96 lines
1.8 KiB
Go
96 lines
1.8 KiB
Go
package gui
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import (
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"git.wit.org/wit/gui/toolkit"
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)
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// Grid numbering examples (H) or (W,H)
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// -----------------------
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// -- (1) -- (2) -- (3) -- (X)
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// -----------------------
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//
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// (Y)
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// ---------
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// -- (1) --
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// -- (2) --
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// ---------
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//
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// (X,Y)
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// -----------------------------
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// -- (1,1) -- (2,1) -- (3,1) --
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// -- (1,2) -- (2,2) -- (3,2) --
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// -- (1,3) -- -- (3,3) --
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// -----------------------------
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func (n *Node) NewGrid(name string, w int, h int) *Node {
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newNode := n.newNode(name, toolkit.Grid, func() {
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log(debugChange, "click() NewGrid not defined =", name)
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})
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a := newAction(newNode, toolkit.Add)
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a.X = w
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a.Y = h
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newNode.X = w
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newNode.Y = h
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newNode.NextW = 1
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newNode.NextH = 1
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sendAction(a)
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return newNode
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}
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// true if the grid already have a child at W,H
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func (n *Node) gridCollision() bool {
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for _, child := range n.children {
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if ((child.AtW == n.NextW) && (child.AtH == n.NextH)) {
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return true
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}
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}
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return false
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}
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// keeps incrementing NextW & NextH until there is not a widget
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func (n *Node) gridIncrement() {
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if ! n.gridCollision() {
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return
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}
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n.NextH += 1
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if (n.NextH > n.Y) {
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n.NextW += 1
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n.NextH = 1
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}
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n.gridIncrement()
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}
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func (n *Node) At(w int, h int) *Node {
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if (n == nil) {
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return n
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}
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n.NextW = w
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n.NextH = h
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n.gridIncrement()
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if (n.NextW != w) || (n.NextH != h) {
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log(logError, "At() (W,H)", w, h, " was moved to avoid a collision (W,H) =", n.NextW, n.NextH)
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}
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return n
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}
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// finds the next place on the grid to place the new node 'n'
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func placeGrid(a *toolkit.Action, n *Node, where *Node) {
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where.NextH += 1
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if (where.NextH > where.Y) {
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where.NextW += 1
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where.NextH = 1
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}
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a.X = where.NextW
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a.Y = where.NextH
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log(logNow, "placeGrid() (X,Y)", where.X, where.Y, " next(X,Y) =", where.NextW, where.NextH)
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}
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