Merge pull request #13 from wcharczuk/text-rotation
Adds `TextRotationDegrees`
This commit is contained in:
Will Charczuk
GitHub
commit
27a5efdd2d
18
.vscode/launch.json
vendored
Normal file
18
.vscode/launch.json
vendored
Normal file
|
|
@ -0,0 +1,18 @@
|
|||
{
|
||||
"version": "0.2.0",
|
||||
"configurations": [
|
||||
{
|
||||
"name": "Launch",
|
||||
"type": "go",
|
||||
"request": "launch",
|
||||
"mode": "test",
|
||||
"remotePath": "",
|
||||
"port": 2345,
|
||||
"host": "127.0.0.1",
|
||||
"program": "${workspaceRoot}",
|
||||
"env": {},
|
||||
"args": [],
|
||||
"showLog": true
|
||||
}
|
||||
]
|
||||
}
|
||||
|
|
@ -2,23 +2,33 @@ package main
|
|||
|
||||
import (
|
||||
"net/http"
|
||||
"strconv"
|
||||
"strings"
|
||||
"time"
|
||||
|
||||
util "github.com/blendlabs/go-util"
|
||||
"github.com/wcharczuk/go-chart"
|
||||
)
|
||||
|
||||
func parseInt(str string) int {
|
||||
v, _ := strconv.Atoi(str)
|
||||
return v
|
||||
}
|
||||
|
||||
func parseFloat64(str string) float64 {
|
||||
v, _ := strconv.ParseFloat(str, 64)
|
||||
return v
|
||||
}
|
||||
|
||||
func readData() ([]time.Time, []float64) {
|
||||
var xvalues []time.Time
|
||||
var yvalues []float64
|
||||
util.ReadFileByLines("requests.csv", func(line string) {
|
||||
chart.File.ReadByLines("requests.csv", func(line string) {
|
||||
parts := strings.Split(line, ",")
|
||||
year := util.ParseInt(parts[0])
|
||||
month := util.ParseInt(parts[1])
|
||||
day := util.ParseInt(parts[2])
|
||||
hour := util.ParseInt(parts[3])
|
||||
elapsedMillis := util.ParseFloat64(parts[4])
|
||||
year := parseInt(parts[0])
|
||||
month := parseInt(parts[1])
|
||||
day := parseInt(parts[2])
|
||||
hour := parseInt(parts[3])
|
||||
elapsedMillis := parseFloat64(parts[4])
|
||||
xvalues = append(xvalues, time.Date(year, time.Month(month), day, hour, 0, 0, 0, time.UTC))
|
||||
yvalues = append(yvalues, elapsedMillis)
|
||||
})
|
||||
|
|
@ -27,12 +37,12 @@ func readData() ([]time.Time, []float64) {
|
|||
|
||||
func releases() []chart.GridLine {
|
||||
return []chart.GridLine{
|
||||
{Value: chart.TimeToFloat64(time.Date(2016, 8, 1, 9, 30, 0, 0, time.UTC))},
|
||||
{Value: chart.TimeToFloat64(time.Date(2016, 8, 2, 9, 30, 0, 0, time.UTC))},
|
||||
{Value: chart.TimeToFloat64(time.Date(2016, 8, 3, 9, 30, 0, 0, time.UTC))},
|
||||
{Value: chart.TimeToFloat64(time.Date(2016, 8, 4, 9, 30, 0, 0, time.UTC))},
|
||||
{Value: chart.TimeToFloat64(time.Date(2016, 8, 5, 9, 30, 0, 0, time.UTC))},
|
||||
{Value: chart.TimeToFloat64(time.Date(2016, 8, 6, 9, 30, 0, 0, time.UTC))},
|
||||
{Value: chart.Time.ToFloat64(time.Date(2016, 8, 1, 9, 30, 0, 0, time.UTC))},
|
||||
{Value: chart.Time.ToFloat64(time.Date(2016, 8, 2, 9, 30, 0, 0, time.UTC))},
|
||||
{Value: chart.Time.ToFloat64(time.Date(2016, 8, 3, 9, 30, 0, 0, time.UTC))},
|
||||
{Value: chart.Time.ToFloat64(time.Date(2016, 8, 4, 9, 30, 0, 0, time.UTC))},
|
||||
{Value: chart.Time.ToFloat64(time.Date(2016, 8, 5, 9, 30, 0, 0, time.UTC))},
|
||||
{Value: chart.Time.ToFloat64(time.Date(2016, 8, 6, 9, 30, 0, 0, time.UTC))},
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -81,9 +91,14 @@ func drawChart(res http.ResponseWriter, req *http.Request) {
|
|||
Name: "Elapsed Millis",
|
||||
NameStyle: chart.StyleShow(),
|
||||
Style: chart.StyleShow(),
|
||||
TickStyle: chart.Style{
|
||||
TextRotationDegrees: 45.0,
|
||||
},
|
||||
},
|
||||
XAxis: chart.XAxis{
|
||||
Style: chart.StyleShow(),
|
||||
Style: chart.Style{
|
||||
Show: true,
|
||||
},
|
||||
ValueFormatter: chart.TimeHourValueFormatter,
|
||||
GridMajorStyle: chart.Style{
|
||||
Show: true,
|
||||
|
|
|
|||
|
|
@ -60,8 +60,8 @@ func drawChart(res http.ResponseWriter, req *http.Request) {
|
|||
},
|
||||
}
|
||||
|
||||
res.Header().Set("Content-Type", "image/svg+xml")
|
||||
graph.Render(chart.SVG, res)
|
||||
res.Header().Set("Content-Type", "image/png")
|
||||
graph.Render(chart.PNG, res)
|
||||
}
|
||||
|
||||
func xvalues() []time.Time {
|
||||
|
|
|
|||
53
_examples/text_rotation/main.go
Normal file
53
_examples/text_rotation/main.go
Normal file
|
|
@ -0,0 +1,53 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"net/http"
|
||||
|
||||
"github.com/wcharczuk/go-chart"
|
||||
"github.com/wcharczuk/go-chart/drawing"
|
||||
)
|
||||
|
||||
func drawChart(res http.ResponseWriter, req *http.Request) {
|
||||
f, _ := chart.GetDefaultFont()
|
||||
r, _ := chart.PNG(1024, 1024)
|
||||
|
||||
chart.Draw.Text(r, "Test", 64, 64, chart.Style{
|
||||
FontColor: drawing.ColorBlack,
|
||||
FontSize: 18,
|
||||
Font: f,
|
||||
})
|
||||
|
||||
chart.Draw.Text(r, "Test", 64, 64, chart.Style{
|
||||
FontColor: drawing.ColorBlack,
|
||||
FontSize: 18,
|
||||
Font: f,
|
||||
TextRotationDegrees: 45.0,
|
||||
})
|
||||
|
||||
tb := chart.Draw.MeasureText(r, "Test", chart.Style{
|
||||
FontColor: drawing.ColorBlack,
|
||||
FontSize: 18,
|
||||
Font: f,
|
||||
}).Shift(64, 64)
|
||||
|
||||
tbc := tb.Corners().Rotate(45)
|
||||
|
||||
chart.Draw.BoxCorners(r, tbc, chart.Style{
|
||||
StrokeColor: drawing.ColorRed,
|
||||
StrokeWidth: 2,
|
||||
})
|
||||
|
||||
tbcb := tbc.Box()
|
||||
chart.Draw.Box(r, tbcb, chart.Style{
|
||||
StrokeColor: drawing.ColorBlue,
|
||||
StrokeWidth: 2,
|
||||
})
|
||||
|
||||
res.Header().Set("Content-Type", "image/png")
|
||||
r.Save(res)
|
||||
}
|
||||
|
||||
func main() {
|
||||
http.HandleFunc("/", drawChart)
|
||||
http.ListenAndServe(":8080", nil)
|
||||
}
|
||||
115
box.go
115
box.go
|
|
@ -1,6 +1,9 @@
|
|||
package chart
|
||||
|
||||
import "fmt"
|
||||
import (
|
||||
"fmt"
|
||||
"math"
|
||||
)
|
||||
|
||||
// Box represents the main 4 dimensions of a box.
