88 lines
2.8 KiB
C#
88 lines
2.8 KiB
C#
using Graphing.Forms;
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using System.Drawing;
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namespace Graphing.Parts;
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public record struct GraphUiText : IGraphPart
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{
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public string text;
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public Float2 position;
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public bool background;
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public ContentAlignment alignment;
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public Int2 offsetPix;
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private readonly Font font;
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private readonly Brush? backgroundBrush;
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public GraphUiText(string text, Float2 position, ContentAlignment alignment,
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bool background = true, Int2? offsetPix = null)
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{
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font = new Font("Segoe UI", 8, FontStyle.Bold);
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this.text = text;
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this.position = position;
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this.background = background;
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this.alignment = alignment;
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this.offsetPix = offsetPix ?? new();
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if (background) backgroundBrush = new SolidBrush(GraphForm.BackgroundColor);
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}
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public readonly void Render(in GraphForm form, in Graphics g, in Pen p)
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{
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Int2 posScreen = form.GraphSpaceToScreenSpace(position);
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SizeF size = g.MeasureString(text, font);
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// Adjust X position based on alignment.
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switch (alignment)
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{
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case ContentAlignment.TopLeft or
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ContentAlignment.MiddleLeft or
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ContentAlignment.BottomLeft: break; // Nothing to offset.
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case ContentAlignment.TopCenter or
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ContentAlignment.MiddleCenter or
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ContentAlignment.BottomCenter:
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posScreen.x -= (int)(size.Width / 2);
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break;
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case ContentAlignment.TopRight or
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ContentAlignment.MiddleRight or
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ContentAlignment.BottomRight:
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posScreen.x -= (int)size.Width;
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break;
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}
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// Adjust Y position based on alignment.
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switch (alignment)
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{
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case ContentAlignment.TopLeft or
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ContentAlignment.TopCenter or
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ContentAlignment.TopRight: break; // Nothing to offset.
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case ContentAlignment.MiddleLeft or
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ContentAlignment.MiddleCenter or
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ContentAlignment.MiddleRight:
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posScreen.y -= (int)(size.Height / 2);
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break;
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case ContentAlignment.BottomLeft or
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ContentAlignment.BottomCenter or
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ContentAlignment.BottomRight:
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posScreen.y -= (int)size.Height;
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break;
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}
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posScreen.x += (int)(offsetPix.x * form.DpiFloat / 192);
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posScreen.y += (int)(offsetPix.y * form.DpiFloat / 192);
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if (background)
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{
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g.FillRectangle(backgroundBrush!, new Rectangle(posScreen.x, posScreen.y,
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(int)size.Width, (int)size.Height));
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}
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g.DrawString(text, font, p.Brush, new Point(posScreen.x, posScreen.y));
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}
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}
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