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feat: Support mouse scroll. (#201)

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This commit is contained in:
Arthur Sonzogni
2021-09-08 09:36:37 +02:00
committed by GitHub
parent ed28bad02a
commit 4d50dadb41
12 changed files with 237 additions and 109 deletions
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27
src/ftxui/component/container.cpp
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@@ -54,11 +54,7 @@ class ContainerBase : public ComponentBase {
virtual bool EventHandler(Event) { return false; }
virtual bool OnMouseEvent(Event event) {
for (Component& child : children_) {
if (child->OnEvent(event))
return true;
}
return false;
return ComponentBase::OnEvent(event);
}
int selected_ = 0;
@@ -111,6 +107,27 @@ class VerticalContainer : public ContainerBase {
*selector_ = std::max(0, std::min(int(children_.size()) - 1, *selector_));
return old_selected != *selector_;
}
bool OnMouseEvent(Event event) override {
if (ContainerBase::OnMouseEvent(event))
return true;
if (event.mouse().button != Mouse::WheelUp &&
event.mouse().button != Mouse::WheelDown) {
return false;
}
if (!Focusable())
return false;
if (event.mouse().button == Mouse::WheelUp)
MoveSelector(-1);
if (event.mouse().button == Mouse::WheelDown)
MoveSelector(+1);
*selector_ = std::max(0, std::min(int(children_.size()) - 1, *selector_));
return true;
}
};
class HorizontalContainer : public ContainerBase {