objective-c - 使用 NSScrollView 在新的 NSWindow 中没有滚动或用户交互

Question

我正在构建一个“存在于”NSStatusBar 中的应用程序(没有界面构建器!)；当您单击 StatusBar 中的图标时，会出现带有 NSScrollView 的 NSWindow。窗口出现，但似乎有什么东西阻止了用户与 ScrollView 的交互

为了找出问题出在哪里，我还在 AppDelegate 的主窗口 contentView 中添加了我的 View ，奇怪的是 ScrollView 在 MainWindow 中是交互式的......任何人都知道为什么它在我的新窗口中不起作用 window ？

这是我用来创建新的 TTDropDownWindow 的代码:

- (void)openWindow {
    // Dropdown
    if (self.dropDownWindow == nil) {
        self.dropDownWindow = [[TTDropDownWindow alloc] init];
        self.dropDownWindow.releasedWhenClosed = NO;
        self.dropDownWindow.contentView = self.view;
        self.dropDownWindow.backgroundColor = [NSColor clearColor];
        self.dropDownWindow.delegate = self;
        self.dropDownWindow.alphaValue = 1;
        self.dropDownWindow.hasShadow = NO;
        self.dropDownWindow.opaque = NO;
    }

    [[NSApplication sharedApplication] activateIgnoringOtherApps:YES];
    NSRect statusBarContentRect = self.statusBarItemView.window.frame;
    NSPoint statusBarOriginPoint = NSMakePoint(NSMidX(statusBarContentRect), NSMinY(statusBarContentRect));

    NSRect screenFrame = self.dropDownWindow.screen.frame;

    NSRect dropDownContentRect = NSZeroRect;
    dropDownContentRect.size.width = DROP_DOWN_WIDTH;
    dropDownContentRect.size.height = DROP_DOWN_HEIGHT;
    dropDownContentRect.origin.x = statusBarOriginPoint.x - DROP_DOWN_WIDTH / 2;
    dropDownContentRect.origin.y = screenFrame.size.height - DROP_DOWN_HEIGHT - NSStatusBar.systemStatusBar.thickness;

    [self.dropDownWindow setFrame:dropDownContentRect display:YES];
    [self.dropDownWindow makeKeyAndOrderFront:nil];
}

这是 TTDropDownWindow 的实现:

#import "TTDropDownWindow.h"
#import "WFConstants.h"

@implementation TTDropDownWindow

- (id) init
{
    self = [super initWithContentRect:NSMakeRect(0, 0, DROP_DOWN_WIDTH, DROP_DOWN_HEIGHT) styleMask:NSBorderlessWindowMask backing:NSBackingStoreRetained defer:NO];
    return self;
}

- (BOOL)canBecomeMainWindow {
    return YES;
}

- (BOOL)canBecomeKeyWindow {
    return YES;
}


@end

这是创建 View 和 ScrollView 的代码

#import "TTStatusBarDropDownView.h"
#import "TTTestView.h"

@implementation TTStatusBarDropDownView

@synthesize dropDownTableViewData = dropDownTableViewData_;


- (id)initWithFrame:(NSRect)frameRect {
    self = [super initWithFrame:frameRect];
    if (self) {
        NSImageView *imageView = [[NSImageView alloc] initWithFrame:frameRect];
        imageView.image = [NSImage imageNamed:@"background-dropdown"];
        [self addSubview:imageView];

        // first create a view to put in a ScrollView
        NSView *scrollViewHolder = [[TTTestView alloc] initWithFrame:NSMakeRect(19, 98, 414, 543) andColor:[NSColor yellowColor]];
        [self addSubview:scrollViewHolder];

        // create the scrollView
        NSScrollView *scrollView = [[NSScrollView alloc] initWithFrame:NSMakeRect(0, 0, 414, 543)];
        scrollView.hasVerticalRuler = YES;
        scrollView.hasVerticalScroller = YES;
        [scrollViewHolder addSubview:scrollView];

        // TTTestView is just a NSView with a background drawing
        TTTestView *theViewThatScrolls = [[TTTestView alloc] initWithFrame:NSMakeRect(0, 0, 200, 10000) andColor:[NSColor blueColor]];
        [theViewThatScrolls addSubview:[[TTTestView alloc] initWithFrame:NSMakeRect(10, 10, 100, 8000) andColor:[NSColor grayColor]]];

        [scrollView setDocumentView:theViewThatScrolls];
    }

    return self;
}

@end

Answer 1

您可以按照此处所述将 NSBackingStoreRetained 更改为 NSBackingStoreBuffered: NSScrollView in a NSWindow