bool UIManager::updateDraggingWidget(const UIWidgetPtr& draggingWidget, const Point& clickedPos)
{
bool accepted = false;
UIWidgetPtr oldDraggingWidget = m_draggingWidget;
m_draggingWidget = nullptr;
if(oldDraggingWidget) {
UIWidgetPtr droppedWidget;
if(!clickedPos.isNull()) {
auto clickedChildren = m_rootWidget->recursiveGetChildrenByPos(clickedPos);
for(const UIWidgetPtr& child : clickedChildren) {
if(child->onDrop(oldDraggingWidget, clickedPos)) {
droppedWidget = child;
break;
}
}
}
accepted = oldDraggingWidget->onDragLeave(droppedWidget, clickedPos);
oldDraggingWidget->updateState(Fw::DraggingState);
}
if(draggingWidget) {
if(draggingWidget->onDragEnter(clickedPos)) {
m_draggingWidget = draggingWidget;
draggingWidget->updateState(Fw::DraggingState);
accepted = true;
}
}
return accepted;
}
bool UIWidget::onMouseRelease(const Point& mousePos, Fw::MouseButton button)
{
if(isPressed() && getRect().contains(mousePos))
callLuaField("onClick");
UIWidgetPtr draggedWidget = g_ui.getDraggingWidget();
if(draggedWidget && button == Fw::MouseLeftButton && (containsPoint(mousePos) || asUIWidget() == g_ui.getRootWidget())) {
onDrop(draggedWidget, mousePos);
draggedWidget->onDragLeave(asUIWidget(), mousePos);
draggedWidget->setDragging(false);
}
return callLuaField<bool>("onMouseRelease", mousePos, button);
}
