())
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{
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return false;
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}
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// Check if either our first or second child is the currently focused leaf.
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// If it is, and the requested move direction matches our separator, then
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// we're the pane that needs to handle this focus move.
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const bool firstIsFocused = _firstChild->_IsLeaf() && _firstChild->_lastFocused;
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const bool secondIsFocused = _secondChild->_IsLeaf() && _secondChild->_lastFocused;
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if (firstIsFocused || secondIsFocused)
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{
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return _NavigateFocus(direction);
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}
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else
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{
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// If neither of our children were the focused leaf, then recurse into
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// our children and see if they can handle the focus move.
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// For each child, if it has a focused descendant, try having that child
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// handle the focus move.
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// If the child wasn't able to handle the focus move, it's possible that
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// there were no descendants with a separator the correct direction. If
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// our separator _is_ the correct direction, then we should be the pane
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// to move focus into our other child. Otherwise, just return false, as
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// we couldn't handle it either.
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if ((!_firstChild->_IsLeaf()) && _firstChild->_HasFocusedChild())
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{
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return _firstChild->NavigateFocus(direction) || _NavigateFocus(direction);
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}
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else if ((!_secondChild->_IsLeaf()) && _secondChild->_HasFocusedChild())
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{
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return _secondChild->NavigateFocus(direction) || _NavigateFocus(direction);
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}
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}
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return false;
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}
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// Method Description:
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// - Called when our attached control is closed. Triggers listeners to our close
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// event, if we're a leaf pane.
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// - If this was called, and we became a parent pane (due to work on another
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// thread), this function will do nothing (allowing the control's new parent
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// to handle the event instead).
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// Arguments:
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// - <none>
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// Return Value:
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// - <none>
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void Pane::_ControlClosedHandler()
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{
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std::unique_lock lock{ _createCloseLock };
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// It's possible that this event handler started being executed, then before
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// we got the lock, another thread created another child. So our control is
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// actually no longer _our_ control, and instead could be a descendant.
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//
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// When the control's new Pane takes ownership of the control, the new
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// parent will register it's own event handler. That event handler will get
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// fired after this handler returns, and will properly cleanup state.
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if (!_IsLeaf())
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{
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return;
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}
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if (_control.ShouldCloseOnExit())
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{
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// Fire our Closed event to tell our parent that we should be removed.
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_closedHandlers();
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}
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}
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// Method Description:
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// - Fire our Closed event to tell our parent that we should be removed.
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// Arguments:
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// - <none>
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// Return Value:
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// - <none>
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void Pane::Close()
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{
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// Fire our Closed event to tell our parent that we should be removed.
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_closedHandlers();
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}
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// Method Description:
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// - Get the root UIElement of this pane. There may be a single TermControl as a
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// child, or an entire tree of grids and panes as children of this element.
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// Arguments:
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// - <none>
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// Return Value:
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// - the Grid acting as the root of this pane.
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Controls::Grid Pane::GetRootElement()
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{
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return _root;
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}
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// Method Description:
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// - If this is the last focused pane, returns itself. Returns nullptr if this
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// is a leaf and it's not focused. If it's a parent, it returns nullptr if no
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// children of this pane were the last pane to be focused, or the Pane that
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// _was_ the last pane to be focused (if there was one).
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// - This Pane's control might not currently be focused, if the tab itself is
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// not currently focused.
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// Return Value:
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// - nullptr if we're a leaf and unfocused, or no children were marked
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// `_lastFocused`, else returns this
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std::shared_ptr<Pane> Pane::GetFocusedPane()
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{
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if (_IsLeaf())
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{
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return _lastFocused ? shared_from_this() : nullptr;
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}
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else
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{
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auto firstFocused = _firstChild->GetFocusedPane();
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if (firstFocused != nullptr)
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{
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return firstFocused;
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}
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return _secondChild->GetFocusedPane();
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}
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}
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// Method Description:
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// - Returns nullptr if no children of this pane were the last control to be
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// focused, or the TermControl that _was_ the last control to be focused (if
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// there was one).
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// - This control might not currently be focused, if the tab itself is not
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// currently focused.
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// Arguments:
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// - <none>
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// Return Value:
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// - nullptr if no children were marked `_lastFocused`, else the TermControl
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// that was last focused.
