protected List <TextRange> GetTextLines()
{
Font textFont = this.Font;
Rect absArea = this.TextRenderArea;
string allTextString = GetAllText();
List <TextRange> lines =
TextWrapHelper.GetLineBreaks(textFont, allTextString, absArea.Width, nonSpaceWrap);
return(lines);
}
protected float GetTextWidth()
{
Font textFont = this.Font;
Rect absArea = this.TextRenderArea;
string allTextString = GetAllText();
float maxWidth = 0.0f;
List <TextRange> lines =
TextWrapHelper.GetLineBreaks(textFont, allTextString, absArea.Width, nonSpaceWrap);
foreach (TextRange range in lines)
{
float extent = font.GetTextExtent(allTextString.Substring(range.start, range.Length));
maxWidth = (float)Math.Max(maxWidth, extent);
}
return(maxWidth);
}
protected void DrawText(float z)
{
Rect absRect = GetVisibleTextArea();
Rect clipRect = absRect.GetIntersection(this.PixelRect);
Font textFont = this.Font;
// textColors.SetAlpha(EffectiveAlpha);
string allText = GetAllText();
List <TextRange> lines =
TextWrapHelper.GetLineBreaks(textFont, allText, absRect.Width, nonSpaceWrap);
Vector3 drawPos = new Vector3();
drawPos.x = absRect.left;
drawPos.y = absRect.top;
drawPos.z = z;
switch (vertFormat)
{
case VerticalTextFormat.Top:
drawPos.y += 0.0f; // start at the top
break;
case VerticalTextFormat.Bottom:
drawPos.y += absRect.Height - lines.Count * textFont.LineSpacing;
break;
case VerticalTextFormat.Centered:
drawPos.y += (absRect.Height - lines.Count * textFont.LineSpacing) / 2;
break;
}
List <TextChunk> .Enumerator chunkEnum = textChunks.GetEnumerator();
// the offset of the last character that we have drawn
int lastChar = 0;
// the offset of the first character in the chunk we are working with
int chunkStart = 0;
// the offset of the last character in the chunk we are working with
int chunkEnd = 0;
// offset into the active chunk of the first undrawn character
int startOffset;
string portion;
TextChunk chunk = chunkEnum.Current;
foreach (TextRange range in lines)
{
drawPos.x = absRect.left;
string line = allText.Substring(range.start, range.Length);
switch (horzFormat)
{
case HorizontalTextFormat.Left:
case HorizontalTextFormat.WordWrapLeft:
drawPos.x += 0.0f; // start at the left
break;
case HorizontalTextFormat.Right:
case HorizontalTextFormat.WordWrapRight:
drawPos.x += absRect.Width - textFont.GetTextExtent(line);
break;
case HorizontalTextFormat.Center:
case HorizontalTextFormat.WordWrapCentered:
drawPos.x += (absRect.Width - textFont.GetTextExtent(line)) / 2;
break;
}
// while the rest of the current chunk fits completely on this line
while (chunkEnd <= range.end)
{
// offset into this chunk of the first undrawn character
startOffset = lastChar - chunkStart;
// do we have anything to process in this chunk?
if (chunkEnd - lastChar > 0)
{
portion = chunk.text.Substring(startOffset, chunkEnd - lastChar);
DrawText(portion, drawPos, clipRect, chunk.style);
drawPos.x += textFont.GetTextExtent(portion);
lastChar = chunkEnd;
}
if (!chunkEnum.MoveNext())
{
// we have finished processing the last chunk
return;
}
chunk = chunkEnum.Current;
chunkStart = chunkEnd;
chunkEnd += chunk.text.Length;
}
// at this point, chunk end > range end, so the whole chunk
// does not belong on this line
startOffset = lastChar - chunkStart;
portion = chunk.text.Substring(startOffset, range.end - lastChar);
DrawText(portion, drawPos, clipRect, chunk.style);
drawPos.x += textFont.GetTextExtent(portion);
lastChar = range.end;
drawPos.y += font.LineSpacing;
}
}
public Point GetOffset(int textIndex)
{
Rect absRect = GetVisibleTextArea();
Font textFont = this.Font;
// textColors.SetAlpha(EffectiveAlpha);
string allText = GetAllText();
List <TextRange> lines =
TextWrapHelper.GetLineBreaks(textFont, allText, absRect.Width, nonSpaceWrap);
Point drawPos;
drawPos.x = absRect.left;
drawPos.y = absRect.top;
switch (vertFormat)
{
case VerticalTextFormat.Top:
drawPos.y += 0.0f; // start at the top
break;
case VerticalTextFormat.Bottom:
drawPos.y += absRect.Height - lines.Count * textFont.LineSpacing;
break;
case VerticalTextFormat.Centered:
drawPos.y += (absRect.Height - lines.Count * textFont.LineSpacing) / 2;
break;
}
for (int i = 0; i < lines.Count; ++i)
{
TextRange range = lines[i];
if (range.end <= textIndex && (i < (lines.Count - 1)))
{
drawPos.y += font.LineSpacing;
continue;
}
string line = allText.Substring(range.start, range.Length);
switch (horzFormat)
{
case HorizontalTextFormat.Left:
case HorizontalTextFormat.WordWrapLeft:
drawPos.x += 0.0f; // start at the left
break;
case HorizontalTextFormat.Right:
case HorizontalTextFormat.WordWrapRight:
drawPos.x += absRect.Width - textFont.GetTextExtent(line);
break;
case HorizontalTextFormat.Center:
case HorizontalTextFormat.WordWrapCentered:
drawPos.x += (absRect.Width - textFont.GetTextExtent(line)) / 2;
break;
}
if (range.start > textIndex)
{
return(drawPos);
}
// some of the text precedes the offset
string portion = line.Substring(0, textIndex - range.start);
drawPos.x += textFont.GetTextExtent(portion);
}
return(drawPos);
}
