(61d00a474) v0.9.7.1
This commit is contained in:
Regalis
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using Microsoft.Xna.Framework;
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using Microsoft.Xna.Framework.Graphics;
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using System;
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using System.Text;
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using System.Xml.Linq;
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namespace Barotrauma.Items.Components
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{
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partial class ItemLabel : ItemComponent, IDrawableComponent
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{
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private GUITextBlock textBlock;
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private Color textColor;
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private float scrollAmount;
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private string scrollingText;
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private float scrollPadding;
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private int scrollIndex;
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private bool needsScrolling;
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private float[] charWidths;
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[Serialize("0,0,0,0", true, description: "The amount of padding around the text in pixels (left,top,right,bottom). ")]
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public Vector4 Padding
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{
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get { return TextBlock.Padding; }
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set { TextBlock.Padding = value; }
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}
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private string text;
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[Serialize("", true, translationTextTag: "Label.", description: "The text displayed in the label."), Editable(100)]
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public string Text
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{
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get { return text; }
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set
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{
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if (value == text || item.Rect.Width < 5) return;
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if (TextBlock.Rect.Width != item.Rect.Width || textBlock.Rect.Height != item.Rect.Height)
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{
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textBlock = null;
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}
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text = value;
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DisplayText = TextManager.Get(text, returnNull: true) ?? value;
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TextBlock.Text = DisplayText;
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if (Screen.Selected == GameMain.SubEditorScreen && Scrollable)
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{
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TextBlock.Text = ToolBox.LimitString(DisplayText, textBlock.Font, item.Rect.Width);
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}
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SetScrollingText();
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}
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}
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public string DisplayText
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{
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get;
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private set;
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}
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[Editable, Serialize("0,0,0,255", true, description: "The color of the text displayed on the label (R,G,B,A).")]
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public Color TextColor
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{
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get { return textColor; }
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set
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{
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if (textBlock != null) textBlock.TextColor = value;
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textColor = value;
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}
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}
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[Editable(0.0f, 10.0f), Serialize(1.0f, true, description: "The scale of the text displayed on the label.")]
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public float TextScale
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{
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get { return textBlock == null ? 1.0f : textBlock.TextScale; }
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set
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{
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if (textBlock != null) textBlock.TextScale = MathHelper.Clamp(value, 0.1f, 10.0f);
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}
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}
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private bool scrollable;
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[Serialize(false, true, description: "Should the text scroll horizontally across the item if it's too long to be displayed all at once.")]
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public bool Scrollable
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{
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get { return scrollable; }
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set
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{
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scrollable = value;
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IsActive = value;
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TextBlock.Wrap = !scrollable;
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TextBlock.TextAlignment = scrollable ? Alignment.CenterLeft : Alignment.Center;
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}
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}
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[Serialize(20.0f, true, description: "How fast the text scrolls across the item (only valid if Scrollable is set to true).")]
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public float ScrollSpeed
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{
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get;
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set;
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}
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private GUITextBlock TextBlock
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{
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get
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{
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if (textBlock == null)
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{
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textBlock = new GUITextBlock(new RectTransform(item.Rect.Size), "",
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textColor: textColor, font: GUI.UnscaledSmallFont, textAlignment: Alignment.Center, wrap: true, style: null)
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{
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TextDepth = item.SpriteDepth - 0.00001f,
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RoundToNearestPixel = false,
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TextScale = TextScale
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};
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}
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return textBlock;
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}
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}
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public ItemLabel(Item item, XElement element)
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: base(item, element)
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{
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}
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private void SetScrollingText()
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{
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if (!scrollable) return;
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float totalWidth = textBlock.Font.MeasureString(DisplayText).X;
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float textAreaWidth = Math.Max(textBlock.Rect.Width - textBlock.Padding.X - textBlock.Padding.Z, 0);
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if (totalWidth >= textAreaWidth)
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{
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//add enough spaces to fill the rect
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//(so the text can scroll entirely out of view before we reset it back to start)
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needsScrolling = true;
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float spaceWidth = textBlock.Font.MeasureChar(' ').X;
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scrollingText = new string(' ', (int)Math.Ceiling(textAreaWidth / spaceWidth)) + DisplayText;
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}
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else
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{
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//whole text can fit in the textblock, no need to scroll
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needsScrolling = false;
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scrollingText = DisplayText;
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scrollAmount = 0.0f;
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scrollIndex = 0;
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return;
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}
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//calculate character widths
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scrollPadding = 0;
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charWidths = new float[scrollingText.Length];
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for (int i = 0; i < scrollingText.Length; i++)
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{
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float charWidth = TextBlock.Font.MeasureChar(scrollingText[i]).X;
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scrollPadding = Math.Max(charWidth, scrollPadding);
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charWidths[i] = charWidth;
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}
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scrollIndex = MathHelper.Clamp(scrollIndex, 0, DisplayText.Length);
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}
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public override void Update(float deltaTime, Camera cam)
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{
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if (!scrollable) return;
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if (scrollingText == null)
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{
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SetScrollingText();
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}
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if (!needsScrolling) return;
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scrollAmount -= deltaTime * ScrollSpeed;
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float currLength = 0;
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StringBuilder sb = new StringBuilder();
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float textAreaWidth = textBlock.Rect.Width - textBlock.Padding.X - textBlock.Padding.Z;
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for (int i = scrollIndex; i < scrollingText.Length; i++)
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{
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//first character is out of view -> skip to next character
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if (i == scrollIndex && scrollAmount < -charWidths[i])
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{
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scrollIndex++;
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scrollAmount = 0;
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if (scrollIndex >= scrollingText.Length) //reached the last character, reset
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{
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scrollIndex = 0;
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break;
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}
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continue;
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}
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//reached the right edge, stop adding more character
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if (scrollAmount + (currLength + charWidths[i] + scrollPadding) >= textAreaWidth)
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{
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break;
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}
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else
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{
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currLength += charWidths[i];
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sb.Append(scrollingText[i]);
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}
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}
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TextBlock.Text = sb.ToString();
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}
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public void Draw(SpriteBatch spriteBatch, bool editing = false, float itemDepth = -1)
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{
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var drawPos = new Vector2(
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item.DrawPosition.X - item.Rect.Width / 2.0f,
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-(item.DrawPosition.Y + item.Rect.Height / 2.0f));
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Rectangle worldRect = item.WorldRect;
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if (worldRect.X > Screen.Selected.Cam.WorldView.Right ||
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worldRect.Right < Screen.Selected.Cam.WorldView.X ||
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worldRect.Y < Screen.Selected.Cam.WorldView.Y - Screen.Selected.Cam.WorldView.Height ||
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worldRect.Y - worldRect.Height > Screen.Selected.Cam.WorldView.Y)
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{
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return;
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}
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textBlock.TextDepth = item.SpriteDepth - 0.0001f;
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textBlock.TextOffset = drawPos - textBlock.Rect.Location.ToVector2() + new Vector2(scrollAmount + scrollPadding, 0.0f);
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textBlock.DrawManually(spriteBatch);
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}
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}
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}
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