/// <summary>
/// A drop down menu implementation. Very quick if you are selecting from a range of enums.
/// </summary>
/// <param name="relativePosition"></param>
/// <param name="componentSize"></param>
/// <param name="listHeaders"></param>
/// <param name="listValues"></param>
public MenuListBox(Vector2i componentSize, string[] listHeaders, int[] listValues, SelectionMethod applySelection, Font font, uint charSize, int lineSpacing, int initialValue)
{
Initialize(componentSize);
this.listHeaders = listHeaders;
this.listValues = listValues;
this.applySelection = applySelection;
this.lineSpacing = lineSpacing;
texts = new MenuText[listHeaders.Length];
selectedText = new MenuText(this.size, font, "", charSize, 0.6f);
selectedText.SetRelativePosition(new Vector2i(0, -2));
selectedValue = initialValue;
selectedText.SetText(listHeaders[initialValue]);
selectedText.SetTextPosition("left", "center");
for (int i = 0; i < listHeaders.Length; i++)
{
texts[i] = new MenuText(this.size, font, listHeaders[i], charSize, 0.6f);
AttachComponent(texts[i]);
texts[i].SetText(listHeaders[i]);
texts[i].SetTextPosition("left", "center");
texts[i].SetRelativePosition(new Vector2i(0, (i + 1) * (lineSpacing + 1) - 2));
attachedComponents.Clear();
}
dropdownBox = new BoundingBox(new Vector2f(size.X, lineSpacing));
collisionBox = new BoundingBox(size + new Vector2i(size.Y, 0));
listboxState = ListBoxState.Normal;
dropdownMainBox = CreateMenuGraphicArrayWithBorder(new FloatRect(96, 0, 96, 96), 10);
dropdownArrow = CreateMenuGraphic(new FloatRect(416, 0, 96, 96), new Vector2i(size.Y, size.Y));
}
public override void HandleInput(InputManager input)
{
base.HandleInput(input);
//Computing absolute position to check collision
Vector2f mousePos;
bool mouse = input.GetMousePosition(out mousePos);
Vector2i origin = new Vector2i(0, 0);
MenuComponent bubble = parent;
while (bubble != null)
{
origin += bubble.position;
bubble = bubble.parent;
}
Vector2f pos = new Vector2f((position + origin).X, (origin + position).Y);
bool collided = BoundingBox.CheckPointMenuCollision(mousePos.X, mousePos.Y, collisionBox, pos);
if (listboxState == ListBoxState.Normal && collided && input.GetMouseClicked(InputBindings.primary, true))
{
listboxState = ListBoxState.Focused;
parent.PushComponentToFront(this);
hoveredValue = selectedValue;
}
else if (listboxState == ListBoxState.Focused)
{
for (int i = 0; i < listHeaders.Length; i++)
{
//check collision for each list header
if (BoundingBox.CheckPointMenuCollision(mousePos.X, mousePos.Y, dropdownBox, pos + new Vector2f(0, lineSpacing * (i + 1))))
{
hoveredValue = i;
collided = true;
}
}
if (input.GetMouseClickedIgnoreConsume(InputBindings.primary))
{
//don't process a click if it was on the listbox
if (collided)
{
input.GetMouseClicked(InputBindings.primary, true);
}
selectedValue = hoveredValue;
applySelection?.Invoke(tag, listValues[selectedValue]);
selectedText.SetText(listHeaders[selectedValue]);
listboxState = ListBoxState.Normal;
}
}
}
