SUMMARY: Depending on what is needed it can be tricky but the basic approach is pretty straight forward. This approach is a little different from my first thought… but this has the same result. I made a black/transparent pattern for the circle and set it to :before. The circle is then transformed rotate(180deg) and moved … Read more
Does it have to be dynamic? The only way to do that is with an image with transparency (GIF or, better, PNG). I’m not sure if this is what you want, but will explain it anyway. Situation: you have a non plain background that you want to bee seen through your text. Solution: no CSS … Read more
Either use a semi-transparent PNG or SVG image or use CSS: background-color: rgba(255, 0, 0, 0.5); Here’s an article from css3.info, Opacity, RGBA and compromise (2007-06-03). Beware that the text still needs sufficient contrast with the background, once the underlying background shines through. <p style=”background-color: rgba(255, 0, 0, 0.5);”> <span>Hello, World!</span> </p>
Don’t use opacity for this, set the background to an RGBA-value instead to only make the background semi-transparent. In your case it would be like this. .content { padding:20px; width:710px; position:relative; background: rgb(204, 204, 204); /* Fallback for older browsers without RGBA-support */ background: rgba(204, 204, 204, 0.5); } See http://css-tricks.com/rgba-browser-support/ for more info and … Read more
Create a class that inherits from Panel. Set the ControlStyle.Opaque for control in constructor using SetStyle. If true, the control is drawn opaque and the background is not painted. Override CreateParams and set WS_EX_TRANSPARENT style for it. Specifies that a window created with this style is to be transparent. That is, any windows that are … Read more
Just add this code to your image css body{ background: /* top, transparent black, faked with gradient */ linear-gradient( rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7) ), /* bottom, image */ url(https://images.unsplash.com/photo-1614030424754-24d0eebd46b2); } Reference: linear-gradient() – CSS | MDN UPDATE: Not all browsers support RGBa, so you should have a ‘fallback color’. This color … Read more
The opacity of the child will always be the opacity of the parent if the opacity of the child is 1. This is not a problem with inheritance, but rather with the way opacity is calculated. For instance, <div id=”parent”> <div></div> </div> <div id=”original”> </div> <div id=”quarter”> </div> #parent div, #quarter { width: 100px; height: … Read more
I just needed to do this, but thought Steven’s solution would be slow. This should hopefully use graphics HW. Create a category on UIImage: – (UIImage *)imageByApplyingAlpha:(CGFloat) alpha { UIGraphicsBeginImageContextWithOptions(self.size, NO, 0.0f); CGContextRef ctx = UIGraphicsGetCurrentContext(); CGRect area = CGRectMake(0, 0, self.size.width, self.size.height); CGContextScaleCTM(ctx, 1, -1); CGContextTranslateCTM(ctx, 0, -area.size.height); CGContextSetBlendMode(ctx, kCGBlendModeMultiply); CGContextSetAlpha(ctx, alpha); CGContextDrawImage(ctx, area, … Read more
One option is to use densCols() to extract kernel densities at each point. Mapping those densities to the desired color ramp, and plotting points in order of increasing local density gets you a plot much like those in the linked article. ## Data in a data.frame x1 <- rnorm(n=1E3, sd=2) x2 <- x1*1.2 + rnorm(n=1E3, … Read more
Resize the image to fit the div size. With CSS3 you can do this: /* with CSS 3 */ #yourdiv { background: url(‘bgimage.jpg’) no-repeat; background-size: 100%; } How Do you Stretch a Background Image in a Web Page: About opacity #yourdiv { opacity: 0.4; filter: alpha(opacity=40); /* For IE8 and earlier */ } Or look … Read more