[Interest] Why int for size() of containers instead of quint32?
Hello. I see that Qt uses int type many times in containers implementations? Why? Why do you not use your own quint32? Why do you using signed and platform dependent type for this purpose? Best regards, Nick ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] How to reset QML WebView?
Looks. Here is the simplest code: https://www.dropbox.com/s/ctdcgrk0eqgq3a3/webview_test.tar.gz When you start this app you will see white window. Click on window and you will see browser with Twitter. Click again and browser will be hide and destroyed. So, please login to Twitter, than destroy browser by clicking first window and then create it again by clicking on first window. You will see that you left signed in. But I need that browser every time opens without signed user (even if user checked Remember me checkbox). How to do this? How to reset browser to the initial state? 2014-06-03 17:55 GMT+03:00 Jan Kundrát j...@flaska.net: On Monday, 2 June 2014 19:59:11 CEST, Николай Шатохин wrote: if(_socialWindow == NULL) Please note that identifiers that start with an underscore are reserved in C++. You are not supposed to use them for your own purposes in your code. _socialWindow-setSource(QUrl(source)); // source is a patch to QML file How does that QML file look like? And clearing cookies manually _socialWindow-engine()-networkAccessManager()-cookieJar()-setCookieJar(new QNetworkCookieJar()); This is Qt5, and in Qt5, the QML WebView does not use the QNetworkAccessManager for network IO anymore. The QNAM you access here is only used for the QML engine's own purposes when it fetches QML files over the network. It has absolutely no effect on how QtWebKit (and the QML WebView) accesses web pages. _socialWindow-engine()-clearComponentCache(); QML component cache has nothing to do with WebView's webkit cache. You should follow the advice given by Olivier Tilloy. If the private browsing mode really doesn't work, there's quite some breakage. With kind regards, Jan -- Trojitá, a fast Qt IMAP e-mail client -- http://trojita.flaska.net/ ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] How to reset QML WebView?
Is it safe to use experimental functions in production? 2014-06-03 19:10 GMT+03:00 Jan Kundrát j...@flaska.net: On Tuesday, 3 June 2014 18:03:32 CEST, Николай Шатохин wrote: When you start this app you will see white window. Click on window and you will see browser with Twitter. Click again and browser will be hide and destroyed. As Olivier already told you, activate the private browsing mode. You can only do this from the QML side, *not* from the C++ side. The QML code example you link to just instantiates the stock QML WebView, but does not make any attempt at activating its private browsing mode. With kind regards, Jan -- Trojitá, a fast Qt IMAP e-mail client -- http://trojita.flaska.net/ ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] How to reset QML WebView?
I just tried it. Not working. 2014-06-03 19:10 GMT+03:00 Jan Kundrát j...@flaska.net: On Tuesday, 3 June 2014 18:03:32 CEST, Николай Шатохин wrote: When you start this app you will see white window. Click on window and you will see browser with Twitter. Click again and browser will be hide and destroyed. As Olivier already told you, activate the private browsing mode. You can only do this from the QML side, *not* from the C++ side. The QML code example you link to just instantiates the stock QML WebView, but does not make any attempt at activating its private browsing mode. With kind regards, Jan -- Trojitá, a fast Qt IMAP e-mail client -- http://trojita.flaska.net/ ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] How to reset QML WebView?
import QtQuick 2.0
import QtWebKit 3.0
import QtWebKit.experimental 1.0
Item {
width: 640
height: 480
signal closeWindow();
WebView
{
anchors.fill: parent
url: address
experimental.preferences.privateBrowsingEnabled: true
}
}
2014-06-03 19:27 GMT+03:00 Николай Шатохин n.shatok...@gmail.com:
I just tried it. Not working.
2014-06-03 19:10 GMT+03:00 Jan Kundrát j...@flaska.net:
On Tuesday, 3 June 2014 18:03:32 CEST, Николай Шатохин wrote:
When you start this app you will see white window. Click on window and
you
will see browser with Twitter. Click again and browser will be hide and
destroyed.
