Xcode下饼图、柱状图、折线图的绘制

#import "CPTDefinitions.h" #import "CPTLayer.h" #import "CPTTextStyle.h" #import <Foundation/Foundation.h> /// @file @class CPTAxis; @class CPTAxisSet; @class CPTAxisTitle; @class CPTGridLines; @class CPTLimitBand; @class CPTLineCap; @class CPTLineStyle; @class CPTPlotSpace; @class CPTPlotRange; @class CPTPlotArea; @class CPTShadow; /** * @brief Enumeration of labeling policies **/ typedef enum _CPTAxisLabelingPolicy { CPTAxisLabelingPolicyNone, ///< No labels provided; user sets labels and tick locations. CPTAxisLabelingPolicyLocationsProvided, ///< User sets tick locations; axis makes labels. CPTAxisLabelingPolicyFixedInterval, ///< Fixed interval labeling policy. CPTAxisLabelingPolicyAutomatic, ///< Automatic labeling policy. CPTAxisLabelingPolicyEqualDivisions ///< Divide the plot range into equal parts. } CPTAxisLabelingPolicy; #pragma mark - /** * @brief Axis labeling delegate. **/ @protocol CPTAxisDelegate<NSObject> @optional /// @name Labels /// @{ /** @brief (Optional) Determines if the axis should relabel itself now. * @param axis The axis. * @return YES if the axis should relabel now. **/ -(BOOL)axisShouldRelabel:(CPTAxis *)axis; /** @brief (Optional) The method is called after the axis is relabeled to allow the delegate to perform any * necessary cleanup or further labeling actions. * @param axis The axis. **/ -(void)axisDidRelabel:(CPTAxis *)axis; /** @brief (Optional) This method gives the delegate a chance to create custom labels for each tick. * It can be used with any labeling policy. Returning NO will cause the axis not * to update the labels. It is then the delegates responsiblity to do this. * @param axis The axis. * @param locations The locations of the major ticks. * @return YES if the axis class should proceed with automatic labeling. **/ -(BOOL)axis:(CPTAxis *)axis shouldUpdateAxisLabelsAtLocations:(NSSet *)locations; /** @brief (Optional) This method gives the delegate a chance to create custom labels for each minor tick. * It can be used with any labeling policy. Returning NO will cause the axis not * to update the labels. It is then the delegates responsiblity to do this. * @param axis The axis. * @param locations The locations of the minor ticks. * @return YES if the axis class should proceed with automatic labeling. **/ -(BOOL)axis:(CPTAxis *)axis shouldUpdateMinorAxisLabelsAtLocations:(NSSet *)locations; /// @} @end #pragma mark - @interface CPTAxis : CPTLayer { @private CPTCoordinate coordinate; CPTPlotSpace *plotSpace; NSSet *majorTickLocations; NSSet *minorTickLocations; CGFloat majorTickLength; CGFloat minorTickLength; CGFloat labelOffset; CGFloat minorTickLabelOffset; CGFloat labelRotation; CGFloat minorTickLabelRotation; CPTAlignment labelAlignment; CPTAlignment minorTickLabelAlignment; CPTLineStyle *axisLineStyle; CPTLineStyle *majorTickLineStyle; CPTLineStyle *minorTickLineStyle; CPTLineStyle *majorGridLineStyle; CPTLineStyle *minorGridLineStyle; CPTLineCap *axisLineCapMin; CPTLineCap *axisLineCapMax; NSDecimal labelingOrigin; NSDecimal majorIntervalLength; NSUInteger minorTicksPerInterval; NSUInteger preferredNumberOfMajorTicks; CPTAxisLabelingPolicy labelingPolicy; CPTTextStyle *labelTextStyle; CPTTextStyle *minorTickLabelTextStyle; CPTTextStyle *titleTextStyle; NSNumberFormatter *labelFormatter; NSNumberFormatter *minorTickLabelFormatter; BOOL labelFormatterChanged; BOOL minorLabelFormatterChanged; NSSet *axisLabels; NSSet *minorTickAxisLabels; CPTAxisTitle *axisTitle; NSString *title; CGFloat titleOffset; CGFloat titleRotation; NSDecimal titleLocation; CPTSign tickDirection; BOOL needsRelabel; NSArray *labelExclusionRanges; CPTPlotRange *visibleRange; CPTPlotRange *gridLinesRange; NSArray *alternatingBandFills; NSMutableArray *mutableBackgroundLimitBands; BOOL separateLayers; CPTShadow *labelShadow; __cpt_weak CPTPlotArea *plotArea; __cpt_weak CPTGridLines *minorGridLines; __cpt_weak CPTGridLines *majorGridLines; } /// @name Axis /// @{ @property (nonatomic, readwrite, copy) CPTLineStyle *axisLineStyle; @property (nonatomic, readwrite, assign) CPTCoordinate coordinate; @property (nonatomic, readwrite, assign) NSDecimal labelingOrigin; @property (nonatomic, readwrite, assign) CPTSign tickDirection; @property (nonatomic, readwrite, copy) CPTPlotRange *visibleRange; @property (nonatomic, readwrite, copy) CPTLineCap *axisLineCapMin; @property (nonatomic, readwrite, copy) CPTLineCap *axisLineCapMax; /// @} /// @name Title /// @{ @property (nonatomic, readwrite, copy) CPTTextStyle *titleTextStyle; @property (nonatomic, readwrite, retain) CPTAxisTitle *axisTitle; @property (nonatomic, readwrite, assign) CGFloat titleOffset; @property (nonatomic, readwrite, copy) NSString *title; @property (nonatomic, readwrite, assign) CGFloat titleRotation; @property (nonatomic, readwrite, assign) NSDecimal titleLocation; @property (nonatomic, readonly, assign) NSDecimal defaultTitleLocation; /// @} /// @name Labels /// @{ @property (nonatomic, readwrite, assign) CPTAxisLabelingPolicy labelingPolicy; @property (nonatomic, readwrite, assign) CGFloat labelOffset; @property (nonatomic, readwrite, assign) CGFloat minorTickLabelOffset; @property (nonatomic, readwrite, assign) CGFloat labelRotation; @property (nonatomic, readwrite, assign) CGFloat minorTickLabelRotation; @property (nonatomic, readwrite, assign) CPTAlignment labelAlignment; @property (nonatomic, readwrite, assign) CPTAlignment minorTickLabelAlignment; @property (nonatomic, readwrite, copy) CPTTextStyle *labelTextStyle; @property (nonatomic, readwrite, copy) CPTTextStyle *minorTickLabelTextStyle; @property (nonatomic, readwrite, retain) NSNumberFormatter *labelFormatter; @property (nonatomic, readwrite, retain) NSNumberFormatter *minorTickLabelFormatter; @property (nonatomic, readwrite, retain) NSSet *axisLabels; @property (nonatomic, readwrite, retain) NSSet *minorTickAxisLabels; @property (nonatomic, readonly, assign) BOOL needsRelabel; @property (nonatomic, readwrite, retain) NSArray *labelExclusionRanges; @property (nonatomic, readwrite, retain) CPTShadow *labelShadow; /// @} /// @name Major Ticks /// @{ @property (nonatomic, readwrite, assign) NSDecimal majorIntervalLength; @property (nonatomic, readwrite, assign) CGFloat majorTickLength; @property (nonatomic, readwrite, copy) CPTLineStyle *majorTickLineStyle; @property (nonatomic, readwrite, retain) NSSet *majorTickLocations; @property (nonatomic, readwrite, assign) NSUInteger preferredNumberOfMajorTicks; /// @} /// @name Minor Ticks /// @{ @property (nonatomic, readwrite, assign) NSUInteger minorTicksPerInterval; @property (nonatomic, readwrite, assign) CGFloat minorTickLength; @property (nonatomic, readwrite, copy) CPTLineStyle *minorTickLineStyle; @property (nonatomic, readwrite, retain) NSSet *minorTickLocations; /// @} /// @name Grid Lines /// @{ @property (nonatomic, readwrite, copy) CPTLineStyle *majorGridLineStyle; @property (nonatomic, readwrite, copy) CPTLineStyle *minorGridLineStyle; @property (nonatomic, readwrite, copy) CPTPlotRange *gridLinesRange; /// @} /// @name Background Bands /// @{ @property (nonatomic, readwrite, copy) NSArray *alternatingBandFills; @property (nonatomic, readonly, retain) NSArray *backgroundLimitBands; /// @} /// @name Plot Space /// @{ @property (nonatomic, readwrite, retain) CPTPlotSpace *plotSpace; /// @} /// @name Layers /// @{ @property (nonatomic, readwrite, assign) BOOL separateLayers; @property (nonatomic, readwrite, cpt_weak_property) __cpt_weak CPTPlotArea *plotArea; @property (nonatomic, readonly, cpt_weak_property) __cpt_weak CPTGridLines *minorGridLines; @property (nonatomic, readonly, cpt_weak_property) __cpt_weak CPTGridLines *majorGridLines; @property (nonatomic, readonly, retain) CPTAxisSet *axisSet; /// @} /// @name Labels /// @{ -(void)relabel; -(void)setNeedsRelabel; -(void)updateMajorTickLabels; -(void)updateMinorTickLa