bsnes/hiro/qt/widget/vertical-scroll-bar.cpp

47 lines
1.1 KiB
C++

#if defined(Hiro_VerticalScrollBar)
namespace hiro {
auto pVerticalScrollBar::construct() -> void {
qtWidget = qtVerticalScrollBar = new QtVerticalScrollBar(*this);
qtVerticalScrollBar->setRange(0, 100);
qtVerticalScrollBar->setPageStep(101 >> 3);
qtVerticalScrollBar->connect(qtVerticalScrollBar, SIGNAL(valueChanged(int)), SLOT(onChange()));
pWidget::construct();
_setState();
}
auto pVerticalScrollBar::destruct() -> void {
delete qtVerticalScrollBar;
qtWidget = qtVerticalScrollBar = nullptr;
}
auto pVerticalScrollBar::minimumSize() const -> Size {
return {15, 0};
}
auto pVerticalScrollBar::setLength(unsigned length) -> void {
_setState();
}
auto pVerticalScrollBar::setPosition(unsigned position) -> void {
_setState();
}
auto pVerticalScrollBar::_setState() -> void {
signed length = state().length + (state().length == 0);
qtVerticalScrollBar->setRange(0, length - 1);
qtVerticalScrollBar->setPageStep(length >> 3);
qtVerticalScrollBar->setValue(state().position);
}
auto QtVerticalScrollBar::onChange() -> void {
p.state().position = value();
p.self().doChange();
}
}
#endif