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TermControl Pane::GetFocusedTerminalControl()
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{
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auto lastFocused = GetFocusedPane();
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return lastFocused ? lastFocused->_control : nullptr;
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}
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// Method Description:
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// - Returns nullopt if no children of this pane were the last control to be
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// focused, or the GUID of the profile of the last control to be focused (if
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// there was one).
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// Arguments:
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// - <none>
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// Return Value:
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// - nullopt if no children of this pane were the last control to be
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// focused, else the GUID of the profile of the last control to be focused
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std::optional<GUID> Pane::GetFocusedProfile()
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{
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auto lastFocused = GetFocusedPane();
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return lastFocused ? lastFocused->_profile : std::nullopt;
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}
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// Method Description:
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// - Returns true if this pane was the last pane to be focused in a tree of panes.
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// Arguments:
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// - <none>
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// Return Value:
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// - true iff we were the last pane focused in this tree of panes.
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bool Pane::WasLastFocused() const noexcept
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{
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return _lastFocused;
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}
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// Method Description:
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// - Returns true iff this pane has no child panes.
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// Arguments:
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// - <none>
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// Return Value:
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// - true iff this pane has no child panes.
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bool Pane::_IsLeaf() const noexcept
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{
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return _splitState == SplitState::None;
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}
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// Method Description:
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// - Returns true if this pane is currently focused, or there is a pane which is
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// a child of this pane that is actively focused
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// Arguments:
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// - <none>
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// Return Value:
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// - true if the currently focused pane is either this pane, or one of this
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// pane's descendants
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bool Pane::_HasFocusedChild() const noexcept
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{
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// We're intentionally making this one giant expression, so the compiler
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// will skip the following lookups if one of the lookups before it returns
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// true
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return (_control && _control.FocusState() != FocusState::Unfocused) ||
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(_firstChild && _firstChild->_HasFocusedChild()) ||
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(_secondChild && _secondChild->_HasFocusedChild());
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}
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// Method Description:
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// - Update the focus state of this pane, and all its descendants.
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// * If this is a leaf node, and our control is actively focused, we'll mark
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// ourselves as the _lastFocused.
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// * If we're not a leaf, we'll recurse on our children to check them.
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// Arguments:
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// - <none>
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// Return Value:
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// - <none>
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void Pane::UpdateFocus()
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{
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if (_IsLeaf())
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{
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const auto controlFocused = _control &&
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_control.FocusState() != FocusState::Unfocused;
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_lastFocused = controlFocused;
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}
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else
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{
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_lastFocused = false;
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_firstChild->UpdateFocus();
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_secondChild->UpdateFocus();
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}
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}
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// Method Description:
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// - Focuses this control if we're a leaf, or attempts to focus the first leaf
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// of our first child, recursively.
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// Arguments:
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// - <none>
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// Return Value:
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// - <none>
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void Pane::_FocusFirstChild()
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{
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if (_IsLeaf())
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{
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_control.Focus(FocusState::Programmatic);
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}
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else
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{
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_firstChild->_FocusFirstChild();
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}
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}
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// Method Description:
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// - Attempts to update the settings of this pane or any children of this pane.
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// * If this pane is a leaf, and our profile guid matches the parameter, then
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// we'll apply the new settings to our control.
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// * If we're not a leaf, we'll recurse on our children.
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// Arguments:
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// - settings: The new TerminalSettings to apply to any matching controls
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// - profile: The GUID of the profile these settings should apply to.
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// Return Value:
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// - <none>
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void Pane::UpdateSettings(const TerminalSettings& settings, const GUID& profile)
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{
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if (!_IsLeaf())
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{
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_firstChild->UpdateSettings(settings, profile);
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_secondChild->UpdateSettings(settings, profile);
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}
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else
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{
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if (profile == _profile)
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{
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_control.UpdateSettings(settings);
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}
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}
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}
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// Method Description:
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// - Closes one of our children. In doing so, takes the control from the other
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// child, and makes this pane a leaf node again.
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// Arguments:
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// - closeFirst: if true, the first child should be closed, and the second
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// should be preserved, and vice-versa for false.
