IOS 作业项目(4)步步完成 画图 程序(中)
2013-11-21 14:04
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一,承接上文,继续本文 [UIButton buttonWithType:UIButtonTypeRoundedRect]; 如此声明的按钮才会有点击闪动的效果!如果直接frame方式声明就不会有.
1,基本界面
1,首先在预编译文件SuperDrawingSample-Prefix.pch中添加颜色宏函数#define RGB(r,g,b) [UIColor colorWithRed:r/255.0f green:g/255.0f blue:b/255.0f alpha:1.0f]
2,在-(UIView *)mainScene中添加内容如下:
//背景颜色
UIView *bgView=[[UIView alloc]initWithFrame:self.view.bounds];
bgView.backgroundColor=RGB(189, 186, 255);
//给视图添加边框
bgView.layer.borderWidth=1.0f;
bgView.layer.borderColor=[UIColor blackColor].CGColor;
[_mainScene addSubview:bgView];
//2,标题New按钮父视图
UIButton *leftButton=[UIButton buttonWithType:UIButtonTypeRoundedRect];
leftButton.backgroundColor=[UIColor whiteColor];
[leftButton setTitle:@"New" forState:UIControlStateNormal];
leftButton.layer.borderWidth=1.0f;
leftButton.layer.borderColor=[UIColor blackColor].CGColor;
leftButton.frame =CGRectMake(0, 0, 64, 64);
[_mainScene addSubview:leftButton];
//3,标题title标签视图
UILabel *midLabel=[[UILabel alloc]initWithFrame:CGRectMake(63, 0, 194, 64)];
midLabel.backgroundColor=RGB(159, 235, 204);
midLabel.text=@"Drawing";
midLabel.font=[UIFont fontWithName:@"chalkboard se" size:30];
midLabel.textColor=RGB(248, 109, 204);
midLabel.textAlignment=NSTextAlignmentCenter;
midLabel.layer.borderWidth=1.0f;
midLabel.layer.borderColor=[UIColor blackColor].CGColor;
[_mainScene addSubview:midLabel];
//2,标题About按钮父视图
UIButton *rightButton=[UIButton buttonWithType:UIButtonTypeRoundedRect];
rightButton.backgroundColor=[UIColor whiteColor];
[rightButton setTitle:@"About" forState:UIControlStateNormal];
rightButton.layer.borderWidth=1.0f;
rightButton.layer.borderColor=[UIColor blackColor].CGColor;
rightButton.frame =CGRectMake(256, 0, 64, 64);
[rightButton addTarget:self action:@selector(mainSceneToAboutScene:) forControlEvents:UIControlEventTouchUpInside];
[_mainScene addSubview:rightButton];
//分页符
UIPageControl *pageControl=[[UIPageControl alloc]init];
pageControl.frame=CGRectMake(0, 460, 320, 20);
pageControl.numberOfPages=0;
pageControl.currentPage=0;
[_mainScene addSubview:pageControl];
///////////////////////////////////////////
//3,实例化测试控制按钮
CGRect frame=CGRectMake(0, 100, 320, 60);
UISegmentedControl *testControl=[[UISegmentedControl alloc]initWithFrame:frame];
testControl.momentary=YES;
[testControl insertSegmentWithTitle:@"About" atIndex:0 animated:NO];
[testControl insertSegmentWithTitle:@"Drawing" atIndex:0 animated:NO];
[testControl insertSegmentWithTitle:@"New" atIndex:0 animated:NO];
testControl.tag=KMainSceneTestControlTag;
//5,滚动视图
UIScrollView *scrollView=[[UIScrollView alloc]initWithFrame:CGRectMake(10, 74, 300, 386)];
scrollView.backgroundColor=[UIColor whiteColor];
scrollView.contentSize=CGSizeZero;
scrollView.pagingEnabled=YES;
scrollView.layer.borderWidth=1.0f;
scrollView.layer.borderColor=[UIColor blackColor].CGColor;
scrollView.delegate=self;
[_mainScene addSubview:scrollView];
//4,添加测试按钮触发的测试方法
[testControl addTarget:self action:@selector(testSegue:) forControlEvents:UIControlEventValueChanged];
[_mainScene addSubview:testControl];
其他相似界面设置方式和这个大同小异,按相同方式设置即可.
