giowrap/cmd/grid/main.go

63 lines
1.1 KiB
Go

package main
import (
"image"
"gioui.org/ui"
"gioui.org/ui/app"
"gioui.org/ui/f32"
"gioui.org/ui/layout"
"gioui.org/ui/paint"
gio "git.wow.st/gmp/giowrap"
)
func main() {
go func() {
w := app.NewWindow()
ops := new(ui.Ops)
gcs := make([]gio.GridChild, 0)
for e := range w.Events() {
if e, ok := e.(app.UpdateEvent); ok {
ops.Reset()
c := &e.Config
cs := layout.RigidConstraints(e.Size)
nrows := 5
ncols := 10
grid := gio.Grid{Cols: ncols}
cs = grid.Init(ops, cs)
for i := 0; i < nrows*ncols; i++ {
grid.Begin()
dims := layoutRect(c, ops, cs)
gcs = append(gcs, grid.End(dims))
}
grid.Layout(gcs...)
w.Update(ops)
gcs = gcs[0:0]
}
}
}()
app.Main()
}
func layoutRect(c ui.Config, ops *ui.Ops, cs layout.Constraints) layout.Dimens {
ins := layout.UniformInset(ui.Px(10))
cs = ins.Begin(c, ops, cs)
paint.PaintOp{Rect: f32.Rectangle{
Max: f32.Point{
X: float32(cs.Width.Max),
Y: float32(cs.Width.Max),
},
}}.Add(ops)
dims := layout.Dimens{
Size: image.Point{
X: cs.Width.Max,
Y: cs.Width.Max,
},
}
return ins.End(dims)
}