projects/infoscreen/MainView.cpp

#include "MainView.h"
#include <QApplication>
#include <QPushButton>
#include <QLabel>
#include <QStackedLayout>
#include <QSvgWidget>

#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)
{
    loadSettings();

    if ( currentMode == ModeXml) {
        xmlUrl = url + "?screen_id=" + screenid;
        qDebug() << "Starting XML mode";
        qDebug() << "xmlUrl" << xmlUrl;
    }

    if (currentMode == ModeSimpleWeb){
        qDebug() << "Starting plain browser mode";
    }

    if (currentMode == ModeLocal ) {
        qDebug() << "Starting local mode";
        qDebug() << "path" <<  path;

        readLocalFiles();
    }

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

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

    render = new ClientSideRender(this);

    web = new MyWebView(this);

    picture = new PictureView(this);

    video = new VideoView(this);

    svg = new QSvgWidget(this);

    layout = new QStackedLayout();
    layout->addWidget(web);
    layout->addWidget(render);
    layout->addWidget(picture);
    layout->addWidget(video);
    layout->addWidget(svg);
    layout->setContentsMargins(0,0,0,0);
    setLayout(layout);

    if (currentMode == ModeSimpleWeb) {
        web->setVisible(true);
        web->start(url,screenid);
    }


    qDebug() << "Starting timer...";
    timer = new QTimer(this);
    connect(timer, SIGNAL(timeout() ), this, SLOT(onTimer() ));
    timer->start(100);
}

void MainView::loadSettings()
{
    settings = new QSettings("Caddi", "infoscreen");

    qDebug() << "Loading settings" << settings->fileName();

    QString mode = settings->value("mode").toString().toLower();
    if (mode == "simpleweb") {
        currentMode = ModeSimpleWeb;
    } else if (mode == "xml") {
        currentMode = ModeXml;
    } else if (mode == "local") {
        currentMode = ModeLocal;
    }  else {
        currentMode = ModeNone;
        QMessageBox::warning(this, "infoscreen", "no operation mode set or mode given an invalid value");
        exit(1);
    }


    if (currentMode == ModeSimpleWeb || currentMode == ModeXml) {
        url = settings->value("url").toString();
        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
        }
    }

    if (currentMode == ModeLocal) {
        path = settings->value("path").toString();

        if (path == "") {
            QMessageBox::warning(this,"infoscreen","Could not find path in config file " + settings->fileName());
            exit(1);
        }
    }
}

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()
{
    qDebug() << "onTimer()";
    screenManager.timerTick();

    if (currentMode == ModeXml) {
        readXml();
    }

    if (currentMode == ModeXml || currentMode == ModeLocal) {
        switchScreens();
    }
}


void MainView::readLocalFiles()
{
    QDir dir(path);
    if (! dir.exists()) {
        QMessageBox::warning(this,"infoscreen","Local Source directory not found: " + path);
        exit(1);
    }
    QFileInfoList files = dir.entryInfoList(QDir::Files, QDir::Name); //only files, sort by name

    for (int i=0; i<files.size(); ++i) {
        QFileInfo file = files[i];
        qDebug() << "Found" << file.fileName();

        ScreenItem item;
        item.url = file.filePath();
        item.module = ModuleUnknown;

        QString ext = file.suffix().toLower();
        if (ext == "avi" || ext == "mpg" || ext == "mpeg") {
            item.module = ModuleVideo;
            item.runtime = 1;
        }

        if (ext == "jpg" || ext == "jpeg" || ext == "png" ) {
            item.module = ModuleImage;
            item.runtime = 10;
        }

        if (ext == "svg") {
            item.module = ModuleSvg;
            item.runtime = 10;
        }
        
        if (ext == "htm" || ext == "html") {
            item.module = ModuleWeb;
            item.runtime = 10;
        }

        if (item.module != ModuleUnknown) { //no need to enqueue unknown modules
            screenItems.push_back( item );
        }

    }

    qDebug() << "Found " << screenItems.size() << " playable items";
}


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.isValid() && currentItem.stop.isValid()) {
                    if (currentItem.start <= now && now <= currentItem.stop )
                        found = true;
                } else { // if start or stop time was invalid - show them always
                    found = true;
                }
            }
        }

        if (found) {
            switch(currentItem.module) {
            case ModuleImage:
                ensureVisible(picture);
                picture->loadFromUrl( currentItem.url );
                break;
            case ModuleWeb:
                ensureVisible(web);
                web->load(currentItem.url);
                break;
            case ModuleVideo:
                ensureVisible(video);
                video->loadUrl(currentItem.url);
                break;
            case ModuleSvg:
                ensureVisible(svg);
                svg->load(currentItem.url);
                break;
            default:
                // ModuleUnknown - what should we do??
                break;
            }

