forked from joejulian/gio
Elias Naur
75 lines
1.2 KiB
Go
75 lines
1.2 KiB
Go
package layout_test
|
|
|
|
import (
|
|
"fmt"
|
|
"image"
|
|
"time"
|
|
|
|
"gioui.org/ui"
|
|
"gioui.org/ui/layout"
|
|
)
|
|
|
|
type config struct{}
|
|
|
|
var cfg = new(config)
|
|
|
|
func ExampleInset() {
|
|
ops := new(ui.Ops)
|
|
|
|
// Loose constraints with no minimal size.
|
|
var cs layout.Constraints
|
|
cs.Width.Max = 100
|
|
cs.Height.Max = 100
|
|
|
|
// Inset all edges by 10.
|
|
inset := layout.UniformInset(ui.Dp(10))
|
|
cs = inset.Begin(cfg, ops, cs)
|
|
// Lay out a 50x50 sized widget.
|
|
dims := layoutWidget(50, 50, cs)
|
|
fmt.Println(dims.Size)
|
|
dims = inset.End(dims)
|
|
|
|
fmt.Println(dims.Size)
|
|
|
|
// Output:
|
|
// (50,50)
|
|
// (70,70)
|
|
}
|
|
|
|
func ExampleAlign() {
|
|
ops := new(ui.Ops)
|
|
|
|
cs := layout.RigidConstraints(image.Point{X: 100, Y: 100})
|
|
|
|
align := layout.Align{Alignment: layout.Center}
|
|
cs = align.Begin(ops, cs)
|
|
// Lay out a 50x50 sized widget.
|
|
dims := layoutWidget(50, 50, cs)
|
|
fmt.Println(dims.Size)
|
|
|
|
dims = align.End(dims)
|
|
|
|
fmt.Println(dims.Size)
|
|
|
|
// Output:
|
|
// (50,50)
|
|
// (100,100)
|
|
}
|
|
|
|
func layoutWidget(width, height int, cs layout.Constraints) layout.Dimens {
|
|
return layout.Dimens{
|
|
Size: image.Point{
|
|
X: width,
|
|
Y: height,
|
|
},
|
|
}
|
|
}
|
|
|
|
func (config) Now() time.Time {
|
|
return time.Now()
|
|
}
|
|
|
|
func (config) Px(v ui.Value) int {
|
|
return int(v.V + .5)
|
|
}
|