Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>Another way to tint an image is to simply multiply it by a constant color. Sometimes, this is preferable because it doesn't "lift" the color values in black areas; it keeps the relative intensities in the image the same. Using an overlay as a tint tends to flatten out the contrast.</p> <p>This is the code I use:</p> <pre><code>UIImage *MultiplyImageByConstantColor( UIImage *image, UIColor *color ) { CGSize backgroundSize = image.size; UIGraphicsBeginImageContext(backgroundSize); CGContextRef ctx = UIGraphicsGetCurrentContext(); CGRect backgroundRect; backgroundRect.size = backgroundSize; backgroundRect.origin.x = 0; backgroundRect.origin.y = 0; CGFloat r,g,b,a; [color getRed:&amp;r green:&amp;g blue:&amp;b alpha:&amp;a]; CGContextSetRGBFillColor(ctx, r, g, b, a); CGContextFillRect(ctx, backgroundRect); CGRect imageRect; imageRect.size = image.size; imageRect.origin.x = (backgroundSize.width - image.size.width)/2; imageRect.origin.y = (backgroundSize.height - image.size.height)/2; // Unflip the image CGContextTranslateCTM(ctx, 0, backgroundSize.height); CGContextScaleCTM(ctx, 1.0, -1.0); CGContextSetBlendMode(ctx, kCGBlendModeMultiply); CGContextDrawImage(ctx, imageRect, image.CGImage); UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return newImage; } </code></pre> <p><strong>Swift version</strong> </p> <pre><code>extension UIImage{ static func multiplyImageByConstantColor(image:UIImage,color:UIColor)-&gt;UIImage{ let backgroundSize = image.size UIGraphicsBeginImageContext(backgroundSize) let ctx = UIGraphicsGetCurrentContext() var backgroundRect=CGRect() backgroundRect.size = backgroundSize backgroundRect.origin.x = 0 backgroundRect.origin.y = 0 var r:CGFloat var g:CGFloat var b:CGFloat var a:CGFloat color.getRed(&amp;r, green: &amp;g, blue: &amp;b, alpha: &amp;a) CGContextSetRGBFillColor(ctx, r, g, b, a) CGContextFillRect(ctx, backgroundRect) var imageRect=CGRect() imageRect.size = image.size imageRect.origin.x = (backgroundSize.width - image.size.width)/2 imageRect.origin.y = (backgroundSize.height - image.size.height)/2 // Unflip the image CGContextTranslateCTM(ctx, 0, backgroundSize.height) CGContextScaleCTM(ctx, 1.0, -1.0) CGContextSetBlendMode(ctx, .Multiply) CGContextDrawImage(ctx, imageRect, image.CGImage) let newImage = UIGraphicsGetImageFromCurrentImageContext() UIGraphicsEndImageContext() return newImage } } </code></pre>
    singulars
    1. This table or related slice is empty.
    1. POChanging UIImage color
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USmeaning-matters
    1. USAnna Dickinson
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload