file-elements #13
@ -219,7 +219,6 @@ func (element *DocumentContainer) NotifyFlexibleHeightChange (child elements.Fle
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element.core.DamageAll()
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}
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// SetTheme sets the element's theme.
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func (element *DocumentContainer) SetTheme (new theme.Theme) {
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if new == element.theme.Theme { return }
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@ -152,6 +152,9 @@ func (element *ScrollContainer) HandleScroll (
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x, y int,
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deltaX, deltaY float64,
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) {
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horizontal, vertical := element.child.ScrollAxes()
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if !horizontal { deltaX = 0 }
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if !vertical { deltaY = 0 }
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element.scrollChildBy(int(deltaX), int(deltaY))
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}
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375
elements/file/directory.go
Normal file
375
elements/file/directory.go
Normal file
@ -0,0 +1,375 @@
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package fileElements
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import "io/fs"
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import "image"
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import "path/filepath"
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import "git.tebibyte.media/sashakoshka/tomo/theme"
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import "git.tebibyte.media/sashakoshka/tomo/input"
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import "git.tebibyte.media/sashakoshka/tomo/artist"
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import "git.tebibyte.media/sashakoshka/tomo/canvas"
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import "git.tebibyte.media/sashakoshka/tomo/config"
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import "git.tebibyte.media/sashakoshka/tomo/textdraw"
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import "git.tebibyte.media/sashakoshka/tomo/elements"
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import "git.tebibyte.media/sashakoshka/tomo/elements/core"
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type fileLayoutEntry struct {
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*File
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fs.DirEntry
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Bounds image.Rectangle
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Drawer textdraw.Drawer
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TextPoint image.Point
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}
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type historyEntry struct {
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location string
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filesystem ReadDirStatFS
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}
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// Directory displays a list of files within a particular directory and
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// file system.
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type Directory struct {
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*core.Core
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*core.Propagator
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core core.CoreControl
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children []fileLayoutEntry
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scroll image.Point
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contentBounds image.Rectangle
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config config.Wrapped
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theme theme.Wrapped
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onScrollBoundsChange func ()
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history []historyEntry
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historyIndex int
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onChoose func (file string)
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}
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// NewDirectory creates a new directory view. If within is nil, it will use
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// the OS file system.
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func NewDirectory (
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location string,
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within ReadDirStatFS,
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) (
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element *Directory,
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err error,
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) {
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element = &Directory { }
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element.theme.Case = theme.C("files", "Directory")
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element.Core, element.core = core.NewCore(element, element.redoAll)
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element.Propagator = core.NewPropagator(element, element.core)
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err = element.SetLocation(location, within)
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return
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}
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// Location returns the directory's location and filesystem.
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func (element *Directory) Location () (string, ReadDirStatFS) {
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if len(element.history) < 1 { return "", nil }
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current := element.history[element.historyIndex]
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return current.location, current.filesystem
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}
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// SetLocation sets the directory's location and filesystem. If within is nil,
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// it will use the OS file system.
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func (element *Directory) SetLocation (
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location string,
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within ReadDirStatFS,
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) error {
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if within == nil {
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within = defaultFS { }
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}
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element.scroll = image.Point { }
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if element.history != nil {
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element.historyIndex ++
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}
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element.history = append (
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element.history[:element.historyIndex],
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historyEntry { location, within })
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return element.Update()
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}
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// Backward goes back a directory in history
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func (element *Directory) Backward () (bool, error) {
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if element.historyIndex > 1 {
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element.historyIndex --
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return true, element.Update()
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} else {
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return false, nil
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}
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}
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// Forward goes forward a directory in history
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func (element *Directory) Forward () (bool, error) {
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if element.historyIndex < len(element.history) - 1 {
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element.historyIndex ++
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return true, element.Update()
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} else {
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return false, nil
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}
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}
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// Update refreshes the directory's contents.
