GetConditionalFormats need get databar gradient

[ShowerBandV]

Description
When I tried to use GetConditionFormats to obtain the conditional format of a data bar, I didn't know if the data bar was gradient filled. I looked at the XML and found that if it wasn't gradient filled, there would be an attr with gradient="0". If it was gradient filled, there wouldn't be this attr. I hope excelize can support the function of obtaining whether the data bar is gradient filled

<x14:cfRule type="dataBar" id="{259B75A4-6F18-4B61-83F0-580C0D906035}">
<x14:dataBar minLength="0" maxLength="100" gradient="0">
<x14:cfvo type="autoMin"/>
<x14:cfvo type="autoMax"/>
<x14:negativeFillColor rgb="FFFF0000"/>
<x14:axisColor rgb="FF000000"/>
</x14:dataBar>
</x14:cfRule>

test (2).xlsx

[xuri]

Thanks for your issue. I have fixed this. Please upgrade to the master branch code, and this patch will be released in the next version. Please determine the gradient data bar with the BarSolid field, for example:

package main

import (
    "fmt"

    "github.com/xuri/excelize/v2"
)

func main() {
    f, err := excelize.OpenFile("test.2.xlsx")
    if err != nil {
        fmt.Println(err)
        return
    }
    defer func() {
        if err := f.Close(); err != nil {
            fmt.Println(err)
        }
    }()
    cfs, err := f.GetConditionalFormats("Sheet1")
    if err != nil {
        fmt.Println(err)
        return
    }
    for _, cf := range cfs {
        for _, rule := range cf {
            fmt.Println("is gradient:", !rule.BarSolid)
        }
    }
}