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Move the cursor to the input location.

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Most CJK users use IME (input method) to type CJK characters. They need
the cursor to be at the correct location, not in the bottom right
corner.

This CL does:
 * Move the cursor the focus() element.
 * Hide the cursor (and show it at exit)
 * Intercept SIGINT to guarantee proper cleanup all the time.

This should fix the second issue mentionned on:
https://github.com/ArthurSonzogni/FTXUI/issues/2
This commit is contained in:
ArthurSonzogni
2019-06-29 18:52:58 +02:00
parent 38df095b4a
commit 86c3b60a6f
6 changed files with 85 additions and 30 deletions
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28
src/ftxui/screen/screen.cpp
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@@ -139,8 +139,11 @@ std::string Screen::ResetPosition() {
void Screen::Clear() {
pixels_ = std::vector<std::vector<Pixel>>(dimy_,
std::vector<Pixel>(dimx_, Pixel()));
cursor_.x = dimx_ - 1;
cursor_.y = dimy_ - 1;
}
// clang-format off
void Screen::ApplyShader() {
// Merge box characters togethers.
for (int y = 1; y < dimy_; ++y) {
@@ -150,26 +153,19 @@ void Screen::ApplyShader() {
wchar_t& cur = at(x, y);
// Left vs current
if (cur == U'│' && left == U'─')
cur = U'┤';
if (cur == U'─' && left == U'│')
left = U'├';
if (cur == U'├' && left == U'─')
cur = U'┼';
if (cur == U'─' && left == U'┤')
left = U'┼';
if (cur == U'│' && left == U'─') cur = U'┤';
if (cur == U'─' && left == U'│') left = U'├';
if (cur == U'├' && left == U'─') cur = U'┼';
if (cur == U'─' && left == U'┤') left = U'┼';
// Top vs current
if (cur == U'─' && top == U'│')
cur = U'┴';
if (cur == U'│' && top == U'─')
top = U'┬';
if (cur == U'┬' && top == U'│')
cur = U'┼';
if (cur == U'│' && top == U'┴')
top = U'┼';
if (cur == U'─' && top == U'│') cur = U'┴';
if (cur == U'│' && top == U'─') top = U'┬';
if (cur == U'┬' && top == U'│') cur = U'┼';
if (cur == U'│' && top == U'┴') top = U'┼';
}
}
}
// clang-format on
}; // namespace ftxui