transparency
How can I set the opacity or transparency of a Panel in WinForms?
For whoever is still looking for a totally transparent panel, I found a nice solution in this blog by William Smash who in turn has taken it from Tobias Hertkorn on his T# blog. I thought its worth posting it as an answer here. C# code: public class TransparentPanel : Panel { protected override CreateParams … Read more
Only PNG supports transparency, is that true?
png-32 supports different levels of transparency. Each pixel can have an opacity between 0 and 255, with 0 as completely transparent. png-24 supports setting one color as fully transparent. Everything else will be opaque. gif uses a color palette. You can specify that one color in the palette is fully transparent. png-8 also uses a … Read more
ImageMagick extend canvas with transparent background
Use this instead: convert \ input.png \ -background none \ -gravity center \ -extent 100×100 \ output.png Note well: The order of the parameters is significant! (To convince yourself, just put -background none at the end of the parameters instead of the start…) Updated: Thanks to @jesmith who noticed that the commandline I originally provided … Read more
smallest filesize for transparent single pixel image
First of all, there is honestly no valid reason to use spacer GIFs in 2020 and beyond (unless you’re working with retro style websites), so this post is mostly just for the curious. Anyway let’s begin: The smallest valid transparent GIF is 35 bytes. data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEAAAAALAAAAAABAAEAAAIBAAA= 47 49 46 38 39 61 01 00 01 00 … Read more
Transparent hollow or cut out shape in HTML
You can achieve a transparent cut out circle with 2 different techniques : 1.SVG The following examples use an inline svg. The first snippet uses the mask element to cut out the transparent circle and the second hollow circle is made with a path element. The circle is made with 2 arc commands : With … Read more
How do I make a transparent border with CSS so that contents don’t shift position? [duplicate]
You can use “transparent” as a colour. In some versions of IE, that comes up as black, but I’ve not tested it out since the IE6 days. http://www.researchkitchen.de/blog/archives/css-bordercolor-transparent.php
How can I make an image transparent on Android?
Try this: ImageView myImage = (ImageView) findViewById(R.id.myImage); myImage.setAlpha(127); //value: [0-255]. Where 0 is fully transparent and 255 is fully opaque. Note: setAlpha(int) is deprecated in favor of setAlpha(float) where 0 is fully transparent and 1 is fully opaque. Use it like: myImage.setAlpha(0.5f)
How to find the alpha channel transparency value of a pixel in a png image? [closed]
In Photoshop’s Info panel, you can choose ‘Opacity’ as a readout mode, though it will show up as a percentage and not as a real alpha value. To enable it, simply open the Info window, choose Panel Options and then set the Second Color Readout mode to Opacity.
WPF Window with transparent background containing opaque controls [duplicate]
Instead of setting the opacity of the window, set its background’s opacity: <Window x:Class=”WpfApplication3.MainWindow” xmlns=”http://schemas.microsoft.com/winfx/2006/xaml/presentation” xmlns:x=”http://schemas.microsoft.com/winfx/2006/xaml” Title=”MainWindow” Height=”350″ Width=”525″ AllowsTransparency=”True” WindowStyle=”None”> <Window.Background> <SolidColorBrush Opacity=”0.5″ Color=”White”/> </Window.Background> <Grid> <Button Width=”200″ Height=”50″>button</Button> </Grid> </Window>