114 lines
2.4 KiB
Go
114 lines
2.4 KiB
Go
package chart
|
|
|
|
import (
|
|
"fmt"
|
|
"strings"
|
|
|
|
"github.com/wcharczuk/go-chart/drawing"
|
|
)
|
|
|
|
// Style is a simple style set.
|
|
type Style struct {
|
|
Show bool
|
|
StrokeColor drawing.Color
|
|
FillColor drawing.Color
|
|
StrokeWidth float64
|
|
FontSize float64
|
|
FontColor drawing.Color
|
|
Padding Box
|
|
}
|
|
|
|
// IsZero returns if the object is set or not.
|
|
func (s Style) IsZero() bool {
|
|
return s.StrokeColor.IsZero() && s.FillColor.IsZero() && s.StrokeWidth == 0 && s.FontSize == 0
|
|
}
|
|
|
|
// GetStrokeColor returns the stroke color.
|
|
func (s Style) GetStrokeColor(defaults ...drawing.Color) drawing.Color {
|
|
if s.StrokeColor.IsZero() {
|
|
if len(defaults) > 0 {
|
|
return defaults[0]
|
|
}
|
|
return drawing.ColorTransparent
|
|
}
|
|
return s.StrokeColor
|
|
}
|
|
|
|
// GetFillColor returns the fill color.
|
|
func (s Style) GetFillColor(defaults ...drawing.Color) drawing.Color {
|
|
if s.FillColor.IsZero() {
|
|
if len(defaults) > 0 {
|
|
return defaults[0]
|
|
}
|
|
return drawing.ColorTransparent
|
|
}
|
|
return s.FillColor
|
|
}
|
|
|
|
// GetStrokeWidth returns the stroke width.
|
|
func (s Style) GetStrokeWidth(defaults ...float64) float64 {
|
|
if s.StrokeWidth == 0 {
|
|
if len(defaults) > 0 {
|
|
return defaults[0]
|
|
}
|
|
return DefaultStrokeWidth
|
|
}
|
|
return s.StrokeWidth
|
|
}
|
|
|
|
// GetFontSize gets the font size.
|
|
func (s Style) GetFontSize(defaults ...float64) float64 {
|
|
if s.FontSize == 0 {
|
|
if len(defaults) > 0 {
|
|
return defaults[0]
|
|
}
|
|
return DefaultFontSize
|
|
}
|
|
return s.FontSize
|
|
}
|
|
|
|
// GetFontColor gets the font size.
|
|
func (s Style) GetFontColor(defaults ...drawing.Color) drawing.Color {
|
|
if s.FontColor.IsZero() {
|
|
if len(defaults) > 0 {
|
|
return defaults[0]
|
|
}
|
|
return drawing.ColorTransparent
|
|
}
|
|
return s.FontColor
|
|
}
|
|
|
|
// SVG returns the style as a svg style string.
|
|
func (s Style) SVG(dpi float64) string {
|
|
sw := s.StrokeWidth
|
|
sc := s.StrokeColor
|
|
fc := s.FillColor
|
|
fs := s.FontSize
|
|
fnc := s.FontColor
|
|
|
|
strokeWidthText := "stroke-width:0"
|
|
if sw != 0 {
|
|
strokeWidthText = "stroke-width:" + fmt.Sprintf("%d", int(sw))
|
|
}
|
|
|
|
strokeText := "stroke:none"
|
|
if !sc.IsZero() {
|
|
strokeText = "stroke:" + sc.String()
|
|
}
|
|
|
|
fillText := "fill:none"
|
|
if !fc.IsZero() {
|
|
fillText = "fill:" + fc.String()
|
|
}
|
|
|
|
fontSizeText := ""
|
|
if fs != 0 {
|
|
fontSizeText = "font-size:" + fmt.Sprintf("%.1fpx", drawing.PointsToPixels(dpi, fs))
|
|
}
|
|
|
|
if !fnc.IsZero() {
|
|
fillText = "fill:" + fnc.String()
|
|
}
|
|
return strings.Join([]string{strokeWidthText, strokeText, fillText, fontSizeText}, ";")
|
|
}
|