1 ACCEPTED SOLUTION
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Hello @Thomas8607 ,
Replying to :
"
Hi Gaetan!
I modified the T9 keyboard a bit, what is finished is what it should be, but I can't supplement it with the following:
- a negative sign can only be placed in the first place (I entered a condition, but it doesn't work as I thought)
- if the buffer reaches the set limit, the keys cannot be pressed (numbers and "-", "."). If the size of the buffer is 10, I can still write into it and the simulator crashes
- only one decimal point can be entered and not in the first place.
If there is a negative signal in the buffer, then the output is int32_t, if there is not, then uint32_t. If there is a decimal point, it should be a float.
I don't know if this can be solved.
How can the widget be packaged so that I don't have to attach the whole project?
I would like to ask for help with these, if possible.
Thank you!
Regards,
Thomas Soronics
"
From what I have tried, I am able to put the minus sign on the 2 first characters. This is because the position starts at -1 and your condition is "position <= 0" which is true for values -1 and 0.
Simply change it to "position < 0".
There is also an error about the buffer size.
You store the characters in the buffer that you create, however, in your text area wildcard, you used a buffer of size 10 inside Designer:
The buffer in Designer have to have one more element to it which is the end of string character. So to display 10 characters, you need to set the buffer to 11.
Finally, you set the condition as "positionText <= 10", however, since the buffer initial position is -1 you actually get every value in [-1 ; 10] which is 12.
What you actually want is values between [-1; 10[ (1 included to 10 excluded) to get 10 characters.
So you should change "positionText <= 10" to "positionText < 9".
Last thing about the decimal point.
I see that you have set the "." as a regular character.
You should have instead made the point as a special character just like you did with the minus sign.
However, you can still make it work as a regular character by adding conditional statement in the functionWriteButtonCharacter function.
Here is what I have changed to make it work :
void containerNumKeyboard::functionWriteButtonCharacter(uint8_t value)
{
if (positionText < 9){ // string length limit
if(value == '.')
{
if( (positionText < 0) || isDot ) // either already have a dot or is at first position
{
return; // so it is wrong call to point character so don't do anything.
}
}
if(value == '.') isDot = true;
positionText++;
buffer[positionText] = value; //adds the character to the string char (buffer)
Unicode::strncpy(textAreaKeyboardBuffer, buffer, TEXTAREAKEYBOARD_SIZE);// assign the string to the Text
textAreaKeyboard.resizeHeightToCurrentText();
textAreaKeyboard.invalidate();
}
else
{
touchgfx_printf("Buffer is full\n");
}
}
I think it is better if we keep the discussion about this here and only use the widget discussion to publish widgets.
I hope this helps you!
Regards,
