projects/infoscreen/mainview.cpp

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

#include <QDir>
#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(640,480);
    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);

    if (showClock == true) {
        clockOverlay = new ClockOverlay(this);
        clockOverlay->move(10,10);
        clockOverlay->resize(150,75);
    }

    
    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();
    }

    showClock = settings->value("showclock").toBool();

    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();
    }

    if (key == 'f' || key == 'F') {
        Qt::WindowStates current = this->windowState();
        if (current == Qt::WindowFullScreen) {
            this->setWindowState(Qt::WindowActive);
        } else {
            this->setWindowState(Qt::WindowFullScreen);
        }
    }

}  

void MainView::onTimer()
{
    if (enableScreenManager == true) {
        screenManager->timerTick();
    }

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

    if (currentMode == ModeXml || currentMode == ModeLocal) {
        switchScreens();
    }
    if (showClock == true) {
        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);
    QString html("<html><body text='#505050' bgcolor='#000000'>");
    html.append("<table width='100%' height='100%'><tr><td align='center' valign='middel'><h1>")
        .append(msg)
        .append("</h1></td></tr></table></body></html>");
    web->setHtml(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 <QDir>
9	#include <QTimer>
10	#include <QKeyEvent>
11	#include <QSettings>
12	#include <QMessageBox>
13
14	#include "webview.h"
15	#include "clientsiderender.h"
16	#include "pictureview.h"
17	#include "videoview.h"
18	#include "clockoverlay.h"
19	#include "httpwrapper.h"
20	#include "screenmanager.h"
21
22
23
24	MainView::MainView(QWidget* parent)
25	: QWidget(parent), timer(0)
26	{
27	loadSettings();
28
29	if ( currentMode == ModeXml) {
30	xmlUrl = url + "?screen_id=" + screenid;
31	qDebug() << "Starting XML mode";
32	qDebug() << "xmlUrl" << xmlUrl;
33	qDebug() << "xmlInterval" << xmlInterval/(60*1000);
34	}
35
36	if (currentMode == ModeSimpleWeb){
37	qDebug() << "Starting plain browser mode";
38	}
39
40	if (currentMode == ModeLocal ) {
41	qDebug() << "Starting local mode";
42	qDebug() << "path" << path;
43
44	readLocalFiles();
45	}
46
47	this->resize(640,480);
48	this->setWindowState( Qt::WindowFullScreen );
49	this->grabKeyboard();
50
51	qApp->setOverrideCursor( QCursor( Qt::BlankCursor) );
52
53	render = new ClientSideRender(this);
54
55	web = new WebView(this);
56
57	picture = new PictureView(this);
58
59	video = new VideoView(this);
60
61	svg = new QSvgWidget(this);
62
63	layout = new QStackedLayout();
64	layout->addWidget(web);
65	layout->addWidget(render);
66	layout->addWidget(picture);
67	layout->addWidget(video);
68	layout->addWidget(svg);
69	layout->setContentsMargins(0,0,0,0);
70	setLayout(layout);
71
72	if (showClock == true) {
73	clockOverlay = new ClockOverlay(this);
74	clockOverlay->move(10,10);
75	clockOverlay->resize(150,75);
76	}
77
78
79
80	if (currentMode == ModeSimpleWeb) {
81	web->setVisible(true);
82	web->start(url,screenid);
83	}
84
85	if (enableScreenManager) {
86	screenManager = new ScreenManager(screenManagerOn, screenManagerOff);
87	} else {
88	qDebug() << "ScreenManager is disabled";
89	}
90
91
92	qDebug() << "Starting timer...";
93	timer = new QTimer(this);
94	connect(timer, SIGNAL(timeout() ), this, SLOT(onTimer() ));
95	timer->start(100);
96	}
97
98	void MainView::loadSettings()
99	{
100	settings = new QSettings("Caddi", "infoscreen");
101
102	qDebug() << "Loading settings" << settings->fileName();
103
104	QString mode = settings->value("mode").toString().toLower();
105	if (mode == "simpleweb") {
106	currentMode = ModeSimpleWeb;
107	} else if (mode == "xml") {
108	currentMode = ModeXml;
109	} else if (mode == "local") {
110	currentMode = ModeLocal;
111	} else {
112	currentMode = ModeNone;
113	QMessageBox::warning(this, "infoscreen", "no operation mode set or mode given an invalid value");
114	exit(1);
115	}
116
117	enableScreenManager = settings->value("enablescreenmanager").toBool();
118	if (enableScreenManager) {
119	screenManagerOn = settings->value("screenmanager_on").toTime();
120	screenManagerOff = settings->value("screenmanager_off").toTime();
121	}
122
123	showClock = settings->value("showclock").toBool();
124
125	xmlInterval = settings->value("xmlinterval", 30).toInt();
126	xmlInterval = (xmlInterval * 60 * 1000); //convert to milliseconds
127
128
129	if (currentMode == ModeSimpleWeb \|\| currentMode == ModeXml) {
130	url = settings->value("url").toString();
131	screenid = settings->value("screenid").toString();
132	if (url == "" \|\| screenid == "") {
133	QMessageBox::warning(this,"infoscreen","Could not find url or screenid in config file " + settings->fileName());
134
135	exit(1); //Normal qApp->exit() doesn't terminate the init sequence so use std C exit function
