4ce8f4ea51fb00a58f4b91a2aa4be5b9f35d3968 — Elias Naur a month ago 3c941e9
ui/layout: add Inset example

Signed-off-by: Elias Naur <mail@eliasnaur.com>
1 files changed, 55 insertions(+), 0 deletions(-)

A ui/layout/layout_test.go
A ui/layout/layout_test.go => ui/layout/layout_test.go +55 -0
@@ 0,0 1,55 @@
+ package layout_test
+ 
+ import (
+ 	"fmt"
+ 	"image"
+ 	"time"
+ 
+ 	"gioui.org/ui"
+ 	"gioui.org/ui/layout"
+ )
+ 
+ type config struct{}
+ 
+ var cfg = new(config)
+ 
+ var cs = layout.Constraints{
+ 	Width: layout.Constraint{
+ 		Max: 100,
+ 	},
+ 	Height: layout.Constraint{
+ 		Max: 100,
+ 	},
+ }
+ 
+ func ExampleInset() {
+ 	ops := new(ui.Ops)
+ 
+ 	// 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)
+ 	dims = inset.End(dims)
+ 
+ 	fmt.Println(dims.Size)
+ 
+ 	// Output: (70,70)
+ }
+ 
+ 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)
+ }