BarChartPainter class

Inheritance
Implemented types
Implementers

Constructors

BarChartPainter(BarData? data, Animator? animator, ViewPortHandler? viewPortHandler, double? maxHighlightDistance, bool highLightPerTapEnabled, double extraLeftOffset, double extraTopOffset, double extraRightOffset, double extraBottomOffset, IMarker? marker, Description? desc, bool drawMarkers, Color? infoBgColor, TextPainter? infoPainter, TextPainter? descPainter, XAxis? xAxis, Legend? legend, LegendRenderer? legendRenderer, DataRendererSettingFunction? rendererSettingFunction, OnChartValueSelectedListener? selectedListener, int maxVisibleCount, bool autoScaleMinMaxEnabled, bool pinchZoomEnabled, bool doubleTapToZoomEnabled, bool highlightPerDragEnabled, bool dragXEnabled, bool dragYEnabled, bool scaleXEnabled, bool scaleYEnabled, Paint? gridBackgroundPaint, Paint? backgroundPaint, Paint? borderPaint, bool drawGridBackground, bool drawBorders, bool clipValuesToContent, double minOffset, bool keepPositionOnRotation, OnDrawListener? drawListener, YAxis? axisLeft, YAxis? axisRight, YAxisRenderer? axisRendererLeft, YAxisRenderer? axisRendererRight, Transformer? leftAxisTransformer, Transformer? rightAxisTransformer, XAxisRenderer? xAxisRenderer, Matrix4? zoomMatrixBuffer, bool customViewPortEnabled, bool highlightFullBarEnabled, bool drawValueAboveBar, bool drawBarShadow, bool fitBars, ChartTransListener? chartTransListener)

Properties

animator → Animator?
no setterinherited
axisLeft → YAxis?
no setterinherited
axisRendererLeft → YAxisRenderer?
no setterinherited
axisRendererRight → YAxisRenderer?
no setterinherited
axisRight → YAxis?
no setterinherited
doubleTapToZoomEnabled → bool
no setterinherited
dragXEnabled → bool
no setterinherited
dragYEnabled → bool
no setterinherited
extraBottomOffset → double
no setterinherited
extraLeftOffset → double
no setterinherited
extraRightOffset → double
no setterinherited
extraTopOffset → double
no setterinherited
hashCode → int
The hash code for this object.
no setterinherited
highlighter ↔ IHighlighter?
getter/setter pairinherited
highlightPerDragEnabled → bool
no setterinherited
highLightPerTapEnabled → bool
no setterinherited
indicesToHighlight → List<Highlight>?
no setterinherited
isDrawMarkers → bool
no setterinherited
leftAxisTransformer → Transformer?
no setterinherited
legend → Legend?
no setterinherited
legendRenderer → LegendRenderer?
no setterinherited
marker → IMarker?
no setterinherited
mGetPositionBuffer ↔ List<double>
getter/setter pairinherited
minOffset → double
no setterinherited
posForGetHighestVisibleX ↔ MPPointD
buffer for storing highest visible x point
getter/setter pairinherited
posForGetLowestVisibleX ↔ MPPointD
buffer for storing lowest visible x point
getter/setter pairinherited
renderer ↔ DataRenderer?
//////////////////////////////////////////////// object responsible for rendering the data
getter/setter pairinherited
rightAxisTransformer → Transformer?
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
scaleXEnabled → bool
no setterinherited
scaleYEnabled → bool
no setterinherited
semanticsBuilder → SemanticsBuilderCallback?
Returns a function that builds semantic information for the picture drawn by this painter.
no setterinherited
size → Size?
no setterinherited
viewPortHandler → ViewPortHandler?
no setterinherited
xAxis → XAxis?
no setterinherited

