[SailfishDevel] Accessing C++ properties from QML
Hi all, i need to access a property of a C++ Class, declared inside another
class, from QML.
This is the principal class:
#ifndef MANAGER_H
#define MANAGER_H
#include QObject
#include QTextStream
#include QFile
#include monster.h
#include move.h
#include turnmanager.h
class Manager : public QObject
{
Q_OBJECT
public:
explicit Manager(QObject *parent = 0);
int activeId;
QString activeString;
int enemyId;
Monster active;
Monster enemy;
Move activeMove;
Move enemyMove;
Q_INVOKABLE void saveActive();
Q_INVOKABLE void fetchMonster( const int level );
Q_INVOKABLE void assignMoves(Monster monster );
Q_INVOKABLE void setMove( Move move, const int id );
signals:
void fetchMonsterDone();
public slots:
};
#endif // MANAGER_H
this is the Monster Class:
#ifndef MONSTER_H
#define MONSTER_H
#include QObject
#include QString
#include math.h
#include move.h
class Monster : public QObject
{
Q_OBJECT
public:
explicit Monster(QObject *parent = 0);
...
QString name;
...
};
#endif // MONSTER_H
in my qml page i include the class properly and i have something like this:
Page {
id: page
Manager {
id: manager
onFetchMonsterDone: {
console.log(Fetch done)
}
}
Label {
id: label
}
}
after doing some operations with fetchMonster(), the active class has
been assigned some values to its properties, i need to access these values
from QML in the onFetchMonsterDone, let's say i need to assign to
label.text the value of manager.active.name
OR
i read there are some ways to access end edit QML properties from C++
Can someone help me?
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Re: [SailfishDevel] Accessing C++ properties from QML
Hi,
try having a look at this
http://doc.qt.io/qt-5/qtqml-cppintegration-interactqmlfromcpp.html
2015-08-13 14:14 GMT+01:00 Antonio Mancini ziobill...@gmail.com:
Hi all, i need to access a property of a C++ Class, declared inside
another class, from QML.
This is the principal class:
#ifndef MANAGER_H
#define MANAGER_H
#include QObject
#include QTextStream
#include QFile
#include monster.h
#include move.h
#include turnmanager.h
class Manager : public QObject
{
Q_OBJECT
public:
explicit Manager(QObject *parent = 0);
int activeId;
QString activeString;
int enemyId;
Monster active;
Monster enemy;
Move activeMove;
Move enemyMove;
Q_INVOKABLE void saveActive();
Q_INVOKABLE void fetchMonster( const int level );
Q_INVOKABLE void assignMoves(Monster monster );
Q_INVOKABLE void setMove( Move move, const int id );
signals:
void fetchMonsterDone();
public slots:
};
#endif // MANAGER_H
this is the Monster Class:
#ifndef MONSTER_H
#define MONSTER_H
#include QObject
#include QString
#include math.h
#include move.h
class Monster : public QObject
{
Q_OBJECT
public:
explicit Monster(QObject *parent = 0);
...
QString name;
...
};
#endif // MONSTER_H
in my qml page i include the class properly and i have something like this:
Page {
id: page
Manager {
id: manager
onFetchMonsterDone: {
console.log(Fetch done)
}
}
Label {
id: label
}
}
after doing some operations with fetchMonster(), the active class has
been assigned some values to its properties, i need to access these values
from QML in the onFetchMonsterDone, let's say i need to assign to
label.text the value of manager.active.name
OR
i read there are some ways to access end edit QML properties from C++
Can someone help me?
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Re: [SailfishDevel] Accessing C++ properties from QML
for properties system you should use Q_PROPERTY macro inside your class.
-- Исходное сообщение --
От: Antonio Mancini ziobill...@gmail.com
Кому: Sailfish OS Developers devel@lists.sailfishos.org
Отправлено: 13.08.2015 18:14:29
Тема: [SailfishDevel] Accessing C++ properties from QML
Hi all, i need to access a property of a C++ Class, declared inside
another class, from QML.
This is the principal class:
#ifndef MANAGER_H
#define MANAGER_H
#include QObject
#include QTextStream
#include QFile
#include monster.h
#include move.h
#include turnmanager.h
class Manager : public QObject
{
Q_OBJECT
public:
explicit Manager(QObject *parent = 0);
int activeId;
QString activeString;
int enemyId;
Monster active;
Monster enemy;
Move activeMove;
Move enemyMove;
Q_INVOKABLE void saveActive();
Q_INVOKABLE void fetchMonster( const int level );
Q_INVOKABLE void assignMoves(Monster monster );
Q_INVOKABLE void setMove( Move move, const int id );
signals:
void fetchMonsterDone();
public slots:
};
#endif // MANAGER_H
this is the Monster Class:
#ifndef MONSTER_H
#define MONSTER_H
#include QObject
#include QString
#include math.h
#include move.h
class Monster : public QObject
{
Q_OBJECT
public:
explicit Monster(QObject *parent = 0);
...