|
||||
type Box struct {
|
||||
|
|
@ -76,8 +79,8 @@ func (b Box) Height() int {
|
|||
|
||||
// Center returns the center of the box
|
||||
func (b Box) Center() (x, y int) {
|
||||
w, h := b.Width(), b.Height()
|
||||
return b.Left + w>>1, b.Top + h>>1
|
||||
w2, h2 := b.Width()>>1, b.Height()>>1
|
||||
return b.Left + w2, b.Top + h2
|
||||
}
|
||||
|
||||
// Aspect returns the aspect ratio of the box.
|
||||
|
|
@ -139,6 +142,16 @@ func (b Box) Shift(x, y int) Box {
|
|||
}
|
||||
}
|
||||
|
||||
// Corners returns the box as a set of corners.
|
||||
func (b Box) Corners() BoxCorners {
|
||||
return BoxCorners{
|
||||
TopLeft: Point{b.Left, b.Top},
|
||||
TopRight: Point{b.Right, b.Top},
|
||||
BottomRight: Point{b.Right, b.Bottom},
|
||||
BottomLeft: Point{b.Left, b.Bottom},
|
||||
}
|
||||
}
|
||||
|
||||
// Fit is functionally the inverse of grow.
|
||||
// Fit maintains the original aspect ratio of the `other` box,
|
||||
// but constrains it to the bounds of the target box.
|
||||
|
|
@ -219,3 +232,99 @@ func (b Box) OuterConstrain(bounds, other Box) Box {
|
|||
}
|
||||
return newBox
|
||||
}
|
||||
|
||||
// BoxCorners is a box with independent corners.
|
||||
type BoxCorners struct {
|
||||
TopLeft, TopRight, BottomRight, BottomLeft Point
|
||||
}
|
||||
|
||||
// Box return the BoxCorners as a regular box.
|
||||
func (bc BoxCorners) Box() Box {
|
||||
return Box{
|
||||
Top: Math.MinInt(bc.TopLeft.Y, bc.TopRight.Y),
|
||||
Left: Math.MinInt(bc.TopLeft.X, bc.BottomLeft.X),
|
||||
Right: Math.MaxInt(bc.TopRight.X, bc.BottomRight.X),
|
||||
Bottom: Math.MaxInt(bc.BottomLeft.Y, bc.BottomRight.Y),
|
||||
}
|
||||
}
|
||||
|
||||
// Width returns the width
|
||||
func (bc BoxCorners) Width() int {
|
||||
minLeft := Math.MinInt(bc.TopLeft.X, bc.BottomLeft.X)
|
||||
maxRight := Math.MaxInt(bc.TopRight.X, bc.BottomRight.X)
|
||||
return maxRight - minLeft
|
||||
}
|
||||
|
||||
// Height returns the height
|
||||
func (bc BoxCorners) Height() int {
|
||||
minTop := Math.MinInt(bc.TopLeft.Y, bc.TopRight.Y)
|
||||
maxBottom := Math.MaxInt(bc.BottomLeft.Y, bc.BottomRight.Y)
|
||||
return maxBottom - minTop
|
||||
}
|
||||
|
||||
// Center returns the center of the box
|
||||
func (bc BoxCorners) Center() (x, y int) {
|
||||
|
||||
left := Math.MeanInt(bc.TopLeft.X, bc.BottomLeft.X)
|
||||
right := Math.MeanInt(bc.TopRight.X, bc.BottomRight.X)
|
||||
x = ((right - left) >> 1) + left
|
||||
|
||||
top := Math.MeanInt(bc.TopLeft.Y, bc.TopRight.Y)
|
||||
bottom := Math.MeanInt(bc.BottomLeft.Y, bc.BottomRight.Y)
|
||||
y = ((bottom - top) >> 1) + top
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// Rotate rotates the box.
|
||||
func (bc BoxCorners) Rotate(thetaDegrees float64) BoxCorners {
|
||||
cx, cy := bc.Center()
|
||||
|
||||
thetaRadians := Math.DegreesToRadians(thetaDegrees)
|
||||
|
||||
tlx, tly := Math.RotateCoordinate(cx, cy, bc.TopLeft.X, bc.TopLeft.Y, thetaRadians)
|
||||
trx, try := Math.RotateCoordinate(cx, cy, bc.TopRight.X, bc.TopRight.Y, thetaRadians)
|
||||
brx, bry := Math.RotateCoordinate(cx, cy, bc.BottomRight.X, bc.BottomRight.Y, thetaRadians)
|
||||
blx, bly := Math.RotateCoordinate(cx, cy, bc.BottomLeft.X, bc.BottomLeft.Y, thetaRadians)
|
||||
|
||||
return BoxCorners{
|
||||
TopLeft: Point{tlx, tly},
|
||||
TopRight: Point{trx, try},
|
||||
BottomRight: Point{brx, bry},
|
||||
BottomLeft: Point{blx, bly},
|
||||
}
|
||||
}
|
||||
|
||||
// Equals returns if the box equals another box.
|
||||
func (bc BoxCorners) Equals(other BoxCorners) bool {
|
||||
return bc.TopLeft.Equals(other.TopLeft) &&
|
||||
bc.TopRight.Equals(other.TopRight) &&
|
||||
bc.BottomRight.Equals(other.BottomRight) &&
|
||||
bc.BottomLeft.Equals(other.BottomLeft)
|
||||
}
|
||||
|
||||
func (bc BoxCorners) String() string {
|
||||
return fmt.Sprintf("BoxC{%s,%s,%s,%s}", bc.TopLeft.String(), bc.TopRight.String(), bc.BottomRight.String(), bc.BottomLeft.String())
|
||||
}
|
||||
|
||||
// Point is an X,Y pair
|
||||
type Point struct {
|
||||
X, Y int
|
||||
}
|
||||
|
||||
// DistanceTo calculates the distance to another point.
|
||||
func (p Point) DistanceTo(other Point) float64 {
|
||||
dx := math.Pow(float64(p.X-other.X), 2)
|
||||
dy := math.Pow(float64(p.Y-other.Y), 2)
|
||||
return math.Pow(dx+dy, 0.5)
|
||||
}
|
||||
|
||||
// Equals returns if a point equals another point.
|
||||
func (p Point) Equals(other Point) bool {
|
||||
return p.X == other.X && p.Y == other.Y
|
||||
}
|
||||
|
||||
// String returns a string representation of the point.
