Set the dimensions of the style div to match those of the image it contains

Question

Set the dimensions of the style div to match those of the image it contains

I am struggling to position a div or button so that it matches the dimensions of the image it contains, without exceeding the dimensions of the parent div(s).

Despite my efforts, I can't seem to get it right for both vertical and horizontal images. When I adjust the box for the horizontal image, the vertical one ends up overflowing at the bottom.

It's important to note that I have no control over the image itself as it may come in various aspect ratios and sizes. Additionally, the outermost div is determined by the user's window size.

function log() {
  console.log("Click!");
}

.container {
  height: 100%;
  width: 50%;
  display: block;
  padding: 0;
  background-color: lightgreen;
}

.zoom {
  display: block;
  max-height: max-content;
  max-width: max-content;
  height: 100%;
  width: 100%;
  margin: auto;
  background-color: aqua;
}

img {
  max-height: 100%;
  max-width: 100%;
  height: 100%;
  width: 100%;
  object-fit: contain;
}

<div style="height: 500px; display: flex; flex-direction: row; overflow: scroll; background-color: lightgray">
  <div class="container">
    <div class="zoom" onclick="log()">
      <img src="https://upload.wikimedia.org/wikipedia/commons/0/0f/Eiffel_Tower_Vertical.JPG" />
    </div>
  </div>
  <div class="container">
    <div class="zoom" onclick="log()">
      <img src="https://upload.wikimedia.org/wikipedia/commons/f/f6/Eiffel_tower_at_dawn_horizontal.jpg" />
    </div>
  </div>
</div>

Desired outcome:

In this scenario, I have two divs - container (green) and zoom (aqua). The size of the container is dependent on the user's window size and the zoom div contains an image that should fill as much of the container's area while maintaining its aspect ratio and being centered. This might result in some empty space around the sides or top/bottom of the picture based on the image's aspect ratio. I need the size and position of the zoom div to match exactly with the image as an event handler is attached to it.

The green section represents the container while the aqua section displays either a portrait or landscape image. The goal is to ensure that the dimensions and positioning of zoom align perfectly with the image.

https://i.sstatic.net/1C0m1.png

html css image

Answer 1

Answer №1

const btn = document.querySelector("button");
const images = document.querySelectorAll("img");

btn.addEventListener("click", function (event) {
  for (let j = 0; j < images.length; j ++) {
    images[j].classList.toggle("hidden");
  }
});

div{
  display: flex;
  flex-flow: row nowrap;
  justify-content: center;
  align-content: center;
  align-items: center;
  outline: 1px dashed blue;
  height: 100vh;
  width: 100%;
}

img{
  max-width: 100%;
  width: auto;
  max-height: 100%;
  height: auto;
  flex: 1 1 auto;
}

.hidden{
  display:none;
}

<button>toggle</button>
<div>
<img src="https://www.example.com/image1.jpg" alt="pic1">

<img src="https://www.example.com/image2.jpg" alt="pic2" class="hidden">

</div>

Answer 2

const btn = document.querySelector("button");
const images = document.querySelectorAll("img");

btn.addEventListener("click", function (event) {
  for (let j = 0; j < images.length; j ++) {
    images[j].classList.toggle("hidden");
  }
});

div{
  display: flex;
  flex-flow: row nowrap;
  justify-content: center;
  align-content: center;
  align-items: center;
  outline: 1px dashed blue;
  height: 100vh;
  width: 100%;
}

img{
  max-width: 100%;
  width: auto;
  max-height: 100%;
  height: auto;
  flex: 1 1 auto;
}

.hidden{
  display:none;
}

<button>toggle</button>
<div>
<img src="https://www.example.com/image1.jpg" alt="pic1">

<img src="https://www.example.com/image2.jpg" alt="pic2" class="hidden">

</div>

Answer 3

Answer №2

Utilizing background-image in CSS can present a great opportunity! CSS offers various properties like background-repeat, background-size, and background-position that can assist us in incorporating images within a box. The beauty of it is that if we wish to switch images using JS, all we need to do is assign a new value to style.backgroundImage.

Feel free to experiment with adjusting the picsum image size or other properties related to the background- properties when you execute the provided code snippet!