136	}
137	}
138
139	if (currentMode == ModeLocal) {
140	path = settings->value("path").toString();
141
142	if (path == "") {
143	QMessageBox::warning(this,"infoscreen","Could not find path in config file " + settings->fileName());
144	exit(1);
145	}
146	}
147	}
148
149	void MainView::closeEvent ( QCloseEvent * event )
150	{
151	Q_UNUSED(event);
152	exit(0); //force application shutdown
153	}
154
155	void MainView::keyPressEvent ( QKeyEvent* event )
156	{
157	int key = event->key();
158	if (key == ' ' \|\| key == Qt::Key_Return \|\| key == Qt::Key_Enter) {
159	close();
160	}
161
162	if (key == 'f' \|\| key == 'F') {
163	Qt::WindowStates current = this->windowState();
164	if (current == Qt::WindowFullScreen) {
165	this->setWindowState(Qt::WindowActive);
166	} else {
167	this->setWindowState(Qt::WindowFullScreen);
168	}
169	}
170
171	}
172
173	void MainView::onTimer()
174	{
175	if (enableScreenManager == true) {
176	screenManager->timerTick();
177	}
178
179	if (currentMode == ModeXml) {
180	readXml();
181	}
182
183	if (currentMode == ModeXml \|\| currentMode == ModeLocal) {
184	switchScreens();
185	}
186	if (showClock == true) {
187	clockOverlay->timerTick();
188	}
189	}
190
191
192	void MainView::readLocalFiles()
193	{
194	QDir dir(path);
195	if (! dir.exists()) {
196	QMessageBox::warning(this,"infoscreen","Local Source directory not found: " + path);
197	exit(1);
198	}
199	QFileInfoList files = dir.entryInfoList(QDir::Files, QDir::Name); //only files, sort by name
200
201	for (int i=0; i<files.size(); ++i) {
202	QFileInfo file = files[i];
203	qDebug() << "Found" << file.fileName();
204
205	ScreenItem item;
206	item.url = file.filePath();
207	item.module = ModuleUnknown;
208
209	QString ext = file.suffix().toLower();
210	if (ext == "avi" \|\| ext == "mpg" \|\| ext == "mpeg") {
211	item.module = ModuleVideo;
212	item.runtime = 1;
213	}
214
215	if (ext == "jpg" \|\| ext == "jpeg" \|\| ext == "png" ) {
216	item.module = ModuleImage;
217	item.runtime = 10;
218	}
219
220	if (ext == "svg") {
221	item.module = ModuleSvg;
222	item.runtime = 10;
223	}
224
225	if (ext == "htm" \|\| ext == "html") {
226	item.module = ModuleWeb;
227	item.runtime = 10;
228	}
229
230	if (item.module != ModuleUnknown) { //no need to enqueue unknown modules
231	screenItems.push_back( item );
232	}
233
234	}
235
236	qDebug() << "Found " << screenItems.size() << " playable items";
237	}
238
239
240	bool MainView::readXml()
241	{
242	if ( lastXml.isNull() \|\| lastXml.elapsed() > xmlInterval) {
243	qDebug() << "Reading XML";
244
245
246	bool res = xmlHandler.readXml( xmlUrl );
247
248	lastXml = QTime::currentTime();
249
250	screenItems = xmlHandler.getScreenSet();
251
252	if ( currentItemIdx >= screenItems.size() )
253	currentItemIdx = screenItems.size()-1; //avoid overflow
254
255
256	return true;
257	} else {
258	return false;
259	}
260	}
261
262	void MainView::switchScreens()
263	{
264	if (video->isVisible() && video->isPlaying() ) {
265	return; //wait until current clip has finished
266	}
267
268	if (lastScreenSwitch.isNull() \|\| lastScreenSwitch.elapsed() > (currentItem.runtime*1000)) {
269	QTime now = QTime::currentTime();
270	if (lastScreenSwitch.isNull())
271	currentItemIdx = -1;
272
273	bool found = false;
274	int tries = 0;
275
276	if (screenItems.size() > 0) { //only try if we have a any screens
277	while (found == false && tries <= screenItems.size()) { //find next with valid display time
278	tries++;
279	currentItemIdx = (currentItemIdx+1) % screenItems.size();
280	currentItem = screenItems.at(currentItemIdx);
281
282	if (currentItem.start.isValid() && currentItem.stop.isValid()) {
283	if (currentItem.start <= now && now <= currentItem.stop )
284	found = true;
285	} else { // if start or stop time was invalid - show them always
286	found = true;
287	}
288	}
289	}
290
291	if (found) {
292	switch(currentItem.module) {
293	case ModuleImage:
294	ensureVisible(picture);
295	picture->loadFromUrl( currentItem.url );
296	break;
297	case ModuleWeb:
298	ensureVisible(web);
299	web->load(currentItem.url);
300	break;
301	case ModuleVideo:
302	ensureVisible(video);
303	video->loadUrl(currentItem.url);
304	break;
305	case ModuleSvg:
306	ensureVisible(svg);
307	svg->load(currentItem.url);
308	break;
309	default:
310	// ModuleUnknown - what should we do??
311	break;
312	}
313
314	} else {
315	errorInfoScreen("Der er ingen information at vise");
316	currentItem = ScreenItem();
317	currentItem.runtime = 60; //switch screens again in 1 minute
318	}
319	lastScreenSwitch = QTime::currentTime();
320
321	}
322	}
323
324	void MainView::errorInfoScreen(QString msg)
325	{
326	ensureVisible(web);
327	QString html("<html><body text='#505050' bgcolor='#000000'>");
328	html.append("<table width='100%' height='100%'><tr><td align='center' valign='middel'><h1>")
329	.append(msg)
330	.append("</h1></td></tr></table></body></html>");
331	web->setHtml(html);
332	}
333
334	void MainView::ensureVisible(QWidget* widget)
335	{
336	layout->setCurrentWidget(widget);
337	}