        } 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)
{
    layout->setCurrentWidget(widget);    
}
1	#include "MainView.h"
2	#include <QApplication>
3	#include <QPushButton>
4	#include <QLabel>
5	#include <QStackedLayout>
6	#include <QSvgWidget>
7
8	#include <QTimer>
9	#include <QKeyEvent>
10	#include <QSettings>
11	#include <QMessageBox>
12
13	#include "MyWebView.h"
14	#include "clientsiderender.h"
15	#include "pictureview.h"
16	#include "videoview.h"
17
18	#include "httpwrapper.h"
19
20
21
22	MainView::MainView(QWidget* parent)
23	: QWidget(parent), timer(0)
24	{
25	loadSettings();
26
27	if ( currentMode == ModeXml) {
28	xmlUrl = url + "?screen_id=" + screenid;
29	qDebug() << "Starting XML mode";
30	qDebug() << "xmlUrl" << xmlUrl;
31	}
32
33	if (currentMode == ModeSimpleWeb){
34	qDebug() << "Starting plain browser mode";
35	}
36
37	if (currentMode == ModeLocal ) {
38	qDebug() << "Starting local mode";
39	qDebug() << "path" << path;
40
41	readLocalFiles();
42	}
43
44	this->resize(400,400);
45	this->setWindowState( Qt::WindowFullScreen );
46	this->grabKeyboard();
47
48	qApp->setOverrideCursor( QCursor( Qt::BlankCursor) );
49
50	render = new ClientSideRender(this);
51
52	web = new MyWebView(this);
53
54	picture = new PictureView(this);
55
56	video = new VideoView(this);
57
58	svg = new QSvgWidget(this);
59
60	layout = new QStackedLayout();
61	layout->addWidget(web);
62	layout->addWidget(render);
63	layout->addWidget(picture);
64	layout->addWidget(video);
65	layout->addWidget(svg);
66	layout->setContentsMargins(0,0,0,0);
67	setLayout(layout);
68
69	if (currentMode == ModeSimpleWeb) {
70	web->setVisible(true);
71	web->start(url,screenid);
72	}
73
74
75	qDebug() << "Starting timer...";
76	timer = new QTimer(this);
77	connect(timer, SIGNAL(timeout() ), this, SLOT(onTimer() ));
78	timer->start(100);
79	}
80
81	void MainView::loadSettings()
82	{
83	settings = new QSettings("Caddi", "infoscreen");
84
85	qDebug() << "Loading settings" << settings->fileName();
86
87	QString mode = settings->value("mode").toString().toLower();
88	if (mode == "simpleweb") {
89	currentMode = ModeSimpleWeb;
90	} else if (mode == "xml") {
91	currentMode = ModeXml;
92	} else if (mode == "local") {
93	currentMode = ModeLocal;
94	} else {
95	currentMode = ModeNone;
96	QMessageBox::warning(this, "infoscreen", "no operation mode set or mode given an invalid value");
97	exit(1);
98	}
99
100
101	if (currentMode == ModeSimpleWeb \|\| currentMode == ModeXml) {
102	url = settings->value("url").toString();
103	screenid = settings->value("screenid").toString();
104	if (url == "" \|\| screenid == "") {
105	QMessageBox::warning(this,"infoscreen","Could not find url or screenid in config file " + settings->fileName());
106
107	exit(1); //Normal qApp->exit() doesn't terminate the init sequence so use std C exit function
108	}
109	}
110
111	if (currentMode == ModeLocal) {
112	path = settings->value("path").toString();
113
114	if (path == "") {
115	QMessageBox::warning(this,"infoscreen","Could not find path in config file " + settings->fileName());
116	exit(1);
117	}
118	}
119	}
120
121	void MainView::closeEvent ( QCloseEvent * event )
122	{
123	Q_UNUSED(event);
124	exit(0); //force application shutdown
125	}
126
127	void MainView::keyPressEvent ( QKeyEvent* event )
128	{
129	int key = event->key();
130	if (key == ' ' \|\| key == Qt::Key_Return \|\| key == Qt::Key_Enter) {
131	close();
132	}
133	}
134
135	void MainView::onTimer()
136	{
137	qDebug() << "onTimer()";
138	screenManager.timerTick();
139
140	if (currentMode == ModeXml) {
141	readXml();
142	}
143
144	if (currentMode == ModeXml \|\| currentMode == ModeLocal) {
145	switchScreens();
146	}
147	}
148
149