As Olivier already told you, activate the private browsing mode. You can
only do this from the QML side, *not* from the C++ side.
The QML code example you link to just instantiates the stock QML WebView,
but does not make any attempt at activating its private browsing mode.
With kind regards,
Jan
--
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[Interest] How to reset QML WebView?
Hello.
I have a web browser's window maked by QML from WebView.
And in C++ I create window:
if(_socialWindow == NULL)
{
_socialWindow= new QQuickView();
_socialWindow-setFlags(Qt::Tool);
_socialWindow-setResizeMode(QQuickView::SizeRootObjectToView);
_socialWindow-setMinimumWidth(640);
_socialWindow-setMinimumHeight(300);
}
_socialWindow-engine()-clearComponentCache();
_socialWindow-setSource(QUrl(source)); // source is a patch to QML file
then I post to twitter and then I destroy window:
if(_socialWindow != NULL)
{
_socialWindow-deleteLater();
_socialWindow = NULL;
}
First time all is OK: I authorize and share. But second time browser opens
with logged user. How to clear window? Why did it not reset after delete
and create new?
Best regards,
Nick
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Re: [Interest] [Ubuntu-phone] How to reset QML WebView?
You didn't understand. It's not Android. It's Qt and QML
2014-06-03 0:24 GMT+03:00 Olivier Tilloy olivier.til...@canonical.com:
On Mon, Jun 2, 2014 at 7:59 PM, Николай Шатохин n.shatok...@gmail.com
wrote:
Hello.
I have a web browser's window maked by QML from WebView.
And in C++ I create window:
if(_socialWindow == NULL)
{
_socialWindow= new QQuickView();
_socialWindow-setFlags(Qt::Tool);
_socialWindow-setResizeMode(QQuickView::SizeRootObjectToView);
_socialWindow-setMinimumWidth(640);
_socialWindow-setMinimumHeight(300);
}
_socialWindow-engine()-clearComponentCache();
_socialWindow-setSource(QUrl(source)); // source is a patch to QML file
then I post to twitter and then I destroy window:
if(_socialWindow != NULL)
{
_socialWindow-deleteLater();
_socialWindow = NULL;
}
First time all is OK: I authorize and share. But second time browser
opens with logged user. How to clear window? Why did it not reset after
delete and create new?
Hi Николай,
I think what you’re seeing is the session cookie for whatever social
service you’re logging into being persisted to disk, so the second time you
instantiate the WebView the cookie is being picked up and the user is
automatically logged in.
I assume you’re using QtWebKit’s WebView. If so, you might want to try
setting experimental.preferences.privateBrowsingEnabled to true on your
WebView instance.
I hope this helps.
Olivier
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Re: [Interest] [Ubuntu-phone] How to reset QML WebView?
No, it doesn't help too :(
And clearing cookies manually
_socialWindow-engine()-networkAccessManager()-cookieJar()-setCookieJar(new
QNetworkCookieJar());
or cache
_socialWindow-engine()-clearComponentCache();
not solve the problem.
It looks like that QML file saves it state and lives between different
instances of QQuickView. How to reset it to initial state after creating
new QQuickView?
2014-06-03 0:44 GMT+03:00 Olivier Tilloy olivier.til...@canonical.com:
On Mon, Jun 2, 2014 at 11:32 PM, Николай Шатохин n.shatok...@gmail.com
wrote:
You didn't understand. It's not Android. It's Qt and QML
I think I understood, and I don’t think I mentioned Android anywhere (by
the way Qt and QML also run on android, they’re not mutually exclusive
technologies).
