How to provide TableModelHandler ColumnType for different columns about libui

[AndyObtiva]

OK, nevermind. I figured it out by typing in the following:

@model_handler.ColumnType   = rbcallback(4, [1, 1, 4]) do |_, _, column|
  # return value based on column

[kojix2]

Hi Andy!

Test page16.c in andlabs/libui is a good reference on how to use the table.
The executables for these tests can be downloaded from the release page.
(Also, issue #310 shows what andlabs and others had in mind when they designed libui table.)

page16.c screenshot

Here, they use if statements to set the type of each column.

https://github.com/andlabs/libui/blob/fea45b2d5b75839be0af9acc842a147c5cba9295/test/page16.c#L11-L20

static uiTableValueType modelColumnType(uiTableModelHandler *mh, uiTableModel *m, int column)
{
	if (column == 3 || column == 4)
		return uiTableValueTypeColor;
	if (column == 5)
		return uiTableValueTypeImage;
	if (column == 7 || column == 8)
		return uiTableValueTypeInt;
	return uiTableValueTypeString;
}

mh.ColumnType = modelColumnType;

In Ruby, it would be something like this:

model_handler.ColumnType = rbcallback(4, [1, 1, 4]) do | _mh, _m, column|
  case column
  when 3, 4
    3
  when 5
    1
  when 7, 8
    2
  else
    0
  end
end 

All column types can be referenced from here.

https://github.com/andlabs/libui/blob/fea45b2d5b75839be0af9acc842a147c5cba9295/ui.h#L1199-L1204

_UI_ENUM(uiTableValueType) {
	uiTableValueTypeString,
	uiTableValueTypeImage,
	uiTableValueTypeInt,
	uiTableValueTypeColor,
};

Currently, there is no way to reference uiTableValueType in Ruby's LibUI, so it might be better to define constants.

Thank you!

---

           ↓
rbcallback(4, [1, 1, 4])

uiTableValueType is an enumeration type. In fiddle, enumeration constants are fine with 4 (int).
This may not be documented. I asked the developer of fiddle directly in the online forum.

[kojix2]

I see you have resolved the issue.

[AndyObtiva]

Thanks a lot for the response. I did need to figure out the numbers to return for each column type, so this is very helpful.