projects/infoscreen/MainView.cpp

#include "MainView.h"
#include <QApplication>
#include <QPushButton>
#include <QLabel>
#include <QVBoxLayout>

#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);

    QVBoxLayout* layout = new QVBoxLayout();
    layout->addWidget(web,1);
    layout->addWidget(render,1);
    layout->addWidget(picture,1);
    layout->addWidget(video,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") {
            item.module = ModuleVideo;
            item.runtime = 1;
        }

        if (ext == "jpg" || ext == "jpeg") {
            item.module = ModuleImage;
            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) {

            if (currentItem.module == ModuleImage) {
                ensureVisible(picture);

                picture->loadFromUrl( currentItem.url );

            } else if (currentItem.module == ModuleWeb) {
                ensureVisible(web);
                web->load(currentItem.url);
            } else if (currentItem.module == ModuleVideo) {
                ensureVisible(video);
                video->loadUrl(currentItem.url);
            } else {
                // ModuleUnknown - what should we do??
            }

        } 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);
}
1	#include "MainView.h"
2	#include <QApplication>
3	#include <QPushButton>
4	#include <QLabel>
5	#include <QVBoxLayout>
6
7	#include <QTimer>
8	#include <QKeyEvent>
9	#include <QSettings>
10	#include <QMessageBox>
11
12	#include "MyWebView.h"
13	#include "clientsiderender.h"
14	#include "pictureview.h"
15	#include "videoview.h"
16
17	#include "httpwrapper.h"
18
19
20	MainView::MainView(QWidget* parent)
21	: QWidget(parent), timer(0)
22	{
23	loadSettings();
24
25	if ( currentMode == ModeXml) {
26	xmlUrl = url + "?screen_id=" + screenid;
27	qDebug() << "Starting XML mode";
28	qDebug() << "xmlUrl" << xmlUrl;
29	}
30
31	if (currentMode == ModeSimpleWeb){
32	qDebug() << "Starting plain browser mode";
33	web->setVisible(true);
34	web->start(url,screenid);
35	}
36
37	if (currentMode == ModeLocal ) {
38	qDebug() << "Starting local mode";
39	qDebug() << "path" << path;
40
41	readLocalFiles();
42	}
43
44	this->resize(400,400);
45	this->setWindowState( Qt::WindowFullScreen );
46	this->grabKeyboard();
47
48	qApp->setOverrideCursor( QCursor( Qt::BlankCursor) );
49
50	render = new ClientSideRender(this);
51	render->setVisible( false );
52
53	web = new MyWebView(this);
54	web->setVisible( false);
55
56	picture = new PictureView(this);
57	picture->setVisible( false );
58
59	video = new VideoView(this);
60	video->setVisible(false);
61
62	QVBoxLayout* layout = new QVBoxLayout();
63	layout->addWidget(web,1);
64	layout->addWidget(render,1);
65	layout->addWidget(picture,1);
66	layout->addWidget(video,1);
67	layout->addStretch();
68	layout->setContentsMargins(0,0,0,0);
69	setLayout(layout);
70
71
72	if (currentMode == ModeXml \|\| currentMode == ModeLocal) {
73	qDebug() << "Starting timer...";
74	timer = new QTimer(this);
75	connect(timer, SIGNAL(timeout() ), this, SLOT(onTimer() ));
76	timer->start(100);
77	}
78	}
79
80	void MainView::loadSettings()
81	{
82	settings = new QSettings("Caddi", "infoscreen");
83
84	qDebug() << "Loading settings" << settings->fileName();
85
86	QString mode = settings->value("mode").toString().toLower();
87	if (mode == "simpleweb") {
88	currentMode = ModeSimpleWeb;
89	} else if (mode == "xml") {
90	currentMode = ModeXml;
91	} else if (mode == "local") {
92	currentMode = ModeLocal;
93	} else {
94	currentMode = ModeNone;
95	QMessageBox::warning(this, "infoscreen", "no operation mode set or mode given an invalid value");
96	exit(1);
97	}
98
99
100	if (currentMode == ModeSimpleWeb \|\| currentMode == ModeXml) {
101	url = settings->value("url").toString();
102	screenid = settings->value("screenid").toString();
103	if (url == "" \|\| screenid == "") {
104	QMessageBox::warning(this,"infoscreen","Could not find url or screenid in config file " + settings->fileName());
105
106	exit(1); //Normal qApp->exit() doesn't terminate the init sequence so use std C exit function
107	}
108	}
109
110	if (currentMode == ModeLocal) {
111	path = settings->value("path").toString();
112
113	if (path == "") {
