/// <summary> /// Draws a previously laid-out text at a specified offset. /// </summary> public void Draw(float xOff, float yOff, RenderTextCallback renderCallback, DrawTextHint hint) { if (GetHLines(_totalLines) == null) throw new Exception("Draw invoked on a non-laid-out text."); if (GetHLines(_totalLines).Count == 0) return; bool styled = (_text is StyledText); // Original brush and font System.Drawing.Brush brushOriginal = hint.Brush; Font fontOriginal = hint.Font; // We now have the starting line and the number // of total lines to layout the text in. Go for it int iword = 0; for (int i = _startLine; i < _startLine + _totalLines; i++) { PointList hLine = GetHLines(_totalLines)[i] as PointList; for (int j = 0; j < hLine.Count; j += 2) { PointF pt1 = hLine[j]; PointF pt2 = hLine[j + 1]; RectangleF rc = new RectangleF( _bounds.X + xOff + pt1.X, _bounds.Y + yOff + pt1.Y, pt2.X - pt1.X, pt2.Y - pt1.Y); bool newLine = false; int newword = FitTextInRect(iword, rc, ref newLine); if (newword > iword) { // Calculate the total width of the words // which are about to be rendered, but skip // the whitespaces at the front and the rear int ifront = iword; int irear = newword - 1; while (ifront < newword && _text.Words[ifront].IsWhitespace) ifront++; while (irear >= ifront && _text.Words[irear].IsWhitespace) irear--; int w; float total = 0; for (w = ifront; w <= irear; w++) total += _text.Words[w].Width; // Adjust the left side of the destination // rectangle according to the specified alignment switch (_options.Alignment) { case StringAlignment.Near: // Do nothing break; case StringAlignment.Center: rc.X = rc.X + (rc.Width - total) / 2; break; case StringAlignment.Far: rc.X = rc.Right - total; break; } // Render the words in the range [ifront, irear] for (w = ifront; w <= irear; w++) { Word word = _text.Words[w]; if (!_fits && hint.AddEllipsis && styled) { if (i == _startLine + _totalLines - 1) { if (j == hLine.Count - 2) { if (w == irear) { // Append the last word with ellipsis StyledText.StyledWord sword = word as StyledText.StyledWord; StyledText.StyledWord newWord = null; int chars = sword.Value.Length; float width = sword.Width; do { newWord = new StyledText.StyledWord( sword.Value.Substring(0, chars) + "...", sword.Format, sword.Color); newWord.UpdateMeasures(hint.Graphics, hint.Font); chars--; } while (chars > 0 && newWord.Width > width); word = newWord; } } } } if (!word.IsLineBreak && !word.IsWhitespace) { if (styled) { // In case of styled text formatting, // apply fonts and colors StyledText.StyledWord sword = word as StyledText.StyledWord; hint.Font = sword.CreateFont(hint.Font); hint.Brush = sword.CreateBrush(hint.Brush); rc.Y += sword.YOffset; } // Add 10 to width and height becaus GDI+ stupid // and clips the text renderCallback(word.Value, new RectangleF( rc.X, rc.Y, word.Width + 10, rc.Height + 10), hint); if (styled) { // Restore font and brush StyledText.StyledWord sword = word as StyledText.StyledWord; sword.DisposeFont(hint.Font); sword.DisposeBrush(hint.Brush); hint.Font = fontOriginal; hint.Brush = brushOriginal; rc.Y -= sword.YOffset; } } rc.X += _text.Words[w].Width; } iword = newword; } if (newLine) break; } } }
/// <summary> /// Draws a previously laid-out text at a specified offset. /// </summary> public void Draw(float xOff, float yOff, RenderTextCallback renderCallback, DrawTextHint hint) { if (GetHLines(_totalLines) == null) { throw new Exception("Draw invoked on a non-laid-out text."); } if (GetHLines(_totalLines).Count == 0) { return; } bool styled = (_text is StyledText); // Original brush and font System.Drawing.Brush brushOriginal = hint.Brush; Font fontOriginal = hint.Font; // We now have the starting line and the number // of total lines to layout the text in. Go for it int iword = 0; for (int i = _startLine; i < _startLine + _totalLines; i++) { PointList hLine = GetHLines(_totalLines)[i] as PointList; for (int j = 0; j < hLine.Count; j += 2) { PointF pt1 = hLine[j]; PointF pt2 = hLine[j + 1]; RectangleF rc = new RectangleF( _bounds.X + xOff + pt1.X, _bounds.Y + yOff + pt1.Y, pt2.X - pt1.X, pt2.Y - pt1.Y); bool newLine = false; int newword = FitTextInRect(iword, rc, ref newLine); if (newword > iword) { // Calculate the total width of the words // which are about to be rendered, but skip // the whitespaces at the front and the rear int ifront = iword; int irear = newword - 1; while (ifront < newword && _text.Words[ifront].IsWhitespace) { ifront++; } while (irear >= ifront && _text.Words[irear].IsWhitespace) { irear--; } int w; float total = 0; for (w = ifront; w <= irear; w++) { total += _text.Words[w].Width; } // Adjust the left side of the destination // rectangle according to the specified alignment switch (_options.Alignment) { case StringAlignment.Near: // Do nothing break; case StringAlignment.Center: rc.X = rc.X + (rc.Width - total) / 2; break; case StringAlignment.Far: rc.X = rc.Right - total; break; } // Render the words in the range [ifront, irear] for (w = ifront; w <= irear; w++) { Word word = _text.Words[w]; if (!_fits && hint.AddEllipsis && styled) { if (i == _startLine + _totalLines - 1) { if (j == hLine.Count - 2) { if (w == irear) { // Append the last word with ellipsis StyledText.StyledWord sword = word as StyledText.StyledWord; StyledText.StyledWord newWord = null; int chars = sword.Value.Length; float width = sword.Width; do { newWord = new StyledText.StyledWord( sword.Value.Substring(0, chars) + "...", sword.Format, sword.Color); newWord.UpdateMeasures(hint.Graphics, hint.Font); chars--; }while (chars > 0 && newWord.Width > width); word = newWord; } } } } if (!word.IsLineBreak && !word.IsWhitespace) { if (styled) { // In case of styled text formatting, // apply fonts and colors StyledText.StyledWord sword = word as StyledText.StyledWord; hint.Font = sword.CreateFont(hint.Font); hint.Brush = sword.CreateBrush(hint.Brush); rc.Y += sword.YOffset; } // Add 10 to width and height becaus GDI+ stupid // and clips the text renderCallback(word.Value, new RectangleF( rc.X, rc.Y, word.Width + 10, rc.Height + 10), hint); if (styled) { // Restore font and brush StyledText.StyledWord sword = word as StyledText.StyledWord; sword.DisposeFont(hint.Font); sword.DisposeBrush(hint.Brush); hint.Font = fontOriginal; hint.Brush = brushOriginal; rc.Y -= sword.YOffset; } } rc.X += _text.Words[w].Width; } iword = newword; } if (newLine) { break; } } } }