Editing visibility of drawing object

[Ralim]

Description

I have a xlsm file that contains drawing objects (buttons), and I would like to be able to edit the visibility of these.

I've been looking around and it looks like this library does not currently expose/parse these objects. (or I've totally missed it)

So I would love to get to a SetDrawingVisible similar to the SetRowVisible command.

Happy to code this if you have some pointers of how best to add this in.

I think it would be roughly:

1. Somehow lookup the drawing xml file
2. Create a reader for this file
3. Walk the tree to find the drawing
4. Edit
5. Save changes

Obviously that feels simple and I've been poking around a bit but haven't yet put the concept together, so would love some pointers / if its trivial to do and I'm missing it feel free to tell me that :)

Describe the results you received:

Cant find anything in the existing API to let me edit these

Describe the results you expected:

Was really hoping for a SetDrawingVisible or similar :)

Output of go version:

go version go1.16.6 linux/amd64

Excelize version or commit ID:

f9e9e5d2e07b

Environment details (OS, Microsoft Excel™ version, physical, etc.):

** Example xml content I would like to be able to edit**

(Some data removed for simplicity)

    <xdr:oneCellAnchor>
        <xdr:from>
            <xdr:col>9</xdr:col>
            <xdr:colOff>62346</xdr:colOff>
            <xdr:row>11</xdr:row>
            <xdr:rowOff>106166</xdr:rowOff>
        </xdr:from>
        <xdr:pic macro="[0]!shtest.btn_Click">
            <xdr:nvPicPr>
                <xdr:cNvPr id="194" name="btn" hidden="1">
                    <a:extLst>
                        <a:ext uri="{FF2B5EF4-AAAA-BBBB-CCCC-F238E27FD236}">
                            <a16:creationId xmlns:a16="http:https://schemas.microsoft.com/office/drawing/2014/main" id="{E97E1194-C81D-BBBB-AAAA-3509A8EF5EF8}"/>
                        </a:ext>
                    </a:extLst>
                </xdr:cNvPr>
            </xdr:nvPicPr>
            <xdr:blipFill>
                <a:blip xmlns:r="http:https://schemas.openxmlformats.org/officeDocument/2006/relationships" r:embed="rId1"/>
                <a:stretch>
                    <a:fillRect/>
                </a:stretch>
            </xdr:blipFill>
        </xdr:pic>
        <xdr:clientData fPrintsWithSheet="0"/>
    </xdr:oneCellAnchor>