Swap element in slide master?

[jhaase1]

I am trying to swap an element on roots; however, I am not understanding the syntax. From the example the addMaster function is used, but trying to run a similar code (because I don't have the presentations) I am getting the error. Can someone help with the syntax? Once I understand it I can add some new examples

Can't find element on slide 1 in root:
{
presName: 'root',
slideNumber: 1,
selector: 'MasterRectangle',
mode: 'modify',
callback: [Function (anonymous)]
}

[singerla]

Hi! You can also take a look at this file.

If you are planning to remove/add elements on a master slide, you could try this:

  const automizer = new Automizer({
    templateDir: `${__dirname}/../__tests__/pptx-templates`,
    outputDir: `${__dirname}/../__tests__/pptx-output`,
    removeExistingSlides: true,
  });

  const pres = automizer
    .loadRoot(`RootTemplate.pptx`)
    .load(`RootTemplate.pptx`, 'root')
    .load('SlideWithShapes.pptx', 'shapes')

    // Import first slide master and all its slide layouts:
    .addMaster('root', 1, (master) => {
      master.removeElement('UnusedShape');
      master.addElement(`shapes`, 1, 'Cloud 1');
    });

    // Add a slide:
    .addSlide('root', 1, (slide) => {
      // use the modified master
      slide.useSlideLayout();
    });

  pres.write(`myOutputPresentation.pptx`).then((summary) => {
    console.log(summary);
  });

It is important to know that this library is currently not able to modify something in place. You always need to add something to apply a modification. The code above needs to import "RootTemplate.pptx" twice, one for root and one for appending slides. Hope this helps! :)

[jhaase1]

There weren't any existing templates with an image in the slide master, so I needed to make my own. As far as I can tell this should be analogous to the "ModifyTextHelper" test in the file you linked. However, I am now throwing an error. Code and error both below

export async function test() {
  const automizer = new Automizer({
    templateDir: `~/Downloads`,
    outputDir: `~/Downloads`,
    mediaDir: `~/Downloads`,
    removeExistingSlides: true,
    cleanup: true,
  });

  const pres = automizer
    .loadRoot(`blue.pptx`)
    .load(`blue.pptx`, 'base')
    .loadMedia([`blue_with_red_cross.png`]);

  pres.addMaster('base', 1, (master) => {
    master.modifyElement(
      'Sidebar', [
      ModifyImageHelper.setRelationTarget('blue_with_red_cross.png'),
    ]);
  });

  const result = await pres.write(`modify-image-in-master.test.pptx`);
}

Importing slideMaster 4
Importing slideLayout 22
Importing slideLayout 23
Importing slideLayout 24
Importing slideLayout 25
Importing slideLayout 26
~\node_modules\pptx-automizer\dist\shapes\image.js:20
        this.sourceFile = shape.target.file.replace('../media/', '');
                                       ^

TypeError: Cannot read properties of undefined (reading 'file')
    at new Image (~\node_modules\pptx-automizer\dist\shapes\image.js:20:40)
    at Master.<anonymous> (~\node_modules\pptx-automizer\dist\classes\has-shapes.js:201:31)
    at Generator.next (<anonymous>)
    at fulfilled (~\node_modules\pptx-automizer\dist\classes\has-shapes.js:5:58)

Node.js v20.9.0

blue_with_red_cross
blue.pptx

[singerla]

I can confirm this should work, but it doesn't. I need to go deeper into it, thanks a lot for reporting on this.

[singerla]

The relation target for swapping an image on a slideMaster was not set correctly. This is fixed with v 0.4.7

[jhaase1]

Thank you!