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