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// Return Value:
|
|
// - <none>
|
|
void Pane::_CloseChild(const bool closeFirst)
|
|
{
|
|
// Lock the create/close lock so that another operation won't concurrently
|
|
// modify our tree
|
|
std::unique_lock lock{ _createCloseLock };
|
|
|
|
// If we're a leaf, then chances are both our children closed in close
|
|
// succession. We waited on the lock while the other child was closed, so
|
|
// now we don't have a child to close anymore. Return here. When we moved
|
|
// the non-closed child into us, we also set up event handlers that will be
|
|
// triggered when we return from this.
|
|
if (_IsLeaf())
|
|
{
|
|
return;
|
|
}
|
|
|
|
auto closedChild = closeFirst ? _firstChild : _secondChild;
|
|
auto remainingChild = closeFirst ? _secondChild : _firstChild;
|
|
|
|
// If the only child left is a leaf, that means we're a leaf now.
|
|
if (remainingChild->_IsLeaf())
|
|
{
|
|
// take the control and profile of the pane that _wasn't_ closed.
|
|
_control = remainingChild->_control;
|
|
_profile = remainingChild->_profile;
|
|
|
|
// Add our new event handler before revoking the old one.
|
|
_connectionClosedToken = _control.ConnectionClosed({ this, &Pane::_ControlClosedHandler });
|
|
|
|
// Revoke the old event handlers. Remove both the handlers for the panes
|
|
// themselves closing, and remove their handlers for their controls
|
|
// closing. At this point, if the remaining child's control is closed,
|
|
// they'll trigger only our event handler for the control's close.
|
|
_firstChild->Closed(_firstClosedToken);
|
|
_secondChild->Closed(_secondClosedToken);
|
|
closedChild->_control.ConnectionClosed(closedChild->_connectionClosedToken);
|
|
remainingChild->_control.ConnectionClosed(remainingChild->_connectionClosedToken);
|
|
|
|
// If either of our children was focused, we want to take that focus from
|
|
// them.
|
|
_lastFocused = _firstChild->_lastFocused || _secondChild->_lastFocused;
|
|
|
|
// Remove all the ui elements of our children. This'll make sure we can
|
|
// re-attach the TermControl to our Grid.
|
|
_firstChild->_root.Children().Clear();
|
|
_secondChild->_root.Children().Clear();
|
|
|
|
// Reset our UI:
|
|
_root.Children().Clear();
|
|
_root.ColumnDefinitions().Clear();
|
|
_root.RowDefinitions().Clear();
|
|
_separatorRoot = { nullptr };
|
|
|
|
// Reattach the TermControl to our grid.
|
|
_root.Children().Append(_control);
|
|
|
|
if (_lastFocused)
|
|
{
|
|
_control.Focus(FocusState::Programmatic);
|
|
}
|
|
|
|
_splitState = SplitState::None;
|
|
|
|
// Release our children.
|
|
_firstChild = nullptr;
|
|
_secondChild = nullptr;
|
|
}
|
|
else
|
|
{
|
|
// First stash away references to the old panes and their tokens
|
|
const auto oldFirstToken = _firstClosedToken;
|
|
const auto oldSecondToken = _secondClosedToken;
|
|
const auto oldFirst = _firstChild;
|
|
const auto oldSecond = _secondChild;
|
|
|
|
// Steal all the state from our child
|
|
_splitState = remainingChild->_splitState;
|
|
_separatorRoot = remainingChild->_separatorRoot;
|
|
_firstChild = remainingChild->_firstChild;
|
|
_secondChild = remainingChild->_secondChild;
|
|
|
|
// Set up new close handlers on the children
|
|
_SetupChildCloseHandlers();
|
|
|
|
// Revoke the old event handlers on our new children
|
|
_firstChild->Closed(remainingChild->_firstClosedToken);
|
|
_secondChild->Closed(remainingChild->_secondClosedToken);
|
|
|
|
// Revoke event handlers on old panes and controls
|
|
oldFirst->Closed(oldFirstToken);
|
|
oldSecond->Closed(oldSecondToken);
|
|
closedChild->_control.ConnectionClosed(closedChild->_connectionClosedToken);
|
|
|
|
// Reset our UI:
|
|
_root.Children().Clear();
|
|
_root.ColumnDefinitions().Clear();
|
|
_root.RowDefinitions().Clear();
|
|
|
|
// Copy the old UI over to our grid.
