I want to display an image in my VuePress markdown file. Normally, I'd go with:
However, I'd like to create a custom Vue component that will style the images in a specific way. Then, some images would be displayed using the "standard" markdown syntax (like above), and some others using my custom component.
With my custom component, I'd display the images like this:
<MyComponent src="./resources/myimg.png"/>
As you can see, the images are placed alongside my markdowns, in a resources directory. This makes sense for me, because the image is close to the markdown where it gets displayed.
Unfortunately, the image does not get displayed when I use MyComponent. VuePress (webpack?) handles the images during build and places them in some other directory with a different name. The "standard" Markdown image reference works fine, its URL to the image is set up correctly by VuePress. However, MyComponent does not work, because the src parameter is just a string for VuePress and it does not transform it in any way.
I know that one solution would be to place my images in the /vuepress/public folder. However, I would want to keep the same organization as I have now - images alongside documents.
How can I achieve that?
I had the same issue.
I used the answer #papey provides for a Vue question here
Here is one thing he suggests
<template>
<div id="app">
<img :src="require('./assets/logo.png')"/>
</div>
</template>
<script>
export default {
}
</script>
<style lang="css">
</style>
i have a pdf form that i need to be able to import as a background then use Dompdf to overlay html/text.
can this be done?
thanks
Dompdf is a library for converting HTML -> PDF. I'm no expert on that particular library but as far as I can tell it doesn't do things like overlaying html/text.
PDF cannot be imported into HTML because it isn't an HTML format and it isn't an image. There might be a parser library somewhere (e.g. http://www.pdfonline.com/easyconverter/sdk/pdf-to-html/), but without your own fairly extensive work you wont get that PDF document to be displayed in HTML.
HOWEVER, you CAN use something like this, it'll show your PDF document as the background, create a div that covers the screen just above the PDF document to make it non-interactive, then you can put all your contents above that. Note that there will be controls showing on the sides which as far as I know can't be prevented since they're provided by the browser when displaying a PDF file (you could use some fancy JS/CSS to prevent it I'm guessing but I don't know exactly how off the top of my head).
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>PDF as background</title>
</head>
<body>
<iframe src="http://unec.edu.az/application/uploads/2014/12/pdf-sample.pdf" style="width: 100vw; height: 100vh;position:absolute;top:0;z-index:0;"></iframe>
<div style="position:fixed;width:100%;height:100%;z-index:1"></div>
<div id="content" style="position: absolute;top:50%;left: calc(50% - 4cm);z-index:2">
<h1 style="font-size:20px;background:#00ff00;">I am on top of the PDF document!</h1>
</div>
</body>
</html>
I'm using Alex Michael's fantastic javascript filtrr library
to allow me to manipulate images on an HTML page. The question I have is how do I do an ajax/jquery post of an image that has been filtered inline on the page? For instance:
<div>
<img id="myimage" />
</div>
<input type="button" onclick="filterImage();" />
Once the filtering has been done, how do I post the contents of the image with id "myimage" back to a server-side PHP script so the filtered image can be saved? The tutorials I've seen for doing ajax image POSTs have all used file uploaders, which isn't what I'm looking for. I want to post an image from the HTML DOM.
Thanks!
Since the library you are using uses the Canvas element, the solution here should apply:
Uploading 'canvas' image data to the server
Rather than add Pin It buttons through our site, I would like to simply control what images show up in Pinterest's "Find Image" results if a user decides to pin one of our URLs.
As of now, "Find Images" allows the user to scroll through the images it finds on the page so they can select which image to pin. The "found" images start with the first jpg in the html file, I'm assuming (could that be a bad assumption??). On our site, this forces a user to scroll through about 15 navigation and promotion images before arriving at the featured product image. Is there any way to specify this image to show first in those results? Maybe through a meta tag, or by adding a class or id to the element?
Without a public Pinterest API, this seems like just guesswork, but I wanted to see if anyone else has run into this, or solved this. Thanks.
A lot of search results including the Pinterest Help Center talk about using nopin in HTML elements, which is invalid HTML. What they don't document is a data attribute to the same (well formed) effect.
<img src="foobar" data-pin-nopin="true" />
Adding the nopin attribute will exclude the image from appearing on Pinterest:
<img src="..." nopin>
I solved this by simply loading the image before all others in the page. In this case, I gave it width="0" and height="0" (you could also give it style="position: absolute; left: -9999px; top: 0;" just to be sure).
This won't break the page layout, but will force Pinterest to find this image first. The only downside is that the browser will load the page a few milliseconds slower, but if you're reusing this image later in the page anyway, you should make up for lost time then.
Pinterest will find any images from <img> tags (it will ignore CSS background images) that are at least 80px x 80px.
The order the images show up on in the Pinterest list is determined by the order they are specified in the HTML.
As you have discovered, you can alter the CSS of an image to "hide it" without actually hiding it by either moving it off the page with absolute positioning or 0 height and width. Any images that are set to display: none will not be picked up by Pinterest.
