projects/infoscreen/MainView.cpp

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

#include <QTimer>
#include <QKeyEvent>

#include "MyWebView.h"
#include "clientsiderender.h"
#include "pictureview.h"
#include "videoview.h"

#include "httpwrapper.h"


MainView::MainView(QWidget* parent)
    : QWidget(parent)
{
    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);


    QTimer* timer = new QTimer(this);
    connect(timer, SIGNAL(timeout() ), this, SLOT(onTimer() ));
    timer->start(100);

}

void MainView::keyPressEvent ( QKeyEvent* event )
{
    int key = event->key();
    if (key == ' ' || key == Qt::Key_Return || key == Qt::Key_Enter) {
        qApp->quit();
    }
}  

void MainView::onTimer()
{
    screenManager.timerTick();

    readXml();

    switchScreens();
}


bool MainView::readXml()
{
    const int TIMEOUT = 30*60*1000; // 30 minutter
    if ( lastXml.isNull() || lastXml.elapsed() > TIMEOUT) {

        xmlHandler.readXml( "http://infoscreen.sundhedhorsens.dk/infoscreen/screen_xml.php?screen_id=1" );

        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 (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 <= now && now <= currentItem.stop )
                    found = true;
            }
        }

        if (found) {

            if (currentItem.module == "info_image") {
                ensureVisible(picture);

                picture->loadFromUrl( currentItem.url );

            }


        } else {
            qDebug() << "no screen";
            hideAll();
        }
        lastScreenSwitch = QTime::currentTime();

    }
}

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
10	#include "MyWebView.h"
11	#include "clientsiderender.h"
12	#include "pictureview.h"
13	#include "videoview.h"
14
15	#include "httpwrapper.h"
16
17
18	MainView::MainView(QWidget* parent)
19	: QWidget(parent)
20	{
21	this->resize(400,400);
22	this->setWindowState( Qt::WindowFullScreen );
23	this->grabKeyboard();
24
25	qApp->setOverrideCursor( QCursor( Qt::BlankCursor) );
26
27	render = new ClientSideRender(this);
28	render->setVisible( false );
29
30	web = new MyWebView(this);
31	web->setVisible( false);
32
33	picture = new PictureView(this);
34	picture->setVisible( false );
35
36	video = new VideoView(this);
37	video->setVisible(false);
38
39	QVBoxLayout* layout = new QVBoxLayout();
40	layout->addWidget(web,1);
41	layout->addWidget(render,1);
42	layout->addWidget(picture,1);
43	layout->addWidget(video,1);
44	layout->addStretch();
45	layout->setContentsMargins(0,0,0,0);
46	setLayout(layout);
47
48
49
50	QTimer* timer = new QTimer(this);
51	connect(timer, SIGNAL(timeout() ), this, SLOT(onTimer() ));
52	timer->start(100);
53
54	}
55
56	void MainView::keyPressEvent ( QKeyEvent* event )
57	{
58	int key = event->key();
59	if (key == ' ' \|\| key == Qt::Key_Return \|\| key == Qt::Key_Enter) {
60	qApp->quit();
61	}
62	}
63
64	void MainView::onTimer()
65	{
66	screenManager.timerTick();
67
68	readXml();
69
70	switchScreens();
71	}
72
73
74	bool MainView::readXml()
75	{
76	const int TIMEOUT = 30601000; // 30 minutter
77	if ( lastXml.isNull() \|\| lastXml.elapsed() > TIMEOUT) {
78
79	xmlHandler.readXml( "http://infoscreen.sundhedhorsens.dk/infoscreen/screen_xml.php?screen_id=1" );
80
81	lastXml = QTime::currentTime();
82
83	screenItems = xmlHandler.getScreenSet();
84
85	if ( currentItemIdx >= screenItems.size() )
86	currentItemIdx = screenItems.size()-1; //avoid overflow
87
88
89	return true;
90	} else {
91	return false;
92	}
93	}
94
95	void MainView::switchScreens()
96	{
97
98	if (lastScreenSwitch.isNull() \|\| lastScreenSwitch.elapsed() > (currentItem.runtime*1000)) {
99
100	QTime now = QTime::currentTime();
101	if (lastScreenSwitch.isNull())
102	currentItemIdx = -1;
103
104	bool found = false;
105	int tries = 0;
106
107	if (screenItems.size() > 0) { //only try if we have a any screens
108	while (found == false && tries <= screenItems.size()) { //find next with valid display time
109	tries++;
110	currentItemIdx = (currentItemIdx+1) % screenItems.size();
111	currentItem = screenItems.at(currentItemIdx);
112
113	if (currentItem.start <= now && now <= currentItem.stop )
114	found = true;
115	}
116	}
117
118	if (found) {
119
120	if (currentItem.module == "info_image") {
121	ensureVisible(picture);
122
123	picture->loadFromUrl( currentItem.url );
124
125	}
126
127
128	} else {
129	qDebug() << "no screen";
130	hideAll();
131	}
132	lastScreenSwitch = QTime::currentTime();
133
134	}
135	}
136
137	void MainView::ensureVisible(QWidget* widget)
138	{
139	if (! widget->isVisible()) {
140	hideAll();
141	widget->setVisible(true);
142	}
143	}
144
145	void MainView::hideAll()
146	{
147	render->setVisible( false );
148	web->setVisible( false);
149	picture->setVisible( false );
150	video->setVisible(false);
151	}