Size CalculateDrawingStringSize(int length)
{
if (!_content_unparsed)
{
//the content is parsed ***
if (_mybuffer.Length == length)
{
return(this.Size);
}
else
{
//ca
int total = 0;
if (_outputUserCharAdvances != null)
{
for (int i = 0; i < length; ++i)
{
total += _outputUserCharAdvances[i];
}
}
return(new Size(total, (int)Math.Round(Root.TextServices.MeasureBlankLineHeight(GetFont()))));
}
}
var textBufferSpan = new TextBufferSpan(_mybuffer, 0, length);
return(this.Root.TextServices.MeasureString(ref textBufferSpan, GetFont()));
}
//
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 Size MeasureString(ref TextBufferSpan textBufferSpan, RequestFont font)
{
Typeface typeface = ResolveTypeface(font);
_txtServices.SetCurrentFont(typeface, font.SizeInPoints);
_txtServices.MeasureString(textBufferSpan.GetRawCharBuffer(), textBufferSpan.start, textBufferSpan.len, out int w, out int h);
return(new Size(w, h));
}
public void MeasureString(char[] buffer, int startAt, int len, out int w, out int h)
{
TextBufferSpan textBufferSpan = new TextBufferSpan(buffer, startAt, len);
Size s = _textServices.MeasureString(ref textBufferSpan, _painter.CurrentFont);
w = s.Width;
h = s.Height;
}
void InternalDrawString(char[] buffer, int startAt, int len, float x, float y)
{
UpdateGlyphLayoutSettings();
//unscale layout, with design unit scale
TextBufferSpan buffSpan = new TextBufferSpan(buffer, startAt, len);
GlyphPlanSequence glyphPlanSeq = _textServices.CreateGlyphPlanSeq(ref buffSpan, _reqFont);
DrawFromGlyphPlans(glyphPlanSeq, x, y);
}
public void CalculateUserCharGlyphAdvancePos(ref TextBufferSpan textBufferSpan,
ILineSegmentList lineSegs,
RequestFont font,
int[] glyphXAdvances,
out int outputTotalW,
out int outputLineHeight)
{
throw new NotImplementedException();
}
public void MeasureString(ref TextBufferSpan textBufferSpan, RequestFont font, int limitWidth, out int charFit, out int charFitWidth)
{
Typeface typeface = ResolveTypeface(font);
_txtServices.SetCurrentFont(typeface, font.SizeInPoints);
charFit = 0;
_txtServices.MeasureString(textBufferSpan.GetRawCharBuffer(), textBufferSpan.start, textBufferSpan.len, limitWidth, out charFit, out charFitWidth);
}
void InternalDrawString(char[] buffer, int startAt, int len, float x, float y)
{
//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
DrawFromGlyphPlans(_textServices.CreateGlyphPlanSeq(ref textBufferSpan, _font), startAt, len, x, y);
}
public GlyphPlanSequence CreateGlyphPlanSeq(ref TextBufferSpan textBufferSpan, RequestFont font)
{
Typeface typeface = ResolveTypeface(font);
_txtServices.SetCurrentFont(typeface, font.SizeInPoints);
_reusableTextBuffer.SetRawCharBuffer(textBufferSpan.GetRawCharBuffer());
return(_txtServices.GetUnscaledGlyphPlanSequence(_reusableTextBuffer, textBufferSpan.start, textBufferSpan.len));
}
public void MeasureString(char[] buffer, int startAt, int len, out int w, out int h)
{
UpdateGlyphLayoutSettings();
_glyphMeshStore.SetFont(_currentTypeface, this.FontSizeInPoints);
_glyphMeshStore.SimulateOblique = this.SimulateSlant;
TextBufferSpan textBuffSpan = new TextBufferSpan(buffer, startAt, len);
Size s = _textServices.MeasureString(ref textBuffSpan, _painter.CurrentFont);
w = s.Width;
h = s.Height;
}
public override void UpdateRunWidth()
{
ITextService txServices = Root.TextServices;
Size size;
if (IsLineBreak)
{
//TODO: review here
//we should not store this as a text run
//if this is a linebreak it should be encoded at the end of this visual line
size = new Size(0, (int)Math.Round(txServices.MeasureBlankLineHeight(GetFont())));
_outputUserCharAdvances = null;
}
else
{
//TODO: review here again
//1. after GSUB process, output glyph may be more or less
//than original input char buffer(mybuffer)
if (txServices.SupportsWordBreak)
{
var textBufferSpan = new TextBufferSpan(_mybuffer);
int len = _mybuffer.Length;
if (_content_unparsed)
{
//parse the content first
_lineSegs = txServices.BreakToLineSegments(ref textBufferSpan);
}
//
_content_unparsed = false;
//output glyph position
_outputUserCharAdvances = new int[len];
int outputTotalW, outputLineHeight;
txServices.CalculateUserCharGlyphAdvancePos(ref textBufferSpan, _lineSegs, GetFont(),
_outputUserCharAdvances, out outputTotalW, out outputLineHeight);
size = new Size(outputTotalW, outputLineHeight);
}
else
{
_content_unparsed = false;
int len = _mybuffer.Length;
_outputUserCharAdvances = new int[len];
int outputTotalW, outputLineHeight;
var textBufferSpan = new TextBufferSpan(_mybuffer);
txServices.CalculateUserCharGlyphAdvancePos(ref textBufferSpan, GetFont(),
_outputUserCharAdvances, out outputTotalW, out outputLineHeight);
size = new Size(outputTotalW, outputLineHeight);
}
}
//---------
this.SetSize(size.Width, size.Height);
MarkHasValidCalculateSize();
}
public Typeface ResolveTypeface(RequestFont font)
{
//from user's request font
//resolve to actual Typeface
//get data from...
