Thanks guys! This works!
File: main.qml
import QtQuick 2.2
import QtGraphicalEffects 1.0
import QtQuick.Controls 1.4
import QtQuick.Controls.Styles 1.4
import QtQuick.Dialogs 1.0
import QtQuick.Extras 1.4
import QtQuick.Layouts 1.0
import QtQuick.Window 2.1
Rectangle {
id: rectangle
color: "red"
width: 200
height: 200
Tumbler {
objectName: "lat"
// latitude degrees -180 to +180
TumblerColumn {
model: ListModel {
Component.onCompleted: {
for (var i = -180; i <= 180; ++i) {
append({value: i.toString()});
}
}
}
}
// latitude minutes 0 - 59
TumblerColumn {
model: 60
}
// latitude seconds 0 - 59
TumblerColumn {
model: 60
}
}
}
I am a total QML newbie. I am currently copying QML source without
understanding it, modify, then run and view results.
I am using the Qt 5.5 Tumbler from
http://doc.qt.io/qt-5/qml-qtquick-extras-tumbler.html
I can set and get column indexes from C++ when I press a widget button.
void MainWindow::on_pushButtonSet_clicked()
{
QObject *objectRectangle = m_view->rootObject();
QObject *objectLatitude = objectRectangle->findChild<QObject*>("lat");
if (0 != objectLatitude)
{
// void setCurrentIndexAt(int columnIndex, int itemIndex)
for(int col = 0; col < 3; ++col)
{
QVariant columnIndex(col);
QMetaObject::invokeMethod(objectLatitude, "setCurrentIndexAt",
Q_ARG(QVariant, columnIndex),
Q_ARG(QVariant, 0));
}
}
}
void MainWindow::on_pushButtonGet_clicked()
{
QObject *objectRectangle = m_view->rootObject();
QObject *objectLatitude = objectRectangle->findChild<QObject*>("lat");
if (0 != objectLatitude)
{
// int currentIndexAt(int columnIndex)
for(int col = 0; col < 3; ++col)
{
QVariant returnedValue;
QVariant columnIndex(col);
QMetaObject::invokeMethod(objectLatitude, "currentIndexAt",
Q_RETURN_ARG(QVariant, returnedValue),
Q_ARG(QVariant, columnIndex));
qDebug() << "returnedValue: " << returnedValue.toString();
}
}
}
It works well on OS X except no-repaint issues when resizing mainwindow.
It does not display so well on Android and iOS devices. I will look at some of
the Qt examples and hope to learn more. At this point C++ to QML interop seems
to do what I need.
Thanks! QML is starting to look less intimidating and more usable.
-Ed
OS X
[cid:F664C66A-76C1-467A-8EFD-F6F1E9C6CCBC@ditchwitch.cmw.internal]
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
connect(ui->pushButton, SIGNAL(clicked()), qApp, SLOT(quit()));
m_view = new QQuickView();
QWidget *container = QWidget::createWindowContainer(m_view, this);
container->setMinimumSize(200, 200);
container->setMaximumSize(400, 400);
container->setFocusPolicy(Qt::TabFocus);
m_view->setSource(QUrl("qrc:/res/files/main.qml"));
ui->frame->layout()->addWidget(container);
QObject *objectRectangle = m_view->rootObject();
QVariant color = objectRectangle->property("color");
qDebug() << "color: " << color.toString();
objectRectangle->setProperty("color", "blue");
}
On Nov 4, 2015, at 9:17 AM, Jason H <jh...@gmx.com<mailto:jh...@gmx.com>> wrote:
You can just programmaticaly make a model.
Here is real code to make a list of 1 to 31 days for a date picker:
ListModel {
id: dayModel
}
//--- in Component.onCompleted: {
for (var i=1; i<32; i++)
dayModel.append({value: i, name: ''+i});
//--- }
Sent: Wednesday, November 04, 2015 at 9:53 AM
From: "Edward Sutton"
<edward.sut...@subsite.com<mailto:edward.sut...@subsite.com>>
To: "Qt Interest" <interest@qt-project.org<mailto:interest@qt-project.org>>
Subject: [Interest] Can QML model specify a range including negative numbers?
For example -180 to +180 ?
Is there a way to declare a QML model range from -180 to +180?
A method that does not require typing 361 numbers model: [-180, -179, … 0, …
179, 180 ] ?
I added a Tumbler to Combining Qt Widgets and QML with
QWidget::createWindowContainer()<http://www.ics.com/blog/combining-qt-widgets-and-qml-qwidgetcreatewindowcontainer>
to experiment with making QML readable and writable from C++.
Tumbler {
// latitude degrees -180 to +180
TumblerColumn {
model: 181 // <- Is there a way to declare model range -180 to +180 ?
}
// latitude minutes 0 - 59
TumblerColumn {
model: 60
}
// latitude seconds 0 - 59
TumblerColumn {
model: 60
}
}
Thanks in advance,
-Ed
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