How to make custom QML component visible?
-1
I am quite new to QT and I need to create QML component for viewing web-pages with posibility of tracking click on some links. I created MyWebView class inheritated from QWebView
mywebview.h
#ifndef MYWEBVIEW_H
#define MYWEBVIEW_H
#include <QApplication>
#include <QWebFrame>
#include <QWebPage>
#include <QWebView>
#include <QUrl>
#include <QJsonDocument>
#include <QJsonObject>
#include <QObject>
#include <QProcess>
class MyWebView: public QWebView {
Q_OBJECT
public:
explicit MyWebView();
public slots:
void onJavaScriptWindowObjectCleared();
void trackOpen(QString metadata);
void trackTurn(QString metadata);
mywebview.cpp
#include "mywebview.h"
MyWebView::MyWebView(){
connect(this->page()->mainFrame(), SIGNAL(javaScriptWindowObjectCleared()),
this, SLOT(onJavaScriptWindowObjectCleared()));
qInfo() << "MyWebView Created";
}
void MyWebView::onJavaScriptWindowObjectCleared(){
this->page()->mainFrame()->evaluateJavaScript("console.log('MyWebView init!')");
}
void MyWebView::trackOpen(QString metadata){
qWarning() << "Open";
}
void MyWebView::trackTurn(QString metadata) {
qWarning() << "Turn";
}
Main program using this component:
main.cpp
#include "mywebview.h"
#include <QtQuick/QQuickView>
#include <QApplication>
#include <QtQuick/QQuickItem>
#include <QQmlApplicationEngine>
#include <QtWebView/QtWebView>
int main(int argc, char *argv)
{
QApplication app(argc, argv);
qmlRegisterType<MyWebView>("MyWebView", 1, 0, "MyWebView");
QQmlApplicationEngine engine;
engine.load(QUrl(QStringLiteral("qrc:/app.qml")));
return app.exec();
}
app.qml
import MyWebView 1.0
import QtQuick 2.0
import QtWebKit 3.0
import QtQuick.Controls 1.4
import QtQuick.Window 2.0
ApplicationWindow {
id: window
visible: true
title: "Window"
width: 640
height: 480
MyWebView {
id: webview
url: "http://127.0.0.1"
}
}
So, while running this application I can see only clean window and now content inside it. Investigating of local web server's logs (127.0.0.1) I found that program makes requests to web server. How to make my component visible?
Thanks in advance
c++ qt qml
asked Nov 27 '18 at 16:27
nickolai_bynickolai_by
1
add a comment |
-1
I am quite new to QT and I need to create QML component for viewing web-pages with posibility of tracking click on some links. I created MyWebView class inheritated from QWebView
mywebview.h
#ifndef MYWEBVIEW_H
#define MYWEBVIEW_H
#include <QApplication>
#include <QWebFrame>
#include <QWebPage>
#include <QWebView>
#include <QUrl>
#include <QJsonDocument>
#include <QJsonObject>
#include <QObject>
#include <QProcess>
class MyWebView: public QWebView {
Q_OBJECT
public:
explicit MyWebView();
public slots:
void onJavaScriptWindowObjectCleared();
void trackOpen(QString metadata);
void trackTurn(QString metadata);
mywebview.cpp
#include "mywebview.h"
MyWebView::MyWebView(){
connect(this->page()->mainFrame(), SIGNAL(javaScriptWindowObjectCleared()),
this, SLOT(onJavaScriptWindowObjectCleared()));
qInfo() << "MyWebView Created";
}
void MyWebView::onJavaScriptWindowObjectCleared(){
this->page()->mainFrame()->evaluateJavaScript("console.log('MyWebView init!')");
}
void MyWebView::trackOpen(QString metadata){
qWarning() << "Open";
}
void MyWebView::trackTurn(QString metadata) {
qWarning() << "Turn";
}
Main program using this component:
main.cpp
#include "mywebview.h"
#include <QtQuick/QQuickView>
#include <QApplication>
#include <QtQuick/QQuickItem>
#include <QQmlApplicationEngine>
#include <QtWebView/QtWebView>
int main(int argc, char *argv)
{
QApplication app(argc, argv);
qmlRegisterType<MyWebView>("MyWebView", 1, 0, "MyWebView");
QQmlApplicationEngine engine;
engine.load(QUrl(QStringLiteral("qrc:/app.qml")));
return app.exec();
}
app.qml
import MyWebView 1.0
import QtQuick 2.0
import QtWebKit 3.0
import QtQuick.Controls 1.4
import QtQuick.Window 2.0
ApplicationWindow {
id: window
visible: true
title: "Window"
width: 640
height: 480
MyWebView {
id: webview
url: "http://127.0.0.1"
}
}
So, while running this application I can see only clean window and now content inside it. Investigating of local web server's logs (127.0.0.1) I found that program makes requests to web server. How to make my component visible?
