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Calculate optimal font size for StepLabel #457 (#460)

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Christian Schulz 2025-05-21 07:40:19 +02:00 • committed by GitHub
parent ff260bae52
commit cc063b6426
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1 changed files with 14 additions and 3 deletions
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17
src/Greenshot.Editor/Drawing/StepLabelContainer.cs
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@ -24,6 +24,7 @@ using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Text;
using System.Runtime.Serialization;
using System.Windows.Forms;
using Dapplo.Windows.Common.Extensions;
using Dapplo.Windows.Common.Structs;
using Greenshot.Base.Interfaces;
@ -187,6 +188,8 @@ namespace Greenshot.Editor.Drawing
/// <param name="rm"></param>
public override void Draw(Graphics graphics, RenderMode rm)
{
if (Width == 0 || Height == 0) { return; }
graphics.SmoothingMode = SmoothingMode.HighQuality;
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphics.CompositingQuality = CompositingQuality.HighQuality;
@ -205,9 +208,17 @@ namespace Greenshot.Editor.Drawing
EllipseContainer.DrawEllipse(rect, graphics, rm, 0, Color.Transparent, fillColor, false);
}
float fontSize = Math.Min(Math.Abs(Width), Math.Abs(Height)) / 3f;
using FontFamily fam = new FontFamily(FontFamily.GenericSansSerif.Name);
using Font font = new Font(fam, fontSize, FontStyle.Bold, GraphicsUnit.Pixel);
using FontFamily fam = new(FontFamily.GenericSansSerif.Name);
//calculate new font size based on ratio from text height and text width
float initialFontSize = Math.Min(Math.Abs(Width), Math.Abs(Height));
using Font Measurefont = new(fam, initialFontSize, FontStyle.Bold, GraphicsUnit.Pixel);
var fontSize = initialFontSize * TextRenderer.MeasureText(text, Measurefont).Height / TextRenderer.MeasureText(text, Measurefont).Width;
//static scale for optimal fit
fontSize *= 0.7f;
using Font font = new(fam, fontSize, FontStyle.Bold, GraphicsUnit.Pixel);
TextContainer.DrawText(graphics, rect, 0, lineColor, false, _stringFormat, text, font);
}