3rdpartylibs/fastreports.wpf/FastReport.DesignExt/TextObject.PreviewExt.cs

using System.Windows.Forms;
using System.Drawing;
using FastReport.Utils;
using System;

namespace FastReport
{
    partial class TextObject
    {
        #region ISearchable Members

        /// <inheritdoc/>
        public override void DrawSearchHighlight(FRPaintEventArgs e, CharacterRange range)
        {
            if (Angle == 0 && FontWidthRatio == 1 && HorzAlign != HorzAlign.Justify)
            {
                IGraphics g = e.Graphics;
                Font font = e.Cache.GetFont(Font.FontFamily, Font.Size * e.ScaleX * 96f / DrawUtils.ScreenDpi, Font.Style);
                StringFormat format = GetStringFormat(e.Cache, 0);

                RectangleF textRect = new RectangleF(
                  (AbsLeft + Padding.Left) * e.ScaleX,
                  (AbsTop + Padding.Top) * e.ScaleY,
                  (Width - Padding.Horizontal) * e.ScaleX,
                  (Height - Padding.Vertical) * e.ScaleY);

                RectangleF rangeRect;
                if (Angle == 0 && FontWidthRatio == 1 && HorzAlign != HorzAlign.Justify)
                {
                    format.SetMeasurableCharacterRanges(new CharacterRange[] { range });
                    Region[] regions = g.MeasureCharacterRanges(Text, font, textRect, format);
                    rangeRect = regions[0].GetBounds(g.Graphics);
                    regions[0].Dispose();
                    regions[0] = null;
                }
                else
                    rangeRect = new RectangleF(AbsLeft * e.ScaleX, AbsTop * e.ScaleY, Width * e.ScaleX, Height * e.ScaleY);

                using (Brush brush = new SolidBrush(Color.FromArgb(128, SystemColors.Highlight)))
                {
                    g.FillRectangle(brush, rangeRect);
                }
            }
            else
                base.DrawSearchHighlight(e, range);
        }


        #endregion
    }
}