获取NSView和NSImageView的宽度和高度

Question

我有一个NSView,NSView上有一个NSImageView

在NSView的源代码中

我写:

NSImage *image = [[[NSImage alloc] initWithContentsOfURL:url] autorelease];
NSImageView *newImageView = nil;
newImageView = [[NSImageView alloc] initWithFrame:[self bounds]];
[newImageView setImage:image];
[newImageView setAutoresizingMask:NSViewWidthSizable | NSViewHeightSizable];

有没有办法读取NSView和NSImageView的宽度和高度？

Answer 1

任何视图(NSView,NSImageView等)的大小是view.frame.size或view.bounds.size.在这两种情况下,它都是相同的NSSize结构.你可以写这样的代码:

NSSize size = newImageView.frame.size;
NSLog(@"size: %@", NSStringFromSize(size));
NSLog(@"size: %f x %f", size.width, size.height);

要更改它,您需要更新视图frame属性:

NSRect frame = view.frame;
frame.size = NSMakeSize(<#new width#>, <#new height#>);
view.frame = frame;