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https://github.com/Ellpeck/MLEM.git
synced 2024-12-24 17:29:23 +01:00
added the ability to move roots to front or back
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7ebcbec56b
commit
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3 changed files with 54 additions and 52 deletions
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@ -116,6 +116,7 @@ namespace MLEM.Ui.Elements {
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public float DrawAlpha = 1;
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public bool HasCustomStyle;
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public bool SetHeightBasedOnChildren;
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public bool CanAutoAnchorsAttach = true;
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private Rectangle area;
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public Rectangle Area {
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@ -158,45 +159,27 @@ namespace MLEM.Ui.Elements {
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this.SetAreaDirty();
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}
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public T AddChild<T>(T element, int index = -1, bool propagateInfo = true) where T : Element {
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public T AddChild<T>(T element, int index = -1) where T : Element {
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if (index < 0 || index > this.Children.Count)
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index = this.Children.Count;
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this.Children.Insert(index, element);
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if (propagateInfo) {
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element.Parent = this;
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element.PropagateRoot(this.Root);
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element.PropagateUiSystem(this.System);
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}
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element.Parent = this;
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element.PropagateRoot(this.Root);
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element.PropagateUiSystem(this.System);
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this.SetSortedChildrenDirty();
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this.SetAreaDirty();
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return element;
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}
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public void RemoveChild(Element element, bool propagateInfo = true) {
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public void RemoveChild(Element element) {
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this.Children.Remove(element);
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if (propagateInfo) {
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element.Parent = null;
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element.PropagateRoot(null);
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element.PropagateUiSystem(null);
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}
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element.Parent = null;
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element.PropagateRoot(null);
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element.PropagateUiSystem(null);
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this.SetSortedChildrenDirty();
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this.SetAreaDirty();
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}
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public void MoveToFront() {
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if (this.Parent != null) {
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this.Parent.RemoveChild(this, false);
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this.Parent.AddChild(this, -1, false);
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}
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}
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public void MoveToBack() {
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if (this.Parent != null) {
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this.Parent.RemoveChild(this, false);
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this.Parent.AddChild(this, 0, false);
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}
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}
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public void SetAreaDirty() {
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this.areaDirty = true;
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if (this.Anchor >= Anchor.AutoLeft && this.Parent != null)
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@ -279,7 +262,7 @@ namespace MLEM.Ui.Elements {
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}
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if (this.Anchor >= Anchor.AutoLeft) {
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var previousChild = this.GetPreviousChild(false);
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var previousChild = this.GetPreviousChild(false, false);
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if (previousChild != null) {
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var prevArea = previousChild.GetAreaForAutoAnchors();
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switch (this.Anchor) {
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@ -335,7 +318,7 @@ namespace MLEM.Ui.Elements {
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return this.Area;
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}
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public Element GetPreviousChild(bool hiddenAlso) {
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public Element GetPreviousChild(bool hiddenAlso, bool unattachableAlso) {
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if (this.Parent == null)
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return null;
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@ -343,6 +326,8 @@ namespace MLEM.Ui.Elements {
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foreach (var child in this.Parent.Children) {
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if (!hiddenAlso && child.IsHidden)
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continue;
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if (!unattachableAlso && !child.CanAutoAnchorsAttach)
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continue;
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if (child == this)
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break;
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lastChild = child;
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@ -25,14 +25,16 @@ namespace MLEM.Ui.Elements {
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this.ScrollBar = new ScrollBar(Anchor.TopRight, new Vector2(scrollSize.X, 1), scrollSize.Y, 0) {
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StepPerScroll = 10,
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OnValueChanged = (element, value) => {
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var firstChild = this.Children[0];
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// if the first child is the scrollbar, there are no other children
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if (firstChild == element)
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// if there is only one child, then we have just the scroll bar
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if (this.Children.Count == 1)
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return;
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// the "real" first child is the scroll bar, which we want to ignore
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var firstChild = this.Children[1];
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// as all children have to be auto-aligned, moving the first one up will move all others
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firstChild.PositionOffset = new Vector2(firstChild.PositionOffset.X, -value.Ceil());
