zeni/go-chart
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changed initial retrieval to callback due to original's Save() pattern

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This commit is contained in:
Erik Bunn 2022-06-27 14:16:44 +02:00
parent d8cf23c038
commit 1c31e40d79
1 changed files with 6 additions and 5 deletions
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11
raster_renderer.go
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@ -23,7 +23,7 @@ func PNG(width, height int) (Renderer, error) {
return nil, err
}
func InMemory(width, height int) (Renderer, error) {
func InMemory(width, height int, cb func(image.Image)) (Renderer, error) {
i := image.NewRGBA(image.Rect(0, 0, width, height))
gc, err := drawing.NewRasterGraphicContext(i)
if err == nil {
@ -32,6 +32,7 @@ func InMemory(width, height int) (Renderer, error) {
i: i,
gc: gc,
},
cb,
}, nil
}
return nil, err
@ -245,12 +246,12 @@ func (rr *rasterRenderer) Save(w io.Writer) error {
type memRenderer struct {
rasterRenderer
cb func(image.Image)
}
func (m *memRenderer) Save(w io.Writer) error {
if m.cb != nil {
m.cb(m.i)
}
return nil
}
func (m *memRenderer) AsImage() image.Image {
return m.i
}