//
public void CalculateUserCharGlyphAdvancePos(ref TextBufferSpan textBufferSpan,
ILineSegmentList lineSegs,
RequestFont font,
int[] outputUserInputCharAdvance, out int outputTotalW, out int lineHeight)
{
//layout
//from font
//resolve for typeface
//
Typeface typeface = ResolveTypeface(font);
_txtServices.SetCurrentFont(typeface, font.SizeInPoints);
MyLineSegmentList mylineSegs = (MyLineSegmentList)lineSegs;
float scale = typeface.CalculateScaleToPixelFromPointSize(font.SizeInPoints);
outputTotalW = 0;
int j = mylineSegs.Count;
int pos = 0; //start at 0
_reusableTextBuffer.SetRawCharBuffer(textBufferSpan.GetRawCharBuffer());
for (int i = 0; i < j; ++i)
{
//get each segment
MyLineSegment lineSeg = (MyLineSegment)mylineSegs.GetSegment(i);
//each line seg may has different script lang
_txtServices.CurrentScriptLang = lineSeg.scriptLang;
//
//CACHING ...., reduce number of GSUB/GPOS
//
//we cache used line segment for a while
//we ask for caching context for a specific typeface and font size
GlyphPlanSequence seq = _txtServices.GetUnscaledGlyphPlanSequence(_reusableTextBuffer,
lineSeg.StartAt,
lineSeg.Length);
int seqLen = seq.Count;
for (int s = 0; s < seqLen; ++s)
{
UnscaledGlyphPlan glyphPlan = seq[s];
double actualAdvX = glyphPlan.AdvanceX;
outputTotalW +=
outputUserInputCharAdvance[pos + glyphPlan.input_cp_offset] +=
(int)Math.Round(actualAdvX * scale);
}
pos += lineSeg.Length;
}
//
lineHeight = (int)Math.Round(typeface.CalculateRecommendLineSpacing() * scale);
_reusableTextBuffer.SetRawCharBuffer(null);
}
public static void CopyGlyphPlans(RenderVxFormattedString renderVx, UnscaledGlyphPlanList glyphPlans, float scale)
{
int n = glyphPlans.Count;
//copy
var renderVxGlyphPlans = new RenderVxGlyphPlan[n];
float acc_x = 0;
float acc_y = 0;
float x = 0;
float y = 0;
float g_x = 0;
float g_y = 0;
for (int i = 0; i < n; ++i)
{
UnscaledGlyphPlan glyphPlan = glyphPlans[i];
float ngx = acc_x + (float)Math.Round(glyphPlan.OffsetX * scale);
float ngy = acc_y + (float)Math.Round(glyphPlan.OffsetY * scale);
//NOTE:
// -glyphData.TextureXOffset => restore to original pos
// -glyphData.TextureYOffset => restore to original pos
//--------------------------
g_x = (float)(x + ngx); //ideal x
g_y = (float)(y + ngy);
float g_w = (float)Math.Round(glyphPlan.AdvanceX * scale);
acc_x += g_w;
//g_x = (float)Math.Round(g_x);
g_y = (float)Math.Floor(g_y);
renderVxGlyphPlans[i] = new RenderVxGlyphPlan(
glyphPlan.glyphIndex,
g_x,
g_y,
g_w
);
}
renderVx.glyphList = renderVxGlyphPlans;
}
public void PrepareStringForRenderVx(RenderVxFormattedString renderVx, char[] buffer, int startAt, int len)
{
int j = buffer.Length;
//create temp buffer span that describe the part of a whole char buffer
TextBufferSpan textBufferSpan = new TextBufferSpan(buffer, startAt, len);
//ask text service to parse user input char buffer and create a glyph-plan-sequence (list of glyph-plan)
//with specific request font
GlyphPlanSequence glyphPlanSeq = _textServices.CreateGlyphPlanSeq(ref textBufferSpan, font);
float scale = _fontAtlas.TargetTextureScale;
int recommendLineSpacing = _fontAtlas.OriginalRecommendLineSpacing;
//--------------------------
//TODO:
//if (x,y) is left top
//we need to adjust y again
float x = 0;
float y = 0;
y -= ((recommendLineSpacing) * scale);
renderVx.RecommmendLineSpacing = (int)(recommendLineSpacing * scale);
//
float scaleFromTexture = _finalTextureScale;
TextureKind textureKind = _fontAtlas.TextureKind;
//--------------------------
//TODO: review render steps
//NOTE:
// -glyphData.TextureXOffset => restore to original pos
// -glyphData.TextureYOffset => restore to original pos
// ideal_x = (float)(x + (glyph.x * scale - glyphData.TextureXOffset) * scaleFromTexture);
// ideal_y = (float)(y + (glyph.y * scale - glyphData.TextureYOffset + srcRect.Height) * scaleFromTexture);
//--------------------------
float g_x = 0;
float g_y = 0;
int baseY = (int)Math.Round(y);
int n = glyphPlanSeq.len;
int endBefore = glyphPlanSeq.startAt + n;
//***
_glsx.SetAssociatedTextureInfo(_glBmp);
//
vboBufferList2.Clear();
indexList2.Clear();
float acc_x = 0;
float acc_y = 0;
for (int i = glyphPlanSeq.startAt; i < endBefore; ++i)
{
UnscaledGlyphPlanList glyphPlanList = GlyphPlanSequence.UnsafeGetInteralGlyphPlanList(glyphPlanSeq);
UnscaledGlyphPlan glyph = glyphPlanList[i];
Typography.Rendering.TextureFontGlyphData glyphData;
if (!_fontAtlas.TryGetGlyphDataByGlyphIndex(glyph.glyphIndex, out glyphData))
{
//if no glyph data, we should render a missing glyph ***
continue;
}
//--------------------------------------
//TODO: review precise height in float
//--------------------------------------
PixelFarm.Drawing.Rectangle srcRect = ConvToRect(glyphData.Rect);
float ngx = acc_x + (float)Math.Round(glyph.OffsetX * scale);
float ngy = acc_y + (float)Math.Round(glyph.OffsetY * scale);
//NOTE:
// -glyphData.TextureXOffset => restore to original pos
// -glyphData.TextureYOffset => restore to original pos
//--------------------------
g_x = (float)(x + (ngx - glyphData.TextureXOffset) * scaleFromTexture); //ideal x
g_y = (float)(y + (ngy - glyphData.TextureYOffset + srcRect.Height) * scaleFromTexture);
acc_x += (float)Math.Round(glyph.AdvanceX * scale);
//g_x = (float)Math.Round(g_x);
g_y = (float)Math.Floor(g_y);
switch (textureKind)
{
case TextureKind.Msdf:
_glsx.DrawSubImageWithMsdf(_glBmp,
ref srcRect,
g_x,
g_y,
scaleFromTexture);
break;
case TextureKind.StencilGreyScale:
//stencil gray scale with fill-color
_glsx.DrawGlyphImageWithStecil(_glBmp,
ref srcRect,
g_x,
g_y,
scaleFromTexture);
break;
case TextureKind.Bitmap:
_glsx.DrawSubImage(_glBmp,
ref srcRect,
g_x,
g_y,
scaleFromTexture);
break;
case TextureKind.StencilLcdEffect:
_glsx.WriteVboToList(
vboBufferList2,
indexList2,
ref srcRect,
g_x,
g_y,
scaleFromTexture);
break;
}
}
//---------
DrawingGL.GLRenderVxFormattedString renderVxFormattedString = (DrawingGL.GLRenderVxFormattedString)renderVx;
renderVxFormattedString.IndexArray = indexList2.ToArray();
renderVxFormattedString.VertexCoords = vboBufferList2.ToArray();
renderVxFormattedString.VertexCount = indexList2.Count;
}
public void DrawString(char[] buffer, int startAt, int len, double x, double y)
{
_glsx.FontFillColor = painter.FontFillColor;
int j = buffer.Length;
//create temp buffer span that describe the part of a whole char buffer
TextBufferSpan textBufferSpan = new TextBufferSpan(buffer, startAt, len);
//ask text service to parse user input char buffer and create a glyph-plan-sequence (list of glyph-plan)
//with specific request font
GlyphPlanSequence glyphPlanSeq = _textServices.CreateGlyphPlanSeq(ref textBufferSpan, font);
float scale = _fontAtlas.TargetTextureScale;
int recommendLineSpacing = _fontAtlas.OriginalRecommendLineSpacing;
//--------------------------
//TODO:
//if (x,y) is left top
//we need to adjust y again
y -= ((_fontAtlas.OriginalRecommendLineSpacing) * scale);
EnsureLoadGLBmp();
//
float scaleFromTexture = _finalTextureScale;
