Time Update of Canvas Layer List
Another questions about Canvas updates.
I setup the canvas and do a url call to json data. I would like to then call the json every 10 seconds to update the layer text.
This question also applies to updating the associate ScreenSaver info.
Here is the Setup of the canvas
Here is my original call:
Here is the Function to update the Canvas Layer Text
Here is my Event Loop
Any direction for correcting my code is appreciated.
I setup the canvas and do a url call to json data. I would like to then call the json every 10 seconds to update the layer text.
This question also applies to updating the associate ScreenSaver info.
Here is the Setup of the canvas
Function SetupFramedCanvas()
m.canvas.AllowUpdates(true)
m.canvas.Clear()
m.canvas.SetLayer(0, [
{ 'Background:
Url: m.background
CompositionMode: "Source"
},
])
m.paint()
End Function
Here is my original call:
Function PaintFramedCanvas()
jsonRequest = CreateObject("roUrlTransfer")
jsonRequest.SetURL("http://URLTOJSON")
guide = ParseJson(jsonRequest.GetToString())
print "Album art: "+guide.album_art.src
print guide
list = []
mode = CreateObject("roDeviceInfo").GetDisplayMode()
' print "m.streamPlaying: "+m.streamPlaying
print m.progress
if m.progress < 95
list.Push({
Color: "#000000"
TargetRect: { x: 75, y: 475, w: 200, h: 100 }
})
list.Push({
Text: "Loading..." + m.progress.tostr() + "%"
TargetRect: { x: 75, y: 475, w: 200, h: 100 }
})
else 'Audio is currently playing
if m.paused
list.Push({
Color: "#ffffff"
TargetRect: { x: 75, y: 475, w: 200, h: 100 }
CompositionMode: "Source"
})
if mode = "720p"
list.Push({
url: "pkg:/images/pause_icon_small.png"
TargetRect: { x: 75, y: 475, w: 100, h: 50 }
})
else
list.Push({
url: "pkg:/images/pause_icon_small.png"
TargetRect: { x: 75, y: 475, w: 100, h: 50 }
})
end if
else if m.overlay
list.Push({
Color: "#ffffff"
TargetRect: { x: 75, y: 475, w: 200, h: 100 }
CompositionMode: "Source"
})
else 'not paused
list.Push({
Color: "#ffffff"
TargetRect: { x: 75, y: 475, w: 200, h: 100 }
CompositionMode: "Source"
})
end if
if guide.album_art.src = ""
imageUrl = ""
imageRect = ""
else
imageUrl = "http://URLTOSTREAMARTWORK?u="+guide.album_art.src+""
imageRect = { x: 55, y: 256, w: 180, h: 180 }
end if
'****MetaData
if mode = "720p"
list.Push({
url: imageUrl
TargetRect: imageRect
})
list.Push({
Text: "Title: "+guide.title
TargetRect: { x: 350, y: 225, w: 430, h: 90 }
TextAttrs: { font: "small", halign: "left", valign: "center", color: m.textcolor }
})
list.Push({
Text: "Album: "+guide.album
TargetRect: { x: 350, y: 325, w: 430, h: 80 }
TextAttrs: { font: "small", halign: "left", valign: "center", color: m.textcolor }
})
list.Push({
Text: "Artist: "+guide.artist
TargetRect: { x: 350, y: 425, w: 430, h: 80 }
TextAttrs: { font: "small", halign: "left", valign: "center", color: m.textcolor }
})
else
list.Push({
Text: "Nu"
TargetRect: { x: 443, y: 132, w: 50, h: 55 }
TextAttrs: { font: "s", halign: "right", valign: "center", color: m.textcolor }
})
list.Push({
Text: guide.title
TargetRect: { x: 499, y: 132, w: 193, h: 55 }
TextAttrs: { font: "s", halign: "left", valign: "center", color: m.textcolor }
})
list.Push({
Text: guide.artist