QString name;
...
};
#endif // MONSTER_H
in my qml page i include the class properly and i have something like
this:
Page {
id: page
Manager {
id: manager
onFetchMonsterDone: {
console.log(Fetch done)
}
}
Label {
id: label
}
}
after doing some operations with fetchMonster(), the active class has
been assigned some values to its properties, i need to access these
values from QML in the onFetchMonsterDone, let's say i need to assign
to label.text the value of manager.active.name
OR
i read there are some ways to access end edit QML properties from C++
Can someone help me?___
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Re: [SailfishDevel] Accessing C++ properties from QML
Thanks, actually i had already seen that but couldn't accomplish much, now
i tried again and i managed to access and edit qml properties, but the QML
object doesn't update.
i use this code in a c++ method
QQmlEngine engine;
QQmlComponent component (engine,
/usr/share/harbour-pocketmonsters/qml/pages/FirstPage.qml);
QObject *object = component.create();
QObject *label = object-findChildQObject*(label);
cout label-property(text).toString();
if (label)
label-setProperty(text, active.name);
cout label-property(text).toString();
the output of cout is correct, but the label doesn't update
The console shows these errors, but i think they are irrelevant since the
output is correct
[W] unknown:108 - file:///usr/lib/qt5/qml/Sailfish/Silica/Page.qml:108:
ReferenceError: __silica_applicationwindow_instance is not defined
[W] unknown:94 - file:///usr/lib/qt5/qml/Sailfish/Silica/Page.qml:94:
ReferenceError: __silica_applicationwindow_instance is not defined
[W] unknown:178 - file:///usr/lib/qt5/qml/Sailfish/Silica/Page.qml:178:
ReferenceError: __silica_applicationwindow_instance is not defined
[W] unknown:331 -
file:///usr/lib/qt5/qml/Sailfish/Silica/private/PulleyMenuBase.qml:331:
ReferenceError: __silica_applicationwindow_instance is not defined
2015-08-13 15:17 GMT+02:00 Andrea Bernabei and.berna...@gmail.com:
Hi,
try having a look at this
http://doc.qt.io/qt-5/qtqml-cppintegration-interactqmlfromcpp.html
2015-08-13 14:14 GMT+01:00 Antonio Mancini ziobill...@gmail.com:
Hi all, i need to access a property of a C++ Class, declared inside
another class, from QML.
This is the principal class:
#ifndef MANAGER_H
#define MANAGER_H
#include QObject
#include QTextStream
#include QFile
#include monster.h
#include move.h
#include turnmanager.h
class Manager : public QObject
{
Q_OBJECT
public:
explicit Manager(QObject *parent = 0);
int activeId;
QString activeString;
int enemyId;
Monster active;
Monster enemy;
Move activeMove;
Move enemyMove;
Q_INVOKABLE void saveActive();
Q_INVOKABLE void fetchMonster( const int level );
Q_INVOKABLE void assignMoves(Monster monster );
Q_INVOKABLE void setMove( Move move, const int id );
signals:
void fetchMonsterDone();
public slots:
};
#endif // MANAGER_H
this is the Monster Class:
#ifndef MONSTER_H
#define MONSTER_H
#include QObject
#include QString
#include math.h
#include move.h
class Monster : public QObject
{
Q_OBJECT
public:
explicit Monster(QObject *parent = 0);
...
QString name;
...
};
#endif // MONSTER_H
in my qml page i include the class properly and i have something like
this:
Page {
id: page
Manager {
id: manager
onFetchMonsterDone: {
console.log(Fetch done)
}
}
Label {
id: label
}
}
after doing some operations with fetchMonster(), the active class has
been assigned some values to its properties, i need to access these values
from QML in the onFetchMonsterDone, let's say i need to assign to
label.text the value of manager.active.name
OR
i read there are some ways to access end edit QML properties from C++
Can someone help me?
___
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To unsubscribe, please send a mail to
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___
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To unsubscribe, please send a mail to
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Re: [SailfishDevel] Accessing C++ properties from QML
for properties system you should use Q_PROPERTY macro inside your class.
Since i have to access properties of a class declared inside another class
i find using the macro Q_PROPERTY a little confusing.
