You can use transparent image to simulate the result. Use Pillow to create transparent image and then use canvas.create_image(…) to draw it. Below is a sample code: from tkinter import * from PIL import Image, ImageTk root = Tk() images = [] # to hold the newly created image def create_rectangle(x1, y1, x2, y2, **kwargs): … Read more
Set imagealphablending($image,true); on each new layer. Try this: <?php $image = imagecreatetruecolor(485, 500); imagealphablending($image, false); $col=imagecolorallocatealpha($image,255,255,255,127); imagefilledrectangle($image,0,0,485, 500,$col); imagealphablending($image,true); /* add door glass */ $img_doorGlass = imagecreatefrompng(“glass/$doorStyle/$doorGlass.png”); imagecopyresampled($image, $img_doorGlass, 106, 15, 0, 0, 185, 450, 185, 450); imagealphablending($image,true); /* add door */ $img_doorStyle = imagecreatefrompng(“door/$doorStyle/$doorStyle”.”_”.”$doorColor.png”); imagecopyresampled($image, $img_doorStyle, 106, 15, 0, 0, 185, 450, 185, 450); … Read more
Add a new class to your project and post the code shown below. Build. Drop the new control from the top of the toolbox onto your form. using System; using System.Windows.Forms; public class TransparentLabel : Label { public TransparentLabel() { this.SetStyle(ControlStyles.Opaque, true); this.SetStyle(ControlStyles.OptimizedDoubleBuffer, false); } protected override CreateParams CreateParams { get { CreateParams parms = … Read more
Basically, you need to make a transparent window and a translucent content pane. This will mean anything added to the content pane will continue to be rendered without additional alphering… public class TranscluentWindow { public static void main(String[] args) { new TranscluentWindow(); } public TranscluentWindow() { EventQueue.invokeLater(new Runnable() { @Override public void run() { try … Read more
You may use rgba(). div#foo { background: rgba(0, 0, 255, 0.3); } To make it work in old Internet Explorers use CSS PIE. There are some limitations, but those are handled in a backwards compatible way: the RGB value will be rendered correctly and the opacity will be ignored.
I like this Javascript solution writen by David Cilley some time ago. It gets out of the way of compliant browsers and can be used with any back-end you want. It does still require a blank gif image though. Add these functions to your HTML Header or other existing .js include: <script type=”text/javascript”> function fixPngs(){ … 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()
Use the matplotlib savefig function with the keyword argument transparent=True to save the image as a png file. In [30]: x = np.linspace(0,6,31) In [31]: y = np.exp(-0.5*x) * np.sin(x) In [32]: plot(x, y, ‘bo-‘) Out[32]: [<matplotlib.lines.Line2D at 0x3f29750>] In [33]: savefig(‘demo.png’, transparent=True) Result: Of course, that plot doesn’t demonstrate the transparency. Here’s a screenshot … Read more
Create the initial plot: library(ggplot2) d <- rnorm(100) df <- data.frame( x = 1, y = d, group = rep(c(“gr1”, “gr2”), 50) ) p <- ggplot(df) + stat_boxplot( aes( x = x, y = y, color = group ), fill = “transparent” # for the inside of the boxplot ) The fastest way to modify … Read more
Creating a top level form that is transparent is very easy. Just make it fill the screen, or required area, and define it to have a TransparenyKey color and BackColor of the same value. Getting it to ignore the mouse is simple enough, you just need to override the WndProc and tell the WM_HITTEST that … Read more