mask-mode
Quick Summary for mask-mode
mask-mode CSS property sets whether the mask reference defined by mask-image is treated as a luminance or alpha mask.
Code Usage for mask-mode
/* Keyword values */ mask-mode: alpha; mask-mode: luminance; mask-mode: match-source; /* Multiple values */ mask-mode: alpha, match-source; /* Global values */ mask-mode: inherit; mask-mode: initial; mask-mode: revert; mask-mode: unset; More Details for mask-mode
mask-mode
The mask-mode CSS property sets whether the mask reference defined by mask-image is treated as a luminance or alpha mask.
/* Keyword values */ mask-mode: alpha; mask-mode: luminance; mask-mode: match-source; /* Multiple values */ mask-mode: alpha, match-source; /* Global values */ mask-mode: inherit; mask-mode: initial; mask-mode: revert; mask-mode: unset; Syntax
The mask-mode property is specified as one or more of the keyword values listed below, separated by commas.
Values
alpha This keyword indicates that the transparency (alpha channel) values of the mask layer image should be used as the mask values.
luminance This keyword indicates that the luminance values of the mask layer image should be used as the mask values.
match-source If the mask-image property is of type <mask-source>, the luminance values of the mask layer image should be used as the mask values.
If it is of type <image>, the alpha values of the mask layer image should be used as the mask values.
Formal definition
| Initial value | match-source |
|---|---|
| Applies to | all elements; In SVG, it applies to container elements excluding the defs element and all graphics elements |
| Inherited | no |
| Computed value | as specified |
| Animation type | discrete |
Formal syntax
<masking-mode>#where
<masking-mode> = alpha | luminance | match-source
Examples
Using alpha mask mode
Specifications
| Specification |
|---|
| CSS Masking Module Level 1 # the-mask-mode |
See also
Clipping and Masking in CSSLast modified: Aug 12, 2021, by MDN contributors
Select your preferred language English (US)Français日本語中文 (简体) Change languageAdd Comment
Other Items in CSS
Related Search Terms
Other Categories in CSS
Random Quote
"Olivia, my eldest daughter, caught measles when she was seven years old. As the illness took its usual course I can remember reading to her often in bed and not feeling particularly alarmed about it. Then one morning, when she was well on the road to recovery, I was sitting on her bed showing her how to fashion little animals out of coloured pipe-cleaners, and when it came to her turn to make one herself, I noticed that her fingers and her mind were not working together and she couldn’t do anything. 'Are you feeling all right?' I asked her. 'I feel all sleepy,' she said. In an hour, she was unconscious. In twelve hours she was dead. The measles had turned into a terrible thing called measles encephalitis and there was nothing the doctors could do to save her. That was...in 1962, but even now, if a child with measles happens to develop the same deadly reaction from measles as Olivia did, there would still be nothing the doctors could do to help her. On the other hand, there is today something that parents can do to make sure that this sort of tragedy does not happen to a child of theirs. They can insist that their child is immunised against measles. ...I dedicated two of my books to Olivia, the first was ‘James and the Giant Peach’. That was when she was still alive. The second was ‘The BFG’, dedicated to her memory after she had died from measles. You will see her name at the beginning of each of these books. And I know how happy she would be if only she could know that her death had helped to save a good deal of illness and death among other children."
I just checked google books for BFG, and the dedication is there.
https://www.google.com.au/books/edition/_/quybcXrFhCIC?hl=en&gbpv=1
Roald Dahl, 1986