3,透明页面的设置(4 5 6页面)
以背景色设置页面为例,4,5页相似
-(UIView *)bgColorScene
{
//如果不等于空则实例化场景
if (_bgColorScene!=Nil) {
return_bgColorScene;
}
_bgColorScene=[[UIViewalloc]initWithFrame:self.view.bounds];
_bgColorScene.backgroundColor=[UIColorwhiteColor];
CGRect frame=CGRectMake(0, 100, 320, 60);
////////////////////////////
//1,灰色半透明视图
UIView * bgView=[[UIView alloc]initWithFrame:self.view.bounds];
bgView.backgroundColor=[UIColor grayColor];
bgView.alpha=0.75f;
[_bgColorScene addSubview:bgView];
//2,中间白色提醒背景
UIView *middleView=[[UIView alloc]initWithFrame:CGRectMake(40, 150, 240, 180)];
middleView.backgroundColor=[UIColor whiteColor];
middleView.layer.borderWidth=1.0f;
middleView.layer.borderColor=RGB(0, 0, 0).CGColor;
//2.1 中,左,取消按钮
UIButton *leftButton=[UIButtonbuttonWithType:UIButtonTypeRoundedRect];
leftButton.frame=CGRectMake(0, 0,70, 32);
leftButton.layer.borderWidth=1.0f;
leftButton.layer.borderColor=RGB(0, 0, 0).CGColor;
[leftButton setTitle:@"取消" forState:UIControlStateNormal];
[leftButton setTitleColor:[UIColorblackColor] forState:UIControlStateNormal];
[middleView addSubview:leftButton];
//2.2 中间的label
UILabel *midLabel=[[UILabel alloc]initWithFrame:CGRectMake(70, 0, 100, 32)];
midLabel.text=@"背景颜色";
midLabel.textAlignment=NSTextAlignmentCenter;
midLabel.layer.borderColor=RGB(0, 0, 0).CGColor;
midLabel.layer.borderWidth=1.0f;
[middleView addSubview:midLabel];
//2.3 右边的完成按钮
UIButton *OkButton=[UIButtonbuttonWithType:UIButtonTypeRoundedRect];
OkButton.frame=CGRectMake(170, 0,70, 32);
OkButton.layer.borderWidth=1.0f;
OkButton.layer.borderColor=RGB(0, 0, 0).CGColor;
[OkButton setTitle:@"完成"forState:UIControlStateNormal];
[OkButton setTitleColor:[UIColorblackColor] forState:UIControlStateNormal];
[middleView addSubview:OkButton];
//三个滑块属性设置
UISlider *sliderR=[[UISlider alloc]initWithFrame:CGRectMake(10, 32, 155, 49)];
sliderR.minimumTrackTintColor=[UIColorredColor];
sliderR.minimumValue=0;
sliderR.maximumValue=1;
[middleView addSubview:sliderR];
UISlider *sliderG=[[UISlider alloc]initWithFrame:CGRectMake(10, 71, 155, 49)];
sliderG.minimumTrackTintColor=[UIColorgreenColor];
sliderG.minimumValue=0;
sliderG.maximumValue=1;
[middleView addSubview:sliderG];
UISlider *sliderB=[[UISlider alloc]initWithFrame:CGRectMake(10, 114, 155, 49)];
sliderB.minimumTrackTintColor=[UIColorblueColor];
sliderB.minimumValue=0;
sliderB.maximumValue=1;
[middleView addSubview:sliderB];
//三个滑块后面的颜色标签
UILabel *Rlabel=[[UILabel alloc]initWithFrame:CGRectMake(170, 40, 45, 30)];
Rlabel.backgroundColor=[UIColor redColor];
Rlabel.layer.borderWidth=1;
Rlabel.layer.borderColor=[UIColorblackColor].CGColor;
Rlabel.text=@"red";
Rlabel.textColor=[UIColor whiteColor];
Rlabel.textAlignment=NSTextAlignmentCenter;
Rlabel.font=[UIFont fontWithName:@"chalkBoard se" size:14];
