54 lines
1.2 KiB
Go
54 lines
1.2 KiB
Go
package buttonoverlay
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import "github.com/gotk3/gotk3/gtk"
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type Widget interface {
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gtk.IWidget
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SetMarginEnd(int)
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SetSizeRequest(int, int)
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SetHAlign(gtk.Align)
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}
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var _ Widget = (*gtk.Widget)(nil)
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type Button interface {
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Widget
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// Bin
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GetChild() (gtk.IWidget, error)
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// Container
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Add(gtk.IWidget)
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Remove(gtk.IWidget)
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// Button
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SetRelief(gtk.ReliefStyle)
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}
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var _ Button = (*gtk.Button)(nil)
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// Wrap wraps maincontent inside an overlay with smallbutton placed rightmost on
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// top of the content. It will also set the margins and aligns widgets.
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func Wrap(maincontent Widget, smallbutton Button, size int) *gtk.Overlay {
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maincontent.SetMarginEnd(size)
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smallbutton.SetSizeRequest(size, size)
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smallbutton.SetHAlign(gtk.ALIGN_END)
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smallbutton.SetRelief(gtk.RELIEF_NONE)
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o, _ := gtk.OverlayNew()
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o.Add(maincontent)
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o.AddOverlay(smallbutton)
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o.Show()
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return o
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}
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// Take takes over the given button and replaces its content with the wrapped
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// overlay, which has the old content as well as the smaller button on top.
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func Take(b, smallbutton Button, size int) {
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childv, _ := b.GetChild()
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widget := childv.ToWidget()
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// This will unreference.
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b.Remove(widget)
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// Wrap will reference.
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b.Add(Wrap(widget, smallbutton, size))
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}
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