Merge branch 'master1'

@@ -157,7 +157,7 @@ displayCountingLabel:(BOOL)displayCountingLabel
     [_circle addAnimation:pathAnimation forKey:@"strokeEndAnimation"];
     _circle.strokeEnd   = [_current floatValue] / [_total floatValue];
 
-    [_countingLabel countFrom:0 to:[_current floatValue] withDuration:self.duration];
+    [_countingLabel countFrom:0 to:[_current floatValue]/([_total floatValue]/100.0) withDuration:self.duration];
 
 
     // Check if user wants to add a gradient from the start color to the bar color

@@ -104,6 +104,20 @@
     }
 }
 
+- (CGFloat)computeEqualWidthForXLabels:(NSArray *)xLabels
+{
+    CGFloat xLabelWidth;
+
+    if (_showLabel) {
+        xLabelWidth = _chartCavanWidth / [xLabels count];
+    } else {
+        xLabelWidth = (self.frame.size.width) / [xLabels count];
+    }
+
+    return xLabelWidth;
+}
+
+
 - (void)setXLabels:(NSArray *)xLabels
 {
     CGFloat xLabelWidth;

@@ -12,9 +12,8 @@
 
 @interface PNPieChart()
 
-@property (nonatomic, readwrite) NSArray	*items;
-@property (nonatomic) CGFloat total;
-@property (nonatomic) CGFloat currentTotal;
+@property (nonatomic) NSArray *items;
+@property (nonatomic) NSArray *endPercentages;
 
 @property (nonatomic) CGFloat outerCircleRadius;
 @property (nonatomic) CGFloat innerCircleRadius;
@@ -23,10 +22,14 @@
 @property (nonatomic) CAShapeLayer   *pieLayer;
 @property (nonatomic) NSMutableArray *descriptionLabels;
 
+
 - (void)loadDefault;
 
 - (UILabel *)descriptionLabelForItemAtIndex:(NSUInteger)index;
 - (PNPieChartDataItem *)dataItemForIndex:(NSUInteger)index;
+- (CGFloat)startPercentageForItemAtIndex:(NSUInteger)index;
+- (CGFloat)endPercentageForItemAtIndex:(NSUInteger)index;
+- (CGFloat)ratioForItemAtIndex:(NSUInteger)index;
 
 - (CAShapeLayer *)newCircleLayerWithRadius:(CGFloat)radius
                                borderWidth:(CGFloat)borderWidth
@@ -45,8 +48,8 @@
     self = [self initWithFrame:frame];
     if(self){
         _items = [NSArray arrayWithArray:items];
-		_outerCircleRadius = CGRectGetWidth(self.bounds)/2;
-		_innerCircleRadius  = CGRectGetWidth(self.bounds)/6;
+        _outerCircleRadius  = CGRectGetWidth(self.bounds) / 2;
+        _innerCircleRadius  = CGRectGetWidth(self.bounds) / 6;
         
         _descriptionTextColor = [UIColor whiteColor];
         _descriptionTextFont  = [UIFont fontWithName:@"Avenir-Medium" size:18.0];
@@ -60,15 +63,23 @@
     return self;
 }
 
-
 - (void)loadDefault{
-	_currentTotal = 0;
-	_total       = 0;
+    __block CGFloat currentTotal = 0;
+    CGFloat total = [[self.items valueForKeyPath:@"@sum.value"] floatValue];
+    NSMutableArray *endPercentages = [NSMutableArray new];
+    [_items enumerateObjectsUsingBlock:^(PNPieChartDataItem *item, NSUInteger idx, BOOL *stop) {
+        if (total == 0){
+            [endPercentages addObject:@(1.0 / _items.count * (idx + 1))];
+        }else{
+            currentTotal += item.value;
+            [endPercentages addObject:@(currentTotal / total)];
+        }
+    }];
+    self.endPercentages = [endPercentages copy];
     
     [_contentView removeFromSuperview];
     _contentView = [[UIView alloc] initWithFrame:self.bounds];
     [self addSubview:_contentView];
-    [_descriptionLabels removeAllObjects];
     _descriptionLabels = [NSMutableArray new];
     
     _pieLayer = [CAShapeLayer layer];
@@ -80,39 +91,30 @@
 - (void)strokeChart{
     [self loadDefault];
     
-	[self.items enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
-		_total +=((PNPieChartDataItem *)obj).value;
-	}];
-	
     PNPieChartDataItem *currentItem;
-	CGFloat currentValue = 0;
     for (int i = 0; i < _items.count; i++) {
         currentItem = [self dataItemForIndex:i];
         
         
-		CGFloat startPercnetage = currentValue/_total;
-		CGFloat endPercentage   = (currentValue + currentItem.value)/_total;
+        CGFloat startPercnetage = [self startPercentageForItemAtIndex:i];
+        CGFloat endPercentage   = [self endPercentageForItemAtIndex:i];
         
-		CAShapeLayer *currentPieLayer =	[self newCircleLayerWithRadius:_innerCircleRadius + (_outerCircleRadius - _innerCircleRadius)/2
-                                                           borderWidth:_outerCircleRadius - _innerCircleRadius
+        CGFloat radius = _innerCircleRadius + (_outerCircleRadius - _innerCircleRadius) / 2;
+        CGFloat borderWidth = _outerCircleRadius - _innerCircleRadius;
+        CAShapeLayer *currentPieLayer =	[self newCircleLayerWithRadius:radius
+                                                           borderWidth:borderWidth
                                                              fillColor:[UIColor clearColor]
                                                            borderColor:currentItem.color
                                                        startPercentage:startPercnetage
                                                          endPercentage:endPercentage];
         [_pieLayer addSublayer:currentPieLayer];
-		
-		currentValue+=currentItem.value;
-		
     }
     
     [self maskChart];
     
-	currentValue = 0;
     for (int i = 0; i < _items.count; i++) {
-		currentItem = [self dataItemForIndex:i];
         UILabel *descriptionLabel =  [self descriptionLabelForItemAtIndex:i];
         [_contentView addSubview:descriptionLabel];
-		currentValue+=currentItem.value;
         [_descriptionLabels addObject:descriptionLabel];
     }
 }
@@ -120,11 +122,9 @@
 - (UILabel *)descriptionLabelForItemAtIndex:(NSUInteger)index{
     PNPieChartDataItem *currentDataItem = [self dataItemForIndex:index];
     CGFloat distance = _innerCircleRadius + (_outerCircleRadius - _innerCircleRadius) / 2;
-    CGFloat centerPercentage =(_currentTotal + currentDataItem.value /2 ) / _total;
+    CGFloat centerPercentage = ([self startPercentageForItemAtIndex:index] + [self endPercentageForItemAtIndex:index])/ 2;
     CGFloat rad = centerPercentage * 2 * M_PI;
     
-	_currentTotal += currentDataItem.value;
-	
     UILabel *descriptionLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 100, 80)];
     NSString *titleText = currentDataItem.textDescription;
     NSString *titleValue;
@@ -141,14 +141,14 @@
         NSString* str = [titleValue stringByAppendingString:[NSString stringWithFormat:@"\n%@",titleText]];
         descriptionLabel.text = str ;
     }
+    descriptionLabel.text = titleText;
     
     CGPoint center = CGPointMake(_outerCircleRadius + distance * sin(rad),
                                  _outerCircleRadius - distance * cos(rad));
     
     descriptionLabel.font = _descriptionTextFont;
     CGSize labelSize = [descriptionLabel.text sizeWithAttributes:@{NSFontAttributeName:descriptionLabel.font}];
-    descriptionLabel.frame = CGRectMake(
-                             descriptionLabel.frame.origin.x, descriptionLabel.frame.origin.y,
+    descriptionLabel.frame = CGRectMake(descriptionLabel.frame.origin.x, descriptionLabel.frame.origin.y,
                                         descriptionLabel.frame.size.width, labelSize.height);
     descriptionLabel.numberOfLines   = 0;
     descriptionLabel.textColor       = _descriptionTextColor;
@@ -165,6 +165,22 @@
     return self.items[index];
 }
 
