Assuming you reference the class library from the WPF application you can reference and display the image in the WPF application with the following XAML: <Image Source=”/ClassLibraryName;Component/images/myimage.png”/> The important thing here is “ClassLibraryName” which is the assembly name for your class library. “/images/myimage.png” is the path to your image. You can find out more about … Read more
Edit: Version 1.5.0 (July 2017) of the Extensions to the PNG 1.2 Specification has finally added an EXIF chunk. It remains to be seen if encoders-decoders begin to support it. Original: PNG does not embed EXIF info. It allows, however, to embed metadata “chunks” inside the image. Some of the standardized chunks correspond to a … Read more
Disclaimer: I’m the author of RealFaviconGenerator, which I expect to be up-to-date (mostly, see below). So don’t be surprised if this answer matches what RFG generates. The one-size-fits-all myth There is no “one size fits all” icon. You can’t create a single SVG icon and expect it to work everywhere. From a technical point of … Read more
-background white -alpha remove -alpha off Example: convert image.png -background white -alpha remove -alpha off white.png Feel free to replace white with any other color you want. Imagemagick documentation says this about the -alpha remove operation: This operation is simple and fast, and does the job without needing any extra memory use, or other side … Read more
I have had success doing it like this in the past: $thumb = imagecreatetruecolor($newwidth, $newheight); imagealphablending($thumb, false); imagesavealpha($thumb, true); $source = imagecreatefrompng($fileName); imagealphablending($source, true); imagecopyresampled($thumb, $source, 0, 0, 0, 0, $newwidth, $newheight, $width, $height); imagepng($thumb,$newFilename); I found the output image quality much better using imagecopyresampled() than imagecopyresized()
Apple may have updated the interface guidelines since this question was asked, but transparency is now expressly not allowed. See more here: https://developer.apple.com/ios/human-interface-guidelines/icons-and-images/app-icon/
Load the file with pydot.graph_from_dot_file to get a pydot.Dot class instance. Then write it to a PNG file with the write_png method. import pydot (graph,) = pydot.graph_from_dot_file(‘somefile.dot’) graph.write_png(‘somefile.png’)
From what I can tell, you need to set the blending mode to false, and the save alpha channel flag to true before you do the imagecolorallocatealpha() <?php /** * https://stackoverflow.com/a/279310/470749 * * @param resource $image * @param int $newWidth * @param int $newHeight * @return resource */ public function getImageResized($image, int $newWidth, int $newHeight) … Read more