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// SPDX-License-Identifier: GPL-2.0
#include "statswidget.h"
#include "mainwindow.h"
#include "stats/statsview.h"
#include <QCheckBox>
#include <QPainter>
#include <QStyledItemDelegate>
class ChartItemDelegate : public QStyledItemDelegate {
private:
void paint(QPainter *painter, const QStyleOptionViewItem &option,
const QModelIndex &index) const override;
QSize sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const override;
};
// Number of pixels that non-toplevel items are indented
static int indent(const QFontMetrics &fm)
{
#if QT_VERSION < QT_VERSION_CHECK(5, 11, 0)
return 4 * fm.width('-');
#else
return 4 * fm.horizontalAdvance('-');
#endif
}
static const int iconSpace = 2; // Number of pixels between icon and text
static const int topSpace = 2; // Number of pixels above icon
void ChartItemDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
const QModelIndex &index) const
{
QFont font = index.data(Qt::FontRole).value<QFont>();
QFontMetrics fm(font);
QString name = index.data(ChartListModel::ChartNameRole).value<QString>();
painter->setFont(font);
QRect rect = option.rect;
if (option.state & QStyle::State_Selected) {
painter->save();
painter->setBrush(option.palette.highlight());
painter->setPen(Qt::NoPen);
painter->drawRect(rect);
painter->restore();
}
bool isHeader = index.data(ChartListModel::IsHeaderRole).value<bool>();
if (!isHeader)
rect.translate(indent(fm), 0);
QPixmap icon = index.data(ChartListModel::IconRole).value<QPixmap>();
if (!icon.isNull()) {
rect.translate(0, topSpace);
painter->drawPixmap(rect.topLeft(), icon);
rect.translate(icon.size().width() + iconSpace, (icon.size().height() - fm.height()) / 2);
}
painter->drawText(rect, name);
}
QSize ChartItemDelegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
{
QFont font = index.data(Qt::FontRole).value<QFont>();
QFontMetrics fm(font);
QString name = index.data(ChartListModel::ChartNameRole).value<QString>();
QSize iconSize = index.data(ChartListModel::IconSizeRole).value<QSize>();
QSize size = fm.size(Qt::TextSingleLine, name);
bool isHeader = index.data(ChartListModel::IsHeaderRole).value<bool>();
if (!isHeader)
size += QSize(indent(fm), 0);
if (iconSize.isValid())
size = QSize(size.width() + iconSize.width() + iconSpace,
std::max(size.height(), iconSize.height()) + 2 * topSpace);
return size;
}
static const QUrl urlStatsView = QUrl(QStringLiteral("qrc:/qml/statsview2.qml"));
StatsWidget::StatsWidget(QWidget *parent) : QWidget(parent)
{
ui.setupUi(this);
connect(ui.close, &QToolButton::clicked, this, &StatsWidget::closeStats);
ui.chartType->setModel(&charts);
connect(ui.chartType, QOverload<int>::of(&QComboBox::activated), this, &StatsWidget::chartTypeChanged);
connect(ui.var1, QOverload<int>::of(&QComboBox::activated), this, &StatsWidget::var1Changed);
connect(ui.var2, QOverload<int>::of(&QComboBox::activated), this, &StatsWidget::var2Changed);
connect(ui.var1Binner, QOverload<int>::of(&QComboBox::activated), this, &StatsWidget::var1BinnerChanged);
connect(ui.var2Binner, QOverload<int>::of(&QComboBox::activated), this, &StatsWidget::var2BinnerChanged);
connect(ui.var2Operation, QOverload<int>::of(&QComboBox::activated), this, &StatsWidget::var2OperationChanged);
ui.stats->setSource(urlStatsView);
ui.stats->setResizeMode(QQuickWidget::SizeRootObjectToView);
QQuickItem *root = ui.stats->rootObject();
view = qobject_cast<StatsView *>(root);
if (!view)
qWarning("Oops. The root of the StatsView is not a StatsView.");
}
// Initialize QComboBox with list of variables
static void setVariableList(QComboBox *combo, const StatsState::VariableList &list)
{
combo->clear();
combo->setEnabled(!list.variables.empty());
for (const StatsState::Variable &v: list.variables)
combo->addItem(v.name, QVariant(v.id));
combo->setCurrentIndex(list.selected);
}
// Initialize QComboBox and QLabel of binners. Hide if there are no binners.
static void setBinList(QComboBox *combo, const StatsState::BinnerList &list)
{
combo->clear();
combo->setEnabled(!list.binners.empty());
for (const QString &s: list.binners)
combo->addItem(s);
combo->setCurrentIndex(list.selected);
}
void StatsWidget::updateUi()
{
StatsState::UIState uiState = state.getUIState();
setVariableList(ui.var1, uiState.var1);
setVariableList(ui.var2, uiState.var2);
int pos = charts.update(uiState.charts);
ui.chartType->setCurrentIndex(pos);
ui.chartType->setItemDelegate(new ChartItemDelegate);
setBinList(ui.var1Binner, uiState.binners1);
setBinList(ui.var2Binner, uiState.binners2);
setVariableList(ui.var2Operation, uiState.operations2);
// Add checkboxes for additional features
features.clear();
for (const StatsState::Feature &f: uiState.features) {
features.emplace_back(new QCheckBox(f.name));
QCheckBox *check = features.back().get();
check->setChecked(f.selected);
int id = f.id;
connect(check, &QCheckBox::stateChanged, [this,id] (int state) { featureChanged(id, state); });
ui.features->addWidget(check);
}
if (view)
view->plot(state);
}
void StatsWidget::closeStats()
{
MainWindow::instance()->setApplicationState(ApplicationState::Default);
}
void StatsWidget::chartTypeChanged(int idx)
{
state.chartChanged(ui.chartType->itemData(idx).toInt());
updateUi();
}
void StatsWidget::var1Changed(int idx)
{
state.var1Changed(ui.var1->itemData(idx).toInt());
updateUi();
}
void StatsWidget::var2Changed(int idx)
{
state.var2Changed(ui.var2->itemData(idx).toInt());
updateUi();
}
void StatsWidget::var1BinnerChanged(int idx)
{
state.binner1Changed(idx);
updateUi();
}
void StatsWidget::var2BinnerChanged(int idx)
{
state.binner2Changed(idx);
updateUi();
}
void StatsWidget::var2OperationChanged(int idx)
{
state.var2OperationChanged(ui.var2Operation->itemData(idx).toInt());
updateUi();
}
void StatsWidget::featureChanged(int idx, bool status)
{
state.featureChanged(idx, status);
// No need for a full chart replot - just show/hide the features
if (view)
view->updateFeatures(state);
}
void StatsWidget::showEvent(QShowEvent *e)
{
updateUi();
QWidget::showEvent(e);
}
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