如何使NSWindow setFrame：.. animated：YES]功能动画下来而不是向上？

Question

当我调用我的[window setFrame：frame animated：YES]来放大窗口时，它工作得很好但是它会动画并且它会在状态栏后面。如何让窗口生成动画呢？

Answer 1

将y坐标减小到与增加高度相同的距离。

CGFloat amountToIncreaseWidth = 100, amountToIncreaseHeight = 100;
NSRect oldFrame = [window frame];
oldFrame.size.width += amountToIncreaseWidth;
oldFrame.size.height += amountToIncreaseHeight;
oldFrame.origin.y -= amountToIncreaseHeight;
[window setFrame:oldFrame animated:YES];

Answer 2

我找不到一个简单的方法来做这个，所以我写了一个动画函数，它会调整窗口大小并同时移动它，从而给出它动画效果的外观。

- (IBAction)startAnimations:(id)sender{

    NSViewAnimation *theAnim;
    NSRect firstViewFrame;
    NSRect newViewFrame;
    NSMutableDictionary* firstViewDict;

    {
        firstViewDict = [NSMutableDictionary dictionaryWithCapacity:3];
        firstViewFrame = [window frame];
        [firstViewDict setObject:window forKey:NSViewAnimationTargetKey];

        [firstViewDict setObject:[NSValue valueWithRect:firstViewFrame]
                          forKey:NSViewAnimationStartFrameKey];

        newViewFrame = firstViewFrame;

        newViewFrame.size.height += 100;
        newViewFrame.origin.y -= 100;

        [firstViewDict setObject:[NSValue valueWithRect:newViewFrame]
                          forKey:NSViewAnimationEndFrameKey];
    }

    theAnim = [[NSViewAnimation alloc] initWithViewAnimations:[NSArray
                                                               arrayWithObjects:firstViewDict, nil]];

    [theAnim setDuration:1.0]; 
    [theAnim startAnimation];

    [theAnim release];
}