public void SetCurrentTypeface(Typeface typeface)
{
_currentTypeface = typeface;
if (_cacheGlyphPathBuilders.TryGetValue(typeface, out _bitmapList))
{
return;
}
//TODO: you can scale down to proper img size
//or create a single texture atlas.
//if not create a new one
_bitmapList = new GlyphBitmapList();
_cacheGlyphPathBuilders.Add(typeface, _bitmapList);
int glyphCount = typeface.GlyphCount;
System.Text.StringBuilder stbuilder = new System.Text.StringBuilder();
for (ushort i = 0; i < glyphCount; ++i)
{
stbuilder.Length = 0;//reset
Glyph glyph = typeface.GetGlyphByIndex(i);
typeface.ReadSvgContent(glyph, stbuilder);
//create bitmap from svg
GlyphBitmap glyphBitmap = new GlyphBitmap();
glyphBitmap.Width = glyph.MaxX - glyph.MinX;
glyphBitmap.Height = glyph.MaxY - glyph.MinY;
if (glyphBitmap.Width == 0 || glyphBitmap.Height == 0)
{
continue;
}
glyphBitmap.Bitmap = _svgBmpBuilderFunc(stbuilder);// ParseAndRenderSvg(stbuilder, vgDocHost);
if (glyphBitmap.Bitmap == null)
{
continue;
}
//
//MemBitmapExtensions.SaveImage(glyphBitmap.Bitmap, "d:\\WImageTest\\testGlyphBmp_" + i + ".png");
_bitmapList.RegisterBitmap(glyph.GlyphIndex, glyphBitmap);
}
}
public void SetCurrentTypeface(Typeface typeface)
{
_currentTypeface = typeface;
if (_cacheGlyphPathBuilders.TryGetValue(typeface, out _bitmapList))
{
return;
}
//TODO: you can scale down to proper img size
//or create a single texture atlas.
//if not create a new one
_bitmapList = new GlyphBitmapList();
_cacheGlyphPathBuilders.Add(typeface, _bitmapList);
int glyphCount = typeface.GlyphCount;
using (System.IO.MemoryStream ms = new System.IO.MemoryStream())
{
for (ushort i = 0; i < glyphCount; ++i)
{
ms.SetLength(0);
Glyph glyph = typeface.GetGlyphByIndex(i);
typeface.ReadBitmapContent(glyph, ms);
GlyphBitmap glyphBitmap = new GlyphBitmap();
glyphBitmap.Width = glyph.MaxX - glyph.MinX;
glyphBitmap.Height = glyph.MaxY - glyph.MinY;
//glyphBitmap.Bitmap = ...
glyphBitmap.Bitmap = MemBitmap.LoadBitmap(ms);
//MemBitmapExtensions.SaveImage(glyphBitmap.Bitmap, "d:\\WImageTest\\testGlyphBmp_" + i + ".png");
_bitmapList.RegisterBitmap(glyph.GlyphIndex, glyphBitmap);
}
}
}
public void RegisterBitmap(ushort glyphIndex, GlyphBitmap bmp)
{
_dic.Add(glyphIndex, bmp);
}
public bool TryGetBitmap(ushort glyphIndex, out GlyphBitmap bmp)
{
return(_dic.TryGetValue(glyphIndex, out bmp));
}
public override void DrawFromGlyphPlans(GlyphPlanSequence seq, int startAt, int len, float left, float top)
{
if (StartDrawOnLeftTop)
{
//version 2
//offset y down
top += this.FontLineSpacingPx;
}
float fontSizePoint = this.FontSizeInPoints;
float scale = _currentTypeface.CalculateScaleToPixelFromPointSize(fontSizePoint);
//4. render each glyph
float ox = _painter.OriginX;
float oy = _painter.OriginY;
Typography.OpenFont.Tables.COLR colrTable = _currentTypeface.COLRTable;
Typography.OpenFont.Tables.CPAL cpalTable = _currentTypeface.CPALTable;
bool hasColorGlyphs = (colrTable != null) && (cpalTable != null);
//---------------------------------------------------
_glyphMeshStore.SetHintTechnique(this.HintTechnique);
_glyphMeshStore.SetFont(_currentTypeface, fontSizePoint);
_glyphMeshStore.SimulateOblique = this.SimulateSlant;
//---------------------------------------------------
if (_currentTypeface.HasSvgTable())
{
_glyphSvgStore.SetCurrentTypeface(_currentTypeface);
int seqLen = seq.Count;
if (len > seqLen)
{
len = seqLen;
}
var snapToPx = new GlyphPlanSequenceSnapPixelScaleLayout(seq, startAt, len, scale);
while (snapToPx.Read())
{
_painter.SetOrigin((float)Math.Round(left + snapToPx.ExactX) + 0.33f, (float)Math.Floor(top + snapToPx.ExactY));
GlyphBitmap glyphBmp = _glyphSvgStore.GetGlyphBitmap(snapToPx.CurrentGlyphIndex);
//how to draw the image
//1.
if (glyphBmp != null)
{
_painter.DrawImage(glyphBmp.Bitmap);
}
}
}
else if (_currentTypeface.IsBitmapFont)
{
//check if we have exported all the glyph bitmap
//to some 'ready' form?
//if not then create it
_glyphBitmapStore.SetCurrentTypeface(_currentTypeface);
int seqLen = seq.Count;
if (len > seqLen)
{
len = seqLen;
}
var snapToPx = new GlyphPlanSequenceSnapPixelScaleLayout(seq, startAt, len, scale);
while (snapToPx.Read())
{
_painter.SetOrigin((float)Math.Round(left + snapToPx.ExactX) + 0.33f, (float)Math.Floor(top + snapToPx.ExactY));
GlyphBitmap glyphBmp = _glyphBitmapStore.GetGlyphBitmap(snapToPx.CurrentGlyphIndex);
//how to draw the image
//1.
_painter.DrawImage(glyphBmp.Bitmap);
}
}
else
{
if (!hasColorGlyphs)
{
bool savedUseLcdMode = _painter.UseSubPixelLcdEffect; //save,restore later
RenderQuality savedRederQuality = _painter.RenderQuality;
_painter.RenderQuality = RenderQuality.HighQuality;
_painter.UseSubPixelLcdEffect = true;
int seqLen = seq.Count;
if (len > seqLen)
{
len = seqLen;
}
var snapToPx = new GlyphPlanSequenceSnapPixelScaleLayout(seq, startAt, len, scale);
while (snapToPx.Read())
{
_painter.SetOrigin((float)Math.Round(left + snapToPx.ExactX) + 0.33f, (float)Math.Floor(top + snapToPx.ExactY));
_painter.Fill(_glyphMeshStore.GetGlyphMesh(snapToPx.CurrentGlyphIndex));
}
//restore
_painter.RenderQuality = savedRederQuality;
_painter.UseSubPixelLcdEffect = savedUseLcdMode;
}
else
{
//-------------
//this glyph has color information
//-------------
Color originalFillColor = _painter.FillColor;
int seqLen = seq.Count;
if (len > seqLen)
{
len = seqLen;
}
var snapToPx = new GlyphPlanSequenceSnapPixelScaleLayout(seq, startAt, len, scale);
while (snapToPx.Read())
{
_painter.SetOrigin((float)Math.Round(left + snapToPx.ExactX), (float)Math.Floor(top + snapToPx.ExactY));
ushort colorLayerStart;
if (colrTable.LayerIndices.TryGetValue(snapToPx.CurrentGlyphIndex, out colorLayerStart))
{
//TODO: optimize this
//we found color info for this glyph
ushort colorLayerCount = colrTable.LayerCounts[snapToPx.CurrentGlyphIndex];
byte r, g, b, a;
for (int c = colorLayerStart; c < colorLayerStart + colorLayerCount; ++c)
{
ushort gIndex = colrTable.GlyphLayers[c];
int palette = 0; // FIXME: assume palette 0 for now
cpalTable.GetColor(
cpalTable.Palettes[palette] + colrTable.GlyphPalettes[c], //index
out r, out g, out b, out a);
//-----------
_painter.FillColor = new Color(r, g, b);//? a component
_painter.Fill(_glyphMeshStore.GetGlyphMesh(gIndex));
}
}
else
{
//-----------------------------------
//TODO: review here ***
//PERFORMANCE revisit here
//if we have create a vxs we can cache it for later use?
//-----------------------------------
_painter.Fill(_glyphMeshStore.GetGlyphMesh(snapToPx.CurrentGlyphIndex));
}
}
_painter.FillColor = originalFillColor; //restore color
}
}
//restore prev origin
_painter.SetOrigin(ox, oy);
}
