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在 App Inventor 2 中使用图像 · App Inventor 2 中文网
...ts are supported, most users will get the best results using JPG (JPEG) or PNG images. The PNG images will generally look sharper than JPG on Android devices, due to the difference in compression algorithms although the file sizes tend to be larger that JPG. (PNG uses lossless compression; JPG doe...
How to check if a file exists in Documents folder?
...cuments"];
NSString* imageName = [NSString stringWithFormat:@"image-%@.png", i];
NSString* currentFile = [documentsDirectory stringByAppendingPathComponent:imageName];
BOOL fileExists = [fileMgr fileExistsAtPath:currentFile];
if (fileExists == NO){
cout << "DOESNT Exist...
Stretch and scale a CSS image in the background - with CSS only
...is to put the background image in the css (ie by background : url("example.png");) and then use the css attribute background-size:100%; beneath it to hopefully scale the image to screen width. This will not work, Will it? If you wish to put a background image for the body then an image attribute sho...
How do you change the size of figures drawn with matplotlib?
... matplotlib.pyplot.gcf()
fig.set_size_inches(18.5, 10.5)
fig.savefig('test2png.png', dpi=100)
To propagate the size change to an existing gui window add forward=True
fig.set_size_inches(18.5, 10.5, forward=True)
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How to have favicon / icon set when bookmarklet dragged to toolbar?
...DT><A HREF="http://mail.google.com/mail/u/0/#inbox" ICON="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAABV0lEQVQ4jdWQzUoCYRiFnxl/0plso0IKX7mqXWCLIlq0qEW4d19Qi6BLCELwEgpvQbyAVrroCrSNUJFGAyrkEEEMNs5PCxtRHGsZneX7nedwzgd/LQngObfnykIQOj9Disd/BFxdZ3hVwtE0Mje3kuw9OJqGWSji1BtzYa...
Change the image source on rollover using jQuery
...mg.swap').hover(function () {
this.src = '/images/signup_big_hover.png';
}, function () {
this.src = '/images/signup_big.png';
});
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How to add screenshot to READMEs in github repository?
... then embed them using:
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css transform, jagged edges in chrome
...n; does not work. A jagged edge appears during animation for a transparent png file.
To solve it I used: outline: 1px solid transparent;
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UIButton Image + Text IOS
...lse];
[_button setBackgroundImage:[UIImage imageNamed:@"jquery-mobile-icon.png"] forState:UIControlStateNormal]; // SET the image name for your wishes
[_button setTitle:@"Button" forState:UIControlStateNormal];
[_button.titleLabel setFont:[UIFont systemFontOfSize:24.f]];
[_button setTitleColor:[UICo...
How to instantiate a File object in JavaScript?
... xhr = new XMLHttpRequest();
xhr.open('GET', 'http://jsfiddle.net/img/logo.png', true);
xhr.responseType = 'arraybuffer';
bb.append(this.response); // Note: not xhr.responseText
//at this point you have the equivalent of: new File()
var blob = bb.getBlob('image/png');
/* more setup code */
xhr.s...