|
||||
func (p Point) String() string {
|
||||
return fmt.Sprintf("P{%d,%d}", p.X, p.Y)
|
||||
}
|
||||
|
|
|
|||
43
box_test.go
43
box_test.go
|
|
@ -143,3 +143,46 @@ func TestBoxShift(t *testing.T) {
|
|||
assert.Equal(11, shifted.Right)
|
||||
assert.Equal(12, shifted.Bottom)
|
||||
}
|
||||
|
||||
func TestBoxCenter(t *testing.T) {
|
||||
assert := assert.New(t)
|
||||
|
||||
b := Box{
|
||||
Top: 10,
|
||||
Left: 10,
|
||||
Right: 20,
|
||||
Bottom: 30,
|
||||
}
|
||||
cx, cy := b.Center()
|
||||
assert.Equal(15, cx)
|
||||
assert.Equal(20, cy)
|
||||
}
|
||||
|
||||
func TestBoxCornersCenter(t *testing.T) {
|
||||
assert := assert.New(t)
|
||||
|
||||
bc := BoxCorners{
|
||||
TopLeft: Point{5, 5},
|
||||
TopRight: Point{15, 5},
|
||||
BottomRight: Point{15, 15},
|
||||
BottomLeft: Point{5, 15},
|
||||
}
|
||||
|
||||
cx, cy := bc.Center()
|
||||
assert.Equal(10, cx)
|
||||
assert.Equal(10, cy)
|
||||
}
|
||||
|
||||
func TestBoxCornersRotate(t *testing.T) {
|
||||
assert := assert.New(t)
|
||||
|
||||
bc := BoxCorners{
|
||||
TopLeft: Point{5, 5},
|
||||
TopRight: Point{15, 5},
|
||||
BottomRight: Point{15, 15},
|
||||
BottomLeft: Point{5, 15},
|
||||
}
|
||||
|
||||
rotated := bc.Rotate(45)
|
||||
assert.True(rotated.TopLeft.Equals(Point{10, 3}), rotated.String())
|
||||
}
|
||||
|
|
|
|||
6
chart.go
6
chart.go
|
|
@ -102,12 +102,12 @@ func (c Chart) Render(rp RendererProvider, w io.Writer) error {
|
|||
|
||||
if c.hasAxes() {
|
||||
xt, yt, yta = c.getAxesTicks(r, xr, yr, yra, xf, yf, yfa)
|
||||
canvasBox = c.getAxisAdjustedCanvasBox(r, canvasBox, xr, yr, yra, xt, yt, yta)
|
||||
canvasBox = c.getAxesAdjustedCanvasBox(r, canvasBox, xr, yr, yra, xt, yt, yta)
|
||||
xr, yr, yra = c.setRangeDomains(canvasBox, xr, yr, yra)
|
||||
|
||||
// do a second pass in case things haven't settled yet.
|
||||
xt, yt, yta = c.getAxesTicks(r, xr, yr, yra, xf, yf, yfa)
|
||||
canvasBox = c.getAxisAdjustedCanvasBox(r, canvasBox, xr, yr, yra, xt, yt, yta)
|
||||
canvasBox = c.getAxesAdjustedCanvasBox(r, canvasBox, xr, yr, yra, xt, yt, yta)
|
||||
xr, yr, yra = c.setRangeDomains(canvasBox, xr, yr, yra)
|
||||
}
|
||||
|
||||
|
|
@ -320,7 +320,7 @@ func (c Chart) getAxesTicks(r Renderer, xr, yr, yar Range, xf, yf, yfa ValueForm
|
|||
return
|
||||
}
|
||||
|
||||
func (c Chart) getAxisAdjustedCanvasBox(r Renderer, canvasBox Box, xr, yr, yra Range, xticks, yticks, yticksAlt []Tick) Box {
|
||||
func (c Chart) getAxesAdjustedCanvasBox(r Renderer, canvasBox Box, xr, yr, yra Range, xticks, yticks, yticksAlt []Tick) Box {
|
||||
axesOuterBox := canvasBox.Clone()
|
||||
if c.XAxis.Style.Show {
|
||||
axesBounds := c.XAxis.Measure(r, canvasBox, xr, c.styleDefaultsAxes(), xticks)
|
||||
|
|
|
|||
42
draw.go
42
draw.go
|
|
@ -140,6 +140,7 @@ func (d draw) HistogramSeries(r Renderer, canvasBox Box, xrange, yrange Range, s
|
|||
// MeasureAnnotation measures how big an annotation would be.
|
||||
func (d draw) MeasureAnnotation(r Renderer, canvasBox Box, style Style, lx, ly int, label string) Box {
|
||||
style.WriteToRenderer(r)
|
||||
defer r.ResetStyle()
|
||||
|
||||
textBox := r.MeasureText(label)
|
||||
textWidth := textBox.Width()
|
||||
|
|
@ -168,6 +169,8 @@ func (d draw) MeasureAnnotation(r Renderer, canvasBox Box, style Style, lx, ly i
|
|||
// Annotation draws an anotation with a renderer.
|
||||
func (d draw) Annotation(r Renderer, canvasBox Box, style Style, lx, ly int, label string) {
|
||||
style.GetTextOptions().WriteToRenderer(r)
|
||||
defer r.ResetStyle()
|
||||
|
||||
textBox := r.MeasureText(label)
|
||||
textWidth := textBox.Width()
|
||||
halfTextHeight := textBox.Height() >> 1
|
||||
|
|
@ -209,7 +212,8 @@ func (d draw) Annotation(r Renderer, canvasBox Box, style Style, lx, ly int, lab
|
|||
|
||||
// Box draws a box with a given style.
|
||||
func (d draw) Box(r Renderer, b Box, s Style) {
|
||||
s.WriteToRenderer(r)
|
||||
s.GetFillAndStrokeOptions().WriteToRenderer(r)
|
||||
defer r.ResetStyle()
|
||||
|
||||
r.MoveTo(b.Left, b.Top)
|
||||
r.LineTo(b.Right, b.Top)
|
||||
|
|
@ -219,19 +223,45 @@ func (d draw) Box(r Renderer, b Box, s Style) {
|
|||
r.FillStroke()
|
||||
}
|
||||
|
||||
func (d draw) BoxRotated(r Renderer, b Box, thetaDegrees float64, s Style) {
|
||||
d.BoxCorners(r, b.Corners().Rotate(thetaDegrees), s)
|
||||
}
|
||||
|
||||
func (d draw) BoxCorners(r Renderer, bc BoxCorners, s Style) {
|
||||
s.GetFillAndStrokeOptions().WriteToRenderer(r)
|
||||
defer r.ResetStyle()
|
||||
|
||||
r.MoveTo(bc.TopLeft.X, bc.TopLeft.Y)
|
||||
r.LineTo(bc.TopRight.X, bc.TopRight.Y)
|
||||
r.LineTo(bc.BottomRight.X, bc.BottomRight.Y)
|
||||
r.LineTo(bc.BottomLeft.X, bc.BottomLeft.Y)
|
||||
r.Close()
|
||||
r.FillStroke()
|
||||
}
|
||||
|
||||
// DrawText draws text with a given style.
|
||||
func (d draw) Text(r Renderer, text string, x, y int, style Style) {
|
||||
style.GetTextOptions().WriteToRenderer(r)
|
||||
defer r.ResetStyle()
|
||||
|
||||
r.Text(text, x, y)
|
||||
}
|
||||
|
||||
func (d draw) MeasureText(r Renderer, text string, style Style) Box {
|
||||
style.GetTextOptions().WriteToRenderer(r)
|
||||
defer r.ResetStyle()
|
||||
|
||||
return r.MeasureText(text)
|
||||
}
|
||||
|
||||
// TextWithin draws the text within a given box.
|
||||
func (d draw) TextWithin(r Renderer, text string, box Box, style Style) {
|
||||
style.GetTextOptions().WriteToRenderer(r)
|
||||
defer r.ResetStyle()
|
||||
|
||||
lines := Text.WrapFit(r, text, box.Width(), style)
|
||||
linesBox := Text.MeasureLines(r, lines, style)
|
||||
|
||||
style.GetTextOptions().WriteToRenderer(r)
|
||||
|
||||
y := box.Top
|
||||
|
||||
switch style.GetTextVerticalAlign() {
|
||||
|
|
@ -252,7 +282,11 @@ func (d draw) TextWithin(r Renderer, text string, box Box, style Style) {
|
|||
default:
|
||||
tx = box.Left
|
||||
}
|
||||
ty = y + lineBox.Height()
|
||||
if style.TextRotationDegrees == 0 {
|
||||
ty = y + lineBox.Height()
|
||||
} else {
|
||||
ty = y
|
||||
}
|
||||
|
||||
d.Text(r, line, tx, ty, style)
|
||||
y += lineBox.Height() + style.GetTextLineSpacing()
|
||||
|
|
|
|||
52
file_util.go
Normal file
52
file_util.go
Normal file
|
|
@ -0,0 +1,52 @@
|
|||
package chart
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"io"
|
||||
"os"
|
||||
|
||||
exception "github.com/blendlabs/go-exception"
|
||||
)
|
||||
|
||||
var (
|
||||
// File contains file utility functions
|
||||
File = fileUtil{}
|
||||
)
|
||||
|
||||
type fileUtil struct{}
|
||||
|
||||
// ReadByLines reads a file and calls the handler for each line.
|
||||
func (fu fileUtil) ReadByLines(filePath string, handler func(line string)) error {
|
||||
if f, err := os.Open(filePath); err == nil {
|
||||
defer f.Close()
|
||||
|
||||
scanner := bufio.NewScanner(f)
|
||||
for scanner.Scan() {
|
||||
line := scanner.Text()
|
||||
handler(line)
|
||||
}
|
||||
} else {
|
||||
return exception.Wrap(err)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// ReadByChunks reads a file in `chunkSize` pieces, dispatched to the handler.
|
||||
func (fu fileUtil) ReadByChunks(filePath string, chunkSize int, handler func(line []byte)) error {
|
||||
if f, err := os.Open(filePath); err == nil {
|
||||
defer f.Close()
|
||||
|
||||
chunk := make([]byte, chunkSize)
|
||||
for {
|
||||
readBytes, err := f.Read(chunk)
|
||||
if err == io.EOF {
|
||||
break
|
||||
}
|
||||
readData := chunk[:readBytes]
|
||||
handler(readData)
|
||||
}
|
||||
} else {
|
||||
return exception.Wrap(err)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
|
@ -54,9 +54,7 @@ func Legend(c *Chart, userDefaults ...Style) Renderable {
|
|||
Bottom: legend.Top + legendPadding.Top,
|
||||
}
|
||||
|
||||
r.SetFont(legendStyle.GetFont())
|
||||
r.SetFontColor(legendStyle.GetFontColor())
|
||||
r.SetFontSize(legendStyle.GetFontSize())
|
||||
legendStyle.GetTextOptions().WriteToRenderer(r)
|
||||
|
||||
// measure
|
||||
labelCount := 0
|
||||
|
|
@ -79,6 +77,8 @@ func Legend(c *Chart, userDefaults ...Style) Renderable {
|
|||
|
||||
Draw.Box(r, legend, legendStyle)
|
||||
|
||||
legendStyle.GetTextOptions().WriteToRenderer(r)
|
||||
|
||||
ycursor := legendContent.Top
|
||||
tx := legendContent.Left
|
||||
legendCount := 0
|
||||
|
|
|
|||
|
|
@ -33,12 +33,12 @@ func (mhr MarketHoursRange) IsZero() bool {
|
|||
|
||||
// GetMin returns the min value.
|
||||
func (mhr MarketHoursRange) GetMin() float64 {
|
||||
return TimeToFloat64(mhr.Min)
|
||||
return Time.ToFloat64(mhr.Min)
|
||||
}
|
||||
|
||||
// GetMax returns the max value.
|
||||
func (mhr MarketHoursRange) GetMax() float64 {
|
||||
return TimeToFloat64(mhr.GetEffectiveMax())
|
||||
return Time.ToFloat64(mhr.GetEffectiveMax())
|
||||
}
|
||||
|
||||
// GetEffectiveMax gets either the close on the max, or the max itself.
|
||||
|
|
@ -52,13 +52,13 @@ func (mhr MarketHoursRange) GetEffectiveMax() time.Time {
|
|||
|
||||
// SetMin sets the min value.
|
||||
func (mhr *MarketHoursRange) SetMin(min float64) {
|
||||
mhr.Min = Float64ToTime(min)
|
||||
mhr.Min = Time.FromFloat64(min)
|
||||
mhr.Min = mhr.Min.In(mhr.GetTimezone())
|
||||
}
|
||||
|
||||
// SetMax sets the max value.
|
||||
func (mhr *MarketHoursRange) SetMax(max float64) {
|
||||
mhr.Max = Float64ToTime(max)
|
||||
mhr.Max = Time.FromFloat64(max)
|
||||
mhr.Max = mhr.Max.In(mhr.GetTimezone())
|
||||
}
|
||||
|
||||
|
|
@ -159,7 +159,7 @@ func (mhr *MarketHoursRange) makeTicks(vf ValueFormatter, times []time.Time) []T
|
|||
ticks := make([]Tick, len(times))
|
||||
for index, t := range times {
|
||||
ticks[index] = Tick{
|
||||
Value: TimeToFloat64(t),
|
||||
Value: Time.ToFloat64(t),
|
||||
Label: vf(t),
|
||||
}
|
||||
}
|
||||
|
|
@ -172,7 +172,7 @@ func (mhr MarketHoursRange) String() string {
|
|||
|
||||
// Translate maps a given value into the ContinuousRange space.
|
||||
func (mhr MarketHoursRange) Translate(value float64) int {
|
||||
valueTime := Float64ToTime(value)
|
||||
valueTime := Time.FromFloat64(value)
|
||||
valueTimeEastern := valueTime.In(Date.Eastern())
|
||||
totalSeconds := Date.CalculateMarketSecondsBetween(mhr.Min, mhr.GetEffectiveMax(), mhr.GetMarketOpen(), mhr.GetMarketClose(), mhr.HolidayProvider)
|
||||
valueDelta := Date.CalculateMarketSecondsBetween(mhr.Min, valueTimeEastern, mhr.GetMarketOpen(), mhr.GetMarketClose(), mhr.HolidayProvider)
|
||||
|
|
|
|||
|
|
@ -35,9 +35,9 @@ func TestMarketHoursRangeTranslate(t *testing.T) {
|
|||
|
||||
weds := time.Date(2016, 07, 20, 9, 30, 0, 0, Date.Eastern())
|
||||
|
||||
assert.Equal(0, r.Translate(TimeToFloat64(r.Min)))
|
||||
assert.Equal(400, r.Translate(TimeToFloat64(weds)))
|
||||
assert.Equal(1000, r.Translate(TimeToFloat64(r.Max)))
|
||||
assert.Equal(0, r.Translate(Time.ToFloat64(r.Min)))
|
||||
assert.Equal(400, r.Translate(Time.ToFloat64(weds)))
|
||||
assert.Equal(1000, r.Translate(Time.ToFloat64(r.Max)))
|
||||
}
|
||||
|
||||
func TestMarketHoursRangeGetTicks(t *testing.T) {
|
||||
|
|
@ -67,6 +67,6 @@ func TestMarketHoursRangeGetTicks(t *testing.T) {
|
|||
ticks := ra.GetTicks(r, defaults, TimeValueFormatter)
|
||||
assert.NotEmpty(ticks)
|
||||
assert.Len(ticks, 5)
|
||||
assert.NotEqual(TimeToFloat64(ra.Min), ticks[0].Value)
|
||||
assert.NotEqual(Time.ToFloat64(ra.Min), ticks[0].Value)
|
||||
assert.NotEmpty(ticks[0].Label)
|
||||
}
|
||||
|
|
|
|||
|
|
@ -19,16 +19,6 @@ const (
|
|||
_r2d = (180.0 / math.Pi)
|
||||
)
|
||||
|
||||
// TimeToFloat64 returns a float64 representation of a time.
|
||||
func TimeToFloat64(t time.Time) float64 {
|
||||
return float64(t.UnixNano())
|
||||
}
|
||||
|
||||
// Float64ToTime returns a time from a float64.
|
||||
func Float64ToTime(tf float64) time.Time {
|
||||
return time.Unix(0, int64(tf))
|
||||
}
|
||||
|
||||
var (
|
||||
// Math contains helper methods for common math operations.
|
||||
Math = &mathUtil{}
|
||||
|
|
@ -144,6 +134,16 @@ func (m mathUtil) AbsInt(value int) int {
|
|||
return value
|
||||
}
|
||||
|
||||
// Mean returns the mean of a set of values
|
||||
func (m mathUtil) Mean(values ...float64) float64 {
|
||||
return m.Sum(values...) / float64(len(values))
|
||||
}
|
||||
|
||||
// MeanInt returns the mean of a set of integer values.
|
||||
func (m mathUtil) MeanInt(values ...int) int {
|
||||
return m.SumInt(values...) / len(values)
|
||||
}
|
||||
|
||||
// Sum sums a set of values.
|
||||
func (m mathUtil) Sum(values ...float64) float64 {
|
||||
var total float64
|
||||
|
|
@ -214,9 +214,18 @@ func (m mathUtil) DegreesToCompass(deg float64) float64 {
|
|||
}
|
||||
|
||||
// CirclePoint returns the absolute position of a circle diameter point given
|
||||
// by the radius and the angle.
|
||||
func (m mathUtil) CirclePoint(cx, cy int, radius, angleRadians float64) (x, y int) {
|
||||
x = cx + int(radius*math.Sin(angleRadians))
|
||||
y = cy - int(radius*math.Cos(angleRadians))
|
||||
// by the radius and the theta.
|
||||
func (m mathUtil) CirclePoint(cx, cy int, radius, thetaRadians float64) (x, y int) {
|
||||
x = cx + int(radius*math.Sin(thetaRadians))
|
||||
y = cy - int(radius*math.Cos(thetaRadians))
|
||||
return
|
||||
}
|
||||
|
||||
func (m mathUtil) RotateCoordinate(cx, cy, x, y int, thetaRadians float64) (rx, ry int) {
|
||||
tempX, tempY := float64(x-cx), float64(y-cy)
|
||||
rotatedX := tempX*math.Cos(thetaRadians) - tempY*math.Sin(thetaRadians)
|
||||
rotatedY := tempX*math.Sin(thetaRadians) + tempY*math.Cos(thetaRadians)
|
||||
rx = int(rotatedX) + cx
|
||||
ry = int(rotatedY) + cy
|
||||
return
|
||||
}
|
||||
|
|
@ -160,3 +160,25 @@ func TestRadianAdd(t *testing.T) {
|
|||
assert.Equal(_pi, Math.RadianAdd(_pi, _2pi))
|
||||
assert.Equal(_pi, Math.RadianAdd(_pi, -_2pi))
|
||||
}
|
||||
|
||||
func TestRotateCoordinate90(t *testing.T) {
|
||||
assert := assert.New(t)
|
||||
|
||||
cx, cy := 10, 10
|
||||
x, y := 5, 10
|
||||
|
||||
rx, ry := Math.RotateCoordinate(cx, cy, x, y, Math.DegreesToRadians(90))
|
||||
assert.Equal(10, rx)
|
||||
assert.Equal(5, ry)
|
||||
}
|
||||
|
||||
func TestRotateCoordinate45(t *testing.T) {
|
||||
assert := assert.New(t)
|
||||
|
||||
cx, cy := 10, 10
|
||||
x, y := 5, 10
|
||||
|
||||
rx, ry := Math.RotateCoordinate(cx, cy, x, y, Math.DegreesToRadians(45))
|
||||
assert.Equal(7, rx)
|
||||
assert.Equal(7, ry)
|
||||
}
|
||||
|
|
@ -28,11 +28,16 @@ type rasterRenderer struct {
|
|||
i *image.RGBA
|
||||
gc *drawing.RasterGraphicContext
|
||||
|
||||
rotateRadians float64
|
||||
rotateRadians *float64
|
||||
|
||||
s Style
|
||||
}
|
||||
|
||||
func (rr *rasterRenderer) ResetStyle() {
|
||||
rr.s = Style{Font: rr.s.Font}
|
||||
rr.ClearTextRotation()
|
||||
}
|
||||
|
||||
// GetDPI returns the dpi.
|
||||
func (rr *rasterRenderer) GetDPI() float64 {
|
||||
return rr.gc.GetDPI()
|
||||
|
|
@ -177,35 +182,40 @@ func (rr *rasterRenderer) MeasureText(body string) Box {
|
|||
t = 0
|
||||
}
|
||||
|
||||
return Box{
|
||||
textBox := Box{
|
||||
Top: int(math.Ceil(t)),
|
||||
Left: int(math.Ceil(l)),
|
||||
Right: int(math.Ceil(r)),
|
||||
Bottom: int(math.Ceil(b)),
|
||||
}
|
||||
if rr.rotateRadians == nil {
|
||||
return textBox
|
||||
}
|
||||
|
||||
return textBox.Corners().Rotate(Math.RadiansToDegrees(*rr.rotateRadians)).Box()
|
||||
}
|
||||
|
||||
// SetTextRotation sets a text rotation.
|
||||
func (rr *rasterRenderer) SetTextRotation(radians float64) {
|
||||
rr.rotateRadians = radians
|
||||
rr.rotateRadians = &radians
|
||||
}
|
||||
|
||||
func (rr *rasterRenderer) getCoords(x, y int) (xf, yf int) {
|
||||
if rr.rotateRadians == 0 {
|
||||
if rr.rotateRadians == nil {
|
||||
xf = x
|
||||
yf = y
|
||||
return
|
||||
}
|
||||
|
||||
rr.gc.Translate(float64(x), float64(y))
|
||||
rr.gc.Rotate(rr.rotateRadians)
|
||||
rr.gc.Rotate(*rr.rotateRadians)
|
||||
return
|
||||
}
|
||||
|
||||
// ClearTextRotation clears text rotation.
|
||||
func (rr *rasterRenderer) ClearTextRotation() {
|
||||
rr.gc.SetMatrixTransform(drawing.NewIdentityMatrix())
|
||||
rr.rotateRadians = 0
|
||||
rr.rotateRadians = nil
|
||||
}
|
||||
|
||||
// Save implements the interface method.
|
||||
|
|
|
|||
|
|
@ -9,6 +9,9 @@ import (
|
|||
|
||||
// Renderer represents the basic methods required to draw a chart.
|
||||
type Renderer interface {
|
||||
// ResetStyle should reset any style related settings on the renderer.
|
||||
ResetStyle()
|
||||
|
||||
// GetDPI gets the DPI for the renderer.
|
||||
GetDPI() float64
|
||||
|
||||
|
|
|
|||
18
style.go
18
style.go
|
|
@ -33,6 +33,7 @@ type Style struct {
|
|||
TextVerticalAlign TextVerticalAlign
|
||||
TextWrap TextWrap
|
||||
TextLineSpacing int
|
||||
TextRotationDegrees float64 //0 is unset or normal
|
||||
}
|
||||
|
||||
// IsZero returns if the object is set or not.
|
||||
|
|
@ -241,6 +242,16 @@ func (s Style) GetTextLineSpacing(defaults ...int) int {
|
|||
return s.TextLineSpacing
|
||||
}
|
||||
|
||||
// GetTextRotationDegrees returns the text rotation in degrees.
|
||||
func (s Style) GetTextRotationDegrees(defaults ...float64) float64 {
|
||||
if s.TextRotationDegrees == 0 {
|
||||
if len(defaults) > 0 {
|
||||
return defaults[0]
|
||||
}
|
||||
}
|
||||
return s.TextRotationDegrees
|
||||
}
|
||||
|
||||
// WriteToRenderer passes the style's options to a renderer.
|
||||
func (s Style) WriteToRenderer(r Renderer) {
|
||||
r.SetStrokeColor(s.GetStrokeColor())
|
||||
|
|
@ -250,6 +261,11 @@ func (s Style) WriteToRenderer(r Renderer) {
|
|||
r.SetFont(s.GetFont())
|
||||
r.SetFontColor(s.GetFontColor())
|
||||
r.SetFontSize(s.GetFontSize())
|
||||
|
||||
r.ClearTextRotation()
|
||||
if s.GetTextRotationDegrees() != 0 {
|
||||
r.SetTextRotation(Math.DegreesToRadians(s.GetTextRotationDegrees()))
|
||||
}
|
||||
}
|
||||
|
||||
// WriteDrawingOptionsToRenderer passes just the drawing style options to a renderer.
|
||||
|
|
@ -281,6 +297,7 @@ func (s Style) InheritFrom(defaults Style) (final Style) {
|
|||
final.TextVerticalAlign = s.GetTextVerticalAlign(defaults.TextVerticalAlign)
|
||||
final.TextWrap = s.GetTextWrap(defaults.TextWrap)
|
||||
final.TextLineSpacing = s.GetTextLineSpacing(defaults.TextLineSpacing)
|
||||
final.TextRotationDegrees = s.GetTextRotationDegrees(defaults.TextRotationDegrees)
|
||||
return
|
||||
}
|
||||
|
||||
|
|
@ -320,5 +337,6 @@ func (s Style) GetTextOptions() Style {
|
|||
TextVerticalAlign: s.TextVerticalAlign,
|
||||
TextWrap: s.TextWrap,
|
||||
TextLineSpacing: s.TextLineSpacing,
|
||||
TextRotationDegrees: s.TextRotationDegrees,
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -30,14 +30,14 @@ func (ts TimeSeries) Len() int {
|
|||
|
||||
// GetValue gets a value at a given index.
|
||||
func (ts TimeSeries) GetValue(index int) (x, y float64) {
|
||||
x = TimeToFloat64(ts.XValues[index])
|
||||
x = Time.ToFloat64(ts.XValues[index])
|
||||
y = ts.YValues[index]
|
||||
return
|
||||
}
|
||||
|
||||
// GetLastValue gets the last value.
|
||||
func (ts TimeSeries) GetLastValue() (x, y float64) {
|
||||
x = TimeToFloat64(ts.XValues[len(ts.XValues)-1])
|
||||
x = Time.ToFloat64(ts.XValues[len(ts.XValues)-1])
|
||||
y = ts.YValues[len(ts.YValues)-1]
|
||||
return
|
||||
}
|
||||
|
|
|
|||
20
time_util.go
Normal file
20
time_util.go
Normal file
|
|
@ -0,0 +1,20 @@
|
|||
package chart
|
||||
|
||||
import "time"
|
||||
|
||||
var (
|
||||
// Time contains time utility functions.
|
||||
Time = timeUtil{}
|
||||
)
|
||||
|
||||
type timeUtil struct{}
|
||||
|
||||
// TimeToFloat64 returns a float64 representation of a time.
|
||||
func (tu timeUtil) ToFloat64(t time.Time) float64 {
|
||||
return float64(t.UnixNano())
|
||||
}
|
||||
|
||||
// Float64ToTime returns a time from a float64.
|
||||
func (tu timeUtil) FromFloat64(tf float64) time.Time {
|
||||
return time.Unix(0, int64(tf))
|
||||
}
|
||||
|
|
@ -11,7 +11,7 @@ func TestTimeValueFormatterWithFormat(t *testing.T) {
|
|||
assert := assert.New(t)
|
||||
|
||||
d := time.Now()
|
||||
di := TimeToFloat64(d)
|
||||
di := Time.ToFloat64(d)
|
||||
df := float64(di)
|
||||
|
||||
s := TimeValueFormatterWithFormat(d, DefaultDateFormat)
|
||||
|
|
|
|||
|
|
@ -32,11 +32,15 @@ type vectorRenderer struct {
|
|||
b *bytes.Buffer
|
||||
c *canvas
|
||||
s *Style
|
||||
r float64
|
||||
p []string
|
||||
fc *font.Drawer
|
||||
}
|
||||
|
||||
func (vr *vectorRenderer) ResetStyle() {
|
||||
vr.s = &Style{Font: vr.s.Font}
|
||||
vr.fc = nil
|
||||
}
|
||||
|
||||
// GetDPI returns the dpi.
|
||||
func (vr *vectorRenderer) GetDPI() float64 {
|
||||
return vr.dpi
|
||||
|
|
@ -168,18 +172,22 @@ func (vr *vectorRenderer) MeasureText(body string) (box Box) {
|
|||
|
||||
box.Right = w
|
||||
box.Bottom = int(drawing.PointsToPixels(vr.dpi, vr.s.FontSize))
|
||||
if vr.c.textTheta == nil {
|
||||
return
|
||||
}
|
||||
box = box.Corners().Rotate(Math.RadiansToDegrees(*vr.c.textTheta)).Box()
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// SetTextRotation sets the text rotation.
|
||||
func (vr *vectorRenderer) SetTextRotation(radians float64) {
|
||||
vr.c.r = radians
|
||||
vr.c.textTheta = &radians
|
||||
}
|
||||
|
||||
// ClearTextRotation clears the text rotation.
|
||||
func (vr *vectorRenderer) ClearTextRotation() {
|
||||
vr.c.r = 0
|
||||
vr.c.textTheta = nil
|
||||
}
|
||||
|
||||
// Save saves the renderer's contents to a writer.
|
||||
|
|
@ -196,11 +204,11 @@ func newCanvas(w io.Writer) *canvas {
|
|||
}
|
||||
|
||||
type canvas struct {
|
||||
w io.Writer
|
||||
dpi float64
|
||||
r float64
|
||||
width int
|
||||
height int
|
||||
w io.Writer
|
||||
dpi float64
|
||||
textTheta *float64
|
||||
width int
|
||||
height int
|
||||
}
|
||||
|
||||
func (c *canvas) Start(width, height int) {
|
||||
|
|
@ -218,10 +226,10 @@ func (c *canvas) Path(d string, style Style) {
|
|||
}
|
||||
|
||||
func (c *canvas) Text(x, y int, body string, style Style) {
|
||||
if c.r == 0 {
|
||||
if c.textTheta == nil {
|
||||
c.w.Write([]byte(fmt.Sprintf(`<text x="%d" y="%d" style="%s">%s</text>`, x, y, c.styleAsSVG(style), body)))
|
||||
} else {
|
||||
transform := fmt.Sprintf(` transform="rotate(%0.2f,%d,%d)"`, Math.RadiansToDegrees(c.r), x, y)
|
||||
transform := fmt.Sprintf(` transform="rotate(%0.2f,%d,%d)"`, Math.RadiansToDegrees(*c.textTheta), x, y)
|
||||
c.w.Write([]byte(fmt.Sprintf(`<text x="%d" y="%d" style="%s"%s>%s</text>`, x, y, c.styleAsSVG(style), transform, body)))
|
||||
}
|
||||
}
|
||||
|
|
|
|||
47
xaxis.go
47
xaxis.go
|
|
@ -7,13 +7,15 @@ import (
|
|||
|
||||
// XAxis represents the horizontal axis.
