Leak_Technologies/VideoTools
Leak_Technologies/VideoTools
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Lazy-load thumbnail previews for batch drops

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This commit is contained in:
Stu Leak 2026-01-04 00:16:27 -05:00
parent 223ff7203b
commit 0bf4ee54d5
2 changed files with 43 additions and 19 deletions
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28
main.go
View File

@ -11132,29 +11132,21 @@ func (s *appState) handleDrop(pos fyne.Position, items []fyne.URI) {
return
}
// Multi-drop: load list and add jobs for each file
// Multi-drop: add lightweight list entries and queue jobs
go func() {
var sources []*videoSource
for _, path := range videoPaths {
src, err := probeVideo(path)
if err != nil {
logging.Debug(logging.CatModule, "failed to load video for thumb: %v", err)
continue
}
sources = append(sources, src)
}
if len(sources) == 0 {
fyne.CurrentApp().Driver().DoFromGoroutine(func() {
dialog.ShowError(fmt.Errorf("failed to load video files for thumbnails"), s.window)
}, false)
return
}
fyne.CurrentApp().Driver().DoFromGoroutine(func() {
var sources []*videoSource
for _, path := range videoPaths {
sources = append(sources, &videoSource{
Path: path,
DisplayName: filepath.Base(path),
})
}
s.thumbFiles = sources
s.thumbFile = sources[0]
s.showThumbView()
logging.Debug(logging.CatModule, "loaded %d videos into thumb module", len(sources))
s.loadThumbSourceAtIndex(0)
logging.Debug(logging.CatModule, "loaded %d videos into thumb module (lazy probe)", len(sources))
}, false)
if s.jobQueue != nil {

34
thumb_module.go
View File

@ -42,6 +42,34 @@ func (s *appState) addThumbSource(src *videoSource) {
s.thumbFiles = append(s.thumbFiles, src)
}
func (s *appState) loadThumbSourceAtIndex(idx int) {
if idx < 0 || idx >= len(s.thumbFiles) {
return
}
current := s.thumbFiles[idx]
if current == nil || current.Path == "" {
return
}
if current.Width > 0 || current.Height > 0 || current.Duration > 0 {
return
}
path := current.Path
go func() {
probed, err := probeVideo(path)
if err != nil {
logging.Debug(logging.CatModule, "failed to probe thumbnail source: %v", err)
return
}
fyne.CurrentApp().Driver().DoFromGoroutine(func() {
s.thumbFiles[idx] = probed
if s.thumbFile != nil && s.thumbFile.Path == path {
s.thumbFile = probed
}
s.showThumbView()
}, false)
}()
}
func buildThumbView(state *appState) fyne.CanvasObject {
thumbColor := moduleColor("thumb")
@ -92,7 +120,10 @@ func buildThumbView(state *appState) fyne.CanvasObject {
fileLabel.TextStyle = fyne.TextStyle{Bold: true}
var videoContainer fyne.CanvasObject
if state.thumbFile != nil {
if state.thumbFile != nil && state.thumbFile.Width == 0 && state.thumbFile.Height == 0 {
fileLabel.SetText(fmt.Sprintf("File: %s", filepath.Base(state.thumbFile.Path)))
videoContainer = container.NewCenter(widget.NewLabel("Loading preview..."))
} else if state.thumbFile != nil {
fileLabel.SetText(fmt.Sprintf("File: %s", filepath.Base(state.thumbFile.Path)))
videoContainer = buildVideoPane(state, fyne.NewSize(480, 270), state.thumbFile, nil)
} else {
@ -407,6 +438,7 @@ func buildThumbView(state *appState) fyne.CanvasObject {
return
}
state.thumbFile = state.thumbFiles[id]
state.loadThumbSourceAtIndex(id)
state.showThumbView()
}
if state.thumbFile != nil {