I was suggesting you try something like that with your QML webview:
import QtQuick 2.0
import QtWebKit 3.1
import QtWebKit.experimental 1.0
WebView {
experimental.preferences.privateBrowsingEnabled: true
}
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Re: [Interest] Qt for NaCl port
You can be interested in QmlWeb https://gitorious.org/qmlweb/pages/Home 2014-05-08 22:54 GMT+03:00 Daiwei Li daiwe...@gmail.com: Hello, I'm investigating porting an existing C++/QML application to Google NaCl, and I found that Qt had attempted a port a couple years ago: http://qt-project.org/wiki/Qt_for_Google_Native_Client. From what I've found online, it looks like it's unsupported and no longer works with the latest Qt and NaCl toolchain. I'm currently only looking into porting what's necessary for getting the QML engine/renderer running. Can anyone familiar with NaCl think of any showstoppers for this subset of Qt functionality? It looks like NaCl has an implementation of OpenGLES2, and worst case, if it doesn't support JIT, V4 has an interpreter option. Does anyone have experience with the Qt for NaCl project? Any tips/advice/considerations on attempting such a port? Thanks, Daiwei ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
[Interest] Qt laptop stickers
Hello. Does anyone have a Qt laptop stickers? Can you sell me some? Best regards, Nick ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
[Interest] Qt widgets: widgets appears without backgound
If I show widget inside other widget, it appears with transparent background. How to disable this? Best regards, Nick ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
[Interest] Hackathon at Kiev (Ukraine)
Hello. We will organize coding Hackathon at Kiev in January. We invite you to participate it. The exact date and location will be announced later. We organized over 15 Hackathons at few Ukrainian cities. Each Hackathon attracted about one hundred highly skilled developers. Best regards, Nick ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] QML Web Development
And CppCms http://cppcms.com/wikipp/en/page/main with Qt libs for server-side. 2013/11/26 Alan Alpert 4163654...@gmail.com On Tue, Nov 26, 2013 at 11:06 AM, Jason H scorp...@yahoo.com wrote: So as the release of 5.2 approaches, we get Qt in Win/Lin/OSX and iOS and Android, Qt will be fantastic toolkit. A glaring commission now is web development. I've been playing with node.js and since Qt is now dropping the v8 engine for a custom one, could Qt use the new engine for QML web apps? For those not familiar with nodejs it is a v8-powered javascript engine used for making server-side applications. Which has some custom JS extensions. Once we have a fully extendable JS engine (see that thread on the dev list, but we're still quite some way from it), it will be easy to add your own node extensions and run existing node.js libaries with our engine. Until then, you're stuck with QML or plain JS libraries, when many are written specifically for node. If we were to take that same engine and equip it whith HTML/JS widgets, we could use QML to code websites, much in the same way Wt is the web version of Qt. However, we (I) would not want to split this functionality from Qt itself. All you need is to write a QML module which generates HTML/JS instead of pushing pixels to screen. Theoretically, you might even be able to write a custom QSGRenderer (although that would ruin even the limited interaction of server-side generated HTML). PS: Have a look at https://projects.kde.org/projects/playground/www/qmlweb if you haven't seen it. Maybe not quite the same approach though, it's more client-side. -- Alan Alpert ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
[Interest] Z-order in QML
Hello. Is it possible to set depth of sprite in QML for show one object behind other and change it dynamically? Best regards, Nick ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] [Ubuntu-phone] Z-order in QML
Thanks 2013/11/1 Gustavo Niemeyer gustavo.nieme...@canonical.com Yes, it's possble. Check this out for details: http://qt-project.org/doc/qt-5.0/qtquick/qml-qtquick2-item.html#z-prop On Fri, Nov 1, 2013 at 10:18 AM, Николай Шатохин n.shatok...@gmail.com wrote: Hello. Is it possible to set depth of sprite in QML for show one object behind other and change it dynamically? Best regards, Nick -- Mailing list: https://launchpad.net/~ubuntu-phone Post to : ubuntu-ph...@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-phone More help : https://help.launchpad.net/ListHelp -- gustavo @ http://niemeyer.net ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] Pointers as Q_PPOPERTY
Can I use QList (or something similar) as Q_PROPERTY? How can I use it in
QML? Can I use QList of pointers? And get objects in QML
Best regards,
Nick
2013/10/4 Николай Шатохин n.shatok...@gmail.com
Yes, I did exactly the same. Thanks.