#img-container-wide {
  width: 200px;
  height: 100px;
  border: 1px solid green;
  display: flex;
  justify-content: center;
  align-items: center;
  background-image: url("https://picsum.photos/200/300");
  background-repeat: no-repeat;
  background-size: contain;
  background-position: center;
}

#img-container-tall {
  width: 100px;
  height: 200px;
  border: 1px solid blue;
  display: flex;
  justify-content: center;
  align-items: center;
  background-image: url("https://picsum.photos/200/300");
  background-repeat: no-repeat;
  background-size: contain;
  background-position: center;
}

<div id="img-container-wide"></div>
<div id="img-container-tall"></div>

Answer 4

Utilizing background-image in CSS can present a great opportunity! CSS offers various properties like background-repeat, background-size, and background-position that can assist us in incorporating images within a box. The beauty of it is that if we wish to switch images using JS, all we need to do is assign a new value to style.backgroundImage.

Feel free to experiment with adjusting the picsum image size or other properties related to the background- properties when you execute the provided code snippet!

#img-container-wide {
  width: 200px;
  height: 100px;
  border: 1px solid green;
  display: flex;
  justify-content: center;
  align-items: center;
  background-image: url("https://picsum.photos/200/300");
  background-repeat: no-repeat;
  background-size: contain;
  background-position: center;
}

#img-container-tall {
  width: 100px;
  height: 200px;
  border: 1px solid blue;
  display: flex;
  justify-content: center;
  align-items: center;
  background-image: url("https://picsum.photos/200/300");
  background-repeat: no-repeat;
  background-size: contain;
  background-position: center;
}

<div id="img-container-wide"></div>
<div id="img-container-tall"></div>

Answer 5

Answer №3

The implementation using flex results in the image shifting between center and left alignment when resizing the browser window, with the right image failing to be centered properly in Safari 16.2. To address this, the CSS below ensures that .zoom is centered both vertically and horizontally within .container, maintaining the image's aspect ratio regardless of window size:

.outer-wrapper {
  min-height: 100%;
  display: flex;
  flex-direction: row;
}

.container {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.zoom {
  height: fit-content;
  width: fit-content;
}

img {
  max-width: 100%;
  max-height: 100%;
  display: block;
}

To accommodate varying image sizes, JS has been included to fetch random images dynamically for demonstration purposes:

/* For demo only */
let img_one = document.getElementById("img-1");
let img_two = document.getElementById("img-2");

function changeImages() {
  setImage(img_one, 800, 1200);
  setImage(img_two, 1800, 800);
}

function setImage(img, x, y) {
  img.setAttribute("src", `https://picsum.photos/${x-randomInt(50,400)}/${y-randomInt(50,400)}`);
}

function randomInt(min, max) {
  return Math.floor(Math.random() * (max - min + 1) + min)
}

/* For demo only */

.outer-wrapper.demo {
  height: 300px;
  margin: 0;
  padding: 0;
  background-color: lightgray;
}

.container.demo {
  border: solid 1px #000;
  background-color: lightgreen;
}

.zoom.demo {
  background-color: aqua;
}


/* Required */

.outer-wrapper {
  min-height: 100%;
  display: flex;
  flex-direction: row;
}

.container {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.zoom {
  height: fit-content;
  width: fit-content;
}

img {
  max-width: 100%;
  max-height: 100%;
  display: block;
}

Click the button below to update images <button onclick="changeImages()">
  Update Images
</button>

<div class="outer-wrapper demo">
  <div class="container demo">
    <div class="zoom demo">
      <img id="img-1" />
    </div>
  </div>
  <div class="container demo">
    <div class="zoom demo">
      <img id="img-2" />
    </div>
  </div>
</div>

Answer 6

The implementation using flex results in the image shifting between center and left alignment when resizing the browser window, with the right image failing to be centered properly in Safari 16.2. To address this, the CSS below ensures that .zoom is centered both vertically and horizontally within .container, maintaining the image's aspect ratio regardless of window size:

.outer-wrapper {
  min-height: 100%;
  display: flex;
  flex-direction: row;
}

.container {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.zoom {
  height: fit-content;
  width: fit-content;
}

img {
  max-width: 100%;
  max-height: 100%;
  display: block;
}

To accommodate varying image sizes, JS has been included to fetch random images dynamically for demonstration purposes:

