Font loading

[galaxyZ2]

Hello Everyone!

Please allow me another question I am fighting for quite a bit. I have a flask app, and the webpage prompts the user to choose a font type.

fontname = []
font_dir = '/home/linux/rpi-rgb-led-matrix/rpi-rgb-led-matrix/fonts/'
for root, dirs, files in os.walk(font_dir):
    for file in files:
        if file.endswith(".bdf"):
            fontname.append(file) 

Then the Display form is as follows:

class DisplayForm(FlaskForm):
    message = StringField('Messages')
    color = StringField('Color')
    font = SelectField('Font', choices=[(f, f) for f in fontname])
    submit = SubmitField('Submit')

Until this point everything works as expected, the SelectField is populated with the choices. After this I have my def:

@app.route('/display', methods=['GET','POST'])
def display():
    global color, x, y, message, fontname
    #logging.basicConfig(level=logging.DEBUG, format='%(asctime)s %(message)s', datefmt='%m/%d/%Y %I:%M:%S %p')
    form = DisplayForm()
    if form.validate_on_submit():
        message = form.message.data
        color = form.color.data
        if not message or not color:
            return render_template('display.html', form=form, error_mesage='Please enter the values')
        x = 0
        y = 20
        message = form.message.data
        color_code = form.color.data
        fonttype = form.font.data
        r, g, b = map(int, color_code.split(","))
        color = graphics.Color(r,g,b)
        font_path = os.path.join(font_dir, fonttype)
        font_path = graphics.Font()
        font.LoadFont(font_path)
        canvas.Clear()
        graphics.DrawText(canvas, font, x, y, color, message)
        matrix.SwapOnVSync(canvas)
        #return 'Displaying message: {}'.format(message)
        return render_template('display.html', form=form, fontname=fontname, color=color, x=x, y=y)

There is no exception thrown on the server side, but the text is not drawn, my thinking is that the font is not loaded correctly.

Could you point out my issue here?

[galaxyZ2]

I am not sure if in the graphics.DrawText() font needs to be mentioned or font_path, neither of them have possitive effect on the outcome.

[ledvinap]

font_path = graphics.Font()

[galaxyZ2]

font_path = graphics.Font()

I am now trying to create a font variable as follows then load that, but to no avail. :(

 font_path = os.path.join(font_dir, fonttype)
 font = graphics.Font(font_path)
 font.LoadFont(font)
 graphics.DrawText(canvas, font, x, y, color, message)

[ledvinap]

font_path = os.path.join(font_dir, fonttype) # string with path font = graphics.Font(); # empty Font object font.LoadFont(font_path ) # load font file into font object graphics.DrawText(canvas, font, x, y, color, message)

[galaxyZ2]

Got it working, thank you for your help! I also had bad reference in the html.