Thanks in advance
c++ qt qml
asked Nov 27 '18 at 16:27
nickolai_bynickolai_by
1
Why do you reinvent the wheel? Creating an item as a rectangle is simple but a browser is too complex a task. You must use WebEngineView doc.qt.io/qt-5/qml-qtwebengine-webengineview.html
– eyllanesc
Nov 27 '18 at 16:44
I need to make possible running C++ procedure from javascript on the web page. As I can see WebEngineView allows to run Javascript only, but it's neccessary to calculate statistics inside the C++ app.
– nickolai_by
Nov 28 '18 at 15:28
QML can make calls to C++ code so I do not see that that is the problem, if you point out that you want to do exactly I could point out what to do (ie what C++ code you want to do and when you want to call it), QWebView is a Qt Widget that QML can not handle, does not know how to ask you to paint on the window so you can not observe it, QML expects Items, not Qt Widgets.
– eyllanesc
Nov 28 '18 at 19:16
My web-page has couple of javascript handlers for events (opening new link, clicking on buttons) and I need to collect statistics in my application from this events including metadata. In other words, javascript function should call C++ procedure in my app with array of data as a param.
– nickolai_by
Nov 29 '18 at 8:19
add a comment |
-1
-1
-1
I am quite new to QT and I need to create QML component for viewing web-pages with posibility of tracking click on some links. I created MyWebView class inheritated from QWebView
mywebview.h
#ifndef MYWEBVIEW_H
#define MYWEBVIEW_H
#include <QApplication>
#include <QWebFrame>
#include <QWebPage>
#include <QWebView>
#include <QUrl>
#include <QJsonDocument>
#include <QJsonObject>
#include <QObject>
#include <QProcess>
class MyWebView: public QWebView {
Q_OBJECT
public:
explicit MyWebView();
public slots:
void onJavaScriptWindowObjectCleared();
void trackOpen(QString metadata);
void trackTurn(QString metadata);
mywebview.cpp
#include "mywebview.h"
MyWebView::MyWebView(){
connect(this->page()->mainFrame(), SIGNAL(javaScriptWindowObjectCleared()),
this, SLOT(onJavaScriptWindowObjectCleared()));
qInfo() << "MyWebView Created";
}
void MyWebView::onJavaScriptWindowObjectCleared(){
this->page()->mainFrame()->evaluateJavaScript("console.log('MyWebView init!')");
}
void MyWebView::trackOpen(QString metadata){
qWarning() << "Open";
}
void MyWebView::trackTurn(QString metadata) {
qWarning() << "Turn";
}
Main program using this component:
main.cpp
#include "mywebview.h"
#include <QtQuick/QQuickView>
#include <QApplication>
#include <QtQuick/QQuickItem>
#include <QQmlApplicationEngine>
#include <QtWebView/QtWebView>
int main(int argc, char *argv)
{
QApplication app(argc, argv);
qmlRegisterType<MyWebView>("MyWebView", 1, 0, "MyWebView");
QQmlApplicationEngine engine;
engine.load(QUrl(QStringLiteral("qrc:/app.qml")));
return app.exec();
}
app.qml
import MyWebView 1.0
import QtQuick 2.0
import QtWebKit 3.0
import QtQuick.Controls 1.4
import QtQuick.Window 2.0
ApplicationWindow {
id: window
visible: true
title: "Window"
width: 640
height: 480
MyWebView {
id: webview
url: "http://127.0.0.1"
}
}
So, while running this application I can see only clean window and now content inside it. Investigating of local web server's logs (127.0.0.1) I found that program makes requests to web server. How to make my component visible?
Thanks in advance
c++ qt qml
asked Nov 27 '18 at 16:27
nickolai_bynickolai_by
1
I am quite new to QT and I need to create QML component for viewing web-pages with posibility of tracking click on some links. I created MyWebView class inheritated from QWebView
mywebview.h
#ifndef MYWEBVIEW_H
#define MYWEBVIEW_H
#include <QApplication>
#include <QWebFrame>
#include <QWebPage>
#include <QWebView>
#include <QUrl>
#include <QJsonDocument>
#include <QJsonObject>
#include <QObject>
#include <QProcess>
class MyWebView: public QWebView {
Q_OBJECT
public:
explicit MyWebView();
public slots:
void onJavaScriptWindowObjectCleared();
void trackOpen(QString metadata);
void trackTurn(QString metadata);
mywebview.cpp
#include "mywebview.h"
MyWebView::MyWebView(){
connect(this->page()->mainFrame(), SIGNAL(javaScriptWindowObjectCleared()),
this, SLOT(onJavaScriptWindowObjectCleared()));
qInfo() << "MyWebView Created";
}
void MyWebView::onJavaScriptWindowObjectCleared(){
this->page()->mainFrame()->evaluateJavaScript("console.log('MyWebView init!')");
}
void MyWebView::trackOpen(QString metadata){
qWarning() << "Open";
}
void MyWebView::trackTurn(QString metadata) {
qWarning() << "Turn";
}
Main program using this component:
main.cpp
#include "mywebview.h"
#include <QtQuick/QQuickView>
#include <QApplication>
#include <QtQuick/QQuickItem>
#include <QQmlApplicationEngine>
#include <QtWebView/QtWebView>
int main(int argc, char *argv)
{
QApplication app(argc, argv);
qmlRegisterType<MyWebView>("MyWebView", 1, 0, "MyWebView");
QQmlApplicationEngine engine;
engine.load(QUrl(QStringLiteral("qrc:/app.qml")));
return app.exec();
}
app.qml
import MyWebView 1.0
import QtQuick 2.0
import QtWebKit 3.0
import QtQuick.Controls 1.4
import QtQuick.Window 2.0
ApplicationWindow {
id: window
visible: true
title: "Window"
width: 640
height: 480
MyWebView {
id: webview
url: "http://127.0.0.1"
}
}
So, while running this application I can see only clean window and now content inside it. Investigating of local web server's logs (127.0.0.1) I found that program makes requests to web server. How to make my component visible?
Thanks in advance
c++ qt qml
c++ qt qml
asked Nov 27 '18 at 16:27
nickolai_bynickolai_by
1
asked Nov 27 '18 at 16:27
nickolai_bynickolai_by
1
asked Nov 27 '18 at 16:27
nickolai_bynickolai_by
1
asked Nov 27 '18 at 16:27
nickolai_bynickolai_by
1
asked Nov 27 '18 at 16:27
nickolai_bynickolai_by
1
1
Why do you reinvent the wheel? Creating an item as a rectangle is simple but a browser is too complex a task. You must use WebEngineView doc.qt.io/qt-5/qml-qtwebengine-webengineview.html
– eyllanesc
Nov 27 '18 at 16:44
I need to make possible running C++ procedure from javascript on the web page. As I can see WebEngineView allows to run Javascript only, but it's neccessary to calculate statistics inside the C++ app.
– nickolai_by
Nov 28 '18 at 15:28
QML can make calls to C++ code so I do not see that that is the problem, if you point out that you want to do exactly I could point out what to do (ie what C++ code you want to do and when you want to call it), QWebView is a Qt Widget that QML can not handle, does not know how to ask you to paint on the window so you can not observe it, QML expects Items, not Qt Widgets.
– eyllanesc
Nov 28 '18 at 19:16
My web-page has couple of javascript handlers for events (opening new link, clicking on buttons) and I need to collect statistics in my application from this events including metadata. In other words, javascript function should call C++ procedure in my app with array of data as a param.
– nickolai_by
Nov 29 '18 at 8:19
add a comment |
Why do you reinvent the wheel? Creating an item as a rectangle is simple but a browser is too complex a task. You must use WebEngineView doc.qt.io/qt-5/qml-qtwebengine-webengineview.html
– eyllanesc
Nov 27 '18 at 16:44
I need to make possible running C++ procedure from javascript on the web page. As I can see WebEngineView allows to run Javascript only, but it's neccessary to calculate statistics inside the C++ app.