Actually, I think you're creating a new instance of the FirstPage.qml
component using this code. But, Sailfish should have already created its
own instance of that page when it started up.
You might instead try retrieving a view of the Sailfish instance and going
from there, something like this:
QQuickView *view = SailfishApp::createView();
QObject *object = view-rootObject();
QObject *label = object-findChildQObject *(label);
--John
I tried this, it compiles, after including sailfishapp.h and
QQuickItem, but now there's no output, as it can't find the proper object
or the SailfishApp::createView() creates a new, empty view
The code is this:
...
QQuickView *view = SailfishApp::createView();
QObject *object = view-rootObject();
QObject *label = object-findChildQObject*(label);
QQmlProperty property(label, text);
cout Read before: property.read().toString() endl;
if (label) {
cout true;
property.write(active.name);
} else
cout false endl;
cout Read after:property.read().toString() endl;
fetchMonsterDone();
...
the output is:
Read before:
false
Read after:
[D] onFetchMonsterDone:51 - Fetch done
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Re: [SailfishDevel] Sending SMS via Telepathy: Error Channel Dispatcher .. does not support interface CD.I.Messages
Hi All
I now have a working work-around: My app can (finally) send SMSes via
Telepathy again.
Previously I was using ContactMessenger object. Now I have found a
vector using the ConversationChannel object. It took a lot of hacking
around due to my weak understanding of c++, but in the end I hit on a
solution that required minimal change to both my code, and to
ConversationChannel.
I grabbed the code below:
https://github.com/nemomobile/nemo-qml-plugin-messages/blob/master/src/conversationchannel.h
https://github.com/nemomobile/nemo-qml-plugin-messages/blob/master/src/conversationchannel.cpp
then pimped it slightly so it that on a successful sendMessage, it emits
the signal finished
Previously, using ContactMessenger my code was
void TelepathyHelper::sendSMS(const QString contactIdentifier, const
QString message)
{
Tp::AccountPtr acc =
Tp::Account::create(TP_QT_ACCOUNT_MANAGER_BUS_NAME,
QLatin1String(/org/freedesktop/Telepathy/Account/ring/tel/account0));
messenger = Tp::ContactMessenger::create(acc, contactIdentifier);
connect(messenger-sendMessage(message),
SIGNAL(finished(Tp::PendingOperation*)),
SLOT(onSendMessageFinished(Tp::PendingOperation*)));
}
Now (temporarily) using ConversationChannel my code is:
void TelepathyHelper::sendSMS(const QString contactIdentifier, const
QString message)
{
ConversationChannel *conversationChannel = new
ConversationChannel(/org/freedesktop/Telepathy/Account/ring/tel/account0,
contactIdentifier);
connect(conversationChannel,
SIGNAL(finished(Tp::PendingOperation*)),
SLOT(onSendMessageFinished(Tp::PendingOperation*)));
//this works! SMS is sent yippeee !!!
conversationChannel-sendMessage(message);
}
Cheers
Chris
Am 2015-08-12 14:26, schrieb christopher.l...@thurweb.ch:
Hi Matt
.
My main focus now is finding a code approach that works with the
current installed packages. I think I have found a vector, but need to
do some more coding to know for sure.
.
Thanks
Chris
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Re: [SailfishDevel] Accessing C++ properties from QML
You can try to use signals and slots like this:
Header
class // ...
{
// ...
signals:
void somethingWasDone();
//
}
Source
// ...
someMethod() {
// Do something
emit somethingWasDone();
}
// ...
QML
// ...
Connections {
target: // Your module
onSomethingWasDone: // Change properties
}
// ...
More about this you can see at the video:
https://www.youtube.com/watch?v=R59lpwNy9WE
Regards,
Petr
[Linux User Group Udmurtia](https://udmlug.wordpress.com/)
Original Message
Subject: Re: [SailfishDevel] Accessing C++ properties from QML
Time (UTC): August 13 2015 5:26 pm
From: ziobill...@gmail.com
To: devel@lists.sailfishos.org
CC:
for properties system you should use Q_PROPERTY macro inside your class.
Since i have to access properties of a class declared inside another class i
find using the macro Q_PROPERTY a little confusing.
Actually, I think you're creating a new instance of the FirstPage.qml component
using this code. But, Sailfish should have already created its own instance of
that page when it started up.