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func (element *Directory) Update () error {
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location, filesystem := element.Location()
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entries, err := filesystem.ReadDir(location)
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// disown all entries
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for _, file := range element.children {
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file.DrawTo(nil, image.Rectangle { }, nil)
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file.SetParent(nil)
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if file.Focused() {
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file.HandleUnfocus()
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}
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}
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element.children = make([]fileLayoutEntry, len(entries))
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for index, entry := range entries {
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filePath := filepath.Join(location, entry.Name())
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file, err := NewFile(filePath, filesystem)
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if err != nil { continue }
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file.SetParent(element)
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file.OnChoose (func () {
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if element.onChoose != nil {
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element.onChoose(filePath)
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}
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})
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element.children[index].File = file
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element.children[index].DirEntry = entry
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element.children[index].Drawer.SetFace (element.theme.FontFace(
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theme.FontStyleRegular,
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theme.FontSizeNormal))
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element.children[index].Drawer.SetText([]rune(entry.Name()))
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element.children[index].Drawer.SetAlign(textdraw.AlignCenter)
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}
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if element.core.HasImage() {
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element.redoAll()
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element.core.DamageAll()
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}
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return err
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}
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// OnChoose sets a function to be called when the user double-clicks a file or
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// sub-directory within the directory view.
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func (element *Directory) OnChoose (callback func (file string)) {
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element.onChoose = callback
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}
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// CountChildren returns the amount of children contained within this element.
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func (element *Directory) CountChildren () (count int) {
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return len(element.children)
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}
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// Child returns the child at the specified index. If the index is out of
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// bounds, this method will return nil.
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func (element *Directory) Child (index int) (child elements.Element) {
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if index < 0 || index > len(element.children) { return }
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return element.children[index].File
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}
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func (element *Directory) HandleMouseDown (x, y int, button input.Button) {
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if button == input.ButtonLeft {
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var file *File
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for _, entry := range element.children {
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if image.Pt(x, y).In(entry.Bounds) {
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file = entry.File
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}
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}
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if file != nil {
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file.SetSelected(!file.Selected())
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}
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}
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element.Propagator.HandleMouseDown(x, y, button)
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}
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func (element *Directory) redoAll () {
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if !element.core.HasImage() { return }
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// do a layout
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element.doLayout()
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maxScrollHeight := element.maxScrollHeight()
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if element.scroll.Y > maxScrollHeight {
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element.scroll.Y = maxScrollHeight
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element.doLayout()
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}
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// draw a background
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rocks := make([]image.Rectangle, len(element.children))
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for index, entry := range element.children {
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rocks[index] = entry.Bounds
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}
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pattern := element.theme.Pattern (
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theme.PatternPinboard,
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theme.State { })
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artist.DrawShatter(element.core, pattern, element.Bounds(), rocks...)
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element.partition()
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if parent, ok := element.core.Parent().(elements.ScrollableParent); ok {
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parent.NotifyScrollBoundsChange(element)
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}
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if element.onScrollBoundsChange != nil {
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element.onScrollBoundsChange()
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}
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// draw labels
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foreground := element.theme.Color(theme.ColorForeground, theme.State { })
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for _, entry := range element.children {
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entry.Drawer.Draw(element.core, foreground, entry.TextPoint)
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}
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}
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func (element *Directory) partition () {
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for _, entry := range element.children {
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entry.DrawTo(nil, entry.Bounds, nil)
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}
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// cut our canvas up and give peices to child elements
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for _, entry := range element.children {
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if entry.Bounds.Overlaps(element.Bounds()) {
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entry.DrawTo (
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canvas.Cut(element.core, entry.Bounds),
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entry.Bounds, func (region image.Rectangle) {
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element.core.DamageRegion(region)
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})
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}
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}
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}
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// NotifyMinimumSizeChange notifies the container that the minimum size of a
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// child element has changed.
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func (element *Directory) NotifyMinimumSizeChange (child elements.Element) {
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element.redoAll()
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element.core.DamageAll()
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}
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// SetTheme sets the element's theme.
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func (element *Directory) SetTheme (new theme.Theme) {
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if new == element.theme.Theme { return }
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element.theme.Theme = new
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element.Propagator.SetTheme(new)
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element.redoAll()
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}
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// SetConfig sets the element's configuration.
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func (element *Directory) SetConfig (new config.Config) {
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if new == element.config.Config { return }
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element.Propagator.SetConfig(new)
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element.redoAll()
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}
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// ScrollContentBounds returns the full content size of the element.
