[英]Create textfield programmatically inside a graph subclass of NSView with swift in osx
我正在尝试在创建的条形图中添加轴文本。
为此,我使用了以下代码:
func showLabel (value: String, point: CGPoint) -> NSTextField {
let label = NSTextField(frame: NSMakeRect(point.x, point.y, 100, 100))
label.stringValue = "Axis Value"
label.textColor = NSColor.blueColor()
return label
}
但是,当在drawrect{}
调用此函数时,该函数不起作用,似乎缺少了一些东西。 如何显示轴标签? 它看起来应该像是excel条形图,带有标题和东西。
条形图看起来像这样,但是列数可以不同。
import Cocoa
class MyView: NSView {
override func drawRect(rect:NSRect){
let pathRect = NSInsetRect(self.bounds, 1, 1)
let path = NSBezierPath(rect: pathRect)
path.lineWidth = 1
NSColor.whiteColor().setFill()
NSColor.blackColor().setStroke()
path.fill()
path.stroke()
let bezierPath = NSBezierPath()
// Create a rectangle that's inset by 15% on all sides
let drawingRect = CGRectInset(self.bounds, self.bounds.size.width * 0.15,
self.bounds.size.height * 0.15);
// Define the points that make up the drawing
let bottomLeft = CGPointMake(CGRectGetMinX(drawingRect), CGRectGetMinY(drawingRect))
let topRight = CGPointMake(CGRectGetMinX(drawingRect), CGRectGetMaxY(drawingRect))
let bottomRight = CGPointMake(CGRectGetMaxX(drawingRect),
CGRectGetMinY(drawingRect))
// Start drawing
bezierPath.moveToPoint(topRight)
bezierPath.lineToPoint(bottomLeft)
bezierPath.lineToPoint(bottomRight)
// Finish drawing by closing the path
//bezierPath.closePath()
// Set the colors and draw them
//NSColor.redColor().setFill()
NSColor.blackColor().setStroke()
//bezierPath.fill()
bezierPath.stroke()
// Bars
let bezierPathBarres = NSBezierPath()
// m'haure d'inventar algo per fer aixo
var arrayY = [100, 200, 300, 200, 100, 200, 300, 0, 35, 100, 200, 30]
var arrayX = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]
for i in 0..<0 {
arrayY.append(30+i)
}
//let arrayX = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]
// entorn de X per barres
let numeroDeBarres: CGFloat = CGFloat(arrayY.count)
let espaiEntreBarres:CGFloat = 0.2 // estaria be fer-ho inspectable
let ampladaEixX = self.bounds.width * (1 - 0.30)
let espaiOcupatDelEixPerEspaisEntreBarres = ampladaEixX * espaiEntreBarres
let espaiOcupatDelEixPerBarres = ampladaEixX * (1 - espaiEntreBarres)
let espaiUnaBarra = espaiOcupatDelEixPerBarres / numeroDeBarres
let espaiUnaSeparacio = espaiOcupatDelEixPerEspaisEntreBarres / (numeroDeBarres + 1)
//entorn de Y per barres
let valorBarraMax: CGFloat = CGFloat(arrayY.maxElement()!)
let alçadaEixY = self.bounds.size.height * (1 - 0.30)
let alçadaBarraMax = alçadaEixY * 0.90
//creem un array d'alçades
var arrayAlçades: [CGFloat] = []
for i in 0..<arrayY.count {
let valorBarra = CGFloat(arrayY[i])
arrayAlçades.append(alçadaBarraMax * valorBarra / valorBarraMax)
}
for i in 0..<arrayY.count {
// Define the points that make up the drawing
//let bottomEspaiPunt = CGPointMake(CGRectGetMinX(drawingRect), CGRectGetMinY(drawingRect))
//let bottomBarraPuntEsquerra = CGPointMake(CGRectGetMinX(drawingRect)+(espaiUnaSeparacio + espaiUnaBarra) * CGFloat(i) + espaiUnaSeparacio, CGRectGetMinY(drawingRect))
//let topBarraPuntEsquerra = CGPointMake(CGRectGetMinX(drawingRect)+(espaiUnaSeparacio + espaiUnaBarra) * CGFloat(i) + espaiUnaSeparacio, CGRectGetMinY(drawingRect) + arrayAlçades[i])
//let topBarraPuntDreta = CGPointMake(CGRectGetMinX(drawingRect)+(espaiUnaSeparacio + espaiUnaBarra) * CGFloat(i) + espaiUnaBarra, CGRectGetMinY(drawingRect) + arrayAlçades[i])
//let bottomBarraPuntDreta = CGPointMake(CGRectGetMinX(drawingRect)+(espaiUnaSeparacio + espaiUnaBarra) * CGFloat(i) + espaiUnaBarra, CGRectGetMinY(drawingRect))
let rect = CGRect(x: CGRectGetMinX(drawingRect)+(espaiUnaSeparacio + espaiUnaBarra) * CGFloat(i) + espaiUnaSeparacio, y: CGRectGetMinY(drawingRect), width: espaiUnaBarra, height: arrayAlçades[i])
let path = NSBezierPath(rect:rect)
bezierPathBarres.appendBezierPath(path)
// Start drawing
//bezierPathBarres.moveToPoint(bottomBarraPuntEsquerra)
//bezierPathBarres.lineToPoint(topBarraPuntEsquerra)
//bezierPathBarres.lineToPoint(topBarraPuntDreta)
//bezierPathBarres.lineToPoint(bottomBarraPuntDreta)
// Adding
let text = showLabel(String(arrayX[i]), point: CGPointMake(CGRectGetMinX(drawingRect)+(espaiUnaSeparacio + espaiUnaBarra) * CGFloat(i) + espaiUnaSeparacio + espaiUnaBarra / 2 , CGRectGetMinY(drawingRect) - 0.15 / 2 * self.bounds.size.height))
self.addSubview(text)
// Finish drawing by closing the path
//bezierPathBarres.closePath()
}
// Set the colors and draw them
NSColor.greenColor().setFill()
NSColor.blackColor().setStroke()
bezierPathBarres.fill()
if arrayY.count<20 {
bezierPathBarres.stroke()
}
}
func showLabel (valor: String, point: CGPoint) -> NSTextField {
let label = NSTextField(frame: NSMakeRect(point.x, point.y, 100, 100))
label.stringValue = "2"
label.textColor = NSColor.blueColor()
return label
}
// radiate the bbox out until the hashmarks are further out than the bounds
}
let viewRect = NSRect(x: 0, y: 0, width: 150, height: 100)
let myEmptyView = MyView(frame: viewRect)
您需要将标签添加为包含标签的视图的子视图:
let label = showLabel(...)
self.addSubview(label)
尝试一下,看看是否可行。 顺便说一句,您不应将此代码放在drawRect
。 每次重新绘制视图时,最终都会添加一个新标签。
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