Updated change log, pod spec and read me

CHANGELOG.md

@@ -1,12 +1,29 @@
 # Changelog
 
+## <a href="https://github.com/Jawbone/JBChartView/tree/v2.1.3">2.1.3</a> 
+#### 04/03/14
+- Added the ability to force a chart's state. 
+
+## <a href="https://github.com/Jawbone/JBChartView/tree/v2.1.2">2.1.2</a> 
+#### 04/02/14
+- Added dynamic padding to JBLineChartView (based on max line width).
+
+## <a href="https://github.com/Jawbone/JBChartView/tree/v2.1.1">2.1.1</a> 
+#### 04/02/14
+- Fixed minimumValue and maximumValue getter functions.
+
+## <a href="https://github.com/Jawbone/JBChartView/tree/v2.1.0">2.1.0</a> 
+#### 03/30/14
+- Added minimumValue and maximumValue properties. 
+- Changed default min value implementation from 0 to chart's actual minimum value.
+
 ## <a href="https://github.com/Jawbone/JBChartView/tree/v2.0.2">2.0.2</a> 
 #### 03/27/14
 - Added the ability to add point dots for lines in JBLineChartView.
 - Streamlined line styling. 
 
 ## <a href="https://github.com/Jawbone/JBChartView/tree/v2.0.1">2.0.1</a> 
-### 03/19/14
+#### 03/19/14
 - Fixes issue <a href="https://github.com/Jawbone/JBChartView/pull/22">#22</a>.
 
 ## <a href="https://github.com/Jawbone/JBChartView/tree/v2.0.0">2.0.0</a> 

Classes/JBBarChartView.m

@@ -10,7 +10,7 @@
 
 // Numerics
 CGFloat static const kJBBarChartViewBarBasePaddingMutliplier = 50.0f;
-CGFloat static const kJBBarChartViewUndefinedMaxHeight = -1.0f;
+CGFloat static const kJBBarChartViewUndefinedCachedHeight = -1.0f;
 CGFloat static const kJBBarChartViewStateAnimationDuration = 0.05f;
 CGFloat static const kJBBarChartViewPopOffset = 10.0f; // used to offset bars for 'pop' animations
 NSInteger static const kJBBarChartViewUndefinedBarIndex = -1;
@@ -24,6 +24,7 @@ static UIColor *kJBBarChartViewDefaultBarColor = nil;
 @property (nonatomic, strong) NSArray *barViews;
 @property (nonatomic, assign) CGFloat barPadding;
 @property (nonatomic, assign) CGFloat cachedMaxHeight;
+@property (nonatomic, assign) CGFloat cachedMinHeight;
 @property (nonatomic, strong) JBChartVerticalSelectionView *verticalSelectionView;
 @property (nonatomic, assign) BOOL verticalSelectionViewVisible;
 
@@ -33,8 +34,8 @@ static UIColor *kJBBarChartViewDefaultBarColor = nil;
 // View quick accessors
 - (CGFloat)availableHeight;
 - (CGFloat)normalizedHeightForRawHeight:(NSNumber*)rawHeight;
-- (CGFloat)maxHeight;
 - (CGFloat)minHeight;
+- (CGFloat)maxHeight;
 - (CGFloat)barWidth;
 - (CGFloat)popOffset;
 
@@ -94,7 +95,8 @@ static UIColor *kJBBarChartViewDefaultBarColor = nil;
 - (void)construct
 {
     _showsVerticalSelection = YES;
-    _cachedMaxHeight = kJBBarChartViewUndefinedMaxHeight;
+    _cachedMinHeight = kJBBarChartViewUndefinedCachedHeight;
+    _cachedMaxHeight = kJBBarChartViewUndefinedCachedHeight;
 }
 
 #pragma mark - Memory Management
@@ -109,7 +111,8 @@ static UIColor *kJBBarChartViewDefaultBarColor = nil;
 - (void)reloadData
 {
     // reset cached max height
-    self.cachedMaxHeight = kJBBarChartViewUndefinedMaxHeight;
+    self.cachedMinHeight = kJBBarChartViewUndefinedCachedHeight;
+    self.cachedMaxHeight = kJBBarChartViewUndefinedCachedHeight;
     
     /*
      * The data collection holds all position information:
@@ -235,6 +238,9 @@ static UIColor *kJBBarChartViewDefaultBarColor = nil;
     // Position header and footer
     self.headerView.frame = CGRectMake(self.bounds.origin.x, self.bounds.origin.y, self.bounds.size.width, self.headerView.frame.size.height);
     self.footerView.frame = CGRectMake(self.bounds.origin.x, self.bounds.size.height - self.footerView.frame.size.height, self.bounds.size.width, self.footerView.frame.size.height);
+
+    // Refresh state
+    [self setState:self.state animated:NO callback:nil force:YES];
 }
 
 #pragma mark - View Quick Accessors
@@ -258,20 +264,22 @@ static UIColor *kJBBarChartViewDefaultBarColor = nil;
     return ((value - minHeight) / (maxHeight - minHeight)) * [self availableHeight];
 }
 
-- (CGFloat)maxHeight
-{
-    if (self.cachedMaxHeight == kJBBarChartViewUndefinedMaxHeight)
-    {
-        // max height is max value across all goals and values
-        NSArray *chartValues = [[[self.chartDataDictionary allValues] arrayByAddingObjectsFromArray:[self.chartDataDictionary allValues]] sortedArrayUsingSelector:@selector(compare:)];
-        self.cachedMaxHeight =  [[chartValues lastObject] floatValue];
-    }
-    return self.cachedMaxHeight;
-}
-
 - (CGFloat)minHeight
 {
-    return 0;
+    if (self.mininumValue != kJBChartViewUndefinedMinimumValue)
+    {
+        return MIN(self.mininumValue, self.cachedMinHeight);
+    }
+    return self.cachedMinHeight;
+}
+
+- (CGFloat)maxHeight
+{
+    if (self.maximumValue != kJBChartViewUndefinedMaximumValue)
+    {
+        return MAX(self.maximumValue, self.cachedMaxHeight);
+    }
+    return self.cachedMaxHeight;
 }
 
 - (CGFloat)barWidth
@@ -293,9 +301,9 @@ static UIColor *kJBBarChartViewDefaultBarColor = nil;
 
 #pragma mark - Setters
 
-- (void)setState:(JBChartViewState)state animated:(BOOL)animated callback:(void (^)())callback
+- (void)setState:(JBChartViewState)state animated:(BOOL)animated callback:(void (^)())callback force:(BOOL)force
 {
-    [super setState:state animated:animated callback:callback];
+    [super setState:state animated:animated callback:callback force:force];
     
     dispatch_block_t callbackCopy = [callback copy];
     
@@ -350,7 +358,7 @@ static UIColor *kJBBarChartViewDefaultBarColor = nil;
             {
                 callbackCopy();
             }
-        }   
+        }
     }
     else
     {
@@ -361,6 +369,53 @@ static UIColor *kJBBarChartViewDefaultBarColor = nil;
     }
 }
 
+- (void)setState:(JBChartViewState)state animated:(BOOL)animated callback:(void (^)())callback
+{
+    [self setState:state animated:animated callback:callback force:NO];
+}
+
+#pragma mark - Getters
+
+- (CGFloat)cachedMinHeight
+{
+    if(_cachedMinHeight == kJBBarChartViewUndefinedCachedHeight)
+    {
+        // min height is min value across all goals and values
+        NSArray *chartValues = [[[self.chartDataDictionary allValues] arrayByAddingObjectsFromArray:[self.chartDataDictionary allValues]] sortedArrayUsingSelector:@selector(compare:)];
+        _cachedMinHeight =  [[chartValues firstObject] floatValue];
+    }
+    return _cachedMinHeight;
+}
+
+- (CGFloat)cachedMaxHeight
+{
+    if (_cachedMaxHeight == kJBBarChartViewUndefinedCachedHeight)
+    {
+        // max height is max value across all goals and values
+        NSArray *chartValues = [[[self.chartDataDictionary allValues] arrayByAddingObjectsFromArray:[self.chartDataDictionary allValues]] sortedArrayUsingSelector:@selector(compare:)];
+        _cachedMaxHeight =  [[chartValues lastObject] floatValue];
+    }
+    return _cachedMaxHeight;
+}
+
+- (CGFloat)mininumValue
+{
+    if ([super mininumValue] == kJBChartViewUndefinedMinimumValue)
+    {
+        return self.cachedMinHeight;
+    }
+    return [super mininumValue];
+}
+
+- (CGFloat)maximumValue
+{
+    if ([super maximumValue] == kJBChartViewUndefinedMaximumValue)
+    {
+        return self.cachedMaxHeight;
+    }
+    return [super maximumValue];
+}
+
 #pragma mark - Touch Helpers
 
 - (NSInteger)barViewIndexForPoint:(CGPoint)point

Classes/JBChartView.h

@@ -9,6 +9,8 @@
 #import <Foundation/Foundation.h>
 
 extern CGFloat const kJBChartViewDefaultAnimationDuration;
+extern CGFloat const kJBChartViewUndefinedMinimumValue; // helper for undefined min/max values
+extern CGFloat const kJBChartViewUndefinedMaximumValue;
 
 /**
  * At a minimum, a chart can support two states, along with animations to-and-from.
@@ -39,6 +41,19 @@ typedef NS_ENUM(NSInteger, JBChartViewState){
  */
 @property (nonatomic, assign) CGFloat headerPadding;
 
+/**
+ *  The minimum and maxmimum values of the chart. 
+ *  If no value(s) are supplied, the min and max values of the chart's data source are used.
+ *
+ *  If value(s) are supplied, they must be >= 0, otherwise an assertion will be thrown. 
+ *  The min/max values are clamped to the ceiling and floor of the actual min/max values of the chart's data source;
+ *  for example, if a maximumValue of 20 is supplied & the chart's actual max is 100, then 100 will be used.
+ *
+ *  For min/max modifications to take effect, reloadData must be called.
+ */
+@property (nonatomic, assign) CGFloat mininumValue;
+@property (nonatomic, assign) CGFloat maximumValue;
+
 /**
  *  Charts can either be expanded or contracted. 
  *  By default, a chart should be expanded on initialization.
@@ -51,6 +66,16 @@ typedef NS_ENUM(NSInteger, JBChartViewState){
  */
 - (void)reloadData;
 
