// returns a path relative to the UI handler.
//
// Locking: requires that DescribedRequest is done loading or that
// Request.mu is held (as it is from metaMap)
func (b *DescribedBlob) thumbnail(thumbSize int) (path string, width, height int, ok bool) {
if thumbSize <= 0 || !b.isPermanode() {
return
}
if b.Stub {
return "node.png", thumbSize, thumbSize, true
}
pnAttr := b.Permanode.Attr
if members := pnAttr["camliMember"]; len(members) > 0 {
return "folder.png", thumbSize, thumbSize, true
}
if content, ok := b.ContentRef(); ok {
peer := b.peerBlob(content)
if peer.File != nil {
if peer.File.IsImage() {
image := fmt.Sprintf("thumbnail/%s/%s?mh=%d", peer.BlobRef,
url.QueryEscape(peer.File.FileName), thumbSize)
if peer.Image != nil {
mw, mh := images.ScaledDimensions(
peer.Image.Width, peer.Image.Height,
MaxImageSize, thumbSize)
return image, mw, mh, true
}
return image, thumbSize, thumbSize, true
}
// TODO: different thumbnails based on peer.File.MIMEType.
const fileIconAspectRatio = 260.0 / 300.0
var width = int(math.Floor(float64(thumbSize)*fileIconAspectRatio + 0.5))
return "file.png", width, thumbSize, true
}
if peer.Dir != nil {
return "folder.png", thumbSize, thumbSize, true
}
}
return "node.png", thumbSize, thumbSize, true
}
// returns a path relative to the UI handler.
//
// Locking: requires that DescribedRequest is done loading or that
// Request.mu is held (as it is from metaMap)
func (b *DescribedBlob) thumbnail(thumbSize int) (path string, width, height int, ok bool) {
if thumbSize <= 0 || !b.isPermanode() {
return
}
if b.Stub {
return "node.png", thumbSize, thumbSize, true
}
if b.Permanode.IsContainer() {
return "folder.png", thumbSize, thumbSize, true
}
if content, ok := b.ContentRef(); ok {
peer := b.peerBlob(content)
if peer.File != nil {
ii := peer.Image
if peer.File.IsImage() && ii != nil && ii.Height > 0 && ii.Width > 0 {
image := fmt.Sprintf("thumbnail/%s/%s?mh=%d&tv=%s", peer.BlobRef,
url.QueryEscape(peer.File.FileName), thumbSize, images.ThumbnailVersion())
mw, mh := images.ScaledDimensions(
int(ii.Width), int(ii.Height),
MaxImageSize, thumbSize)
return image, mw, mh, true
}
// TODO: different thumbnails based on peer.File.MIMEType.
const fileIconAspectRatio = 260.0 / 300.0
var width = int(math.Floor(float64(thumbSize)*fileIconAspectRatio + 0.5))
return "file.png", width, thumbSize, true
}
if peer.Dir != nil {
return "folder.png", thumbSize, thumbSize, true
}
}
return "node.png", thumbSize, thumbSize, true
}