projects/infoscreen/MainView.cpp

#include "MainView.h"
#include <QApplication>
#include <QPushButton>
#include <QLabel>
#include <QVBoxLayout>

#include <QTimer>
#include <QKeyEvent>
#include <QSettings>
#include <QMessageBox>

#include "MyWebView.h"
#include "clientsiderender.h"
#include "pictureview.h"
#include "videoview.h"

#include "httpwrapper.h"


MainView::MainView(QWidget* parent)
    : QWidget(parent), timer(0)
{

    settings = new QSettings("Caddi", "infoscreen");
    url = settings->value("url").toString();
    bool xmlMode = settings->value("xml").toBool();
    screenid = settings->value("screenid").toString();

    if (url == "" || screenid == "") {
        QMessageBox::warning(this,"infoscreen","Could not find url or screenid in config file " + settings->fileName());

        exit(1); //Normal qApp->exit() doesn't terminate the init sequence so use std C exit function
    }


    this->resize(400,400);
    this->setWindowState( Qt::WindowFullScreen );
    this->grabKeyboard();

    qApp->setOverrideCursor( QCursor( Qt::BlankCursor) );

    render = new ClientSideRender(this);
    render->setVisible( false );

    web = new MyWebView(this);
    web->setVisible( false);

    picture = new PictureView(this);
    picture->setVisible( false );

    video = new VideoView(this);
    video->setVisible(false);

    QVBoxLayout* layout = new QVBoxLayout();
    layout->addWidget(web,1);
    layout->addWidget(render,1);
    layout->addWidget(picture,1);
    layout->addWidget(video,1);
    layout->addStretch();
    layout->setContentsMargins(0,0,0,0);
    setLayout(layout);


    if (xmlMode == true) {
        xmlUrl = url + "?screen_id=" + screenid;
        qDebug() << "Starting XML mode";
        qDebug() << "xmlUrl" << xmlUrl;

        timer = new QTimer(this);
        connect(timer, SIGNAL(timeout() ), this, SLOT(onTimer() ));
        timer->start(100);
    } else {
        qDebug() << "Starting plain browser mode";
        web->setVisible(true);
        web->start(url,screenid);
    }
}

void MainView::closeEvent ( QCloseEvent * event )
{
    Q_UNUSED(event);
    exit(0); //force application shutdown
}

void MainView::keyPressEvent ( QKeyEvent* event )
{
    int key = event->key();
    if (key == ' ' || key == Qt::Key_Return || key == Qt::Key_Enter) {
        close();
    }
}  

void MainView::onTimer()
{
    screenManager.timerTick();

    readXml();

    switchScreens();
}


bool MainView::readXml()
{
    const int TIMEOUT = 30*60*1000; // 30 minutter
    if ( lastXml.isNull() || lastXml.elapsed() > TIMEOUT) {


        bool res = xmlHandler.readXml( xmlUrl );

        lastXml = QTime::currentTime();

        screenItems = xmlHandler.getScreenSet();

        if ( currentItemIdx >= screenItems.size() )
            currentItemIdx = screenItems.size()-1; //avoid overflow


        return true;
    } else {
        return false;
    }
}

void MainView::switchScreens()
{
    if (video->isVisible() && video->isPlaying() ) {
        return; //wait until current clip has finished
    }

    if (lastScreenSwitch.isNull() || lastScreenSwitch.elapsed() > (currentItem.runtime*1000)) {

        QTime now = QTime::currentTime();
        if (lastScreenSwitch.isNull())
            currentItemIdx = -1;

        bool found = false;
        int tries = 0;

        if (screenItems.size() > 0) { //only try if we have a any screens
            while (found == false && tries <= screenItems.size()) { //find next with valid display time
                tries++;
                currentItemIdx = (currentItemIdx+1) % screenItems.size();
                currentItem = screenItems.at(currentItemIdx);

                if (currentItem.start <= now && now <= currentItem.stop )
                    found = true;
            }
        }

        if (found) {

            if (currentItem.module == "info_image") {
                ensureVisible(picture);

                picture->loadFromUrl( currentItem.url );

            } else if (currentItem.module == "info_web") {
                ensureVisible(web);
                web->load(currentItem.url);
            } else if (currentItem.module == "info_video") {
                ensureVisible(video);
                video->loadUrl(currentItem.url);
            } else {
                errorInfoScreen("Unknown module: " + currentItem.module );
            }

        } else {
            qDebug() << "no screen";
            errorInfoScreen("Der er ingen information at vise");
        }
        lastScreenSwitch = QTime::currentTime();

    }
}

void MainView::errorInfoScreen(QString msg)
{
        ensureVisible(web);
        web->setHtml("<html>\
                <body text='#505050' bgcolor='#000000'>\
        <table width='100%' height='100%'><tr><td align='center' valign='middel'><h1>" + msg+ "</h1></td></tr></table>\
                </body></html>");
}

void MainView::ensureVisible(QWidget* widget)
{
    if (! widget->isVisible()) {
        hideAll();
        widget->setVisible(true);
    }
}