/* For demo only */
let img_one = document.getElementById("img-1");
let img_two = document.getElementById("img-2");

function changeImages() {
  setImage(img_one, 800, 1200);
  setImage(img_two, 1800, 800);
}

function setImage(img, x, y) {
  img.setAttribute("src", `https://picsum.photos/${x-randomInt(50,400)}/${y-randomInt(50,400)}`);
}

function randomInt(min, max) {
  return Math.floor(Math.random() * (max - min + 1) + min)
}

/* For demo only */

.outer-wrapper.demo {
  height: 300px;
  margin: 0;
  padding: 0;
  background-color: lightgray;
}

.container.demo {
  border: solid 1px #000;
  background-color: lightgreen;
}

.zoom.demo {
  background-color: aqua;
}


/* Required */

.outer-wrapper {
  min-height: 100%;
  display: flex;
  flex-direction: row;
}

.container {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.zoom {
  height: fit-content;
  width: fit-content;
}

img {
  max-width: 100%;
  max-height: 100%;
  display: block;
}

Click the button below to update images <button onclick="changeImages()">
  Update Images
</button>

<div class="outer-wrapper demo">
  <div class="container demo">
    <div class="zoom demo">
      <img id="img-1" />
    </div>
  </div>
  <div class="container demo">
    <div class="zoom demo">
      <img id="img-2" />
    </div>
  </div>
</div>

Answer 7

Answer №4

To eliminate the blank space beneath the image, consider setting either img { display: block; } or img { vertical-align: bottom; }. It's important to note that this whitespace is not due to padding. By default, images have a display of inline, which can result in unexpected behavior such as extra whitespace below the image for descenders (the parts of letters that extend below the baseline, like 'y' and 'p').

Answer 8

To eliminate the blank space beneath the image, consider setting either img { display: block; } or img { vertical-align: bottom; }. It's important to note that this whitespace is not due to padding. By default, images have a display of inline, which can result in unexpected behavior such as extra whitespace below the image for descenders (the parts of letters that extend below the baseline, like 'y' and 'p').

Answer 9

Answer №5

Through some experimentation, I have successfully created a working example using display: flex, with guidance from @DataMoose:

function print() {
 console.log("Clicked!");
}

.container {
  display: flex;
  flex-direction: column;
  justify-content: center;
  height: 100%;
  width: 50%;
  padding: 0;
  background-color: lightgreen;
}

.zoom {
  max-height: 100%;
  max-width: 100%;
  margin: 0 auto;
 
  background-color: aqua;
}

img {
  display: block;
  max-width: 100%;
  max-height: 100%;
}

<div style="height: 300px; display: flex; flex-direction: row; overflow: scroll; background-color: lightgray">
  <div class="container">
    <div class="zoom" onclick="print()">
      <img src="https://upload.wikimedia.org/wikipedia/commons/0/0f/Eiffel_Tower_Vertical.JPG" />
    </div>
  </div>
  <div class="container">
    <div class="zoom" onclick="print()">
      <img src="https://upload.wikimedia.org/wikipedia/commons/f/f6/Eiffel_tower_at_dawn_horizontal.jpg" />
    </div>
  </div>
</div>

Answer 10

Through some experimentation, I have successfully created a working example using display: flex, with guidance from @DataMoose:

function print() {
 console.log("Clicked!");
}

.container {
  display: flex;
  flex-direction: column;
  justify-content: center;
  height: 100%;
  width: 50%;
  padding: 0;
  background-color: lightgreen;
}

.zoom {
  max-height: 100%;
  max-width: 100%;
  margin: 0 auto;
 
  background-color: aqua;
}

img {
  display: block;
  max-width: 100%;
  max-height: 100%;
}

<div style="height: 300px; display: flex; flex-direction: row; overflow: scroll; background-color: lightgray">
  <div class="container">
    <div class="zoom" onclick="print()">
      <img src="https://upload.wikimedia.org/wikipedia/commons/0/0f/Eiffel_Tower_Vertical.JPG" />
    </div>
  </div>
  <div class="container">
    <div class="zoom" onclick="print()">
      <img src="https://upload.wikimedia.org/wikipedia/commons/f/f6/Eiffel_tower_at_dawn_horizontal.jpg" />
    </div>
  </div>
</div>

Set the dimensions of the style div to match those of the image it contains

Answer №1

Answer №2

Answer №3

Answer №4

Answer №5

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