|
||||
type XAxis struct {
|
||||
Name string
|
||||
NameStyle Style
|
||||
Name string
|
||||
NameStyle Style
|
||||
|
||||
Style Style
|
||||
ValueFormatter ValueFormatter
|
||||
Range Range
|
||||
Ticks []Tick
|
||||
|
||||
TickStyle Style
|
||||
Ticks []Tick
|
||||
TickPosition TickPosition
|
||||
|
||||
GridLines []GridLine
|
||||
|
|
@ -68,20 +70,20 @@ func (xa XAxis) GetGridLines(ticks []Tick) []GridLine {
|
|||
|
||||
// Measure returns the bounds of the axis.
|
||||
func (xa XAxis) Measure(r Renderer, canvasBox Box, ra Range, defaults Style, ticks []Tick) Box {
|
||||
tickStyle := xa.Style.InheritFrom(defaults)
|
||||
tickStyle := xa.TickStyle.InheritFrom(xa.Style.InheritFrom(defaults))
|
||||
sort.Sort(Ticks(ticks))
|
||||
|
||||
tp := xa.GetTickPosition()
|
||||
|
||||
var ltx, rtx int
|
||||
var tx, ty int
|
||||
var left, right, bottom = math.MaxInt32, 0, 0
|
||||
for index, t := range ticks {
|
||||
v := t.Value
|
||||
tickStyle.GetTextOptions().WriteToRenderer(r)
|
||||
tb := r.MeasureText(t.Label)
|
||||
tb := Draw.MeasureText(r, t.Label, tickStyle.GetTextOptions())
|
||||
|
||||
var ltx, rtx int
|
||||
tx := canvasBox.Left + ra.Translate(v)
|
||||
ty := canvasBox.Bottom + DefaultXAxisMargin + tb.Height()
|
||||
tx = canvasBox.Left + ra.Translate(v)
|
||||
ty = canvasBox.Bottom + DefaultXAxisMargin + tb.Height()
|
||||
switch tp {
|
||||
case TickPositionUnderTick, TickPositionUnset:
|
||||
ltx = tx - tb.Width()>>1
|
||||
|
|
@ -101,7 +103,7 @@ func (xa XAxis) Measure(r Renderer, canvasBox Box, ra Range, defaults Style, tic
|
|||
}
|
||||
|
||||
if xa.NameStyle.Show && len(xa.Name) > 0 {
|
||||
tb := r.MeasureText(xa.Name)
|
||||
tb := Draw.MeasureText(r, xa.Name, xa.NameStyle.InheritFrom(defaults))
|
||||
bottom += DefaultXAxisMargin + tb.Height()
|
||||
}
|
||||
|
||||
|
|
@ -115,7 +117,7 @@ func (xa XAxis) Measure(r Renderer, canvasBox Box, ra Range, defaults Style, tic
|
|||
|
||||
// Render renders the axis
|
||||
func (xa XAxis) Render(r Renderer, canvasBox Box, ra Range, defaults Style, ticks []Tick) {
|
||||
tickStyle := xa.Style.InheritFrom(defaults)
|
||||
tickStyle := xa.TickStyle.InheritFrom(xa.Style.InheritFrom(defaults))
|
||||
|
||||
tickStyle.GetStrokeOptions().WriteToRenderer(r)
|
||||
r.MoveTo(canvasBox.Left, canvasBox.Bottom)
|
||||
|
|
@ -139,25 +141,31 @@ func (xa XAxis) Render(r Renderer, canvasBox Box, ra Range, defaults Style, tick
|
|||
r.LineTo(tx, canvasBox.Bottom+DefaultVerticalTickHeight)
|
||||
r.Stroke()
|
||||
|
||||
tickStyle.GetTextOptions().WriteToRenderer(r)
|
||||
tb := r.MeasureText(t.Label)
|
||||
tickWithAxisStyle := xa.TickStyle.InheritFrom(xa.Style.InheritFrom(defaults))
|
||||
tb := Draw.MeasureText(r, t.Label, tickWithAxisStyle)
|
||||
|
||||
switch tp {
|
||||
case TickPositionUnderTick, TickPositionUnset:
|
||||
ty = canvasBox.Bottom + DefaultXAxisMargin + tb.Height()
|
||||
r.Text(t.Label, tx-tb.Width()>>1, ty)
|
||||
if tickStyle.TextRotationDegrees == 0 {
|
||||
tx = tx - tb.Width()>>1
|
||||
ty = canvasBox.Bottom + DefaultXAxisMargin + tb.Height()
|
||||
} else {
|
||||
ty = canvasBox.Bottom + (2 * DefaultXAxisMargin)
|
||||
}
|
||||
Draw.Text(r, t.Label, tx, ty, tickWithAxisStyle)
|
||||
maxTextHeight = Math.MaxInt(maxTextHeight, tb.Height())
|
||||
break
|
||||
case TickPositionBetweenTicks:
|
||||
if index > 0 {
|
||||
llx := ra.Translate(ticks[index-1].Value)
|
||||
ltx := canvasBox.Left + llx
|
||||
finalTickStyle := tickStyle.InheritFrom(Style{TextHorizontalAlign: TextHorizontalAlignCenter})
|
||||
finalTickStyle := tickWithAxisStyle.InheritFrom(Style{TextHorizontalAlign: TextHorizontalAlignCenter})
|
||||
|
||||
Draw.TextWithin(r, t.Label, Box{
|
||||
Left: ltx,
|
||||
Right: tx,
|
||||
Top: canvasBox.Bottom + DefaultXAxisMargin,
|
||||
Bottom: canvasBox.Bottom + DefaultXAxisMargin + tb.Height(),
|
||||
Bottom: canvasBox.Bottom + DefaultXAxisMargin,
|
||||
}, finalTickStyle)
|
||||
|
||||
ftb := Text.MeasureLines(r, Text.WrapFit(r, t.Label, tx-ltx, finalTickStyle), finalTickStyle)
|
||||
|
|
@ -169,11 +177,10 @@ func (xa XAxis) Render(r Renderer, canvasBox Box, ra Range, defaults Style, tick
|
|||
|
||||
nameStyle := xa.NameStyle.InheritFrom(defaults)
|
||||
if xa.NameStyle.Show && len(xa.Name) > 0 {
|
||||
nameStyle.GetTextOptions().WriteToRenderer(r)
|
||||
tb := r.MeasureText(xa.Name)
|
||||
tb := Draw.MeasureText(r, xa.Name, nameStyle)
|
||||
tx := canvasBox.Right - (canvasBox.Width()>>1 + tb.Width()>>1)
|
||||
ty := canvasBox.Bottom + DefaultXAxisMargin + maxTextHeight + DefaultXAxisMargin + tb.Height()
|
||||
r.Text(xa.Name, tx, ty)
|
||||
Draw.Text(r, xa.Name, tx, ty, nameStyle)
|
||||
}
|
||||
|
||||
if xa.GridMajorStyle.Show || xa.GridMinorStyle.Show {
|
||||
|
|
|
|||
55
yaxis.go
55
yaxis.go
|
|
@ -20,9 +20,10 @@ type YAxis struct {
|
|||
ValueFormatter ValueFormatter
|
||||
Range Range
|
||||
|
||||
TickStyle Style
|
||||
Ticks []Tick
|
||||
GridLines []GridLine
|
||||
|
||||
GridLines []GridLine
|
||||
GridMajorStyle Style
|
||||
GridMinorStyle Style
|
||||
}
|
||||
|
|
@ -42,6 +43,11 @@ func (ya YAxis) GetStyle() Style {
|
|||
return ya.Style
|
||||
}
|
||||
|
||||
// GetTickStyle returns the tick style.
