/// <summary>
/// Paints the forecast temperatures as a chart.
/// </summary>
/// <param name="cr">
/// A <see cref="Cairo.Context"/> to do the painting.
/// </param>
void DrawTempGraph(Cairo.Context cr)
{
int max = -1000, min = 1000;
for (int day = 0; day < WeatherController.Weather.ForecastDays; day++)
{
if (WeatherController.Weather.Forecasts [day].high > max)
{
max = WeatherController.Weather.Forecasts [day].high;
}
if (WeatherController.Weather.Forecasts [day].low > max)
{
max = WeatherController.Weather.Forecasts [day].low;
}
if (WeatherController.Weather.Forecasts [day].high < min)
{
min = WeatherController.Weather.Forecasts [day].high;
}
if (WeatherController.Weather.Forecasts [day].low < min)
{
min = WeatherController.Weather.Forecasts [day].low;
}
}
if (max <= min)
{
return;
}
using (Pango.Layout layout = DockServices.Drawing.ThemedPangoLayout()) {
Pango.Rectangle inkRect, logicalRect;
layout.FontDescription = new Gtk.Style().FontDescription;
layout.FontDescription.Weight = Pango.Weight.Bold;
layout.Ellipsize = Pango.EllipsizeMode.None;
layout.FontDescription.AbsoluteSize = Pango.Units.FromPixels((int)(Allocation.Height / 5));
// high/low temp
layout.Width = Pango.Units.FromPixels(Allocation.Height);
cr.Color = colorHigh;
layout.SetText(string.Format("{0}{1}", max, AbstractWeatherSource.TempUnit));
layout.GetPixelExtents(out inkRect, out logicalRect);
cr.MoveTo(Allocation.Width - Allocation.Height + (Allocation.Height - inkRect.Width) / 2 - BUTTON_SIZE, Allocation.Height / 6 - logicalRect.Height / 2);
Pango.CairoHelper.LayoutPath(cr, layout);
cr.Fill();
cr.Color = colorLow;
layout.SetText(string.Format("{0}{1}", min, AbstractWeatherSource.TempUnit));
layout.GetPixelExtents(out inkRect, out logicalRect);
cr.MoveTo(Allocation.Width - Allocation.Height + (Allocation.Height - inkRect.Width) / 2 - BUTTON_SIZE, Allocation.Height * 6 / 9 - logicalRect.Height / 2);
Pango.CairoHelper.LayoutPath(cr, layout);
cr.Fill();
// day names
layout.Width = Pango.Units.FromPixels(2 * Allocation.Height);
cr.Color = colorTitle;
for (int day = 0; day < WeatherController.Weather.ForecastDays; day++)
{
layout.SetText(WeatherForecast.DayShortName(WeatherController.Weather.Forecasts [day].dow));
layout.GetPixelExtents(out inkRect, out logicalRect);
cr.MoveTo(BUTTON_SIZE + day * Allocation.Height * 2 + (Allocation.Height - inkRect.Width) / 2, Allocation.Height * 8 / 9 - logicalRect.Height / 2);
Pango.CairoHelper.LayoutPath(cr, layout);
}
cr.Fill();
cr.Save();
layout.FontDescription.Dispose();
layout.Context.Dispose();
}
// draw tick lines
cr.Color = new Cairo.Color(0.627, 0.627, 0.627, .8);
cr.LineWidth = 1;
cr.LineCap = LineCap.Round;
int lines = 5;
for (int line = 0; line < lines - 1; line++)
{
cr.MoveTo(BUTTON_SIZE + Allocation.Height / 4, 4.5 + Allocation.Height * line / lines);
cr.LineTo(BUTTON_SIZE + (2 * WeatherController.Weather.ForecastDays - 1) * Allocation.Height - Allocation.Height / 4, 4.5 + Allocation.Height * line / lines);
cr.Stroke();
}
for (int line = 0; ; line++)
{
double x = BUTTON_SIZE + Allocation.Height / 2 + line * 2 * Allocation.Height - 0.5;
if (x >= BUTTON_SIZE + (2 * WeatherController.Weather.ForecastDays - 1) * Allocation.Height - Allocation.Height / 4)
{
break;
}
cr.MoveTo(x, 4.5);
cr.LineTo(x, 4.5 + Allocation.Height * (lines - 2) / lines);
cr.Stroke();
}
cr.Restore();
cr.LineWidth = 3;
double height = ((double)Allocation.Height * 2 / 3 - 5) / (max - min);
// high temp graph
cr.Color = colorHigh;
cr.MoveTo(BUTTON_SIZE + Allocation.Height / 2, 5 + height * (max - WeatherController.Weather.Forecasts [0].high));
for (int day = 1; day < WeatherController.Weather.ForecastDays; day++)
{
cr.LineTo(BUTTON_SIZE + day * Allocation.Height * 2 + Allocation.Height / 2, 5 + height * (max - WeatherController.Weather.Forecasts [day].high));
}
cr.Stroke();
// low temp graph
cr.Color = colorLow;
cr.MoveTo(BUTTON_SIZE + Allocation.Height / 2, 5 + height * (max - WeatherController.Weather.Forecasts [0].low));
for (int day = 1; day < WeatherController.Weather.ForecastDays; day++)
{
cr.LineTo(BUTTON_SIZE + day * Allocation.Height * 2 + Allocation.Height / 2, 5 + height * (max - WeatherController.Weather.Forecasts [day].low));
}
cr.Stroke();
// high temp points
for (int day = 0; day < WeatherController.Weather.ForecastDays; day++)
{
DrawDataPoint(cr, Allocation.Height, height, max, day, WeatherController.Weather.Forecasts [day].high);
}
// low temp points
for (int day = 0; day < WeatherController.Weather.ForecastDays; day++)
{
DrawDataPoint(cr, Allocation.Height, height, max, day, WeatherController.Weather.Forecasts [day].low);
}
}
protected override MenuList OnGetMenuItems()
{
MenuList list = base.OnGetMenuItems();
if (WeatherController.Weather.Condition != null)
{
list[MenuListContainer.Header].Add(new MenuItem(Catalog.GetString("Radar _Map"),
WeatherController.Weather.Image, (o, a) => WeatherController.Weather.ShowRadar()));
}
list.SetContainerTitle(MenuListContainer.Actions, Mono.Unix.Catalog.GetString("Forecasts"));
for (int i = 0; i < WeatherController.Weather.ForecastDays; i++)
{
if (WeatherController.Weather.Forecasts [i].dow != null)
{
list[MenuListContainer.Actions].Add(new ForecastMenuItem(i,
string.Format("{0}", WeatherForecast.DayName(WeatherController.Weather.Forecasts [i].dow)), WeatherController.Weather.Forecasts [i].image));
}
}
list[MenuListContainer.CustomOne].Add(new MenuItem(Catalog.GetString("_Settings"), Gtk.Stock.Preferences,
delegate {
if (Config == null)
{
Config = new WeatherConfigDialog();
}
Config.Show();
}));
if (WeatherController.CurrentLocation != "")
{
list[MenuListContainer.CustomOne].Add(new MenuItem(Catalog.GetString("Check _Weather"), Gtk.Stock.Refresh,
delegate {
Status = WeatherDockletStatus.ManualReload;
State |= ItemState.Wait;
QueueRedraw();
WeatherController.ResetTimer();
}));
}
return(list);
}
/// <summary>
/// Paints an overview of the forecast including high/low temps and a condition icon.
/// </summary>
/// <param name="cr">
/// A <see cref="Cairo.Context"/> to do the painting.
