77 lines
2.1 KiB
Go
77 lines
2.1 KiB
Go
package layout
|
|
|
|
import (
|
|
"github.com/egoist/mygo/ui"
|
|
|
|
"github.com/ZacharyZhang-NY/MujicaUI/core"
|
|
)
|
|
|
|
// GridOptions configure a Grid.
|
|
type GridOptions struct {
|
|
// Columns size each column with ui.Fixed, ui.Fr or ui.FitContent; nil is one Fr(1) column.
|
|
Columns []ui.Track
|
|
// Rows size the first rows; rows added after fit their content.
|
|
Rows []ui.Track
|
|
// Gap defaults to SpaceM.
|
|
Gap Space
|
|
// RowGap defaults to Gap.
|
|
RowGap Space
|
|
}
|
|
|
|
// Grid lays children out in columns and rows; GridCell places and spans them.
|
|
func Grid(c *ui.Context, opts GridOptions, children func()) *ui.Element {
|
|
if children == nil {
|
|
panic("mujica: Grid needs children")
|
|
}
|
|
d := core.Density(c)
|
|
gap := containerSpace(d, opts.Gap, SpaceM)
|
|
rowGap := gap
|
|
if opts.RowGap != SpaceDefault {
|
|
rowGap = containerSpace(d, opts.RowGap, SpaceM)
|
|
}
|
|
cols := opts.Columns
|
|
if len(cols) == 0 {
|
|
cols = []ui.Track{ui.Fr(1)}
|
|
}
|
|
e := ui.Grid(c).ColumnTracks(cols...).GapX(gap).GapY(rowGap)
|
|
if len(opts.Rows) > 0 {
|
|
e.RowTracks(opts.Rows...)
|
|
}
|
|
return e.Children(children)
|
|
}
|
|
|
|
// GridCellOptions place one cell. Lines count from 1; zero places the cell automatically.
|
|
type GridCellOptions struct {
|
|
Column, Row int
|
|
// ColumnSpan and RowSpan default to 1; -1 spans to the last track.
|
|
ColumnSpan, RowSpan int
|
|
}
|
|
|
|
// GridCell is one child of a Grid, placed and spanned by opts; build makes one element, stretched over the cell.
|
|
func GridCell(c *ui.Context, opts GridCellOptions, build func()) *ui.Element {
|
|
if build == nil {
|
|
panic("mujica: GridCell needs build")
|
|
}
|
|
if opts.Column < 0 || opts.Row < 0 {
|
|
panic("mujica: GridCell Column and Row count from 1")
|
|
}
|
|
if opts.ColumnSpan < -1 || opts.RowSpan < -1 {
|
|
panic("mujica: GridCell spans must be positive, or -1 for the rest")
|
|
}
|
|
// A one-track grid stretches its child over the whole cell, as the grid does its own children.
|
|
e := ui.Grid(c).Columns(1).Rows(1)
|
|
if opts.Column > 0 {
|
|
e.ColumnStart(opts.Column)
|
|
}
|
|
if opts.Row > 0 {
|
|
e.RowStart(opts.Row)
|
|
}
|
|
if opts.ColumnSpan != 0 {
|
|
e.ColumnSpan(opts.ColumnSpan)
|
|
}
|
|
if opts.RowSpan != 0 {
|
|
e.RowSpan(opts.RowSpan)
|
|
}
|
|
return e.Children(build)
|
|
}
|