Methods

addEntry(Entry entry, int dataSetIndex) → void
inherited
addEntryByIndex(int index, Entry entry, int dataSetIndex) → void
inherited
addListener(VoidCallback listener) → void
Register a closure to be notified when it is time to repaint.
inherited
autoScale() → void
Performs auto scaling of the axis by recalculating the minimum and maximum y-values based on the entries currently in view.
inherited
calcMinMax() → void
Calculates the y-min and y-max value and the y-delta and x-delta value
override
calculateLegendOffsets(Rect offsets) → Rect
inherited
calculateOffsets() → void
Calculates the offsets of the chart to the border depending on the position of an eventual legend or depending on the length of the y-axis and x-axis labels and their position
inherited
compute() → void
inherited
drawDescription(Canvas c, Size size) → void
Draws the description text in the bottom right corner of the chart (per default)
inherited
drawGridBackground(Canvas c) → void
draws the grid background
inherited
drawMarkers(Canvas canvas) → void
draws all MarkerViews on the highlighted positions
inherited
getAxis(AxisDependency axis) → YAxis?
Returns the y-axis object to the corresponding AxisDependency. In the horizontal bar-chart, LEFT == top, RIGHT == BOTTOM
inherited
getAxisRange(AxisDependency axis) → double
Returns the range of the specified axis.
inherited
getBarBounds(BarEntry e) → Rect
The passed outputRect will be assigned the values of the bounding box of the specified Entry in the specified DataSet. The rect will be assigned Float.MIN_VALUE in all locations if the Entry could not be found in the charts data.
getBarData() → BarData?
override
getCenter(Size size) → MPPointF
Returns a recyclable MPPointF instance. Returns the center point of the chart (the whole View) in pixels.
inherited
getCenterOffsets() → MPPointF
Returns a recyclable MPPointF instance. Returns the center of the chart taking offsets under consideration. (returns the center of the content rectangle)
inherited
getData() → BarLineScatterCandleBubbleData<IBarLineScatterCandleBubbleDataSet<Entry>>?
inherited
getDataSetByTouchPoint(double x, double y) → IBarLineScatterCandleBubbleDataSet<Entry>?
returns the DataSet object displayed at the touched position of the chart
inherited
getDefaultValueFormatter() → ValueFormatter
inherited
getEntryByTouchPoint(double x, double y) → Entry?
returns the Entry object displayed at the touched position of the chart
inherited
getHighestVisibleX() → double
Returns the highest x-index (value on the x-axis) that is still visible on the chart.
inherited
getHighlightByTouchPoint(double x, double y) → Highlight?
Returns the Highlight object (contains x-index and DataSet index) of the selected value at the given touch point inside the BarChart.
override
getLowestVisibleX() → double
Returns the lowest x-index (value on the x-axis) that is still visible on the chart.
inherited
getMarkerPosition(Highlight high) → List<double>
Returns the actual position in pixels of the MarkerView for the given Highlight object.
inherited
getMaxHighlightDistance() → double?
Returns the maximum distance in scren dp a touch can be away from an entry to cause it to get highlighted.
inherited
getMaxVisibleCount() → int
inherited
getMeasuredHeight() → double
inherited
getMeasuredWidth() → double
inherited
getPixelForValues(double x, double y, AxisDependency axis) → MPPointD
Returns a recyclable MPPointD instance Transforms the given chart values into pixels. This is the opposite method to getValuesByTouchPoint(...).
inherited
getPosition(Entry e, AxisDependency axis) → MPPointF
Returns a recyclable MPPointF instance. Returns the position (in pixels) the provided Entry has inside the chart view or null, if the provided Entry is null.
inherited
getScaleX() → double
returns the current x-scale factor
inherited
getScaleY() → double
returns the current y-scale factor
inherited
getTransformer(AxisDependency which) → Transformer?
Returns the Transformer class that contains all matrices and is responsible for transforming values into pixels on the screen and backwards.
inherited
getValuesByTouchPoint1(double x, double y, AxisDependency axis) → MPPointD
Returns a recyclable MPPointD instance Returns the x and y values in the chart at the given touch point (encapsulated in a MPPointD). This method transforms pixel coordinates to coordinates / values in the chart. This is the opposite method to getPixelForValues(...).
inherited
getValuesByTouchPoint2(double x, double y, AxisDependency axis, MPPointD outputPoint) → void
inherited
getVisibleXRange() → double
Returns the range visible on the x-axis.
inherited
getYChartMax() → double
Returns the maximum y value of the chart, regardless of zoom or translation.
inherited
getYChartMin() → double
Returns the minimum y value of the chart, regardless of zoom or translation.
inherited
groupBars(double fromX, double groupSpace, double barSpace) → void
Groups all BarDataSet objects this data object holds together by modifying the x-value of their entries. Previously set x-values of entries will be overwritten. Leaves space between bars and groups as specified by the parameters. Calls notifyDataSetChanged() afterwards.
hasNoDragOffset() → bool
Returns true if both drag offsets (x and y) are zero or smaller.
inherited
highlightValue(double x, int dataSetIndex, int stackIndex) → void
Highlights the value at the given x-value in the given DataSet. Provide -1 as the dataSetIndex to undo all highlighting.
highlightValue1(double x, int dataSetIndex) → void
Highlights any y-value at the given x-value in the given DataSet. Provide -1 as the dataSetIndex to undo all highlighting. This method will call the listener. @param x The x-value to highlight @param dataSetIndex The dataset index to search in
inherited
highlightValue2(double x, double y, int dataSetIndex) → void