You might instead try retrieving a view of the Sailfish instance and going from
there, something like this:
QQuickView *view = SailfishApp::createView();
QObject *object = view-rootObject();
QObject *label = object-findChildQObject *(label);
--John
I tried this, it compiles, after including sailfishapp.h and QQuickItem,
but now there's no output, as it can't find the proper object or the
SailfishApp::createView() creates a new, empty view
The code is this:
...
QQuickView *view = SailfishApp::createView();
QObject *object = view-rootObject();
QObject *label = object-findChildQObject*(label);
QQmlProperty property(label, text);
cout Read before: property.read().toString() endl;
if (label) {
cout true;
property.write(active.name);
} else
cout false endl;
cout Read after: property.read().toString() endl;
fetchMonsterDone();
...
the output is:
Read before:
false
Read after:
[D] onFetchMonsterDone:51 - Fetch done___
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Re: [SailfishDevel] Accessing C++ properties from QML
Actually, I think you're creating a new instance of the FirstPage.qml
component using this code. But, Sailfish should have already created
its own instance of that page when it started up.
You might instead try retrieving a view of the Sailfish instance and
going from there, something like this:
QQuickView *view = SailfishApp::createView();
QObject *object = view-rootObject();
QObject *label = object-findChildQObject *(label);
--John
On 8/13/15 10:51 AM, Antonio Mancini wrote:
Thanks, actually i had already seen that but couldn't accomplish much,
now i tried again and i managed to access and edit qml properties, but
the QML object doesn't update.
i use this code in a c++ method
QQmlEngine engine;
QQmlComponent component (engine,
/usr/share/harbour-pocketmonsters/qml/pages/FirstPage.qml);
QObject *object = component.create();
QObject *label = object-findChildQObject*(label);
cout label-property(text).toString();
if (label)
label-setProperty(text, active.name http://active.name);
cout label-property(text).toString();
the output of cout is correct, but the label doesn't update
The console shows these errors, but i think they are irrelevant since
the output is correct
[W] unknown:108 -
file:///usr/lib/qt5/qml/Sailfish/Silica/Page.qml:108:
ReferenceError: __silica_applicationwindow_instance is not defined
[W] unknown:94 -
file:///usr/lib/qt5/qml/Sailfish/Silica/Page.qml:94:
ReferenceError: __silica_applicationwindow_instance is not defined
[W] unknown:178 -
file:///usr/lib/qt5/qml/Sailfish/Silica/Page.qml:178:
ReferenceError: __silica_applicationwindow_instance is not defined
[W] unknown:331 -
file:///usr/lib/qt5/qml/Sailfish/Silica/private/PulleyMenuBase.qml:331:
ReferenceError: __silica_applicationwindow_instance is not defined
2015-08-13 15:17 GMT+02:00 Andrea Bernabei and.berna...@gmail.com
mailto:and.berna...@gmail.com:
Hi,
try having a look at this
http://doc.qt.io/qt-5/qtqml-cppintegration-interactqmlfromcpp.html
2015-08-13 14:14 GMT+01:00 Antonio Mancini ziobill...@gmail.com
mailto:ziobill...@gmail.com:
Hi all, i need to access a property of a C++ Class, declared
inside another class, from QML.
This is the principal class:
#ifndef MANAGER_H
#define MANAGER_H
#include QObject
#include QTextStream
#include QFile
#include monster.h
#include move.h
#include turnmanager.h
class Manager : public QObject
{
Q_OBJECT
public:
explicit Manager(QObject *parent = 0);
int activeId;
QString activeString;
int enemyId;
Monster active;
Monster enemy;
Move activeMove;
Move enemyMove;
Q_INVOKABLE void saveActive();
Q_INVOKABLE void fetchMonster( const int level );
Q_INVOKABLE void assignMoves(Monster monster );
Q_INVOKABLE void setMove( Move move, const int id );
signals:
void fetchMonsterDone();
public slots:
};
#endif // MANAGER_H
this is the Monster Class:
#ifndef MONSTER_H
#define MONSTER_H
#include QObject
#include QString
#include math.h
#include move.h
class Monster : public QObject
{
Q_OBJECT
public:
explicit Monster(QObject *parent = 0);
...
QString name;
...
};
#endif // MONSTER_H
in my qml page i include the class properly and i have
something like this:
Page {
id: page
Manager {
id: manager
onFetchMonsterDone: {
console.log(Fetch done)
}
}
Label {
id: label
}
}
after doing some operations with fetchMonster(), the active
class has been assigned some values to its properties, i need
to access these values from QML in the onFetchMonsterDone,
let's say i need to assign to label.text the value of
manager.active.name http://manager.active.name
OR
i read there are some ways to access end edit QML properties
from C++
Can someone help me?
___
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