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107 lines
No EOL
4.6 KiB
C#
107 lines
No EOL
4.6 KiB
C#
using Microsoft.Xna.Framework;
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using Microsoft.Xna.Framework.Graphics;
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using MLEM.Textures;
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using MLEM.Ui.Style;
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namespace MLEM.Ui.Elements {
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/// <summary>
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/// A button element for use inside of a <see cref="UiSystem"/>.
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/// A button element can be pressed, hovered over and that can be disabled.
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/// </summary>
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public class Button : Element {
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/// <summary>
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/// The button's texture
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/// </summary>
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public StyleProp<NinePatch> Texture;
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/// <summary>
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/// The color that the button draws its texture with
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/// </summary>
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public StyleProp<Color> NormalColor = Color.White;
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/// <summary>
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/// The texture that the button uses while being moused over.
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/// If this is null, it uses its default <see cref="Texture"/>.
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/// </summary>
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public StyleProp<NinePatch> HoveredTexture;
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/// <summary>
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/// The color that the button uses for drawing while being moused over
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/// </summary>
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public StyleProp<Color> HoveredColor;
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/// <summary>
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/// The texture that the button uses when it <see cref="IsDisabled"/>.
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/// If this is null, it uses its default <see cref="Texture"/>.
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/// </summary>
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public StyleProp<NinePatch> DisabledTexture;
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/// <summary>
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/// The color that the button uses for drawing when it <see cref="IsDisabled"/>
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/// </summary>
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public StyleProp<Color> DisabledColor;
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/// <summary>
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/// The <see cref="Paragraph"/> of text that is displayed on the button.
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/// Note that this is only nonnull by default if the constructor was passed a nonnull text.
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/// </summary>
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public Paragraph Text;
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/// <summary>
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/// The <see cref="Tooltip"/> that is displayed when hovering over the button.
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/// Note that this is only nonnull by default if the constructor was passed a nonnull tooltip text.
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/// </summary>
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public Tooltip Tooltip;
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private bool isDisabled;
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/// <summary>
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/// Set this property to true to mark the button as disabled.
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/// A disabled button cannot be moused over, selected or pressed.
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/// </summary>
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public bool IsDisabled {
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get => this.isDisabled;
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set {
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this.isDisabled = value;
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this.CanBePressed = !value;
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this.CanBeSelected = !value;
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}
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}
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/// <summary>
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/// Creates a new button with the given settings
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/// </summary>
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/// <param name="anchor">The button's anchor</param>
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/// <param name="size">The button's size</param>
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/// <param name="text">The text that should be displayed on the button</param>
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/// <param name="tooltipText">The text that should be displayed in a <see cref="Tooltip"/> when hovering over this button</param>
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/// <param name="tooltipWidth">The width of this button's <see cref="Tooltip"/>, or 50 by default</param>
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public Button(Anchor anchor, Vector2 size, string text = null, string tooltipText = null, float tooltipWidth = 50) : base(anchor, size) {
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if (text != null) {
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this.Text = new Paragraph(Anchor.Center, 1, text, true);
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this.AddChild(this.Text);
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}
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if (tooltipText != null)
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this.Tooltip = new Tooltip(tooltipWidth, tooltipText, this);
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}
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/// <inheritdoc />
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public override void Draw(GameTime time, SpriteBatch batch, float alpha, BlendState blendState, SamplerState samplerState, Matrix matrix) {
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var tex = this.Texture;
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var color = (Color) this.NormalColor * alpha;
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if (this.IsDisabled) {
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tex = this.DisabledTexture.OrDefault(tex);
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color = (Color) this.DisabledColor * alpha;
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} else if (this.IsMouseOver) {
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tex = this.HoveredTexture.OrDefault(tex);
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color = (Color) this.HoveredColor * alpha;
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}
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batch.Draw(tex, this.DisplayArea, color, this.Scale);
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base.Draw(time, batch, alpha, blendState, samplerState, matrix);
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}
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/// <inheritdoc />
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protected override void InitStyle(UiStyle style) {
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base.InitStyle(style);
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this.Texture.SetFromStyle(style.ButtonTexture);
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this.HoveredTexture.SetFromStyle(style.ButtonHoveredTexture);
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this.HoveredColor.SetFromStyle(style.ButtonHoveredColor);
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this.DisabledTexture.SetFromStyle(style.ButtonDisabledTexture);
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this.DisabledColor.SetFromStyle(style.ButtonDisabledColor);
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}
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}
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} |