[middleView addSubview:Rlabel];
UILabel *Glabel=[[UILabel alloc]initWithFrame:CGRectMake(170, 79, 45, 30)];
Glabel.backgroundColor=[UIColor greenColor];
Glabel.layer.borderWidth=1;
Glabel.layer.borderColor=[UIColorblackColor].CGColor;
Glabel.text=@"green";
Glabel.textColor=[UIColor whiteColor];
Glabel.textAlignment=NSTextAlignmentCenter;
Glabel.font=[UIFont fontWithName:@"chalkBoard se" size:14];
[middleView addSubview:Glabel];
UILabel *Blabel=[[UILabel alloc]initWithFrame:CGRectMake(170, 118, 45, 30)];
Blabel.backgroundColor=[UIColor blueColor];
Blabel.layer.borderWidth=1;
Blabel.layer.borderColor=[UIColorblackColor].CGColor;
Blabel.text=@"blue";
Blabel.textColor=[UIColor whiteColor];
Blabel.textAlignment=NSTextAlignmentCenter;
Blabel.font=[UIFont fontWithName:@"chalkBoard se" size:14];
[middleView addSubview:Blabel];
UISegmentedControl *testControl=[[UISegmentedControlalloc]initWithFrame:frame];
testControl.momentary=YES;
[testControl insertSegmentWithTitle:@"完成"atIndex:0animated:NO];
[testControl insertSegmentWithTitle:@"背景颜色" atIndex:0 animated:NO];
[testControl insertSegmentWithTitle:@"取消"atIndex:0animated:NO];
testControl.tag=KBgColorSceneTestControlTag;
//添加测试按钮触发的测试方法
[testControl addTarget:self action:@selector(testSegue:) forControlEvents:UIControlEventValueChanged];
[_bgColorScene addSubview:testControl];
_bgColorScene.frame=self.view.bounds;
_bgColorScene.backgroundColor=[UIColorclearColor];
[_bgColorScene addSubview:middleView];
return_bgColorScene;
}
6页背景色视图设置
-(UIView *)lineWidthScene
{
//如果不等于空则实例化场景
if (_lineWidthScene!=Nil) {
return_lineWidthScene;
}
_lineWidthScene=[[UIViewalloc]initWithFrame:self.view.bounds];
_lineWidthScene.backgroundColor=[UIColorwhiteColor];
CGRect frame=CGRectMake(0, 100, 320, 60);
UISegmentedControl *testControl=[[UISegmentedControlalloc]initWithFrame:frame];
testControl.momentary=YES;
[testControl insertSegmentWithTitle:@"完成"atIndex:0animated:NO];
[testControl insertSegmentWithTitle:@"画笔大小" atIndex:0 animated:NO];
[testControl insertSegmentWithTitle:@"取消"atIndex:0animated:NO];
testControl.tag=KLineWidthSceneTestControlTag;
//添加测试按钮触发的测试方法
[testControl addTarget:self action:@selector(testSegue:) forControlEvents:UIControlEventValueChanged];
[_lineWidthScene addSubview:testControl];
_lineWidthScene.frame=self.view.bounds;
_lineWidthScene.backgroundColor=[UIColorclearColor];
////////////////////////////
//1,灰色半透明视图
UIView * bgView=[[UIView alloc]initWithFrame:self.view.bounds];
bgView.backgroundColor=[UIColor grayColor];
bgView.alpha=0.75f;
[_lineWidthScene addSubview:bgView];
//2,中间白色提醒背景
UIView *middleView=[[UIView alloc]initWithFrame:CGRectMake(40, 150, 240, 180)];
middleView.backgroundColor=[UIColor whiteColor];
middleView.layer.borderWidth=1.0f;
