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//
// HTViewController.m
// CorePlotProgram
//
// Created by wb-shangguanhaitao on 14-2-27.
// Copyright (c) 2014年 shangguan. All rights reserved.
//
#import "HTViewController.h"
#import "CorePlot-CocoaTouch.h"
@interface HTViewController ()<CPTTradingRangePlotDataSource>
/**
* plotData ohlc 数据
*/
@property (nonatomic, strong) NSMutableArray *plotData;
/**
* 生成plotData数据
*/
-(void)generateData;
/**
* 设置图表绘制的配置
*/
- (void)setupCoreplotViews;
@end
@implementation HTViewController
#pragma mark - Superclass API
- (void)viewDidLoad
{
[super viewDidLoad];
[self setupCoreplotViews];
// Do any additional setup after loading the view.
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark - Private API
-(void)generateData
{
if ( !self.plotData ) {
NSMutableArray *newData = [NSMutableArray array];
for ( NSUInteger i = 0; i < 4; i++ ) {
NSTimeInterval x = 1 * i + 1;
double rOpen = 3.0 * rand() / (double)RAND_MAX + 1.0;
double rClose = (rand() / (double)RAND_MAX - 0.5) * 0.5 + rOpen;
double rHigh;
double rLow;
// double rHigh = MAX( rOpen, MAX(rClose, (rand() / (double)RAND_MAX - 0.5) * 0.5 + rOpen) );
// double rLow = MIN( rOpen, MIN(rClose, (rand() / (double)RAND_MAX - 0.5) * 0.5 + rOpen) );
if (rOpen > rClose)
{
rHigh = rOpen + 0.2;
rLow = rClose - 0.2;
}
if (rOpen < rClose)
{
rLow = rOpen - 0.2;
rHigh = rClose + 0.2;
}
[newData addObject:
[NSDictionary dictionaryWithObjectsAndKeys:
[NSDecimalNumber numberWithDouble:x], [NSNumber numberWithInt:CPTTradingRangePlotFieldX],
[NSDecimalNumber numberWithDouble:rOpen], [NSNumber numberWithInt:CPTTradingRangePlotFieldOpen],
[NSDecimalNumber numberWithDouble:rHigh], [NSNumber numberWithInt:CPTTradingRangePlotFieldHigh],
[NSDecimalNumber numberWithDouble:rLow], [NSNumber numberWithInt:CPTTradingRangePlotFieldLow],
[NSDecimalNumber numberWithDouble:rClose], [NSNumber numberWithInt:CPTTradingRangePlotFieldClose],
nil]];
}
self.plotData = newData;
}
}
- (void)setupCoreplotViews
{
CPTXYGraph *graph = [[CPTXYGraph alloc] initWithFrame:CGRectZero];
CPTTheme *theme = [CPTTheme themeNamed:kCPTStocksTheme];
[graph applyTheme:theme];
graph.paddingTop = 0.0f;
graph.paddingLeft = 0.0f;
graph.paddingBottom = 0.0f;
graph.paddingRight = 0.0f;
graph.plotAreaFrame.paddingTop = 50.0f;
graph.plotAreaFrame.paddingLeft = 40.0f;
graph.plotAreaFrame.paddingBottom = 50.0f;
graph.plotAreaFrame.paddingRight = 40.0f;
graph.plotAreaFrame.cornerRadius = 0.0f;
CPTXYPlotSpace *space = (CPTXYPlotSpace *)graph.defaultPlotSpace;
space.xRange = [CPTPlotRange plotRangeWithLocation:CPTDecimalFromFloat(0.0f) length:CPTDecimalFromFloat(5.0f)];
space.yRange = [CPTPlotRange plotRangeWithLocation:CPTDecimalFromFloat(0.0f) length:CPTDecimalFromFloat(4.0f)];
[self generateData];
CPTMutableLineStyle *lineStyle = [CPTMutableLineStyle lineStyle];
lineStyle.lineColor = [CPTColor whiteColor];
lineStyle.lineWidth = 2.0f;
CPTTradingRangePlot *tradingRangePlot = [[CPTTradingRangePlot alloc] init];
tradingRangePlot.plotStyle = CPTTradingRangePlotStyleCandleStick;
tradingRangePlot.lineStyle = lineStyle;
tradingRangePlot.dataSource = self;
[graph addPlot:tradingRangePlot];
//...
CPTGraphHostingView *hostingView = [[CPTGraphHostingView alloc] initWithFrame:self.view.bounds];
hostingView.hostedGraph = graph;
[self.view addSubview:hostingView];
}
#pragma mark - CPTTradingRangePlotDataSource API
-(NSUInteger)numberOfRecordsForPlot:(CPTPlot *)plot
{
return [self.plotData count];
}
-(NSNumber *)numberForPlot:(CPTPlot *)plot field:(NSUInteger)fieldEnum recordIndex:(NSUInteger)idx
{
switch (fieldEnum)
{
case CPTTradingRangePlotFieldX:
return [[self.plotData objectAtIndex:idx] objectForKey:[NSNumber numberWithInt:CPTTradingRangePlotFieldX]];
break;
case CPTTradingRangePlotFieldOpen:
return [[self.plotData objectAtIndex:idx] objectForKey:[NSNumber numberWithInt:CPTTradingRangePlotFieldOpen]];
break;
case CPTTradingRangePlotFieldHigh:
return [[self.plotData objectAtIndex:idx] objectForKey:[NSNumber numberWithInt:CPTTradingRangePlotFieldHigh]];
break;
case CPTTradingRangePlotFieldLow:
return [[self.plotData objectAtIndex:idx] objectForKey:[NSNumber numberWithInt:CPTTradingRangePlotFieldLow]];
break;
case CPTTradingRangePlotFieldClose:
return [[self.plotData objectAtIndex:idx] objectForKey:[NSNumber numberWithInt:CPTTradingRangePlotFieldClose]];
break;
default:
return [NSNumber numberWithDouble:0.0];
break;
}
}
@end