JPEG image with transparency [closed]

Yes you can do this. The JPEG format makes provision for exchangeable image file format Color space definition Component sub-sampling registration Pixel aspect ratio definition JPEG/Exif is the most common for photography and JPEG/JFIF is the most commonly used for storage. When the others state JPEG format doesn’t provide for an alpha channel all they … Read more

How do you override the opacity of a parent control in WPF?

I was able to achieve something like this in pure xaml using a Brush to paint the main grids background. This way only parent grid will have its opacity set and its child elements won’t inherit it. <Grid x:Name=”LayoutRoot”> <Grid> <Grid.Background> <SolidColorBrush Color=”Black” Opacity=”0.5″/> </Grid.Background> <Grid.RowDefinitions> <RowDefinition Height=”0.333*”/> <RowDefinition Height=”0.333*”/> <RowDefinition Height=”0.333*”/> </Grid.RowDefinitions> <Grid.ColumnDefinitions> <ColumnDefinition … Read more

How to change a bitmap’s opacity?

As far as I know, opacity or other color filters can’t be set on the Bitmap itself. You will need to set the alpha when you use the image: If you’re using ImageView, there is ImageView.setAlpha(). If you’re using a Canvas, then you need to use Paint.setAlpha(): Paint paint = new Paint(); paint.setAlpha(100); canvas.drawBitmap(bitmap, src, … Read more

How to make a div’s background color translucent?

You can use the background-color: rgba() notation: #theIdofYourElement, .classOfElements { background-color: #fff; background-color: rgba(255,255,255,0.5); } Edited to add the default background-color (for browsers that don’t understand the rgba() notation). Albeit I was under the impression that all but IE do understand it (but I could be wrong, and haven’t tested to be sure…). Edit with … Read more