A simple and elegant LineChart and pieChart library with rich animations. More type of charts will come not long after.
WYLineChart
Make it easy to create a line chart, Scrollable, Pinchable, Animatable
WYPieChart
Make it easy to create a Pie chart, Rotatable, Draggable, Selectable, Animatable
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WYChart works on iOS7+, compatible with ARC. Some Framework are required, as follow:
- Foundation.framework
- UIKit.framework
- QuartzCore.framework
- CoreGraphic.framework
The frameworks above always included in most xcode project.
WYChart is available under the MIT license. See the LICENSE file for more info.
The Project included a demo showing the tow chart and the code that how to use the chart with properties and methods.In perticalculer, there are setting pages for two charts which you can change the property and see what changed.
To run the example project, clone the repo, and run pod install
from the Example directory first.
The demo page shows follow:
Main Table
Pie Chart Setting Page
Line Chart Setting Page
WYChart is available through CocoaPods. To install it, simply add the following line to your Podfile:
pod "WYChart"
To install WYChart in you project, just add the following line to you podfile
:
pod 'WYChart'
then run following line in terminal:
pod install
Just dragging the WYChart floder in your download project into you own project.
WYChart design the interface like most Controls in UIKit.framework, such as UITableView, UICollection, you have to implemente the required delegate and dataSource method, and setting some essential property.
####First of all
Add the following line to you .h
or .m
file where you use the chart:
#import "WYLineChart.h"
or
#import "WYPieChart.h"
The follow lines will show you how to initialize WYLineChart and WYPieChart in different way.
First, and following line to follow WYLineChartViewDelegate and WYLineChartViewDataSource:
@interface SomeViewController () <WYLineChartViewDelegate, WYLineChartViewDatasource>
Second, initilize instance for WYLineChartView:
_chartView = [[WYLineChartView alloc] initWithFrame:frame];
_chartView.delegate = self;
_chartView.datasource = self;
Third, set the line chart data array, which contained numbers of WYLineChartPoint:
WYLineChartPoint *point = [[WYLineChartPoint alloc] init];
point.value = 50503.134;
[container addObject:point];
point = [[WYLineChartPoint alloc] init];
point.value = 60623.4;
[container addObject:point];
...
_chartView.points = [NSArray arrayWithArray:_points];
Finally, add chart to controller`s view and update line chart:
[self.view addSubview:_chartView];
[_chartView updateGraph];
Besides, you have to implement the required methods of delegate and dataSource:
Delegate
- (NSInteger)numberOfLabelOnXAxisInLineChartView:(WYLineChartView *)chartView
- (CGFloat)gapBetweenPointsHorizontalInLineChartView:(WYLineChartView *)chartView
- (CGFloat)maxValueForPointsInLineChartView:(WYLineChartView *)chartView
- (CGFloat)minValueForPointsInLineChartView:(WYLineChartView *)chartView
DataSource
- (NSString *)lineChartView:(WYLineChartView *)chartView contentTextForXAxisLabelAtIndex:(NSInteger)index
- (WYLineChartPoint *)lineChartView:(WYLineChartView *)chartView pointReferToXAxisLabelAtIndex:(NSInteger)index
The jobs above is not enough, there are a lot of optional property for you to config the appearence and interaction of line chart.
Gradient Foreground
To make the line chart more elegant, you can choose to add gradient foreground for it, add the following lines:
_chartView.gradientColors = @[[UIColor colorWithWhite:1.0 alpha:0.9],
[UIColor colorWithWhite:1.0 alpha:0.0]];
_chartView.gradientColorsLocation = @[@(0.0), @(0.95)];
_chartView.drawGradient = YES;
That will show you a gradient foreground as following:
Gradient Foreground
Otherwise:
Without Gradient Foreground
Scrollabel
WYLineChart support you to scroll to chart horizontally, just add the simple line following:
_chartView.scrollable = YES;
Then, you can scroll the chart:
Scroll Chart
Pinchable
You can also add the following line:
_chartView.pinchable = YES;
to make the chart pinchable, that`s useful when you want to scale the data grade for chart to show, you can pinch out or pinch in to reload data, and the method - (void)lineChartView:didEndedPinchGraphWithOption:
will be notified, in which you can reset the data array and update the chart.
