Would you like your help in figuring out why the images don't fit?
Why aren't they responsive?
Based on the rounded image "NO IMAGE AVALIABLE" I would always like to see it in its entirety, that is, always see the circle memo if you cannot read the text.
This time I have a very reduced code.
My code here
Related
Trying to simply display an image at it's full size, which is bigger then the screen width and height. I do not care because I am developing a page for pinch and pan. So, the image will be off the screen anyways, and I would like to use a bigger image for pinch and pan, and it keeps setting the width to screen width when I just want it to show at real height and width. I've tried absolute layout, relative, and stack, nothing works. Here's my current code:
<controls:GestureFrame x:Name="GestureFrameMain">
<Image x:Name="ImageMain"/>
</controls:GestureFrame>
and in the backend, I simply set the source:
ImageMain.Source = Xamarin.Forms.ImageSource.FromUri(new System.Uri(PageParametersImageZoom.Image.BigImageURL));
I can verify that the URL has an image that is much larger than the screen size, here's an example of an image that would come back:
http://www.stage.newser.com/image/1088966-0-20161020082458.jpeg
And as you can see it's much larger than the dimensions of the screen, however, when I set the source, the image appears to be at screen size. I've attached an image of the result on the page, which clearly shows the image being downsized by Xamarin.
EDIT the pinch and pan itself is not the problem. When I pinch/pan the image obviously gets larger and goes off screen. I am talking about the initial load of the page, I would like the image to show at its real size.
Looks like the only way I was able to do this was by using a AbsoluteLayout and specifying the widhrequest/heightrequest properties on the image.
I Have an image for a homepage screen. The top part of the image when clicked should lead to the second tab, the left hand side of the image when clicked goes to the third tab and so on.
Basically geotagging an image , so that i can make areas of the image clickable leading to different tabs
I tried implementing using a map chart where i added an image layer, and added this image. Some solutions asked me to add a marker layer with x,y coordinates but I'm unsure on how to proceed on my image
Kindly help with any alternative solution
it sounds like you want an image map. "geo tagging" is when geographic info like latitude and longitude are added to an image.
your best bet is to use a text area with a table filled with image-type action controls. if you have Photoshop, you can use a technique called Image Slicing to prepare your images.
FYI, this is probably not a simple task, especially if you don't know much about HTML. you may want to consider a different navigation scheme.
if you update your question with more detail about the end result you are trying to achieve, maybe someone can share a more fitting solution. http://mywiki.wooledge.org/XyProblem
Thanks for reading this question :)
Goal:
I am using Fabric.js as a base for image editor (crop and resize features for now mostly).
My goal is to load some high-quality image (like photos) rotate or crop it and then export as DataURL (in original quality or near to it).
Solution:
To add such a big photo on canvas and be able to export it bad with the same quality - I set width and height of canvas equal to image's width and height (2560 × 1600px) and then compress it using css to 640x400px (editor size). (I used https://stackoverflow.com/a/17035046 as a base)
In this case I still can export image in big dimension using canvas.toDataURL() - it will be about 2560x1600 (this is my goal).
How it works: http://jsfiddle.net/handmade/Lqsb0kwv/4/
Problem description:
I've got a problem after adding zoom feature (canvas.zoomToPoint(...)) to my editor and it is related to css width and height limitation of canvas.
Try to change size of image using controls in jsfiddle above and you will see an issue.
Works fine if...
...if I don't use css limitation: http://jsfiddle.net/handmade/Lqsb0kwv/5/
Questions:
I've read 90% of Fabric.js docs, examples, tutorials, questions here on Stack Overflow, but I didn't find a solution for my issue.
I am not sure that using css to limit canvas is a good practice.
I am not sure that my way of getting back changed image in big dimension is a good way.
Does anybody know better way to export image in good dimension?
Does anybody know if issue with scaling/rotating image after zoom (+limited by css) is a bug in Fabric.js?
Thank you for any answer!
I've showed a dicom image successfully with vtkImageviewer. Then I realized that vtkImageviewer2 would be more suitable, as I needed interactors and load images with slices, maybe 3d, etc
So I changed to vtkImageviewer2. Then I just see a white image. All white.
But my surprise was that, adding the render window interactor, when I press r... the image appears! So I looked into the class code. I saw the reset event and how it sets color window and color level. I've tried doing this, with poor results.
Why do I have to reset the window/level to see the image? I can do zoom, and rotate... around the white plane.
I did a widget->Update() or a imageViewer->Render() with the same result.
The Window Width/Level value is not computed initially, the default values are W255/L127.
It is necessary to set appropriate values. i.e. from Dicom Header Information or compute them by yourself.
myVtkImageViewer2->SetColorWindow(myWidthValue);
myVtkImageViewer2->SetColorLevel(myLevelValue);
Setup window/level values from your vtkImageActor:
vtkImageActor->GetProperty()->SetColorWindow(20);
vtkImageActor->GetProperty()->SetColorLevel(10);
ive used an online srpite service http://spritegen.website-performance.org/ but i want to know how to make them by myself.
How can i save an image that it should be so small but when used on my web site it comes out normal size?
Sprites aren't about making the image itself small, it's about decreasing filesize by packing several images into one.
Take a look at Yahoo's icon sprite. Notice that they have all their section icons stacked vertically in one large image. They then use CSS to position the background to only show a small window of the sprite image, thus giving you just the icon.
In the end, it's up to you how you arrange your sprite. Check out the bottom of Amazon's sprite.
Either way, hopefully that helps gives you a better idea of the concept of sprites.
From the very site you link:
CSS sprites are a way to reduce the
number of HTTP requests made for image
resources referenced by your site.
Images are combined into one larger
image at defined X and Y coorindates.
Having assigned this generated image
to relevant page elements the
background-position CSS property can
then be used to shift the visible area
to the required component image.
So there is nothing magical involved: you simply need to pack all your pictures into a single giant image with your favourite graphics tool and insert them as CSS background. Just look at this CSS sprite by Google: