Swift 實踐之繪畫

工程目錄

這裡都使用storyboard,方便而又快捷.

繪畫的相關介紹

/* 1 cgcontextmovetopoint 開始畫線 2 cgcontextaddlinetopoint 畫直線 3 cgcontextaddellipseinrect 畫一橢圓 4 cgcontextsetlinecap 設定線條終點形狀 5 cgcontextsetlinedash 畫虛線 6 cgcontextaddrect 畫一方框 7 cgcontextstrokerect 指定矩形 8 cgcontextstrokerectwithwidth 指定矩形線寬度 9 cgcontextstrokelinesegments 一些直線 10 cgcontextaddarc 畫已曲線前倆店為中心中間倆店為起始弧度最後一資料為0則順時針畫 1則逆時針 11 cgcontextaddarctopoint(context,0,0, 2, 9, 40);//先畫倆條線從point 到弟1點，從弟1點到弟2點的線切割裡面的圓 12 cgcontextsetshadowwithcolor 設定陰影 13 cgcontextsetrgbfillcolor 填充顏色 14 cgcontextsetrgbstrokecolor 畫筆顏色設定 15 cgcontextsetfillcolorspace 顏色空間填充 16 cgconextsetstrokecolorspace 顏色空間畫筆設定 17 cgcontextfillrect 補充當前填充顏色的rect 18 cgcontextsetalaha 透明度 19 cgcontexttranslatectm 改變畫布位置 20 cgcontextsetlinewidth 設定線的寬度 21 cgcontextaddrects 畫多個線 22 cgcontextaddquadcurvetopoint 畫曲線 23 cgcontextstrokepath 開始繪製 24 cgcontextdrawpath 設定繪製模式 25 cgcontextclosepath 封閉當前線路 26 cgcontexttranslatectm(context, 0, rect.size.height); cgcontextscalectm(context, 1.0, -1.0);反轉畫布 27 cgcontextsetinterpolationquality 背景內建顏色質量等級 28 cgimagecreatewithimageinrect 從原中取小圖

*/

繪畫線條

//
//  drawlinesview.swift
//  study_drawshape
////  created by 周文春 on 16/3/17.
//import uikit
class
drawlinesview: uiview 
required init?(coder
adecoder: nscoder) 
override func drawrect(rect: cgrect) 
}

繪畫矩形

//
//  drawrectview.swift
//  study_drawshape
////  created by 周文春 on 16/3/17.
//import uikit
class drawrectview: uiview 
required init?(coder adecoder: nscoder) 
// only override drawrect: if you perform custom drawing.
// an empty implementation adversely affects performance during animation.
override func drawrect(rect: cgrect) 
}

繪畫圓

//
//  drawcircleview.swift
//  study_drawshape
////  created by 周文春 on 16/3/17.
//import uikit
class drawcircleview: uiview 
// only override drawrect: if you perform custom drawing.
// an empty implementation adversely affects performance during animation.
override func drawrect(rect: cgrect) 
}

繪畫

//
//  drawimageview.swift
//  study_drawshape
////  created by 周文春 on 16/3/17.
//import uikit
class drawimageview: uiview 
// only override drawrect: if you perform custom drawing.
// an empty implementation adversely affects performance during animation.
override func drawrect(rect: cgrect) 
}

不調整座標的話效果如下:

不新增狀態,再次繪其他圖的話效果如下:

繪製畫板

//
//  drawingboardview.swift
//  study_drawshape
////  created by 周文春 on 16/3/17.
//import uikit
class
drawingboardview: uiview 
var path = cgpathcreatemutable
()    override func touchesbegan(touches: set
, withevent
event: uievent?) 
}override func touchesmoved(touches: set
, withevent
event: uievent?) 
}// only override drawrect: if you perform custom drawing.
// an empty implementation adversely affects performance during animation.
override func drawrect(rect: cgrect) 
}

可以自己畫圖:

整體效果圖如下:

Swift 實踐之繪畫

Swift 實踐之簡單計算器

Swift 學習之陣列

Swift之鍵盤事件

Swift 實踐之繪畫

Swift 實踐之簡單計算器

Swift 學習之陣列

Swift之鍵盤事件

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