//When focus moves away from the ticker window or it
//closes, it must first be undocked so that reserved screen space
//is freed for use by other programs
public void Refresh()
//This function calls when the ticker needs to be refreshed
{
canv.Children.Clear();
//The canvas is cleared of any TickerItemElements
List <string> sources = (DataRoutines.sourceRead()).ToList();
List <newsItem> news = RSS_Scraper.RSS_Scrape(sources);
ticker.items.Clear();
foreach (newsItem item in news)
{
ticker.items.Add(new TickerItemElement(item));
}
//The tickers list of items is cleared, and then filled
//with a new set of news
ticker.refreshInterval = Properties.Settings.Default.refreshTime;
ticker.animTimer.Interval = new TimeSpan(0, 0, 1);
string tickerSpeedStr = Properties.Settings.Default.tickerSpeed;
int defaultSpeed = 60;
switch (tickerSpeedStr)
{
case "50%":
defaultSpeed = 2 * (defaultSpeed);
ticker.animDuration = new TimeSpan(0, 0, defaultSpeed);
break;
case "75%":
defaultSpeed = Convert.ToInt32((1.5 * (Convert.ToDouble(defaultSpeed))));
ticker.animDuration = new TimeSpan(0, 0, defaultSpeed);
break;
case "100%":
ticker.animDuration = new TimeSpan(0, 0, defaultSpeed);
break;
case "150%":
defaultSpeed = Convert.ToInt32((0.75 * (Convert.ToDouble(defaultSpeed))));
ticker.animDuration = new TimeSpan(0, 0, defaultSpeed);
break;
case "200%":
defaultSpeed = Convert.ToInt32((0.5 * (Convert.ToDouble(defaultSpeed))));
ticker.animDuration = new TimeSpan(0, 0, defaultSpeed);
break;
}
ticker.Start();
//The ticker is then reset and started. WHile inefficient, this does function
//as intended
}
//Upon construction, the sourceRead function is called, which
//reads from a text file containing all news sources input
private void addFeed(object sender, RoutedEventArgs e)
{
newSource = this.sourceInp.Text;
bool valid = RSS_Scraper.validateSource(newSource);
if (valid == true)
{
sources.Add(newSource);
sourceInp.Text = sourceInpText;
sourceInp.Foreground = Brushes.Gray;
}
else if (valid == false)
{
MessageBox.Show(this, "The data you entered is not a valid RSS source, please try again.",
"Invalid Input", MessageBoxButton.OK);
sourceInp.Text = sourceInpText;
sourceInp.Foreground = Brushes.Gray;
}
}
//The function initTicker is called when loading is complete,
//to initialise the key aspects of the window
public void initTicker()
{
List <string> sources = (DataRoutines.sourceRead()).ToList();
//The list of input newsSources is read using
//DataRoutines.sourceRead
List <newsItem> news = RSS_Scraper.RSS_Scrape(sources);
//This list of input sources is then passed to
//RSS_Scraper.RSS_Scrape, which gathers
//all news from those sources
ticker = new Ticker <TickerItemElement>(canv, this);
//A new ticker is instantiated, with a parent of the
//current tickerWindow instantiating it, and a
//containing window of the canvas element canv
foreach (newsItem item in news)
{
ticker.items.Add(new TickerItemElement(item));
}
//Subsequently, the list of items the ticker has to
//scroll is added to with the gathered news, creating
//tickerItemElements as the process occurs
ticker.refreshInterval = Properties.Settings.Default.refreshTime;
//The refresh interval of the ticker is set to the user set
//property refreshTime
string tickerSpeedStr = Properties.Settings.Default.tickerSpeed;
int defaultSpeed = 60;
//The default speed of the ticker corresponds to a 60 second
//TimeSpan. The string tickerSpeedStr is linked to the tickerSpeed
//user setting, and is used to determine the modifier to this
//value
switch (tickerSpeedStr)
{
//The following switch-case block will choose the
//appropriate modifier to the speed value
case "50%":
defaultSpeed = 2 * (defaultSpeed);
ticker.animDuration = new TimeSpan(0, 0, defaultSpeed);
break;
//The speed being set to 50% slower means that the TimeSpan must
//be doubled
case "75%":
defaultSpeed = Convert.ToInt32((1.5 * (Convert.ToDouble(defaultSpeed))));
ticker.animDuration = new TimeSpan(0, 0, defaultSpeed);
break;
//For 75%, this is halfway between 1.0 and 2.0 times the default value. As
//this is multiplying by a double, the program must convert to the integer
//deafult value to a double and back to an integer for use in the TimeSpan
case "100%":
ticker.animDuration = new TimeSpan(0, 0, defaultSpeed);
break;
//This is the default value, so there are no changes made
case "150%":
defaultSpeed = Convert.ToInt32((0.75 * (Convert.ToDouble(defaultSpeed))));
ticker.animDuration = new TimeSpan(0, 0, defaultSpeed);
break;
//A 150% speed corresponds to a 0.75 times multiplier, making the TimeSpan
//smaller
case "200%":
defaultSpeed = Convert.ToInt32((0.5 * (Convert.ToDouble(defaultSpeed))));
ticker.animDuration = new TimeSpan(0, 0, defaultSpeed);
break;
//A 200% speed halves the TimeSpan to 30 seconds
}
ticker.Start();
dock();
//The ticker is started and the dock function called
}