/
paint.go
138 lines (111 loc) · 2.88 KB
/
paint.go
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// Copyright (c) 2022 Timo Savola. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package paint
import (
"image"
"image/color"
flatbuffers "github.com/google/flatbuffers/go"
"github.com/tsavola/giobuffers/flat"
internal "github.com/tsavola/giobuffers/internal/resource"
"github.com/tsavola/giobuffers/op"
"github.com/tsavola/giobuffers/resource"
)
type ColorOp struct {
Color color.NRGBA
}
func (x ColorOp) Create(b *flatbuffers.Builder) op.Op {
flat.PaintColorOpStart(b)
flat.PaintColorOpAddColor(b, flat.CreateColorNRGBA(b, x.Color.R, x.Color.G, x.Color.B, x.Color.A))
offset := flat.PaintColorOpEnd(b)
return op.Op{
Type: flat.OpPaintColor,
Offset: offset,
}
}
func (x ColorOp) Add(b *flatbuffers.Builder, o *op.Ops) {
x.Create(b).Add(b, o)
}
type Image struct {
resource.Resource
typ flat.Image
decode []byte
nrgba *image.NRGBA
}
func NewImageDecode(c *resource.Context, id string, src []byte) *Image {
return &Image{
Resource: internal.MakeResource(c, id),
typ: flat.ImageImageDecode,
decode: src,
}
}
func NewImageNRGBA(c *resource.Context, id string, src *image.NRGBA) *Image {
return &Image{
Resource: internal.MakeResource(c, id),
typ: flat.ImageImageNRGBA,
nrgba: src,
}
}
func (x *Image) create(b *flatbuffers.Builder) flatbuffers.UOffsetT {
switch x.typ {
case flat.ImageImageDecode:
data := b.CreateByteVector(x.decode)
flat.ImageDecodeStart(b)
flat.ImageDecodeAddData(b, data)
return flat.ImageDecodeEnd(b)
case flat.ImageImageNRGBA:
pix := b.CreateByteVector(x.nrgba.Pix)
flat.ImageNRGBAStart(b)
flat.ImageNRGBAAddPix(b, pix)
if n := x.nrgba.Stride; n != 0 {
flat.ImageNRGBAAddStride(b, int32(n))
}
flat.ImageNRGBAAddRect(b, flat.CreateImageRectangle(b,
int32(x.nrgba.Rect.Min.X), int32(x.nrgba.Rect.Min.Y),
int32(x.nrgba.Rect.Max.X), int32(x.nrgba.Rect.Max.Y),
))
return flat.ImageNRGBAEnd(b)
}
panic(x.typ)
}
type ImageOp struct {
src *Image
}
func NewImageOp(src *Image) ImageOp {
return ImageOp{src}
}
func (x ImageOp) Create(b *flatbuffers.Builder) op.Op {
idOff := b.CreateSharedString(x.src.ID)
var srcOff flatbuffers.UOffsetT
if x.src.NeedSync() {
srcOff = x.src.create(b)
}
flat.PaintImageOpStart(b)
flat.PaintImageOpAddSrcId(b, idOff)
if srcOff != 0 {
flat.PaintImageOpAddSrcType(b, x.src.typ)
flat.PaintImageOpAddSrc(b, srcOff)
}
offset := flat.PaintImageOpEnd(b)
x.src.Synced()
return op.Op{
Type: flat.OpPaintImage,
Offset: offset,
}
}
func (x ImageOp) Add(b *flatbuffers.Builder, o *op.Ops) {
x.Create(b).Add(b, o)
}
type PaintOp struct {
}
func (x PaintOp) Create(b *flatbuffers.Builder) op.Op {
flat.PaintOpStart(b)
offset := flat.PaintOpEnd(b)
return op.Op{
Type: flat.OpPaint,
Offset: offset,
}
}
func (x PaintOp) Add(b *flatbuffers.Builder, o *op.Ops) {
x.Create(b).Add(b, o)
}