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Support whole-word deletion in ui::edit

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This commit is contained in:
Nikita Lisitsa 2022-05-10 11:58:25 +03:00
parent 39fe68e6f7
commit 922daee6d2
2 changed files with 47 additions and 10 deletions
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1
libs/ui/include/psemek/ui/edit.hpp
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@ -88,6 +88,7 @@ namespace psemek::ui
bool editing_ = false;
bool mouseover_ = false;
std::optional<float> mouse_x_;
bool ctrl_down_ = false;
std::size_t caret_ = 0;
float caret_blink_period_ = 0.5f;

56
libs/ui/source/edit.cpp
View file

@ -189,6 +189,9 @@ namespace psemek::ui
bool edit::on_event(key_press const & e)
{
if (e.key == SDLK_LCTRL)
ctrl_down_ = e.down;
if (e.down && editing_)
{
if (e.key == SDLK_LEFT)
@ -243,24 +246,57 @@ namespace psemek::ui
}
else if (e.key == SDLK_BACKSPACE)
{
if (caret_ > 0)
if (ctrl_down_)
{
--caret_;
std::size_t start = caret_;
while (start > 0 && std::isspace(text_[start - 1])) --start;
while (start > 0 && !std::isspace(text_[start - 1])) --start;
auto new_text = text_;
new_text.erase(new_text.begin() + caret_);
if (!set_text(std::move(new_text), false))
++caret_;
reset_caret();
new_text.erase(start, caret_ - start);
if (set_text(std::move(new_text), false))
{
caret_ = start;
reset_caret();
}
}
else
{
if (caret_ > 0)
{
--caret_;
auto new_text = text_;
new_text.erase(new_text.begin() + caret_);
if (!set_text(std::move(new_text), false))
++caret_;
reset_caret();
}
}
}
else if (e.key == SDLK_DELETE)
{
if (caret_ < text_.size())
if (ctrl_down_)
{
std::size_t end = caret_;
while (end < text_.size() && !std::isspace(text_[end])) ++end;
while (end < text_.size() && std::isspace(text_[end])) ++end;
auto new_text = text_;
new_text.erase(new_text.begin() + caret_);
set_text(std::move(new_text), false);
reset_caret();
new_text.erase(caret_, end - caret_);
if (set_text(std::move(new_text), false))
{
reset_caret();
}
}
else
{
if (caret_ < text_.size())
{
auto new_text = text_;
new_text.erase(new_text.begin() + caret_);
set_text(std::move(new_text), false);
reset_caret();
}
}
}