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graphics: Fill the screenshot in black when the screen is not transparent

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Fixes #997
This commit is contained in:
Hajime Hoshi 2020-02-06 03:03:38 +09:00
parent 67b166f732
commit 46601bb516
7 changed files with 21 additions and 11 deletions
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3
imagedumper_desktop.go
View File

@ -52,7 +52,8 @@ func takeScreenshot(screen *Image) error {
return err
}
if err := screen.buffered.Dump(newname); err != nil {
blackbg := !IsScreenTransparent()
if err := screen.buffered.Dump(newname, blackbg); err != nil {
return err
}

4
internal/buffered/image.go
View File

@ -170,13 +170,13 @@ func (img *Image) set(x, y int, r, g, b, a byte) error {
return nil
}
func (i *Image) Dump(name string) error {
func (i *Image) Dump(name string, blackbg bool) error {
delayedCommandsM.Lock()
defer delayedCommandsM.Unlock()
if needsToDelayCommands {
panic("buffered: the command queue is not available yet at Dump")
}
return i.img.Dump(name)
return i.img.Dump(name, blackbg)
}
func (i *Image) Fill(clr color.RGBA) {

11
internal/graphicscommand/image.go
View File

@ -209,8 +209,10 @@ func (i *Image) IsInvalidated() bool {
// Dump dumps the image to the specified path.
// In the path, '*' is replaced with the image's ID.
//
// If blackbg is true, any alpha values in the dumped image will be 255.
//
// This is for testing usage.
func (i *Image) Dump(path string) error {
func (i *Image) Dump(path string, blackbg bool) error {
// Screen image cannot be dumped.
if i.screen {
return nil
@ -227,6 +229,13 @@ func (i *Image) Dump(path string) error {
if err != nil {
return err
}
if blackbg {
for i := 0; i < len(pix)/4; i++ {
pix[4*i+3] = 0xff
}
}
if err := png.Encode(f, &image.RGBA{
Pix: pix,
Stride: 4 * i.width,

4
internal/mipmap/mipmap.go
View File

@ -78,8 +78,8 @@ func NewScreenFramebufferMipmap(width, height int) *Mipmap {
}
}
func (m *Mipmap) Dump(name string) error {
return m.orig.Dump(name)
func (m *Mipmap) Dump(name string, blackbg bool) error {
return m.orig.Dump(name, blackbg)
}
func (m *Mipmap) Fill(clr color.RGBA) {

4
internal/restorable/image.go
View File

@ -577,6 +577,6 @@ func (i *Image) isInvalidated() (bool, error) {
return i.image.IsInvalidated(), nil
}
func (i *Image) Dump(path string) error {
return i.image.Dump(path)
func (i *Image) Dump(path string, blackbg bool) error {
return i.image.Dump(path, blackbg)
}

2
internal/restorable/images.go
View File

@ -101,7 +101,7 @@ func RestoreIfNeeded() error {
// This is for testing usage.
func DumpImages(dir string) error {
for img := range theImages.images {
if err := img.Dump(filepath.Join(dir, "*.png")); err != nil {
if err := img.Dump(filepath.Join(dir, "*.png"), false); err != nil {
return err
}
}

4
internal/shareable/image.go
View File

@ -529,11 +529,11 @@ func (i *Image) allocate(shareable bool) {
i.node = n
}
func (i *Image) Dump(path string) error {
func (i *Image) Dump(path string, blackbg bool) error {
backendsM.Lock()
defer backendsM.Unlock()
return i.backend.restorable.Dump(path)
return i.backend.restorable.Dump(path, blackbg)
}
func NewScreenFramebufferImage(width, height int) *Image {