static void HighlightSearchResults (TextLayout layout, string search, Color foreground, Color background) { string text = null; if (layout != null) { text = layout.Text; layout.ClearAttributes (); } if (string.IsNullOrEmpty (text) || string.IsNullOrEmpty (search)) return; int index = 0; while ((index = text.IndexOf (search, index, StringComparison.OrdinalIgnoreCase)) > -1) { layout.SetForeground (foreground, index, search.Length); layout.SetBackground (background, index, search.Length); index++; } }
public virtual void Texts(Xwt.Drawing.Context ctx, double x, double y) { ctx.Save(); ctx.Translate(x, y); ctx.SetColor(Colors.Black); var col1 = new Rectangle(); var col2 = new Rectangle(); var text = new TextLayout(); text.Font = this.Font.WithSize(24); Console.WriteLine(text.Font.Size); // first text text.Text = "Lorem ipsum dolor sit amet,"; var size1 = text.GetSize(); col1.Width = size1.Width; col1.Height += size1.Height + 10; ctx.DrawTextLayout(text, 0, 0); // proofing width; test should align with text above ctx.SetColor(Colors.DarkMagenta); text.Text = "consetetur sadipscing elitr, sed diam nonumy"; text.Width = col1.Width; var size2 = text.GetSize(); ctx.DrawTextLayout(text, 0, col1.Bottom); col1.Height += size2.Height + 10; ctx.SetColor(Colors.Black); // proofing scale, on second col ctx.Save(); ctx.SetColor(Colors.Red); col2.Left = col1.Right + 10; text.Text = "eirmod tempor invidunt ut."; var scale = 1.2; text.Width = text.Width / scale; var size3 = text.GetSize(); col2.Height = size3.Height * scale; col2.Width = size3.Width * scale + 5; ctx.Scale(scale, scale); ctx.DrawTextLayout(text, col2.Left / scale, col2.Top / scale); ctx.Restore(); // proofing heigth, on second col ctx.Save(); ctx.SetColor(Colors.DarkCyan); text.Text = "Praesent ac lacus nec dolor pulvinar feugiat a id elit."; var size4 = text.GetSize(); text.Height = size4.Height / 2; text.Trimming = TextTrimming.WordElipsis; ctx.DrawTextLayout(text, col2.Left, col2.Bottom + 5); ctx.SetLineWidth(1); ctx.SetColor(Colors.Blue); ctx.Rectangle(new Rectangle(col2.Left, col2.Bottom + 5, text.Width, text.Height)); ctx.Stroke(); ctx.Restore(); // drawing col line ctx.SetLineWidth(1); ctx.SetColor(Colors.Black.WithAlpha(.5)); ctx.MoveTo(col1.Right + 5, col1.Top); ctx.LineTo(col1.Right + 5, col1.Bottom); ctx.Stroke(); ctx.MoveTo(col2.Right + 5, col2.Top); ctx.LineTo(col2.Right + 5, col2.Bottom); ctx.Stroke(); ctx.SetColor(Colors.Black); // proofing rotate, and printing size to see the values ctx.Save(); text.Font = this.Font.WithSize(10); text.Text = string.Format("Size 1 {0}\r\nSize 2 {1}\r\nSize 3 {2} Scale {3}", size1, size2, size3, scale); text.Width = -1; // this clears textsize text.Height = -1; ctx.Rotate(5); // maybe someone knows a formula with angle and textsize to calculyte ty var ty = 30; ctx.DrawTextLayout(text, ty, col1.Bottom + 10); ctx.Restore(); // scale example here: ctx.Restore(); TextLayout tl0 = new TextLayout(this); tl0.Font = this.Font.WithSize(10); tl0.Text = "This text contains attributes."; tl0.SetUnderline(0, "This".Length); tl0.SetForeground(new Color(0, 1.0, 1.0), "This ".Length, "text".Length); tl0.SetBackground(new Color(0, 0, 0), "This ".Length, "text".Length); tl0.SetFontWeight(FontWeight.Bold, "This text ".Length, "contains".Length); tl0.SetFontStyle(FontStyle.Italic, "This text ".Length, "contains".Length); tl0.SetStrikethrough("This text contains ".Length, "attributes".Length); ctx.DrawTextLayout(tl0, col2.Left, col2.Bottom + 100); // Text boces y = 180; // Without wrapping TextLayout tl = new TextLayout(this); tl.Text = "Stright text"; DrawText(ctx, tl, ref y); // With wrapping tl = new TextLayout(this); tl.Text = "The quick brown fox jumps over the lazy dog"; tl.Width = 100; DrawText(ctx, tl, ref y); // With blank lines tl = new TextLayout(this); tl.Text = "\nEmpty line above\nLine break above\n\nEmpty line above\n\n\nTwo empty lines above\nEmpty line below\n"; tl.Width = 200; DrawText(ctx, tl, ref y); }
protected override void OnDraw(Context ctx, Rectangle cellArea) { TextLayout layout = new TextLayout(); var node = GetValue(NodeField); var status = GetViewStatus(node); // Store the width, it will be used for calculating height in OnGetRequiredSize() when in expanded mode. status.LastRenderWidth = cellArea.Width; layout.Text = node.Text; var textSize = layout.GetSize(); // Render the selection if (selectionRow == node && selectionStart != selectionEnd) { layout.SetBackground(Colors.LightBlue, Math.Min(selectionStart, selectionEnd), Math.Abs(selectionEnd - selectionStart)); } // Text doesn't fit. We need to render the expand icon if (textSize.Width > cellArea.Width) { layout.Width = Math.Max(1, cellArea.Width - addImage.Width - MoreLinkSpacing); if (!status.Expanded) { layout.Trimming = TextTrimming.WordElipsis; } else { textSize = layout.GetSize(); // The height may have changed. We need the real height since we check it at the end of the method } // Draw the text ctx.DrawTextLayout(layout, cellArea.X, cellArea.Y); // Draw the image var imageRect = new Rectangle(cellArea.X + layout.Width + MoreLinkSpacing, cellArea.Y, addImage.Width, addImage.Height); bool hover = pointerPosition != Point.Zero && imageRect.Contains(pointerPosition); Image icon; if (status.Expanded) { icon = hover ? removeImage : removeImageDisabled; } else { icon = hover ? addImage : addImageDisabled; } ctx.DrawImage(icon, imageRect.X, imageRect.Y); } else { ctx.DrawTextLayout(layout, cellArea.X, cellArea.Y); } // If the height required by the text is not the same as what was calculated in OnGetRequiredSize(), it means that // the required height has changed. In that case call QueueResize(), so that OnGetRequiredSize() is called // again and the row is properly resized. if (status.Expanded && textSize.Height != status.LastCalculatedHeight) { QueueResize(); } }