You can instruct the share preview to only grab specific images from the page by using the “image_include” configuration option. First, set image_include to your desired class name (id selectors are not allowed, only class selectors), then add that same class name to each of the images on the page that should be grabbed. For image_include, don’t add the ‘.’ selector. Here’s an example:
<script type="text/javascript">
var addthis_config = {
image_include: "at_include"
}
</script>
Once image_include has been defined with a class, add that class to the desired images on the page. In this example, the only images on the page that will be grabbed, will be the images with the at_include class (img1.jpg and img3.jpg).
<img src="http://www.example.com/img1.jpg" class="at_include" />
<img src="http://www.example.com/img2.jpg" />
<img src="http://www.example.com/img3.jpg" class="at_include" />
I was reading this blog which suggests the following:
Use the global no pin flag to prevent pinning on the whole site
Manually add the Pin It widget to those images you want to make pin-able.
Given Pinterest's webmaster tools appear to only have a blacklist, rather than a whitelist option (that you are seeking), this could be a possible solution. Another stated benefit of this is you can also supply suggested pin text through the Pin It widget.
Only downside to this I guess is that it may break the user's own Pin tools. Pinterest does allow you to supply a custom "denied" message, so I guess you can say "please use our site's pin buttons directly".
I've tried this, and it works. It seems like a decent approach, at least until Pinterest sees fit to add some better tools, such as an image whitelist option. The main drawback is needing to add Pin-it buttons on every image you want to enable for your users & your users may be annoyed that they can't pin anything.
Unfortunately, there is no way to mark several images on your page as preferred, but you can mark one image to stay at the top of your images when someone pin it. Specify this meta-tag in <head>:
<meta property="og:image" content="http://YOUR-DOMAIN.com/IMAGE.jpg"/>
I have not found official confirmation for this feature, but it works great with addthis sharing plugin.
Add this script before the actual call to pinterest. And set images that you do not want to show with a class called 'nopin'
<script type="text/javascript">
var addthis_config =
{
image_exclude:'nopin'
}
</script>
<div id="toolbox" class="addthis_toolbox addthis_default_style">
<a class="addthis_button_facebook_like" fb:like:layout="button_count"></a>
<a class="addthis_button_tweet"></a>
<a class="addthis_button_tumblr"></a>
<a class="addthis_button_pinterest"></a>
</div>
</div>
If anyone is using AddThis, please check this thread: http://support.addthis.com/customer/portal/questions/1570789
AddThis has some, uh, unique functionality that affects the image picker presented. As in, when there is only one image on the page, it ignores the defined og:image.
If you set that lone image to be excluded, then the image picker won't show any images for selection.
I have a site that creates images for some bit of content after the content is created. I'm trying to figure out what to do in between the time the content is created and the image is created. My thought is that I might be able to set a custom image to display on a 404 error on the original image. However, I'm not sure how to do this with lighttpd. Any ideas or alternatives?
EDIT: The issue is the user isn't the one creating the content, it's being created by a process. Basically we are adding items to a catalog and we want to create a standardized catalog image from an image supplied by the product provider. However, I don't want a slow server on the provider end to slow down the addition of new products. So a separate process goes through and creates the image later, where available. I guess I could have the system create a default image when we create the product and then overwrite it later when we create the image from the provider supplied image.
Another alternative on the client side is to do:
<img src="/images/generated_image_xyz.png"
onerror="this.src='/images/default_image.png'; this.title='Loading...';" />
Use the <object> tag in HTML with a fallback to the default image.
<P> <!-- First, try the Python applet -->
<OBJECT title="The Earth as seen from space"
classid="http://www.observer.mars/TheEarth.py">
<!-- Else, try the MPEG video -->
<OBJECT data="TheEarth.mpeg" type="application/mpeg">
<!-- Else, try the GIF image -->
<OBJECT data="TheEarth.gif" type="image/gif">
<!-- Else render the text -->
The <STRONG>Earth</STRONG> as seen from space.
</OBJECT>
</OBJECT>
</OBJECT>
</P>
(Example from w3.org)
As I understand your problem: You want to show an intermediate image until the real image has been generated?
You could display a loading image and use AJAX to change that DOM node into the real image when it's been created. You could write it from scratch or use any of the well known and stable AJAX libraries out there, if you have no preference of your own take a look at jQuery.
Further to #kentlarsson - if you want to do it via Javascript, I recently found this code:
http://jquery.com/plugins/project/Preload and the demo at http://demos.flesler.com/jquery/preload/placeholder/ which does as he suggests - with its 'notFound' option.
I don't know enough about lighttpd to tell you about setting up a custom image with one or more subdirectories in a site though.
I think you could probably solve this on the client side alone.
Based on Jaspers' answer, you could do:
<OBJECT data="/images/generated_image_xyz.png" type="image/png">
Loading..<blink>.</blink>
</OBJECT>
Also layering backgrounds using CSS you could do:
<style type="text/css">
.content_image { width:100px; height: 100px;
background: transparent url('/images/default_image.png') no-repeat }
.content_image div { width:100px; height: 100px; }
</style>
<div class="content_image">
<div style="background:
transparent url('/images/generated_image_xyz.png') no-repeat" />
</div>
The latter solution assumes you don't have any transparency in your generated image.