private void DrawText(string portion, Vector3 drawPos, Rect clipRect, TextStyle style)
{
// Trace.TraceInformation("Drawing '{0}' at [{1},{2}] clipped by {3}", portion, drawPos.x, drawPos.y, clipRect);
float textZ = drawPos.z - (int)SubLevel.Normal * GuiZSubLevelStep;
float shadowZ = drawPos.z - (int)SubLevel.Shadow * GuiZSubLevelStep;
float bgZ = drawPos.z - (int)SubLevel.Background * GuiZSubLevelStep;
Font textFont = this.Font;
// Draw these on integer boundaries
drawPos.x = (int)drawPos.x;
drawPos.y = (int)drawPos.y;
drawPos.z = textZ;
ColorRect colors;
if (style.bgEnabled)
{
float x = textFont.GetTextExtent(portion);
float y = textFont.LineSpacing;
colors = new ColorRect(style.bgColor);
Rect bgRect = new Rect(drawPos.x, drawPos.y,
drawPos.x + x, drawPos.y + y);
bgImage.Draw(bgRect, bgZ, clipRect, colors);
}
colors = new ColorRect(style.textColor);
textFont.DrawTextLine(portion, drawPos, clipRect, colors);
if (style.shadowEnabled)
{
drawPos.x += shadowOffset.x;
drawPos.y += shadowOffset.y;
drawPos.z = shadowZ;
colors = new ColorRect(style.shadowColor);
textFont.DrawTextLine(portion, drawPos, clipRect, colors);
}
}
protected override void DrawSelf(float z)
{
base.DrawSelf(z);
Rect clipRect = this.PixelRect;
// Draw the caret
string allText = GetAllText();
if (caretIndex > allText.Length)
{
caretIndex = allText.Length;
}
Point pt = GetOffset(caretIndex);
Vector3 drawPos = new Vector3(pt.x, pt.y, z);
drawPos.z -= (int)layerLevel * GuiZLevelStep;
drawPos.z -= (int)SubLevel.Caret * GuiZSubLevelStep;
if (drawPos.x < clipRect.left)
{
drawPos.x = clipRect.left;
}
else if (drawPos.x + caret.Width > clipRect.right)
{
drawPos.x = clipRect.right - caret.Width;
}
Size caretSize = new Size(caret.Width, font.LineSpacing);
ColorRect caretColorRect = new ColorRect(new Color(1, 1, 1));
caret.Draw(drawPos, caretSize, clipRect, caretColorRect);
}
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;
}
}
