I have created image layer and text layer using fabric js api. Always text layer is behind the image layer. How to bring the text layer in front?
To bring text layer on top of image layer. Like z- index in css.
You need to set sendtoBack for image. Then text layer will be in front. canvas.sendToBack(img);
Try reversing the order you are creating the objects. For the text to appear in front of the image, add image object first followed by the text object.
Related
Hello guys
I'm making a simple image editor in react native. In which I'm adding multiple text over a image. But as soon as I added one more text over image, the all text comes to an initial position, but I want to place them as where they were before.
Like in PicsArt
where we can add multiple text over image and all the text have their position where they moved or dragged and resized. When the new text is added, previous text have their previous position.
How to do that?
I want to insert an image in another image.
One is the template and the other one is the source.
The template image has a rectangular transparent area and I want to insert my source image to fit that transparent area.
Is this possible with Javascript?
You can use sharp in node to do the image processing:
https://www.npmjs.com/package/sharp
Given some shape, I would like it to be clickable on its filled parts, and not clickable (thus clicking through to the element behind it) on its transparent parts. Here's an example of a triangle shape:
Black lines are bounding box lines. I would like to be able to select text, or interact with any element that is within bounding box (green-outlined areas), but not covered with the filled part.
I tried SVG with pointer-events set to every possible value, but it does not seem to work. Preferred solution would make us of html5, css and png image, but every working solution is welcomed.
You can add style property
pointer-event:none
to Image it will help you out through the image
Note: it will work only to modern browsers
I have an image and I want to restrict the clickable area on this image. I want user to click only particular area. I want to obtain a darker view out side of this clickable area. How could I achieve this usin java script and/or jquery.
Kind regards
There are many ways to implement the clickable area:
using image map :
http://en.wikipedia.org/wiki/Image_map
Take a look at this website : http://odyniec.net/projects/imgareaselect/
or using divs and z-index.
It might be difficult, but if you use a to determine a clickable area first, you can use jquery to do something like this:
On hover over the mapped area, Show a transparent black div, the same size as the image. (This makes the image darker)
Place another div on top of that, with the same dimensions as the image. (this contains the small map-sized container for the new image)
Place another div INSIDE of the last to be the same size and position as your mapped area. (This will contain the original image - not darkened)
Place the image again INSIDE of the last div and position it so it lines up with the original image.
This should show something like what you're talking about.
If it's more complicated than this, I'm sure we will ALL need an example and all of the outcomes of these images. I don't think there's enough detail to give you a real answer.
I have an OpenLayers based heat map that is populated with various heatmap layers, red yellow green gradients etc. I want to take the gradients/dots only with a white background, excluding the map totally. However when I save the bmp images I get a grey-ish background. How can I make sure I have a white background? My save code is like this -called from a button click jquery event-
Canvas2Image.saveAsBMP(heatLayers[currentHeat].canvas);
Saving the files as PNG took care of the issue.