2013/10/4 Bo Thorsen bthor...@ics.com
Hi Николай Шатохин,
I saw on the list, that you got this working. But there were a bunch of
things missing in the discussion. I have just done the same thing you are
trying in one of our 4.8.5 based projects.
Some of this has been said, other parts haven't. I hope this is a
complete description that should help you understand the topic.
Den 02-10-2013 16:12, Николай Шатохин skrev:
I registered as QML Type class Ship inherited from QObject that have
fields:
Q_PROPERTY(Hull hull READ hull)
Q_PROPERTY(Reactor reactor READ reactor)
Q_PROPERTY(Shields shields READ shields)
(all field classes inherited from QObject too)
But in ship class I'm using this fields as pointers (Hull * hull). So,
how to use correctly Q_Properties in this case? (I need call methods
from this fields and catch signals from them in QML)
Can I use something like this Q_PROPERTY(Hull hull READ hull)?
As already pointed out, you have to do pointers for this:
class Hull : public QObject { ... };
class Ship : public QObject {
Q_OBJECT
Q_PROPERTY(Hull* hull READ hull CONSTANT)
Hull* m_hull;
public:
Ship() : m_hull(new Hull(this)) {}
Hull* hull() { return m_hull; }
};
The Reactor and Shields work exactly the same way.
For this to work, you have to declare the Hull, Reactor and Shields types
to the QML engine. Something like this:
qmlRegisterUncreatableType**Hull(MyGame, 1, 0, Hull, Can't be
created.);
qmlRegisterTypeShip(MyGame**, 1, 0, Ship);
And then in QML:
Ship
{
id: ship
Hull
{
id: hull_indicator
backend: ship.hull
}
onDamage:
{
ship.hull.reduce(damage);
}
}
You don't need the extra Hull {} declaration here. There is already a
Hull object in your ship, the ship.hull you use in onDamage.
If this is about visualization, you should have a different set of
classes, ShipView and HullView or something, that shows this:
import MyGame 1.0
Item {
id: completeShip
ShipView {
anchors.fill: parent
ship: internal.ship
}
HullView {
anchors.fill: parent
hull: internal.ship.hull
}
QtObject {
id: internal
Ship {
id: ship
}
}
}
This might seem complicated at first, but you achieve one thing I find
extremely important in QML coding: Keep your state in C++ and totally
separated from the visualization of it.
This is a standard MVC pattern, actually. The Ship is the model, the
completeShip is the controller and ShipView/HullView is the visualization.
But somehow this isn't always followed when people code QML.
I hope this helps.
Bo.
--
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Integrated Computer Solutions. Delivering World-Class Applications
http://ics.com/services
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[Interest] Install both Qt5 and Qt4.7 at one Ubuntu
Hello. I need Qt4.7 for developing apps for embedded systems and Qt5 for desktop apps. Is it possible to install it both in Ubuntu 13.04 without conflicts? Best regards, Nick ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] Install both Qt5 and Qt4.7 at one Ubuntu
But installing qt4-default from repo removing qt5-default. 2013/10/7 Jonathan Greig redteam...@gmail.com they should play nicely, look for qtchooser and use it to switch between the two: qtchooser -run-tool=qmake -qt=qt5 make On Mon, Oct 7, 2013 at 5:06 AM, Mandeep Sandhu mandeepsandhu@gmail.com wrote: I think both Qt4 and 5 are there in the Ubuntu apt repos. Though I'm not sure if they'll play nice if _both_ are installed from apt (eg which qmake will be used?). Maybe you can install one of them directly (eg: by downloading Qt5 pre-built binaries from qt-project.org) and the other one from apt. Basically you just need to use the right qmake for building your apps. Eg: you can have 'qmake5' point to the Qt5 qmake binary and use that for building Qt5 apps while 'qmake' uses the Qt4 binary. HTH, -mandeep On Mon, Oct 7, 2013 at 3:21 PM, Николай Шатохин n.shatok...@gmail.comwrote: Hello. I need Qt4.7 for developing apps for embedded systems and Qt5 for desktop apps. Is it possible to install it both in Ubuntu 13.04 without conflicts? Best regards, Nick ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] Install both Qt5 and Qt4.7 at one Ubuntu