– nickolai_by
Nov 28 '18 at 15:28
QML can make calls to C++ code so I do not see that that is the problem, if you point out that you want to do exactly I could point out what to do (ie what C++ code you want to do and when you want to call it), QWebView is a Qt Widget that QML can not handle, does not know how to ask you to paint on the window so you can not observe it, QML expects Items, not Qt Widgets.
– eyllanesc
Nov 28 '18 at 19:16
My web-page has couple of javascript handlers for events (opening new link, clicking on buttons) and I need to collect statistics in my application from this events including metadata. In other words, javascript function should call C++ procedure in my app with array of data as a param.
– nickolai_by
Nov 29 '18 at 8:19
Why do you reinvent the wheel? Creating an item as a rectangle is simple but a browser is too complex a task. You must use WebEngineView doc.qt.io/qt-5/qml-qtwebengine-webengineview.html
– eyllanesc
Nov 27 '18 at 16:44
Why do you reinvent the wheel? Creating an item as a rectangle is simple but a browser is too complex a task. You must use WebEngineView doc.qt.io/qt-5/qml-qtwebengine-webengineview.html
– eyllanesc
Nov 27 '18 at 16:44
I need to make possible running C++ procedure from javascript on the web page. As I can see WebEngineView allows to run Javascript only, but it's neccessary to calculate statistics inside the C++ app.
– nickolai_by
Nov 28 '18 at 15:28
I need to make possible running C++ procedure from javascript on the web page. As I can see WebEngineView allows to run Javascript only, but it's neccessary to calculate statistics inside the C++ app.
– nickolai_by
Nov 28 '18 at 15:28
QML can make calls to C++ code so I do not see that that is the problem, if you point out that you want to do exactly I could point out what to do (ie what C++ code you want to do and when you want to call it), QWebView is a Qt Widget that QML can not handle, does not know how to ask you to paint on the window so you can not observe it, QML expects Items, not Qt Widgets.
– eyllanesc
Nov 28 '18 at 19:16
QML can make calls to C++ code so I do not see that that is the problem, if you point out that you want to do exactly I could point out what to do (ie what C++ code you want to do and when you want to call it), QWebView is a Qt Widget that QML can not handle, does not know how to ask you to paint on the window so you can not observe it, QML expects Items, not Qt Widgets.
– eyllanesc
Nov 28 '18 at 19:16
My web-page has couple of javascript handlers for events (opening new link, clicking on buttons) and I need to collect statistics in my application from this events including metadata. In other words, javascript function should call C++ procedure in my app with array of data as a param.
– nickolai_by
Nov 29 '18 at 8:19
My web-page has couple of javascript handlers for events (opening new link, clicking on buttons) and I need to collect statistics in my application from this events including metadata. In other words, javascript function should call C++ procedure in my app with array of data as a param.
– nickolai_by
Nov 29 '18 at 8:19
add a comment |
1 Answer
1
active
oldest
votes
0
Your item needs to be anchored to the parent:
MyWebView {
id: webview
url: "http://127.0.0.1"
anchors.fill: parent
}
answered Nov 27 '18 at 19:00
AmfasisAmfasis
653414
I tried, but I've got 'Cannot assign to non-existent property "anchors"'
– nickolai_by
Nov 28 '18 at 15:29
that is weird. Can you for the sake of at least seeing something assign awidthandheight?
– Amfasis
Nov 28 '18 at 19:21
Cannot, 'Invalid property assignment: "width" is a read-only property'
– nickolai_by
Nov 29 '18 at 9:00
add a comment |
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1 Answer
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1 Answer
1
active
oldest
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active
oldest
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active
oldest
votes
0
Your item needs to be anchored to the parent:
MyWebView {
id: webview
url: "http://127.0.0.1"
anchors.fill: parent
}
answered Nov 27 '18 at 19:00
AmfasisAmfasis
653414
I tried, but I've got 'Cannot assign to non-existent property "anchors"'
– nickolai_by
Nov 28 '18 at 15:29
that is weird. Can you for the sake of at least seeing something assign awidthandheight?