|
|
// Start by copying the row/column definitions. Iterate over the
|
|
// rows/cols, and remove each one from the old grid, and attach it to
|
|
// our grid instead.
|
|
while (remainingChild->_root.ColumnDefinitions().Size() > 0)
|
|
{
|
|
auto col = remainingChild->_root.ColumnDefinitions().GetAt(0);
|
|
remainingChild->_root.ColumnDefinitions().RemoveAt(0);
|
|
_root.ColumnDefinitions().Append(col);
|
|
}
|
|
while (remainingChild->_root.RowDefinitions().Size() > 0)
|
|
{
|
|
auto row = remainingChild->_root.RowDefinitions().GetAt(0);
|
|
remainingChild->_root.RowDefinitions().RemoveAt(0);
|
|
_root.RowDefinitions().Append(row);
|
|
}
|
|
|
|
// Remove the child's UI elements from the child's grid, so we can
|
|
// attach them to us instead.
|
|
remainingChild->_root.Children().Clear();
|
|
|
|
_root.Children().Append(_firstChild->GetRootElement());
|
|
_root.Children().Append(_separatorRoot);
|
|
_root.Children().Append(_secondChild->GetRootElement());
|
|
|
|
// If the closed child was focused, transfer the focus to it's first sibling.
|
|
if (closedChild->_lastFocused)
|
|
{
|
|
_FocusFirstChild();
|
|
}
|
|
|
|
// Release the pointers that the child was holding.
|
|
remainingChild->_firstChild = nullptr;
|
|
remainingChild->_secondChild = nullptr;
|
|
remainingChild->_separatorRoot = { nullptr };
|
|
}
|
|
}
|
|
|
|
// Method Description:
|
|
// - Adds event handlers to our children to handle their close events.
|
|
// Arguments:
|
|
// - <none>
|
|
// Return Value:
|
|
// - <none>
|
|
void Pane::_SetupChildCloseHandlers()
|
|
{
|
|
_firstClosedToken = _firstChild->Closed([this]() {
|
|
_root.Dispatcher().RunAsync(CoreDispatcherPriority::Normal, [=]() {
|
|
_CloseChild(true);
|
|
});
|
|
});
|
|
|
|
_secondClosedToken = _secondChild->Closed([this]() {
|
|
_root.Dispatcher().RunAsync(CoreDispatcherPriority::Normal, [=]() {
|
|
_CloseChild(false);
|
|
});
|
|
});
|
|
}
|
|
|
|
// Method Description:
|
|
// - Sets up row/column definitions for this pane. There are three total
|
|
// row/cols. The middle one is for the separator. The first and third are for
|
|
// each of the child panes, and are given a size in pixels, based off the
|
|
// availiable space, and the percent of the space they respectively consume,
|
|
// which is stored in _firstPercent and _secondPercent.
|
|
// - Does nothing if our split state is currently set to SplitState::None
|
|
// Arguments:
|
|
// - rootSize: The dimensions in pixels that this pane (and its children should consume.)
|
|
// Return Value:
|
|
// - <none>
|
|
void Pane::_CreateRowColDefinitions(const Size& rootSize)
|
|
{
|
|
if (_splitState == SplitState::Vertical)
|
|
{
|
|
_root.ColumnDefinitions().Clear();
|
|
|
|
// Create three columns in this grid: one for each pane, and one for the separator.
|
|
auto separatorColDef = Controls::ColumnDefinition();
|
|
separatorColDef.Width(GridLengthHelper::Auto());
|
|
|
|
const auto paneSizes = _GetPaneSizes(rootSize.Width);
|
|
|
|
auto firstColDef = Controls::ColumnDefinition();
|
|
firstColDef.Width(GridLengthHelper::FromPixels(paneSizes.first));
|
|
|
|
auto secondColDef = Controls::ColumnDefinition();
|
|
secondColDef.Width(GridLengthHelper::FromPixels(paneSizes.second));
|
|
|
|
_root.ColumnDefinitions().Append(firstColDef);
|
|
_root.ColumnDefinitions().Append(separatorColDef);
|
|
_root.ColumnDefinitions().Append(secondColDef);
|
|
}
|
|
else if (_splitState == SplitState::Horizontal)
|
|
{
|
|
_root.RowDefinitions().Clear();
|
|
|
|
// Create three rows in this grid: one for each pane, and one for the separator.
