42 lines
980 B
Go
42 lines
980 B
Go
package gel
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import l "gioui.org/layout"
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type Stack struct {
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*l.Stack
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children []l.StackChild
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}
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// Stack starts a chain of widgets to compose into a stack
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func (w *Window) Stack() (out *Stack) {
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out = &Stack{
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Stack: &l.Stack{},
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}
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return
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}
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func (s *Stack) Alignment(alignment l.Direction) *Stack {
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s.Stack.Alignment = alignment
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return s
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}
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// functions to chain widgets to stack (first is lowest last highest)
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// Stacked appends a widget to the stack, the stack's dimensions will be
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// computed from the largest widget in the stack
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func (s *Stack) Stacked(w l.Widget) (out *Stack) {
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s.children = append(s.children, l.Stacked(w))
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return s
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}
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// Expanded lays out a widget with the same max constraints as the stack
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func (s *Stack) Expanded(w l.Widget) (out *Stack) {
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s.children = append(s.children, l.Expanded(w))
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return s
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}
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// Fn runs the ops queue configured in the stack
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func (s *Stack) Fn(c l.Context) l.Dimensions {
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return s.Stack.Layout(c, s.children...)
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}
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