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tabbing, part 2

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Ellpeck 2019-08-28 18:58:05 +02:00
parent 5c741a98e9
commit 90d292cd37
4 changed files with 49 additions and 33 deletions
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39
MLEM.Ui/Elements/Element.cs
View file

@ -84,16 +84,17 @@ namespace MLEM.Ui.Elements {
public GenericCallback OnSecondaryPressed;
public GenericCallback OnSelected;
public GenericCallback OnDeselected;
public GenericCallback OnMouseEnter;
public GenericCallback OnMouseExit;
public TextInputCallback OnTextInput;
public GenericCallback OnAreaUpdated;
public OtherElementCallback OnMousedElementChanged;
public OtherElementCallback OnSelectedElementChanged;
private UiSystem system;
public UiSystem System {
get => this.system;
private set {
internal set {
this.system = value;
if (this.system != null && !this.HasCustomStyle)
this.InitStyle(this.system.Style);
@ -102,7 +103,7 @@ namespace MLEM.Ui.Elements {
protected UiControls Controls => this.System.Controls;
protected InputHandler Input => this.Controls.Input;
public Point MousePos => this.Input.MousePosition;
public RootElement Root { get; private set; }
public RootElement Root { get; internal set; }
public float Scale => this.Root.ActualScale;
public Element Parent { get; private set; }
public bool IsMouseOver { get; private set; }
@ -174,8 +175,10 @@ namespace MLEM.Ui.Elements {
index = this.Children.Count;
this.Children.Insert(index, element);
element.Parent = this;
element.PropagateRoot(this.Root);
element.PropagateUiSystem(this.System);
element.Propagate(e => {
e.Root = this.Root;
e.System = this.System;
});
this.SetSortedChildrenDirty();
this.SetAreaDirty();
return element;
@ -184,8 +187,10 @@ namespace MLEM.Ui.Elements {
public void RemoveChild(Element element) {
this.Children.Remove(element);
element.Parent = null;
element.PropagateRoot(null);
element.PropagateUiSystem(null);
element.Propagate(e => {
e.Root = null;
e.System = null;
});
this.SetSortedChildrenDirty();
this.SetAreaDirty();
}
@ -426,7 +431,7 @@ namespace MLEM.Ui.Elements {
child.Draw(time, batch, alpha * child.DrawAlpha, offset);
}
if (this.IsSelected && this.Controls.ShowSelectionIndicator && this.SelectionIndicator != null) {
if (this.IsSelected && !this.Controls.SelectedLastElementWithMouse && this.SelectionIndicator != null) {
batch.Draw(this.SelectionIndicator, this.DisplayArea.OffsetCopy(offset), Color.White * alpha);
}
}
@ -457,22 +462,12 @@ namespace MLEM.Ui.Elements {
public delegate void GenericCallback(Element element);
internal void PropagateUiSystem(UiSystem system) {
this.System = system;
foreach (var child in this.Children)
child.PropagateUiSystem(system);
}
public delegate void OtherElementCallback(Element thisElement, Element otherElement);
internal void PropagateRoot(RootElement root) {
this.Root = root;
internal void Propagate(Action<Element> action) {
action(this);
foreach (var child in this.Children)
child.PropagateRoot(root);
}
internal void PropagateInput(Keys key, char character) {
this.OnTextInput?.Invoke(this, key, character);
foreach (var child in this.Children)
child.PropagateInput(key, character);
child.Propagate(action);
}
}

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

@ -1,5 +1,6 @@
using System;
using System.Diagnostics;
using System.Linq;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using MLEM.Extensions;
@ -33,6 +34,15 @@ namespace MLEM.Ui.Elements {
// modify the padding so that the scroll bar isn't over top of something else
this.ScrollBar.PositionOffset -= new Vector2(scrollSize.X + 1, 0);
this.ChildPadding += new Point(scrollSize.X, 0);
// handle automatic element selection, the scroller needs to scroll to the right location
this.OnSelectedElementChanged += (element, otherElement) => {
if (this.Controls.SelectedLastElementWithMouse)
return;
if (otherElement == null || !otherElement.GetParentTree().Contains(this))
return;
this.ScrollBar.CurrentValue = (otherElement.Area.Bottom - this.Children[1].Area.Top - this.Area.Height / 2) / this.Scale;
};
}
}

