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protvista-saver

v3.8.22

Published

Saver component for ProtVista components

Downloads

23

Readme

Published on NPM

<protvista-saver>

The protvista-saver component is used to download the ProtVista svg as images. By default, it renders a download button. It can be modified to include different content although the first child element provided should be a button.

The component to be saved is bound to protvista-saver though the element-id property.

The background color is none by default. It can be set through the background-color attribute. The name and format of the file to be downloaded are passed as file-name and file-format respectively.

There are two methods available : preSave() and postSave(). These functions allows any manipulations to DOM before and after painting on the canvas.

Demo

Usage

<protvista-saver element-id="track" id="#saver" />

Passing different content to render other than the default

<protvista-saver element-id="just-tracks" file-name="tracks" file-format="jpeg" background-color="#ddddee">
    <button>Download Just Tracks</button>
</protvista-saver>

Using preSave() and postSave()

document.querySelector("#saver").preSave = () => {
  const base = document.querySelector("#track");
  const title = document.createElement("h2");
  title.setAttribute("id", "tmp_title_element");
  title.innerHTML = "ProtVista Snapshot";
  base.insertBefore(title, base.firstChild);
};
//removes the title from the DOM
document.querySelector("#saver").postSave = () => {
  document
    .querySelector("#track")
    .removeChild(document.getElementById("tmp_title_element"));
};

API Reference

Properties

element-id: string

The Id of the component to be saved.

background-color: string

The background color for the canvas.

file-name: string

The file name to be used to save locally.

file-format: string

The format of the image. Accepted formats are png, jpeg, bmp, tiff and gif.

preSave: method

The DOM manipulation if needed to be done before printing on the canvas.

postSave: method

The things that were changed during the preSave needed to be reverted in the postSave.