+- (CGFloat)startPercentageForItemAtIndex:(NSUInteger)index{
+    if(index == 0){
+        return 0;
+    }
+    
+    return [_endPercentages[index - 1] floatValue];
+}
+
+- (CGFloat)endPercentageForItemAtIndex:(NSUInteger)index{
+    return [_endPercentages[index] floatValue];
+}
+
+- (CGFloat)ratioForItemAtIndex:(NSUInteger)index{
+    return [self endPercentageForItemAtIndex:index] - [self startPercentageForItemAtIndex:index];
+}
+
 #pragma mark private methods
 
 - (CAShapeLayer *)newCircleLayerWithRadius:(CGFloat)radius
@@ -190,13 +206,14 @@
     circle.lineWidth   = borderWidth;
     circle.path        = path.CGPath;
     
-	
     return circle;
 }
 
 - (void)maskChart{
-	CAShapeLayer *maskLayer =	[self newCircleLayerWithRadius:_innerCircleRadius + (_outerCircleRadius - _innerCircleRadius)/2
-                                                 borderWidth:_outerCircleRadius - _innerCircleRadius
+    CGFloat radius = _innerCircleRadius + (_outerCircleRadius - _innerCircleRadius) / 2;
+    CGFloat borderWidth = _outerCircleRadius - _innerCircleRadius;
+    CAShapeLayer *maskLayer = [self newCircleLayerWithRadius:radius
+                                                 borderWidth:borderWidth
                                                    fillColor:[UIColor clearColor]
                                                  borderColor:[UIColor blackColor]
                                              startPercentage:0
@@ -213,13 +230,16 @@
     [maskLayer addAnimation:animation forKey:@"circleAnimation"];
 }
 
-- (void)createArcAnimationForLayer:(CAShapeLayer *)layer ForKey:(NSString *)key fromValue:(NSNumber *)from toValue:(NSNumber *)to Delegate:(id)delegate
-{
+- (void)createArcAnimationForLayer:(CAShapeLayer *)layer
+                            forKey:(NSString *)key
+                         fromValue:(NSNumber *)from
+                           toValue:(NSNumber *)to
+                          delegate:(id)delegate{
     CABasicAnimation *arcAnimation = [CABasicAnimation animationWithKeyPath:key];
     arcAnimation.fromValue         = @0;
-	[arcAnimation setToValue:to];
-	[arcAnimation setDelegate:delegate];
-	[arcAnimation setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionDefault]];
+    arcAnimation.toValue           = to;
+    arcAnimation.delegate          = delegate;
+    arcAnimation.timingFunction    = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionDefault];
     [layer addAnimation:arcAnimation forKey:key];
     [layer setValue:to forKey:key];
 }

@@ -27,4 +27,11 @@
 	return item;
 }
 
+- (void)setValue:(CGFloat)value{
+    NSAssert(value >= 0, @"value should >= 0");
+    if (value != _value){
+        _value = value;
+    }
+}
+
 @end

@@ -156,6 +156,24 @@
     }
 }
 
+- (NSArray*) getAxisMinMax:(NSArray*)xValues
+{
+    float min = [xValues[0] floatValue];
+    float max = [xValues[0] floatValue];
+    for (NSNumber *number in xValues)
+    {
+        if ([number floatValue] > max)
+            max = [number floatValue];
+        
+        if ([number floatValue] < min)
+            min = [number floatValue];
+    }
+    NSArray *result = @[[NSNumber numberWithFloat:min], [NSNumber numberWithFloat:max]];
+   
+    
+    return result;
+}
+
 - (void)setAxisXLabel:(NSArray *)array {
     if(array.count == ++_AxisX_partNumber){
         [_axisX_labels removeAllObjects];