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 "webview.h"
#include "clientsiderender.h"
#include "pictureview.h"
#include "videoview.h"
#include "clockoverlay.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;
        qDebug() << "xmlInterval" << xmlInterval/(60*1000);
    }

    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 WebView(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);

    clockOverlay = new ClockOverlay(this);
    clockOverlay->move(10,10);
    clockOverlay->resize(100,50);

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

    if (enableScreenManager) {
        screenManager = new ScreenManager(screenManagerOn, screenManagerOff);
    } 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 (enableScreenManager) {
        screenManagerOn = settings->value("screenmanager_on").toTime();
        screenManagerOff = settings->value("screenmanager_off").toTime();
    }

    xmlInterval = settings->value("xmlinterval", 30).toInt();
    xmlInterval = (xmlInterval * 60 * 1000); //convert to milliseconds


    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();
    }
    clockOverlay->timerTick();
}


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()
{
    if ( lastXml.isNull() || lastXml.elapsed() > xmlInterval) {
        qDebug() << "Reading XML";


        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");
            currentItem = ScreenItem();
            currentItem.runtime = 60; //switch screens again in 1 minute
        }
        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 "webview.h"
14	#include "clientsiderender.h"
15	#include "pictureview.h"
16	#include "videoview.h"
17	#include "clockoverlay.h"
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	qDebug() << "xmlInterval" << xmlInterval/(60*1000);
33	}
34
35	if (currentMode == ModeSimpleWeb){
36	qDebug() << "Starting plain browser mode";
37	}
38
39	if (currentMode == ModeLocal ) {
40	qDebug() << "Starting local mode";
41	qDebug() << "path" << path;
42
43	readLocalFiles();
44	}
45
46	this->resize(400,400);
47	this->setWindowState( Qt::WindowFullScreen );
48	this->grabKeyboard();
49
50	qApp->setOverrideCursor( QCursor( Qt::BlankCursor) );
51
52	render = new ClientSideRender(this);
53
54	web = new WebView(this);
55
56	picture = new PictureView(this);
57
58	video = new VideoView(this);
59
60	svg = new QSvgWidget(this);
61
62	layout = new QStackedLayout();
63	layout->addWidget(web);
64	layout->addWidget(render);
65	layout->addWidget(picture);
66	layout->addWidget(video);
67	layout->addWidget(svg);
68	layout->setContentsMargins(0,0,0,0);
69	setLayout(layout);
70
71	clockOverlay = new ClockOverlay(this);
72	clockOverlay->move(10,10);
73	clockOverlay->resize(100,50);
74
75
76
77	if (currentMode == ModeSimpleWeb) {
78	web->setVisible(true);
79	web->start(url,screenid);
80	}
81
82	if (enableScreenManager) {
83	screenManager = new ScreenManager(screenManagerOn, screenManagerOff);
84	} else {
85	qDebug() << "ScreenManager is disabled";
86	}
87
88
89	qDebug() << "Starting timer...";
90	timer = new QTimer(this);
91	connect(timer, SIGNAL(timeout() ), this, SLOT(onTimer() ));
92	timer->start(100);
93	}
94
95	void MainView::loadSettings()
96	{
97	settings = new QSettings("Caddi", "infoscreen");
98
99	qDebug() << "Loading settings" << settings->fileName();
100
101	QString mode = settings->value("mode").toString().toLower();
102	if (mode == "simpleweb") {
103	currentMode = ModeSimpleWeb;
104	} else if (mode == "xml") {
105	currentMode = ModeXml;
106	} else if (mode == "local") {
107	currentMode = ModeLocal;
108	} else {
109	currentMode = ModeNone;
110	QMessageBox::warning(this, "infoscreen", "no operation mode set or mode given an invalid value");
111	exit(1);
112	}
113
114	enableScreenManager = settings->value("enablescreenmanager").toBool();
115	if (enableScreenManager) {
116	screenManagerOn = settings->value("screenmanager_on").toTime();
117	screenManagerOff = settings->value("screenmanager_off").toTime();
118	}
119
120	xmlInterval = settings->value("xmlinterval", 30).toInt();
121	xmlInterval = (xmlInterval * 60 * 1000); //convert to milliseconds
122
123
124	if (currentMode == ModeSimpleWeb \|\| currentMode == ModeXml) {
125	url = settings->value("url").toString();
126	screenid = settings->value("screenid").toString();
127	if (url == "" \|\| screenid == "") {
128	QMessageBox::warning(this,"infoscreen","Could not find url or screenid in config file " + settings->fileName());
129
130	exit(1); //Normal qApp->exit() doesn't terminate the init sequence so use std C exit function
131	}
132	}
133
134	if (currentMode == ModeLocal) {
135	path = settings->value("path").toString();
136
137	if (path == "") {
138	QMessageBox::warning(this,"infoscreen","Could not find path in config file " + settings->fileName());
139	exit(1);
140	}
141	}
142	}
143
144	void MainView::closeEvent ( QCloseEvent * event )
145	{
146	Q_UNUSED(event);
147	exit(0); //force application shutdown
148	}
149
150	void MainView::keyPressEvent ( QKeyEvent* event )
151	{
152	int key = event->key();
153	if (key == ' ' \|\| key == Qt::Key_Return \|\| key == Qt::Key_Enter) {
154	close();
155	}
156	}
157
158	void MainView::onTimer()
159	{
160	if (enableScreenManager == true) {
161	screenManager->timerTick();
162	}
163
164	if (currentMode == ModeXml) {
165	readXml();
166	}
167
168	if (currentMode == ModeXml \|\| currentMode == ModeLocal) {
169	switchScreens();
170	}
171	clockOverlay->timerTick();
172	}
173
174
175	void MainView::readLocalFiles()
176	{
177	QDir dir(path);
178	if (! dir.exists()) {
179	QMessageBox::warning(this,"infoscreen","Local Source directory not found: " + path);
180	exit(1);
181	}
182	QFileInfoList files = dir.entryInfoList(QDir::Files, QDir::Name); //only files, sort by name
183
184	for (int i=0; i<files.size(); ++i) {
185	QFileInfo file = files[i];
186	qDebug() << "Found" << file.fileName();
187
188	ScreenItem item;
189	item.url = file.filePath();
190	item.module = ModuleUnknown;
191
192	QString ext = file.suffix().toLower();
193	if (ext == "avi" \|\| ext == "mpg" \|\| ext == "mpeg") {
194	item.module = ModuleVideo;
195	item.runtime = 1;
196	}
197
198	if (ext == "jpg" \|\| ext == "jpeg" \|\| ext == "png" ) {
199	item.module = ModuleImage;
200	item.runtime = 10;
201	}
202
203	if (ext == "svg") {
204	item.module = ModuleSvg;
205	item.runtime = 10;
206	}
207
208	if (ext == "htm" \|\| ext == "html") {
209	item.module = ModuleWeb;
210	item.runtime = 10;
211	}
212
213	if (item.module != ModuleUnknown) { //no need to enqueue unknown modules
214	screenItems.push_back( item );
215	}
216
217	}
218
219	qDebug() << "Found " << screenItems.size() << " playable items";
220	}
221
222
223	bool MainView::readXml()
224	{
225	if ( lastXml.isNull() \|\| lastXml.elapsed() > xmlInterval) {
226	qDebug() << "Reading XML";
227
228
229	bool res = xmlHandler.readXml( xmlUrl );
230
231	lastXml = QTime::currentTime();
232
233	screenItems = xmlHandler.getScreenSet();
234
235	if ( currentItemIdx >= screenItems.size() )
236	currentItemIdx = screenItems.size()-1; //avoid overflow
237
238
239	return true;
240	} else {
241	return false;
242	}
243	}
244
245	void MainView::switchScreens()
246	{
247	if (video->isVisible() && video->isPlaying() ) {
248	return; //wait until current clip has finished
249	}
250
251	if (lastScreenSwitch.isNull() \|\| lastScreenSwitch.elapsed() > (currentItem.runtime*1000)) {
252	QTime now = QTime::currentTime();
253	if (lastScreenSwitch.isNull())
254	currentItemIdx = -1;
255
256	bool found = false;
257	int tries = 0;
258
259	if (screenItems.size() > 0) { //only try if we have a any screens
260	while (found == false && tries <= screenItems.size()) { //find next with valid display time
261	tries++;
262	currentItemIdx = (currentItemIdx+1) % screenItems.size();
263	currentItem = screenItems.at(currentItemIdx);
264
265	if (currentItem.start.isValid() && currentItem.stop.isValid()) {
266	if (currentItem.start <= now && now <= currentItem.stop )
267	found = true;
268	} else { // if start or stop time was invalid - show them always
269	found = true;
270	}
271	}
272	}
273
274	if (found) {
275	switch(currentItem.module) {
276	case ModuleImage:
277	ensureVisible(picture);
278	picture->loadFromUrl( currentItem.url );
279	break;
280	case ModuleWeb:
281	ensureVisible(web);
282	web->load(currentItem.url);
283	break;
284	case ModuleVideo:
285	ensureVisible(video);
286	video->loadUrl(currentItem.url);
287	break;
288	case ModuleSvg:
289	ensureVisible(svg);
290	svg->load(currentItem.url);
291	break;
292	default:
293	// ModuleUnknown - what should we do??
294	break;
295	}
296
297	} else {
298	errorInfoScreen("Der er ingen information at vise");
299	currentItem = ScreenItem();
300	currentItem.runtime = 60; //switch screens again in 1 minute
301	}
302	lastScreenSwitch = QTime::currentTime();
303
304	}
305	}
306
307	void MainView::errorInfoScreen(QString msg)
308	{
309	ensureVisible(web);
310	web->setHtml("<html>\
311	<body text='#505050' bgcolor='#000000'>\
312	<table width='100%' height='100%'><tr><td align='center' valign='middel'><h1>" + msg+ "</h1></td></tr></table>\
313	</body></html>");
314	}
315
316	void MainView::ensureVisible(QWidget* widget)
317	{
318	layout->setCurrentWidget(widget);
319	}