//cache level-1 (attached inside the request font)
Typeface typeface = PixelFarm.Drawing.Internal.RequestFontCacheAccess.GetActualFont <Typeface>(font, _system_id);
if (typeface != null)
{
return(typeface);
}
//
//cache level-2 (stored in this Ifonts)
if (!_resolvedTypefaceCache.TryGetValue(font.FontKey, out typeface))
{
//not found ask the typeface store to load that font
//....
typeface = _txtServices.GetTypeface(font.Name, font.Style.ConvToInstalledFontStyle());
if (typeface == null)
{
throw new NotSupportedException();
}
//
//cache here (level-1)
_resolvedTypefaceCache.Add(font.FontKey, typeface);
}
//and cache into level-0
float pxSize = Typeface.ConvPointsToPixels(font.SizeInPoints);
float pxscale = typeface.CalculateScaleToPixelFromPointSize(font.SizeInPoints);
float recommedLineSpacingInPx = typeface.CalculateRecommendLineSpacing() * pxscale;
float descentInPx = typeface.Descender * pxscale;
float ascentInPx = typeface.Ascender * pxscale;
float lineGapInPx = typeface.LineGap * pxscale;
PixelFarm.Drawing.Internal.RequestFontCacheAccess.SetActualFont(font, _system_id, typeface);
PixelFarm.Drawing.Internal.RequestFontCacheAccess.SetGeneralFontMetricInfo(font,
pxSize,
ascentInPx,
descentInPx,
lineGapInPx,
recommedLineSpacingInPx);
TextBufferSpan w = new TextBufferSpan(new char[] { ' ' });
Size whiteSpaceW = MeasureString(ref w, font);
PixelFarm.Drawing.Internal.RequestFontCacheAccess.SetWhitespaceWidth(font, _system_id, whiteSpaceW.Width);
return(typeface);
}
public void FindCurrentHitWord(out int startAt, out int len)
{
if (_currentTextRun == null)
{
startAt = 0;
len = 0;
return;
}
//
//we read entire line
//and send to line parser to parse a word
StringBuilder stbuilder = new StringBuilder();
_currentLine.CopyLineContent(stbuilder);
string lineContent = stbuilder.ToString();
//find char at
TextBufferSpan textBufferSpan = new TextBufferSpan(lineContent.ToCharArray());
using (ILineSegmentList segmentList = this.RootGfx.TextServices.BreakToLineSegments(ref textBufferSpan))
{
if (segmentList == null)
{
startAt = 0;
len = 0;
return;
}
int segcount = segmentList.Count;
for (int i = 0; i < segcount; ++i)
{
ILineSegment seg = segmentList[i];
if (seg.StartAt + seg.Length >= caret_char_index)
{
//stop at this segment
startAt = seg.StartAt;
len = seg.Length;
return;
}
}
}
//?
startAt = 0;
len = 0;
}
public ILineSegmentList BreakToLineSegments(ref TextBufferSpan textBufferSpan)
{
//a text buffer span is separated into multiple line segment list
char[] str = textBufferSpan.GetRawCharBuffer();
int cur_startAt = textBufferSpan.start;
MyLineSegmentList lineSegments = MyLineSegmentList.GetFreeLineSegmentList();
foreach (BreakSpan breakSpan in _txtServices.BreakToLineSegments(str, textBufferSpan.start, textBufferSpan.len))
{
MyLineSegment lineSeg = new MyLineSegment(lineSegments, breakSpan.startAt, breakSpan.len);
lineSeg.scriptLang = breakSpan.scLang;
lineSegments.AddLineSegment(lineSeg);
}
return(lineSegments);
}
public ILineSegmentList BreakToLineSegments(ref TextBufferSpan textBufferSpan)
{
_resuableLineSegments.Clear();
//a text buffer span is separated into multiple line segment list
char[] str = textBufferSpan.GetRawCharBuffer();
MyLineSegmentList lineSegs = new MyLineSegmentList(textBufferSpan.start, textBufferSpan.len);
int cur_startAt = textBufferSpan.start;
foreach (BreakSpan breakSpan in _txtServices.BreakToLineSegments(str, textBufferSpan.start, textBufferSpan.len))
{
MyLineSegment lineSeg = new MyLineSegment(lineSegs, breakSpan.startAt, breakSpan.len);
lineSeg.scriptLang = breakSpan.scLang;
_resuableLineSegments.Add(lineSeg);
}
//TODO: review here,
//check if we need to create new array everytime?
lineSegs.SetResultLineSegments(_resuableLineSegments.ToArray());
_resuableLineSegments.Clear();
return(lineSegs);
}
public void MeasureString(ref TextBufferSpan textBufferSpan, RequestFont font, int maxWidth, out int charFit, out int charFitWidth)
{
WinGdiTextService.MeasureString(textBufferSpan.GetRawCharBuffer(), textBufferSpan.start, textBufferSpan.len, font, maxWidth, out charFit, out charFitWidth);
}
public void CalculateUserCharGlyphAdvancePos(ref TextBufferSpan textBufferSpan,
RequestFont font, int[] outputGlyphAdvances, out int outputTotalW, out int outputLineHeight)
{
WinGdiTextService.CalculateGlyphAdvancePos(ref textBufferSpan, font, outputGlyphAdvances, out outputTotalW);
outputLineHeight = WinGdiTextService.MeasureBlankLineHeight(font);
}
//
public void CalculateUserCharGlyphAdvancePos(ref TextBufferSpan textBufferSpan, RequestFont font, int[] outputGlyphAdvances, out int outputTotalW, out int outputLineHeight)
{
CalculateUserCharGlyphAdvancePos(ref textBufferSpan, this.BreakToLineSegments(ref textBufferSpan), font, outputGlyphAdvances, out outputTotalW, out outputLineHeight);
}
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 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 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());
}
public ILineSegmentList BreakToLineSegments(ref TextBufferSpan textBufferSpan)
{
throw new NotImplementedException();
}
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 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 PixelFarm.Drawing.Size MeasureString(ref TextBufferSpan textBufferSpan, RequestFont font)
{
return(WinGdiTextService.MeasureString(textBufferSpan.GetRawCharBuffer(), textBufferSpan.start, textBufferSpan.len, font));
}
//==============================================
public static void CalculateGlyphAdvancePos(ref TextBufferSpan textBufferSpan,
RequestFont font, int[] outputGlyphAdvances, out int outputTotalW)
{
unsafe
{
outputTotalW = 0;
int len = textBufferSpan.len;
if (len == 0)
{
return;
}
WinGdiFont winfont = SetFont(font);
//ushort* glyhIndics = stackalloc ushort[len];
//fixed (char* s = &str[startAt])
//{
// NativeTextWin32.GetGlyphIndices(
// win32MemDc.DC,
// s,
// len,
// glyhIndics,
// 0);
//}
byte[] encoding = s_en.GetBytes(
textBufferSpan.GetRawCharBuffer(),
textBufferSpan.start,
len);
NativeTextWin32.FontABC[] abcWidths = winfont.GetInteralABCArray();
int totalW = 0;
for (int i = 0; i < len; ++i)
{
//ushort glyphIndex = *(glyhIndics + i);
int enc_index = encoding[i];
if (enc_index == 0)
{
break;//?
}
totalW += outputGlyphAdvances[i] = abcWidths[enc_index].Sum;
}
}
//unsafe
//{
// SetFont(font);
// NativeTextWin32.GCP_RESULTS gpcResult = new NativeTextWin32.GCP_RESULTS();
// int[] caretpos = new int[len];
// uint[] lpOrder = new uint[len];
// int[] lpDx = new int[len];
// fixed (int* lpdx_h = &lpDx[0])
// fixed (uint* lpOrder_h = &lpOrder[0])
// fixed (int* caretpos_h = &caretpos[0])
// fixed (char* str_h = &str[startAt])
// {
// gpcResult.lpCaretPos = caretpos_h;
// gpcResult.lpOrder = lpOrder_h;
// gpcResult.lpDx = lpdx_h;
// //gpcResult.
// ////gpcResult.lpCaretPos =
// NativeTextWin32.GetCharacterPlacement(
// win32MemDc.DC,
// str_h,
// len,
// len, ref gpcResult, 0);
// }
//}
}
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);
_typographyTxtServices.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
_typographyTxtServices.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 = _typographyTxtServices.GetUnscaledGlyphPlanSequence(_reusableTextBuffer,
lineSeg.StartAt,
lineSeg.Length);
GlyphPlanList planList = GlyphPlanSequence.UnsafeGetInteralGlyphPlanList(seq);
//IMPORTANT
//num of glyph may more or less than original user input char buffer
//
int endAt = seq.startAt + seq.len;
int seq_startAt = seq.startAt;
for (int s = seq_startAt; s < endAt; ++s)
{
GlyphPlan glyphPlan = planList[s];
float tx = glyphPlan.ExactX;
float ty = glyphPlan.ExactY;
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);
}
internal Size MeasureStringSize(char[] buffer, int startIndex, int len, RequestFont f)
{
TextBufferSpan textSpan = new TextBufferSpan(buffer, startIndex, len);
return(this.SampleIFonts.MeasureString(ref textSpan, f));
}
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();
}
}