void MainView::hideAll()
{
    render->setVisible( false );
    web->setVisible( false);
    picture->setVisible( false );
    video->setVisible(false);
}
1	#include "MainView.h"
2	#include <QApplication>
3	#include <QPushButton>
4	#include <QLabel>
5	#include <QVBoxLayout>
6
7	#include <QTimer>
8	#include <QKeyEvent>
9	#include <QSettings>
10	#include <QMessageBox>
11
12	#include "MyWebView.h"
13	#include "clientsiderender.h"
14	#include "pictureview.h"
15	#include "videoview.h"
16
17	#include "httpwrapper.h"
18
19
20	MainView::MainView(QWidget* parent)
21	: QWidget(parent), timer(0)
22	{
23
24	settings = new QSettings("Caddi", "infoscreen");
25	url = settings->value("url").toString();
26	bool xmlMode = settings->value("xml").toBool();
27	screenid = settings->value("screenid").toString();
28
29	if (url == "" \|\| screenid == "") {
30	QMessageBox::warning(this,"infoscreen","Could not find url or screenid in config file " + settings->fileName());
31
32	exit(1); //Normal qApp->exit() doesn't terminate the init sequence so use std C exit function
33	}
34
35
36
37	this->resize(400,400);
38	this->setWindowState( Qt::WindowFullScreen );
39	this->grabKeyboard();
40
41	qApp->setOverrideCursor( QCursor( Qt::BlankCursor) );
42
43	render = new ClientSideRender(this);
44	render->setVisible( false );
45
46	web = new MyWebView(this);
47	web->setVisible( false);
48
49	picture = new PictureView(this);
50	picture->setVisible( false );
51
52	video = new VideoView(this);
53	video->setVisible(false);
54
55	QVBoxLayout* layout = new QVBoxLayout();
56	layout->addWidget(web,1);
57	layout->addWidget(render,1);
58	layout->addWidget(picture,1);
59	layout->addWidget(video,1);
60	layout->addStretch();
61	layout->setContentsMargins(0,0,0,0);
62	setLayout(layout);
63
64
65
66
67	if (xmlMode == true) {
68	xmlUrl = url + "?screen_id=" + screenid;
69	qDebug() << "Starting XML mode";
70	qDebug() << "xmlUrl" << xmlUrl;
71
72	timer = new QTimer(this);
73	connect(timer, SIGNAL(timeout() ), this, SLOT(onTimer() ));
74	timer->start(100);
75	} else {
76	qDebug() << "Starting plain browser mode";
77	web->setVisible(true);
78	web->start(url,screenid);
79	}
80	}
81
82	void MainView::closeEvent ( QCloseEvent * event )
83	{
84	Q_UNUSED(event);
85	exit(0); //force application shutdown
86	}
87
88	void MainView::keyPressEvent ( QKeyEvent* event )
89	{
90	int key = event->key();
91	if (key == ' ' \|\| key == Qt::Key_Return \|\| key == Qt::Key_Enter) {
92	close();
93	}
94	}
95
96	void MainView::onTimer()
97	{
98	screenManager.timerTick();
99
100	readXml();
101
102	switchScreens();
103	}
104
105
106	bool MainView::readXml()
107	{
108	const int TIMEOUT = 30601000; // 30 minutter
109	if ( lastXml.isNull() \|\| lastXml.elapsed() > TIMEOUT) {
110
111
112	bool res = xmlHandler.readXml( xmlUrl );
113
114	lastXml = QTime::currentTime();
115
116	screenItems = xmlHandler.getScreenSet();
117
118	if ( currentItemIdx >= screenItems.size() )
119	currentItemIdx = screenItems.size()-1; //avoid overflow
120
121
122	return true;
123	} else {
124	return false;
125	}
126	}
127
128	void MainView::switchScreens()
129	{
130	if (video->isVisible() && video->isPlaying() ) {
131	return; //wait until current clip has finished
132	}
133
134	if (lastScreenSwitch.isNull() \|\| lastScreenSwitch.elapsed() > (currentItem.runtime*1000)) {
135
136	QTime now = QTime::currentTime();
137	if (lastScreenSwitch.isNull())
138	currentItemIdx = -1;
139
140	bool found = false;
141	int tries = 0;
142
143	if (screenItems.size() > 0) { //only try if we have a any screens
144	while (found == false && tries <= screenItems.size()) { //find next with valid display time
145	tries++;
146	currentItemIdx = (currentItemIdx+1) % screenItems.size();
147	currentItem = screenItems.at(currentItemIdx);
148
149	if (currentItem.start <= now && now <= currentItem.stop )
150	found = true;
151	}
152	}
153
154	if (found) {
155
156	if (currentItem.module == "info_image") {
157	ensureVisible(picture);
158
159	picture->loadFromUrl( currentItem.url );
160
161	} else if (currentItem.module == "info_web") {
162	ensureVisible(web);
163	web->load(currentItem.url);
164	} else if (currentItem.module == "info_video") {
165	ensureVisible(video);
166	video->loadUrl(currentItem.url);
167	} else {
168	errorInfoScreen("Unknown module: " + currentItem.module );
169	}
170
171	} else {
172	qDebug() << "no screen";
173	errorInfoScreen("Der er ingen information at vise");
174	}
175	lastScreenSwitch = QTime::currentTime();
176
177	}
178	}
179
180	void MainView::errorInfoScreen(QString msg)
181	{
182	ensureVisible(web);
183	web->setHtml("<html>\
184	<body text='#505050' bgcolor='#000000'>\
185	<table width='100%' height='100%'><tr><td align='center' valign='middel'><h1>" + msg+ "</h1></td></tr></table>\
186	</body></html>");
187	}
188
189	void MainView::ensureVisible(QWidget* widget)
190	{
191	if (! widget->isVisible()) {
192	hideAll();
193	widget->setVisible(true);
194	}
195	}
196
197	void MainView::hideAll()
198	{
199	render->setVisible( false );
200	web->setVisible( false);
201	picture->setVisible( false );
202	video->setVisible(false);
203	}