Question

我在一个班级中有一个NSTableView。我在TrackingArea类中实现了mouseEntered，mouseExited，drawBackgroundInRect，drawSelectionInRect，HoverTableCellView，这是NSTableRowView的子类。

在xib文件中，我已经NSView并在身份检查器的类字段中将其重命名为HoverTableCellView，并将其放在NSTableView的第一行。当我把鼠标放在它上面时，单独的第一行工作正常。我的整个表格不像第一行那样。

      - (void)setMouseInside:(BOOL)value {
if (mouseInside != value) {
    mouseInside = value;
    [self setNeedsDisplay:YES];
}
}

 - (BOOL)mouseInside {
return mouseInside;
 }

  - (void)ensureTrackingArea {
if (trackingArea == nil) {
   trackingArea = [[NSTrackingArea alloc] initWithRect:NSZeroRect    options:NSTrackingInVisibleRect | NSTrackingActiveAlways | NSTrackingMouseEnteredAndExited owner:self userInfo:nil];
}

}

 - (void)updateTrackingAreas {
[super updateTrackingAreas];
[self ensureTrackingArea];
if (![[self trackingAreas] containsObject:trackingArea]) {
    [self addTrackingArea:trackingArea];
}
}

  - (void)mouseEntered:(NSEvent *)theEvent {
self.mouseInside = YES;
 }

 - (void)mouseExited:(NSEvent *)theEvent {
  self.mouseInside = NO;
  }

  static NSGradient *gradientWithTargetColor(NSColor *targetColor) {
  NSArray *colors = [NSArray arrayWithObjects:[targetColor colorWithAlphaComponent:0], targetColor, targetColor, [targetColor colorWithAlphaComponent:0], nil];
   const CGFloat locations[4] = { 0.0, 0.35, 0.65, 1.0 };
    return [[NSGradient alloc] initWithColors:colors atLocations:locations colorSpace:    [NSColorSpace sRGBColorSpace]];
   }

   - (void)drawBackgroundInRect:(NSRect)dirtyRect {
// Custom background drawing. We don't call super at all.
[self.backgroundColor set];
// Fill with the background color first
NSRectFill(self.bounds);

// Draw a white/alpha gradient
if (self.mouseInside) {
    NSGradient *gradient = gradientWithTargetColor([NSColor whiteColor]);
    [gradient drawInRect:self.bounds angle:0];
}
 }

//仅在'selected'属性为yes时调用。 - （void）drawSelectionInRect：（NSRect）dirtyRect {

   // Check the selectionHighlightStyle, in case it was set to None
    if (self.selectionHighlightStyle != NSTableViewSelectionHighlightStyleNone) {

   // We want a hard-crisp stroke, and stroking 1 pixel will border half on one side            and      half on another, so we offset by the 0.5 to handle this
      NSRect selectionRect = NSInsetRect(self.bounds, 5.5, 5.5);
      [[NSColor colorWithCalibratedWhite:.72 alpha:1.0] setStroke];
      [[NSColor colorWithCalibratedWhite:.82 alpha:1.0] setFill];
       NSBezierPath *selectionPath = [NSBezierPath bezierPathWithRoundedRect:selectionRect   xRadius:10 yRadius:10];
    //[selectionPath fill];
      [selectionPath stroke];
      NSLog(@"asasasa");
    }
    }

 - (NSBackgroundStyle)interiorBackgroundStyle {
  return NSBackgroundStyleLight;
  }

  - (void)setFrame:(NSRect)frameRect {
  [super setFrame:frameRect];
  if ([self inLiveResize]) {
    if (self.selected|| self.mouseInside) {
        [self setNeedsDisplay:YES];
    } else {

    }
  }
 }

TableView无法使用mouseOver

0 个答案: