func main() {
var sreenHeight, cx, cy, cw, ch, midy int
message := "Scrolling texts could be useful if the information does not fit on screen"
w, h := openvg.Init()
sreenHeight = h
var speed openvg.VGfloat = 0.5
var x openvg.VGfloat = 0
midy = (h / 2)
fontsize := w / 50
cx = 0
ch = fontsize * 2
cw = w
cy = midy - (ch / 2)
var jsonData SLData
for {
response, err := http.Get("http://localhost:8000")
if err == nil {
defer response.Body.Close()
contents, err := ioutil.ReadAll(response.Body)
if err != nil {
fmt.Printf("Error reading http data, %s", err)
} else {
fmt.Printf("Got: %s\n", string(contents))
if err := json.Unmarshal(contents, &jsonData); err != nil {
panic(err)
}
fmt.Println(jsonData)
}
}
openvg.Start(w, h)
imgw, imgh := 0, 0
openvg.Background(255, 255, 255)
//SLHeight = 60
var imgPosY = openvg.VGfloat(sreenHeight - 70)
openvg.Image(4, imgPosY, imgw, imgh, "SL.jpg")
var TAB1 = openvg.VGfloat(4 * w / 20)
var TAB2 = openvg.VGfloat(8 * w / 20)
rx1, rw1, rh1 := openvg.VGfloat(cx), openvg.VGfloat(cw), openvg.VGfloat(ch)
ty := 0
rix := 0
// Buses
for ty = sreenHeight - (80 + int(rh1)); ty > 0 && rix < len(jsonData.ResponseData.Buses); ty -= ch {
tempy := openvg.VGfloat(ty)
//ry := openvg.VGfloat(ty)
if rix%2 == 0 {
openvg.FillRGB(0, 0, 0, .2)
//openvg.Rect(rx1, tempy, rw1, rh1)
openvg.FillRGB(0, 0, 0, 1)
tempy = tempy + 6.0
} else {
openvg.FillRGB(0, 0, 0, .4)
openvg.Rect(rx1, tempy, rw1, rh1)
tempy = tempy + 6.0
openvg.FillRGB(0, 0, 0, 1)
}
openvg.Text(rx1, tempy, jsonData.ResponseData.Buses[rix].LineNumber, "sans", fontsize)
drawTypeOfTransport(rx1+60, tempy+2, rw1, ch-20, jsonData.ResponseData.Buses[rix].TransportMode)
openvg.Text(rx1+100, tempy, jsonData.ResponseData.Buses[rix].StopPointDesignation, "sans", fontsize)
openvg.Text(rx1+TAB1, tempy, jsonData.ResponseData.Buses[rix].DisplayTime, "sans", fontsize)
var dest = jsonData.ResponseData.Buses[rix].Destination
dest = replaceAO(dest)
openvg.Text(rx1+TAB2, tempy, dest, "sans", fontsize)
//openvg.Translate(x, ry+openvg.VGfloat(fontsize/2))
//openvg.Background(255,255,0)
rix = rix + 1
}
var trainIx = 0
for ty = ty - 20; ty > 0 && trainIx < len(jsonData.ResponseData.Trains); ty -= ch {
tempy := openvg.VGfloat(ty)
//ry := openvg.VGfloat(ty)
if rix%2 == 0 {
openvg.FillRGB(0, 0, 0, .2)
//openvg.Rect(rx1, tempy, rw1, rh1)
openvg.FillRGB(0, 0, 0, 1)
tempy = tempy + 6.0
} else {
openvg.FillRGB(0, 0, 0, .4)
openvg.Rect(rx1, tempy, rw1, rh1)
tempy = tempy + 6.0
openvg.FillRGB(0, 0, 0, 1)
}
openvg.Text(rx1, tempy, jsonData.ResponseData.Trains[trainIx].LineNumber, "sans", fontsize)
drawTypeOfTransport(rx1+55, tempy+4, rw1, ch-20, jsonData.ResponseData.Trains[trainIx].TransportMode)
openvg.Text(rx1+TAB1, tempy, jsonData.ResponseData.Trains[trainIx].DisplayTime, "sans", fontsize)
var dest = jsonData.ResponseData.Trains[trainIx].Destination
dest = replaceAO(dest)
openvg.Text(rx1+TAB2, tempy, dest, "sans", fontsize)
//openvg.Translate(x, ry+openvg.VGfloat(fontsize/2))
//openvg.Background(255,255,0)
trainIx = trainIx + 1
rix = rix + 1
}
//openvg.End()
