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m_list.go
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m_list.go
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package main
import (
"fmt"
"image"
"log"
"os"
"strings"
"time"
"fyne.io/fyne/v2"
"fyne.io/fyne/v2/canvas"
"fyne.io/fyne/v2/container"
"fyne.io/fyne/v2/dialog"
"fyne.io/fyne/v2/driver/desktop"
"fyne.io/fyne/v2/storage"
"fyne.io/fyne/v2/theme"
"fyne.io/fyne/v2/widget"
"github.com/disintegration/imaging"
// "github.com/DmitriyVTitov/size"
)
const (
BackupDirName = "backup"
)
var ScreenWidth, ScreenHeight float32
// File date to use
const (
UseExifDate = iota
UseFileDate
UseEnteredDate
)
// Photo
type Photo struct {
id int
fileURI fyne.URI
width int
height int
byteSize int64
Drop bool `json:"drop"`
Dates [3]string `json:"dates"`
DateUsed int `json:"date_used"`
CropRectangle image.Rectangle `json:"crop_rectangle"`
Adjust []float64 `json:"adjust"`
}
// get canvas image from file
func GetListImageAt(p *Photo) *canvas.Image {
// frame.StatusText.Set(fmt.Sprintf("Loading...%s - %.2f MB", p.fileURI.Name(), float64(p.byteSize)/1024./1024.))
m, err := imaging.Open(p.fileURI.Path(), imaging.AutoOrientation(true))
if err != nil {
log.Fatal(err)
}
// bytesBefore := float64(size.Of(m)) / 1024. / 1024.
filter := imaging.Box
nf := normFactor(m)
if nf > 0 {
m = imaging.Resize(m, int(ScreenWidth*nf), 0, filter)
}
img := canvas.NewImageFromImage(m)
img.FillMode = canvas.ImageFillContain
img.ScaleMode = canvas.ImageScaleFastest
// bytesAfter := float64(size.Of(m)) / 1024. / 1024.
// log.Printf("%s scaleDx %f scaleDy %f (%.2f MB)->(%.2f MB)", path.Base(list[pos].fileURI.Name()), scaleDx, scaleDy, bytesBefore, bytesAfter)
return img
}
const downscaleFactor float32 = 0.75
// screen normalization factor
func normFactor(m image.Image) float32 {
rowNum := 1
if a.state.FrameSize > 3 {
rowNum = 2
}
scaleDx := ScreenWidth / float32(m.Bounds().Dx()) / float32(rowNum)
scaleDy := ScreenHeight / float32(m.Bounds().Dy()) / float32(rowNum)
if scaleDx <= scaleDy {
if scaleDx < 1 {
return scaleDx
}
} else {
if scaleDy < 1 {
return scaleDy
}
}
return -1
}
// create new PhotoList object for the folder
func (a *App) newPhotoList() {
start := time.Now()
photos := []*Photo(nil)
files, _ := rootURI.List()
for i, f := range files {
ext := strings.ToLower(f.Extension())
if ext == ".jpg" || ext == ".jpeg" {
p := &Photo{
id: i,
fileURI: f,
Drop: false,
DateUsed: UseExifDate,
Dates: [3]string{},
}
photos = append(photos, p)
}
}
if len(photos) > 0 {
drv := a.Driver()
dd, ok := drv.(desktop.Driver)
if !ok {
log.Fatal("App can run only on desktops!!!")