qtchooser working, thanks. But there is only Qt4.8.1 in Ubuntu repos. Is it possible to install Qt4.7 without building from source? 2013/10/7 Jonathan Greig redteam...@gmail.com Do not worry about it removing the qt4-default or qt5-default. It will do that, just figure out which one you use more often and make that the default. When you want to build for qt4 or qt5 then just use the qtchooser. I'm using the qtchooser method on a Kubuntu 13.10 install and it hasn't broken yet :P ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] Install both Qt5 and Qt4.7 at one Ubuntu
Lol, you just solved my segfault problem :)) 2013/10/7 Guido Seifert warg...@gmx.de There can always be conflicts. One problem, which bit me: I have a Qt5 app, which uses QMultimedia. QMultimedia uses the gstreamer libs on Linux. The gstreamer libs use libproxy if available. And one of the libproxy modules links against Qt4 - crash. Only solution for me was to delete the libproxy plugin, which I fortunately don't need. This was on Debian und not Ubuntu. Guido On Mon, 7 Oct 2013 12:51:48 +0300 Николай Шатохин n.shatok...@gmail.com wrote: Hello. I need Qt4.7 for developing apps for embedded systems and Qt5 for desktop apps. Is it possible to install it both in Ubuntu 13.04 without conflicts? Best regards, Nick ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] Pointers as Q_PPOPERTY
Yes, I did exactly the same. Thanks.
2013/10/4 Bo Thorsen bthor...@ics.com
Hi Николай Шатохин,
I saw on the list, that you got this working. But there were a bunch of
things missing in the discussion. I have just done the same thing you are
trying in one of our 4.8.5 based projects.
Some of this has been said, other parts haven't. I hope this is a complete
description that should help you understand the topic.
Den 02-10-2013 16:12, Николай Шатохин skrev:
I registered as QML Type class Ship inherited from QObject that have
fields:
Q_PROPERTY(Hull hull READ hull)
Q_PROPERTY(Reactor reactor READ reactor)
Q_PROPERTY(Shields shields READ shields)
(all field classes inherited from QObject too)
But in ship class I'm using this fields as pointers (Hull * hull). So,
how to use correctly Q_Properties in this case? (I need call methods
from this fields and catch signals from them in QML)
Can I use something like this Q_PROPERTY(Hull hull READ hull)?
As already pointed out, you have to do pointers for this:
class Hull : public QObject { ... };
class Ship : public QObject {
Q_OBJECT
Q_PROPERTY(Hull* hull READ hull CONSTANT)
Hull* m_hull;
public:
Ship() : m_hull(new Hull(this)) {}
Hull* hull() { return m_hull; }
};
The Reactor and Shields work exactly the same way.
For this to work, you have to declare the Hull, Reactor and Shields types
to the QML engine. Something like this:
qmlRegisterUncreatableType**Hull(MyGame, 1, 0, Hull, Can't be
created.);
qmlRegisterTypeShip(MyGame**, 1, 0, Ship);
And then in QML:
Ship
{
id: ship
Hull
{
id: hull_indicator
backend: ship.hull
}
onDamage:
{
ship.hull.reduce(damage);
}
}
You don't need the extra Hull {} declaration here. There is already a Hull
object in your ship, the ship.hull you use in onDamage.
If this is about visualization, you should have a different set of
classes, ShipView and HullView or something, that shows this:
import MyGame 1.0
Item {
id: completeShip
ShipView {
anchors.fill: parent
ship: internal.ship
}
HullView {
anchors.fill: parent
hull: internal.ship.hull
}
QtObject {
id: internal
Ship {
id: ship
}
}
}
This might seem complicated at first, but you achieve one thing I find
extremely important in QML coding: Keep your state in C++ and totally
separated from the visualization of it.
This is a standard MVC pattern, actually. The Ship is the model, the
completeShip is the controller and ShipView/HullView is the visualization.
But somehow this isn't always followed when people code QML.
I hope this helps.
