How to change the value of the grid dynamically? 🙏

[Cicorione]

Dear @pgundlach I can't stop to say thank you, again and again! Sorry! 😁

This question might be useful for someone else too, so better makes it public.

I realized that I need to change dynamically the grid based on the items I have inside each category.

A viable solution I thought is to create create an upper group to handle this situation (perhaps it is not semantically correct yet... 😓) :

<Record element="global">
    <ProcessNode select="*" />
</Record>

<Record element="global">
    <Group name="container-grid">
        <Contents>
            <!-- CASE A -->
            <Switch>
                <Case test="@3x2 = 'true'">
                    <Grid nx="3" ny="2" />
                </Case>   
            </Switch>

            <!-- CASE B -->
            <Switch>
                <Case test="@4x4 = 'true'">
                    <Grid nx="4" ny="4" />
                </Case>   
            </Switch>

            <!-- CASE C -->
            <Switch>
                <Case test="@6x1 = 'true'">
                    <Grid nx="6" ny="1" />
                </Case>   
            </Switch>

            <!-- YOUR REAL CONTENT -->
            <ForAll select="local">
                <Contents>
                    <Group name="real-unit">
                        <Grid nx="1" ny="1" />
                        <.../>
                    </Group>
                </Contents>
            </ForAll>

            <PalaceObject groupname="real-unit" />

        </Contents>
    </Group>
</Record>

But I wonder if can use <Switch> on the global <SetGrid> and have the code more readable.

Thank in advance! 🙏

C.

[pgundlach]

You can do something like this:

data.xml:

<data gridx="4" gridy="5" />

Layout:

<Layout xmlns="urn:speedata.de:2009/publisher/en"
    xmlns:sd="urn:speedata:2009/publisher/functions/en">
    <Trace grid="yes" />
    <Record element="data">
        <SetGrid nx="{@gridx}" ny="{@gridy}" />
        <PlaceObject>
            <Textblock>
                <Paragraph>
                    <Value>aaaa</Value>
                </Paragraph>
            </Textblock>
        </PlaceObject>
    </Record>
</Layout>

or if you need a switch case statement:

<data gridtype="4x5" />

and

<Layout xmlns="urn:speedata.de:2009/publisher/en"
    xmlns:sd="urn:speedata:2009/publisher/functions/en">
    <Trace grid="yes" />
    <Record element="data">
        <Switch>
            <Case test="@gridtype = '4x5'">
                <SetGrid nx="4" ny="5" />
            </Case>
        </Switch>
        <PlaceObject>
            <Textblock>
                <Paragraph>
                    <Value>aaaa</Value>
                </Paragraph>
            </Textblock>
        </PlaceObject>
    </Record>
</Layout>

You just need to make sure that the grid is set before anything is placed in the PDF, so this must be pretty much the first statement.

[Cicorione]

Great! 👏👏👏

This is extremely important for me but I'd like to finish other stuff before to test such a critical feature!

[Cicorione]

@pgundlach hank you very much, the first method was easier to implement. 🙏