filter: opacity() is similar to the more established opacity property; the difference is that with filter: opacity(), some browsers provide hardware acceleration for better performance. Negative values are not allowed. filter: opacity() applies transparency. A value of 0% is completely transparent. A value of 100% leaves the input unchanged. Values between 0% and 100% are … Read more
Yes you can do this. The JPEG format makes provision for exchangeable image file format Color space definition Component sub-sampling registration Pixel aspect ratio definition JPEG/Exif is the most common for photography and JPEG/JFIF is the most commonly used for storage. When the others state JPEG format doesn’t provide for an alpha channel all they … Read more
have you glEnable’d alpha blending? And have you set up your blend parameters? You can’t just set the alpha you need to setup various other parameters in OpenGL. glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); glEnable( GL_BLEND );
I was able to achieve something like this in pure xaml using a Brush to paint the main grids background. This way only parent grid will have its opacity set and its child elements won’t inherit it. <Grid x:Name=”LayoutRoot”> <Grid> <Grid.Background> <SolidColorBrush Color=”Black” Opacity=”0.5″/> </Grid.Background> <Grid.RowDefinitions> <RowDefinition Height=”0.333*”/> <RowDefinition Height=”0.333*”/> <RowDefinition Height=”0.333*”/> </Grid.RowDefinitions> <Grid.ColumnDefinitions> <ColumnDefinition … Read more
Solved! Through ongoing research, scouring forums and source code repositories, I peiced together the necessary steps to accomplish this using only libwebkit and a standard compiz desktop (any Xorg desktop with compositing should do). For a current libwebkit (1.1.10-SVN), there is an Ubuntu PPA: deb http://ppa.launchpad.net/webkit-team/ppa/ubuntu jaunty main deb-src http://ppa.launchpad.net/webkit-team/ppa/ubuntu jaunty main As far as … Read more
Yes, interesting question. You can get this scatterplot with Shapely. Here is the code : import matplotlib.pyplot as plt import matplotlib.patches as ptc import numpy as np from shapely.geometry import Point from shapely.ops import cascaded_union n = 100 size = 0.02 alpha = 0.5 def points(): x = np.random.uniform(size=n) y = np.random.uniform(size=n) return x, y … Read more
N.B. There is a clipping bug in this code, which is fixed in the accepted answer to paintComponent() is drawing on other components. This should only be considered as a solution if the ‘clipping bug fix’ is incorporated. // Paint the BG color of the parent, everywhere outside the clip // of the text bubble. … Read more
Don’t forget to add an event listener to the image’s load event. Image loading is something that happens in the background, so when the JavaScript interpreter gets to the canvas.drawImage part it is most likely the image probably will not have loaded yet and is just an empty image object, without content. drawing = new … Read more
Like this? Live Demo Relevant CSS: #container:hover .inner { opacity: 0.8 } HTML: <div id=”container”> <div id=”left” class=”inner”></div> <div id=”right” class=”inner”></div> </div> Irrelevant CSS: #container { width: 300px; padding: 30px; overflow: hidden } .inner { width: 40%; height: 250px; background: #ccc } #left { float: left } #right { float: right } Truly Irrelevant CSS: … Read more