53 lines
1.4 KiB
Go
53 lines
1.4 KiB
Go
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// Package layout defines the various layouts available to Fyne apps.
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package layout // import "fyne.io/fyne/v2/layout"
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import "fyne.io/fyne/v2"
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// Declare conformity with Layout interface
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var _ fyne.Layout = (*stackLayout)(nil)
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type stackLayout struct {
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}
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// NewStackLayout returns a new StackLayout instance. Objects are stacked
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// on top of each other with later objects on top of those before.
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// Having only a single object has no impact as CanvasObjects will
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// fill the available space even without a Stack.
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//
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// Since: 2.4
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func NewStackLayout() fyne.Layout {
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return &stackLayout{}
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}
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// NewMaxLayout creates a new MaxLayout instance
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//
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// Deprecated: Use layout.NewStackLayout() instead.
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func NewMaxLayout() fyne.Layout {
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return NewStackLayout()
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}
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// Layout is called to pack all child objects into a specified size.
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// For StackLayout this sets all children to the full size passed.
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func (m *stackLayout) Layout(objects []fyne.CanvasObject, size fyne.Size) {
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topLeft := fyne.NewPos(0, 0)
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for _, child := range objects {
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child.Resize(size)
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child.Move(topLeft)
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}
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}
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// MinSize finds the smallest size that satisfies all the child objects.
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// For StackLayout this is determined simply as the MinSize of the largest child.
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func (m *stackLayout) MinSize(objects []fyne.CanvasObject) fyne.Size {
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minSize := fyne.NewSize(0, 0)
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for _, child := range objects {
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if !child.Visible() {
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continue
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}
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minSize = minSize.Max(child.MinSize())
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}
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return minSize
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}
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