I would like to implement undo/redo in a small paint application. It seems the Command Pattern fits the use nicely, but I am unsure how to best implement it. As I understand the pattern, it is nec...

Paint Pixels to Screen via Linux FrameBuffer Asked 14 years, 10 months ago Modified 6 years, 10 months ago Viewed 73k times

Aug 2, 2017 · 22 Meet "Tux" the pinguin. For the sake of this exercise I painted the letters "L" and "R" on his feet. For starters, let's paint Tux in the center of our canvas. If the canvas is size 500x500, and if …

Oct 11, 2015 · I would go with SVG, the files would be very small, you would simply draw them to SDL surfaces or textures at whatever size you need them to be. SDL doesn't support SVG natively, so …

Jan 10, 2017 · I would like to round the corner of image with 5px to show on imageview with Picasso. I have created simple class as ImageRoundCorners in which I am using simple method to round …

May 31, 2015 · 127.0.0.1 is the localhost address and will only be reachable from the raspi. In order to get access from your laptop open up the terminal on your raspi and try instead the ip from ifconfig …

Aug 18, 2009 · The void operator evaluates the given expression and then returns undefined. The void operator is often used merely to obtain the undefined primitive value, usually using “ void(0) ” (which …

I want to set the color as transparent. In RGB, 255 0 255 with alpha 5 may work as transparent, but how can I get it in hexadecimal? What is the hexadecimal code for a transparent color?

Jul 15, 2013 · paint.setShader(shader); int circleCenter = viewWidth / 2; // circleCenter is the x or y of the view's center // radius is the radius in pixels of the cirle to be drawn // paint contains the shader …

Mar 14, 2015 · I want to encrypt data in an image but the resulting ciphertext to still be a valid image. I encrypt the image with AES in python and then, I replace header in the files, but windows can't open the