TargetRect: { x: 443, y: 193, w: 50, h: 55 }
TextAttrs: { font: "s", halign: "right", valign: "center", color: m.textcolor }
})
list.Push({
Text: guide.album
TargetRect: { x: 499, y: 193, w: 193, h: 55 }
TextAttrs: { font: "s", halign: "left", valign: "center", color: m.textcolor }
})
end if
end if
m.canvas.SetLayer(1, list)
End Function
Here is the Function to update the Canvas Layer Text
Function UpdateCanvas()
print "Updating 60 seconds"
list = []
mode = CreateObject("roDeviceInfo").GetDisplayMode()
jsonRequest = CreateObject("roUrlTransfer")
jsonRequest.SetURL("http://URLTOJSON")
guide = ParseJson(jsonRequest.GetToString())
print "Album art: "+guide.album_art.src
print guide
print "Update Canvas Request"
if guide.album_art.src = ""
imageUrl = ""
imageRect = ""
else
imageUrl = "http://URLTOARTWORK?u="+guide.album_art.src+""
imageRect = { x: 55, y: 256, w: 180, h: 180 }
end if
'****MetaData
if mode = "720p"
list.Push({
url: imageUrl
TargetRect: imageRect
})
list.Push({
Text: "Title: "+guide.title
TargetRect: { x: 350, y: 225, w: 430, h: 90 }
TextAttrs: { font: "small", halign: "left", valign: "center", color: m.textcolor }
})
list.Push({
Text: "Album: "+guide.album
TargetRect: { x: 350, y: 325, w: 430, h: 80 }
TextAttrs: { font: "small", halign: "left", valign: "center", color: m.textcolor }
})
list.Push({
Text: "Artist: "+guide.artist
TargetRect: { x: 350, y: 425, w: 430, h: 80 }
TextAttrs: { font: "small", halign: "left", valign: "center", color: m.textcolor }
})
else
list.Push({
Text: guide.title
TargetRect: { x: 499, y: 132, w: 193, h: 55 }
TextAttrs: { font: "s", halign: "left", valign: "center", color: m.textcolor }
})
list.Push({
Text: guide.artist
TargetRect: { x: 443, y: 193, w: 50, h: 55 }
TextAttrs: { font: "s", halign: "right", valign: "center", color: m.textcolor }
})
list.Push({
Text: guide.album
TargetRect: { x: 499, y: 193, w: 193, h: 55 }
TextAttrs: { font: "s", halign: "left", valign: "center", color: m.textcolor }
})
end if
m.canvas.SetLayer(1, list)
End Function
Here is my Event Loop
Function EventLoop()
timer=createobject("rotimespan")
timer.mark()
while true
msg = wait(0, m.port)
if msg <> invalid
'If this is a startup progress status message, record progress
'and update the UI accordingly:
if msg.isStatusMessage() and msg.GetMessage() = "startup progress"
m.paused = false
progress% = msg.GetIndex() / 10
if m.progress <> progress%
m.progress = progress%
m.paint()
print m.progress
end if
else if timer.totalseconds() > 3
'result=UpdateCanvas()
'print result
UpdateCanvas()
'Playback progress (in seconds):
'If the <UP> key is pressed, jump out of this context:
else if msg.isRemoteKeyPressed()
index = msg.GetIndex()
print "Remote button pressed: " + index.tostr()
if index = 4 '<left>
return -1
else if index = 13 '<PAUSE/PLAY>
if m.paused m.player.Resume() else m.player.Pause()
end if
else if msg.isPaused()
m.paused = true
m.paint()
else if msg.isResumed()
m.paused = false
m.paint()
end if
'Output events for debug
print msg.GetType(); ","; msg.GetIndex(); ": "; msg.GetMessage()
if msg.GetInfo() <> invalid print msg.GetInfo();
end if
end while
End Function
Any direction for correcting my code is appreciated.
