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d92426a100
The Model was getting unmaintanable mess. This is an attempt to refactor/rewrite the Model so that data of certain type is exposed in standardized way, offering certain standard manipulations for that data type, and on the GUI side, certain standard widgets to tied to that data. This rewrite closes #72, #106 and #120.
56 lines
1.0 KiB
Go
56 lines
1.0 KiB
Go
package gioui
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import (
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"image/color"
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"gioui.org/layout"
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"gioui.org/op"
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"gioui.org/op/clip"
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"gioui.org/op/paint"
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)
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type Surface struct {
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Gray int
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Inset layout.Inset
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FitSize bool
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Focus bool
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}
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func (s Surface) Layout(gtx C, widget layout.Widget) D {
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bg := func(gtx C) D {
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grayInt := s.Gray
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if s.Focus {
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grayInt += 8
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}
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var grayUint8 uint8
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if grayInt < 0 {
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grayUint8 = 0
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} else if grayInt > 255 {
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grayUint8 = 255
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} else {
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grayUint8 = uint8(grayInt)
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}
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color := color.NRGBA{R: grayUint8, G: grayUint8, B: grayUint8, A: 255}
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paint.FillShape(gtx.Ops, color, clip.Rect{
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Max: gtx.Constraints.Min,
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}.Op())
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return D{Size: gtx.Constraints.Min}
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}
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fg := func(gtx C) D {
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return s.Inset.Layout(gtx, widget)
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}
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if s.FitSize {
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macro := op.Record(gtx.Ops)
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dims := fg(gtx)
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call := macro.Stop()
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gtx.Constraints = layout.Exact(dims.Size)
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bg(gtx)
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call.Add(gtx.Ops)
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return dims
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}
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gtxbg := gtx
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gtxbg.Constraints.Min = gtxbg.Constraints.Max
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bg(gtxbg)
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return fg(gtx)
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}
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