TextureKind textureKind = _fontAtlas.TextureKind;
float g_x = 0;
float g_y = 0;
int baseY = (int)Math.Round(y);
int n = glyphPlanSeq.len;
int endBefore = glyphPlanSeq.startAt + n;
//-------------------------------------
_glsx.LoadTexture1(_glBmp);
//-------------------------------------
_vboBufferList.Clear(); //clear before use
_indexList.Clear(); //clear before use
float acc_x = 0;
float acc_y = 0;
for (int i = glyphPlanSeq.startAt; i < endBefore; ++i)
{
UnscaledGlyphPlanList glyphPlanList = GlyphPlanSequence.UnsafeGetInteralGlyphPlanList(glyphPlanSeq);
UnscaledGlyphPlan glyph = glyphPlanList[i];
Typography.Rendering.TextureFontGlyphData glyphData;
if (!_fontAtlas.TryGetGlyphDataByGlyphIndex(glyph.glyphIndex, out glyphData))
{
//if no glyph data, we should render a missing glyph ***
continue;
}
//--------------------------------------
//TODO: review precise height in float
//--------------------------------------
PixelFarm.Drawing.Rectangle srcRect = ConvToRect(glyphData.Rect);
float ngx = acc_x + (float)Math.Round(glyph.OffsetX * scale);
float ngy = acc_y + (float)Math.Round(glyph.OffsetY * scale);
//NOTE:
// -glyphData.TextureXOffset => restore to original pos
// -glyphData.TextureYOffset => restore to original pos
//--------------------------
g_x = (float)(x + (ngx - glyphData.TextureXOffset) * scaleFromTexture); //ideal x
g_y = (float)(y + (ngy - glyphData.TextureYOffset + srcRect.Height) * scaleFromTexture);
acc_x += (float)Math.Round(glyph.AdvanceX * scale);
//g_x = (float)Math.Round(g_x);
g_y = (float)Math.Floor(g_y);
switch (textureKind)
{
case TextureKind.Msdf:
_glsx.DrawSubImageWithMsdf(_glBmp,
ref srcRect,
g_x,
g_y,
scaleFromTexture);
break;
case TextureKind.StencilGreyScale:
//stencil gray scale with fill-color
_glsx.DrawGlyphImageWithStecil(_glBmp,
ref srcRect,
g_x,
g_y,
scaleFromTexture);
break;
case TextureKind.Bitmap:
_glsx.DrawSubImage(_glBmp,
ref srcRect,
g_x,
g_y,
scaleFromTexture);
break;
case TextureKind.StencilLcdEffect:
_glsx.WriteVboToList(
_vboBufferList,
_indexList,
ref srcRect,
g_x,
g_y,
scaleFromTexture);
break;
}
}
//-------
//we create vbo first
//then render
_glsx.DrawGlyphImageWithSubPixelRenderingTechnique3(_vboBufferList.ToArray(), _indexList.ToArray());
}
/// <summary>
/// generate glyph run into a given textRun
/// </summary>
/// <param name="outputTextRun"></param>
/// <param name="charBuffer"></param>
/// <param name="start"></param>
/// <param name="len"></param>
public void GenerateGlyphRuns(TextRun outputTextRun, char[] charBuffer, int start, int len)
{
// layout glyphs with selected layout technique
float sizeInPoints = this.FontSizeInPoints;
outputTextRun.typeface = this.Typeface;
outputTextRun.sizeInPoints = sizeInPoints;
//in this version we store original glyph into the mesh collection
//and then we scale it later, so I just specific font size=0 (you can use any value)
_glyphMeshCollection.SetCacheInfo(this.Typeface, 0, this.HintTechnique);
GlyphLayoutMan.Typeface = this.Typeface;
GlyphLayoutMan.Layout(charBuffer, start, len);
float pxscale = this.Typeface.CalculateScaleToPixelFromPointSize(sizeInPoints);
_resuableGlyphPlanList.Clear();
GenerateGlyphPlan(charBuffer, 0, charBuffer.Length, _resuableGlyphPlanList);
// render each glyph
int planCount = _resuableGlyphPlanList.Count;
for (var i = 0; i < planCount; ++i)
{
_pathTranslator.Reset();
//----
//glyph path
//----
UnscaledGlyphPlan glyphPlan = _resuableGlyphPlanList[i];
//
//1. check if we have this glyph in cache?
//if yes, not need to build it again
ProcessedGlyph processGlyph;
float[] tessData = null;
if (!_glyphMeshCollection.TryGetCacheGlyph(glyphPlan.glyphIndex, out processGlyph))
{
//if not found the create a new one and register it
var writablePath = new WritablePath();
_pathTranslator.SetOutput(writablePath);
_currentGlyphPathBuilder.BuildFromGlyphIndex(glyphPlan.glyphIndex, sizeInPoints);
_currentGlyphPathBuilder.ReadShapes(_pathTranslator);
//-------
//do tess
int[] endContours;
float[] flattenPoints = _curveFlattener.Flatten(writablePath._points, out endContours);
tessData = _tessTool.TessAsTriVertexArray(flattenPoints, endContours, out int vertexCount);
processGlyph = new ProcessedGlyph(tessData, (ushort)vertexCount);
_glyphMeshCollection.RegisterCachedGlyph(glyphPlan.glyphIndex, processGlyph);
}
outputTextRun.AddGlyph(
new GlyphRun(glyphPlan,
processGlyph.tessData,
processGlyph.vertextCount));
}
}
public void DrawString(Painter p, char[] buffer, int startAt, int len, double x, double y)
{
//if (_stencilBmp == null)
//{
// //create a stencil bmp
// _stencilBmp = new ActualBitmap(p.Width, p.Height);
// _stencilBlender = new PixelProcessing.SubBitmapBlender(_stencilBmp, new PixelProcessing.PixelBlenderBGRA());
// _backPainter = AggPainter.Create(_stencilBmp);
// //------
//}
int j = buffer.Length;
//create temp buffer span that describe the part of a whole char buffer
TextBufferSpan textBufferSpan = new TextBufferSpan(buffer, startAt, len);
//ask text service to parse user input char buffer and create a glyph-plan-sequence (list of glyph-plan)
//with specific request font
GlyphPlanSequence glyphPlanSeq = _textServices.CreateGlyphPlanSeq(ref textBufferSpan, _font);
Typeface typeface = _textServices.ResolveTypeface(_font);
float scale = typeface.CalculateScaleToPixelFromPointSize(_font.SizeInPoints);
int recommendLineSpacing = (int)_font.LineSpacingInPixels;
//--------------------------
//TODO:
//if (x,y) is left top
//we need to adjust y again
y -= _font.LineSpacingInPixels;
//
float scaleFromTexture = _finalTextureScale;
TextureKind textureKind = _fontAtlas.TextureKind;
float g_x = 0;
float g_y = 0;
int baseY = (int)Math.Round(y);
//-------------------------------------
//load texture
//_pcx.LoadTexture1(_glBmp);
//-------------------------------------
float acc_x = 0;
float acc_y = 0;
p.DrawImage(_fontBmp, 100, 100);
int seqLen = glyphPlanSeq.Count;
for (int i = 0; i < seqLen; ++i)
{
UnscaledGlyphPlan glyph = glyphPlanSeq[i];
TextureGlyphMapData glyphData;
if (!_fontAtlas.TryGetGlyphMapData(glyph.glyphIndex, out glyphData))
{
//if no glyph data, we should render a missing glyph ***
continue;
}
//--------------------------------------
//TODO: review precise height in float
//--------------------------------------
int srcX, srcY, srcW, srcH;
glyphData.GetRect(out srcX, out srcY, out srcW, out srcH);
float ngx = acc_x + (float)Math.Round(glyph.OffsetX * scale);
float ngy = acc_y + (float)Math.Round(glyph.OffsetY * scale);
//NOTE:
// -glyphData.TextureXOffset => restore to original pos
// -glyphData.TextureYOffset => restore to original pos
//--------------------------
g_x = (float)(x + (ngx - glyphData.TextureXOffset) * scaleFromTexture); //ideal x
g_y = (float)(y + (ngy - glyphData.TextureYOffset + srcH) * scaleFromTexture);
acc_x += (float)Math.Round(glyph.AdvanceX * scale);
//g_x = (float)Math.Round(g_x);
g_y = (float)Math.Floor(g_y);
//p.RenderQuality = RenderQuality.Fast;
//*** the atlas is inverted so...
