png

package

v0.11.0 Latest Latest Go to latest Published: Mar 22, 2018 License: BSD-2-Clause Imports: 8 Imported by: 4

Details

Valid go.mod file
Redistributable license
Tagged version
Stable version
Learn more about best practices

Repository

github.com/go-graphite/carbonapi

Links

Open Source Insights

Documentation ¶

Index ¶

Constants
Variables
func Description() map[string]types.FunctionDescription
func EvalExprGraph(e parser.Expr, from, until int32, ...) ([]*types.MetricData, error)
func MarshalPNG(params PictureParams, results []*types.MetricData) []byte
func MarshalPNGRequest(r *http.Request, results []*types.MetricData, templateName string) []byte
func MarshalSVG(params PictureParams, results []*types.MetricData) []byte
func MarshalSVGRequest(r *http.Request, results []*types.MetricData, templateName string) []byte
func SetColor(name, rgba string) error
func SetTemplate(name string, params PictureParams)
type AreaMode
type FontSlant
type FontWeight
type LineMode
type PictureParams
- func GetPictureParams(r *http.Request, metricData []*types.MetricData) PictureParams
- func GetPictureParamsWithTemplate(r *http.Request, template string, metricData []*types.MetricData) PictureParams
type PieMode
type YAxisSide

Constants ¶

View Source

const (
	LineModeSlope     LineMode = 1
	LineModeStaircase          = 2
	LineModeConnected          = 4
)

View Source

const (
	AreaModeNone    AreaMode = 1
	AreaModeFirst            = 2
	AreaModeAll              = 4
	AreaModeStacked          = 8
)

View Source

const (
	PieModeMaximum PieMode = 1
	PieModeMinimum         = 2
	PieModeAverage         = 4
)

View Source

const HaveGraphSupport = false

Variables ¶

View Source

var DefaultColorList = []string{"blue", "green", "red", "purple", "brown", "yellow", "aqua", "grey", "magenta", "pink", "gold", "rose"}

View Source

var DefaultParams = PictureParams{
	Width:      330,
	Height:     250,
	Margin:     10,
	LogBase:    0,
	FgColor:    "white",
	BgColor:    "black",
	MajorLine:  "rose",
	MinorLine:  "grey",
	FontName:   "Sans",
	FontSize:   10,
	FontBold:   FontWeightNormal,
	FontItalic: FontSlantNormal,

	GraphOnly:  false,
	HideLegend: false,
	HideGrid:   false,
	HideAxes:   false,
	HideYAxis:  false,
	HideXAxis:  false,
	YAxisSide:  YAxisSideLeft,

	Title:       "",
	Vtitle:      "",
	VtitleRight: "",

	Tz: time.Local,

	ConnectedLimit: math.MaxInt32,
	LineMode:       LineModeSlope,
	AreaMode:       AreaModeNone,
	AreaAlpha:      math.NaN(),
	PieMode:        PieModeAverage,
	LineWidth:      1.2,
	ColorList:      DefaultColorList,

	YMin:    math.NaN(),
	YMax:    math.NaN(),
	YStep:   math.NaN(),
	XMin:    math.NaN(),
	XMax:    math.NaN(),
	XStep:   math.NaN(),
	XFormat: "",
	MinorY:  1,

	UniqueLegend:   false,
	DrawNullAsZero: false,
	DrawAsInfinite: false,

	YMinLeft:    math.NaN(),
	YMinRight:   math.NaN(),
	YMaxLeft:    math.NaN(),
	YMaxRight:   math.NaN(),
	YStepL:      math.NaN(),
	YStepR:      math.NaN(),
	YLimitLeft:  math.NaN(),
	YLimitRight: math.NaN(),

	YUnitSystem: "si",
	YDivisors:   []float64{4, 5, 6},

	RightWidth:  1.2,
	RightDashed: false,
	RightColor:  "",
	LeftWidth:   1.2,
	LeftDashed:  false,
	LeftColor:   "",

	MajorGridLineColor: "white",
	MinorGridLineColor: "grey",
}

Functions ¶

func Description ¶

func Description() map[string]types.FunctionDescription

func EvalExprGraph ¶

func EvalExprGraph(e parser.Expr, from, until int32, values map[parser.MetricRequest][]*types.MetricData) ([]*types.MetricData, error)

func MarshalPNG ¶

func MarshalPNG(params PictureParams, results []*types.MetricData) []byte

func MarshalPNGRequest ¶

func MarshalPNGRequest(r *http.Request, results []*types.MetricData, templateName string) []byte

func MarshalSVG ¶

func MarshalSVG(params PictureParams, results []*types.MetricData) []byte

func MarshalSVGRequest ¶

func MarshalSVGRequest(r *http.Request, results []*types.MetricData, templateName string) []byte

func SetColor ¶

func SetColor(name, rgba string) error

func SetTemplate ¶

func SetTemplate(name string, params PictureParams)

SetTemplate adds a picture param template with specified name and parameters

Types ¶

type AreaMode ¶

type AreaMode int

type FontSlant ¶

type FontSlant int

const (
	FontSlantNormal FontSlant = iota
	FontSlantItalic
	FontSlantOblique
)

type FontWeight ¶

type FontWeight int

const (
	FontWeightNormal FontWeight = iota
	FontWeightBold
)

type LineMode ¶

type LineMode int

type PictureParams ¶

type PictureParams struct {
	Width      float64
	Height     float64
	Margin     int
	LogBase    float64
	FgColor    string
	BgColor    string
	MajorLine  string
	MinorLine  string
	FontName   string
	FontSize   float64
	FontBold   FontWeight
	FontItalic FontSlant

	GraphOnly  bool
	HideLegend bool
	HideGrid   bool
	HideAxes   bool
	HideYAxis  bool
	HideXAxis  bool
	YAxisSide  YAxisSide

	Title       string
	Vtitle      string
	VtitleRight string

	Tz *time.Location

	ConnectedLimit int
	LineMode       LineMode
	AreaMode       AreaMode
	AreaAlpha      float64
	PieMode        PieMode
	LineWidth      float64
	ColorList      []string

	YMin    float64
	YMax    float64
	XMin    float64
	XMax    float64
	YStep   float64
	XStep   float64
	MinorY  int
	XFormat string

	YMaxLeft    float64
	YLimitLeft  float64
	YMaxRight   float64
	YLimitRight float64
	YMinLeft    float64
	YMinRight   float64
	YStepL      float64
	YStepR      float64

	UniqueLegend   bool
	DrawNullAsZero bool
	DrawAsInfinite bool

	YUnitSystem string
	YDivisors   []float64

	RightWidth  float64
	RightDashed bool
	RightColor  string
	LeftWidth   float64
	LeftDashed  bool
	LeftColor   string

	MinorGridLineColor string
	MajorGridLineColor string
}

func GetPictureParams ¶

func GetPictureParams(r *http.Request, metricData []*types.MetricData) PictureParams

GetPictureParams returns PictureParams with default settings

func GetPictureParamsWithTemplate ¶

func GetPictureParamsWithTemplate(r *http.Request, template string, metricData []*types.MetricData) PictureParams

GetPictureParamsWithTemplate returns PictureParams with specified template

type PieMode ¶

type PieMode int

type YAxisSide ¶

type YAxisSide int

const (
	YAxisSideRight YAxisSide = 1
	YAxisSideLeft            = 2
)

Source Files ¶

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