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Fix selection logic with shift on multi-click #9403

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4 commits merged into from
Mar 8, 2021
Merged

Fix selection logic with shift on multi-click #9403

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7cca19d
Fix selection not to extend on multi-click
Don-Vito Mar 5, 2021
1aa147f
Introduce selection reset on anchor / same position click
Don-Vito Mar 7, 2021
a11c9c2
Remove clean selection on anchor as mintty lives without it
Don-Vito Mar 7, 2021
8d9d713
Remove extra space
carlos-zamora Mar 8, 2021
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63 changes: 42 additions & 21 deletions src/cascadia/TerminalControl/TermControl.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -79,6 +79,7 @@ namespace winrt::Microsoft::Terminal::TerminalControl::implementation
_blinkTimer{},
_lastMouseClickTimestamp{},
_lastMouseClickPos{},
_lastMouseClickPosNoSelection{},
_selectionNeedsToBeCopied{ false },
_searchBox{ nullptr }
{
Expand Down Expand Up @@ -1342,35 +1343,55 @@ namespace winrt::Microsoft::Terminal::TerminalControl::implementation
mode = ::Terminal::SelectionExpansionMode::Line;
}

// Update the selection appropriately
if (ctrlEnabled && multiClickMapper == 1 &&
!(_terminal->GetHyperlinkAtPosition(terminalPosition).empty()))
{
_HyperlinkHandler(_terminal->GetHyperlinkAtPosition(terminalPosition));
}
else if (shiftEnabled && _terminal->IsSelectionActive())
{
// Shift+Click: only set expand on the "end" selection point
_terminal->SetSelectionEnd(terminalPosition, mode);
_selectionNeedsToBeCopied = true;
}
else if (mode == ::Terminal::SelectionExpansionMode::Cell && !shiftEnabled)
{
// Single Click: reset the selection and begin a new one
_terminal->ClearSelection();
_singleClickTouchdownPos = cursorPosition;
_selectionNeedsToBeCopied = false; // there's no selection, so there's nothing to update
}
else
{
// Multi-Click Selection: expand both "start" and "end" selection points
_terminal->MultiClickSelection(terminalPosition, mode);
_selectionNeedsToBeCopied = true;
}
// Update the selection appropriately

_lastMouseClickTimestamp = point.Timestamp();
_lastMouseClickPos = cursorPosition;
_renderer->TriggerSelection();
// Capture the position of the first click when no selection is active
if (mode == ::Terminal::SelectionExpansionMode::Cell && !_terminal->IsSelectionActive())
{
_singleClickTouchdownPos = cursorPosition;
_lastMouseClickPosNoSelection = cursorPosition;
}

// 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,
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// rather than extending the selection)
if (_terminal->IsSelectionActive() && (!shiftEnabled || _lastMouseClickPosNoSelection == cursorPosition))
{
// Reset the selection
_terminal->ClearSelection();
_selectionNeedsToBeCopied = false; // there's no selection, so there's nothing to update
}

if (shiftEnabled)
{
if (_terminal->IsSelectionActive())
{
// If there is a selection we extend it using the selection mode
// (expand the "end"selection point)
_terminal->SetSelectionEnd(terminalPosition, mode);
}
else
{
// If there is no selection we establish it using the selected mode
// (expand both "start" and "end" selection points)
_terminal->MultiClickSelection(terminalPosition, mode);
}
_selectionNeedsToBeCopied = true;
}
Comment on lines +1374 to +1389
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IN RETROSPECT: I don't think this is right. We might have lost the case where there's no selection, and you double/triple click on a word

@Don-Vito as an fyi

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I may stage a revert for this until we can get it in and get it right.

I'd like to see manual test runs for the following scenarios:

  • single click = no selection
  • single click and drag = selection starting from first point
  • single click in unfocused pane and drag = focus pane, selection starting from first point
  • double-click = selects a whole word
  • triple-click = selects a whole line
  • double-click and drag = selects a whole word, drag selects whole words
  • triple-click and drag = selects a whole line, drag selects whole lines
  • Shift single-click = defines start point
  • second Shift single-click = defines end point
  • Shift double-click = selects entire word
  • Shift triple-click = selects entire line
  • Shift double-click and drag = selects entire word, drag selects whole words
  • Shift triple-click and drag = selects entire line, drag selects whole lines


_lastMouseClickTimestamp = point.Timestamp();
_lastMouseClickPos = cursorPosition;
_renderer->TriggerSelection();
}
}
else if (point.Properties().IsRightButtonPressed())
{
Expand Down
1 change: 1 addition & 0 deletions src/cascadia/TerminalControl/TermControl.h
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Original file line number Diff line number Diff line change
Expand Up @@ -261,6 +261,7 @@ namespace winrt::Microsoft::Terminal::TerminalControl::implementation
unsigned int _multiClickCounter;
Timestamp _lastMouseClickTimestamp;
std::optional<winrt::Windows::Foundation::Point> _lastMouseClickPos;
std::optional<winrt::Windows::Foundation::Point> _lastMouseClickPosNoSelection;
std::optional<winrt::Windows::Foundation::Point> _singleClickTouchdownPos;
// This field tracks whether the selection has changed meaningfully
// since it was last copied. It's generally used to prevent copyOnSelect
Expand Down