Allow setting Top/Bottom/Left/Right margins independently in PNBarChart

Jonathan Tron
Commit 3719489e25f03619e1458e4df55289139c9449b6 3719489e 1 parent f4c5f550
Showing 3 changed files with 40 additions and 21 deletions
PNChart/PNBarChart.h
PNChart/PNBarChart.m
PNChartDemo/PCChartViewController.m
--- a/PNChart/PNBarChart.h
View file @3719489
+++ b/PNChart/PNBarChart.h
View file @3719489
@@ -46,7 +46,10 @@ typedef NSString *(^PNYLabelFormatter)(CGFloat yLabelValue);
 /** Formats the ylabel text. */
 @property (copy) PNYLabelFormatter yLabelFormatter;
-@property (nonatomic) CGFloat chartMargin;
+@property (nonatomic) CGFloat chartMarginLeft;
+@property (nonatomic) CGFloat chartMarginRight;
+@property (nonatomic) CGFloat chartMarginTop;
+@property (nonatomic) CGFloat chartMarginBottom;
 /** Controls whether labels should be displayed. */
 @property (nonatomic) BOOL showLabel;
--- a/PNChart/PNBarChart.m
View file @3719489
+++ b/PNChart/PNBarChart.m
View file @3719489
@@ -56,7 +56,10 @@
     _xLabelSkip          = 1;
     _yLabelSum           = 4;
     _labelMarginTop      = 0;
-    _chartMargin         = 25.0;
+    _chartMarginLeft     = 25.0;
+    _chartMarginRight    = 25.0;
+    _chartMarginTop      = 25.0;
+    _chartMarginBottom   = 25.0;
     _barRadius           = 2.0;
     _showChartBorder     = NO;
     _showLevelLine       = NO;
@@ -104,7 +107,7 @@
   [self processYMaxValue];
-  float sectionHeight = (self.frame.size.height - _chartMargin * 2 - kXLabelHeight) / _yLabelSum;
+  float sectionHeight = (self.frame.size.height - _chartMarginTop - _chartMarginBottom - kXLabelHeight) / _yLabelSum;
   for (int i = 0; i <= _yLabelSum; i++) {
     NSString *labelText;
     if (_yLabels) {
@@ -114,7 +117,7 @@
       labelText = _yLabelFormatter((float)_yValueMax * ( (_yLabelSum - i) / (float)_yLabelSum ));
     }
-    CGRect frame = (CGRect){0, sectionHeight * i + _chartMargin - kYLabelHeight/2.0, _yChartLabelWidth, kYLabelHeight};
+    CGRect frame = (CGRect){0, sectionHeight * i + _chartMarginTop - kYLabelHeight/2.0, _yChartLabelWidth, kYLabelHeight};
     PNChartLabel *label = [[PNChartLabel alloc] initWithFrame:frame];
     label.font = _labelFont;
     label.textColor = _labelTextColor;
@@ -153,7 +156,7 @@
         _xChartLabels = [NSMutableArray new];
     }
-	_xLabelWidth = (self.frame.size.width - _chartMargin * 2) / [xLabels count];
+	_xLabelWidth = (self.frame.size.width - _chartMarginLeft - _chartMarginRight) / [xLabels count];
     if (_showLabel) {
         int labelAddCount = 0;
@@ -171,13 +174,13 @@
                 CGFloat labelXPosition;
                 if (_rotateForXAxisText){
                     label.transform = CGAffineTransformMakeRotation(M_PI / 4);
-                    labelXPosition = (index *  _xLabelWidth + _chartMargin + _xLabelWidth /1.5);
+                    labelXPosition = (index *  _xLabelWidth + _chartMarginLeft + _xLabelWidth /1.5);
                 }
                 else{
-                    labelXPosition = (index *  _xLabelWidth + _chartMargin + _xLabelWidth /2.0 );
+                    labelXPosition = (index *  _xLabelWidth + _chartMarginLeft + _xLabelWidth /2.0 );
                 }
                 label.center = CGPointMake(labelXPosition,
-                                           self.frame.size.height - kXLabelHeight - _chartMargin + label.frame.size.height /2.0 + _labelMarginTop);
+                                           self.frame.size.height - kXLabelHeight - _chartMarginTop + label.frame.size.height /2.0 + _labelMarginTop);
                 labelAddCount = 0;
                 [_xChartLabels addObject:label];
@@ -197,7 +200,7 @@
 {
     //Add bars
-    CGFloat chartCavanHeight = self.frame.size.height - _chartMargin * 2 - kXLabelHeight;
+    CGFloat chartCavanHeight = self.frame.size.height - _chartMarginTop - _chartMarginBottom - kXLabelHeight;
     NSInteger index = 0;
     for (NSNumber *valueString in _yValues) {
@@ -212,9 +215,9 @@
             if (_barWidth) {
                 barWidth = _barWidth;
-                barXPosition = index *  _xLabelWidth + _chartMargin + _xLabelWidth /2.0 - _barWidth /2.0;
+                barXPosition = index *  _xLabelWidth + _chartMarginLeft + _xLabelWidth /2.0 - _barWidth /2.0;
             }else{
-                barXPosition = index *  _xLabelWidth + _chartMargin + _xLabelWidth * 0.25;
+                barXPosition = index *  _xLabelWidth + _chartMarginLeft + _xLabelWidth * 0.25;
                 if (_showLabel) {
                     barWidth = _xLabelWidth * 0.5;
@@ -226,7 +229,7 @@
             }
