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"
#include "screenmanager.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);
    }

    if (enableScreenManager) {
        screenManager = new ScreenManager();
    } else {
        qDebug() << "ScreenManager is disabled";
    }


    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);
    }

    enableScreenManager = settings->value("enableScreenManager").toBool();


    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()
{
    if (enableScreenManager == true) {
        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 {
            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	#include "screenmanager.h"
20
21
22
23	MainView::MainView(QWidget* parent)
24	: QWidget(parent), timer(0)
25	{
26	loadSettings();
27
28	if ( currentMode == ModeXml) {
29	xmlUrl = url + "?screen_id=" + screenid;
30	qDebug() << "Starting XML mode";
31	qDebug() << "xmlUrl" << xmlUrl;
32	}
33
34	if (currentMode == ModeSimpleWeb){
35	qDebug() << "Starting plain browser mode";
36	}
37
38	if (currentMode == ModeLocal ) {
39	qDebug() << "Starting local mode";
40	qDebug() << "path" << path;
41
42	readLocalFiles();
43	}
44
45	this->resize(400,400);
46	this->setWindowState( Qt::WindowFullScreen );
47	this->grabKeyboard();
48
49	qApp->setOverrideCursor( QCursor( Qt::BlankCursor) );
50
51	render = new ClientSideRender(this);
52
53	web = new MyWebView(this);
54
55	picture = new PictureView(this);
56
57	video = new VideoView(this);
58
59	svg = new QSvgWidget(this);
60
61	layout = new QStackedLayout();
62	layout->addWidget(web);
63	layout->addWidget(render);
64	layout->addWidget(picture);
65	layout->addWidget(video);
66	layout->addWidget(svg);
67	layout->setContentsMargins(0,0,0,0);
68	setLayout(layout);
69
70	if (currentMode == ModeSimpleWeb) {
71	web->setVisible(true);
72	web->start(url,screenid);
73	}
74
75	if (enableScreenManager) {
76	screenManager = new ScreenManager();
77	} else {
78	qDebug() << "ScreenManager is disabled";
79	}
80
81
82	qDebug() << "Starting timer...";
83	timer = new QTimer(this);
84	connect(timer, SIGNAL(timeout() ), this, SLOT(onTimer() ));
85	timer->start(100);
86	}
87
88	void MainView::loadSettings()
89	{
90	settings = new QSettings("Caddi", "infoscreen");
91
92	qDebug() << "Loading settings" << settings->fileName();
93
94	QString mode = settings->value("mode").toString().toLower();
95	if (mode == "simpleweb") {
96	currentMode = ModeSimpleWeb;
97	} else if (mode == "xml") {
98	currentMode = ModeXml;
99	} else if (mode == "local") {
100	currentMode = ModeLocal;
101	} else {
102	currentMode = ModeNone;
103	QMessageBox::warning(this, "infoscreen", "no operation mode set or mode given an invalid value");
104	exit(1);
105	}
106
107	enableScreenManager = settings->value("enableScreenManager").toBool();
108
109
110	if (currentMode == ModeSimpleWeb \|\| currentMode == ModeXml) {
111	url = settings->value("url").toString();
112	screenid = settings->value("screenid").toString();
113	if (url == "" \|\| screenid == "") {
114	QMessageBox::warning(this,"infoscreen","Could not find url or screenid in config file " + settings->fileName());
115
116	exit(1); //Normal qApp->exit() doesn't terminate the init sequence so use std C exit function
117	}
118	}
119
120	if (currentMode == ModeLocal) {
121	path = settings->value("path").toString();
122
123	if (path == "") {
124	QMessageBox::warning(this,"infoscreen","Could not find path in config file " + settings->fileName());
125	exit(1);
126	}
127	}
128	}
129
130	void MainView::closeEvent ( QCloseEvent * event )
131	{
132	Q_UNUSED(event);
133	exit(0); //force application shutdown
134	}
135
136	void MainView::keyPressEvent ( QKeyEvent* event )
137	{
138	int key = event->key();
139	if (key == ' ' \|\| key == Qt::Key_Return \|\| key == Qt::Key_Enter) {
140	close();
141	}
142	}
143
144	void MainView::onTimer()
145	{
146	if (enableScreenManager == true) {