openvg.SaveEnd("dump.raw")
time.Sleep(60 * time.Second)
}
bufio.NewReader(os.Stdin).ReadBytes('\n')
rx, ry, rw, rh := openvg.VGfloat(cx), openvg.VGfloat(cy), openvg.VGfloat(cw), openvg.VGfloat(ch)
// scroll the text, only in the clipping rectangle
for x = 0; x < rw+speed; x += speed {
openvg.Start(w, h)
openvg.Background(255, 255, 255)
openvg.FillRGB(0, 0, 0, .2)
openvg.Rect(rx, ry, rw, rh)
openvg.ClipRect(cx, cy, cw, ch)
openvg.Translate(x, ry+openvg.VGfloat(fontsize/2))
openvg.FillRGB(0, 0, 0, 1)
openvg.Text(0, 0, message, "sans", fontsize)
openvg.ClipEnd()
openvg.End()
}
bufio.NewReader(os.Stdin).ReadBytes('\n')
openvg.Finish()
os.Exit(0)
}
// interact controls the display of the deck
func interact(filename, searchterm string, w, h, slidenum int, gp float64) {
openvg.SaveTerm()
defer openvg.RestoreTerm()
var d deck.Deck
var err error
d, err = deck.Read(filename, w, h)
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
return
}
openvg.RawTerm()
r := bufio.NewReader(os.Stdin)
lastslide := len(d.Slide) - 1
if slidenum > lastslide {
slidenum = lastslide
}
if slidenum < 0 {
slidenum = 0
}
if len(searchterm) > 0 {
sr := deck.Search(d, searchterm)
if sr >= 0 {
slidenum = sr
}
}
n := slidenum
xray := 1
initial := 0
imap := make(map[string]image.Image)
// respond to keyboard commands, 'q' to exit
for cmd := byte('0'); cmd != 'q'; cmd = readcmd(r) {
switch cmd {
// read/reload
case 'r', 18: // r, Ctrl-R
d, err = deck.Read(filename, w, h)
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
return
}
loadimage(d, imap)
openvg.Background(0, 0, 0)
xray = 1
showslide(d, imap, n)
// save slide
case 's', 19: // s, Ctrl-S
openvg.SaveEnd(fmt.Sprintf("%s-slide-%04d", filename, n))
// first slide
case '0', '1', 1, '^': // 0,1,Ctrl-A,^
initial++
if initial == 1 {
loadimage(d, imap)
n = slidenum
} else {
n = 0
}
showslide(d, imap, n)
// last slide
case '*', 5, '$': // *, Crtl-E, $
n = lastslide
showslide(d, imap, n)
// next slide
case '+', 'n', '\n', ' ', '\t', '=', 14: // +,n,newline,space,tab,equal,Crtl-N
n++
if n > lastslide {
n = 0
}
showslide(d, imap, n)
// previous slide
case '-', 'p', 8, 16, 127: // -,p,Backspace,Ctrl-P,Del
n--
if n < 0 {
n = lastslide
}
showslide(d, imap, n)
// x-ray
case 'x', 24: // x, Ctrl-X
xray++
showslide(d, imap, n)
if xray%2 == 0 {
showgrid(d, n, gp)
}
// Escape sequence from remotes
case 27:
remote, rerr := r.ReadString('~')
if len(remote) > 2 && rerr == nil {
switch remote[1] {
case '3': // blank screen
openvg.Start(d.Canvas.Width, d.Canvas.Height)
openvg.FillColor("black")
openvg.Rect(0, 0, openvg.VGfloat(d.Canvas.Width), openvg.VGfloat(d.Canvas.Height))
openvg.End()
case '5': // back
n--
if n < 0 {
n = lastslide
}
showslide(d, imap, n)
case '6': // forward
n++
if n > lastslide {
n = 0
}
showslide(d, imap, n)
}
}
// search
case '/', 6: // slash, Ctrl-F
openvg.RestoreTerm()
searchterm, serr := r.ReadString('\n')
openvg.RawTerm()
if serr != nil {
continue
}
if len(searchterm) > 2 {
ns := deck.Search(d, searchterm[0:len(searchterm)-1])
if ns >= 0 {
showslide(d, imap, ns)
n = ns
}
}
}
}
}