Hello,
I have tried to make some sort with QTreeView. I have inherited QTreeView to
create a SortedTreeView. Then I've created a SortedListWidget class which
inherits QWidget class and which uses my SortedTreeView mapped to a
QStandardItemModel.
Then, if I directly run my SortedListWidget, and if I click on a line, do
some sort on colums, then my selected line is still correct.
However, if I run a QMainWindow in which my SortedListWidget is embedded,
and if I repeat the same actions, then my selected line is broken.
So my question is : why is it working directly with my SortedListWidget but
not if embedded in a QMainWindow?
(I'm using QtJambi 4.4.3_01)
Any help would be appreciated.
Vincent
Below test cases and code:
- Test cases:
Test 1:
1/ run SortedListWidget.main() : items are sorted in this order (A3 B3 C3 D3
for the 1st line, then A2 B2 C2 D2, and finally A1 B1 C1 D1)
2/ click on A3: the first line is selected (A3 B3 C3 D3)
3/ click on column C: the first line becomes the third one (A3 B3 C3 D3)
4/ click on C1: the first line is selected (A1 B1 C1 D1)
5/ click on column C: the first line becomes the third one (A1 B1 C1 D1)
=> it works fine !
Test 2:
1/ run MyMainWindow.main(): items are sorted in this order (A3 B3 C3 D3 for
the 1st line, then A2 B2 C2 D2, and finally A1 B1 C1 D1)
2/ click on A3: the first line is selected (A3 B3 C3 D3)
3/ click on column C: the first line becomes the third one (A3 B3 C3 D3)
4/ click on C1: the first line is selected (A1 B1 C1 D1)
5/ click on column C: the selected line is broken (A3 B1 C1 D3)
=> it doesn't work !
Here's my code:
--------- MyMainWindow -----------------
package org.workshop;
import com.trolltech.qt.gui.*;
public class MyMainWindow extends QMainWindow {
Ui_MyMainWindow ui = new Ui_MyMainWindow();
public static void main(String[] args) {
QApplication.initialize(args);
MyMainWindow testMyMainWindow = new MyMainWindow();
testMyMainWindow.show();
QApplication.exec();
}
public MyMainWindow() {
ui.setupUi(this);
}
public MyMainWindow(QWidget parent) {
super(parent);
ui.setupUi(this);
}
}
---------- Ui_MyMainWindow --------------
package org.workshop;
import com.trolltech.qt.core.*;
import com.trolltech.qt.gui.*;
import org.workshop.*;
public class Ui_MyMainWindow
{
public QWidget centralwidget;
public SortedListWidget sortedListWidget;
public QMenuBar menubar;
public QStatusBar statusbar;
public Ui_MyMainWindow() { super(); }
public void setupUi(QMainWindow MyMainWindow)
{
MyMainWindow.setObjectName("MyMainWindow");
MyMainWindow.resize(new QSize(496,
293).expandedTo(MyMainWindow.minimumSizeHint()));
centralwidget = new QWidget(MyMainWindow);
centralwidget.setObjectName("centralwidget");
sortedListWidget = new SortedListWidget(centralwidget);
sortedListWidget.setObjectName("sortedListWidget");
sortedListWidget.setGeometry(new QRect(10, 10, 441, 261));
MyMainWindow.setCentralWidget(centralwidget);
menubar = new QMenuBar(MyMainWindow);
menubar.setObjectName("menubar");
menubar.setGeometry(new QRect(0, 0, 496, 22));
MyMainWindow.setMenuBar(menubar);
statusbar = new QStatusBar(MyMainWindow);
statusbar.setObjectName("statusbar");
MyMainWindow.setStatusBar(statusbar);
retranslateUi(MyMainWindow);
MyMainWindow.connectSlotsByName();
} // setupUi
void retranslateUi(QMainWindow MyMainWindow)
{
MyMainWindow.setWindowTitle(com.trolltech.qt.core.QCoreApplication.translate("MyMainWindow",
"MainWindow"));