+/**
+ *  State setter.
+ *
+ *  @param state        Either collapse or expanded.
+ *  @param animated     Whether or not the state should be animated or not.
+ *  @param callback     Called once the animation is completed. If animated == NO, then callback is immediate.
+ *  @param force        If current state == new state, then setting force to YES will re-configure the chart (default NO).
+ */
+- (void)setState:(JBChartViewState)state animated:(BOOL)animated callback:(void (^)())callback force:(BOOL)force;
+
 /**
  *  State setter.
  *

Classes/JBChartView.m

@@ -9,6 +9,8 @@
 #import "JBChartView.h"
 
 CGFloat const kJBChartViewDefaultAnimationDuration = 0.25f;
+CGFloat const kJBChartViewUndefinedMinimumValue = -1.0f;
+CGFloat const kJBChartViewUndefinedMaximumValue = -1.0f;
 
 // Color (JBChartSelectionView)
 static UIColor *kJBChartVerticalSelectionViewDefaultBgColor = nil;
@@ -29,6 +31,8 @@ static UIColor *kJBChartVerticalSelectionViewDefaultBgColor = nil;
     if (self)
     {
         self.clipsToBounds = YES;
+        _mininumValue = kJBChartViewUndefinedMinimumValue;
+        _maximumValue = kJBChartViewUndefinedMaximumValue;
     }
     return self;
 }
@@ -86,9 +90,9 @@ static UIColor *kJBChartVerticalSelectionViewDefaultBgColor = nil;
     [self reloadData];
 }
 
-- (void)setState:(JBChartViewState)state animated:(BOOL)animated callback:(void (^)())callback
+- (void)setState:(JBChartViewState)state animated:(BOOL)animated callback:(void (^)())callback force:(BOOL)force
 {
-    if (_state == state)
+    if ((_state == state) && !force)
     {
         return;
     }
@@ -98,6 +102,11 @@ static UIColor *kJBChartVerticalSelectionViewDefaultBgColor = nil;
     // Override
 }
 
+- (void)setState:(JBChartViewState)state animated:(BOOL)animated callback:(void (^)())callback
+{
+    [self setState:state animated:animated callback:callback force:NO];
+}
+
 - (void)setState:(JBChartViewState)state animated:(BOOL)animated
 {
     [self setState:state animated:animated callback:nil];
@@ -108,6 +117,18 @@ static UIColor *kJBChartVerticalSelectionViewDefaultBgColor = nil;
     [self setState:state animated:NO];
 }
 
+- (void)setMininumValue:(CGFloat)mininumValue
+{
+    NSAssert(mininumValue >= 0, @"JBChartView // the minimumValue must be >= 0.");
+    _mininumValue = mininumValue;
+}
+
+- (void)setMaximumValue:(CGFloat)maximumValue
+{
+    NSAssert(maximumValue >= 0, @"JBChartView // the maximumValue must be >= 0.");
+    _maximumValue = maximumValue;
+}
+
 @end
 
 @implementation JBChartVerticalSelectionView

Classes/JBChartView.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name         = "JBChartView"
-  s.version      = "2.0.2"
+  s.version      = "2.1.3"
   s.summary      = "Jawbone's iOS-based charting library for both line and bar graphs."
   s.homepage     = "https://github.com/Jawbone/JBChartView"
 
@@ -8,7 +8,7 @@ Pod::Spec.new do |s|
   s.author       = { "Terry Worona" => "tworona@jawbone.com" }
   s.source       = { 
 	:git => "https://github.com/Jawbone/JBChartView.git",
-	:tag => "v2.0.2"
+	:tag => "v2.1.3"
   }
 
   s.platform     = :ios, '7.0'

Classes/JBLineChartView.m

@@ -19,7 +19,6 @@ typedef NS_ENUM(NSUInteger, JBLineChartHorizontalIndexClamp){
 };
 
 // Numerics (JBLineChartLineView)
-CGFloat static const kJBLineChartLinesViewEdgePadding = 10.0;
 CGFloat static const kJBLineChartLinesViewStrokeWidth = 5.0;
 CGFloat static const kJBLineChartLinesViewMiterLimit = -5.0;
 CGFloat static const kJBLineChartLinesViewDefaultLinePhase = 1.0f;
@@ -34,7 +33,7 @@ NSInteger static const kJBLineChartDotsViewUnselectedLineIndex = -1;
 CGFloat static const kJBLineSelectionViewWidth = 20.0f;
 