– Amfasis
Nov 28 '18 at 19:21
Cannot, 'Invalid property assignment: "width" is a read-only property'
– nickolai_by
Nov 29 '18 at 9:00
add a comment |
0
Your item needs to be anchored to the parent:
MyWebView {
id: webview
url: "http://127.0.0.1"
anchors.fill: parent
}
answered Nov 27 '18 at 19:00
AmfasisAmfasis
653414
I tried, but I've got 'Cannot assign to non-existent property "anchors"'
– nickolai_by
Nov 28 '18 at 15:29
that is weird. Can you for the sake of at least seeing something assign awidthandheight?
– Amfasis
Nov 28 '18 at 19:21
Cannot, 'Invalid property assignment: "width" is a read-only property'
– nickolai_by
Nov 29 '18 at 9:00
add a comment |
0
0
0
Your item needs to be anchored to the parent:
MyWebView {
id: webview
url: "http://127.0.0.1"
anchors.fill: parent
}
answered Nov 27 '18 at 19:00
AmfasisAmfasis
653414
Your item needs to be anchored to the parent:
MyWebView {
id: webview
url: "http://127.0.0.1"
anchors.fill: parent
}
answered Nov 27 '18 at 19:00
AmfasisAmfasis
653414
answered Nov 27 '18 at 19:00
AmfasisAmfasis
653414
answered Nov 27 '18 at 19:00
AmfasisAmfasis
653414
answered Nov 27 '18 at 19:00
AmfasisAmfasis
653414
653414
I tried, but I've got 'Cannot assign to non-existent property "anchors"'
– nickolai_by
Nov 28 '18 at 15:29
that is weird. Can you for the sake of at least seeing something assign awidthandheight?
– Amfasis
Nov 28 '18 at 19:21
Cannot, 'Invalid property assignment: "width" is a read-only property'
– nickolai_by
Nov 29 '18 at 9:00
add a comment |
I tried, but I've got 'Cannot assign to non-existent property "anchors"'
– nickolai_by
Nov 28 '18 at 15:29
that is weird. Can you for the sake of at least seeing something assign awidthandheight?
– Amfasis
Nov 28 '18 at 19:21
Cannot, 'Invalid property assignment: "width" is a read-only property'
– nickolai_by
Nov 29 '18 at 9:00
I tried, but I've got 'Cannot assign to non-existent property "anchors"'
– nickolai_by
Nov 28 '18 at 15:29
I tried, but I've got 'Cannot assign to non-existent property "anchors"'
– nickolai_by
Nov 28 '18 at 15:29
that is weird. Can you for the sake of at least seeing something assign a
width and height?– Amfasis
Nov 28 '18 at 19:21
that is weird. Can you for the sake of at least seeing something assign a
width and height?– Amfasis
Nov 28 '18 at 19:21
Cannot, 'Invalid property assignment: "width" is a read-only property'
– nickolai_by
Nov 29 '18 at 9:00
Cannot, 'Invalid property assignment: "width" is a read-only property'
– nickolai_by
Nov 29 '18 at 9:00
add a comment |
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Why do you reinvent the wheel? Creating an item as a rectangle is simple but a browser is too complex a task. You must use WebEngineView doc.qt.io/qt-5/qml-qtwebengine-webengineview.html
– eyllanesc
Nov 27 '18 at 16:44
I need to make possible running C++ procedure from javascript on the web page. As I can see WebEngineView allows to run Javascript only, but it's neccessary to calculate statistics inside the C++ app.
– nickolai_by
Nov 28 '18 at 15:28
QML can make calls to C++ code so I do not see that that is the problem, if you point out that you want to do exactly I could point out what to do (ie what C++ code you want to do and when you want to call it), QWebView is a Qt Widget that QML can not handle, does not know how to ask you to paint on the window so you can not observe it, QML expects Items, not Qt Widgets.
– eyllanesc
Nov 28 '18 at 19:16
My web-page has couple of javascript handlers for events (opening new link, clicking on buttons) and I need to collect statistics in my application from this events including metadata. In other words, javascript function should call C++ procedure in my app with array of data as a param.
– nickolai_by
Nov 29 '18 at 8:19