|
||||
func (ya YAxis) GetTickStyle() Style {
|
||||
return ya.TickStyle
|
||||
}
|
||||
|
||||
// GetTicks returns the ticks for a series.
|
||||
// The coalesce priority is:
|
||||
// - User Supplied Ticks (i.e. Ticks array on the axis itself).
|
||||
|
|
@ -68,8 +74,6 @@ func (ya YAxis) GetGridLines(ticks []Tick) []GridLine {
|
|||
|
||||
// Measure returns the bounds of the axis.
|
||||
func (ya YAxis) Measure(r Renderer, canvasBox Box, ra Range, defaults Style, ticks []Tick) Box {
|
||||
ya.Style.InheritFrom(defaults).WriteToRenderer(r)
|
||||
|
||||
sort.Sort(Ticks(ticks))
|
||||
|
||||
var tx int
|
||||
|
|
@ -79,6 +83,7 @@ func (ya YAxis) Measure(r Renderer, canvasBox Box, ra Range, defaults Style, tic
|
|||
tx = canvasBox.Left - DefaultYAxisMargin
|
||||
}
|
||||
|
||||
ya.TickStyle.InheritFrom(ya.Style.InheritFrom(defaults)).WriteToRenderer(r)
|
||||
var minx, maxx, miny, maxy = math.MaxInt32, 0, math.MaxInt32, 0
|
||||
var maxTextHeight int
|
||||
for _, t := range ticks {
|
||||
|
|
@ -86,14 +91,13 @@ func (ya YAxis) Measure(r Renderer, canvasBox Box, ra Range, defaults Style, tic
|
|||
ly := canvasBox.Bottom - ra.Translate(v)
|
||||
|
||||
tb := r.MeasureText(t.Label)
|
||||
tbh2 := tb.Height() >> 1
|
||||
finalTextX := tx
|
||||
if ya.AxisType == YAxisSecondary {
|
||||
finalTextX = tx - tb.Width()
|
||||
}
|
||||
|
||||
if tb.Height() > maxTextHeight {
|
||||
maxTextHeight = tb.Height()
|
||||
}
|
||||
maxTextHeight = Math.MaxInt(tb.Height(), maxTextHeight)
|
||||
|
||||
if ya.AxisType == YAxisPrimary {
|
||||
minx = canvasBox.Right
|
||||
|
|
@ -102,8 +106,9 @@ func (ya YAxis) Measure(r Renderer, canvasBox Box, ra Range, defaults Style, tic
|
|||
minx = Math.MinInt(minx, finalTextX)
|
||||
maxx = Math.MaxInt(maxx, tx)
|
||||
}
|
||||
miny = Math.MinInt(miny, ly-tb.Height()>>1)
|
||||
maxy = Math.MaxInt(maxy, ly+tb.Height()>>1)
|
||||
|
||||
miny = Math.MinInt(miny, ly-tbh2)
|
||||
maxy = Math.MaxInt(maxy, ly+tbh2)
|
||||
}
|
||||
|
||||
if ya.NameStyle.Show && len(ya.Name) > 0 {
|
||||
|
|
@ -120,11 +125,12 @@ func (ya YAxis) Measure(r Renderer, canvasBox Box, ra Range, defaults Style, tic
|
|||
|
||||
// Render renders the axis.
|
||||
func (ya YAxis) Render(r Renderer, canvasBox Box, ra Range, defaults Style, ticks []Tick) {
|
||||
ya.Style.InheritFrom(defaults).WriteToRenderer(r)
|
||||
tickStyle := ya.TickStyle.InheritFrom(ya.Style.InheritFrom(defaults))
|
||||
tickStyle.WriteToRenderer(r)
|
||||
|
||||
sort.Sort(Ticks(ticks))
|
||||
|
||||
sw := ya.Style.GetStrokeWidth(defaults.StrokeWidth)
|
||||
sw := tickStyle.GetStrokeWidth(defaults.StrokeWidth)
|
||||
|
||||
var lx int
|
||||
var tx int
|
||||
|
|
@ -141,23 +147,30 @@ func (ya YAxis) Render(r Renderer, canvasBox Box, ra Range, defaults Style, tick
|
|||
r.Stroke()
|
||||
|
||||
var maxTextWidth int
|
||||
var finalTextX, finalTextY int
|
||||
for _, t := range ticks {
|
||||
v := t.Value
|
||||
ly := canvasBox.Bottom - ra.Translate(v)
|
||||
|
||||
tb := r.MeasureText(t.Label)
|
||||
tb := Draw.MeasureText(r, t.Label, tickStyle)
|
||||
|
||||
if tb.Width() > maxTextWidth {
|
||||
maxTextWidth = tb.Width()
|
||||
}
|
||||
|
||||
finalTextX := tx
|
||||
finalTextY := ly + tb.Height()>>1
|
||||
if ya.AxisType == YAxisSecondary {
|
||||
finalTextX = tx - tb.Width()
|
||||
} else {
|
||||
finalTextX = tx
|
||||
}
|
||||
|
||||
r.Text(t.Label, finalTextX, finalTextY)
|
||||
if tickStyle.TextRotationDegrees == 0 {
|
||||
finalTextY = ly + tb.Height()>>1
|
||||
} else {
|
||||
finalTextY = ly
|
||||
}
|
||||
|
||||
tickStyle.WriteToRenderer(r)
|
||||
|
||||
r.MoveTo(lx, ly)
|
||||
if ya.AxisType == YAxisPrimary {
|
||||
|
|
@ -166,15 +179,14 @@ func (ya YAxis) Render(r Renderer, canvasBox Box, ra Range, defaults Style, tick
|
|||
r.LineTo(lx-DefaultHorizontalTickWidth, ly)
|
||||
}
|
||||
r.Stroke()
|
||||
|
||||
Draw.Text(r, t.Label, finalTextX, finalTextY, tickStyle)
|
||||
}
|
||||
|
||||
nameStyle := ya.NameStyle.InheritFrom(defaults)
|
||||
nameStyle := ya.NameStyle.InheritFrom(defaults.InheritFrom(Style{TextRotationDegrees: 90}))
|
||||
if ya.NameStyle.Show && len(ya.Name) > 0 {
|
||||
nameStyle.GetTextOptions().WriteToRenderer(r)
|
||||
|
||||
r.SetTextRotation(Math.DegreesToRadians(90))
|
||||
|
||||
tb := r.MeasureText(ya.Name)
|
||||
tb := Draw.MeasureText(r, ya.Name, nameStyle)
|
||||
|
||||
var tx int
|
||||
if ya.AxisType == YAxisPrimary {
|
||||
|
|
@ -183,10 +195,9 @@ func (ya YAxis) Render(r Renderer, canvasBox Box, ra Range, defaults Style, tick
|
|||
tx = canvasBox.Left - (DefaultYAxisMargin + int(sw) + maxTextWidth + DefaultYAxisMargin)
|
||||
}
|
||||
|
||||
ty := canvasBox.Bottom - (canvasBox.Height()>>1 + tb.Width()>>1)
|
||||
ty := canvasBox.Top + (canvasBox.Height()>>1 + tb.Width()>>1)
|
||||
|
||||
r.Text(ya.Name, tx, ty)
|
||||
r.ClearTextRotation()
|
||||
Draw.Text(r, ya.Name, tx, ty, nameStyle)
|
||||
}
|
||||
|
||||
if ya.Zero.Style.Show {
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user