 // Numerics (JBLineChartView)
-CGFloat static const kJBLineChartViewUndefinedMaxHeight = -1.0f;
+CGFloat static const kJBBarChartViewUndefinedCachedHeight = -1.0f;
 CGFloat static const kJBLineChartViewStateAnimationDuration = 0.25f;
 CGFloat static const kJBLineChartViewStateAnimationDelay = 0.05f;
 CGFloat static const kJBLineChartViewStateBounceOffset = 15.0f;
@@ -88,6 +87,7 @@ static UIColor *kJBLineChartViewDefaultLineSelectionColor = nil;
 - (UIColor *)lineChartLinesView:(JBLineChartLinesView *)lineChartLinesView colorForLineAtLineIndex:(NSUInteger)lineIndex;
 - (UIColor *)lineChartLinesView:(JBLineChartLinesView *)lineChartLinesView selectedColorForLineAtLineIndex:(NSUInteger)lineIndex;
 - (CGFloat)lineChartLinesView:(JBLineChartLinesView *)lineChartLinesView widthForLineAtLineIndex:(NSUInteger)lineIndex;
+- (CGFloat)paddingForLineChartLinesView:(JBLineChartLinesView *)lineChartLinesView;
 - (JBLineChartViewLineStyle)lineChartLinesView:(JBLineChartLinesView *)lineChartLinesView lineStyleForLineAtLineIndex:(NSUInteger)lineIndex;
 - (BOOL)lineChartLinesView:(JBLineChartLinesView *)lineChartLinesView smoothLineAtLineIndex:(NSUInteger)lineIndex;
 
@@ -115,6 +115,7 @@ static UIColor *kJBLineChartViewDefaultLineSelectionColor = nil;
 - (UIColor *)lineChartDotsView:(JBLineChartDotsView *)lineChartDotsView colorForLineAtLineIndex:(NSUInteger)lineIndex;
 - (UIColor *)lineChartDotsView:(JBLineChartDotsView *)lineChartDotsView selectedColorForLineAtLineIndex:(NSUInteger)lineIndex;
 - (CGFloat)lineChartDotsView:(JBLineChartDotsView *)lineChartDotsView widthForLineAtLineIndex:(NSUInteger)lineIndex;
+- (CGFloat)paddingForLineChartDotsView:(JBLineChartDotsView *)lineChartDotsView;
 - (BOOL)lineChartDotsView:(JBLineChartDotsView *)lineChartDotsView showsDotsForLineAtLineIndex:(NSUInteger)lineIndex;
 
 @end
@@ -132,6 +133,7 @@ static UIColor *kJBLineChartViewDefaultLineSelectionColor = nil;
 @property (nonatomic, strong) JBLineChartDotsView *dotsView;
 @property (nonatomic, strong) JBChartVerticalSelectionView *verticalSelectionView;
 @property (nonatomic, assign) CGFloat cachedMaxHeight;
+@property (nonatomic, assign) CGFloat cachedMinHeight;
 @property (nonatomic, assign) BOOL verticalSelectionViewVisible;
 
 // Initialization
@@ -140,8 +142,9 @@ static UIColor *kJBLineChartViewDefaultLineSelectionColor = nil;
 // View quick accessors
 - (CGFloat)normalizedHeightForRawHeight:(CGFloat)rawHeight;
 - (CGFloat)availableHeight;
-- (CGFloat)maxHeight;
 - (CGFloat)minHeight;
+- (CGFloat)maxHeight;
+- (CGFloat)padding;
 - (NSUInteger)dataCount;
 
 // Touch helpers
@@ -205,15 +208,20 @@ static UIColor *kJBLineChartViewDefaultLineSelectionColor = nil;
 {
     _showsVerticalSelection = YES;
     _showsLineSelection = YES;
-    _cachedMaxHeight = kJBLineChartViewUndefinedMaxHeight;
+    _cachedMinHeight = kJBBarChartViewUndefinedCachedHeight;
+    _cachedMaxHeight = kJBBarChartViewUndefinedCachedHeight;
 }
 
 #pragma mark - Data
 
 - (void)reloadData
 {
-    // reset cached max height
-    self.cachedMaxHeight = kJBLineChartViewUndefinedMaxHeight;
+    // Reset cached max height
+    self.cachedMinHeight = kJBBarChartViewUndefinedCachedHeight;
+    self.cachedMaxHeight = kJBBarChartViewUndefinedCachedHeight;
+    
+    // Padding
+    CGFloat chartPadding = [self padding];
 
     /*
      * Subview rectangle calculations
@@ -226,8 +234,8 @@ static UIColor *kJBLineChartViewDefaultLineSelectionColor = nil;
      */
     dispatch_block_t createChartData = ^{
 
-        CGFloat pointSpace = (self.bounds.size.width - (kJBLineChartLinesViewEdgePadding * 2)) / ([self dataCount] - 1); // Space in between points
-        CGFloat xOffset = kJBLineChartLinesViewEdgePadding;
+        CGFloat pointSpace = (self.bounds.size.width - (chartPadding * 2)) / ([self dataCount] - 1); // Space in between points
+        CGFloat xOffset = chartPadding;
         CGFloat yOffset = 0;
        