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func (element *Directory) ScrollContentBounds () image.Rectangle {
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return element.contentBounds
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}
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// ScrollViewportBounds returns the size and position of the element's
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// viewport relative to ScrollBounds.
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func (element *Directory) ScrollViewportBounds () image.Rectangle {
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padding := element.theme.Padding(theme.PatternPinboard)
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bounds := padding.Apply(element.Bounds())
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bounds = bounds.Sub(bounds.Min).Add(element.scroll)
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return bounds
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}
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// ScrollTo scrolls the viewport to the specified point relative to
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// ScrollBounds.
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func (element *Directory) ScrollTo (position image.Point) {
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if position.Y < 0 {
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position.Y = 0
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}
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maxScrollHeight := element.maxScrollHeight()
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if position.Y > maxScrollHeight {
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position.Y = maxScrollHeight
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}
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element.scroll = position
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if element.core.HasImage() {
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element.redoAll()
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element.core.DamageAll()
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}
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}
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// OnScrollBoundsChange sets a function to be called when the element's viewport
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// bounds, content bounds, or scroll axes change.
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func (element *Directory) OnScrollBoundsChange (callback func ()) {
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element.onScrollBoundsChange = callback
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}
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// ScrollAxes returns the supported axes for scrolling.
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func (element *Directory) ScrollAxes () (horizontal, vertical bool) {
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return false, true
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}
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func (element *Directory) maxScrollHeight () (height int) {
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padding := element.theme.Padding(theme.PatternSunken)
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viewportHeight := element.Bounds().Dy() - padding.Vertical()
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height = element.contentBounds.Dy() - viewportHeight
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if height < 0 { height = 0 }
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return
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}
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func (element *Directory) doLayout () {
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margin := element.theme.Margin(theme.PatternPinboard)
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padding := element.theme.Padding(theme.PatternPinboard)
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bounds := padding.Apply(element.Bounds())
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element.contentBounds = image.Rectangle { }
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beginningOfRow := true
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dot := bounds.Min.Sub(element.scroll)
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rowHeight := 0
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for index, entry := range element.children {
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width, height := entry.MinimumSize()
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if dot.X + width > bounds.Max.X {
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dot.X = bounds.Min.Sub(element.scroll).X
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dot.Y += rowHeight
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if index > 1 {
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dot.Y += margin.Y
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}
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beginningOfRow = true
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}
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if beginningOfRow {
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beginningOfRow = false
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} else {
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dot.X += margin.X
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}
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entry.Drawer.SetMaxWidth(width)
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bounds := image.Rect(dot.X, dot.Y, dot.X + width, dot.Y + height)
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entry.Bounds = bounds
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drawerHeight := entry.Drawer.ReccomendedHeightFor(width)
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entry.TextPoint =
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image.Pt(bounds.Min.X, bounds.Max.Y + margin.Y).
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Sub(entry.Drawer.LayoutBounds().Min)
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bounds.Max.Y += margin.Y + drawerHeight
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height += margin.Y + drawerHeight
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if rowHeight < height {
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rowHeight = height
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}
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element.contentBounds = element.contentBounds.Union(bounds)
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element.children[index] = entry
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dot.X += width
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}
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element.contentBounds =
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element.contentBounds.Sub(element.contentBounds.Min)
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}
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func (element *Directory) updateMinimumSize () {
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padding := element.theme.Padding(theme.PatternPinboard)
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minimumWidth := 0
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for _, entry := range element.children {
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width, _ := entry.MinimumSize()
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if width > minimumWidth {
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minimumWidth = width
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}
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}
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element.core.SetMinimumSize (
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minimumWidth + padding.Horizontal(),
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padding.Vertical())
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}
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216
elements/file/file.go
Normal file
216
elements/file/file.go
Normal file
@ -0,0 +1,216 @@
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package fileElements
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import "time"
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import "io/fs"
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import "image"
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import "git.tebibyte.media/sashakoshka/tomo/input"
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import "git.tebibyte.media/sashakoshka/tomo/theme"
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import "git.tebibyte.media/sashakoshka/tomo/artist"
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import "git.tebibyte.media/sashakoshka/tomo/config"
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import "git.tebibyte.media/sashakoshka/tomo/elements/core"
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// File displays an interactive visual representation of a file within any
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// file system.