Bo.
--
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Integrated Computer Solutions. Delivering World-Class Applications
http://ics.com/services
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[Interest] Qt on PS4 and SteamOS
Hello. Can I use Qt5 and QML for game developing for PS4 and SteamOS? Best regards, Nick ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
[Interest] Creating QML views for C++ objects (not classes)
Hello. When I create a class in C++, I can register it for QML and can create view for it. It's very convenient. But, if I need many objects of the same type, and need to show few views on screen, I got problems. Is it possible to register QML type for object, not for class? If I change some object, I need to see only its view changed. Best regard, Nick ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
[Interest] Qt5 with Qt 4.7 on Ubuntu 13.04. How to install it both without conflicts?
Hello. I'm using Qt5 and need Qt 4.7 now (for porting my game to handheld game console). Is it possible to install it additionally on Ubuntu 13.04? Best regards, Nick ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
[Interest] Fastest way to send a signal to one of children processes
Hello. I have one main process and many children processes that controls TCP-connections with clients (For example, one million). Each child process can send signal to main process with id of another process. So, server must to send data to this process. How to do this quickly? Now, I send signals to each process and they check id in signal with their ids. Best regards, Nick ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
[Interest] How to update resource file before every building project
Hello. My QML files in resource file (.qrc). So, when I editing qml I need change something in resource file and save it for apply changes to qml files. How to do this automatically before build? Best regards, Nick ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] How to update resource file before every building project
Didn't help. 2013/2/9 Oleg Shparber troll...@gmail.com Hi, Running qmake should help. -- Oleg On Sat, Feb 9, 2013 at 7:21 PM, Николай Шатохин n.shatok...@gmail.comwrote: Hello. My QML files in resource file (.qrc). So, when I editing qml I need change something in resource file and save it for apply changes to qml files. How to do this automatically before build? Best regards, Nick ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
[Interest] QML: is it draw unvisible parts?
Hi. If I'll create long game scene on QML and will just move it to left or to right on screen (game scene bigger than screen), will it be slow? Or QML don't draw unvisible parts? Best regards, Nick ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
[Interest] Adding objects in QML and scrolling it
Hello. Can anybody help me with my problem? I have a scene (Rectangle). I need add objects (circles) into scene by signal (signal returns coordinates) from C++ class and move all objects on scene to left after it (scrolling). So, how can I add new object (Qml type)? How can I move all added objects to left by x coordinate for a custom value? How can I destroy object when it left screen? Best regards, Nick ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
[Interest] Disconnecting signals when object destroyed
Hello.
I found that QML trying to call object's methods even when it destroyed.
It's my main.qml file:
import QtQuick 1.1
Rectangle {
id: appWindow
width: 360
height: 360
property int i: 0;
property real step: 0.1;
property Component component;
signal trigger(int dx)
Text {
text: qsTr(Hello World)
anchors.centerIn: parent
}
MouseArea {
anchors.fill: parent
onClicked: {
//Qt.quit();
trigger(100);
component = Qt.createComponent(Note.qml);
if(component != null)
continueCreation();
else
component.ready.connect(continueCreation);
}
}
onTrigger: {
console.log(parent trigger);
}
function destruction(obj)
{
console.log(destruction);
trigger.disconnect(obj.move);
}
function continueCreation()
{
var sprite = component.createObject(appWindow, {x: 100, y:
100, color:Qt.rgba(1, i*step, 1-i*step, 1)});
if (sprite == null) {
// Error Handling
console.log(Error creating object);
}
sprite.destruction.connect(destruction);
trigger.connect(sprite.move);
i++;
}
}
It's my Note.qml file:
import QtQuick 1.1
Rectangle {
id: note
width: 100
height: 62
color: red
//signal move();
signal destruction(variant obj);
MouseArea {
anchors.fill: parent
onClicked: {
destruction(this);
note.destroy();
}
}
function move(dx)
{
x += dx
}
}
Why it can't disconnect signal when object destroyed? How to do this right?
Sorry, I'm novice in QML.
Best regards,
Nick
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