         NSMutableArray *mutableChartData = [NSMutableArray array];
@@ -253,7 +261,7 @@ static UIColor *kJBLineChartViewDefaultLineSelectionColor = nil;
                 xOffset += pointSpace;
             }
             [mutableChartData addObject:chartPointData];
-            xOffset = kJBLineChartLinesViewEdgePadding;
+            xOffset = chartPadding;
         }
         self.chartData = [NSArray arrayWithArray:mutableChartData];
 	};
@@ -353,6 +361,9 @@ static UIColor *kJBLineChartViewDefaultLineSelectionColor = nil;
     // Position header and footer
     self.headerView.frame = CGRectMake(self.bounds.origin.x, self.bounds.origin.y, self.bounds.size.width, self.headerView.frame.size.height);
     self.footerView.frame = CGRectMake(self.bounds.origin.x, self.bounds.size.height - self.footerView.frame.size.height, self.bounds.size.width, self.footerView.frame.size.height);
+
+    // Refresh state
+    [self setState:self.state animated:NO callback:nil force:YES];
 }
 
 #pragma mark - View Quick Accessors
@@ -375,35 +386,41 @@ static UIColor *kJBLineChartViewDefaultLineSelectionColor = nil;
     return self.bounds.size.height - self.headerView.frame.size.height - self.footerView.frame.size.height - self.headerPadding;
 }
 
-- (CGFloat)maxHeight
+- (CGFloat)minHeight
 {
-    if (self.cachedMaxHeight == kJBLineChartViewUndefinedMaxHeight)
+    if (self.mininumValue != kJBChartViewUndefinedMinimumValue)
     {
-        CGFloat maxHeight = 0;
-        NSAssert([self.dataSource respondsToSelector:@selector(numberOfLinesInLineChartView:)], @"JBLineChartView // dataSource must implement - (NSUInteger)numberOfLinesInLineChartView:(JBLineChartView *)lineChartView");
-        for (NSUInteger lineIndex=0; lineIndex<[self.dataSource numberOfLinesInLineChartView:self]; lineIndex++)
-        {
-            NSAssert([self.dataSource respondsToSelector:@selector(lineChartView:numberOfVerticalValuesAtLineIndex:)], @"JBLineChartView // dataSource must implement - (NSUInteger)lineChartView:(JBLineChartView *)lineChartView numberOfVerticalValuesAtLineIndex:(NSUInteger)lineIndex");
-            NSUInteger dataCount = [self.dataSource lineChartView:self numberOfVerticalValuesAtLineIndex:lineIndex];
-            for (NSUInteger horizontalIndex=0; horizontalIndex<dataCount; horizontalIndex++)
-            {
-                NSAssert([self.delegate respondsToSelector:@selector(lineChartView:verticalValueForHorizontalIndex:atLineIndex:)], @"JBLineChartView // delegate must implement - (CGFloat)lineChartView:(JBLineChartView *)lineChartView verticalValueForHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex");
-                CGFloat height = [self.delegate lineChartView:self verticalValueForHorizontalIndex:horizontalIndex atLineIndex:lineIndex];
-                NSAssert(height >= 0, @"JBLineChartView // delegate function - (CGFloat)lineChartView:(JBLineChartView *)lineChartView verticalValueForHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex must return a CGFloat >= 0");
-                if (height > maxHeight)
-                {
-                    maxHeight = height;
-                }
-            }
-        }
-        self.cachedMaxHeight = maxHeight;
+        return MIN(self.mininumValue, self.cachedMinHeight);
+    }
+    return self.cachedMinHeight;
+}
+
+- (CGFloat)maxHeight
+{    
+    if (self.maximumValue != kJBChartViewUndefinedMaximumValue)
+    {
+        return MAX(self.maximumValue, self.cachedMaxHeight);
     }
     return self.cachedMaxHeight;
 }
 
-- (CGFloat)minHeight
+- (CGFloat)padding
 {
-    return 0;
+    if ([self.dataSource respondsToSelector:@selector(lineChartView:widthForLineAtLineIndex:)])
+    {
+        NSAssert([self.dataSource respondsToSelector:@selector(numberOfLinesInLineChartView:)], @"JBLineChartView // dataSource must implement - (NSUInteger)numberOfLinesInLineChartView:(JBLineChartView *)lineChartView");
+        CGFloat maxWidth = 0.0f;
+        for (int lineIndex=0; lineIndex<[self.dataSource numberOfLinesInLineChartView:self]; lineIndex++)
+        {
+            CGFloat lineWidth = [self.dataSource lineChartView:self widthForLineAtLineIndex:lineIndex];
+            if (lineWidth > maxWidth)
+            {
+                maxWidth = lineWidth;
+            }
+        }
+        return ceil(maxWidth * 0.5);
+    }
+    return ceil(kJBLineChartLinesViewStrokeWidth * 0.5);
 }
 
 - (NSUInteger)dataCount
@@ -456,6 +473,11 @@ static UIColor *kJBLineChartViewDefaultLineSelectionColor = nil;
     return kJBLineChartLinesViewStrokeWidth;
 }
 
