qt 6.5.1 original

tests/manual/widgets/itemviews/autoResizePrecision/treeview/testtree.cpp

@@ -0,0 +1,96 @@
+// Copyright (C) 2012 Thorbjørn Lund Martsum - tmartsum[at]gmail.com
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#include <QtWidgets/QtWidgets>
+
+class TreeDialog : public QDialog
+{
+    Q_OBJECT
+public:
+    TreeDialog() { create(); }
+protected:
+    void create()
+    {
+        resize(1000, 233);
+        gridLayout = new QGridLayout(this);
+        treeWidget = new QTreeWidget(this);
+
+        gridLayout->addWidget(treeWidget, 0, 0, 2, 1);
+        spinPrecision = new QSpinBox(this);
+        gridLayout->addWidget(spinPrecision, 0, 1, 1, 1);
+        verticalSpacer = new QSpacerItem(20, 20, QSizePolicy::Minimum, QSizePolicy::Expanding);
+        gridLayout->addItem(verticalSpacer, 1, 1, 1, 1);
+
+        QStringList itemInfo("Col1");
+        itemInfo.append("Col2");
+        itemInfo.append("Col3");
+        itemInfo.append("Dummy");
+        // Developer no. could also have been social security number og some other id.
+        treeWidget->setHeaderLabels(itemInfo);
+
+        QStringList sl1("This is Root Item");
+        sl1.append("i");
+        QTreeWidgetItem *rootitem = new QTreeWidgetItem(treeWidget, sl1);
+
+        QStringList sl2("This is Child1 Item");
+        sl2.append("WW");
+        QTreeWidgetItem *child1 = new QTreeWidgetItem(rootitem, sl2);
+
+        QString ii = QString::fromLatin1("ii");
+        QStringList is;
+        const int rowCount = 3000;
+        spinPrecision->setMinimum(-1);
+        spinPrecision->setMaximum(rowCount + 5);
+        for (int u = 0; u < rowCount; ++u) {
+            if (u % 25 == 0)
+                ii += QString::fromLatin1("i");
+            else
+                ii[ii.length() - 1] = QChar::fromLatin1('a' + (u  % 25));
+            ii[ii.length() - 2] = QChar::fromLatin1('i');
+            is.append(ii);
+        }
+
+        for (int u = 0; u < rowCount - 2; ++u) { // -2 since we have rootitem and child1
+            QString col1;
+            col1 = QString::fromLatin1("This is child item %1").arg(u + 2);
+
+            QStringList sl(col1);
+            sl.append(is[u]);
+            sl.append(is[rowCount - u - 1]);
+
+            if (u > 500)
+                new QTreeWidgetItem(rootitem, sl);
+            else
+                new QTreeWidgetItem(child1, sl);
+        }
+        treeWidget->header()->setSectionResizeMode(0, QHeaderView::ResizeToContents);
+        treeWidget->header()->setSectionResizeMode(1, QHeaderView::ResizeToContents);
+        treeWidget->header()->setSectionResizeMode(2, QHeaderView::ResizeToContents);
+        spinPrecision->setValue(treeWidget->header()->resizeContentsPrecision());
+        connect(spinPrecision, SIGNAL(valueChanged(int)), this, SLOT(slotValueChanged(int)));
+    } // setupUi
+protected slots:
+    void slotValueChanged(int newval);
+protected:
+    QGridLayout *gridLayout;
+    QTreeWidget *treeWidget;
+    QSpinBox *spinPrecision;
+    QSpacerItem *verticalSpacer;
+};
+
+void TreeDialog::slotValueChanged(int newval)
+{
+    treeWidget->header()->setResizeContentsPrecision(newval);
+    for (int u = 0; u < treeWidget->header()->count(); ++u)
+        treeWidget->resizeColumnToContents(u);
+}
+
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+    TreeDialog d1;
+    d1.show();
+    app.exec();
+}
+
+#include "testtree.moc"