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shareable: Rename variables

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This commit is contained in:
Hajime Hoshi 2018-04-09 02:18:46 +09:00
parent c976ccc66c
commit 070c8ec737
1 changed files with 42 additions and 42 deletions
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84
internal/shareable/shareable.go
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@ -87,44 +87,44 @@ type Image struct {
node *packing.Node
}
func (s *Image) ensureNotShared() {
if s.node == nil {
func (i *Image) ensureNotShared() {
if i.node == nil {
return
}
x, y, w, h := s.region()
x, y, w, h := i.region()
newImg := restorable.NewImage(w, h, false)
newImg.DrawImage(s.backend.restorable, x, y, x+w, y+h, nil, nil, opengl.CompositeModeCopy, graphics.FilterNearest)
newImg.DrawImage(i.backend.restorable, x, y, x+w, y+h, nil, nil, opengl.CompositeModeCopy, graphics.FilterNearest)
s.dispose()
s.backend = &backend{
i.dispose()
i.backend = &backend{
restorable: newImg,
}
}
func (s *Image) region() (x, y, width, height int) {
if s.node == nil {
w, h := s.backend.restorable.Size()
func (i *Image) region() (x, y, width, height int) {
if i.node == nil {
w, h := i.backend.restorable.Size()
return 0, 0, w, h
}
return s.node.Region()
return i.node.Region()
}
func (s *Image) Size() (width, height int) {
func (i *Image) Size() (width, height int) {
backendsM.Lock()
defer backendsM.Unlock()
_, _, w, h := s.region()
_, _, w, h := i.region()
return w, h
}
func (s *Image) DrawImage(img *Image, sx0, sy0, sx1, sy1 int, geom *affine.GeoM, colorm *affine.ColorM, mode opengl.CompositeMode, filter graphics.Filter) {
func (i *Image) DrawImage(img *Image, sx0, sy0, sx1, sy1 int, geom *affine.GeoM, colorm *affine.ColorM, mode opengl.CompositeMode, filter graphics.Filter) {
backendsM.Lock()
defer backendsM.Unlock()
s.ensureNotShared()
i.ensureNotShared()
// Compare i and img after ensuring i is not shared, or
// i and img might share the same texture even though i != img.
if s.backend.restorable == img.backend.restorable {
if i.backend.restorable == img.backend.restorable {
panic("shareable: Image.DrawImage: img must be different from the receiver")
}
@ -133,71 +133,71 @@ func (s *Image) DrawImage(img *Image, sx0, sy0, sx1, sy1 int, geom *affine.GeoM,
sy0 += dy
sx1 += dx
sy1 += dy
s.backend.restorable.DrawImage(img.backend.restorable, sx0, sy0, sx1, sy1, geom, colorm, mode, filter)
i.backend.restorable.DrawImage(img.backend.restorable, sx0, sy0, sx1, sy1, geom, colorm, mode, filter)
}
func (s *Image) ReplacePixels(p []byte) {
func (i *Image) ReplacePixels(p []byte) {
backendsM.Lock()
defer backendsM.Unlock()
x, y, w, h := s.region()
x, y, w, h := i.region()
if l := 4 * w * h; len(p) != l {
panic(fmt.Sprintf("shareable: len(p) was %d but must be %d", len(p), l))
}
s.backend.restorable.ReplacePixels(p, x, y, w, h)
i.backend.restorable.ReplacePixels(p, x, y, w, h)
}
func (s *Image) At(x, y int) (color.Color, error) {
func (i *Image) At(x, y int) (color.Color, error) {
backendsM.Lock()
defer backendsM.Unlock()
ox, oy, w, h := s.region()
ox, oy, w, h := i.region()
if x < 0 || y < 0 || x >= w || y >= h {
return color.RGBA{}, nil
}
clr, err := s.backend.restorable.At(x+ox, y+oy)
clr, err := i.backend.restorable.At(x+ox, y+oy)
return clr, err
}
func (s *Image) isDisposed() bool {
return s.backend == nil
func (i *Image) isDisposed() bool {
return i.backend == nil
}
func (s *Image) Dispose() {
func (i *Image) Dispose() {
backendsM.Lock()
defer backendsM.Unlock()
s.dispose()
i.dispose()
}
func (s *Image) dispose() {
if s.isDisposed() {
func (i *Image) dispose() {
if i.isDisposed() {
return
}
defer func() {
s.backend = nil
s.node = nil
runtime.SetFinalizer(s, nil)
i.backend = nil
i.node = nil
runtime.SetFinalizer(i, nil)
}()
if s.node == nil {
s.backend.restorable.Dispose()
if i.node == nil {
i.backend.restorable.Dispose()
return
}
s.backend.page.Free(s.node)
if !s.backend.page.IsEmpty() {
i.backend.page.Free(i.node)
if !i.backend.page.IsEmpty() {
// As this part can be reused, this should be cleared explicitly.
s.backend.restorable.Clear(s.region())
i.backend.restorable.Clear(i.region())
return
}
s.backend.restorable.Dispose()
i.backend.restorable.Dispose()
index := -1
for i, sh := range theBackends {
if sh == s.backend {
index = i
for idx, sh := range theBackends {
if sh == i.backend {
index = idx
break
}
}
@ -207,10 +207,10 @@ func (s *Image) dispose() {
theBackends = append(theBackends[:index], theBackends[index+1:]...)
}
func (s *Image) IsInvalidated() (bool, error) {
func (i *Image) IsInvalidated() (bool, error) {
backendsM.Lock()
defer backendsM.Unlock()
v, err := s.backend.restorable.IsInvalidated()
v, err := i.backend.restorable.IsInvalidated()
return v, err
}