|
|
auto separatorRowDef = Controls::RowDefinition();
|
|
separatorRowDef.Height(GridLengthHelper::Auto());
|
|
|
|
const auto paneSizes = _GetPaneSizes(rootSize.Height);
|
|
|
|
auto firstRowDef = Controls::RowDefinition();
|
|
firstRowDef.Height(GridLengthHelper::FromPixels(paneSizes.first));
|
|
|
|
auto secondRowDef = Controls::RowDefinition();
|
|
secondRowDef.Height(GridLengthHelper::FromPixels(paneSizes.second));
|
|
|
|
_root.RowDefinitions().Append(firstRowDef);
|
|
_root.RowDefinitions().Append(separatorRowDef);
|
|
_root.RowDefinitions().Append(secondRowDef);
|
|
}
|
|
}
|
|
|
|
// Method Description:
|
|
// - Initializes our UI for a new split in this pane. Sets up row/column
|
|
// definitions, and initializes the separator grid. Does nothing if our split
|
|
// state is currently set to SplitState::None
|
|
// Arguments:
|
|
// - <none>
|
|
// Return Value:
|
|
// - <none>
|
|
void Pane::_CreateSplitContent()
|
|
{
|
|
Size actualSize{ gsl::narrow_cast<float>(_root.ActualWidth()),
|
|
gsl::narrow_cast<float>(_root.ActualHeight()) };
|
|
|
|
_CreateRowColDefinitions(actualSize);
|
|
|
|
if (_splitState == SplitState::Vertical)
|
|
{
|
|
// Create the pane separator
|
|
_separatorRoot = Controls::Grid{};
|
|
// Controls::UserControl control{};
|
|
// _separatorRoot.Children().Append(control);
|
|
|
|
// _separatorRoot.ManipulationMode(winrt::Windows::UI::Xaml::Input::ManipulationModes::TranslateX
|
|
// | winrt::Windows::UI::Xaml::Input::ManipulationModes::TranslateY);
|
|
_separatorRoot.ManipulationMode(winrt::Windows::UI::Xaml::Input::ManipulationModes::All);
|
|
auto brush = Media::SolidColorBrush{};
|
|
brush.Color(winrt::Windows::UI::Colors::Transparent());
|
|
|
|
_separatorRoot.Background(brush);
|
|
|
|
_separatorRoot.ManipulationStarted([this](auto&&, auto& args) {
|
|
auto pos = args.Position();
|
|
pos;
|
|
cumulative = Point{ 0, 0 };
|
|
});
|
|
_separatorRoot.ManipulationDelta([this](auto&&, auto& args) {
|
|
auto pos = args.Position();
|
|
pos;
|
|
auto posCopy = pos;
|
|
auto transform = _root.TransformToVisual(nullptr);
|
|
auto inverse = transform.Inverse();
|
|
auto offset = transform.TransformPoint({ 0, 0 });
|
|
auto delta = args.Delta();
|
|
auto deltaTrans = delta.Translation;
|
|
|
|
// Turn the delta into a percentage
|
|
const Size actualSize{ gsl::narrow_cast<float>(_root.ActualWidth()),
|
|
gsl::narrow_cast<float>(_root.ActualHeight()) };
|
|
const bool changeWidth = _splitState == SplitState::Vertical;
|
|
auto actualDimension = changeWidth ? actualSize.Width : actualSize.Height;
|
|
actualDimension -= PaneSeparatorSize;
|
|
|
|
auto deltaPercent = deltaTrans.X / actualDimension;
|
|
_firstPercent = _firstPercent.value() + deltaPercent;
|
|
_secondPercent = 1.0f - _firstPercent.value();
|
|
|
|
// Resize our columns to match the new percentages.
