83 lines
1.4 KiB
Go
83 lines
1.4 KiB
Go
package gui
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import (
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"go.wit.com/log"
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"go.wit.com/gui/widget"
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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, widget.Grid)
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newNode.W = w
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newNode.H = h
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newNode.NextW = 1
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newNode.NextH = 1
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if ! newNode.hidden {
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a := newAction(newNode, widget.Add)
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sendAction(a)
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}
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// by default, always pad grids
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newNode.Pad()
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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.NextW += 1
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if (n.NextW > n.W) {
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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.Warn("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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