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LibLine: Recalculate the origin on resize

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This commit is contained in:
Ali Mohammad Pur 2021-06-19 06:10:10 +04:30 • committed by Andreas Kling
parent 2f2b7814d1
commit 4bf14715a1
2 changed files with 39 additions and 12 deletions
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35
Userland/Libraries/LibLine/Editor.cpp
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@ -598,6 +598,27 @@ void Editor::resized()
m_previous_num_columns = m_num_columns;
get_terminal_size();
if (!m_has_origin_reset_scheduled) {
// Reset the origin, but make sure it doesn't blow up if we can't read it
if (set_origin(false)) {
handle_resize_event(false);
} else {
deferred_invoke([this](auto&) { handle_resize_event(true); });
m_has_origin_reset_scheduled = true;
}
}
}
void Editor::handle_resize_event(bool reset_origin)
{
m_has_origin_reset_scheduled = false;
if (reset_origin && !set_origin(false)) {
m_has_origin_reset_scheduled = true;
return deferred_invoke([this](auto&) { handle_resize_event(true); });
}
set_origin(m_origin_row, 1);
reposition_cursor(true);
m_suggestion_display->redisplay(m_suggestion_manager, m_num_lines, m_num_columns);
reposition_cursor();
@ -1751,7 +1772,7 @@ Editor::VTState Editor::actual_rendered_string_length_step(StringMetrics& metric
return state;
}
Vector<size_t, 2> Editor::vt_dsr()
Result<Vector<size_t, 2>, Editor::Error> Editor::vt_dsr()
{
char buf[16];
@ -1783,7 +1804,7 @@ Vector<size_t, 2> Editor::vt_dsr()
} while (more_junk_to_read);
if (m_input_error.has_value())
return { 1, 1 };
return m_input_error.value();
fputs("\033[6n", stderr);
fflush(stderr);
@ -1813,15 +1834,11 @@ Vector<size_t, 2> Editor::vt_dsr()
continue;
}
dbgln("Error while reading DSR: {}", strerror(errno));
m_input_error = Error::ReadFailure;
finish();
return { 1, 1 };
return Error::ReadFailure;
}
if (nread == 0) {
m_input_error = Error::Empty;
finish();
dbgln("Terminal DSR issue; received no response");
return { 1, 1 };
return Error::Empty;
}
switch (state) {
@ -1897,7 +1914,7 @@ Vector<size_t, 2> Editor::vt_dsr()
if (has_error)
dbgln("Terminal DSR issue, couldn't parse DSR response");
return { row, col };
return Vector<size_t, 2> { row, col };
}
String Editor::line(size_t up_to_index) const