150	void MainView::readLocalFiles()
151	{
152	QDir dir(path);
153	if (! dir.exists()) {
154	QMessageBox::warning(this,"infoscreen","Local Source directory not found: " + path);
155	exit(1);
156	}
157	QFileInfoList files = dir.entryInfoList(QDir::Files, QDir::Name); //only files, sort by name
158
159	for (int i=0; i<files.size(); ++i) {
160	QFileInfo file = files[i];
161	qDebug() << "Found" << file.fileName();
162
163	ScreenItem item;
164	item.url = file.filePath();
165	item.module = ModuleUnknown;
166
167	QString ext = file.suffix().toLower();
168	if (ext == "avi" \|\| ext == "mpg" \|\| ext == "mpeg") {
169	item.module = ModuleVideo;
170	item.runtime = 1;
171	}
172
173	if (ext == "jpg" \|\| ext == "jpeg" \|\| ext == "png" ) {
174	item.module = ModuleImage;
175	item.runtime = 10;
176	}
177
178	if (ext == "svg") {
179	item.module = ModuleSvg;
180	item.runtime = 10;
181	}
182
183	if (ext == "htm" \|\| ext == "html") {
184	item.module = ModuleWeb;
185	item.runtime = 10;
186	}
187
188	if (item.module != ModuleUnknown) { //no need to enqueue unknown modules
189	screenItems.push_back( item );
190	}
191
192	}
193
194	qDebug() << "Found " << screenItems.size() << " playable items";
195	}
196
197
198	bool MainView::readXml()
199	{
200	const int TIMEOUT = 30601000; // 30 minutter
201	if ( lastXml.isNull() \|\| lastXml.elapsed() > TIMEOUT) {
202
203
204	bool res = xmlHandler.readXml( xmlUrl );
205
206	lastXml = QTime::currentTime();
207
208	screenItems = xmlHandler.getScreenSet();
209
210	if ( currentItemIdx >= screenItems.size() )
211	currentItemIdx = screenItems.size()-1; //avoid overflow
212
213
214	return true;
215	} else {
216	return false;
217	}
218	}
219
220	void MainView::switchScreens()
221	{
222	if (video->isVisible() && video->isPlaying() ) {
223	return; //wait until current clip has finished
224	}
225
226	if (lastScreenSwitch.isNull() \|\| lastScreenSwitch.elapsed() > (currentItem.runtime*1000)) {
227
228	QTime now = QTime::currentTime();
229	if (lastScreenSwitch.isNull())
230	currentItemIdx = -1;
231
232	bool found = false;
233	int tries = 0;
234
235	if (screenItems.size() > 0) { //only try if we have a any screens
236	while (found == false && tries <= screenItems.size()) { //find next with valid display time
237	tries++;
238	currentItemIdx = (currentItemIdx+1) % screenItems.size();
239	currentItem = screenItems.at(currentItemIdx);
240
241	if (currentItem.start.isValid() && currentItem.stop.isValid()) {
242	if (currentItem.start <= now && now <= currentItem.stop )
243	found = true;
244	} else { // if start or stop time was invalid - show them always
245	found = true;
246	}
247	}
248	}
249
250	if (found) {
251	switch(currentItem.module) {
252	case ModuleImage:
253	ensureVisible(picture);
254	picture->loadFromUrl( currentItem.url );
255	break;
256	case ModuleWeb:
257	ensureVisible(web);
258	web->load(currentItem.url);
259	break;
260	case ModuleVideo:
261	ensureVisible(video);
262	video->loadUrl(currentItem.url);
263	break;
264	case ModuleSvg:
265	ensureVisible(svg);
266	svg->load(currentItem.url);
267	break;
268	default:
269	// ModuleUnknown - what should we do??
270	break;
271	}
272
273	} else {
274	qDebug() << "no screen";
275	errorInfoScreen("Der er ingen information at vise");
276	}
277	lastScreenSwitch = QTime::currentTime();
278
279	}
280	}
281
282	void MainView::errorInfoScreen(QString msg)
283	{
284	ensureVisible(web);
285	web->setHtml("<html>\
286	<body text='#505050' bgcolor='#000000'>\
287	<table width='100%' height='100%'><tr><td align='center' valign='middel'><h1>" + msg+ "</h1></td></tr></table>\
288	</body></html>");
289	}
290
291	void MainView::ensureVisible(QWidget* widget)
292	{
293	layout->setCurrentWidget(widget);
294	}