projects/infoscreen/MainView.cpp

#include "MainView.h"
#include <QApplication>
#include <QPushButton>
#include <QLabel>
#include <QVBoxLayout>
#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";
        web->setVisible(true);
        web->start(url,screenid);
    }

    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);
    render->setVisible( false );

    web = new MyWebView(this);
    web->setVisible( false);

    picture = new PictureView(this);
    picture->setVisible( false );

    video = new VideoView(this);
    video->setVisible(false);

    svg = new QSvgWidget(this);
    svg->setVisible(false);

    QVBoxLayout* layout = new QVBoxLayout();
    layout->addWidget(web,1);
    layout->addWidget(render,1);
    layout->addWidget(picture,1);
    layout->addWidget(video,1);
    layout->addWidget(svg,1);
    layout->addStretch();
    layout->setContentsMargins(0,0,0,0);
    setLayout(layout);


    if (currentMode == ModeXml || currentMode == ModeLocal) {
        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()
{
    screenManager.timerTick();

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

    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 (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)
{
    if (! widget->isVisible()) {
        hideAll();
        widget->setVisible(true);
    }
}

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