public override void RemoveAllChildren(bool cleanup)
{
// Invalidate atlas index. issue #569
// useSelfRender should be performed on all descendants. issue #1216
CCSprite[] elements = Descendants.Elements;
for (int i = 0, count = Descendants.Count; i < count; i++)
{
elements[i].BatchNode = null;
}
base.RemoveAllChildren(cleanup);
Descendants.Clear();
TextureAtlas.RemoveAllQuads();
}
void LayoutLabel()
{
if (FontAtlas == null || string.IsNullOrEmpty(Text))
{
ContentSize = CCSize.Zero;
return;
}
TextureAtlas.RemoveAllQuads();
Descendants.Clear();
lettersInfo.Clear();
FontAtlas.PrepareLetterDefinitions(Text);
var start = 0;
var typesetter = new CCTLTextLayout(this);
var length = Text.Length;
var insetBounds = labelDimensions;
var layoutAvailable = true;
if (insetBounds == CCSize.Zero)
{
insetBounds = new CCSize(8388608, 8388608);
layoutAvailable = false;
}
var boundsWidth = insetBounds.Width;
var contentScaleFactorWidth = CCLabel.DefaultTexelToContentSizeRatios.Width;
var contentScaleFactorHeight = CCLabel.DefaultTexelToContentSizeRatios.Height;
List <CCTLLine> lineList = new List <CCTLLine>();
while (start < length)// && textPosition.Y < insetBounds.Bottom)
{
// Now we ask the typesetter to break off a line for us.
// This also will take into account line feeds embedded in the text.
// Example: "This is text \n with a line feed embedded inside it"
int count = typesetter.SuggestLineBreak(start, boundsWidth);
var line = typesetter.GetLine(start, start + count);
lineList.Add(line);
start += count;
}
// Calculate our vertical starting position
var totalHeight = lineList.Count * LineHeight;
var nextFontPositionY = totalHeight;
if (Dimensions.Height > 0)
{
var labelHeightPixel = Dimensions.Height * contentScaleFactorHeight;
if (totalHeight > labelHeightPixel)
{
int numLines = (int)(labelHeightPixel / LineHeight);
totalHeight = numLines * LineHeight;
}
switch (VerticalAlignment)
{
case CCVerticalTextAlignment.Top:
nextFontPositionY = labelHeightPixel;
break;
case CCVerticalTextAlignment.Center:
nextFontPositionY = (labelHeightPixel + totalHeight) * 0.5f;
break;
case CCVerticalTextAlignment.Bottom:
nextFontPositionY = totalHeight;
break;
default:
break;
}
}
var lineGlyphIndex = 0;
float longestLine = (labelDimensions.Width > 0) ? labelDimensions.Width : 0;
// Used for calculating overlapping on last line character
var lastCharWidth = 0.0f;
int lastCharAdvance = 0;
// Define our horizontal justification
var flushFactor = (float)HorizontalAlignment / (float)CCTextAlignment.Right;
// We now loop through all of our line's glyph runs
foreach (var line in lineList)
{
var gliphRun = line.GlyphRun;
var lineWidth = line.Bounds.Width * contentScaleFactorWidth;
var flush = line.PenOffsetForFlush(flushFactor, boundsWidth);
foreach (var glyph in gliphRun)
{
var letterPosition = glyph.Position;
var letterDef = glyph.Definition;
lastCharWidth = letterDef.Width * contentScaleFactorWidth;
letterPosition.X += flush;
letterPosition.Y = (nextFontPositionY - letterDef.YOffset) / contentScaleFactorHeight;
//recordLetterInfo(letterPosition, glyph.def, lineGlyphIndex++);
var tmpInfo = new LetterInfo();
tmpInfo.Definition = letterDef;
tmpInfo.Position = letterPosition;
tmpInfo.ContentSize.Width = letterDef.Width;
tmpInfo.ContentSize.Height = letterDef.Height;
if (lineGlyphIndex >= lettersInfo.Count)
{
lettersInfo.Add(tmpInfo);
}
else
{
lettersInfo[lineGlyphIndex] = tmpInfo;
}
lineGlyphIndex++;
lastCharAdvance = (int)glyph.Definition.XAdvance;
}
// calculate our longest line which is used for calculating our ContentSize
if (lineWidth > longestLine)
{
longestLine = lineWidth;
}
nextFontPositionY -= LineHeight;
}
CCSize tmpSize;
// If the last character processed has an xAdvance which is less that the width of the characters image, then we need
// to adjust the width of the string to take this into account, or the character will overlap the end of the bounding
// box
if (lastCharAdvance < lastCharWidth)
{
tmpSize.Width = longestLine - lastCharAdvance + lastCharWidth;
}
else
{
tmpSize.Width = longestLine;
}
tmpSize.Height = totalHeight;
if (Dimensions.Height > 0)
{
tmpSize.Height = Dimensions.Height * contentScaleFactorHeight;
}
ContentSize = tmpSize / CCLabel.DefaultTexelToContentSizeRatios;
lineList.Clear();
CCRect uvRect;
CCSprite letterSprite;
for (int c = 0; c < Children.Count; c++)
{
letterSprite = (CCSprite)Children[c];
int tag = letterSprite.Tag;
if (tag >= length)
{
RemoveChild(letterSprite, true);
}
else if (tag >= 0)
{
if (letterSprite != null)
{
uvRect = lettersInfo[tag].Definition.Subrect;
letterSprite.TextureRectInPixels = uvRect;
letterSprite.ContentSize = uvRect.Size;
}
}
}
UpdateQuads();
UpdateColor();
}