diff options
| -rw-r--r-- | main_test.go | 3 | ||||
| -rw-r--r-- | stack.go | 8 |
2 files changed, 10 insertions, 1 deletions
diff --git a/main_test.go b/main_test.go index 23a2e16..370e102 100644 --- a/main_test.go +++ b/main_test.go @@ -27,7 +27,8 @@ func TestMain(t *testing.T) { decButton := NewButton("Dec") sincdec := NewStack(Horizontal, incButton, decButton) password := NewPasswordEdit() - s0 := NewStack(Vertical, s2, c, cb1, cb2, e, s3, pbar, sincdec, password) + s0 := NewStack(Vertical, s2, c, cb1, cb2, e, s3, pbar, sincdec, Space(), password) + s0.SetStretchy(8) lb1 := NewListbox(true, "Select One", "Or More", "To Continue") lb2 := NewListbox(false, "Select", "Only", "One", "Please") i := 0 @@ -16,6 +16,7 @@ const ( // A Stack stacks controls horizontally or vertically within the Stack's parent. // A horizontal Stack gives all controls the same height and their preferred widths. // A vertical Stack gives all controls the same width and their preferred heights. +// Any extra space at the end of a Stack is left blank. // Some controls may be marked as "stretchy": when the Window they are in changes size, stretchy controls resize to take up the remaining space after non-stretchy controls are laid out. If multiple controls are marked stretchy, they are alloted equal distribution of the remaining space. type Stack struct { lock sync.Mutex @@ -162,3 +163,10 @@ func (s *Stack) preferredSize() (width int, height int, err error) { } return } + +// Space() returns a null control intended for padding layouts with blank space where otherwise impossible (for instance, at the beginning or in the middle of a Stack). +// In order for Space() to work, it must be marked as stretchy in its parent layout; otherwise its size is undefined. +func Space() Control { + // As above, a stack with no controls draws nothing and reports no errors; its parent will still size it properly. + return NewStack(Horizontal) +} |