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fixed some bugs and added column helper

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This commit is contained in:
Ellpeck 2019-08-24 14:34:08 +02:00
parent 2698153491
commit d69033a315
4 changed files with 35 additions and 9 deletions
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6
Demos/UiDemo.cs
View file

@ -159,6 +159,12 @@ namespace Demos {
root.AddChild(new Paragraph(Anchor.AutoLeft, 1, "There are also some additional \"components\" which are created as combinations of other components. You can find all of them in the ElementHelper class. Here are some examples:"));
root.AddChild(ElementHelper.NumberField(Anchor.AutoLeft, new Vector2(1, 10))).PositionOffset = new Vector2(0, 1);
root.AddChild(new Paragraph(Anchor.AutoLeft, 1, "There is an easy helper method to make any amount of same-sized columns:") {PositionOffset = new Vector2(0, 1)});
var cols = ElementHelper.MakeColumns(root, new Vector2(1), 3);
cols[0].AddChild(new Paragraph(Anchor.AutoLeft, 1, "This is the first column"));
cols[1].AddChild(new Paragraph(Anchor.AutoLeft, 1, "This is the second column"));
cols[2].AddChild(new Paragraph(Anchor.AutoLeft, 1, "This is the third column"));
// Below are some querying examples that help you find certain elements easily
var children = root.GetChildren();

24
MLEM.Ui/Elements/Element.cs
View file

@ -296,13 +296,8 @@ namespace MLEM.Ui.Elements {
child.ForceUpdateArea();
if (this.SetHeightBasedOnChildren && this.Children.Count > 0) {
var height = 0;
foreach (var child in this.Children) {
if (!child.isHidden && (child.Anchor <= Anchor.TopRight || child.Anchor >= Anchor.AutoLeft) && child.area.Bottom > height)
height = child.area.Bottom;
}
var newHeight = (height - pos.Y + this.ScaledChildPadding.Y) / this.Scale;
var lowest = this.GetLowestReachingChild();
var newHeight = (lowest.area.Bottom - pos.Y + this.ScaledChildPadding.Y) / this.Scale;
if (newHeight != this.size.Y) {
this.size.Y = newHeight;
if (this.Anchor > Anchor.TopRight)
@ -321,6 +316,21 @@ namespace MLEM.Ui.Elements {
return this.Area;
}
public Element GetLowestReachingChild() {
Element lowest = null;
// the lowest child is expected to be towards the back, so search is usually faster if done backwards
for (var i = this.Children.Count - 1; i >= 0; i--) {
var child = this.Children[i];
if (child.isHidden)
continue;
if (child.Anchor > Anchor.TopRight && child.Anchor < Anchor.AutoLeft)
continue;
if (lowest == null || child.Area.Bottom > lowest.Area.Bottom)
lowest = child;
}
return lowest;
}
public Element GetPreviousChild(bool hiddenAlso, bool unattachableAlso) {
if (this.Parent == null)
return null;

10
MLEM.Ui/Elements/ElementHelper.cs
View file

@ -4,6 +4,16 @@ using MLEM.Input;
namespace MLEM.Ui.Elements {
public static class ElementHelper {
public static Group[] MakeColumns(Element parent, Vector2 totalSize, int amount, bool setHeightBasedOnChildren = true) {
var cols = new Group[amount];
for (var i = 0; i < amount; i++) {
cols[i] = new Group(Anchor.AutoInline, new Vector2(totalSize.X / amount, totalSize.Y), setHeightBasedOnChildren);
if (parent != null)
parent.AddChild(cols[i]);
}
return cols;
}
public static Group NumberField(Anchor anchor, Vector2 size, int defaultValue = 0, int stepPerClick = 1, TextField.Rule rule = null, TextField.TextChanged onTextChange = null) {
var group = new Group(anchor, size, false);

4
MLEM.Ui/Elements/Panel.cs
View file

@ -65,9 +65,9 @@ namespace MLEM.Ui.Elements {
return;
// the "real" first child is the scroll bar, which we want to ignore
var firstChild = this.Children[1];
var lastChild = this.Children[this.Children.Count - 1];
var lowestChild = this.GetLowestReachingChild();
// the max value of the scrollbar is the amount of non-scaled pixels taken up by overflowing components
var childrenHeight = lastChild.Area.Bottom - firstChild.Area.Top;
var childrenHeight = lowestChild.Area.Bottom - firstChild.Area.Top;
this.ScrollBar.MaxValue = (childrenHeight - this.Area.Height) / this.Scale + this.ChildPadding.Y * 2;
// update the render target