middleView.layer.borderColor=RGB(0, 0, 0).CGColor;
//brown背景
UIView *brownView=[[UIView alloc]initWithFrame:CGRectMake(0, 32, 240, 148)];
brownView.backgroundColor=[UIColor brownColor];
brownView.layer.borderWidth=1.0f;
brownView.layer.borderColor=RGB(0, 0, 0).CGColor;
[middleView addSubview:brownView];
//2.1 中,左,取消按钮
UIButton *leftButton=[UIButtonbuttonWithType:UIButtonTypeRoundedRect];
leftButton.frame=CGRectMake(0, 0,70, 32);
leftButton.layer.borderWidth=1.0f;
leftButton.layer.borderColor=RGB(0, 0, 0).CGColor;
[leftButton setTitle:@"取消" forState:UIControlStateNormal];
[leftButton setTitleColor:[UIColorblackColor] forState:UIControlStateNormal];
[middleView addSubview:leftButton];
//2.2 中间的label
UILabel *midLabel=[[UILabel alloc]initWithFrame:CGRectMake(70, 0, 100, 32)];
midLabel.text=@"画笔大小";
midLabel.textAlignment=NSTextAlignmentCenter;
midLabel.layer.borderColor=RGB(0, 0, 0).CGColor;
midLabel.layer.borderWidth=1.0f;
[middleView addSubview:midLabel];
//2.3 右边的完成按钮
UIButton *OkButton=[UIButtonbuttonWithType:UIButtonTypeRoundedRect];
OkButton.frame=CGRectMake(170, 0,70, 32);
OkButton.layer.borderWidth=1.0f;
OkButton.layer.borderColor=RGB(0, 0, 0).CGColor;
[OkButton setTitle:@"完成"forState:UIControlStateNormal];
[OkButton setTitleColor:[UIColorblackColor] forState:UIControlStateNormal];
[middleView addSubview:OkButton];
//三个滑块属性设置
lineWidthSlider=[[UISlideralloc]initWithFrame:CGRectMake(10, 82, 155, 49)];
lineWidthSlider.minimumTrackTintColor=[UIColorredColor];
lineWidthSlider.minimumValue=0;
lineWidthSlider.maximumValue=1;
[middleView addSubview:lineWidthSlider];
[_lineWidthScene addSubview:middleView];
return_lineWidthScene;
}
6,设置线宽的时候,后面动态大小的圆的画法
创建一个CircleView视图类,继承与UIView,添加属性
@property (nonatomic,assign)CGFloat radius;
添加内容
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
// Initialization code
}
returnself;
}
-(void)setRadius:(CGFloat)radius
{
if (_radius==radius) {
return;
}
_radius=radius;
//当半径发生变化时,重新绘制圆形
//setNeedsdisplay自动调用drawRect:
[selfsetNeedsDisplay];
}
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect
{
[super drawRect:rect];
//获取画布
CGContextRef context=UIGraphicsGetCurrentContext();
//生成路径
CGMutablePathRef path=CGPathCreateMutable();
//路径内添加圆形...
CGPathAddArc(path, NULL, CGRectGetMidX(self.bounds), CGRectGetMidY(self.bounds)+2, self.radius, 0, 2*M_PI, NO);
//设置路径闭合
//CGPathCloseSubpath(path);
//设置画布线条的描绘颜色
CGContextSetStrokeColorWithColor(context, RGB(0, 0, 0).CGColor);
//设置画布线条的填充颜色
CGContextSetFillColorWithColor(context, [UIColorwhiteColor].CGColor);
//设置画布线条的宽度
CGContextSetLineWidth(context, 1.0f);
//添加路径到画布上
CGContextAddPath(context, path);
//开始描线
CGContextStrokePath(context);
//添加路径到画布上
CGContextAddPath(context, path);
//开始填充
CGContextFillPath(context);
//释放路径
CGPathRelease(path);
}
在6视图里引用
//添加画圆视图..
