diff options
Diffstat (limited to 'layout/region.go')
| -rw-r--r-- | layout/region.go | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/layout/region.go b/layout/region.go index 1e92455..4e3a791 100644 --- a/layout/region.go +++ b/layout/region.go @@ -15,7 +15,9 @@ type Region struct { // NewRegion creates a region layout that occupies part of the parent env's area, as determined by the resize function. // Resize takes the area of the parent and returns the area of the region. -func NewRegion(env gui.Env, resize func(image.Rectangle) image.Rectangle) gui.Env { +func NewRegion(env gui.Env, resize func(image.Rectangle) image.Rectangle, o ...Option) gui.Env { + opts := evalOptions(o...) + events := make(chan gui.Event) // to child drw := make(chan func(draw.Image) image.Rectangle) // from child @@ -25,17 +27,20 @@ func NewRegion(env gui.Env, resize func(image.Rectangle) image.Rectangle) gui.En area := resize(event.(gui.Resize).Rectangle) // first event guaranteed to be Resize events <- gui.Resize{area} + env.Draw() <- drawBackground(opts.bg) + for { select { - case event := <-env.Events(): + case event := <-env.Events(): // event from parent switch event := event.(type) { case gui.Resize: + env.Draw() <- drawBackground(opts.bg) area = resize(event.Rectangle) - events <- gui.Resize{area} + events <- gui.Resize{area} // forward to child default: events <- event } - case f, ok := <-drw: + case f, ok := <-drw: // draw call from child if !ok { close(events) close(env.Draw()) |