12
MLEM.Ui/UiControls.cs
View file

@ -14,7 +14,7 @@ namespace MLEM.Ui {
public Element MousedElement { get; private set; }
public Element SelectedElement { get; private set; }
public bool ShowSelectionIndicator;
public bool SelectedLastElementWithMouse { get; private set; }
public UiControls(UiSystem system, InputHandler inputHandler = null) {
this.system = system;
@ -34,13 +34,14 @@ namespace MLEM.Ui {
if (mousedNow != null)
mousedNow.OnMouseEnter?.Invoke(mousedNow);
this.MousedElement = mousedNow;
this.system.Propagate(e => e.OnMousedElementChanged?.Invoke(e, mousedNow));
}
if (this.Input.IsMouseButtonPressed(MouseButton.Left)) {
// select element
var selectedNow = mousedNow != null && mousedNow.CanBeSelected ? mousedNow : null;
if (this.SelectedElement != selectedNow)
this.SelectElement(selectedNow, false);
this.SelectElement(selectedNow, true);
// first action on element
if (mousedNow != null)
@ -61,17 +62,18 @@ namespace MLEM.Ui {
}
} else if (this.Input.IsKeyPressed(Keys.Tab)) {
// tab or shift-tab to next or previous element
this.SelectElement(this.GetNextElement(this.Input.IsModifierKeyDown(ModifierKey.Shift)), true);
this.SelectElement(this.GetNextElement(this.Input.IsModifierKeyDown(ModifierKey.Shift)), false);
}
}
public void SelectElement(Element element, bool show) {
public void SelectElement(Element element, bool mouse) {
if (this.SelectedElement != null)
this.SelectedElement.OnDeselected?.Invoke(this.SelectedElement);
if (element != null)
element.OnSelected?.Invoke(element);
this.SelectedElement = element;
this.ShowSelectionIndicator = show;
this.SelectedLastElementWithMouse = mouse;
this.system.Propagate(e => e.OnSelectedElementChanged?.Invoke(e, element));
}
public Element GetMousedElement() {

21
MLEM.Ui/UiSystem.cs
View file

@ -38,7 +38,7 @@ namespace MLEM.Ui {
set {
this.style = value;
foreach (var root in this.rootElements) {
root.Element.PropagateUiSystem(this);
root.Element.Propagate(e => e.System = this);
root.Element.SetAreaDirty();
}
}
@ -62,7 +62,7 @@ namespace MLEM.Ui {
};
window.TextInput += (sender, args) => {
foreach (var root in this.rootElements)
root.Element.PropagateInput(args.Key, args.Character);
root.Element.Propagate(e => e.OnTextInput?.Invoke(e, args.Key, args.Character));
};
}
@ -101,8 +101,10 @@ namespace MLEM.Ui {
if (index < 0 || index > this.rootElements.Count)
index = this.rootElements.Count;
this.rootElements.Insert(index, root);
root.Element.PropagateRoot(root);
root.Element.PropagateUiSystem(this);
root.Element.Propagate(e => {
e.Root = root;
e.System = this;
});
return true;
}
@ -111,8 +113,10 @@ namespace MLEM.Ui {
if (root == null)
return;
this.rootElements.Remove(root);
root.Element.PropagateRoot(null);
root.Element.PropagateUiSystem(null);
root.Element.Propagate(e => {
e.Root = null;
e.System = null;
});
}
public RootElement Get(string name) {
@ -129,6 +133,11 @@ namespace MLEM.Ui {
yield return this.rootElements[i];
}
internal void Propagate(Action<Element> action) {
foreach (var root in this.rootElements)
root.Element.Propagate(action);
}
}
public class RootElement {