private Point GetParagraphAndRunCoordinates(Win32DCSafeHandle hdc, TextBoxContext location, bool moveCaretToNextLine, out int lineYOffset, out int lineHeight, out TextRun textRun, out int textRunCharacterIndex, out bool isFirstLine, out bool isLastLine) { int num = 0; int textRunIndex = location.TextRunIndex; textRunCharacterIndex = location.TextRunCharacterIndex; lineYOffset = 0; lineHeight = 0; textRun = null; isFirstLine = true; isLastLine = true; List <Paragraph> rTParagraphs = this.RTParagraphs; if (rTParagraphs != null && location.ParagraphIndex < rTParagraphs.Count) { Paragraph paragraph = rTParagraphs[location.ParagraphIndex]; int num2 = paragraph.OffsetY + TextBox.ConvertToPixels(paragraph.ParagraphProps.SpaceBefore, this.Dpi); int num3 = TextBox.ConvertToPixels(paragraph.ParagraphProps.LeftIndent, this.Dpi); int num4 = TextBox.ConvertToPixels(paragraph.ParagraphProps.RightIndent, this.Dpi); int num5 = TextBox.ConvertToPixels(paragraph.ParagraphProps.HangingIndent, this.Dpi); bool flag = this.m_rttextbox.TextBoxProps.Direction == RPLFormat.Directions.LTR; if (num5 < 0) { if (flag) { num3 -= num5; } else { num4 -= num5; } } int listLevel = paragraph.ParagraphProps.ListLevel; if (listLevel > 0) { int num6 = listLevel * TextBox.ConvertToPixels(10.583333f, this.Dpi); if (flag) { num3 += num6; } else { num4 += num6; } } for (int i = 0; i < paragraph.TextLines.Count; i++) { TextLine textLine = paragraph.TextLines[i]; int descent = textLine.GetDescent(hdc, this.FontCache); lineHeight = textLine.GetHeight(hdc, this.FontCache); lineYOffset = num2; num2 += lineHeight; RPLFormat.TextAlignments textAlignments = paragraph.ParagraphProps.Alignment; if (textAlignments == RPLFormat.TextAlignments.General) { textAlignments = this.m_rttextbox.TextBoxProps.DefaultAlignment; if (!flag) { switch (textAlignments) { case RPLFormat.TextAlignments.Left: textAlignments = RPLFormat.TextAlignments.Right; break; case RPLFormat.TextAlignments.Right: textAlignments = RPLFormat.TextAlignments.Left; break; } } } switch (textAlignments) { case RPLFormat.TextAlignments.Center: num = num3 + (this.WidthInPX - num3 - num4) / 2 - textLine.GetWidth(hdc, this.FontCache) / 2; break; case RPLFormat.TextAlignments.Right: num = this.WidthInPX - textLine.GetWidth(hdc, this.FontCache) - num4; break; default: num = num3; break; } if (textLine.FirstLine && num5 != 0) { if (flag) { switch (textAlignments) { case RPLFormat.TextAlignments.Left: num += num5; break; case RPLFormat.TextAlignments.Center: num += num5 / 2; break; } } else { switch (textAlignments) { case RPLFormat.TextAlignments.Right: num -= num5; break; case RPLFormat.TextAlignments.Center: num -= num5 / 2; break; } } } int count = textLine.VisualRuns.Count; for (int j = 0; j < count; num += textRun.GetWidth(hdc, this.FontCache), j++) { textRun = textLine.VisualRuns[j]; if (textRun.TextRunProperties.IndexInParagraph == textRunIndex && textRunCharacterIndex >= textRun.CharacterIndexInOriginal) { bool flag2 = (moveCaretToNextLine || textRun.CharacterCount <= 0 || textRun.Text[textRun.CharacterCount - 1] != '\n') ? (textRunCharacterIndex <= textRun.CharacterIndexInOriginal + textRun.CharacterCount) : (textRunCharacterIndex < textRun.CharacterIndexInOriginal + textRun.CharacterCount); if (!flag2 && (i + 1 != paragraph.TextLines.Count || j + 1 != count)) { continue; } if (moveCaretToNextLine && textRunCharacterIndex == textRun.CharacterIndexInOriginal + textRun.CharacterCount && j + 1 == count && i + 1 < paragraph.TextLines.Count) { location = location.Clone(); if (paragraph.TextLines[i + 1].VisualRuns[0].TextRunProperties.IndexInParagraph != textRunIndex) { location.TextRunIndex++; location.TextRunCharacterIndex = 0; } Point paragraphAndRunCoordinates = this.GetParagraphAndRunCoordinates(hdc, location, false, out lineYOffset, out lineHeight, out textRun, out textRunCharacterIndex, out isFirstLine, out isLastLine); textRunCharacterIndex = Math.Max(textRunCharacterIndex - 1, 0); return(paragraphAndRunCoordinates); } textRunCharacterIndex -= textRun.CharacterIndexInOriginal; isFirstLine = textLine.FirstLine; isLastLine = textLine.LastLine; return(new Point(num, num2 - descent)); } } } textRun = null; return(Point.Empty); } return(Point.Empty); }
