diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/ui/grid.go | 26 |
1 files changed, 16 insertions, 10 deletions
diff --git a/lib/ui/grid.go b/lib/ui/grid.go index b47c6bd..cff5577 100644 --- a/lib/ui/grid.go +++ b/lib/ui/grid.go @@ -31,10 +31,12 @@ const ( type GridSpec struct { // One of SIZE_EXACT or SIZE_WEIGHT Strategy int - // If Strategy = SIZE_EXACT, this is the number of cells this row/col shall - // occupy. If SIZE_WEIGHT, the space left after all exact rows/cols are - // measured is distributed amonst the remainder weighted by this value. - Size int + + // If Strategy = SIZE_EXACT, this function returns the number of cells + // this row/col shall occupy. If SIZE_WEIGHT, the space left after all + // exact rows/cols are measured is distributed amonst the remainder + // weighted by the value returned by this function. + Size func() int } // Used to cache layout of each row/column @@ -61,11 +63,11 @@ func NewGrid() *Grid { func MakeGrid(numRows, numCols, rowStrategy, colStrategy int) *Grid { rows := make([]GridSpec, numRows) for i := 0; i < numRows; i++ { - rows[i] = GridSpec{rowStrategy, 1} + rows[i] = GridSpec{rowStrategy, Const(1)} } cols := make([]GridSpec, numCols) for i := 0; i < numCols; i++ { - cols[i] = GridSpec{colStrategy, 1} + cols[i] = GridSpec{colStrategy, Const(1)} } return NewGrid().Rows(rows).Columns(cols) } @@ -191,10 +193,10 @@ func (grid *Grid) reflow(ctx *Context) { nweights := 0 for _, spec := range *specs { if spec.Strategy == SIZE_EXACT { - exact += spec.Size + exact += spec.Size() } else if spec.Strategy == SIZE_WEIGHT { nweights += 1 - weight += spec.Size + weight += spec.Size() } } offset := 0 @@ -205,9 +207,9 @@ func (grid *Grid) reflow(ctx *Context) { for _, spec := range *specs { layout := gridLayout{Offset: offset} if spec.Strategy == SIZE_EXACT { - layout.Size = spec.Size + layout.Size = spec.Size() } else if spec.Strategy == SIZE_WEIGHT { - proportion := float64(spec.Size) / float64(weight) + proportion := float64(spec.Size()) / float64(weight) size := proportion * float64(extent-exact) if remainingExact > 0 { extraExact := int(math.Ceil(proportion * float64(remainingExact))) @@ -284,3 +286,7 @@ func (grid *Grid) cellInvalidated(drawable Drawable) { cell.invalid.Store(true) grid.DoInvalidate(grid) } + +func Const(i int) func() int { + return func() int { return i } +} |