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Terminal: Don't write erroneous characters to PTY when modifiers pressed.

Browse source 
Additionally the Alt modifier now generates the correct characters, as do
Insert/Delete/PgUp/PgDown.

Patch contributed by "pd"
This commit is contained in:
Andreas Kling 2019-06-28 21:44:32 +02:00
parent 274b41e47c
commit 96ca8bea6c
1 changed files with 37 additions and 20 deletions
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57
Applications/Terminal/Terminal.cpp
View file

@ -1010,42 +1010,59 @@ void Terminal::event(CEvent& event)
void Terminal::keydown_event(GKeyEvent& event)
{
char ch = !event.text().is_empty() ? event.text()[0] : 0;
if (event.ctrl()) {
if (ch >= 'a' && ch <= 'z') {
ch = ch - 'a' + 1;
} else if (ch == '\\') {
ch = 0x1c;
}
}
switch (event.key()) {
case KeyCode::Key_Up:
write(m_ptm_fd, "\033[A", 3);
break;
return;
case KeyCode::Key_Down:
write(m_ptm_fd, "\033[B", 3);
break;
return;
case KeyCode::Key_Right:
write(m_ptm_fd, "\033[C", 3);
break;
return;
case KeyCode::Key_Left:
write(m_ptm_fd, "\033[D", 3);
break;
return;
case KeyCode::Key_Insert:
write(m_ptm_fd, "\033[2~", 4);
return;
case KeyCode::Key_Delete:
write(m_ptm_fd, "\033[3~", 4);
return;
case KeyCode::Key_Home:
write(m_ptm_fd, "\033[H", 3);
break;
return;
case KeyCode::Key_End:
write(m_ptm_fd, "\033[F", 3);
break;
case KeyCode::Key_RightShift:
// Prevent RightShift from being sent to whatever's running in the
// terminal. Prevents `~@` (null) character from being sent after every
// character entered with right shift.
break;
return;
case KeyCode::Key_PageUp:
write(m_ptm_fd, "\033[5~", 4);
return;
case KeyCode::Key_PageDown:
write(m_ptm_fd, "\033[6~", 4);
return;
default:
write(m_ptm_fd, &ch, 1);
break;
}
// Key event was not one of the above special cases,
// attempt to treat it as a character...
char ch = !event.text().is_empty() ? event.text()[0] : 0;
if (ch) {
if (event.ctrl()) {
if (ch >= 'a' && ch <= 'z') {
ch = ch - 'a' + 1;
} else if (ch == '\\') {
ch = 0x1c;
}
}
// ALT modifier sends escape prefix
if (event.alt())
write(m_ptm_fd, "\033", 1);
write(m_ptm_fd, &ch, 1);
}
}
void Terminal::paint_event(GPaintEvent& event)