}
w := dd.CreateSplashWindow()
defer w.Close()
var logo *canvas.Image
if a.state.Theme == "dark" {
logo = canvas.NewImageFromResource(appIconDark)
} else {
logo = canvas.NewImageFromResource(appIconLight)
}
logo.SetMinSize(fyne.NewSquareSize(100))
text := canvas.NewText("Reading folder "+rootURI.Path(), theme.PrimaryColor())
text.TextSize = theme.TextSize() * 1.3
text.Alignment = fyne.TextAlignCenter
progress := widget.NewProgressBar()
progress.TextFormatter = func() string {
return fmt.Sprintf("processing %d of %d files", int(progress.Value), int(progress.Max))
}
progress.Min = 0
progress.Max = float64(len(photos))
content := container.NewBorder(container.NewCenter(logo), progress, nil, nil, text)
w.SetContent(content)
w.SetPadded(true)
w.Resize(fyne.NewSize(600, 100))
w.Show()
for i, p := range photos {
p.Adjust = make([]float64, len(adjustFiltersDict))
for k := range p.Adjust {
p.Adjust[k] = adjustFiltersDict[k].zero
}
p.GetPhotoProperties(p.fileURI)
if len(p.Dates[UseExifDate]) != len(ListDateFormat) {
p.DateUsed = UseFileDate
}
if s, ok := a.state.List[p.fileURI.Name()]; ok {
p.Drop = s.Drop
p.DateUsed = s.DateUsed
p.Dates = s.Dates
p.CropRectangle = s.CropRectangle
p.Adjust = s.Adjust
}
progress.SetValue(float64(i + 1))
}
}
list = photos
if a.state.FramePos >= len(list) {
a.state.FramePos = len(list) - 1
}
if len(list) < a.state.FrameSize {
a.state.FrameSize = len(list)
}
sortList(a.state.ListOrderColumn, a.state.ListOrder)
time.Sleep(2*time.Second - time.Since(start))
}
func (a *App) SavePhotoList(rename bool) {
modified := false
for _, p := range list {
if p.Drop || p.DateUsed != UseExifDate || !p.CropRectangle.Empty() {
modified = true
break
}
}
if !modified && !rename {
return
}
backupURI, err := makeChildFolder(BackupDirName)
if err != nil {
dialog.ShowError(err, a.topWindow)
return
}
var src, dst fyne.URI
for _, p := range list {
src = p.fileURI
dst, _ = storage.Child(backupURI, p.fileURI.Name())
os.Rename(src.Path(), dst.Path())
p.fileURI = dst
}
for _, p := range list {
src = p.fileURI
switch {
case p.isDroped():
case p.isDated() || p.isCropped() || p.isAdjusted():
if rename && !isDateSimilarToFileName(p) {
dst, _ = storage.Child(rootURI, listDateToFileNameDate(p.Dates[p.DateUsed])+p.fileURI.Extension())
} else {
dst, _ = storage.Child(rootURI, p.fileURI.Name())
}
err = p.SaveUpdatedImage(src, dst)
if err != nil {
dialog.ShowError(err, a.topWindow)
}
case rename:
if !isDateSimilarToFileName(p) {
dst, _ = storage.Child(rootURI, listDateToFileNameDate(p.Dates[UseExifDate])+p.fileURI.Extension())
storage.Copy(src, dst)
break
}
fallthrough
default:
dst, _ = storage.Child(rootURI, p.fileURI.Name())
os.Rename(src.Path(), dst.Path())
}
}
}
func makeChildFolder(name string) (fyne.URI, error) {
URI, _ := storage.Child(rootURI, name)
exists, err := storage.Exists(URI)
if err != nil {
return nil, err
}
if !exists {
if err := storage.CreateListable(URI); err != nil {
return nil, err
}
}
return URI, nil
}
func isDateSimilarToFileName(p *Photo) bool {
similar := func(a, b time.Time) bool {
diff := a.Sub(b)
if diff < 0 {
diff = -diff
}
return diff < time.Second*2
}
nameDate, err := time.Parse(FileNameDateFormat, strings.TrimSuffix(p.fileURI.Name(), p.fileURI.Extension()))
if err != nil {
return false
}
switch p.DateUsed {
case UseExifDate:
exifDate, _ := time.Parse(ListDateFormat, p.Dates[UseExifDate])
return similar(nameDate, exifDate)
case UseFileDate:
fileDate, _ := time.Parse(ListDateFormat, p.Dates[UseFileDate])
return similar(nameDate, fileDate)
case UseEnteredDate:
enteredDate, _ := time.Parse(ListDateFormat, p.Dates[UseEnteredDate])
return similar(nameDate, enteredDate)
}
return true
}