114	QMessageBox::warning(this,"infoscreen","Could not find path in config file " + settings->fileName());
115	exit(1);
116	}
117	}
118	}
119
120	void MainView::closeEvent ( QCloseEvent * event )
121	{
122	Q_UNUSED(event);
123	exit(0); //force application shutdown
124	}
125
126	void MainView::keyPressEvent ( QKeyEvent* event )
127	{
128	int key = event->key();
129	if (key == ' ' \|\| key == Qt::Key_Return \|\| key == Qt::Key_Enter) {
130	close();
131	}
132	}
133
134	void MainView::onTimer()
135	{
136	screenManager.timerTick();
137
138	if (currentMode == ModeXml) {
139	readXml();
140	}
141
142	switchScreens();
143	}
144
145
146	void MainView::readLocalFiles()
147	{
148	QDir dir(path);
149	if (! dir.exists()) {
150	QMessageBox::warning(this,"infoscreen","Local Source directory not found: " + path);
151	exit(1);
152	}
153	QFileInfoList files = dir.entryInfoList(QDir::Files, QDir::Name); //only files, sort by name
154
155	for (int i=0; i<files.size(); ++i) {
156	QFileInfo file = files[i];
157	qDebug() << "Found" << file.fileName();
158
159	ScreenItem item;
160	item.url = file.filePath();
161	item.module = ModuleUnknown;
162
163	QString ext = file.suffix().toLower();
164	if (ext == "avi") {
165	item.module = ModuleVideo;
166	item.runtime = 1;
167	}
168
169	if (ext == "jpg" \|\| ext == "jpeg") {
170	item.module = ModuleImage;
171	item.runtime = 10;
172	}
173
174	if (item.module != ModuleUnknown) { //no need to enqueue unknown modules
175	screenItems.push_back( item );
176	}
177
178	}
179
180	qDebug() << "Found " << screenItems.size() << " playable items";
181	}
182
183
184	bool MainView::readXml()
185	{
186	const int TIMEOUT = 30601000; // 30 minutter
187	if ( lastXml.isNull() \|\| lastXml.elapsed() > TIMEOUT) {
188
189
190	bool res = xmlHandler.readXml( xmlUrl );
191
192	lastXml = QTime::currentTime();
193
194	screenItems = xmlHandler.getScreenSet();
195
196	if ( currentItemIdx >= screenItems.size() )
197	currentItemIdx = screenItems.size()-1; //avoid overflow
198
199
200	return true;
201	} else {
202	return false;
203	}
204	}
205
206	void MainView::switchScreens()
207	{
208	if (video->isVisible() && video->isPlaying() ) {
209	return; //wait until current clip has finished
210	}
211
212	if (lastScreenSwitch.isNull() \|\| lastScreenSwitch.elapsed() > (currentItem.runtime*1000)) {
213
214	QTime now = QTime::currentTime();
215	if (lastScreenSwitch.isNull())
216	currentItemIdx = -1;
217
218	bool found = false;
219	int tries = 0;
220
221	if (screenItems.size() > 0) { //only try if we have a any screens
222	while (found == false && tries <= screenItems.size()) { //find next with valid display time
223	tries++;
224	currentItemIdx = (currentItemIdx+1) % screenItems.size();
225	currentItem = screenItems.at(currentItemIdx);
226
227	if (currentItem.start.isValid() && currentItem.stop.isValid()) {
228	if (currentItem.start <= now && now <= currentItem.stop )
229	found = true;
230	} else { // if start or stop time was invalid - show them always
231	found = true;
232	}
233	}
234	}
235
236	if (found) {
237
238	if (currentItem.module == ModuleImage) {
239	ensureVisible(picture);
240
241	picture->loadFromUrl( currentItem.url );
242
243	} else if (currentItem.module == ModuleWeb) {
244	ensureVisible(web);
245	web->load(currentItem.url);
246	} else if (currentItem.module == ModuleVideo) {
247	ensureVisible(video);
248	video->loadUrl(currentItem.url);
249	} else {
250	// ModuleUnknown - what should we do??
251	}
252
253	} else {
254	qDebug() << "no screen";
255	errorInfoScreen("Der er ingen information at vise");
256	}
257	lastScreenSwitch = QTime::currentTime();
258
259	}
260	}
261
262	void MainView::errorInfoScreen(QString msg)
263	{
264	ensureVisible(web);
265	web->setHtml("<html>\
266	<body text='#505050' bgcolor='#000000'>\
267	<table width='100%' height='100%'><tr><td align='center' valign='middel'><h1>" + msg+ "</h1></td></tr></table>\
268	</body></html>");
269	}
270
271	void MainView::ensureVisible(QWidget* widget)
272	{
273	if (! widget->isVisible()) {
274	hideAll();
275	widget->setVisible(true);
276	}
277	}
278
279	void MainView::hideAll()
280	{
281	render->setVisible( false );
282	web->setVisible( false);
283	picture->setVisible( false );
284	video->setVisible(false);
285	}