/// </param>
void DrawVertForecast(Cairo.Context cr)
{
int cellHeight = (int)((Allocation.Height - BUTTON_SIZE) / WeatherController.Weather.ForecastDays / 1.5);
double xOffset = 0;
double yOffset = cellHeight / 4.0;
using (Pango.Layout layout = DockServices.Drawing.ThemedPangoLayout()) {
Pango.Rectangle inkRect, logicalRect;
layout.FontDescription = new Gtk.Style().FontDescription;
layout.FontDescription.Weight = Pango.Weight.Bold;
layout.Ellipsize = Pango.EllipsizeMode.None;
layout.Width = Pango.Units.FromPixels(cellHeight);
for (int day = 0; day < WeatherController.Weather.ForecastDays; day++)
{
layout.FontDescription.AbsoluteSize = Pango.Units.FromPixels((int)(cellHeight / 5));
cr.Color = colorTitle;
layout.SetText(string.Format("{0}", WeatherForecast.DayShortName(WeatherController.Weather.Forecasts [day].dow)));
layout.GetPixelExtents(out inkRect, out logicalRect);
cr.MoveTo(xOffset + (cellHeight - inkRect.Width) / 2, yOffset);
Pango.CairoHelper.LayoutPath(cr, layout);
cr.Fill();
cr.Color = colorHigh;
layout.SetText(string.Format("{0}{1}", WeatherController.Weather.Forecasts [day].high, AbstractWeatherSource.TempUnit));
layout.GetPixelExtents(out inkRect, out logicalRect);
cr.MoveTo(xOffset + (cellHeight - inkRect.Width) / 2, yOffset + (cellHeight - logicalRect.Height) / 2);
Pango.CairoHelper.LayoutPath(cr, layout);
cr.Fill();
cr.Color = colorLow;
layout.SetText(string.Format("{0}{1}", WeatherController.Weather.Forecasts [day].low, AbstractWeatherSource.TempUnit));
layout.GetPixelExtents(out inkRect, out logicalRect);
cr.MoveTo(xOffset + (cellHeight - inkRect.Width) / 2, yOffset + cellHeight - logicalRect.Height);
Pango.CairoHelper.LayoutPath(cr, layout);
cr.Fill();
using (Gdk.Pixbuf pbuf = DockServices.Drawing.LoadIcon(WeatherController.Weather.Forecasts [day].image, cellHeight - 5)) {
Gdk.CairoHelper.SetSourcePixbuf(cr, pbuf, xOffset + 5 + cellHeight, yOffset + 2);
cr.PaintWithAlpha(WeatherController.Weather.Forecasts [day].chanceOf ? .6 : 1);
}
if (WeatherController.Weather.Forecasts [day].chanceOf)
{
layout.FontDescription.AbsoluteSize = Pango.Units.FromPixels((int)(cellHeight / 2));
layout.SetText("?");
layout.GetPixelExtents(out inkRect, out logicalRect);
cr.MoveTo(xOffset + cellHeight + (cellHeight - inkRect.Width) / 2, yOffset + (cellHeight - logicalRect.Height) / 2);
cr.LineWidth = 4;
cr.Color = new Cairo.Color(0, 0, 0, 0.3);
Pango.CairoHelper.LayoutPath(cr, layout);
cr.StrokePreserve();
cr.Color = new Cairo.Color(1, 1, 1, .6);
cr.Fill();
}
yOffset += (int)(1.5 * cellHeight);
}
layout.FontDescription.Dispose();
layout.Context.Dispose();
}
}
/// <summary>
/// Creates a new weather source object.
/// </summary>
protected AbstractWeatherSource ()
{
Image = DefaultImage;
Forecasts = new WeatherForecast [ForecastDays];
for (int i = 0; i < ForecastDays; i++)
Forecasts [i].image = DefaultImage;
GLib.Timeout.Add (MAXXMLCACHEAGE, () => {
xml_cache.RemoveAll (data => ((DateTime.Now - data.Time).TotalMilliseconds > MAXXMLCACHEAGE));
return true;
});
}