+- (CGFloat)paddingForLineChartLinesView:(JBLineChartLinesView *)lineChartLinesView
+{
+    return [self padding];
+}
+
 - (BOOL)lineChartLinesView:(JBLineChartLinesView *)lineChartLinesView smoothLineAtLineIndex:(NSUInteger)lineIndex
 {
     if ([self.dataSource respondsToSelector:@selector(lineChartView:smoothLineAtLineIndex:)])
@@ -508,6 +530,11 @@ static UIColor *kJBLineChartViewDefaultLineSelectionColor = nil;
     return kJBLineChartLinesViewStrokeWidth;
 }
 
+- (CGFloat)paddingForLineChartDotsView:(JBLineChartDotsView *)lineChartDotsView
+{
+    return [self padding];
+}
+
 - (BOOL)lineChartDotsView:(JBLineChartDotsView *)lineChartDotsView showsDotsForLineAtLineIndex:(NSUInteger)lineIndex
 {
     if ([self.dataSource respondsToSelector:@selector(lineChartView:showsDotsForLineAtLineIndex:)])
@@ -519,9 +546,9 @@ static UIColor *kJBLineChartViewDefaultLineSelectionColor = nil;
 
 #pragma mark - Setters
 
-- (void)setState:(JBChartViewState)state animated:(BOOL)animated callback:(void (^)())callback
+- (void)setState:(JBChartViewState)state animated:(BOOL)animated callback:(void (^)())callback force:(BOOL)force
 {
-    [super setState:state animated:animated callback:callback];
+    [super setState:state animated:animated callback:callback force:force];
     
     if ([self.chartData count] > 0)
     {
@@ -552,7 +579,7 @@ static UIColor *kJBLineChartViewDefaultLineSelectionColor = nil;
                         callback();
                     }
                 }];
-            }];            
+            }];
             [UIView animateWithDuration:kJBLineChartViewStateAnimationDuration delay:(self.state == JBChartViewStateExpanded) ? kJBLineChartViewStateAnimationDelay : 0.0 options:UIViewAnimationOptionBeginFromCurrentState animations:^{
                 adjustViewAlphas();
             } completion:nil];
@@ -576,6 +603,83 @@ static UIColor *kJBLineChartViewDefaultLineSelectionColor = nil;
     }
 }
 
+- (void)setState:(JBChartViewState)state animated:(BOOL)animated callback:(void (^)())callback
+{
+    [self setState:state animated:animated callback:callback force:NO];
+}
+
+#pragma mark - Getters
+
+- (CGFloat)cachedMinHeight
+{
+    if (_cachedMinHeight == kJBBarChartViewUndefinedCachedHeight)
+    {
+        CGFloat minHeight = FLT_MAX;
+        NSAssert([self.dataSource respondsToSelector:@selector(numberOfLinesInLineChartView:)], @"JBLineChartView // dataSource must implement - (NSUInteger)numberOfLinesInLineChartView:(JBLineChartView *)lineChartView");
+        for (NSUInteger lineIndex=0; lineIndex<[self.dataSource numberOfLinesInLineChartView:self]; lineIndex++)
+        {
+            NSAssert([self.dataSource respondsToSelector:@selector(lineChartView:numberOfVerticalValuesAtLineIndex:)], @"JBLineChartView // dataSource must implement - (NSUInteger)lineChartView:(JBLineChartView *)lineChartView numberOfVerticalValuesAtLineIndex:(NSUInteger)lineIndex");
+            NSUInteger dataCount = [self.dataSource lineChartView:self numberOfVerticalValuesAtLineIndex:lineIndex];
+            for (NSUInteger horizontalIndex=0; horizontalIndex<dataCount; horizontalIndex++)
+            {
+                NSAssert([self.delegate respondsToSelector:@selector(lineChartView:verticalValueForHorizontalIndex:atLineIndex:)], @"JBLineChartView // delegate must implement - (CGFloat)lineChartView:(JBLineChartView *)lineChartView verticalValueForHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex");
+                CGFloat height = [self.delegate lineChartView:self verticalValueForHorizontalIndex:horizontalIndex atLineIndex:lineIndex];
+                NSAssert(height >= 0, @"JBLineChartView // delegate function - (CGFloat)lineChartView:(JBLineChartView *)lineChartView verticalValueForHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex must return a CGFloat >= 0");
+                if (height < minHeight)
+                {
+                    minHeight = height;
+                }
+            }
+        }
+        _cachedMinHeight = minHeight;
+    }
+    return _cachedMinHeight;
+}
+
+- (CGFloat)cachedMaxHeight
+{
+    if (_cachedMaxHeight == kJBBarChartViewUndefinedCachedHeight)
+    {
+        CGFloat maxHeight = 0;
+        NSAssert([self.dataSource respondsToSelector:@selector(numberOfLinesInLineChartView:)], @"JBLineChartView // dataSource must implement - (NSUInteger)numberOfLinesInLineChartView:(JBLineChartView *)lineChartView");
+        for (NSUInteger lineIndex=0; lineIndex<[self.dataSource numberOfLinesInLineChartView:self]; lineIndex++)
+        {
+            NSAssert([self.dataSource respondsToSelector:@selector(lineChartView:numberOfVerticalValuesAtLineIndex:)], @"JBLineChartView // dataSource must implement - (NSUInteger)lineChartView:(JBLineChartView *)lineChartView numberOfVerticalValuesAtLineIndex:(NSUInteger)lineIndex");
+            NSUInteger dataCount = [self.dataSource lineChartView:self numberOfVerticalValuesAtLineIndex:lineIndex];
+            for (NSUInteger horizontalIndex=0; horizontalIndex<dataCount; horizontalIndex++)
+            {
+                NSAssert([self.delegate respondsToSelector:@selector(lineChartView:verticalValueForHorizontalIndex:atLineIndex:)], @"JBLineChartView // delegate must implement - (CGFloat)lineChartView:(JBLineChartView *)lineChartView verticalValueForHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex");
+                CGFloat height = [self.delegate lineChartView:self verticalValueForHorizontalIndex:horizontalIndex atLineIndex:lineIndex];
+                NSAssert(height >= 0, @"JBLineChartView // delegate function - (CGFloat)lineChartView:(JBLineChartView *)lineChartView verticalValueForHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex must return a CGFloat >= 0");
+                if (height > maxHeight)
+                {
+                    maxHeight = height;
+                }
+            }
+        }
+        _cachedMaxHeight = maxHeight;
+    }
+    return _cachedMaxHeight;
+}
+
+- (CGFloat)mininumValue
+{
+    if ([super mininumValue] == kJBChartViewUndefinedMinimumValue)
+    {
+        return self.cachedMinHeight;
+    }
+    return [super mininumValue];
+}
+
+- (CGFloat)maximumValue
+{
+    if ([super maximumValue] == kJBChartViewUndefinedMaximumValue)
+    {
+        return self.cachedMaxHeight;
+    }
+    return [super maximumValue];
+}
+
 #pragma mark - Touch Helpers
 
