101 lines
2.4 KiB
Go
101 lines
2.4 KiB
Go
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package widget
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import (
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"fyne.io/fyne/v2"
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"fyne.io/fyne/v2/driver/desktop"
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)
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var _ fyne.Widget = (*OverlayContainer)(nil)
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var _ fyne.Tappable = (*OverlayContainer)(nil)
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// OverlayContainer is a transparent widget containing one fyne.CanvasObject and meant to be used as overlay.
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type OverlayContainer struct {
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Base
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Content fyne.CanvasObject
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canvas fyne.Canvas
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onDismiss func()
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shown bool
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}
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// NewOverlayContainer creates an OverlayContainer.
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func NewOverlayContainer(c fyne.CanvasObject, canvas fyne.Canvas, onDismiss func()) *OverlayContainer {
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o := &OverlayContainer{canvas: canvas, Content: c, onDismiss: onDismiss}
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o.ExtendBaseWidget(o)
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return o
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}
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// CreateRenderer returns a new renderer for the overlay container.
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//
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// Implements: fyne.Widget
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func (o *OverlayContainer) CreateRenderer() fyne.WidgetRenderer {
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return &overlayRenderer{BaseRenderer{[]fyne.CanvasObject{o.Content}}, o}
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}
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// Hide hides the overlay container.
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//
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// Implements: fyne.Widget
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func (o *OverlayContainer) Hide() {
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if o.shown {
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o.canvas.Overlays().Remove(o)
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o.shown = false
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}
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o.Base.Hide()
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}
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// MouseIn catches mouse-in events not handled by the container’s content. It does nothing.
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//
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// Implements: desktop.Hoverable
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func (o *OverlayContainer) MouseIn(*desktop.MouseEvent) {
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}
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// MouseMoved catches mouse-moved events not handled by the container’s content. It does nothing.
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//
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// Implements: desktop.Hoverable
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func (o *OverlayContainer) MouseMoved(*desktop.MouseEvent) {
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}
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// MouseOut catches mouse-out events not handled by the container’s content. It does nothing.
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//
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// Implements: desktop.Hoverable
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func (o *OverlayContainer) MouseOut() {
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}
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// Show makes the overlay container visible.
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//
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// Implements: fyne.Widget
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func (o *OverlayContainer) Show() {
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if !o.shown {
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o.canvas.Overlays().Add(o)
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o.shown = true
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}
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o.Base.Show()
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}
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// Tapped catches tap events not handled by the container’s content.
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// It performs the overlay container’s dismiss action.
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//
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// Implements: fyne.Tappable
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func (o *OverlayContainer) Tapped(*fyne.PointEvent) {
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if o.onDismiss != nil {
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o.onDismiss()
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}
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}
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type overlayRenderer struct {
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BaseRenderer
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o *OverlayContainer
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}
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var _ fyne.WidgetRenderer = (*overlayRenderer)(nil)
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func (r *overlayRenderer) Layout(fyne.Size) {
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}
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func (r *overlayRenderer) MinSize() fyne.Size {
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return r.o.canvas.Size()
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}
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func (r *overlayRenderer) Refresh() {
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}
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