|
|
ResizeContent(actualSize);
|
|
|
|
// auto trans = transform.try_as<Media::TranslateTransform>();
|
|
// auto transform = winrt::Windows::UI::Xaml::TransformToVisual(_root);
|
|
// auto rel = inverse.TransformPoint(posCopy);
|
|
// auto rootOrigin = _root.Position();
|
|
// auto relativePos = { pos.X - rootOrigin.X,
|
|
// pos.Y - rootOrigin.Y
|
|
// };
|
|
auto rel = { pos.X - offset.X, pos.Y - offset.Y };
|
|
cumulative.X += deltaTrans.X;
|
|
cumulative.Y += deltaTrans.Y;
|
|
auto theThing = cumulative;
|
|
auto a = 0;
|
|
a++;
|
|
a;
|
|
});
|
|
_separatorRoot.ManipulationCompleted([](auto&&, auto& args) {
|
|
auto pos = args.Position();
|
|
pos;
|
|
});
|
|
|
|
_separatorRoot.Width(PaneSeparatorSize);
|
|
// NaN is the special value XAML uses for "Auto" sizing.
|
|
_separatorRoot.Height(NAN);
|
|
}
|
|
else if (_splitState == SplitState::Horizontal)
|
|
{
|
|
// Create the pane separator
|
|
_separatorRoot = Controls::Grid{};
|
|
_separatorRoot.Height(PaneSeparatorSize);
|
|
// NaN is the special value XAML uses for "Auto" sizing.
|
|
_separatorRoot.Width(NAN);
|
|
}
|
|
}
|
|
|
|
// Method Description:
|
|
// - Sets the row/column of our child UI elements, to match our current split type.
|
|
// Arguments:
|
|
// - <none>
|
|
// Return Value:
|
|
// - <none>
|
|
void Pane::_ApplySplitDefinitions()
|
|
{
|
|
if (_splitState == SplitState::Vertical)
|
|
{
|
|
Controls::Grid::SetColumn(_firstChild->GetRootElement(), 0);
|
|
Controls::Grid::SetColumn(_separatorRoot, 1);
|
|
Controls::Grid::SetColumn(_secondChild->GetRootElement(), 2);
|
|
}
|
|
else if (_splitState == SplitState::Horizontal)
|
|
{
|
|
Controls::Grid::SetRow(_firstChild->GetRootElement(), 0);
|
|
Controls::Grid::SetRow(_separatorRoot, 1);
|
|
Controls::Grid::SetRow(_secondChild->GetRootElement(), 2);
|
|
}
|
|
}
|
|
|
|
// Method Description:
|
|
// - Vertically split the focused pane in our tree of panes, and place the given
|
|
// TermControl into the newly created pane. If we're the focused pane, then
|
|
// we'll create two new children, and place them side-by-side in our Grid.
|
|
// Arguments:
|
|
// - profile: The profile GUID to associate with the newly created pane.
|
|
// - control: A TermControl to use in the new pane.
|
|
// Return Value:
|
|
// - <none>
|
|
void Pane::SplitVertical(const GUID& profile, const TermControl& control)
|
|
{
|
|
// If we're not the leaf, recurse into our children to split them.
|
|
if (!_IsLeaf())
|
|
{
|
|
if (_firstChild->_HasFocusedChild())
|
|
{
|
|
_firstChild->SplitVertical(profile, control);
|
|
}
|
|
else if (_secondChild->_HasFocusedChild())
|
|
{
|
|
_secondChild->SplitVertical(profile, control);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
_Split(SplitState::Vertical, profile, control);
|
|
}
|
|
|
|
// Method Description:
|
|
// - Horizontally split the focused pane in our tree of panes, and place the given
|
|
// TermControl into the newly created pane. If we're the focused pane, then
|
|
// we'll create two new children, and place them side-by-side in our Grid.
|
|
// Arguments:
|
|
// - profile: The profile GUID to associate with the newly created pane.
|
|
// - control: A TermControl to use in the new pane.
|
|
// Return Value:
|
|
// - <none>
|
|
void Pane::SplitHorizontal(const GUID& profile, const TermControl& control)
|
|
{
|
|
if (!_IsLeaf())
|
|
{
|
|
if (_firstChild->_HasFocusedChild())
|
|
{
|
|
_firstChild->SplitHorizontal(profile, control);
|
|
}
|
|
else if (_secondChild->_HasFocusedChild())
|
|
{
|
|
_secondChild->SplitHorizontal(profile, control);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
_Split(SplitState::Horizontal, profile, control);
|
|
}
|
|
|
|
// Method Description:
|
|
// - Does the bulk of the work of creating a new split. Initializes our UI,
|
|
// creates a new Pane to host the control, registers event handlers.