CircleView *circleView;设置为成员变量
circleView=[[CircleViewalloc]initWithFrame:CGRectMake(170,CGRectGetMidY(middleView.bounds), 25, 25)];
circleView.backgroundColor=[UIColorclearColor];
[middleView addSubview: circleView];
#pragma mark -私有方法,拖动滑块的时候触发
-(void)lineWidthFromSlider:(UISlider *)slider
{
circleView.radius=slider.value;
}
1,基本界面
1,首先在预编译文件SuperDrawingSample-Prefix.pch中添加颜色宏函数#define RGB(r,g,b) [UIColor colorWithRed:r/255.0f green:g/255.0f blue:b/255.0f alpha:1.0f]
2,在-(UIView *)mainScene中添加内容如下:
//背景颜色
UIView *bgView=[[UIView alloc]initWithFrame:self.view.bounds];
bgView.backgroundColor=RGB(189, 186, 255);
//给视图添加边框
bgView.layer.borderWidth=1.0f;
bgView.layer.borderColor=[UIColor blackColor].CGColor;
[_mainScene addSubview:bgView];
//2,标题New按钮父视图
UIButton *leftButton=[UIButton buttonWithType:UIButtonTypeRoundedRect];
leftButton.backgroundColor=[UIColor whiteColor];
[leftButton setTitle:@"New" forState:UIControlStateNormal];
leftButton.layer.borderWidth=1.0f;
leftButton.layer.borderColor=[UIColor blackColor].CGColor;
leftButton.frame =CGRectMake(0, 0, 64, 64);
[_mainScene addSubview:leftButton];
//3,标题title标签视图
UILabel *midLabel=[[UILabel alloc]initWithFrame:CGRectMake(63, 0, 194, 64)];
midLabel.backgroundColor=RGB(159, 235, 204);
midLabel.text=@"Drawing";
midLabel.font=[UIFont fontWithName:@"chalkboard se" size:30];
midLabel.textColor=RGB(248, 109, 204);
midLabel.textAlignment=NSTextAlignmentCenter;
midLabel.layer.borderWidth=1.0f;
midLabel.layer.borderColor=[UIColor blackColor].CGColor;
[_mainScene addSubview:midLabel];
//2,标题About按钮父视图
UIButton *rightButton=[UIButton buttonWithType:UIButtonTypeRoundedRect];
rightButton.backgroundColor=[UIColor whiteColor];
[rightButton setTitle:@"About" forState:UIControlStateNormal];
rightButton.layer.borderWidth=1.0f;
rightButton.layer.borderColor=[UIColor blackColor].CGColor;
rightButton.frame =CGRectMake(256, 0, 64, 64);
[rightButton addTarget:self action:@selector(mainSceneToAboutScene:) forControlEvents:UIControlEventTouchUpInside];
[_mainScene addSubview:rightButton];
//分页符
UIPageControl *pageControl=[[UIPageControl alloc]init];
pageControl.frame=CGRectMake(0, 460, 320, 20);
pageControl.numberOfPages=0;
pageControl.currentPage=0;
[_mainScene addSubview:pageControl];
///////////////////////////////////////////
//3,实例化测试控制按钮
CGRect frame=CGRectMake(0, 100, 320, 60);
UISegmentedControl *testControl=[[UISegmentedControl alloc]initWithFrame:frame];
testControl.momentary=YES;
[testControl insertSegmentWithTitle:@"About" atIndex:0 animated:NO];
[testControl insertSegmentWithTitle:@"Drawing" atIndex:0 animated:NO];
[testControl insertSegmentWithTitle:@"New" atIndex:0 animated:NO];
testControl.tag=KMainSceneTestControlTag;
//5,滚动视图
UIScrollView *scrollView=[[UIScrollView alloc]initWithFrame:CGRectMake(10, 74, 300, 386)];
scrollView.backgroundColor=[UIColor whiteColor];
scrollView.contentSize=CGSizeZero;
scrollView.pagingEnabled=YES;
scrollView.layer.borderWidth=1.0f;
scrollView.layer.borderColor=[UIColor blackColor].CGColor;
scrollView.delegate=self;
[_mainScene addSubview:scrollView];
//4,添加测试按钮触发的测试方法
[testControl addTarget:self action:@selector(testSegue:) forControlEvents:UIControlEventValueChanged];
[_mainScene addSubview:testControl];
其他相似界面设置方式和这个大同小异,按相同方式设置即可.
