// adjust the font to fit within a width
func (f *FW) fitwidth(width, adj int, s string) {
f.tw = openvg.TextWidth(s, f.font, f.fontsize)
for f.tw > float64(width) {
f.fontsize -= adj
f.tw = openvg.TextWidth(s, f.font, f.fontsize)
}
}
// textwrap draws text at location, wrapping at the specified width
func textwrap(x, y, w float64, s string, font string, size int, leading, factor float64, color string) {
openvg.FillColor(color)
wordspacing := openvg.TextWidth("M", font, size)
words := strings.Split(s, " ")
xp := x
yp := y
edge := x + w
for i := 0; i < len(words); i++ {
tw := openvg.TextWidth(words[i], font, size)
openvg.Text(xp, yp, words[i], font, size)
xp += tw + (wordspacing * factor)
if xp > edge {
xp = x
yp -= leading
}
}
}
// weather retrieves data from the forecast.io API, decodes and displays it.
func (d *display) weather(latlong string) {
wdim := dimen{x: 0, y: d.height / 2, width: d.width / 2, height: d.height / 2}
r, err := netread(fmt.Sprintf(weatherfmt, weatherAPIkey, latlong))
if err != nil {
fmt.Fprintf(os.Stderr, "Weather read error: %v\n", err)
wdim.gerror(d.bgcolor, d.textcolor, "no weather")
return
}
defer r.Close()
var data Forecast
err = json.NewDecoder(r).Decode(&data)
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
wdim.gerror(d.bgcolor, d.textcolor, "no weather")
return
}
x := d.width * 0.05
y := d.height * 0.70
wsize := d.width / 20
spacing := wsize * 2.0
w1 := int(wsize)
w2 := w1 / 2
w3 := w1 / 4
c := data.Currently
temp := fmt.Sprintf("%0.f°", c.Temperature)
tw := openvg.TextWidth(temp, "sans", w1)
wdim.regionFill(d.bgcolor, d.textcolor)
openvg.Text(x, y, temp, "sans", w1)
if c.Temperature-c.FeelsLike > 1 {
openvg.Text(x, y-(spacing/3),
fmt.Sprintf("(feels like %0.f°)", c.FeelsLike), "sans", w3)
}
openvg.Text(x, y+spacing, c.Summary, "sans", w2)
if c.PrecipProb > 0 {
openvg.Text(x, y-(spacing*.6),
fmt.Sprintf("%0.f%% Chance of precipitation", c.PrecipProb*100), "sans", w3)
}
ic := dimen{
x: x + tw + d.width*0.01,
y: d.height * 0.67,
width: d.width / 10,
height: d.width / 10,
}
switch c.Icon {
case "clear-day":
ic.sun("orange")
case "clear-night":
ic.moon(d.bgcolor, d.textcolor)
case "rain":
ic.rain("skyblue")
case "snow":
ic.snow(d.textcolor)
case "wind":
ic.wind(d.bgcolor, d.textcolor)
case "fog":
ic.fog(d.textcolor)
case "cloudy":
ic.cloud(d.textcolor)
case "partly-cloudy-day":
ic.pcloud(d.textcolor)
case "partly-cloudy-night":
ic.npcloud("darkgray", d.textcolor)
}
openvg.End()
}