old-hiro/qt/widget/horizontal-scroll-bar.cpp
2016-05-15 12:45:15 +02:00

46 lines
1.1 KiB
C++

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