mirror of
https://github.com/WarmUpTill/SceneSwitcher.git
synced 2026-04-06 01:05:35 -05:00
117 lines
3.1 KiB
C++
117 lines
3.1 KiB
C++
#include "list-editor.hpp"
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#include "ui-helpers.hpp"
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#include <QEvent>
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namespace advss {
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ListEditor::ListEditor(QWidget *parent, bool reorder)
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: QWidget(parent),
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_list(new QListWidget()),
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_controls(new ListControls(this, reorder)),
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_mainLayout(new QVBoxLayout()),
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_placeholder(new QLabel(_list->viewport()))
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{
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QWidget::connect(_controls, SIGNAL(Add()), this, SLOT(Add()));
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QWidget::connect(_controls, SIGNAL(Remove()), this, SLOT(Remove()));
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QWidget::connect(_controls, SIGNAL(Up()), this, SLOT(Up()));
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QWidget::connect(_controls, SIGNAL(Down()), this, SLOT(Down()));
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QWidget::connect(_list, SIGNAL(itemDoubleClicked(QListWidgetItem *)),
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this, SLOT(Clicked(QListWidgetItem *)));
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QWidget::connect(_list->model(),
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SIGNAL(rowsInserted(QModelIndex, int, int)), this,
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SLOT(UpdatePlaceholder()));
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QWidget::connect(_list->model(),
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SIGNAL(rowsRemoved(QModelIndex, int, int)), this,
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SLOT(UpdatePlaceholder()));
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QWidget::connect(_list->model(), SIGNAL(modelReset()), this,
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SLOT(UpdatePlaceholder()));
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_placeholder->setAlignment(Qt::AlignCenter);
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_placeholder->setWordWrap(true);
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_placeholder->hide();
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_list->viewport()->installEventFilter(this);
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_mainLayout->setContentsMargins(0, 0, 0, 0);
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_mainLayout->addWidget(_list);
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_mainLayout->addWidget(_controls);
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setLayout(_mainLayout);
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}
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void ListEditor::SetPlaceholderText(const QString &text)
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{
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_placeholder->setText(text);
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UpdatePlaceholder();
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}
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void ListEditor::UpdatePlaceholder()
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{
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bool visible = !_placeholder->text().isEmpty() && _list->count() == 0;
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_placeholder->setVisible(visible);
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if (visible) {
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_placeholder->setGeometry(_list->viewport()->rect());
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}
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}
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bool ListEditor::eventFilter(QObject *obj, QEvent *event)
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{
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if (obj == _list->viewport() && event->type() == QEvent::Resize &&
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_placeholder->isVisible()) {
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_placeholder->setGeometry(_list->viewport()->rect());
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}
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return QWidget::eventFilter(obj, event);
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}
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void ListEditor::showEvent(QShowEvent *e)
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{
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QWidget::showEvent(e);
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// This is necessary as the list viewport might not be updated yet while
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// the list was hidden.
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// Thus, previous calls to UpdateListSize() might not have resized the
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// widget correctly, for example due to not regarding the horizontal
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// scrollbar yet.
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UpdateListSize();
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}
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static QListWidgetItem *getItemFromWidget(QListWidget *list, QWidget *widget)
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{
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for (int i = 0; i < list->count(); i++) {
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auto item = list->item(i);
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if (!item) {
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continue;
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}
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auto itemWidget = list->itemWidget(item);
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if (itemWidget == widget) {
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return item;
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}
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}
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return nullptr;
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}
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int ListEditor::GetIndexOfSignal() const
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{
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auto sender = this->sender();
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if (!sender) {
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return -1;
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}
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auto widget = qobject_cast<QWidget *>(sender);
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if (!widget) {
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return -1;
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}
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return _list->row(getItemFromWidget(_list, widget));
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}
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void ListEditor::UpdateListSize()
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{
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SetHeightToContentHeight(_list);
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if (_list->count() == 0 && !_placeholder->text().isEmpty()) {
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auto height = _list->fontMetrics().height() * 3;
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_list->setMinimumHeight(height);
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_list->setMaximumHeight(height);
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}
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adjustSize();
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updateGeometry();
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}
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} // namespace advss
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