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95 lines
2.2 KiB
95 lines
2.2 KiB
package mightypork.gamecore.gui.components.layout.linear;
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import mightypork.gamecore.gui.components.DynamicWidthComponent;
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import mightypork.gamecore.gui.components.LayoutComponent;
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import mightypork.gamecore.gui.components.LinearComponent;
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import mightypork.utils.math.AlignX;
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import mightypork.utils.math.constraints.num.Num;
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import mightypork.utils.math.constraints.num.batch.NumSum;
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import mightypork.utils.math.constraints.rect.RectBound;
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import mightypork.utils.math.constraints.vect.Vect;
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import mightypork.utils.math.constraints.vect.proxy.VectAdapter;
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/**
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* Layout that aligns elements while taking into account their actual
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* dimensions.<br>
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* Useful eg. for buttons that stretch based on text length.
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*
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* @author Ondřej Hruška (MightyPork)
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*/
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public class LinearLayout extends LayoutComponent {
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public LinearLayout(AlignX align)
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{
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this.align = align;
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}
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public LinearLayout(RectBound context, AlignX align)
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{
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super(context);
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this.align = align;
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}
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private final NumSum totalWidth = new NumSum();
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private final Vect leftAlignOrigin = LinearLayout.this.origin();
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private final Vect centerAlignOrigin = LinearLayout.this.topCenter().sub(totalWidth.half(), Num.ZERO);
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private final Vect rightAlignOrigin = LinearLayout.this.topRight().sub(totalWidth, Num.ZERO);
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private final Vect leftMostOrigin = new VectAdapter() {
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@Override
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protected Vect getSource()
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{
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switch (align) {
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default:
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case LEFT:
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return leftAlignOrigin;
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case CENTER:
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return centerAlignOrigin;
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case RIGHT:
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return rightAlignOrigin;
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}
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}
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};
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private Vect nextOrigin = leftMostOrigin;
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private AlignX align = AlignX.LEFT;
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public void add(DynamicWidthComponent dwcomp)
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{
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add(new LinearWrapper(dwcomp));
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}
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public void add(LinearComponent lincomp)
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{
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lincomp.setHeight(height());
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lincomp.setOrigin(nextOrigin);
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nextOrigin = nextOrigin.add(lincomp.width(), Num.ZERO);
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totalWidth.addSummand(lincomp.width());
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attach(lincomp);
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}
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public void setAlign(AlignX align)
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{
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this.align = align;
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}
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/**
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* Add a gap.
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*
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* @param heightPercent percent of height for gap width
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*/
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public void gap(double heightPercent)
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{
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add(new LinearGap(heightPercent));
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}
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}
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