Run the runText outside of sample folder not working

[AlirezaAlgo]

First of all , thank you for great work .

When i'm running the runtext.py everything work , but when write this code , i get error say i need pass the canvas , it is same code but outside the sample folder

from .core import RGBMatrix, FrameCanvas
import graphics
import time

def RunText():
    matrix = RGBMatrix(32, 6, 1)
    matrix.pwmBits = 11
    matrix.brightness = 100

    offscreenCanvas = matrix.CreateFrameCanvas()

    font = graphics.Font()

    font.LoadFont("../matrix/fonts/7x13.bdf")

    textColor = graphics.Color(255, 255, 0)

    pos = offscreenCanvas.width
    myText = "Hello World!"

    while True:
        offscreenCanvas.Clear()
        len = graphics.DrawText(offscreenCanvas, font, pos, 10, textColor, myText)
        pos -= 1
        if (pos + len < 0):
            pos = offscreenCanvas.width
        time.sleep(0.05)
        offscreenCanvas = matrix.SwapOnVSync(offscreenCanvas)

i get this error :

Argument 'c' has incorrect type (expected rgbmatrix.core.Canvas, got rgbmatrix.core.FrameCanvas)

[hzeller]

Paging @Saij as I don't know how the Python bridge works.

[Saij]

Well normaly FrameCanvas should inherit Canvas. Have to take a look into it.

[hzeller]

Could it be something like shared object files not properly resolved ?

[AlirezaAlgo]

other example of problem ,

When go to sample folder and do this :

python runtext.py

It work , but when you go to parent folder

cd ..
python sample/runtext.py 

won't work , same problem as my code

[AlirezaAlgo]

only runtext not working other code that are using only the core , they work

[hzeller]

Did you check if the font is properly loaded ? Maybe the Python impl changes the working directory, so maybe an absolute path to the font might be something to try.

(but sounds unlikey, as the error indicates something with the frame canvas)

[AlirezaAlgo]

@hzeller problem of not working from upper folder fixed with font path , thank you