[英]Resizing subview of rotated UIView
我创建了一个 UIView 子类,它具有调整大小、旋转和移动功能。 我有一个 UITextView 作为子视图,它必须与父视图一起移动、旋转和调整大小。 一切正常,直到我旋转视图,然后调整它的大小; 子视图开始像这样出现故障: https : //gyazo.com/1341614679ada42311713cd53c1516ec (忽略旋转故障)
是什么导致了这个问题,如何解决?
这是我使用调整大小和旋转的代码:
// Resizing
func scale(recognizer: UILongPressGestureRecognizer) {
if recognizer.state == UIGestureRecognizerState.Changed {
let point = recognizer.locationInView(self)
var wChange = CGFloat(0.0), hChange = CGFloat(0.0)
wChange = point.x - self.prevPoint.x
let wRatioChange = wChange/bounds.size.width
hChange = wRatioChange * bounds.size.height
if abs(wChange) > 50.0 || abs(hChange) > 50.0 {
self.prevPoint = recognizer.locationOfTouch(0, inView: self)
return
}
bounds = CGRectMake(bounds.origin.x, bounds.origin.y, bounds.size.width+wChange, bounds.size.height+hChange)
self.prevPoint = recognizer.locationOfTouch(0, inView: self)
update() // Updating subviews frames
}
func update() {
// resizing of other subviews
deleteButton.center.x = self.frame.width - deleteButton.frame.width * 0.5
deleteButton.frame.origin.y = 0
sizeButton.frame.origin.x = self.frame.width - sizeButton.frame.width
sizeButton.frame.origin.y = self.frame.height - sizeButton.frame.height
self.theTextView.frame.size = CGSize(width: self.frame.width - self.deleteButton.frame.width*2*0.66666666,height: self.frame.height - self.deleteButton.frame.height )
//vRotate.frame.origin.x = 0
//vRotate.frame.origin.y = self.frame.height - sizeButton.frame.height
self.theTextView.center = CGPoint(x: self.frame.width/2,y: self.frame.height/2)
updateTextFont(self.theTextView)
self.theTextView.textAlignment = NSTextAlignment.Center
...
}
旋转功能:
func rotate(recognizer: UIPanGestureRecognizer) {
if recognizer.state == .Changed {
let ang = atan2(recognizer.locationInView(self.superview).y - center.y, recognizer.locationInView(self.superview).x - center.x)
print(ang)
let angleDiff = self.deltaAngle - ang
self.transform = CGAffineTransformMakeRotation(-angleDiff)
}
}
提前致谢!
好的,我解决了它,问题很简单,我在调整子视图框架的大小时使用了frame
而不是bounds
。 例如:
sizeButton.frame.origin.y = self.frame.height - sizeButton.frame.height
应该
sizeButton.frame.origin.y = self.bounds.height - sizeButton.frame.height
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