objective-c - NSControl 在全屏模式下附加到 NSView 的 NSView 上闪烁

Question

设置:

1. 我的应用程序具有使用 enterFullScreenMode:withOptions: 设置为全屏模式的背景 View 。
2. 对于这些背景 View ，我使用removeFromSuperview 和addSubview: 将内容 View 作为 subview 移动。
3. 此外，还有一个首选项 View ，我将其添加到内容 View ，如前所述。
   preferences view 来自 XIB，包含 NSControls，例如复选框、圆形幻灯片、组合框……

整个设置要复杂得多，因此很难在此处发布代码。不过，如果您需要，我会添加一些部分。

问题:
当我选择首选项 View 上的任何控件时，元素会闪烁。这意味着例如复选框会消失并重新出现。我已经尝试解决在 View 的 viewDidMoveToSuperview 方法中运行 setNeedsDisplay:、setNeedsLayout 或 makeKeyAndOrderFront: 的问题.虽然，没有任何帮助。我能做什么？

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编辑 1:我拿了screen capture的应用程序，以便您可以看到发生了什么。

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编辑 2:
这是 PreferencesViewController.h:

//  PreferencesViewController.h

#import <Cocoa/Cocoa.h>
#import "SlideShowModelProtocol.h"
#import "DisplayInfoController.h"

@interface PreferencesViewController : NSViewController {
    id<SlideShowModelProtocol> m_localModel;
    DisplayInfoController* m_displayInfoController;
}

@property (readonly) id<SlideShowModelProtocol> localModel;
@property (readwrite, assign) IBOutlet DisplayInfoController* displayInfoController;

- (void)moveViewToSuperview:(NSView*)superview;
- (void)showOnView:(NSView*)superview;
- (void)removeViewFromSuperview;
- (BOOL)viewHasSuperview;
- (void)updateModelSettings;
- (IBAction)cancelView:(id)sender;
- (IBAction)confirmView:(id)sender;

@end

...和实现PreferencesViewController.m:

//  PreferencesViewController.m

#import "PreferencesViewController.h"
#import "ApplicationController.h"
#import "DisplayInfo.h"


@interface PreferencesViewController()

- (void)centerViewOnSuperview;
- (void)loadModel;

@end

@implementation PreferencesViewController


- (id)init {
    self = [super initWithNibName:@"PreferencesView" bundle:nil];
    if (self != nil) {
        m_localModel = nil;
        m_displayInfoController = nil; // Assigned in Interface Builder.
    }
    return self;
}

@synthesize localModel = m_localModel;
@synthesize displayInfoController = m_displayInfoController;

- (void)loadModel {
    [self willChangeValueForKey:@"localModel"];
    // Retrieve deep copy of the model.
    m_localModel = [[[ApplicationController sharedController] model] copyWithZone:nil];
    // Reset the table view selection as saved in the model.
    NSIndexSet* selectionIndices = [NSIndexSet indexSetWithIndex:[[m_localModel selectedScreenIndex] unsignedIntegerValue]];
    [[m_displayInfoController displayInfoTableView] selectRowIndexes:selectionIndices byExtendingSelection:NO];
    [self didChangeValueForKey:@"localModel"];
}

/**
    Moves and positions the view on the given superview (aka another screen).
    @param superview A superview.
 */
- (void)showOnView:(NSView*)superview {
    [self moveViewToSuperview:superview];
    [self centerViewOnSuperview];
}

/**
    Moves the view on the given superview.
    @param superview A superview (In full screen mode a background view).
 */
- (void)moveViewToSuperview:(NSView*)superview {
    if ([[self view] superview] == superview) {
        return;
    }
    [self loadModel];
    [[self view] removeFromSuperview];
    [superview addSubview:[self view]];
}

- (void)removeViewFromSuperview {
    [[self view] removeFromSuperview];
}


- (void)centerViewOnSuperview {
    NSRect superviewFrame = self.view.superview.frame;
    NSRect viewFrame = self.view.frame;
    float viewFrameWidth = viewFrame.size.width;
    float viewFrameHeight = viewFrame.size.height;
    float xPos = 0.5f * superviewFrame.size.width - 0.5f * viewFrameWidth;
    float yPos = 0.5f * superviewFrame.size.height - 0.5f * viewFrameHeight;
    NSRect frame = NSMakeRect(xPos, yPos, viewFrameWidth, viewFrameHeight);
    [self.view setFrame:frame];
}

- (BOOL)viewHasSuperview {
    return [[self view] superview] != nil;
}

- (void)updateModelSettings {
    id<SlideShowModelProtocol> globalModel = [[ApplicationController sharedController] model];
    [globalModel setFadeDuration:[m_localModel fadeDuration]];
    [globalModel setStayDuration:[m_localModel stayDuration]];
    [globalModel setStartWithFirst:[m_localModel startWithFirst]];
    [globalModel setSortingMode:[m_localModel sortingMode]];
    [globalModel setAnimationIsActive:[m_localModel animationIsActive]];
    [globalModel setSelectedScreenIndex:[m_localModel selectedScreenIndex]];
    [globalModel setPanAmount:[m_localModel panAmount]];
    [globalModel setZoomAmount:[m_localModel zoomAmount]];
    [globalModel setZoomFactor:[m_localModel zoomFactor]];
}

#pragma mark -
#pragma mark UserInterface

- (IBAction)cancelView:(id)sender {
    [[ApplicationController sharedController] hidePreferencesViewModelSettingsUpdated:NO];
}

- (IBAction)confirmView:(id)sender {
    ApplicationController* applicationController = [ApplicationController sharedController];
    if ([[applicationController model] isEqualToModel:m_localModel]) {
        [self cancelView:sender];
        return;
    }
    [self updateModelSettings];
    [applicationController hidePreferencesViewModelSettingsUpdated:YES];
}

@end

Answer 1

正如我在帖子的评论中所述，我创建了一个新的 PreferencesViewTest.xib 并逐步添加了 GUI 控件。我还添加了绑定(bind)、 Controller 等。一切正常 - 没有闪烁。然后，我将 RETURN 指定为 Interface Builder 中 OK 按钮的等效键。我再次启动应用程序以检查行为......它闪烁!我通过从 OK 按钮中删除 key equivalent 来仔细检查以前的 PreferencesView.xib 的现象......它不会闪烁! - 疯狂的狗屎。但是为什么..？