zeni/go-chart
1
0
Fork 0
Code Issues Pull requests Projects Releases 2 Packages Wiki Activity Actions

???

Browse source
This commit is contained in:
Will Charczuk 2016-07-11 18:48:51 -07:00
parent 01983f4e86
commit 9a5138b21d
17 changed files with 477 additions and 308 deletions
Download patch file Download diff file Expand all files Collapse all files

17
vector_renderer.go
View file

@ -61,6 +61,11 @@ func (vr *vectorRenderer) SetStrokeWidth(width float64) {
vr.s.StrokeWidth = width
}
// StrokeDashArray sets the stroke dash array.
func (vr *vectorRenderer) SetStrokeDashArray(dashArray []float64) {
vr.s.StrokeDashArray = dashArray
}
// MoveTo implements the interface method.
func (vr *vectorRenderer) MoveTo(x, y int) {
vr.p = append(vr.p, fmt.Sprintf("M %d %d", x, y))
@ -71,6 +76,7 @@ func (vr *vectorRenderer) LineTo(x, y int) {
vr.p = append(vr.p, fmt.Sprintf("L %d %d", x, y))
}
// Close closes a shape.
func (vr *vectorRenderer) Close() {
vr.p = append(vr.p, fmt.Sprintf("Z"))
}
@ -90,6 +96,7 @@ func (vr *vectorRenderer) FillStroke() {
vr.drawPath(vr.s.SVGFillAndStroke())
}
// drawPath draws a path.
func (vr *vectorRenderer) drawPath(s Style) {
vr.c.Path(strings.Join(vr.p, "\n"), s.SVG(vr.dpi))
vr.p = []string{} // clear the path
@ -115,6 +122,7 @@ func (vr *vectorRenderer) SetFontSize(size float64) {
vr.s.FontSize = size
}
// svgFontFace returns the font face component of an svg element style.
func (vr *vectorRenderer) svgFontFace() string {
family := "sans-serif"
if vr.f != nil {
@ -133,7 +141,7 @@ func (vr *vectorRenderer) Text(body string, x, y int) {
}
// MeasureText uses the truetype font drawer to measure the width of text.
func (vr *vectorRenderer) MeasureText(body string) (width, height int) {
func (vr *vectorRenderer) MeasureText(body string) (box Box) {
if vr.f != nil {
vr.fc = &font.Drawer{
Face: truetype.NewFace(vr.f, &truetype.Options{
@ -143,12 +151,15 @@ func (vr *vectorRenderer) MeasureText(body string) (width, height int) {
}
w := vr.fc.MeasureString(body).Ceil()
width = w
height = int(drawing.PointsToPixels(vr.dpi, vr.s.FontSize))
box.Right = w
box.Bottom = int(drawing.PointsToPixels(vr.dpi, vr.s.FontSize))
box.Width = w
box.Height = int(drawing.PointsToPixels(vr.dpi, vr.s.FontSize))
}
return
}
// Save saves the renderer's contents to a writer.
func (vr *vectorRenderer) Save(w io.Writer) error {
vr.c.End()
_, err := w.Write(vr.b.Bytes())