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type File struct {
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*core.Core
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*core.FocusableCore
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core core.CoreControl
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focusableControl core.FocusableCoreControl
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config config.Wrapped
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theme theme.Wrapped
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lastClick time.Time
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pressed bool
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iconID theme.Icon
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filesystem fs.StatFS
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location string
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selected bool
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onChoose func ()
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}
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// NewFile creates a new file element. If within is nil, it will use the OS file
|
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// system
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func NewFile (
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location string,
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within fs.StatFS,
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) (
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element *File,
|
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err error,
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) {
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element = &File { }
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element.theme.Case = theme.C("files", "file")
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element.Core, element.core = core.NewCore(element, element.drawAll)
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element.FocusableCore,
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element.focusableControl = core.NewFocusableCore(element.core, element.drawAndPush)
|
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err = element.SetLocation(location, within)
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return
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}
|
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|
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// Location returns the file's location and filesystem.
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func (element *File) Location () (string, fs.StatFS) {
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return element.location, element.filesystem
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}
|
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|
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// SetLocation sets the file's location and filesystem. If within is nil, it
|
||||
// will use the OS file system.
|
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func (element *File) SetLocation (
|
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location string,
|
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within fs.StatFS,
|
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) error {
|
||||
if within == nil {
|
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within = defaultFS { }
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}
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element.location = location
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element.filesystem = within
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return element.Update()
|
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}
|
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|
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// Update refreshes the element to match the file it represents.
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func (element *File) Update () error {
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element.iconID = theme.IconError
|
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info, err := element.filesystem.Stat(element.location)
|
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if err != nil { return err }
|
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|
||||
// TODO: choose icon based on file mime type
|
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if info.IsDir() {
|
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element.iconID = theme.IconDirectory
|
||||
} else {
|
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element.iconID = theme.IconFile
|
||||
}
|
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|
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element.updateMinimumSize()
|
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element.drawAndPush()
|
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return err
|
||||
}
|
||||
|
||||
func (element *File) Selected () bool {
|
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return element.selected
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||||
}
|
||||
|
||||
func (element *File) SetSelected (selected bool) {
|
||||
if element.selected == selected { return }
|
||||
element.selected = selected
|
||||
element.drawAndPush()
|
||||
}
|
||||
|
||||
func (element *File) HandleKeyDown (key input.Key, modifiers input.Modifiers) {
|
||||
if !element.Enabled() { return }
|
||||
if key == input.KeyEnter {
|
||||
element.pressed = true
|
||||
element.drawAndPush()
|
||||
}
|
||||
}
|
||||
|
||||
func (element *File) HandleKeyUp(key input.Key, modifiers input.Modifiers) {
|
||||
if key == input.KeyEnter && element.pressed {
|
||||
element.pressed = false
|
||||
element.drawAndPush()
|
||||
if !element.Enabled() { return }
|
||||
if element.onChoose != nil {
|
||||
element.onChoose()
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (element *File) OnChoose (callback func ()) {
|
||||
element.onChoose = callback
|
||||
}
|
||||
|
||||
func (element *File) HandleMouseDown (x, y int, button input.Button) {
|
||||
if !element.Enabled() { return }
|
||||
if !element.Focused() { element.Focus() }
|
||||
if button != input.ButtonLeft { return }
|
||||
element.pressed = true
|
||||
element.drawAndPush()
|
||||
}
|
||||
|
||||
func (element *File) HandleMouseUp (x, y int, button input.Button) {
|
||||
if button != input.ButtonLeft { return }
|
||||
element.pressed = false
|
||||
within := image.Point { x, y }.
|
||||
In(element.Bounds())
|
||||
if time.Since(element.lastClick) < time.Second / 2 {
|
||||
if element.Enabled() && within && element.onChoose != nil {
|
||||
element.onChoose()
|
||||
}
|
||||
} else {
|
||||
element.lastClick = time.Now()
|
||||
}
|
||||
element.drawAndPush()
|
||||
}
|
||||
|
||||
// SetTheme sets the element's theme.
