Problem with M5TextBox

[noiseislife]

I'm having an odd problem displaying text. Certain coordinates do not display certain characters, etc.

See the code below. The D does not display in label1. This came up initially when I was trying to position text to be correctly centered at 90 degree rotation.

from m5stack import *
from m5ui import *
from uiflow import *

@timerSch.event('timer1')
def ttimer1():
global curLetter

if curLetter == "A":
curLetter = "B"
else:
if curLetter == "B":
curLetter = "C"
else:
if curLetter == "C":
curLetter = "D"
else:
if curLetter == "D":
curLetter = "A"
label0.setText(curLetter)
label1.setText(curLetter)
pass

setScreenColor(0x000000)
curLetter = "A"
label0 = M5TextBox(25, 20, curLetter, lcd.FONT_DejaVu72,0xFFFFFF, rotate=0)
label1 = M5TextBox(29, 80, curLetter, lcd.FONT_DejaVu72,0xFFFFFF, rotate=0)
timerSch.run('timer1', 500, 0x00)

[m5stack]

I tested it and when it runs, the two texts can go from A-> B-> C-> D, and it looks like there is no problem.

[noiseislife]

Here's a video of my output.

https://www.youtube.com/watch?v=nYwlS4ADqOg&feature=youtu.be

I tried firmware versions 1.4.4, 1.4.5, and 1.4.5.1 thinking maybe that's related but they all behaved the same.

I'm not really sure what else I can do to troubleshoot this since it seems unique to my device.

[M5StickFreakler]

Hi @noiseislife

The "problem" in your example is, that the letter D is to wide to display completely on the display.
Unfortunately letters are suppressed if they have not enough space on screen.

This Example works :-)

from m5stack import *
from m5ui import *
from uiflow import *

@timerSch.event('timer1')

def ttimer1():
  
  global curLetter

  if curLetter == "A":
    curLetter = "B"
  else:
    if curLetter == "B":
      curLetter = "C"
    else:
      if curLetter == "C":
        curLetter = "D"
      else:
        if curLetter == "D":
          curLetter = "A"
          
  label0.setText(curLetter)
  label1.setText(curLetter)
  pass

setScreenColor(0x000000)
curLetter = "A"
label0 = M5TextBox(25, 20, curLetter, lcd.FONT_DejaVu72,0xFFFFFF, rotate=0)
label1 = M5TextBox(25, 80, curLetter, lcd.FONT_DejaVu72,0xFFFFFF, rotate=0)

timerSch.run('timer1', 500, 0x00)

Best regards
Thomas

[noiseislife]

What I was really trying to do was to center letters rotated 90 degrees, but even with that rotation the D disappears. You can change the angle in my code example to see this.

[m5stack]

@noiseislife Because the rotation causes the coordinates to shift out of the screen, it cannot be total displayed. You only need to adjust the coordinates to display it completely.

[noiseislife]

I know what you're saying seems logical, but it is simply not the case.

from m5stack import *
from m5ui import *
from uiflow import *

setScreenColor(0x111111)
label0 = M5TextBox(16, 38, "A", lcd.FONT_DejaVu72,0xFFFFFF, rotate=0)
angle = None
x = None
angle = 0
for count in range(90):
  label0.setRotate(angle)
  angle = (angle if isinstance(angle, int) else 0) + 1
x = 16
for count2 in range(25):
  label0.setPosition(x=x)
  x = (x if isinstance(x, int) else 0) + 1

And the video:
https://youtu.be/qsKmaJEeI6A

[M5StickFreakler]

@noiseislife

With a little "wait_ms()" its more clear what you mean :-)

from m5stack import *
from m5ui import *
from uiflow import *

setScreenColor(0x111111)
label1 = M5TextBox(05, 05, "a", lcd.FONT_Default,0xFFFFFF, rotate=0)
label2 = M5TextBox(05, 20, "x", lcd.FONT_Default,0xFFFFFF, rotate=0)
label0 = M5TextBox(16, 50, "A", lcd.FONT_DejaVu72,0xFFFFFF, rotate=0)

for angle in range(91):
  label0.setRotate(angle)
  label1.setText('angle:' + str(angle))
  wait_ms(50)

for posX in range(16, 256):
  label0.setPosition(x=posX)
  label2.setText('pos-x:' + str(posX))
  wait_ms(100)

I am sure it is ones more a bug :-)
You can check this, if you let the angle zero. You can see that the char disappears at pos-x = 33. And the same behavior occurs, if you have rotated the char. It is obviously one more of the uncountable bugs.

@M5Stack: Why does the M5Stack not draw a char if a small part is outside of the screen? We can display a char half way, if it is rotated, but not if it is at angle 0 degrees. That makes no sense. Maybe someone would like to program a scrolling text so that chars appears on the right and disappears on the left.

Best regards
Thomas