147	screenManager->timerTick();
148	}
149
150	if (currentMode == ModeXml) {
151	readXml();
152	}
153
154	if (currentMode == ModeXml \|\| currentMode == ModeLocal) {
155	switchScreens();
156	}
157	}
158
159
160	void MainView::readLocalFiles()
161	{
162	QDir dir(path);
163	if (! dir.exists()) {
164	QMessageBox::warning(this,"infoscreen","Local Source directory not found: " + path);
165	exit(1);
166	}
167	QFileInfoList files = dir.entryInfoList(QDir::Files, QDir::Name); //only files, sort by name
168
169	for (int i=0; i<files.size(); ++i) {
170	QFileInfo file = files[i];
171	qDebug() << "Found" << file.fileName();
172
173	ScreenItem item;
174	item.url = file.filePath();
175	item.module = ModuleUnknown;
176
177	QString ext = file.suffix().toLower();
178	if (ext == "avi" \|\| ext == "mpg" \|\| ext == "mpeg") {
179	item.module = ModuleVideo;
180	item.runtime = 1;
181	}
182
183	if (ext == "jpg" \|\| ext == "jpeg" \|\| ext == "png" ) {
184	item.module = ModuleImage;
185	item.runtime = 10;
186	}
187
188	if (ext == "svg") {
189	item.module = ModuleSvg;
190	item.runtime = 10;
191	}
192
193	if (ext == "htm" \|\| ext == "html") {
194	item.module = ModuleWeb;
195	item.runtime = 10;
196	}
197
198	if (item.module != ModuleUnknown) { //no need to enqueue unknown modules
199	screenItems.push_back( item );
200	}
201
202	}
203
204	qDebug() << "Found " << screenItems.size() << " playable items";
205	}
206
207
208	bool MainView::readXml()
209	{
210	const int TIMEOUT = 30601000; // 30 minutter
211	if ( lastXml.isNull() \|\| lastXml.elapsed() > TIMEOUT) {
212
213
214	bool res = xmlHandler.readXml( xmlUrl );
215
216	lastXml = QTime::currentTime();
217
218	screenItems = xmlHandler.getScreenSet();
219
220	if ( currentItemIdx >= screenItems.size() )
221	currentItemIdx = screenItems.size()-1; //avoid overflow
222
223
224	return true;
225	} else {
226	return false;
227	}
228	}
229
230	void MainView::switchScreens()
231	{
232	if (video->isVisible() && video->isPlaying() ) {
233	return; //wait until current clip has finished
234	}
235
236	if (lastScreenSwitch.isNull() \|\| lastScreenSwitch.elapsed() > (currentItem.runtime*1000)) {
237
238	QTime now = QTime::currentTime();
239	if (lastScreenSwitch.isNull())
240	currentItemIdx = -1;
241
242	bool found = false;
243	int tries = 0;
244
245	if (screenItems.size() > 0) { //only try if we have a any screens
246	while (found == false && tries <= screenItems.size()) { //find next with valid display time
247	tries++;
248	currentItemIdx = (currentItemIdx+1) % screenItems.size();
249	currentItem = screenItems.at(currentItemIdx);
250
251	if (currentItem.start.isValid() && currentItem.stop.isValid()) {
252	if (currentItem.start <= now && now <= currentItem.stop )
253	found = true;
254	} else { // if start or stop time was invalid - show them always
255	found = true;
256	}
257	}
258	}
259
260	if (found) {
261	switch(currentItem.module) {
262	case ModuleImage:
263	ensureVisible(picture);
264	picture->loadFromUrl( currentItem.url );
265	break;
266	case ModuleWeb:
267	ensureVisible(web);
268	web->load(currentItem.url);
269	break;
270	case ModuleVideo:
271	ensureVisible(video);
272	video->loadUrl(currentItem.url);
273	break;
274	case ModuleSvg:
275	ensureVisible(svg);
276	svg->load(currentItem.url);
277	break;
278	default:
279	// ModuleUnknown - what should we do??
280	break;
281	}
282
283	} else {
284	errorInfoScreen("Der er ingen information at vise");
285	}
286	lastScreenSwitch = QTime::currentTime();
287
288	}
289	}
290
291	void MainView::errorInfoScreen(QString msg)
292	{
293	ensureVisible(web);
294	web->setHtml("<html>\
295	<body text='#505050' bgcolor='#000000'>\
296	<table width='100%' height='100%'><tr><td align='center' valign='middel'><h1>" + msg+ "</h1></td></tr></table>\
297	</body></html>");
298	}
299
300	void MainView::ensureVisible(QWidget* widget)
301	{
302	layout->setCurrentWidget(widget);
303	}