             bar = [[PNBar alloc] initWithFrame:CGRectMake(barXPosition, //Bar X position
-                                                          self.frame.size.height - chartCavanHeight - kXLabelHeight - _chartMargin , //Bar Y position
+                                                          self.frame.size.height - chartCavanHeight - kXLabelHeight - _chartMarginTop , //Bar Y position
                                                           barWidth, // Bar witdh
                                                           self.showLevelLine ? chartCavanHeight/2.0:chartCavanHeight)]; //Bar height
@@ -301,8 +304,8 @@
         UIBezierPath *progressline = [UIBezierPath bezierPath];
-        [progressline moveToPoint:CGPointMake(_chartMargin, self.frame.size.height - kXLabelHeight - _chartMargin)];
+        [progressline moveToPoint:CGPointMake(_chartMarginLeft, self.frame.size.height - kXLabelHeight - _chartMarginTop)];
-        [progressline addLineToPoint:CGPointMake(self.frame.size.width - _chartMargin,  self.frame.size.height - kXLabelHeight - _chartMargin)];
+        [progressline addLineToPoint:CGPointMake(self.frame.size.width - _chartMarginRight,  self.frame.size.height - kXLabelHeight - _chartMarginTop)];
         [progressline setLineWidth:1.0];
         [progressline setLineCapStyle:kCGLineCapSquare];
@@ -330,8 +333,8 @@
         UIBezierPath *progressLeftline = [UIBezierPath bezierPath];
-        [progressLeftline moveToPoint:CGPointMake(_chartMargin, self.frame.size.height - kXLabelHeight - _chartMargin)];
+        [progressLeftline moveToPoint:CGPointMake(_chartMarginLeft, self.frame.size.height - kXLabelHeight - _chartMarginBottom + _chartMarginTop)];
-        [progressLeftline addLineToPoint:CGPointMake(_chartMargin,  _chartMargin)];
+        [progressLeftline addLineToPoint:CGPointMake(_chartMarginLeft,  _chartMarginTop)];
         [progressLeftline setLineWidth:1.0];
         [progressLeftline setLineCapStyle:kCGLineCapSquare];
@@ -360,8 +363,8 @@
     UIBezierPath *progressline = [UIBezierPath bezierPath];
-    [progressline moveToPoint:CGPointMake(_chartMargin, (self.frame.size.height - kXLabelHeight )/2.0)];
+    [progressline moveToPoint:CGPointMake(_chartMarginLeft, (self.frame.size.height - kXLabelHeight )/2.0)];
-    [progressline addLineToPoint:CGPointMake(self.frame.size.width - _chartMargin,  (self.frame.size.height - kXLabelHeight )/2.0)];
+    [progressline addLineToPoint:CGPointMake(self.frame.size.width - _chartMarginLeft - _chartMarginRight,  (self.frame.size.height - kXLabelHeight )/2.0)];
     [progressline setLineWidth:1.0];
     [progressline setLineCapStyle:kCGLineCapSquare];
--- a/PNChartDemo/PCChartViewController.m
View file @3719489
+++ b/PNChartDemo/PCChartViewController.m
View file @3719489
@@ -91,20 +91,33 @@
     }
     else if ([self.title isEqualToString:@"Bar Chart"])
     {
+        static NSNumberFormatter *barChartFormatter;
+        if (!barChartFormatter){
+            barChartFormatter = [[NSNumberFormatter alloc] init];
+            barChartFormatter.numberStyle = NSNumberFormatterCurrencyStyle;
+            barChartFormatter.allowsFloats = NO;
+            barChartFormatter.maximumFractionDigits = 0;
+        }
         self.titleLabel.text = @"Bar Chart";
         self.barChart = [[PNBarChart alloc] initWithFrame:CGRectMake(0, 135.0, SCREEN_WIDTH, 200.0)];
 //        self.barChart.showLabel = NO;
         self.barChart.backgroundColor = [UIColor clearColor];
         self.barChart.yLabelFormatter = ^(CGFloat yValue){
-            CGFloat yValueParsed = yValue;
+            return [barChartFormatter stringFromNumber:[NSNumber numberWithFloat:yValue]];
-            NSString * labelText = [NSString stringWithFormat:@"%0.f",yValueParsed];
-            return labelText;
         };
+        self.barChart.yChartLabelWidth = 60.0;
+        self.barChart.chartMarginLeft = 70.0;
+        self.barChart.chartMarginRight = 10.0;
+        self.barChart.chartMarginTop = 5.0;
+        self.barChart.chartMarginBottom = 10.0;
+
+        
         self.barChart.labelMarginTop = 5.0;
         self.barChart.showChartBorder = YES;
         [self.barChart setXLabels:@[@"2",@"3",@"4",@"5",@"2",@"3",@"4",@"5"]];
 //       self.barChart.yLabels = @[@-10,@0,@10];
+//        [self.barChart setYValues:@[@10000.0,@30000.0,@10000.0,@100000.0,@500000.0,@1000000.0,@1150000.0,@2150000.0]];
         [self.barChart setYValues:@[@10.82,@1.88,@6.96,@33.93,@10.82,@1.88,@6.96,@33.93]];
         [self.barChart setStrokeColors:@[PNGreen,PNGreen,PNRed,PNGreen,PNGreen,PNGreen,PNRed,PNGreen]];
         self.barChart.isGradientShow = NO;