//p.DrawImage(_fontBmp, g_x, g_y, srcX, _fontBmp.Height - (srcY), srcW, srcH);
//p.DrawImage(_fontBmp, g_x, g_y);
//1. draw to back buffer
//_backPainter.DrawImage(_fontBmp, g_x, g_y, srcX, _fontBmp.Height - (srcY), srcW, srcH);
//2. then copy content to this
//p.DrawImage(_stencilBmp, 100, 100);
p.DrawImage(_fontBmp, g_x, g_y, srcX, _fontBmp.Height - (srcY + srcH), srcW, srcH);
switch (textureKind)
{
default:
break;
case TextureKind.StencilLcdEffect:
{
}
break;
}
//copy some part from the bitmap
//switch (textureKind)
//{
// case TextureKind.Msdf:
// _pcx.DrawSubImageWithMsdf(_glBmp,
// ref srcRect,
// g_x,
// g_y,
// scaleFromTexture);
// break;
// case TextureKind.StencilGreyScale:
// //stencil gray scale with fill-color
// _pcx.DrawGlyphImageWithStecil(_glBmp,
// ref srcRect,
// g_x,
// g_y,
// scaleFromTexture);
// break;
// case TextureKind.Bitmap:
// _pcx.DrawSubImage(_glBmp,
// ref srcRect,
// g_x,
// g_y,
// scaleFromTexture);
// break;
// case TextureKind.StencilLcdEffect:
// _pcx.WriteVboToList(
// _vboBufferList,
// _indexList,
// ref srcRect,
// g_x,
// g_y,
// scaleFromTexture);
// break;
//}
}
//-------
//we create vbo first
//then render
}
public override void DrawFromGlyphPlans(UnscaledGlyphPlanList glyphPlanList, int startAt, int len, float x, float y)
{
UpdateVisualOutputSettings();
//draw data in glyph plan
//3. render each glyph
float sizeInPoints = this.FontSizeInPoints;
float scale = _currentTypeface.CalculateScaleToPixelFromPointSize(sizeInPoints);
//
_glyphMeshCollections.SetCacheInfo(this.Typeface, sizeInPoints, this.HintTechnique);
//this draw a single line text span***
int endBefore = startAt + len;
Graphics g = this.TargetGraphics;
float acc_x = 0;
float acc_y = 0;
float g_x = 0;
float g_y = 0;
for (int i = startAt; i < endBefore; ++i)
{
UnscaledGlyphPlan glyphPlan = glyphPlanList[i];
//check if we have a cache of this glyph
//if not -> create it
GraphicsPath foundPath;
if (!_glyphMeshCollections.TryGetCacheGlyph(glyphPlan.glyphIndex, out foundPath))
{
//if not found then create a new one
_currentGlyphPathBuilder.BuildFromGlyphIndex(glyphPlan.glyphIndex, sizeInPoints);
_txToGdiPath.Reset();
_currentGlyphPathBuilder.ReadShapes(_txToGdiPath);
foundPath = _txToGdiPath.ResultGraphicsPath;
//register
_glyphMeshCollections.RegisterCachedGlyph(glyphPlan.glyphIndex, foundPath);
}
//------
//then move pen point to the position we want to draw a glyph
float ngx = acc_x + (float)Math.Round(glyphPlan.OffsetX * scale);
float ngy = acc_y + (float)Math.Round(glyphPlan.OffsetY * scale);
g_x = (x + (ngx));
g_y = (y + (ngy));
acc_x += (float)Math.Round(glyphPlan.AdvanceX * scale);
//g_x = (float)Math.Round(g_x);
g_y = (float)Math.Floor(g_y);
g.TranslateTransform(g_x, g_y);
if (FillBackground)
{
g.FillPath(_fillBrush, foundPath);
}
if (DrawOutline)
{
g.DrawPath(_outlinePen, foundPath);
}
//and then we reset back ***
g.TranslateTransform(-g_x, -g_y);
}
}
public void MeasureString(char[] str, int startAt, int len, int limitWidth, out int charFit, out int charFitWidth)
{
//measure string
if (str.Length < 1)
{
charFitWidth = 0;
}
_reusableMeasureBoxList.Clear(); //reset
float pxscale = _currentTypeface.CalculateScaleToPixelFromPointSize(_fontSizeInPts);
//NOET:at this moment, simple operation
//may not be simple...
//-------------------
//input string may contain more than 1 script lang
//user can parse it by other parser
//but in this code, we use our Typography' parser
//-------------------
//user must setup the CustomBreakerBuilder before use
int cur_startAt = startAt;
float accumW = 0;
foreach (BreakSpan breakSpan in BreakToLineSegments(str, startAt, len))
{
//measure string at specific px scale
_glyphLayout.Layout(str, breakSpan.startAt, breakSpan.len);
//
_reusableGlyphPlanList.Clear();
_glyphLayout.GenerateUnscaledGlyphPlans(_reusableGlyphPlanList);
//measure ...
//measure each glyph
//limit at specific width
int glyphCount = _reusableGlyphPlanList.Count;
float acc_x = 0; //accum_x
float acc_y = 0; //accum_y
float g_x = 0;
float g_y = 0;
float x = 0;
float y = 0;
for (int i = 0; i < glyphCount; ++i)
{
UnscaledGlyphPlan glyphPlan = _reusableGlyphPlanList[i];
float ngx = acc_x + (float)Math.Round(glyphPlan.OffsetX * pxscale);
float ngy = acc_y + (float)Math.Round(glyphPlan.OffsetY * pxscale);
//NOTE:
// -glyphData.TextureXOffset => restore to original pos
// -glyphData.TextureYOffset => restore to original pos
//--------------------------
g_x = (float)(x + (ngx)); //ideal x
g_y = (float)(y + (ngy));
float g_w = (float)Math.Round(glyphPlan.AdvanceX * pxscale);
acc_x += g_w;
//g_x = (float)Math.Round(g_x);
g_y = (float)Math.Floor(g_y);
float right = g_x + g_w;
if (right >= accumW)
{
//stop here at this glyph
charFit = i - 1;
//TODO: review this
charFitWidth = (int)System.Math.Round(accumW);
return;
}
else
{
accumW = right;
}
}
}
charFit = 0;
charFitWidth = 0;
}
public void DrawString(char[] buffer, int startAt, int len, double left, double top)
{
_vboBuilder.Clear();
_vboBuilder.SetTextureInfo(_glBmp.Width, _glBmp.Height, _glBmp.IsYFlipped, _pcx.OriginKind);
//
_pcx.FontFillColor = _painter.FontFillColor;
_pcx.LoadTexture(_glBmp);
//create temp buffer span that describe the part of a whole char buffer
TextBufferSpan textBufferSpan = new TextBufferSpan(buffer, startAt, len);
//ask text service to parse user input char buffer and create a glyph-plan-sequence (list of glyph-plan)
//with specific request font
GlyphPlanSequence glyphPlanSeq = _textServices.CreateGlyphPlanSeq(ref textBufferSpan, _font);
float px_scale = _px_scale;
//--------------------------
//TODO:
//if (x,y) is left top
//we need to adjust y again
float scaleFromTexture = 1;
TextureKind textureKind = _fontAtlas.TextureKind;
float g_left = 0;
float g_top = 0;
int baseLine = (int)Math.Round((float)top + _font.AscentInPixels);
int bottom = (int)Math.Round((float)top + _font.AscentInPixels - _font.DescentInPixels);
float acc_x = 0; //local accumulate x
float acc_y = 0; //local accumulate y
#if DEBUG
if (s_dbugShowMarkers)
{
if (s_dbugShowGlyphTexture)
{
//show original glyph texture at top
_pcx.DrawImage(_glBmp, 0, 0);
}
//draw red-line-marker for baseLine
_painter.StrokeColor = Color.Red;
_painter.DrawLine(left, baseLine, left + 200, baseLine);
//
//draw magenta-line-marker for bottom line
_painter.StrokeColor = Color.Magenta;
int bottomLine = (int)Math.Round((float)top + _font.LineSpacingInPixels);
_painter.DrawLine(left, bottomLine, left + 200, bottomLine);
//draw blue-line-marker for top line
_painter.StrokeColor = Color.Blue;
_painter.DrawLine(0, top, left + 200, top);
}
DrawingTechnique = s_dbugDrawTechnique; //for debug only
UseVBO = s_dbugUseVBO; //for debug only
#endif
int seqLen = glyphPlanSeq.Count;
for (int i = 0; i < seqLen; ++i)
{
UnscaledGlyphPlan glyph = glyphPlanSeq[i];
Typography.Rendering.TextureGlyphMapData glyphData;
if (!_fontAtlas.TryGetGlyphMapData(glyph.glyphIndex, out glyphData))
{
//if no glyph data, we should render a missing glyph ***
continue;
}
//--------------------------------------
//TODO: review precise height in float
//--------------------------------------
//paint src rect
//temp fix, glyph texture img is not flipped
//but the associate info is flipped => so
//we need remap exact Y from the image
Rectangle srcRect =
new Rectangle(glyphData.Left,
_glBmp.Height - (glyphData.Top + glyphData.Height),
glyphData.Width,
glyphData.Height);
//offset length from 'base-line'
float x_offset = acc_x + (float)Math.Round(glyph.OffsetX * px_scale - glyphData.TextureXOffset);
float y_offset = acc_y + (float)Math.Round(glyph.OffsetY * px_scale - glyphData.TextureYOffset) + srcRect.Height; //***
//NOTE:
// -glyphData.TextureXOffset => restore to original pos
// -glyphData.TextureYOffset => restore to original pos
//--------------------------
g_left = (float)(left + x_offset);
g_top = (float)(bottom - y_offset); //***
acc_x += (float)Math.Round(glyph.AdvanceX * px_scale);
//g_x = (float)Math.Round(g_x); //***
g_top = (float)Math.Floor(g_top);//adjust to integer num ***
#if DEBUG
if (s_dbugShowMarkers)
{
if (s_dbugShowGlyphTexture)
{
//draw yellow-rect-marker on original texture
_painter.DrawRectangle(srcRect.X, srcRect.Y, srcRect.Width, srcRect.Height, Color.Yellow);
}
//draw debug-rect box at target glyph position
_painter.DrawRectangle(g_left, g_top, srcRect.Width, srcRect.Height, Color.Black);
_painter.StrokeColor = Color.Blue; //restore
}
#endif
if (textureKind == TextureKind.Msdf)
{
_pcx.DrawSubImageWithMsdf(_glBmp,
ref srcRect,
g_left,
g_top,
scaleFromTexture);
}
else
{
switch (DrawingTechnique)
{
case GlyphTexturePrinterDrawingTechnique.Stencil:
if (UseVBO)
{
_vboBuilder.WriteVboToList(
ref srcRect,
g_left, g_top);
}
else
{
//stencil gray scale with fill-color
_pcx.DrawGlyphImageWithStecil(_glBmp,
ref srcRect,
g_left,
g_top,
scaleFromTexture);
}
break;
case GlyphTexturePrinterDrawingTechnique.Copy:
if (UseVBO)
{
_vboBuilder.WriteVboToList(
ref srcRect,
g_left, g_top);
}
else
{
_pcx.DrawSubImage(_glBmp,
ref srcRect,
g_left,
g_top,
1);
}
break;
case GlyphTexturePrinterDrawingTechnique.LcdSubPixelRendering:
if (UseVBO)
{
_vboBuilder.WriteVboToList(
ref srcRect,
g_left, g_top);
}
else
{
_pcx.DrawGlyphImageWithSubPixelRenderingTechnique2_GlyphByGlyph(
ref srcRect,
g_left,
g_top,
1);
}
break;
}
}
}
//-------------------------------------------
//
if (UseVBO)
{
switch (DrawingTechnique)
{
case GlyphTexturePrinterDrawingTechnique.Copy:
_pcx.DrawGlyphImageWithCopy_VBO(_vboBuilder);
break;
case GlyphTexturePrinterDrawingTechnique.LcdSubPixelRendering:
_pcx.DrawGlyphImageWithSubPixelRenderingTechnique3_DrawElements(_vboBuilder);
break;
case GlyphTexturePrinterDrawingTechnique.Stencil:
_pcx.DrawGlyphImageWithStecil_VBO(_vboBuilder);
break;
}
_vboBuilder.Clear();
}
}
void RenderAndShowMeasureBox()
{
bool flipY = chkFlipY.Checked;
//set some Gdi+ props...