private static void RenderParagraph(TextBox textBox, Paragraph paragraph, Win32DCSafeHandle hdc, FontCache fontCache, int offsetX, ref int offsetY, Rectangle layoutRectangle, float dpiX) { List <TextLine> textLines = paragraph.TextLines; IParagraphProps paragraphProps = paragraph.ParagraphProps; bool flag = textBox.TextBoxProps.Direction == RPLFormat.Directions.LTR; RPLFormat.TextAlignments textAlignments = paragraphProps.Alignment; if (textAlignments == RPLFormat.TextAlignments.General) { textAlignments = textBox.TextBoxProps.DefaultAlignment; if (!flag) { switch (textAlignments) { case RPLFormat.TextAlignments.Right: textAlignments = RPLFormat.TextAlignments.Left; break; case RPLFormat.TextAlignments.Left: textAlignments = RPLFormat.TextAlignments.Right; break; } } } int num = TextBox.ConvertToPixels(paragraphProps.LeftIndent, dpiX); int num2 = TextBox.ConvertToPixels(paragraphProps.RightIndent, dpiX); int num3 = TextBox.ConvertToPixels(paragraphProps.HangingIndent, dpiX); if (num3 < 0) { if (flag) { num -= num3; } else { num2 -= num3; } } if (paragraphProps.ListLevel > 0) { int num4 = paragraphProps.ListLevel * TextBox.ConvertToPixels(10.583333f, dpiX); if (flag) { num += num4; } else { num2 += num4; } } if (textLines == null || textLines.Count == 0) { offsetY += TextBox.ConvertToPixels(paragraphProps.SpaceBefore, dpiX); offsetY += TextBox.ConvertToPixels(paragraphProps.SpaceAfter, dpiX); } else { Graphics graphics = null; try { for (int i = 0; i < textLines.Count; i++) { TextLine textLine = textLines[i]; int ascent = textLine.GetAscent(hdc, fontCache); textLine.GetDescent(hdc, fontCache); int height = textLine.GetHeight(hdc, fontCache); if (textLine.FirstLine) { offsetY += TextBox.ConvertToPixels(paragraphProps.SpaceBefore, dpiX); } int baselineY = offsetY + ascent; offsetY += height; int num5; switch (textAlignments) { case RPLFormat.TextAlignments.Left: num5 = num; break; case RPLFormat.TextAlignments.Center: { int num6 = 0; num6 = ((!textBox.HorizontalText) ? layoutRectangle.Height : layoutRectangle.Width); num5 = num + (num6 - num - num2) / 2 - textLine.GetWidth(hdc, fontCache) / 2; break; } default: num5 = ((!textBox.HorizontalText) ? (layoutRectangle.Height - num2 - textLine.GetWidth(hdc, fontCache)) : (layoutRectangle.Width - num2 - textLine.GetWidth(hdc, fontCache))); break; } if (textLine.Prefix != null && textLine.Prefix.Count > 0) { int num7 = (!flag) ? (num5 + textLine.GetWidth(hdc, fontCache) + TextBox.ConvertToPixels(4.233333f, dpiX)) : (num5 - TextBox.ConvertToPixels(4.233333f, dpiX) - textLine.GetPrefixWidth(hdc, fontCache)); if (num3 < 0) { if (flag && textAlignments == RPLFormat.TextAlignments.Left) { num7 += num3; } else if (!flag && textAlignments == RPLFormat.TextAlignments.Right) { num7 -= num3; } } for (int j = 0; j < textLine.Prefix.Count; j++) { TextRun textRun = textLine.Prefix[j]; textBox.TextBoxProps.DrawTextRun(textRun, paragraph, hdc, dpiX, fontCache, num7, offsetY, baselineY, height, layoutRectangle); num7 += textRun.GetWidth(hdc, fontCache); } } if (textLine.FirstLine && num3 != 0) { if (flag) { switch (textAlignments) { case RPLFormat.TextAlignments.Left: num5 += num3; break; case RPLFormat.TextAlignments.Center: num5 += num3 / 2; break; } } else { switch (textAlignments) { case RPLFormat.TextAlignments.Right: num5 -= num3; break; case RPLFormat.TextAlignments.Center: num5 -= num3 / 2; break; } } } int prevRunWidth = 0; int prevRunX = 0; TextRun prevRun = null; int count = textLine.VisualRuns.Count; for (int k = 0; k < count; k++) { TextRun textRun2 = textLine.VisualRuns[k]; int width = textRun2.GetWidth(hdc, fontCache, k == count - 1); if (!textRun2.IsHighlightTextRun) { if (width > 0) { textBox.TextBoxProps.DrawTextRun(textRun2, paragraph, hdc, dpiX, fontCache, num5, offsetY, baselineY, height, layoutRectangle); } } else { bool flag2 = (flag && k + 1 == count) || (!flag && k == 0); if (width > 0 || flag2) { if (graphics == null) { graphics = Graphics.FromHdc(hdc.Handle); } TextBox.RenderHighlightedTextRun(textBox, paragraph, textRun2, prevRun, hdc, graphics, fontCache, dpiX, num5, offsetY, baselineY, height, layoutRectangle, width, prevRunWidth, prevRunX, flag2, textLine.LastLine); } } prevRunX = num5; prevRunWidth = width; num5 += width; prevRun = textRun2; } if (textLine.LastLine) { offsetY += TextBox.ConvertToPixels(paragraphProps.SpaceAfter, dpiX); } } } finally { if (graphics != null) { graphics.Dispose(); graphics = null; } } } }