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this.ForceUpdateArea();
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}
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},
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CanAutoAnchorsAttach = false
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};
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this.AddChild(this.ScrollBar);
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@ -53,19 +55,17 @@ namespace MLEM.Ui.Elements {
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if (child is Panel panel && panel.scrollOverflow)
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throw new NotSupportedException($"A panel that scrolls overflow cannot contain another panel that scrolls overflow ({child})");
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}
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// move the scrollbar to the front so it isn't used for auto-aligning
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this.ScrollBar.MoveToFront();
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}
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base.ForceUpdateArea();
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if (this.scrollOverflow) {
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var firstChild = this.Children[0];
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// if the first child is the scrollbar, then we know there's no other children
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if (firstChild == this.ScrollBar)
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// if there is only one child, then we have just the scroll bar
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if (this.Children.Count == 1)
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return;
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var lastChild = this.Children[this.Children.Count - 2];
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// the "real" first child is the scroll bar, which we want to ignore
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var firstChild = this.Children[1];
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var lastChild = this.Children[this.Children.Count - 1];
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// the max value of the scrollbar is the amount of non-scaled pixels taken up by overflowing components
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var childrenHeight = lastChild.Area.Bottom - firstChild.Area.Top;
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this.ScrollBar.MaxValue = (childrenHeight - this.Area.Height) / this.Scale + this.ChildPadding.Y * 2;
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@ -85,14 +85,14 @@ namespace MLEM.Ui.Elements {
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// if we handle overflow, draw using the render target in DrawUnbound
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if (!this.scrollOverflow) {
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base.Draw(time, batch, alpha, offset);
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} else {
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} else if (this.renderTarget != null) {
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// draw the actual render target (don't apply the alpha here because it's already drawn onto with alpha)
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batch.Draw(this.renderTarget, this.GetRenderTargetArea().OffsetCopy(offset), Color.White);
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}
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}
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public override void DrawEarly(GameTime time, SpriteBatch batch, float alpha, BlendState blendState = null, SamplerState samplerState = null) {
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if (this.scrollOverflow) {
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if (this.scrollOverflow && this.renderTarget != null) {
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// draw children onto the render target
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batch.GraphicsDevice.SetRenderTarget(this.renderTarget);
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batch.GraphicsDevice.Clear(Color.Transparent);
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@ -118,22 +118,29 @@ namespace MLEM.Ui {
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}
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}
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public RootElement Add(string name, Element root) {
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if (this.IndexOf(name) >= 0)
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throw new ArgumentException($"There is already a root element with name {name}");
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public RootElement Add(string name, Element element) {
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var root = new RootElement(name, element, this);
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this.Add(root);
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return root;
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}
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var rootInst = new RootElement(name, root, this);
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this.rootElements.Add(rootInst);
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root.PropagateRoot(rootInst);
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root.PropagateUiSystem(this);
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return rootInst;
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internal void Add(RootElement root, int index = -1) {
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if (this.IndexOf(root.Name) >= 0)
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throw new ArgumentException($"There is already a root element with name {root.Name}");
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if (index < 0 || index > this.rootElements.Count)
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index = this.rootElements.Count;
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this.rootElements.Insert(index, root);
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root.Element.PropagateRoot(root);
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root.Element.PropagateUiSystem(this);
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}
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public void Remove(string name) {
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var index = this.IndexOf(name);
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if (index < 0)
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var root = this.Get(name);
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if (root == null)
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return;
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this.rootElements.RemoveAt(index);
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this.rootElements.Remove(root);
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root.Element.PropagateRoot(null);
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root.Element.PropagateUiSystem(null);
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}
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public RootElement Get(string name) {
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@ -179,5 +186,15 @@ namespace MLEM.Ui {
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this.System = system;
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}
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public void MoveToFront() {
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this.System.Remove(this.Name);
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this.System.Add(this);
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}
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public void MoveToBack() {
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this.System.Remove(this.Name);
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this.System.Add(this, 0);
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}
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}
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}
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