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
g.Clear(Color.White);
Typography.OpenFont.Typeface typeface = _currentTextPrinter.Typeface;
Typography.OpenFont.TypefaceExtension2.UpdateAllCffGlyphBounds(typeface);
float pxscale = typeface.CalculateScaleToPixelFromPointSize(_currentTextPrinter.FontSizeInPoints);
int lineSpacing = (int)System.Math.Ceiling((double)typeface.CalculateLineSpacing(LineSpacingChoice.TypoMetric) * pxscale);
if (flipY)
{
//credit:
//http://stackoverflow.com/questions/1485745/flip-coordinates-when-drawing-to-control
g.ScaleTransform(1.0F, -1.0F); // Flip the Y-Axis
g.TranslateTransform(0.0F, -500); // Translate the drawing area accordingly
}
//--------------------------------
//textspan measurement sample
//--------------------------------
_currentTextPrinter.HintTechnique = (HintTechnique)lstHintList.SelectedItem;
_currentTextPrinter.PositionTechnique = (PositionTechnique)cmbPositionTech.SelectedItem;
_currentTextPrinter.UpdateGlyphLayoutSettings();
//render at specific pos
float x_pos = 0, y_pos = lineSpacing * 2;
char[] textBuffer = txtInputChar.Text.ToCharArray();
//Example 1: this is a basic draw sample
_currentTextPrinter.FillColor = Color.Black;
_currentTextPrinter.TargetGraphics = g;
_currentTextPrinter.DrawString(
textBuffer,
0,
textBuffer.Length,
x_pos,
y_pos
);
//
//--------------------------------------------------
//Example 2: print glyph plan to 'user' list-> then draw it (or hold it/ not draw)
//you can create you own class to hold userGlyphPlans.***
//2.1
_reusableUnscaledGlyphPlanList.Clear();
_currentTextPrinter.GenerateGlyphPlan(textBuffer, 0, textBuffer.Length, _reusableUnscaledGlyphPlanList);
//2.2
//and we can print the formatted glyph plan later.
y_pos -= lineSpacing;//next line
_currentTextPrinter.FillColor = Color.Red;
_currentTextPrinter.DrawFromGlyphPlans(
new GlyphPlanSequence(_reusableUnscaledGlyphPlanList),
x_pos,
y_pos
);
//Example 3: MeasureString
UnscaledGlyphPlanList glyphPlans = new UnscaledGlyphPlanList();
_currentTextPrinter.GlyphLayoutMan.GenerateUnscaledGlyphPlans(glyphPlans);
MeasuredStringBox strBox = _currentTextPrinter.GlyphLayoutMan.LayoutAndMeasureString(
textBuffer, 0, textBuffer.Length,
_currentTextPrinter.FontSizeInPoints);
int j = glyphPlans.Count;
float backup_xpos = x_pos;
for (int i = 0; i < j; ++i)
{
UnscaledGlyphPlan glyphPlan = glyphPlans[i];
Typography.OpenFont.Glyph glyph = typeface.GetGlyphByIndex(glyphPlan.glyphIndex);
//
Typography.OpenFont.Bounds b = glyph.Bounds;
//
float xmin = b.XMin * pxscale;
float ymin = b.YMin * pxscale;
//
float xmax = b.XMax * pxscale;
float ymax = b.YMax * pxscale;
//
float glyph_x = x_pos + glyphPlan.OffsetX;
g.DrawRectangle(Pens.Red, glyph_x + xmin, y_pos + ymin, xmax - xmin, ymax - ymin);
x_pos += glyphPlan.AdvanceX * pxscale;
}
x_pos = backup_xpos;
g.FillRectangle(Brushes.Red, new RectangleF(0, 0, 5, 5));//reference point(0,0)
g.FillRectangle(Brushes.Green, new RectangleF(x_pos, y_pos, 3, 3));
float x_pos2 = x_pos + strBox.width + 10;
g.DrawRectangle(Pens.Black, x_pos, y_pos + strBox.DescendingInPx, strBox.width, strBox.ClipHeightInPx);
g.DrawRectangle(Pens.Red, x_pos, y_pos + strBox.DescendingInPx, strBox.width, strBox.LineSpaceInPx);
g.DrawLine(Pens.Blue, x_pos, y_pos, x_pos2, y_pos); //baseline
g.DrawLine(Pens.Green, x_pos, y_pos + strBox.DescendingInPx, x_pos2, y_pos + strBox.DescendingInPx); //descending
g.DrawLine(Pens.Magenta, x_pos, y_pos + strBox.AscendingInPx, x_pos2, y_pos + strBox.AscendingInPx); //ascending
////------------
////draw another line (for reference)
y_pos -= lineSpacing;//next line
_currentTextPrinter.FillColor = Color.Black;
_currentTextPrinter.DrawFromGlyphPlans(
new GlyphPlanSequence(_reusableUnscaledGlyphPlanList),
x_pos,
y_pos
);
//transform back
if (flipY)
{
g.ScaleTransform(1.0F, -1.0F); // Flip the Y-Axis
g.TranslateTransform(0.0F, -500); // Translate the drawing area accordingly
}
//---------
//txtMsgInfo.Text = "choice:" + choice.ToString() + "=" + lineSpacing.ToString();
}
public void DrawString(Painter p, char[] buffer, int startAt, int len, double x, double y)
{
//if (_stencilBmp == null)
//{
// //create a stencil bmp
// _stencilBmp = new ActualBitmap(p.Width, p.Height);
// _stencilBlender = new PixelProcessing.SubBitmapBlender(_stencilBmp, new PixelProcessing.PixelBlenderBGRA());
// _backPainter = AggPainter.Create(_stencilBmp);
// //------
//}
int j = buffer.Length;
//create temp buffer span that describe the part of a whole char buffer
var textBufferSpan = new Typography.Text.TextBufferSpan(buffer, startAt, len);
//ask text service to parse user input char buffer and create a glyph-plan-sequence (list of glyph-plan)
//with specific request font
GlyphPlanSequence glyphPlanSeq = _txtClient.CreateGlyphPlanSeq(textBufferSpan, _font);
ResolvedFont resolvedFont = _textServices.ResolveFont(_font);
Typeface typeface = resolvedFont.Typeface;
float scale = typeface.CalculateScaleToPixelFromPointSize(_font.SizeInPoints);
int recommendLineSpacing = resolvedFont.LineSpacingInPixels;
//--------------------------
//TODO:
//if (x,y) is left top
//we need to adjust y again
y -= resolvedFont.LineSpacingInPixels;
//
float scaleFromTexture = _finalTextureScale;
TextureKind textureKind = _fontAtlas.TextureKind;
float g_x = 0;
float g_y = 0;
int baseY = (int)Math.Round(y);
//-------------------------------------
//load texture
//_pcx.LoadTexture1(_glBmp);
//-------------------------------------
float acc_x = 0;
float acc_y = 0;
p.DrawImage(_fontBmp, 100, 100);
int seqLen = glyphPlanSeq.Count;
for (int i = 0; i < seqLen; ++i)
{
UnscaledGlyphPlan glyph = glyphPlanSeq[i];
AtlasItem glyphData;
if (!_fontAtlas.TryGetItem(glyph.glyphIndex, out glyphData))
{
//if no glyph data, we should render a missing glyph ***
continue;
}
//--------------------------------------
//TODO: review precise height in float
//--------------------------------------
int srcX, srcY, srcW, srcH;
glyphData.GetRect(out srcX, out srcY, out srcW, out srcH);
float ngx = acc_x + (float)Math.Round(glyph.OffsetX * scale);
float ngy = acc_y + (float)Math.Round(glyph.OffsetY * scale);
//NOTE:
// -glyphData.TextureXOffset => restore to original pos
// -glyphData.TextureYOffset => restore to original pos
//--------------------------
g_x = (float)(x + (ngx - glyphData.TextureXOffset) * scaleFromTexture); //ideal x
g_y = (float)(y + (ngy - glyphData.TextureYOffset + srcH) * scaleFromTexture);
acc_x += (float)Math.Round(glyph.AdvanceX * scale);
//g_x = (float)Math.Round(g_x);
g_y = (float)Math.Floor(g_y);
p.DrawImage(_fontBmp, g_x, g_y, srcX, srcY, srcW, srcH);
}
//-------
//we create vbo first
//then render
}
void RenderAndShowMeasureBox()
{
bool flipY = chkFlipY.Checked;
//set some Gdi+ props...
_g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
_g.Clear(Color.White);
Typography.OpenFont.Typeface typeface = _currentTextPrinter.Typeface;
Typography.OpenFont.Extensions.TypefaceExtensions.UpdateAllCffGlyphBounds(typeface);
float pxscale = typeface.CalculateScaleToPixelFromPointSize(_currentTextPrinter.FontSizeInPoints);
int lineSpacing = (int)System.Math.Ceiling((double)typeface.CalculateLineSpacing(LineSpacingChoice.TypoMetric) * pxscale);
if (flipY)
{
//credit:
//http://stackoverflow.com/questions/1485745/flip-coordinates-when-drawing-to-control
_g.ScaleTransform(1.0F, -1.0F); // Flip the Y-Axis
_g.TranslateTransform(0.0F, -500); // Translate the drawing area accordingly
}
//--------------------------------
//textspan measurement sample
//--------------------------------
_currentTextPrinter.HintTechnique = (HintTechnique)lstHintList.SelectedItem;
_currentTextPrinter.PositionTechnique = (PositionTechnique)cmbPositionTech.SelectedItem;
_currentTextPrinter.UpdateGlyphLayoutSettings();
//render at specific pos
float x_pos = 0, y_pos = lineSpacing * 2;
char[] textBuffer = txtInputChar.Text.ToCharArray();
//Example 1: this is a basic draw sample
_currentTextPrinter.FillColor = Color.Black;
_currentTextPrinter.TargetGraphics = _g;
//_currentTextPrinter.DrawString(
// textBuffer,
// 0,
// textBuffer.Length,
// x_pos,
// y_pos
// );
//
//--------------------------------------------------
//Example 2: print glyph plan to 'user' list-> then draw it (or hold it/ not draw)
//you can create you own class to hold userGlyphPlans.***
//2.1
if (chkEnableMultiTypefaces.Checked)
{
_ftmGlyphPlansList.Clear();
_currentTextPrinter.GenerateGlyphPlans(textBuffer, 0, textBuffer.Length, _ftmGlyphPlansList);
//2.2
//and we can print the formatted glyph plan later.
y_pos -= lineSpacing;//next line
_currentTextPrinter.FillColor = Color.Red;
_currentTextPrinter.DrawFromFormattedGlyphPlans(
_ftmGlyphPlansList,
x_pos,
y_pos
);
//--------------------------------------------------
//Example 3: MeasureString
//3.1 use data in formatted_glyph_plan_list to measure string => OK, OR
//3.2 use another 'light-weight' text printer to measure string (without drawing actual string)
//3.1
_currentTextPrinter.MeasureGlyphPlanList(_ftmGlyphPlansList, out int measureWidth);
_g.DrawRectangle(Pens.Red, x_pos, y_pos, measureWidth, 30);
float baseline = y_pos;
//3.2 draw each glyph bounds
{
int m = _ftmGlyphPlansList.Count;
for (int i = 0; i < m; ++i)
{
FormattedGlyphPlanSeq seq = _ftmGlyphPlansList[i];
ResolvedFont resolvedFont = seq.ResolvedFont;
Typeface localTypeface = resolvedFont.Typeface;
pxscale = resolvedFont.GetScaleToPixelFromPointInSize();
GlyphPlanSequence glyph_seq = seq.Seq;
var snapToPxScale = new GlyphPlanSequenceSnapPixelScaleLayout(seq.Seq, 0, glyph_seq.Count, pxscale);
x_pos += (resolvedFont.WhitespaceWidth * seq.PrefixWhitespaceCount);
int nn = 0;///
while (snapToPxScale.Read())
{
//float cx = (float)Math.Round(snapToPxScale.ExactX + x_pos);
//float cy = (float)Math.Floor(snapToPxScale.ExactY + baseline);
UnscaledGlyphPlan glyphPlan = glyph_seq[nn];
Glyph glyph = localTypeface.GetGlyph(glyphPlan.glyphIndex);
Bounds b = glyph.Bounds;
//
float xmin = b.XMin * pxscale;
float ymin = b.YMin * pxscale;
//
float xmax = b.XMax * pxscale;
float ymax = b.YMax * pxscale;
//
float glyph_x = x_pos + (glyphPlan.OffsetX * pxscale);
_g.DrawRectangle(Pens.Red, glyph_x + xmin, y_pos + ymin, xmax - xmin, ymax - ymin);
x_pos += glyphPlan.AdvanceX * pxscale;
nn++;
}
x_pos += (resolvedFont.WhitespaceWidth * seq.PostfixWhitespaceCount);
}
}
_ftmGlyphPlansList.Clear();
}
else
{
_reusableUnscaledGlyphPlanList.Clear();
_currentTextPrinter.GenerateGlyphPlans(textBuffer, 0, textBuffer.Length, _reusableUnscaledGlyphPlanList);
//2.2
//and we can print the formatted glyph plan later.
y_pos -= lineSpacing;//next line
_currentTextPrinter.FillColor = Color.Red;
//
GlyphPlanSequence seq = new GlyphPlanSequence(_reusableUnscaledGlyphPlanList);
_currentTextPrinter.DrawFromGlyphPlans(
seq,
x_pos,
y_pos
);
//--------------------------------------------------
//Example 3: MeasureString
float descending_px = _currentTextPrinter.FontDescedingPx;
float ascending_px = _currentTextPrinter.FontAscendingPx;
float lineSpacing_px = _currentTextPrinter.FontLineSpacingPx;
float clippedHeight_px = _currentTextPrinter.FontClipHeightPx;
_currentTextPrinter.MeasureGlyphPlanSeq(seq, out int textspanW);
UnscaledGlyphPlanList glyphPlans = new UnscaledGlyphPlanList();
_currentTextPrinter.GenerateGlyphPlans(textBuffer, 0, textBuffer.Length, glyphPlans);
int j = glyphPlans.Count;
float backup_xpos = x_pos;
for (int i = 0; i < j; ++i)
{
UnscaledGlyphPlan glyphPlan = glyphPlans[i];
Glyph glyph = typeface.GetGlyph(glyphPlan.glyphIndex);
//
Bounds b = glyph.Bounds;
//
float xmin = b.XMin * pxscale;
float ymin = b.YMin * pxscale;
//
float xmax = b.XMax * pxscale;
float ymax = b.YMax * pxscale;
//
float glyph_x = x_pos + (glyphPlan.OffsetX * pxscale);
_g.DrawRectangle(Pens.Red, glyph_x + xmin, y_pos + ymin, xmax - xmin, ymax - ymin);
x_pos += glyphPlan.AdvanceX * pxscale;
}
x_pos = backup_xpos;
_g.FillRectangle(Brushes.Red, new RectangleF(0, 0, 5, 5));//reference point(0,0)
_g.FillRectangle(Brushes.Green, new RectangleF(x_pos, y_pos, 3, 3));
float x_pos2 = x_pos + textspanW + 10;
_g.DrawRectangle(Pens.Black, x_pos, y_pos + descending_px, textspanW, clippedHeight_px);
_g.DrawRectangle(Pens.Red, x_pos, y_pos + descending_px, textspanW, lineSpacing_px);
_g.DrawLine(Pens.Blue, x_pos, y_pos, x_pos2, y_pos); //baseline
_g.DrawLine(Pens.Green, x_pos, y_pos + descending_px, x_pos2, y_pos + descending_px); //descending
_g.DrawLine(Pens.Magenta, x_pos, y_pos + ascending_px, x_pos2, y_pos + ascending_px); //ascending
////------------
////draw another line (for reference)
y_pos -= lineSpacing;//next line
_currentTextPrinter.FillColor = Color.Black;
_currentTextPrinter.DrawFromGlyphPlans(
new GlyphPlanSequence(_reusableUnscaledGlyphPlanList),
x_pos,
y_pos
);
}
//transform back
if (flipY)
{
_g.ScaleTransform(1.0F, -1.0F); // Flip the Y-Axis
_g.TranslateTransform(0.0F, -500); // Translate the drawing area accordingly
}
//---------
//txtMsgInfo.Text = "choice:" + choice.ToString() + "=" + lineSpacing.ToString();
}
private void button3_Click(object sender, EventArgs e)
{
//it should be faster if we use 'mesh' cache
//instead of read-transform it every time like code above(button2_click)
LoadFont();
float font_size_in_Point = 20;
_glyphMeshStore.SetFont(_latinModernMathFont, font_size_in_Point);//20= font size
_glyphMeshStore.FlipGlyphUpward = true;
float px_scale = _latinModernMathFont.CalculateScaleToPixelFromPointSize(font_size_in_Point);
using (Tools.BorrowAggPainter(_memBmp, out var p))
{
p.Clear(PixelFarm.Drawing.Color.White);
float prevX = p.OriginX;
float prevY = p.OriginY;
int line_left = 10;
int line_top = 50;
p.SetOrigin(line_left, line_top);//*** test
//draw reference point
p.FillRect(0, 0, 5, 5, PixelFarm.Drawing.Color.Red);
char[] test_str = "‽_x‾".ToCharArray();
int inline_left = 0;
int inline_top = 0;
//----------
GlyphLayout glyphLayout = new GlyphLayout();
glyphLayout.ScriptLang = new ScriptLang("math");
glyphLayout.Typeface = _latinModernMathFont;
//temp fix for some typeface
glyphLayout.SetGlyphIndexNotFoundHandler((glyph_layout, codepoint, next_codepoint) =>
{
switch (codepoint)
{
//overline unicode
case 8254: return(2246); //overline-combine, this will break into 3 parts in math layout process
}
return(0);
});
//
glyphLayout.Layout(test_str, 0, test_str.Length);
List <UnscaledGlyphPlan> glyphPlans = new List <UnscaledGlyphPlan>();
foreach (UnscaledGlyphPlan glypyPlan in glyphLayout.GetUnscaledGlyphPlanIter())
{
glyphPlans.Add(glypyPlan);
}
//--------
for (int i = 0; i < glyphPlans.Count; ++i)
{
//ushort glyphIndex = _latinModernMathFont.GetGlyphIndex((int)test_str[i]);
////do some glyph-substitution
//ushort advW = _latinModernMathFont.GetAdvanceWidth((int)test_str[i]);//unscale glyph width
//now scale it to specific font size
UnscaledGlyphPlan glyphPlan = glyphPlans[i];
int advW_s = (int)System.Math.Round(px_scale * glyphPlan.AdvanceX);
VertexStore v1 = _glyphMeshStore.GetGlyphMesh(glyphPlan.glyphIndex);
p.SetOrigin(line_left + inline_left, line_top + inline_top);
p.Fill(v1, PixelFarm.Drawing.Color.Black);
inline_left += advW_s;//move
}
//restore
p.SetOrigin(prevX, prevY);
}
//-----------
CopyBitmapToScreen();
}
public override void DrawFromGlyphPlans(GlyphPlanSequence glyphPlanSeq, int startAt, int len, float left, float top)
{
Typeface typeface = _textServices.ResolveTypeface(_font);
float scale = typeface.CalculateScaleToPixelFromPointSize(_font.SizeInPoints);
int recommendLineSpacing = (int)_font.LineSpacingInPixels;
//--------------------------
//TODO:
//if (x,y) is left top
//we need to adjust y again
//
TextureKind textureKind = _fontAtlas.TextureKind;
float gx = 0;
float gy = 0;
int baseY = (int)Math.Round(top);
float acc_x = 0;
float acc_y = 0;
int lineHeight = (int)_font.LineSpacingInPixels; //temp
PixelBlender32 prevPxBlender = _painter.DestBitmapBlender.OutputPixelBlender; //save
_painter.DestBitmapBlender.OutputPixelBlender = _maskPixelBlenderPerCompo; //change to new blender
bool fillGlyphByGlyph = true;
if (fillGlyphByGlyph)
{
//test...