3,透明页面的设置(4 5 6页面)
以背景色设置页面为例,4,5页相似
-(UIView *)bgColorScene
{
//如果不等于空则实例化场景
if (_bgColorScene!=Nil) {
return_bgColorScene;
}
_bgColorScene=[[UIViewalloc]initWithFrame:self.view.bounds];
_bgColorScene.backgroundColor=[UIColorwhiteColor];
CGRect frame=CGRectMake(0, 100, 320, 60);
////////////////////////////
//1,灰色半透明视图
UIView * bgView=[[UIView alloc]initWithFrame:self.view.bounds];
bgView.backgroundColor=[UIColor grayColor];
bgView.alpha=0.75f;
[_bgColorScene addSubview:bgView];
//2,中间白色提醒背景
UIView *middleView=[[UIView alloc]initWithFrame:CGRectMake(40, 150, 240, 180)];
middleView.backgroundColor=[UIColor whiteColor];
middleView.layer.borderWidth=1.0f;
middleView.layer.borderColor=RGB(0, 0, 0).CGColor;
//2.1 中,左,取消按钮
UIButton *leftButton=[UIButtonbuttonWithType:UIButtonTypeRoundedRect];
leftButton.frame=CGRectMake(0, 0,70, 32);
leftButton.layer.borderWidth=1.0f;
leftButton.layer.borderColor=RGB(0, 0, 0).CGColor;
[leftButton setTitle:@"取消" forState:UIControlStateNormal];
[leftButton setTitleColor:[UIColorblackColor] forState:UIControlStateNormal];
[middleView addSubview:leftButton];
//2.2 中间的label
UILabel *midLabel=[[UILabel alloc]initWithFrame:CGRectMake(70, 0, 100, 32)];
midLabel.text=@"背景颜色";
midLabel.textAlignment=NSTextAlignmentCenter;
midLabel.layer.borderColor=RGB(0, 0, 0).CGColor;
midLabel.layer.borderWidth=1.0f;
[middleView addSubview:midLabel];
//2.3 右边的完成按钮
UIButton *OkButton=[UIButtonbuttonWithType:UIButtonTypeRoundedRect];
OkButton.frame=CGRectMake(170, 0,70, 32);
OkButton.layer.borderWidth=1.0f;
OkButton.layer.borderColor=RGB(0, 0, 0).CGColor;
[OkButton setTitle:@"完成"forState:UIControlStateNormal];
[OkButton setTitleColor:[UIColorblackColor] forState:UIControlStateNormal];
[middleView addSubview:OkButton];
//三个滑块属性设置
UISlider *sliderR=[[UISlider alloc]initWithFrame:CGRectMake(10, 32, 155, 49)];
sliderR.minimumTrackTintColor=[UIColorredColor];
sliderR.minimumValue=0;
sliderR.maximumValue=1;
[middleView addSubview:sliderR];
UISlider *sliderG=[[UISlider alloc]initWithFrame:CGRectMake(10, 71, 155, 49)];
sliderG.minimumTrackTintColor=[UIColorgreenColor];
sliderG.minimumValue=0;
sliderG.maximumValue=1;
[middleView addSubview:sliderG];
UISlider *sliderB=[[UISlider alloc]initWithFrame:CGRectMake(10, 114, 155, 49)];
sliderB.minimumTrackTintColor=[UIColorblueColor];
sliderB.minimumValue=0;
sliderB.maximumValue=1;
[middleView addSubview:sliderB];
//三个滑块后面的颜色标签
UILabel *Rlabel=[[UILabel alloc]initWithFrame:CGRectMake(170, 40, 45, 30)];
Rlabel.backgroundColor=[UIColor redColor];
Rlabel.layer.borderWidth=1;
Rlabel.layer.borderColor=[UIColorblackColor].CGColor;
Rlabel.text=@"red";
Rlabel.textColor=[UIColor whiteColor];
Rlabel.textAlignment=NSTextAlignmentCenter;
Rlabel.font=[UIFont fontWithName:@"chalkBoard se" size:14];
[middleView addSubview:Rlabel];
UILabel *Glabel=[[UILabel alloc]initWithFrame:CGRectMake(170, 79, 45, 30)];
