add Painter Arg
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parent
fda5c8e713
commit
f7dc650faa
4 changed files with 24 additions and 6 deletions
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@ -39,8 +39,6 @@ func NewGraphicContext(img draw.Image) *ImageGraphicContext {
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switch selectImage := img.(type) {
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switch selectImage := img.(type) {
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case *image.RGBA:
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case *image.RGBA:
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painter = raster.NewRGBAPainter(selectImage)
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painter = raster.NewRGBAPainter(selectImage)
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//case *image.NRGBA:
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// painter = NewNRGBAPainter(selectImage)
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default:
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default:
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panic("Image type not supported")
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panic("Image type not supported")
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}
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}
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@ -62,6 +60,26 @@ func NewGraphicContext(img draw.Image) *ImageGraphicContext {
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return gc
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return gc
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}
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}
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// Create a new Graphic context from an image and a Painter (see Freetype-go)
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func NewGraphicContextWithPainter(img draw.Image, painter Painter) *ImageGraphicContext {
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width, height := img.Bounds().Dx(), img.Bounds().Dy()
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dpi := 92
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ftContext := freetype.NewContext()
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ftContext.SetDPI(dpi)
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ftContext.SetClip(img.Bounds())
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ftContext.SetDst(img)
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gc := &ImageGraphicContext{
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NewStackGraphicContext(),
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img,
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painter,
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raster.NewRasterizer(width, height),
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raster.NewRasterizer(width, height),
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ftContext,
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dpi,
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}
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return gc
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}
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func (gc *ImageGraphicContext) SetDPI(dpi int) {
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func (gc *ImageGraphicContext) SetDPI(dpi int) {
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gc.DPI = dpi
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gc.DPI = dpi
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gc.freetype.SetDPI(dpi)
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gc.freetype.SetDPI(dpi)
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