frame | 易学教程

Objective-C check if subviews of rotated UIViews intersect?

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问题 I don't know where to start with this one. Obviously CGRectIntersectsRect will not work in this case, and you'll see why. I have a subclass of UIView that has a UIImageView inside it that is placed in the exact center of the UIView: I then rotate the custom UIView to maintain the frame of the inner UIImageView while still being able to perform a CGAffineRotation. The resulting frame looks something like this: I need to prevent users from making these UIImageViews intersect, but I have no idea

android capture video frame

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I need to get a frame of a video file (it may be on sdcard, cache dir or app dir). I have package android.media in my application and inside I have class MediaMetadataRetriever. To get first frame into a bitmap, I use code: public static Bitmap getVideoFrame(Context context, Uri videoUri) { MediaMetadataRetriever retriever = new MediaMetadataRetriever(); try { retriever.setMode(MediaMetadataRetriever.MODE_CAPTURE_FRAME_ONLY); retriever.setDataSource(context, videoUri); return retriever.captureFrame(); } catch (IllegalArgumentException ex) { throw new RuntimeException(); } catch

ios10: viewDidLoad frame width/height not initialized correctly

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问题 Since upgrading to XCode8 GM and ios10, all of my views created via Interface Builder are not being initialized correctly until much much later than expected. This means in viewDidLoad, cellForRowAtIndexPath, viewWillAppear, etc, the frame size is set to {1000,1000} for every view. At some point they seem to correct, but its far too late. The first problem encountered is with common rounding of corners failing across the board: view.layer.cornerRadius = view.frame.size.width/2 Further

How to navigate a subframe inside a frameset using Selenium WebDriver?

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I need to get the result from the table "td". But before I can do that I need to navigate a frame that contains it. The frame is one of the frameset elements that belongs to the mainFrame. I tried to use all types of navigating the "child" subframe non of which works: driver.switchTo().defaultContent(); Thread.sleep(1000); driver.switchTo().frame("mainFrame.0.fr_resultsNav~ResultsMaxGroupTemplate0.9766101221774707"); driver.switchTo().frame("main.Frame.1.fr_resultsNav~ResultsMaxGroupTemplate0.8811790466176727"); // even: driver.switchTo().frame("mainFrame.0.fs_main"); The following is the

android capture video frame

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问题 I need to get a frame of a video file (it may be on sdcard, cache dir or app dir). I have package android.media in my application and inside I have class MediaMetadataRetriever. To get first frame into a bitmap, I use code: public static Bitmap getVideoFrame(Context context, Uri videoUri) { MediaMetadataRetriever retriever = new MediaMetadataRetriever(); try { retriever.setMode(MediaMetadataRetriever.MODE_CAPTURE_FRAME_ONLY); retriever.setDataSource(context, videoUri); return retriever

“Incorrect” frame / window size after re-orientation in iPhone

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In my iPhone OS application I want (need) to watch for changes in the device orientation in order to rearrange certain portions of the screen. The approach I used was to use CGRect frame = [UIScreen mainScreen].applicationFrame to get the screen size, and from there calculate the size and / or positioning of other controls (I also tried self.view.frame ). All testing was done so far in Portrait mode, so I could focus on programming the main features and later on just do some adjustments for Landscape. And here enters the problem: In -(void) didRotateFromInterfaceOrientation:

How could I get a Frame with a scrollbar in Tkinter?

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问题 I'd like to have a Frame , where the user could add as many textfields as needed by the application. The application starts with a textfield, and a button below that textfield. When the user presses the button, a new text entry will be added below the first one ( this may be repeated countless times ). In the middle of the window, there will be a Text widget, used to display text :) However, I noticed this in the documentation: This widget is used to implement scrolled listboxes, canvases,

How does clipsToBounds work?

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I would like to know how to use the UIView property clipsToBounds . The official documentation says the following: clipsToBounds property A Boolean value that determines whether subviews are confined to the bounds of the view. Discussion Setting this value to YES causes subviews to be clipped to the bounds of the receiver. If set to NO , subviews whose frames extend beyond the visible bounds of the receiver are not clipped. The default value is NO . But I'm unclear on what this means exactly. How should I be using clipsToBounds ? What are the consequences of setting this property to YES

How to extract frames of an animated GIF with PHP

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问题 I search for a long time how to extract frames from an animated GIF with PHP... unfortunaly I just found how to get their duration... I really need to extract the GIF frames and their duration to apply some resize, rotate, etc, on each and then to regenerate the GIF with edited frames ! I don't want to use any software, external library (like ImageMagick), just PHP: in fact I need to allow my class http://phpimageworkshop.com/ to work with animated GIF. If you have any idea, I'm listening you

Custom MKAnnotation callout bubble with button

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I'm developing app, where user is localized by gps and then he is asked, whether he is located in specific place. To confirm this, callout bubble is presented to him straight away, asking him, if he is at specific place. As there is alot of similar questions, I was able to do custom callout bubble: My problem: button is not "clickable" My guess: because this custom callout is higher than standard callout bubble, I had to place it in negative "frame", therefore button cannot be clicked. Here is my didSelectAnnotationView method - (void)mapView:(MKMapView *)mapView didSelectAnnotationView: