internal CCTexture2D CreateTextSprite(string text, CCFontDefinition textDefinition)
{
if (string.IsNullOrEmpty(text))
return new CCTexture2D();
int imageWidth;
int imageHeight;
var textDef = textDefinition;
var contentScaleFactorWidth = CCLabel.DefaultTexelToContentSizeRatios.Width;
var contentScaleFactorHeight = CCLabel.DefaultTexelToContentSizeRatios.Height;
textDef.FontSize *= contentScaleFactorWidth;
textDef.Dimensions.Width *= contentScaleFactorWidth;
textDef.Dimensions.Height *= contentScaleFactorHeight;
//bool hasPremultipliedAlpha;
// font
NSFont font = null;
var ext = System.IO.Path.GetExtension(textDef.FontName);
if (!String.IsNullOrEmpty(ext) && ext.ToLower() == ".ttf")
{
try
{
textDef.FontName = LoadFontFile(textDef.FontName);
font = NSFont.FromFontName(textDef.FontName, textDef.FontSize);
}
catch
{
CCLog.Log(".ttf {0} file not found or can not be loaded.", textDef.FontName);
}
}
else
{
// font
font = NSFontManager.SharedFontManager.FontWithFamily(textDef.FontName, NSFontTraitMask.Unbold | NSFontTraitMask.Unitalic, 0, textDef.FontSize);
}
if (font == null)
{
font = NSFontManager.SharedFontManager.FontWithFamily("Arial", NSFontTraitMask.Unbold | NSFontTraitMask.Unitalic, 0, textDef.FontSize);
CCLog.Log("{0} not found. Defaulting to Arial.", textDef.FontName);
}
// color
var foregroundColor = NSColor.White;
// alignment
var horizontalAlignment = textDef.Alignment;
var verticleAlignement = textDef.LineAlignment;
var textAlign = (CCTextAlignment.Right == horizontalAlignment) ? NSTextAlignment.Right
: (CCTextAlignment.Center == horizontalAlignment) ? NSTextAlignment.Center
: NSTextAlignment.Left;
// LineBreak
var lineBreak = (CCLabelLineBreak.Character == textDef.LineBreak) ? NSLineBreakMode.CharWrapping
: (CCLabelLineBreak.Word == textDef.LineBreak) ? NSLineBreakMode.ByWordWrapping
: NSLineBreakMode.Clipping;
var nsparagraphStyle = new NSMutableParagraphStyle();
nsparagraphStyle.SetParagraphStyle(NSMutableParagraphStyle.DefaultParagraphStyle);
nsparagraphStyle.LineBreakMode = lineBreak;
nsparagraphStyle.Alignment = textAlign;
// Create a new attributed string definition
var nsAttributes = new NSStringAttributes ();
// Font attribute
nsAttributes.Font = font;
nsAttributes.ForegroundColor = foregroundColor;
nsAttributes.ParagraphStyle = nsparagraphStyle;
var stringWithAttributes = new NSAttributedString(text, nsAttributes);
var realDimensions = stringWithAttributes.Size;
// Mac crashes if the width or height is 0
if (realDimensions == SizeF.Empty)
{
CCLog.Log("Native string:", "Dimensions of native NSAttributedString can not be 0,0");
return new CCTexture2D();
}
var dimensions = new SizeF(textDef.Dimensions.Width, textDef.Dimensions.Height);
var layoutAvailable = true;
//
// * Note * This seems to only effect Mac because iOS works fine without this work around.
// Right Alignment BoundingRectWithSize does not seem to be working correctly when the following conditions are set:
// 1) Alignment Right
// 2) No dimensions
// 3) There are new line characters embedded in the string.
//
// So we set alignment to Left, calculate our bounds and then restore alignement afterwards before drawing.
//
if (dimensions.Width <= 0)
{
dimensions.Width = 8388608;
layoutAvailable = false;
// Set our alignment variables to left - see notes above.
nsparagraphStyle.Alignment = NSTextAlignment.Left;
stringWithAttributes.Dispose();
stringWithAttributes = null;
stringWithAttributes = new NSAttributedString(text, nsAttributes);
}
if (dimensions.Height <= 0)
{
dimensions.Height = 8388608;
layoutAvailable = false;
}
// Calculate our bounding rectangle
var boundingRect = stringWithAttributes.BoundingRectWithSize(new SizeF((int)dimensions.Width, (int)dimensions.Height),
NSStringDrawingOptions.UsesLineFragmentOrigin);
if (!layoutAvailable)
{
if (dimensions.Width == 8388608)
{
dimensions.Width = boundingRect.Width;
// Restore our alignment before drawing - see notes above.
nsparagraphStyle.Alignment = textAlign;
stringWithAttributes.Dispose();
stringWithAttributes = null;
stringWithAttributes = new NSAttributedString(text, nsAttributes);
}
if (dimensions.Height == 8388608)
{
dimensions.Height = boundingRect.Height;
}
}
imageWidth = (int)dimensions.Width;
imageHeight = (int)dimensions.Height;
// Alignment
var xOffset = 0.0f;
switch (textAlign) {
case NSTextAlignment.Left:
xOffset = 0;
break;
case NSTextAlignment.Center:
xOffset = (dimensions.Width-boundingRect.Width)/2.0f;
break;
case NSTextAlignment.Right: xOffset = dimensions.Width-boundingRect.Width; break;
default: break;
}
// Line alignment
var yOffset = (CCVerticalTextAlignment.Top == verticleAlignement
|| boundingRect.Height >= dimensions.Height) ? (dimensions.Height - boundingRect.Height) // align to top
: (CCVerticalTextAlignment.Bottom == verticleAlignement) ? 0 // align to bottom
: (imageHeight - boundingRect.Height) / 2.0f; // align to center
//Find the rect that the string will draw into inside the dimensions
var drawRect = new RectangleF(xOffset
, yOffset
, boundingRect.Width
, boundingRect.Height);
NSImage image = null;
try
{
//Set antialias or not
NSGraphicsContext.CurrentContext.ShouldAntialias = textDef.isShouldAntialias;
image = new NSImage(new SizeF(imageWidth, imageHeight));
image.LockFocus();
// set a default transform
var transform = new NSAffineTransform();
transform.Set();
stringWithAttributes.DrawInRect(drawRect);
image.UnlockFocus();
// We will use Texture2D from stream here instead of CCTexture2D stream.
var tex = Texture2D.FromStream(CCDrawManager.SharedDrawManager.XnaGraphicsDevice, image);
// Debugging purposes
// var path = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
// var fileName = Path.Combine(path, "Label3.png");
// using (var stream = new FileStream(fileName, FileMode.Create, FileAccess.Write))
// {
// tex.SaveAsPng(stream, imageWidth, imageHeight);
// }
// Create our texture of the label string.
var texture = new CCTexture2D(tex);
return texture;
}
catch (Exception exc)
{
CCLog.Log ("CCLabel: Error creating native label:{0}\n{1}", exc.Message, exc.StackTrace);
}
finally
{
// clean up the resources
if (image != null)
{
image.Dispose ();
image = null;
}
if (stringWithAttributes != null)
{
stringWithAttributes.Dispose ();
stringWithAttributes = null;
}
}
return new CCTexture2D ();
}