Glabel.backgroundColor=[UIColor greenColor];
Glabel.layer.borderWidth=1;
Glabel.layer.borderColor=[UIColorblackColor].CGColor;
Glabel.text=@"green";
Glabel.textColor=[UIColor whiteColor];
Glabel.textAlignment=NSTextAlignmentCenter;
Glabel.font=[UIFont fontWithName:@"chalkBoard se" size:14];
[middleView addSubview:Glabel];
UILabel *Blabel=[[UILabel alloc]initWithFrame:CGRectMake(170, 118, 45, 30)];
Blabel.backgroundColor=[UIColor blueColor];
Blabel.layer.borderWidth=1;
Blabel.layer.borderColor=[UIColorblackColor].CGColor;
Blabel.text=@"blue";
Blabel.textColor=[UIColor whiteColor];
Blabel.textAlignment=NSTextAlignmentCenter;
Blabel.font=[UIFont fontWithName:@"chalkBoard se" size:14];
[middleView addSubview:Blabel];
UISegmentedControl *testControl=[[UISegmentedControlalloc]initWithFrame:frame];
testControl.momentary=YES;
[testControl insertSegmentWithTitle:@"完成"atIndex:0animated:NO];
[testControl insertSegmentWithTitle:@"背景颜色" atIndex:0 animated:NO];
[testControl insertSegmentWithTitle:@"取消"atIndex:0animated:NO];
testControl.tag=KBgColorSceneTestControlTag;
//添加测试按钮触发的测试方法
[testControl addTarget:self action:@selector(testSegue:) forControlEvents:UIControlEventValueChanged];
[_bgColorScene addSubview:testControl];
_bgColorScene.frame=self.view.bounds;
_bgColorScene.backgroundColor=[UIColorclearColor];
[_bgColorScene addSubview:middleView];
return_bgColorScene;
}
6页背景色视图设置
-(UIView *)lineWidthScene
{
//如果不等于空则实例化场景
if (_lineWidthScene!=Nil) {
return_lineWidthScene;
}
_lineWidthScene=[[UIViewalloc]initWithFrame:self.view.bounds];
_lineWidthScene.backgroundColor=[UIColorwhiteColor];
CGRect frame=CGRectMake(0, 100, 320, 60);
UISegmentedControl *testControl=[[UISegmentedControlalloc]initWithFrame:frame];
testControl.momentary=YES;
[testControl insertSegmentWithTitle:@"完成"atIndex:0animated:NO];
[testControl insertSegmentWithTitle:@"画笔大小" atIndex:0 animated:NO];
[testControl insertSegmentWithTitle:@"取消"atIndex:0animated:NO];
testControl.tag=KLineWidthSceneTestControlTag;
//添加测试按钮触发的测试方法
[testControl addTarget:self action:@selector(testSegue:) forControlEvents:UIControlEventValueChanged];
[_lineWidthScene addSubview:testControl];
_lineWidthScene.frame=self.view.bounds;
_lineWidthScene.backgroundColor=[UIColorclearColor];
////////////////////////////
//1,灰色半透明视图
UIView * bgView=[[UIView alloc]initWithFrame:self.view.bounds];
bgView.backgroundColor=[UIColor grayColor];
bgView.alpha=0.75f;
[_lineWidthScene addSubview:bgView];
//2,中间白色提醒背景
UIView *middleView=[[UIView alloc]initWithFrame:CGRectMake(40, 150, 240, 180)];
middleView.backgroundColor=[UIColor whiteColor];
middleView.layer.borderWidth=1.0f;
middleView.layer.borderColor=RGB(0, 0, 0).CGColor;
//brown背景
UIView *brownView=[[UIView alloc]initWithFrame:CGRectMake(0, 32, 240, 148)];
brownView.backgroundColor=[UIColor brownColor];
brownView.layer.borderWidth=1.0f;
brownView.layer.borderColor=RGB(0, 0, 0).CGColor;