|
||||
func (element *File) SetTheme (new theme.Theme) {
|
||||
if new == element.theme.Theme { return }
|
||||
element.theme.Theme = new
|
||||
element.drawAndPush()
|
||||
}
|
||||
|
||||
// SetConfig sets the element's configuration.
|
||||
func (element *File) SetConfig (new config.Config) {
|
||||
if new == element.config.Config { return }
|
||||
element.config.Config = new
|
||||
element.drawAndPush()
|
||||
}
|
||||
|
||||
func (element *File) state () theme.State {
|
||||
return theme.State {
|
||||
Disabled: !element.Enabled(),
|
||||
Focused: element.Focused(),
|
||||
Pressed: element.pressed,
|
||||
On: element.selected,
|
||||
}
|
||||
}
|
||||
|
||||
func (element *File) icon () artist.Icon {
|
||||
return element.theme.Icon(element.iconID, theme.IconSizeLarge)
|
||||
}
|
||||
|
||||
func (element *File) updateMinimumSize () {
|
||||
padding := element.theme.Padding(theme.PatternButton)
|
||||
icon := element.icon()
|
||||
if icon == nil {
|
||||
element.core.SetMinimumSize (
|
||||
padding.Horizontal(),
|
||||
padding.Vertical())
|
||||
} else {
|
||||
bounds := padding.Inverse().Apply(icon.Bounds())
|
||||
element.core.SetMinimumSize(bounds.Dx(), bounds.Dy())
|
||||
}
|
||||
}
|
||||
|
||||
func (element *File) drawAndPush () {
|
||||
if element.core.HasImage() {
|
||||
element.drawAll()
|
||||
element.core.DamageAll()
|
||||
}
|
||||
}
|
||||
|
||||
func (element *File) drawAll () {
|
||||
// background
|
||||
state := element.state()
|
||||
bounds := element.Bounds()
|
||||
sink := element.theme.Sink(theme.PatternButton)
|
||||
element.theme.
|
||||
Pattern(theme.PatternButton, state).
|
||||
Draw(element.core, bounds)
|
||||
|
||||
// icon
|
||||
icon := element.icon()
|
||||
if icon != nil {
|
||||
iconBounds := icon.Bounds()
|
||||
offset := image.Pt (
|
||||
(bounds.Dx() - iconBounds.Dx()) / 2,
|
||||
(bounds.Dy() - iconBounds.Dy()) / 2)
|
||||
if element.pressed {
|
||||
offset = offset.Add(sink)
|
||||
}
|
||||
icon.Draw (
|
||||
element.core,
|
||||
element.theme.Color (
|
||||
theme.ColorForeground, state),
|
||||
bounds.Min.Add(offset))
|
||||
}
|
||||
}
|
||||
25
elements/file/fs.go
Normal file
25
elements/file/fs.go
Normal file
@ -0,0 +1,25 @@
|
||||
package fileElements
|
||||
|
||||
import "os"
|
||||
import "io/fs"
|
||||
|
||||
// ReadDirStatFS is a combination of fs.ReadDirFS and fs.StatFS. It is the
|
||||
// minimum filesystem needed to satisfy a directory view.
