本文共 2649 字,大约阅读时间需要 8 分钟。
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; |
1 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]; |
1 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 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!