[middleView addSubview:brownView];
//2.1 中,左,取消按钮
UIButton *leftButton=[UIButtonbuttonWithType:UIButtonTypeRoundedRect];
leftButton.frame=CGRectMake(0, 0,70, 32);
leftButton.layer.borderWidth=1.0f;
leftButton.layer.borderColor=RGB(0, 0, 0).CGColor;
[leftButton setTitle:@"取消" forState:UIControlStateNormal];
[leftButton setTitleColor:[UIColorblackColor] forState:UIControlStateNormal];
[middleView addSubview:leftButton];
//2.2 中间的label
UILabel *midLabel=[[UILabel alloc]initWithFrame:CGRectMake(70, 0, 100, 32)];
midLabel.text=@"画笔大小";
midLabel.textAlignment=NSTextAlignmentCenter;
midLabel.layer.borderColor=RGB(0, 0, 0).CGColor;
midLabel.layer.borderWidth=1.0f;
[middleView addSubview:midLabel];
//2.3 右边的完成按钮
UIButton *OkButton=[UIButtonbuttonWithType:UIButtonTypeRoundedRect];
OkButton.frame=CGRectMake(170, 0,70, 32);
OkButton.layer.borderWidth=1.0f;
OkButton.layer.borderColor=RGB(0, 0, 0).CGColor;
[OkButton setTitle:@"完成"forState:UIControlStateNormal];
[OkButton setTitleColor:[UIColorblackColor] forState:UIControlStateNormal];
[middleView addSubview:OkButton];
//三个滑块属性设置
lineWidthSlider=[[UISlideralloc]initWithFrame:CGRectMake(10, 82, 155, 49)];
lineWidthSlider.minimumTrackTintColor=[UIColorredColor];
lineWidthSlider.minimumValue=0;
lineWidthSlider.maximumValue=1;
[middleView addSubview:lineWidthSlider];
[_lineWidthScene addSubview:middleView];
return_lineWidthScene;
}
6,设置线宽的时候,后面动态大小的圆的画法
创建一个CircleView视图类,继承与UIView,添加属性
@property (nonatomic,assign)CGFloat radius;
添加内容
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
// Initialization code
}
returnself;
}
-(void)setRadius:(CGFloat)radius
{
if (_radius==radius) {
return;
}
_radius=radius;
//当半径发生变化时,重新绘制圆形
//setNeedsdisplay自动调用drawRect:
[selfsetNeedsDisplay];
}
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect
{
[super drawRect:rect];
//获取画布
CGContextRef context=UIGraphicsGetCurrentContext();
//生成路径
CGMutablePathRef path=CGPathCreateMutable();
//路径内添加圆形...
CGPathAddArc(path, NULL, CGRectGetMidX(self.bounds), CGRectGetMidY(self.bounds)+2, self.radius, 0, 2*M_PI, NO);
//设置路径闭合
//CGPathCloseSubpath(path);
//设置画布线条的描绘颜色
CGContextSetStrokeColorWithColor(context, RGB(0, 0, 0).CGColor);
//设置画布线条的填充颜色
CGContextSetFillColorWithColor(context, [UIColorwhiteColor].CGColor);
//设置画布线条的宽度
CGContextSetLineWidth(context, 1.0f);
//添加路径到画布上
CGContextAddPath(context, path);
//开始描线
CGContextStrokePath(context);
//添加路径到画布上
CGContextAddPath(context, path);
//开始填充
CGContextFillPath(context);
//释放路径
CGPathRelease(path);
}
在6视图里引用
//添加画圆视图..
CircleView *circleView;设置为成员变量
circleView=[[CircleViewalloc]initWithFrame:CGRectMake(170,CGRectGetMidY(middleView.bounds), 25, 25)];
circleView.backgroundColor=[UIColorclearColor];
[middleView addSubview: circleView];
#pragma mark -私有方法,拖动滑块的时候触发
-(void)lineWidthFromSlider:(UISlider *)slider
{
circleView.radius=slider.value;
}
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