|
||||
type ReadDirStatFS interface {
|
||||
fs.ReadDirFS
|
||||
fs.StatFS
|
||||
}
|
||||
|
||||
type defaultFS struct { }
|
||||
|
||||
func (defaultFS) Open (name string) (fs.File, error) {
|
||||
return os.Open(name)
|
||||
}
|
||||
|
||||
func (defaultFS) ReadDir (name string) ([]fs.DirEntry, error) {
|
||||
return os.ReadDir(name)
|
||||
}
|
||||
|
||||
func (defaultFS) Stat (name string) (fs.FileInfo, error) {
|
||||
return os.Stat(name)
|
||||
}
|
||||
92
examples/fileBrowser/main.go
Normal file
92
examples/fileBrowser/main.go
Normal file
@ -0,0 +1,92 @@
|
||||
package main
|
||||
|
||||
import "os"
|
||||
import "path/filepath"
|
||||
import "git.tebibyte.media/sashakoshka/tomo"
|
||||
import "git.tebibyte.media/sashakoshka/tomo/theme"
|
||||
import "git.tebibyte.media/sashakoshka/tomo/layouts/basic"
|
||||
import "git.tebibyte.media/sashakoshka/tomo/elements/file"
|
||||
import "git.tebibyte.media/sashakoshka/tomo/elements/basic"
|
||||
import "git.tebibyte.media/sashakoshka/tomo/elements/containers"
|
||||
import _ "git.tebibyte.media/sashakoshka/tomo/backends/all"
|
||||
|
||||
func main () {
|
||||
tomo.Run(run)
|
||||
}
|
||||
|
||||
func run () {
|
||||
window, _ := tomo.NewWindow(384, 384)
|
||||
window.SetTitle("File browser")
|
||||
container := containers.NewContainer(basicLayouts.Vertical { true, true })
|
||||
window.Adopt(container)
|
||||
homeDir, _ := os.UserHomeDir()
|
||||
|
||||
controlBar := containers.NewContainer(basicLayouts.Horizontal { })
|
||||
backButton := basicElements.NewButton("Back")
|
||||
backButton.SetIcon(theme.IconBackward)
|
||||
backButton.ShowText(false)
|
||||
forwardButton := basicElements.NewButton("Forward")
|
||||
forwardButton.SetIcon(theme.IconForward)
|
||||
forwardButton.ShowText(false)
|
||||
refreshButton := basicElements.NewButton("Refresh")
|
||||
refreshButton.SetIcon(theme.IconRefresh)
|
||||
refreshButton.ShowText(false)
|
||||
upwardButton := basicElements.NewButton("Go Up")
|
||||
upwardButton.SetIcon(theme.IconUpward)
|
||||
upwardButton.ShowText(false)
|
||||
locationInput := basicElements.NewTextBox("Location", "")
|
||||
|
||||
statusBar := containers.NewContainer(basicLayouts.Horizontal { true, false })
|
||||
directory, _ := fileElements.NewFile(homeDir, nil)
|
||||
baseName := basicElements.NewLabel(filepath.Base(homeDir), false)
|
||||
|
||||
scrollContainer := containers.NewScrollContainer(false, true)
|
||||
directoryView, _ := fileElements.NewDirectory(homeDir, nil)
|
||||
updateStatus := func () {
|
||||
filePath, _ := directoryView.Location()
|
||||
directory.SetLocation(filePath, nil)
|
||||
locationInput.SetValue(filePath)
|
||||
baseName.SetText(filepath.Base(filePath))
|
||||
}
|
||||
choose := func (filePath string) {
|
||||
directoryView.SetLocation(filePath, nil)
|
||||
updateStatus()
|
||||
}
|
||||
directoryView.OnChoose(choose)
|
||||
locationInput.OnEnter (func () {
|
||||
choose(locationInput.Value())
|
||||
})
|
||||
choose(homeDir)
|
||||
backButton.OnClick (func () {
|
||||
directoryView.Backward()
|
||||
updateStatus()
|
||||
})
|
||||
forwardButton.OnClick (func () {
|
||||
directoryView.Forward()
|
||||
updateStatus()
|
||||
})
|
||||
refreshButton.OnClick (func () {
|
||||
directoryView.Update()
|
||||
updateStatus()
|
||||
})
|
||||
upwardButton.OnClick (func () {
|
||||
filePath, _ := directoryView.Location()
|
||||
choose(filepath.Dir(filePath))
|
||||
})
|
||||
|
||||
controlBar.Adopt(backButton, false)
|
||||
controlBar.Adopt(forwardButton, false)
|
||||
controlBar.Adopt(refreshButton, false)
|
||||
controlBar.Adopt(upwardButton, false)
|
||||
controlBar.Adopt(locationInput, true)
|
||||
scrollContainer.Adopt(directoryView)
|
||||
statusBar.Adopt(directory, false)
|
||||
statusBar.Adopt(baseName, false)
|
||||
|
||||
container.Adopt(controlBar, false)
|
||||
container.Adopt(scrollContainer, true)
|
||||
container.Adopt(statusBar, false)
|
||||
|
||||
window.OnClose(tomo.Stop)
|
||||
window.Show()
|
||||
}
|
||||
Reference in New Issue
Block a user