How to make a surface with a transparent background in pygame
This should do it: image = pygame.Surface([640,480], pygame.SRCALPHA, 32) image = image.convert_alpha() Make sure that the color depth (32) stays explicitly set else this will not work.
transparency
Make UINavigationBar transparent
If anybody is wondering how to achieve this in iOS 7+, here’s a solution (iOS 6 compatible too) In Objective-C [self.navigationBar setBackgroundImage:[UIImage new] forBarMetrics:UIBarMetricsDefault]; self.navigationBar.shadowImage = [UIImage new]; self.navigationBar.translucent = YES; In swift 3 (iOS 10) self.navigationBar.setBackgroundImage(UIImage(), for: .default) self.navigationBar.shadowImage = UIImage() self.navigationBar.isTranslucent = true In swift 2 self.navigationBar.setBackgroundImage(UIImage(), forBarMetrics: .Default) self.navigationBar.shadowImage = UIImage() self.navigationBar.translucent … Read more
Can PNG image transparency be preserved when using PHP’s GDlib imagecopyresampled?
imagealphablending( $targetImage, false ); imagesavealpha( $targetImage, true ); did it for me. Thanks ceejayoz. note, the target image needs the alpha settings, not the source image. Edit: full replacement code. See also answers below and their comments. This is not guaranteed to be be perfect in any way, but did achieve my needs at the … Read more
How can I produce an effect similar to the iOS 7 blur view?
Why bother replicating the effect? Just draw a UIToolbar behind your view. myView.backgroundColor = [UIColor clearColor]; UIToolbar* bgToolbar = [[UIToolbar alloc] initWithFrame:myView.frame]; bgToolbar.barStyle = UIBarStyleDefault; [myView.superview insertSubview:bgToolbar belowSubview:myView];
Transparent background image for Form – Smooth edge shape for the Form
You can use Layered Windows: Using a layered window can significantly improve performance and visual effects for a window that has a complex shape, animates its shape, or wishes to use alpha blending effects. The system automatically composes and repaints layered windows and the windows of underlying applications. As a result, layered windows are rendered … Read more
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
Understanding colors on Android (six characters)
Android uses hexadecimal ARGB values, which are formatted as #AARRGGBB. That first pair of letters, the AA, represent the alpha channel. You must convert your decimal opacity values to a hexadecimal value. Here are the steps: Alpha Hex Value Process Take your opacity as a decimal value and multiply it by 255. So, if you … Read more
Copying From and To Clipboard loses image transparency
The Windows clipboard, by default, does not support transparency, but you can put content on the clipboard in many types together to make sure most applications find some type in it that they can use. Sadly, the most common type, DeviceIndependentBitmap (which Windows itself seems to use) is a really dirty and unreliable one. I … Read more
Transparent hollow or cut out circle
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 to convert the background color of image to match the color of Pygame window?
You don’t need to change the background color of the image to the background color of the window, but make the background of the image transparent. Set the transparent colorkey by pygame.Surface.set_colorkey: Set the current color key for the Surface. When blitting this Surface onto a destination, any pixels that have the same color as … Read more