Highlights the value at the given x-value and y-value in the given DataSet. Provide -1 as the dataSetIndex to undo all highlighting. This method will call the listener. @param x The x-value to highlight @param y The y-value to highlight. Supply NaN for "any" @param dataSetIndex The dataset index to search in
inherited
highlightValue3(double x, int dataSetIndex, bool callListener) → void
Highlights any y-value at the given x-value in the given DataSet. Provide -1 as the dataSetIndex to undo all highlighting. @param x The x-value to highlight @param dataSetIndex The dataset index to search in @param callListener Should the listener be called for this change
inherited
highlightValue4(double x, double y, int dataSetIndex, bool callListener) → void
Highlights any y-value at the given x-value in the given DataSet. Provide -1 as the dataSetIndex to undo all highlighting. @param x The x-value to highlight @param y The y-value to highlight. Supply NaN for "any" @param dataSetIndex The dataset index to search in @param callListener Should the listener be called for this change
inherited
highlightValue5(Highlight highlight) → void
Highlights the values represented by the provided Highlight object This method will not call the listener.
inherited
highlightValue6(Highlight? high, bool callListener) → void
Highlights the value selected by touch gesture. Unlike highlightValues(...), this generates a callback to the OnChartValueSelectedListener.
inherited
highlightValues(List<Highlight> highs) → void
Highlights the values at the given indices in the given DataSets. Provide null or an empty array to undo all highlighting. This should be used to programmatically highlight values. This method will not call the listener.
inherited
hitTest(Offset position) → bool?
Called whenever a hit test is being performed on an object that is using this custom paint delegate.
inherited
init() → void
inherited
initDefaultNormal() → void
inherited
initDefaultWithData() → void
override
isAnyAxisInverted() → bool
Returns true if either the left or the right or both axes are inverted.
inherited
isDrawBarShadowEnabled() → bool
returns true if drawing shadows (maxvalue) for each bar is enabled, false if not
override
isDrawValueAboveBarEnabled() → bool
returns true if drawing values above bars is enabled, false if not
override
isFullyZoomedOut() → bool
if the chart is fully zoomed out, return true
inherited
isHighlightFullBarEnabled() → bool
@return true the highlight operation is be full-bar oriented, false if single-value
override
isInverted(AxisDependency axis) → bool
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
onPaint(Canvas canvas, Size size) → void
inherited
paint(Canvas canvas, Size size) → void
Called whenever the object needs to paint. The given Canvas has its coordinate space configured such that the origin is at the top left of the box. The area of the box is the size of the size argument.
inherited
prepareOffsetMatrix() → void
inherited
prepareValuePxMatrix() → void
inherited
reassemble() → void
inherited
removeListener(VoidCallback listener) → void
Remove a previously registered closure from the list of closures that the object notifies when it is time to repaint.
inherited
selectedValue(Highlight? high) → void
inherited
setBorderColor(Color color) → void
Sets the color of the chart border lines.
inherited
setBorderWidth(double width) → void
Sets the width of the border lines in dp.
inherited
setDragOffsetX(double offset) → void
Set an offset in dp that allows the user to drag the chart over it's bounds on the x-axis.
inherited
setDragOffsetY(double offset) → void
Set an offset in dp that allows the user to drag the chart over it's bounds on the y-axis.
inherited
setGridBackgroundColor(Color color) → void
Sets the color for the background of the chart-drawing area (everything behind the grid lines).
inherited
setVisibleYRange(double minYRange, double maxYRange, AxisDependency axis) → void
Limits the maximum and minimum y range that can be visible by pinching and zooming.
inherited
setVisibleYRangeMaximum(double maxYRange, AxisDependency axis) → void
Sets the size of the area (range on the y-axis) that should be maximum visible at once.
inherited
setVisibleYRangeMinimum(double minYRange, AxisDependency axis) → void
Sets the size of the area (range on the y-axis) that should be minimum visible at once, no further zooming in possible.
inherited
shouldRebuildSemantics(covariant CustomPainter oldDelegate) → bool
Called whenever a new instance of the custom painter delegate class is provided to the RenderCustomPaint object, or any time that a new CustomPaint object is created with a new instance of the custom painter delegate class (which amounts to the same thing, because the latter is implemented in terms of the former).
inherited
shouldRepaint(covariant CustomPainter oldDelegate) → bool
Called whenever a new instance of the custom painter delegate class is provided to the RenderCustomPaint object, or any time that a new CustomPaint object is created with a new instance of the custom painter delegate class (which amounts to the same thing, because the latter is implemented in terms of the former).
inherited
toString() → String
A string representation of this object.
inherited
translate(double dx, double dy) → void
inherited
updateEntry(int index, Entry entry, int dataSetIndex) → bool
inherited
valuesToHighlight() → bool
Returns true if there are values to highlight, false if there are no values to highlight. Checks if the highlight array is null, has a length of zero or if the first object is null.
inherited
zoom(double scaleX, double scaleY, double? x, double? y) → void
Zooms in or out by the given scale factor. x and y are the coordinates (in pixels) of the zoom center.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited