天天看点

【COCOA(MAC) APPLICATION 开发系列之三】自定义NSVIEW并绘制一些常见的图形及字符串;

不多说,比较简单,直接给出源码,大家作为参考吧。

对于cocoa application 话说回来比较easy,如果之前你接触过ios 的ib的话 ,基本上没什么可说的,上手很快;

因此对于cocoa application 不会太快的更新,接着himi将对之前做的动编彻底的更新一版;后期有时间将继续更新此系列;

1

  言归正传,对于自定义nsview上一篇已经介绍了,而且本篇主要继续深入nsview的drawrect进行继续研究,示例代码如下,比较容易理解,而且都已备注的很清楚;

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

//

//  hview.m

//  created by himi on 12-6-7.

//  copyright (c) 2012年 himi. all rights reserved.

#import "hview.h"

@implementation hview

- (id)initwithframe:(nsrect)frame

{

    self = [super initwithframe:frame];

    if (self) {

        // initialization code here.

    }

    return self;

}

- (void)drawrect:(nsrect)dirtyrect

    //-----------获取整个myview尺寸------------

    nsrect screen = [self bounds];

    int sw = screen.size.width;

    int sh = screen.size.height;

    //-----------设置整个myview的颜色------------

    [[nscolor graycolor] set];

    //-----------填充整个myview---------------

    nsrectfill(screen);

    //-----------绘制字符串---------------

    nsstring * strh= @"基础绘制   --by himi";

    //--绘制不带属性字符串

    [strh drawatpoint:nsmakepoint(sh*0.5, sh-30) withattributes:null];

40

41

42

43

44

45

46

47

    //--绘制带属性字符串

    nsmutabledictionary *md = [nsmutabledictionary dictionary];

    [md setobject:[nsfont fontwithname:@"times" size:20] forkey:nsfontattributename];

    [strh drawatpoint:nsmakepoint(sh*0.5, sh-70) withattributes:md];

    //--------绘制矩形----

    nsrect rect1 = nsmakerect(sh*0.5, sh-100, 30, 20);

    nsrect rect2 = nsmakerect(sh*0.5, sh-130, 30, 20);

    //填充矩形

    [nsbezierpath fillrect:rect1];

    //绘制矩形

    [nsbezierpath strokerect:rect2];

    //--------绘制线条(十字线)----

    [[nscolor greencolor] set];

    nspoint  bm =nsmakepoint(sw*0.5, 0);

    nspoint  top =nsmakepoint(sw*0.5, sh);

    nspoint  lf =nsmakepoint(0, sh*0.5);

    nspoint  rt =nsmakepoint(sw, sh*0.5);

    [nsbezierpath strokelinefrompoint:bm topoint:top];

    [nsbezierpath strokelinefrompoint:lf topoint:rt];

    //-------绘制椭圆

    [[nscolor redcolor] set];

    [[nsbezierpath bezierpathwithovalinrect:screen] stroke];

    [self setneedsdisplay:yes];// 强制绘画

//【备注】

//    cgcontextref ref = [[nsgraphicscontext currentcontext] graphicsport];// 获取画布

//    cgcontextflush(ref);//刷新画布

-(void) mousedragged:(nsevent *)theevent{

    nspoint mp = [self convertpoint:[theevent locationinwindow] fromview:nil];// 鼠标新坐标

    nslog(@"mousedragged~%f,%f",mp.x,mp.y);

-(void) mouseup:(nsevent *)theevent{

    nslog(@"mouseup");

-(void) mousedown:(nsevent *)theevent{

    nslog(@"mousedown");

@end

 注意的是:备注 这两行代码是直接通过获取画布,更新画布进行绘制,其中绘制代码省略,比较容易,这里起个头,推荐使用此种方式绘制;对于做游戏的我们,对于画布刷新画布我想是再熟悉不过了!

运行截图:

【COCOA(MAC) APPLICATION 开发系列之三】自定义NSVIEW并绘制一些常见的图形及字符串;

<a href="http://www.himigame.com/wp-content/uploads/2012/06/13.png"></a>