} // retranslateUi
}
--------- SortedListWidget ------------
package org.workshop;
import com.trolltech.qt.core.Qt.Orientation;
import com.trolltech.qt.gui.QApplication;
import com.trolltech.qt.gui.QStandardItemModel;
import com.trolltech.qt.gui.QWidget;
public class SortedListWidget extends QWidget {
Ui_SortedListWidget ui = new Ui_SortedListWidget();
private QStandardItemModel model = null;
public static void main(String[] args) {
QApplication.initialize(args);
SortedListWidget testSortedListWidget = new SortedListWidget();
testSortedListWidget.show();
QApplication.exec();
}
public SortedListWidget() {
init();
}
public SortedListWidget(QWidget parent) {
super(parent);
init();
}
private void init(){
ui.setupUi(this);
model = createTransactionModel();
populateModel();
ui.sortedTreeView.setModel(model);
ui.sortedTreeView.header().sectionClicked.connect(ui.sortedTreeView,
"doSort(java.lang.Integer)");
}
private QStandardItemModel createTransactionModel(){
QStandardItemModel model = new QStandardItemModel(0, 4);
model.setHeaderData(0, Orientation.Horizontal, tr("A"));
model.setHeaderData(1, Orientation.Horizontal, tr("B"));
model.setHeaderData(2, Orientation.Horizontal, tr("C"));
model.setHeaderData(3, Orientation.Horizontal, tr("D"));
return model;
}
private void populateModel(){
addLine("A1", "B1", "C1", "D1");
addLine("A2", "B2", "C2", "D2");
addLine("A3", "B3", "C3", "D3");
}
protected void addLine(String dataA, String dataB, String dataC, String
dataD){
int lastline = model.rowCount();
model.insertRow(lastline);
model.setData(model.index(lastline, 0), dataA);
model.setData(model.index(lastline, 1), dataB);
model.setData(model.index(lastline, 2), dataC);
model.setData(model.index(lastline, 3), dataD);
}
}
---------- Ui_SortedListWidget ---------------
package org.workshop;
import com.trolltech.qt.core.*;
import com.trolltech.qt.gui.*;
import org.workshop.*;
public class Ui_SortedListWidget
{
public SortedTreeView sortedTreeView;
public Ui_SortedListWidget() { super(); }
public void setupUi(QWidget SortedListWidget)
{
SortedListWidget.setObjectName("SortedListWidget");
SortedListWidget.resize(new QSize(400,
300).expandedTo(SortedListWidget.minimumSizeHint()));
sortedTreeView = new SortedTreeView(SortedListWidget);
sortedTreeView.setObjectName("sortedTreeView");
sortedTreeView.setGeometry(new QRect(20, 30, 341, 192));
sortedTreeView.setSortingEnabled(true);
retranslateUi(SortedListWidget);
SortedListWidget.connectSlotsByName();
} // setupUi
void retranslateUi(QWidget SortedListWidget)
{
SortedListWidget.setWindowTitle(com.trolltech.qt.core.QCoreApplication.translate("SortedListWidget",
"Form"));
} // retranslateUi
}
---------- SortedTreeView --------------
package org.workshop;
import com.trolltech.qt.core.Qt.SortOrder;
import com.trolltech.qt.gui.QTreeView;
import com.trolltech.qt.gui.QWidget;
public class SortedTreeView extends QTreeView {
private SortOrder currentSortOrder = SortOrder.AscendingOrder;
public SortedTreeView() {
super();
}
public SortedTreeView(QWidget parent) {
super(parent);
}
public void doSort(Integer column){
if (column >= 0) {
sortByColumn(column, currentSortOrder);
changeSortOrder();
}
}
private void changeSortOrder(){
if (currentSortOrder.equals(SortOrder.AscendingOrder)) {
currentSortOrder = SortOrder.DescendingOrder;
}else{
currentSortOrder = SortOrder.AscendingOrder;
}
}
}
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