|
|
// Arguments:
|
|
// - splitType: what type of split we should create.
|
|
// - profile: The profile GUID to associate with the newly created pane.
|
|
// - control: A TermControl to use in the new pane.
|
|
// Return Value:
|
|
// - <none>
|
|
void Pane::_Split(SplitState splitType, const GUID& profile, const TermControl& control)
|
|
{
|
|
// Lock the create/close lock so that another operation won't concurrently
|
|
// modify our tree
|
|
std::unique_lock lock{ _createCloseLock };
|
|
|
|
// revoke our handler - the child will take care of the control now.
|
|
_control.ConnectionClosed(_connectionClosedToken);
|
|
_connectionClosedToken.value = 0;
|
|
|
|
_splitState = splitType;
|
|
|
|
_firstPercent = { Half };
|
|
_secondPercent = { Half };
|
|
|
|
_CreateSplitContent();
|
|
|
|
// Remove any children we currently have. We can't add the existing
|
|
// TermControl to a new grid until we do this.
|
|
_root.Children().Clear();
|
|
|
|
// Create two new Panes
|
|
// Move our control, guid into the first one.
|
|
// Move the new guid, control into the second.
|
|
_firstChild = std::make_shared<Pane>(_profile.value(), _control);
|
|
_profile = std::nullopt;
|
|
_control = { nullptr };
|
|
_secondChild = std::make_shared<Pane>(profile, control);
|
|
|
|
_root.Children().Append(_firstChild->GetRootElement());
|
|
_root.Children().Append(_separatorRoot);
|
|
_root.Children().Append(_secondChild->GetRootElement());
|
|
|
|
_ApplySplitDefinitions();
|
|
|
|
// Register event handlers on our children to handle their Close events
|
|
_SetupChildCloseHandlers();
|
|
|
|
_lastFocused = false;
|
|
}
|
|
|
|
// Method Description:
|
|
// - Gets the size in pixels of each of our children, given the full size they
|
|
// should fill. Accounts for the size of the separator that should be between
|
|
// them as well.
|
|
// Arguments:
|
|
// - fullSize: the amount of space in pixels that should be filled by our
|
|
// children and their separator
|
|
// Return Value:
|
|
// - a pair with the size of our first child and the size of our second child,
|
|
// respectively.
|
|
std::pair<float, float> Pane::_GetPaneSizes(const float& fullSize)
|
|
{
|
|
if (_IsLeaf())
|
|
{
|
|
THROW_HR(E_FAIL);
|
|
}
|
|
|
|
const auto sizeMinusSeparator = fullSize - PaneSeparatorSize;
|
|
const auto firstSize = sizeMinusSeparator * _firstPercent.value();
|
|
const auto secondSize = sizeMinusSeparator * _secondPercent.value();
|
|
return { firstSize, secondSize };
|
|
}
|
|
|
|
// Method Description:
|
|
// - Get the absolute minimum size that this pane can be resized to and still
|
|
// have 1x1 character visible, in each of its children. This includes the
|
|
// space needed for the separator.
|
|
// Arguments:
|
|
// - <none>
|
|
// Return Value:
|
|
// - The minimum size that this pane can be resized to and still have a visible
|
|
// character.
|
|
Size Pane::_GetMinSize() const
|
|
{
|
|
if (_IsLeaf())
|
|
{
|
|
return _control.MinimumSize();
|
|
}
|
|
else
|
|
{
|
|
const auto firstSize = _firstChild->_GetMinSize();
|
|
const auto secondSize = _secondChild->_GetMinSize();
|
|
const auto newWidth = firstSize.Width + secondSize.Width + (_splitState == SplitState::Vertical ? PaneSeparatorSize : 0);
|
|
const auto newHeight = firstSize.Height + secondSize.Height + (_splitState == SplitState::Horizontal ? PaneSeparatorSize : 0);
|
|
return { newWidth, newHeight };
|
|
}
|
|
}
|
|
|
|
DEFINE_EVENT(Pane, Closed, _closedHandlers, ConnectionClosedEventArgs);
|