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fileitem.go
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fileitem.go
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package dialog
import (
"image/color"
"path/filepath"
"fyne.io/fyne"
"fyne.io/fyne/canvas"
"fyne.io/fyne/theme"
"fyne.io/fyne/widget"
)
const (
fileIconSize = 64
fileTextSize = 24
fileIconCellWidth = fileIconSize * 1.25
)
type fileDialogItem struct {
widget.BaseWidget
picker *fileDialog
isCurrent bool
name string
location fyne.URI
dir bool
}
func (i *fileDialogItem) Tapped(_ *fyne.PointEvent) {
i.picker.setSelected(i)
i.Refresh()
}
func (i *fileDialogItem) TappedSecondary(_ *fyne.PointEvent) {
}
func (i *fileDialogItem) CreateRenderer() fyne.WidgetRenderer {
text := widget.NewLabelWithStyle(i.name, fyne.TextAlignCenter, fyne.TextStyle{})
text.Wrapping = fyne.TextTruncate
var icon fyne.CanvasObject
if i.dir {
icon = canvas.NewImageFromResource(theme.FolderIcon())
} else {
icon = NewFileIcon(i.location)
}
return &fileItemRenderer{item: i,
icon: icon, text: text, objects: []fyne.CanvasObject{icon, text}}
}
func fileName(path fyne.URI) (name string) {
pathstr := path.String()[len(path.Scheme())+3:]
name = filepath.Base(pathstr)
ext := filepath.Ext(name[1:])
name = name[:len(name)-len(ext)]
return
}
func (i *fileDialogItem) isDirectory() bool {
return i.dir
}
func (f *fileDialog) newFileItem(location fyne.URI, dir bool) *fileDialogItem {
var name string
if dir {
name = location.Name()
} else {
name = fileName(location)
}
ret := &fileDialogItem{
picker: f,
name: name,
location: location,
dir: dir,
}
ret.ExtendBaseWidget(ret)
return ret
}
type fileItemRenderer struct {
item *fileDialogItem
icon fyne.CanvasObject
text *widget.Label
objects []fyne.CanvasObject
}
func (s fileItemRenderer) Layout(size fyne.Size) {
iconAlign := (size.Width - fileIconSize) / 2
s.icon.Resize(fyne.NewSize(fileIconSize, fileIconSize))
s.icon.Move(fyne.NewPos(iconAlign, 0))
s.text.Resize(fyne.NewSize(size.Width, fileTextSize))
s.text.Move(fyne.NewPos(0, fileIconSize+theme.Padding()))
}
func (s fileItemRenderer) MinSize() fyne.Size {
return fyne.NewSize(fileIconSize, fileIconSize+fileTextSize+theme.Padding())
}
func (s fileItemRenderer) Refresh() {
if s.item.isCurrent {
if i, ok := s.icon.(*canvas.Image); ok {
if _, ok := i.Resource.(*theme.InvertedThemedResource); !ok {
i.Resource = theme.NewInvertedThemedResource(i.Resource)
}
} else if i, ok := s.icon.(*fileIcon); ok {
i.setCurrent(true)
}
} else {
if i, ok := s.icon.(*canvas.Image); ok {
if res, ok := i.Resource.(*theme.InvertedThemedResource); ok {
i.Resource = res.Original()
}
} else if i, ok := s.icon.(*fileIcon); ok {
i.setCurrent(false)
}
}
canvas.Refresh(s.item)
}
func (s fileItemRenderer) BackgroundColor() color.Color {
if s.item.isCurrent {
return theme.PrimaryColor()
}
return theme.BackgroundColor()
}
func (s fileItemRenderer) Objects() []fyne.CanvasObject {
return s.objects
}
func (s fileItemRenderer) Destroy() {
}