/// <summary>
/// get from cache or create a new one
/// </summary>
/// <param name="reqFont"></param>
/// <returns></returns>
public SimpleBitmapAtlas GetBitmapAtlas(string atlasName, out B outputBitmap)
{
#if DEBUG
_dbugStopWatch.Reset();
_dbugStopWatch.Start();
#endif
if (!_createdAtlases.TryGetValue(atlasName, out SimpleBitmapAtlas foundAtlas))
{
//check from pre-built cache (if availiable)
string textureInfoFile = atlasName + ".info";
string textureImgFilename = atlasName + ".png";
//check if the file exist
if (StorageService.Provider.DataExists(textureInfoFile) &&
StorageService.Provider.DataExists(textureImgFilename))
{
SimpleBitmapAtlasBuilder atlasBuilder = new SimpleBitmapAtlasBuilder();
using (System.IO.Stream fontAtlasTextureInfo = StorageService.Provider.ReadDataStream(textureInfoFile))
using (System.IO.Stream fontImgStream = StorageService.Provider.ReadDataStream(textureImgFilename))
{
try
{
List <SimpleBitmapAtlas> atlasList = atlasBuilder.LoadAtlasInfo(fontAtlasTextureInfo);
foundAtlas = atlasList[0];
foundAtlas.SetMainBitmap(MemBitmap.LoadBitmap(fontImgStream), true);
_createdAtlases.Add(atlasName, foundAtlas);
}
catch (Exception ex)
{
throw ex;
}
}
}
}
if (foundAtlas != null)
{
outputBitmap = _loadAtlases.GetOrCreateNewOne(foundAtlas);
return(foundAtlas);
}
else
{
#if DEBUG
//show warning about this
System.Diagnostics.Debug.WriteLine("not found atlas:" + atlasName);
#endif
outputBitmap = default(B);
return(null);
}
}
public void RegisterBitmapAtlas(string atlasName, byte[] atlasInfoBuffer, byte[] totalImgBuffer)
{
//direct register atlas
//instead of loading it from file
if (!_createdAtlases.ContainsKey(atlasName))
{
SimpleBitmapAtlasBuilder atlasBuilder = new SimpleBitmapAtlasBuilder();
using (System.IO.Stream fontAtlasTextureInfo = new MemoryStream(atlasInfoBuffer))
using (System.IO.Stream fontImgStream = new MemoryStream(totalImgBuffer))
{
try
{
List <SimpleBitmapAtlas> atlasList = atlasBuilder.LoadAtlasInfo(fontAtlasTextureInfo);
SimpleBitmapAtlas foundAtlas = atlasList[0];
foundAtlas.SetMainBitmap(MemBitmap.LoadBitmap(fontImgStream), true);
_createdAtlases.Add(atlasName, foundAtlas);
}
catch (Exception ex)
{
throw ex;
}
}
}
}
/// <summary>
/// get from cache or create a new one
/// </summary>
/// <param name="reqFont"></param>
/// <returns></returns>
public SimpleBitmapAtlas GetFontAtlas(RequestFont reqFont, out B outputBitmap)
{
#if DEBUG
_dbugStopWatch.Reset();
_dbugStopWatch.Start();
#endif
int fontKey = reqFont.FontKey;
if (_createdAtlases.TryGetValue(fontKey, out SimpleBitmapAtlas fontAtlas))
{
outputBitmap = _loadAtlases.GetOrCreateNewOne(fontAtlas);
return(fontAtlas);
}
//check if we have small msdf texture or not
if (_msdfTextureFonts.TryGetValue(reqFont.Name, out SimpleBitmapAtlas msdfTexture))
{
//use this
outputBitmap = _loadAtlases.GetOrCreateNewOne(msdfTexture);
return(msdfTexture);
}
//--------------------------------
//check from pre-built cache (if availiable)
Typeface resolvedTypeface = _textServices.ResolveTypeface(reqFont);
string fontTextureFile = reqFont.Name + "_" + fontKey;
string resolveFontFile = fontTextureFile + ".info";
string fontTextureInfoFile = resolveFontFile;
string fontTextureImgFilename = fontTextureInfoFile + ".png";
if (StorageService.Provider.DataExists(fontTextureInfoFile) &&
StorageService.Provider.DataExists(fontTextureImgFilename))
{
//check local caching, if found then load-> create it
SimpleBitmapAtlasBuilder atlasBuilder = new SimpleBitmapAtlasBuilder();
lock (s_loadDataLock)
{
using (System.IO.Stream textureInfoFileStream = StorageService.Provider.ReadDataStream(fontTextureInfoFile))
using (System.IO.Stream fontAtlasImgStream = StorageService.Provider.ReadDataStream(fontTextureImgFilename))
{
try
{
//TODO: review here
fontAtlas = atlasBuilder.LoadAtlasInfo(textureInfoFileStream)[0];
fontAtlas.SetMainBitmap(ReadGlyphImages(fontAtlasImgStream), true);
fontAtlas.OriginalFontSizePts = reqFont.SizeInPoints;
_createdAtlases.Add(fontKey, fontAtlas);
}
catch (Exception ex)
{
throw ex;
}
}
}
}
else
{
//-------------
//if not found the request font
//we generate it realtime here, (add add the cache '_createdAtlases')
//-------------
//1. create glyph-texture-bitmap generator
var glyphTextureGen = new GlyphTextureBitmapGenerator();
//2. generate the glyphs
SimpleBitmapAtlasBuilder atlasBuilder = glyphTextureGen.CreateTextureFontFromBuildDetail(
resolvedTypeface,
reqFont.SizeInPoints,
TextureKindForNewFont,
GlyphTextureCustomConfigs.TryGetGlyphTextureBuildDetail(reqFont, false, false)
);
//3. set information before write to font-info
atlasBuilder.FontFilename = reqFont.Name;//TODO: review here, check if we need 'filename' or 'fontname'
atlasBuilder.FontKey = reqFont.FontKey;
atlasBuilder.SpaceCompactOption = SimpleBitmapAtlasBuilder.CompactOption.ArrangeByHeight;
//4. merge all glyph in the builder into a single image
PixelFarm.CpuBlit.MemBitmap totalGlyphsImg = atlasBuilder.BuildSingleImage(true);
//-------------------------------------------------------------
//5. create a simple font atlas from information inside this atlas builder.
fontAtlas = atlasBuilder.CreateSimpleBitmapAtlas();
fontAtlas.SetMainBitmap(totalGlyphsImg, true);
#if DEBUG
//save glyph image for debug
//PixelFarm.Agg.ActualImage.SaveImgBufferToPngFile(
// totalGlyphsImg.GetImageBuffer(),
// totalGlyphsImg.Width * 4,
// totalGlyphsImg.Width, totalGlyphsImg.Height,
// "total_" + reqFont.Name + "_" + reqFont.SizeInPoints + ".png");
////save image to cache
totalGlyphsImg.SaveImage(fontTextureImgFilename);
#endif
//6. cache this in the memory,
_createdAtlases.Add(fontKey, fontAtlas);
//
////calculate some commonly used values
//fontAtlas.SetTextureScaleInfo(
// resolvedTypeface.CalculateScaleToPixelFromPointSize(fontAtlas.OriginalFontSizePts),
// resolvedTypeface.CalculateScaleToPixelFromPointSize(reqFont.SizeInPoints));
////TODO: review here, use scaled or unscaled values
//fontAtlas.SetCommonFontMetricValues(
// resolvedTypeface.Ascender,
// resolvedTypeface.Descender,
// resolvedTypeface.LineGap,
// resolvedTypeface.CalculateRecommendLineSpacing());
///
#if DEBUG
_dbugStopWatch.Stop();
System.Diagnostics.Debug.WriteLine("build font atlas: " + _dbugStopWatch.ElapsedMilliseconds + " ms");
#endif
//TODO: review here again
//save font info to local disk cache
using (System.IO.MemoryStream ms = new System.IO.MemoryStream())
{
atlasBuilder.SaveAtlasInfo(ms);
StorageService.Provider.SaveData(fontTextureInfoFile, ms.ToArray());
#if DEBUG
//write temp debug info
#if !__MOBILE__
System.IO.File.WriteAllBytes(fontTextureInfoFile, ms.ToArray());
System.IO.File.WriteAllText(fontTextureInfoFile + ".txt", reqFont.Name + ",size" + reqFont.SizeInPoints + "pts");
#endif
#endif
}
}
outputBitmap = _loadAtlases.GetOrCreateNewOne(fontAtlas);
return(fontAtlas);
}
