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Allow scrolling panels to set height based on children with TreatSizeAsMaximum

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Ell 2024-05-29 23:30:12 +02:00
parent 85d20b6433
commit f499ed94a7
3 changed files with 14 additions and 9 deletions
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3
CHANGELOG.md
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@ -28,6 +28,9 @@ Additions
- Added the ability to set the anchor that should be used when a tooltip attaches to an element or the mouse
- Added the ability to display tooltips using the auto-nav style even when using the mouse
Improvements
- Allow scrolling panels to set height based on children with TreatSizeAsMaximum
## 6.3.1
No code changes

14
Demos/UiDemo.cs
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@ -223,14 +223,16 @@ namespace Demos {
PositionOffset = new Vector2(0, 1)
});
var subPanel = this.root.AddChild(new Panel(Anchor.AutoLeft, new Vector2(1, 25), Vector2.Zero, false, true) {
PositionOffset = new Vector2(0, 1),
this.root.AddChild(new VerticalSpace(3));
var dynamicSubPanel = this.root.AddChild(new Panel(Anchor.AutoLeft, new Vector2(1, 50), Vector2.Zero, true, true) {
Texture = null,
ChildPadding = Padding.Empty
ChildPadding = Padding.Empty,
TreatSizeAsMaximum = true
});
dynamicSubPanel.AddChild(new Paragraph(Anchor.AutoLeft, 1, "This is a dynamic height nested panel with a maximum height, at which point it starts displaying a scroll bar instead!"));
dynamicSubPanel.AddChild(new Button(Anchor.AutoLeft, new Vector2(1, 10), "Press to add more") {
OnPressed = _ => dynamicSubPanel.AddChild(new Button(Anchor.AutoLeft, new Vector2(1, 10), "I do nothing"))
});
subPanel.AddChild(new Paragraph(Anchor.AutoLeft, 1, "This is a nested scrolling panel!"));
for (var i = 1; i <= 5; i++)
subPanel.AddChild(new Button(Anchor.AutoLeft, new Vector2(1, 10), $"Button {i}") {PositionOffset = new Vector2(0, 1)});
const string alignText = "Paragraphs can have <l Left>left</l> aligned text, <l Right>right</l> aligned text and <l Center>center</l> aligned text.";
this.root.AddChild(new VerticalSpace(3));

6
MLEM.Ui/Elements/Panel.cs
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@ -119,8 +119,8 @@ namespace MLEM.Ui.Elements {
public override void ForceUpdateArea() {
if (this.scrollOverflow) {
// sanity check
if (this.SetHeightBasedOnChildren)
throw new NotSupportedException("A panel can't both set height based on children and scroll overflow");
if (this.SetHeightBasedOnChildren && !this.TreatSizeAsMaximum)
throw new NotSupportedException("A panel can't both scroll overflow and set height based on children without a maximum");
foreach (var child in this.Children) {
if (child != this.ScrollBar && !child.Anchor.IsAuto())
throw new NotSupportedException($"A panel that handles overflow can't contain non-automatic anchors ({child})");
@ -295,7 +295,7 @@ namespace MLEM.Ui.Elements {
if (this.Children.Count > 1) {
var highestValidChild = this.Children.FirstOrDefault(c => c != this.ScrollBar && !c.IsHidden);
var lowestChild = this.GetLowestChild(c => c != this.ScrollBar && !c.IsHidden, true);
childrenHeight = lowestChild.GetTotalCoveredArea(false).Bottom - highestValidChild.Area.Top;
childrenHeight = lowestChild.GetTotalCoveredArea(true).Bottom - highestValidChild.UnscrolledArea.Top;
} else {
// if we only have one child (the scroll bar), then the children take up no visual height
childrenHeight = 0;