Line Style
WYLineChart supports three line style:
kWYLineChartMainStraightLine,
kWYLineChartMainBezierWaveLine,
kWYLineChartMainBezierTaperLine
and if you do not want a line while just some point, you can choose kWYLineChartMainNoneLine
Wave Style
Straight Style
Tapper Style
None Line
Animation Style
There are several animation for chart:
kWYLineChartAnimationDrawing,
kWYLineChartAnimationAlpha,
kWYLineChartAnimationWidth,
kWYLineChartAnimationRise,
kWYLineChartAnimationSpring,
kWYLineChartNoneAnimation
For example, kWYLineChartAnimationDrawing
show as:
Drawing Animation
and kWYLineChartAnimationSpring
show as:
Spring Animation
Junction Style
You can choose a junction style bellowing:
kWYLineChartJunctionShapeNone,
kWYLineChartJunctionShapeSolidCircle,
kWYLineChartJunctionShapeHollowCircle,
kWYLineChartJunctionShapeSolidSquare,
kWYLineChartJunctionShapeHollowSquare,
kWYLineChartJunctionShapeSolidRectangle,
kWYLineChartJunctionShapeHollowRectangle,
kWYLineChartJunctionShapeSolidStar,
kWYLineChartJunctionShapeHollowStar
For example, kWYLineChartJunctionShapeHollowRectangle
will show as:
Hollow Rectangle
Touch Point/Line
WYLineChart containe a long press gesture for a point to show where you touch on the line, and will return the point by the delegate method bellow:
- (void)lineChartView:didBeganTouchAtSegmentOfPoint:value:
- (void)lineChartView:didMovedTouchToSegmentOfPoint:value:
- (void)lineChartView:didEndedTouchToSegmentOfPoint:value:
Touch Point
There`re numbers of feature in WYLineChart, if you are intrested in it, see the interface.
First, and following line to follow WYPieChartViewDelegate and WYPieChartViewDataSource:
@interface SomeViewController () <WYLineChartViewDelegate, WYLineChartViewDatasource>
Second, initilize instance for WYPieChartView:
_pieView = [[WYPieChartView alloc] initWithFrame:CGRectMake(0, 70, self.view.wy_boundsWidth, 300)];
_pieView.delegate = self;
_pieView.datasource = self;
Third, set the pie chart data array, which contained numbers of pie`s value:
_pieView.values = @[@50, @200, @40, @300, @100];
Finally, add chart to controller`s view and update pie chart:
[self.view addSubview:_pieView];
[_pieView update];
Besides, colors for sector is required by dataSource method - (UIColor *)pieChartView:sectorColorAtIndex:
, you have to implement that method to dye your pieChart.
Like WYLineChart, there are also number of optional property for you to config the appearence and interaction of line chart.
Pie Style
You can choose style between kWYPieChartNormalStyle
and kWYPieChartGearStyle
, as showing below:
Normal Pie Style
Gear Pie Style
Just add the following line when you initialize the pie chart:
_pieView.style = kWYPieChartNormalStyle/kWYPieChartGearStyle;
Rotatable
If you want the pie chart to be more interactable, you can add the code below:
_pieView.rotatable = YES;
to make it rotatable.
Pie Chart Rotatable
Selected
WYPieChart support you to select the sectors with two types of animation, and will call back to the delegate method pieChartView:didSelectedSectorAtIndex:
when you selecting, you can choose selected type between kWYPieChartSectorSelectedExtraction
and kWYPieChartSectorSelectedPull
as below:
_pieView.selectedStyle = kWYPieChartSectorSelectedExtraction;
Extraction Style
Pull Style
Animation Style
Six styles of animation you can choose to animation the pie chart when reloading:
kWYPieChartAnimationOrderlySpreading,
kWYPieChartAnimationAllSpreading,
kWYPieChartAnimationStretching,
kWYPieChartAnimationAlpha,
kWYPieChartAnimationScale
For example, kWYPieChartAnimationAllSpreading
style will show as below:
All Spreading Style
You can select the other animation styles to see what it perform in the demo.
Inner Circle
The property showInnerCircle
is define should a empty circle draw in the chart, which you can add a label on it, such as a sum label.
Inner Circle
Gradient
The fillByGradient
property default is NO, if you set it to YES, every sector will fill by gradient.
Gradient Fill
Some other feature also include in WYPieChart, you can find them in PieChartView.h
##Contact
If you have any problem or got an idear, i will be glad if share them to me by a #issue
or [email protected], and this my personal blog where you can find some technology about WYChart or any other topics.