//fill glyph-by-glyh
var aaTech = this.AntialiasTech;
int seqLen = glyphPlanSeq.Count;
for (int i = 0; i < seqLen; ++i)
{
UnscaledGlyphPlan unscaledGlyphPlan = glyphPlanSeq[i];
TextureGlyphMapData glyphData;
if (!_fontAtlas.TryGetGlyphMapData(unscaledGlyphPlan.glyphIndex, out glyphData))
{
//if no glyph data, we should render a missing glyph ***
continue;
}
//--------------------------------------
//TODO: review precise height in float
//--------------------------------------
int srcX, srcY, srcW, srcH;
glyphData.GetRect(out srcX, out srcY, out srcW, out srcH);
float ngx = acc_x + (float)Math.Round(unscaledGlyphPlan.OffsetX * scale);
float ngy = acc_y + (float)Math.Round(unscaledGlyphPlan.OffsetY * scale);
//NOTE:
// -glyphData.TextureXOffset => restore to original pos
// -glyphData.TextureYOffset => restore to original pos
//--------------------------
//if (glyphData.TextureXOffset != 0)
//{
//}
gx = (float)(left + (ngx - glyphData.TextureXOffset)); //ideal x
gy = (float)(top + (ngy + glyphData.TextureYOffset - srcH + lineHeight));
acc_x += (float)Math.Round(unscaledGlyphPlan.AdvanceX * scale);
gy = (float)Math.Floor(gy);// + lineHeight;
//clear with solid black color
//_maskBufferPainter.Clear(Color.Black);
//clear mask buffer at specific pos
_maskBufferPainter.FillRect(gx - 1, gy - 1, srcW + 2, srcH + 2, Color.Black);
//draw 'stencil' glyph on mask-buffer
_maskBufferPainter.DrawImage(_fontBmp, gx, gy, srcX, _fontBmp.Height - (srcY + srcH), srcW, srcH);
switch (aaTech)
{
default:
{
//select component to render this need to render 3 times for lcd technique
//1. B
_maskPixelBlenderPerCompo.SelectedMaskComponent = PixelBlenderColorComponent.B;
_maskPixelBlenderPerCompo.EnableOutputColorComponent = EnableOutputColorComponent.B;
_painter.FillRect(gx + 1, gy, srcW, srcH);
//2. G
_maskPixelBlenderPerCompo.SelectedMaskComponent = PixelBlenderColorComponent.G;
_maskPixelBlenderPerCompo.EnableOutputColorComponent = EnableOutputColorComponent.G;
_painter.FillRect(gx + 1, gy, srcW, srcH);
//3. R
_maskPixelBlenderPerCompo.SelectedMaskComponent = PixelBlenderColorComponent.R;
_maskPixelBlenderPerCompo.EnableOutputColorComponent = EnableOutputColorComponent.R;
_painter.FillRect(gx + 1, gy, srcW, srcH);
}
break;
case AntialiasTechnique.GreyscaleStencil:
{
//fill once
//we choose greeh channel (middle)
_maskPixelBlenderPerCompo.SelectedMaskComponent = PixelBlenderColorComponent.G;
_maskPixelBlenderPerCompo.EnableOutputColorComponent = EnableOutputColorComponent.EnableAll;
_painter.FillRect(gx + 1, gy, srcW, srcH);
}
break;
}
}
}
else
{
//clear entire line
_maskBufferPainter.FillRect(gx - 1, gy - 1, _maskBufferPainter.Width - gx + 2, lineHeight + 2, Color.Black);
bool isFirst = true;
int startX = 0, startY = 0;
float lenW = 0;
float lenH = 0;
int seqLen = glyphPlanSeq.Count;
for (int i = 0; i < seqLen; ++i)
{
UnscaledGlyphPlan glyph = glyphPlanSeq[i];
TextureGlyphMapData glyphData;
if (!_fontAtlas.TryGetGlyphMapData(glyph.glyphIndex, out glyphData))
{
//if no glyph data, we should render a missing glyph ***
continue;
}
//--------------------------------------
//TODO: review precise height in float
//--------------------------------------
int srcX, srcY, srcW, srcH;
glyphData.GetRect(out srcX, out srcY, out srcW, out srcH);
float ngx = acc_x + (float)Math.Round(glyph.OffsetX * scale);
float ngy = acc_y + (float)Math.Round(glyph.OffsetY * scale);
//NOTE:
// -glyphData.TextureXOffset => restore to original pos
// -glyphData.TextureYOffset => restore to original pos
//--------------------------
gx = (float)(left + (ngx - glyphData.TextureXOffset)); //ideal x
gy = (float)(top + (ngy - glyphData.TextureYOffset - srcH + lineHeight));
acc_x += (float)Math.Round(glyph.AdvanceX * scale);
gy = (float)Math.Floor(gy) + lineHeight;
if (isFirst)
{
startX = (int)gx;
startY = (int)gy;
isFirst = false;
}
_maskBufferPainter.DrawImage(_fontBmp, gx + 1, gy, srcX, _fontBmp.Height - (srcY), srcW + 1, srcH);
lenW = gx + srcW;
if (srcH > lenH)
{
lenH = srcH;
}
}
//--------------------------
//fill color on 'stencil' mask
{
//select component to render this need to render 3 times for lcd technique
//1. B
_maskPixelBlenderPerCompo.SelectedMaskComponent = PixelBlenderColorComponent.B;
_maskPixelBlenderPerCompo.EnableOutputColorComponent = EnableOutputColorComponent.B;
_painter.FillRect(startX + 1, startY, lenW, lenH);
//2. G
_maskPixelBlenderPerCompo.SelectedMaskComponent = PixelBlenderColorComponent.G;
_maskPixelBlenderPerCompo.EnableOutputColorComponent = EnableOutputColorComponent.G;
_painter.FillRect(startX + 1, startY, lenW, lenH);
//3. R
_maskPixelBlenderPerCompo.SelectedMaskComponent = PixelBlenderColorComponent.R;
_maskPixelBlenderPerCompo.EnableOutputColorComponent = EnableOutputColorComponent.R;
_painter.FillRect(startX + 1, startY, lenW, lenH);
}
}
//
_painter.DestBitmapBlender.OutputPixelBlender = prevPxBlender;//restore back
}
private void cmdMeasureTextSpan_Click(object sender, System.EventArgs e)
{
//set some Gdi+ props...
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
g.Clear(Color.White);
//credit:
//http://stackoverflow.com/questions/1485745/flip-coordinates-when-drawing-to-control
g.ScaleTransform(1.0F, -1.0F); // Flip the Y-Axis
g.TranslateTransform(0.0F, -(float)300); // Translate the drawing area accordingly
//--------------------------------
//textspan measurement sample
//--------------------------------
_currentTextPrinter.HintTechnique = (HintTechnique)lstHintList.SelectedItem;
_currentTextPrinter.PositionTechnique = (PositionTechnique)cmbPositionTech.SelectedItem;
//render at specific pos
float x_pos = 0, y_pos = 100;
char[] textBuffer = txtInputChar.Text.ToCharArray();
//Example 1: this is a basic draw sample
_currentTextPrinter.FillColor = Color.Black;
_currentTextPrinter.TargetGraphics = g;
_currentTextPrinter.DrawString(
textBuffer,
0,
textBuffer.Length,
x_pos,
y_pos
);
//
//--------------------------------------------------
//Example 2: print glyph plan to 'user' list-> then draw it (or hold it/ not draw)
//you can create you own class to hold userGlyphPlans.***
//2.1
_reusableUnscaledGlyphPlanList.Clear();
_currentTextPrinter.GenerateGlyphPlan(textBuffer, 0, textBuffer.Length, _reusableUnscaledGlyphPlanList);
//2.2
//and we can print the formatted glyph plan later.
y_pos -= _currentTextPrinter.FontLineSpacingPx;
_currentTextPrinter.FillColor = Color.Red;
_currentTextPrinter.DrawFromGlyphPlans(
new GlyphPlanSequence(_reusableUnscaledGlyphPlanList),
x_pos,
y_pos
);
//Example 3: MeasureString
Typography.OpenFont.Typeface typeface = _currentTextPrinter.Typeface;
UnscaledGlyphPlanList userGlyphPlans = new UnscaledGlyphPlanList();
_currentTextPrinter.GlyphLayoutMan.GenerateUnscaledGlyphPlans(userGlyphPlans);
MeasuredStringBox strBox = new MeasuredStringBox();
throw new System.NotSupportedException();
//_currentTextPrinter.GlyphLayoutMan.LayoutAndMeasureString(
// textBuffer, 0, textBuffer.Length,
// _currentTextPrinter.FontSizeInPoints,
// true,
// userGlyphPlans);
float x_pos2 = x_pos + strBox.width + 10;
g.DrawRectangle(Pens.Red, x_pos, y_pos + strBox.descending, strBox.width, strBox.CalculateLineHeight());
g.DrawLine(Pens.Blue, x_pos, y_pos, x_pos2, y_pos); //baseline
g.DrawLine(Pens.Green, x_pos, y_pos + strBox.descending, x_pos2, y_pos + strBox.descending); //descending
g.DrawLine(Pens.Magenta, x_pos, y_pos + strBox.ascending, x_pos2, y_pos + strBox.ascending); //ascending
Typography.OpenFont.TypefaceExtension2.UpdateAllCffGlyphBounds(typeface);
float pxscale = typeface.CalculateScaleToPixelFromPointSize(_currentTextPrinter.FontSizeInPoints);
int j = userGlyphPlans.Count;
for (int i = 0; i < j; ++i)
{
UnscaledGlyphPlan glyphPlan = userGlyphPlans[i];
Typography.OpenFont.Glyph glyph = typeface.GetGlyphByIndex(glyphPlan.glyphIndex);
//
Typography.OpenFont.Bounds b = glyph.Bounds;
//
float xmin = b.XMin * pxscale;
float ymin = b.YMin * pxscale;
//
float xmax = b.XMax * pxscale;
float ymax = b.YMax * pxscale;
//
float glyph_x = x_pos + glyphPlan.OffsetX;
g.DrawRectangle(Pens.Red, glyph_x + xmin, y_pos + ymin, xmax - xmin, ymax - ymin);
}
//------------
_currentTextPrinter.FillColor = Color.Black;
//transform back
g.ScaleTransform(1.0F, -1.0F); // Flip the Y-Axis
g.TranslateTransform(0.0F, -(float)300); // Translate the drawing area accordingly
}
public void CalculateUserCharGlyphAdvancePos(ref TextBufferSpan textBufferSpan,
ILineSegmentList lineSegs, RequestFont font,
int[] outputUserInputCharAdvance, out int outputTotalW, out int lineHeight)
{
//layout
//from font
//resolve for typeface
//
Typeface typeface = ResolveTypeface(font);
_txtServices.SetCurrentFont(typeface, font.SizeInPoints);
MyLineSegmentList mylineSegs = (MyLineSegmentList)lineSegs;
float scale = typeface.CalculateScaleToPixelFromPointSize(font.SizeInPoints);
outputTotalW = 0;
int j = mylineSegs.Count;
int pos = 0; //start at 0
_reusableTextBuffer.SetRawCharBuffer(textBufferSpan.GetRawCharBuffer());
for (int i = 0; i < j; ++i)
{
//userGlyphPlanList.Clear();
//userCharToGlyphMapList.Clear();
//get each segment
MyLineSegment lineSeg = mylineSegs.GetSegment(i);
//each line seg may has different script lang
_txtServices.CurrentScriptLang = lineSeg.scriptLang;
//
//CACHING ...., reduce number of GSUB/GPOS
//
//we cache used line segment for a while
//we ask for caching context for a specific typeface and font size
GlyphPlanSequence seq = _txtServices.GetUnscaledGlyphPlanSequence(_reusableTextBuffer,
lineSeg.StartAt,
lineSeg.Length);
//IMPORTANT
//num of glyph may more or less than original user input char buffer
//
//float g_x = 0;
//float g_y = 0;
//int baseY = (int)Math.Round(y);
//int n = glyphPlanSeq.len;
//int endBefore = glyphPlanSeq.startAt + n;
////***
//_glsx.SetAssociatedTextureInfo(_glBmp);
//List<float> vboBufferList = new List<float>();
//List<ushort> indexList = new List<ushort>();
//for (int i = glyphPlanSeq.startAt; i < endBefore; ++i)
//{
// GlyphPlanList glyphPlanList = GlyphPlanSequence.UnsafeGetInteralGlyphPlanList(glyphPlanSeq);
// GlyphPlan glyph = glyphPlanList[i];
// Typography.Rendering.TextureGlyphMapData glyphData;
// if (!_fontAtlas.TryGetGlyphDataByCodePoint(glyph.glyphIndex, out glyphData))
// {
// //if no glyph data, we should render a missing glyph ***
// continue;
// }
// //if (scaleFromTexture != 1)
// //{
// //}
// //--------------------------------------
// //TODO: review precise height in float
// //--------------------------------------
// PixelFarm.Drawing.Rectangle srcRect = ConvToRect(glyphData.Rect);
// g_x = (float)(x + (glyph.ExactX * scale - glyphData.TextureXOffset) * scaleFromTexture); //ideal x
// g_y = (float)(y + (glyph.ExactY * scale - glyphData.TextureYOffset + srcRect.Height) * scaleFromTexture);
// //for sharp glyph
// //we adjust g_x,g_y to integer value
// //float g_y2 = (float)Math.Floor(g_y);
// g_x = (float)Math.Round(g_x);
// g_y = (float)Math.Floor(g_y);
// switch (textureKind)
// {
// case TextureKind.Msdf:
// _glsx.DrawSubImageWithMsdf(_glBmp,
// ref srcRect,
// g_x,
// g_y,
// scaleFromTexture);
// break;
// case TextureKind.StencilGreyScale:
// //stencil gray scale with fill-color
// _glsx.DrawGlyphImageWithStecil(_glBmp,
// ref srcRect,
// g_x,
// g_y,
// scaleFromTexture);
// break;
// case TextureKind.Bitmap:
// _glsx.DrawSubImage(_glBmp,
// ref srcRect,
// g_x,
// g_y,
// scaleFromTexture);
// break;
// case TextureKind.StencilLcdEffect:
// _glsx.WriteVboToList(
// vboBufferList,
// indexList,
// ref srcRect,
// g_x,
// g_y,
// scaleFromTexture);
// break;
// }
//}
////---------
int seqLen = seq.Count;
for (int s = 0; s < seqLen; ++s)
{
UnscaledGlyphPlan glyphPlan = seq[s];
double actualAdvX = glyphPlan.AdvanceX;
outputTotalW +=
outputUserInputCharAdvance[pos + glyphPlan.input_cp_offset] +=
(int)Math.Round(actualAdvX * scale);
}
pos += lineSeg.Length;
}
//
lineHeight = (int)Math.Round(typeface.CalculateRecommendLineSpacing() * scale);
_reusableTextBuffer.SetRawCharBuffer(null);
}
public void Append(UnscaledGlyphPlan glyphPlan)
{
_glyphPlans.Add(glyphPlan);
}
public void PrepareStringForRenderVx(GLRenderVxFormattedString renderVxFormattedString, char[] buffer, int startAt, int len)
{
int top = 0; //simulate top
int left = 0; //simulate left
_vboBuilder.Clear();
_vboBuilder.SetTextureInfo(_glBmp.Width, _glBmp.Height, _glBmp.IsYFlipped, _pcx.OriginKind);
//create temp buffer span that describe the part of a whole char buffer
TextBufferSpan textBufferSpan = new TextBufferSpan(buffer, startAt, len);
//ask text service to parse user input char buffer and create a glyph-plan-sequence (list of glyph-plan)
//with specific request font
GlyphPlanSequence glyphPlanSeq = _textServices.CreateGlyphPlanSeq(ref textBufferSpan, _font);
float px_scale = _px_scale;
//--------------------------
TextureKind textureKind = _fontAtlas.TextureKind;
float g_left = 0;
float g_top = 0;
int baseLine = (int)Math.Round((float)top + _font.AscentInPixels);
int bottom = (int)Math.Round((float)top + _font.AscentInPixels - _font.DescentInPixels);
float acc_x = 0; //local accumulate x
float acc_y = 0; //local accumulate y
int seqLen = glyphPlanSeq.Count;
for (int i = 0; i < seqLen; ++i)
{
UnscaledGlyphPlan glyph = glyphPlanSeq[i];
Typography.Rendering.TextureGlyphMapData glyphData;
if (!_fontAtlas.TryGetGlyphMapData(glyph.glyphIndex, out glyphData))
{
//if no glyph data, we should render a missing glyph ***
continue;
}
//--------------------------------------
//TODO: review precise height in float
//--------------------------------------
//paint src rect
//temp fix, glyph texture img is not flipped
//but the associate info is flipped => so
//we need remap exact Y from the image
Rectangle srcRect =
new Rectangle(glyphData.Left,
_glBmp.Height - (glyphData.Top + glyphData.Height),
glyphData.Width,
glyphData.Height);
//offset length from 'base-line'
float x_offset = acc_x + (float)Math.Round(glyph.OffsetX * px_scale - glyphData.TextureXOffset);
float y_offset = acc_y + (float)Math.Round(glyph.OffsetY * px_scale - glyphData.TextureYOffset) + srcRect.Height; //***
//NOTE:
// -glyphData.TextureXOffset => restore to original pos
// -glyphData.TextureYOffset => restore to original pos
//--------------------------
g_left = (float)(left + x_offset);
g_top = (float)(bottom - y_offset); //***
acc_x += (float)Math.Round(glyph.AdvanceX * px_scale);
//g_x = (float)Math.Round(g_x); //***
g_top = (float)Math.Floor(g_top);//adjust to integer num ***
//
_vboBuilder.WriteVboToList(ref srcRect, g_left, g_top);
}
//---
//copy vbo result and store into renderVx
float[] vertexList = _vboBuilder._buffer.ToArray();
ushort[] indexList = _vboBuilder._indexList.ToArray();
//---
renderVxFormattedString.IndexArrayCount = _vboBuilder._indexList.Count;
renderVxFormattedString.IndexArray = _vboBuilder._indexList.ToArray();
renderVxFormattedString.VertexCoords = _vboBuilder._buffer.ToArray();
_vboBuilder.Clear();
}
public void DrawString(Painter p, char[] buffer, int startAt, int len, double x, double y)
{
AggPainter painter = p as AggPainter;
if (painter == null)
{
return;
}
//
int width = painter.Width;
int height = painter.Height;
if (!_pixelBlenderSetup)
{
SetupMaskPixelBlender(width, height);
_pixelBlenderSetup = true;
}
int j = buffer.Length;
//create temp buffer span that describe the part of a whole char buffer
TextBufferSpan textBufferSpan = new TextBufferSpan(buffer, startAt, len);
//ask text service to parse user input char buffer and create a glyph-plan-sequence (list of glyph-plan)
//with specific request font
GlyphPlanSequence glyphPlanSeq = _textServices.CreateGlyphPlanSeq(ref textBufferSpan, _font);
float scale = 1;// _fontAtlas.TargetTextureScale;
int recommendLineSpacing = (int)_font.LineSpacingInPixels;
//--------------------------
//TODO:
//if (x,y) is left top
//we need to adjust y again
y -= _font.LineSpacingInPixels;
//
float scaleFromTexture = _finalTextureScale;
TextureKind textureKind = _fontAtlas.TextureKind;
float gx = 0;
float gy = 0;
int baseY = (int)Math.Round(y);
float acc_x = 0;
float acc_y = 0;
int lineHeight = (int)_font.LineSpacingInPixels;//temp
//painter.DestBitmapBlender.OutputPixelBlender = maskPixelBlenderPerCompo; //change to new blender
painter.DestBitmapBlender.OutputPixelBlender = _maskPixelBlenderPerCompo; //change to new blender
int seqLen = glyphPlanSeq.Count;
for (int i = 0; i < seqLen; ++i)
{
UnscaledGlyphPlan glyph = glyphPlanSeq[i];
TextureGlyphMapData glyphData;
if (!_fontAtlas.TryGetGlyphMapData(glyph.glyphIndex, out glyphData))
{
//if no glyph data, we should render a missing glyph ***
continue;
}
//--------------------------------------
//TODO: review precise height in float
//--------------------------------------
int srcX, srcY, srcW, srcH;
glyphData.GetRect(out srcX, out srcY, out srcW, out srcH);
float ngx = acc_x + (float)Math.Round(glyph.OffsetX * scale);
float ngy = acc_y + (float)Math.Round(glyph.OffsetY * scale);
//NOTE:
// -glyphData.TextureXOffset => restore to original pos
// -glyphData.TextureYOffset => restore to original pos
//--------------------------
gx = (float)(x + (ngx - glyphData.TextureXOffset) * scaleFromTexture); //ideal x
gy = (float)(y + (ngy - glyphData.TextureYOffset - srcH + lineHeight) * scaleFromTexture);
acc_x += (float)Math.Round(glyph.AdvanceX * scale);
gy = (float)Math.Floor(gy) + lineHeight;
//clear with solid black color
//_maskBufferPainter.Clear(Color.Black);
_maskBufferPainter.FillRect(gx - 1, gy - 1, srcW + 2, srcH + 2, Color.Black);
//draw 'stencil' glyph on mask-buffer
_maskBufferPainter.DrawImage(_fontBmp, gx, gy, srcX, _fontBmp.Height - (srcY), srcW, srcH);
//select component to render this need to render 3 times for lcd technique
//1. B
_maskPixelBlenderPerCompo.SelectedMaskComponent = PixelBlenderColorComponent.B;
_maskPixelBlenderPerCompo.EnableOutputColorComponent = EnableOutputColorComponent.B;
painter.FillRect(gx + 1, gy, srcW, srcH);
//2. G
_maskPixelBlenderPerCompo.SelectedMaskComponent = PixelBlenderColorComponent.G;
_maskPixelBlenderPerCompo.EnableOutputColorComponent = EnableOutputColorComponent.G;
painter.FillRect(gx + 1, gy, srcW, srcH);
//3. R
_maskPixelBlenderPerCompo.SelectedMaskComponent = PixelBlenderColorComponent.R;
_maskPixelBlenderPerCompo.EnableOutputColorComponent = EnableOutputColorComponent.R;
painter.FillRect(gx + 1, gy, srcW, srcH);
}
}
public override void DrawFromGlyphPlans(UnscaledGlyphPlanList glyphPlanList, int startAt, int len, float x, float y)
{
Painter painter = this.TargetCanvasPainter;
if (StartDrawOnLeftTop)
{
//version 2
//offset y down
y += this.FontLineSpacingPx;
}
//Typeface typeface = _glyphPathBuilder.Typeface;
//3. layout glyphs with selected layout technique
//TODO: review this again, we should use pixel?
float fontSizePoint = this.FontSizeInPoints;
float scale = _currentTypeface.CalculateScaleToPixelFromPointSize(fontSizePoint);
//4. render each glyph
float ox = painter.OriginX;
float oy = painter.OriginY;
int endBefore = startAt + len;
Typography.OpenFont.Tables.COLR colrTable = _currentTypeface.COLRTable;
Typography.OpenFont.Tables.CPAL cpalTable = _currentTypeface.CPALTable;
bool hasColorGlyphs = (colrTable != null) && (cpalTable != null);
//---------------------------------------------------
_glyphMeshStore.SetFont(_currentTypeface, fontSizePoint);
//---------------------------------------------------
float g_x = 0;
float g_y = 0;
float baseY = (int)y;
if (!hasColorGlyphs)
{
bool savedUseLcdMode = painter.UseSubPixelLcdEffect; //save,restore later
RenderQualtity savedRederQuality = painter.RenderQuality;
painter.RenderQuality = RenderQualtity.HighQuality;
painter.UseSubPixelLcdEffect = true;
Agg.Transform.Affine flipY = Agg.Transform.Affine.NewMatix(
Agg.Transform.AffinePlan.Scale(1, -1)); //flip Y
VertexStore reusableVxs = new VertexStore();
float acc_x = 0; //acummulate x
float acc_y = 0; //acummulate y
for (int i = startAt; i < endBefore; ++i)
{ //-----------------------------------
//TODO: review here ***
//PERFORMANCE revisit here
//if we have create a vxs we can cache it for later use?
//-----------------------------------
UnscaledGlyphPlan glyphPlan = glyphPlanList[i];
float ngx = acc_x + (float)Math.Round(glyphPlan.OffsetX * scale);
float ngy = acc_y + (float)Math.Round(glyphPlan.OffsetY * scale);
acc_x += (float)Math.Round(glyphPlan.AdvanceX * scale);
g_x = ngx;
g_y = ngy;
painter.SetOrigin(g_x, g_y);
//-----------------------------------
//invert each glyph
//version 3:
reusableVxs.Clear();
VertexStore vxs = _glyphMeshStore.GetGlyphMesh(glyphPlan.glyphIndex);
flipY.TransformToVxs(vxs, reusableVxs);
painter.Fill(reusableVxs);
//version2;
//VertexStore vsx = _glyphMeshStore.GetGlyphMesh(glyphPlan.glyphIndex);
//_vxs1 = _invertY.TransformToVxs(vsx, _vxs1);
//painter.Fill(_vxs1);
//_vxs1.Clear();
//version1
//painter.Fill(_glyphMeshStore.GetGlyphMesh(glyphPlan.glyphIndex));
}
//restore
painter.RenderQuality = savedRederQuality;
painter.UseSubPixelLcdEffect = savedUseLcdMode;
}
else
{
//-------------
//this glyph has color information
//-------------
Color originalFillColor = painter.FillColor;
float acc_x = 0;
float acc_y = 0;
for (int i = startAt; i < endBefore; ++i)
{
UnscaledGlyphPlan glyphPlan = glyphPlanList[i];
float ngx = acc_x + (float)Math.Round(glyphPlan.OffsetX * scale);
float ngy = acc_y + (float)Math.Round(glyphPlan.OffsetY * scale);
g_x = ngx;
g_y = ngy;
acc_x += (float)Math.Round(glyphPlan.AdvanceX * scale);
painter.SetOrigin(g_x, g_y);
//-----------------------------------
ushort colorLayerStart;
if (colrTable.LayerIndices.TryGetValue(glyphPlan.glyphIndex, out colorLayerStart))
{
//TODO: optimize this
//we found color info for this glyph
ushort colorLayerCount = colrTable.LayerCounts[glyphPlan.glyphIndex];
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(glyphPlan.glyphIndex));
}
}
painter.FillColor = originalFillColor; //restore color
}
//restore prev origin
painter.SetOrigin(ox, oy);
}
