113 lines
2.0 KiB
Go
113 lines
2.0 KiB
Go
package ui
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import (
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"opslag.de/schobers/geom"
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)
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type columns struct {
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ContainerBase
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cols []*column
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col int
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}
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type column struct {
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p DockPanel
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}
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func (c *column) Append(ctrl Control) {
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c.p.Append(DockTop, ctrl)
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}
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func (c *column) AppendCreate(ctx Context, ctrl Control) {
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c.p.AppendCreate(ctx, DockTop, ctrl)
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}
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type Columns interface {
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Container
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Columns() []Column
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Append(Control)
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AppendCreate(Context, Control)
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}
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type Column interface {
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Append(Control)
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AppendCreate(Context, Control)
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}
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func NewColumns(cols int, ctrls ...Control) Columns {
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var c = &columns{}
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for i := 0; i < cols; i++ {
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c.addColumn()
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}
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for _, ctrl := range ctrls {
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c.Append(ctrl)
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}
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return c
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}
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func (c *columns) addColumn() {
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var p = NewDockPanel(c)
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c.ContainerBase.Append(p)
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c.cols = append(c.cols, &column{p})
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}
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func (c *columns) next() {
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c.col = (c.col + 1) % len(c.cols)
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}
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func (c *columns) Columns() []Column {
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var cols = make([]Column, len(c.cols))
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for i, col := range c.cols {
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cols[i] = col
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}
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return cols
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}
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func (c *columns) Append(ctrl Control) {
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c.cols[c.col].Append(ctrl)
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c.next()
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}
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func (c *columns) AppendCreate(ctx Context, ctrl Control) {
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c.cols[c.col].AppendCreate(ctx, ctrl)
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c.next()
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}
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func (c *columns) DesiredSize(ctx Context) geom.PointF32 {
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var w float32
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var h float32
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for _, col := range c.cols {
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var sz = col.p.DesiredSize(ctx)
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if !geom.IsNaN32(w) {
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if geom.IsNaN32(sz.X) {
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w = sz.X
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} else {
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w += sz.X
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}
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}
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if !geom.IsNaN32(h) {
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if geom.IsNaN32(sz.Y) {
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h = sz.Y
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} else {
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h = geom.Max32(h, sz.Y)
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}
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}
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}
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return geom.PtF32(w, h)
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}
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func (c *columns) Arrange(ctx Context, rect geom.RectangleF32) {
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c.ContainerBase.SetRect(rect)
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var w, h = rect.Dx(), rect.Dy()
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var cols = float32(len(c.cols))
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for i, col := range c.cols {
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var ii = float32(i)
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var colH = col.p.DesiredSize(ctx).Y
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if colH > h {
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colH = h
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}
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var colR = geom.RectF32(rect.Min.X+ii*w/cols, rect.Min.Y, rect.Min.X+(ii+1)*w/cols, rect.Min.Y+colH)
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Arrange(ctx, col.p, colR)
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}
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}
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