 - (CGPoint)clampPoint:(CGPoint)point toBounds:(CGRect)bounds padding:(CGFloat)padding
@@ -628,6 +732,9 @@ static UIColor *kJBLineChartViewDefaultLineSelectionColor = nil;
     NSInteger leftHorizontalIndex = [self horizontalIndexForPoint:point indexClamp:JBLineChartHorizontalIndexClampLeft];
     NSInteger rightHorizontalIndex = [self horizontalIndexForPoint:point indexClamp:JBLineChartHorizontalIndexClampRight];
     
+    // Padding
+    CGFloat chartPadding = [self padding];
+    
     NSUInteger shortestDistance = INT_MAX;
     NSInteger selectedIndex = kJBLineChartUnselectedLineIndex;
     NSAssert([self.dataSource respondsToSelector:@selector(numberOfLinesInLineChartView:)], @"JBLineChartView // dataSource must implement - (NSUInteger)numberOfLinesInLineChartView:(JBLineChartView *)lineChartView");
@@ -642,11 +749,11 @@ static UIColor *kJBLineChartViewDefaultLineSelectionColor = nil;
 
             // Left point
             JBLineChartPoint *leftLineChartPoint = [lineData objectAtIndex:leftHorizontalIndex];
-            CGPoint leftPoint = CGPointMake(leftLineChartPoint.position.x, fmin(fmax(kJBLineChartLinesViewEdgePadding, self.linesView.bounds.size.height - leftLineChartPoint.position.y), self.linesView.bounds.size.height - kJBLineChartLinesViewEdgePadding));
+            CGPoint leftPoint = CGPointMake(leftLineChartPoint.position.x, fmin(fmax(chartPadding, self.linesView.bounds.size.height - leftLineChartPoint.position.y), self.linesView.bounds.size.height - chartPadding));
             
             // Right point
             JBLineChartPoint *rightLineChartPoint = [lineData objectAtIndex:rightHorizontalIndex];
-            CGPoint rightPoint = CGPointMake(rightLineChartPoint.position.x, fmin(fmax(kJBLineChartLinesViewEdgePadding, self.linesView.bounds.size.height - rightLineChartPoint.position.y), self.linesView.bounds.size.height - kJBLineChartLinesViewEdgePadding));
+            CGPoint rightPoint = CGPointMake(rightLineChartPoint.position.x, fmin(fmax(chartPadding, self.linesView.bounds.size.height - rightLineChartPoint.position.y), self.linesView.bounds.size.height - chartPadding));
             
             // Touch point
             CGPoint normalizedTouchPoint = CGPointMake(point.x, self.linesView.bounds.size.height - point.y);
@@ -676,7 +783,7 @@ static UIColor *kJBLineChartViewDefaultLineSelectionColor = nil;
     }
     
     UITouch *touch = [touches anyObject];
-    CGPoint touchPoint = [self clampPoint:[touch locationInView:self.linesView] toBounds:self.linesView.bounds padding:kJBLineChartLinesViewEdgePadding];
+    CGPoint touchPoint = [self clampPoint:[touch locationInView:self.linesView] toBounds:self.linesView.bounds padding:[self padding]];
 
     if ([self.delegate respondsToSelector:@selector(lineChartView:didSelectLineAtIndex:horizontalIndex:touchPoint:)])
     {
@@ -749,7 +856,7 @@ static UIColor *kJBLineChartViewDefaultLineSelectionColor = nil;
 - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
 {
     UITouch *touch = [touches anyObject];
-    CGPoint touchPoint = [self clampPoint:[touch locationInView:self.linesView] toBounds:self.linesView.bounds padding:kJBLineChartLinesViewEdgePadding];
+    CGPoint touchPoint = [self clampPoint:[touch locationInView:self.linesView] toBounds:self.linesView.bounds padding:[self padding]];
     [self.linesView setSelectedLineIndex:[self lineIndexForPoint:touchPoint] animated:YES];
     [self.dotsView setSelectedLineIndex:[self lineIndexForPoint:touchPoint] animated:YES];
     [self touchesBeganOrMovedWithTouches:touches];
@@ -867,6 +974,9 @@ static UIColor *kJBLineChartViewDefaultLineSelectionColor = nil;
 
     NSAssert([self.delegate respondsToSelector:@selector(chartDataForLineChartLinesView:)], @"JBLineChartLinesView // delegate must implement - (NSArray *)chartDataForLineChartLinesView:(JBLineChartLinesView *)lineChartLinesView");
     NSArray *chartData = [self.delegate chartDataForLineChartLinesView:self];
+
+    NSAssert([self.delegate respondsToSelector:@selector(paddingForLineChartLinesView:)], @"JBLineChartLinesView // delegate must implement - (CGFloat)paddingForLineChartLinesView:(JBLineChartLinesView *)lineChartLinesView");
+    CGFloat padding = [self.delegate paddingForLineChartLinesView:self];
     
     NSUInteger lineIndex = 0;
     for (NSArray *lineData in chartData)
@@ -879,11 +989,11 @@ static UIColor *kJBLineChartViewDefaultLineSelectionColor = nil;
         {
             if (index == 0)
             {
-                [path moveToPoint:CGPointMake(lineChartPoint.position.x, fmin(self.bounds.size.height - kJBLineChartLinesViewEdgePadding, fmax(kJBLineChartLinesViewEdgePadding, lineChartPoint.position.y)))];
+                [path moveToPoint:CGPointMake(lineChartPoint.position.x, fmin(self.bounds.size.height - padding, fmax(padding, lineChartPoint.position.y)))];
             }
             else
             {
-                [path addLineToPoint:CGPointMake(lineChartPoint.position.x, fmin(self.bounds.size.height - kJBLineChartLinesViewEdgePadding, fmax(kJBLineChartLinesViewEdgePadding, lineChartPoint.position.y)))];
+                [path addLineToPoint:CGPointMake(lineChartPoint.position.x, fmin(self.bounds.size.height - padding, fmax(padding, lineChartPoint.position.y)))];
             }
             
             index++;
@@ -1036,6 +1146,9 @@ static UIColor *kJBLineChartViewDefaultLineSelectionColor = nil;
     
     NSAssert([self.delegate respondsToSelector:@selector(chartDataForLineChartDotsView:)], @"JBLineChartDotsView // delegate must implement - (NSArray *)chartDataForLineChartDotsView:(JBLineChartDotsView *)lineChartDotsView");
     NSArray *chartData = [self.delegate chartDataForLineChartDotsView:self];
+
+    NSAssert([self.delegate respondsToSelector:@selector(paddingForLineChartDotsView:)], @"JBLineChartDotsView // delegate must implement - (CGFloat)paddingForLineChartDotsView:(JBLineChartDotsView *)lineChartDotsView");
+    CGFloat padding = [self.delegate paddingForLineChartDotsView:self];
     
     NSUInteger lineIndex = 0;
     NSMutableDictionary *mutableDotViewsDict = [NSMutableDictionary dictionary];
@@ -1053,7 +1166,7 @@ static UIColor *kJBLineChartViewDefaultLineSelectionColor = nil;
                 CGFloat dotRadius = lineWidth * kJBLineChartDotsViewRadiusFactor;
                 
                 JBLineChartDotView *dotView = [[JBLineChartDotView alloc] initWithRadius:dotRadius];
-                dotView.center = CGPointMake(lineChartPoint.position.x, fmin(self.bounds.size.height - kJBLineChartLinesViewEdgePadding, fmax(kJBLineChartLinesViewEdgePadding, lineChartPoint.position.y)));
+                dotView.center = CGPointMake(lineChartPoint.position.x, fmin(self.bounds.size.height - padding, fmax(padding, lineChartPoint.position.y)));
                 
                 NSAssert([self.delegate respondsToSelector:@selector(lineChartDotsView:colorForLineAtLineIndex:)], @"JBLineChartDotsView // delegate must implement - (UIColor *)lineChartDotsView:(JBLineChartDotsView *)lineChartDotsView colorForLineAtLineIndex:(NSUInteger)lineIndex");
                 dotView.backgroundColor = [self.delegate lineChartDotsView:self colorForLineAtLineIndex:lineIndex];

README.md

@@ -38,7 +38,7 @@ Simply add the following line to your <code>Podfile</code>:
 Your Podfile should look something like:
 
 	platform :ios, '7.0'
-	pod 'JBChartView', '~> 2.0.2'
+	pod 'JBChartView', '~> 2.1.3'
 	
 ### The Old School Way