private void button2_Click(object sender, EventArgs e)
{
//test text service
if (_textService == null)
{
_textService = new TextServiceHub();
}
Typography.TextServices.TextShapingService shapingService = _textService.ShapingService;
shapingService.SetCurrentFont(_basicOptions.Typeface.Name, InstalledFontStyle.Normal, 8);
shapingService.SetCurrentScriptLang(Typography.OpenFont.ScriptLangs.Latin);
GlyphPlanSequence seq = shapingService.LayoutText("Hello");
//----
// test render the output
selectedTextPrinter = _devVxsTextPrinter;
selectedTextPrinter.Typeface = _basicOptions.Typeface;
selectedTextPrinter.FontSizeInPoints = _basicOptions.FontSizeInPoints;
selectedTextPrinter.ScriptLang = _basicOptions.ScriptLang;
selectedTextPrinter.PositionTechnique = _basicOptions.PositionTech;
selectedTextPrinter.HintTechnique = HintTechnique.None;
selectedTextPrinter.EnableLigature = true;
_devVxsTextPrinter.UpdateGlyphLayoutSettings();
//-------------
//pre-render
painter.Clear(PixelFarm.Drawing.Color.White);
painter.UseSubPixelRendering = false;
painter.FillColor = PixelFarm.Drawing.Color.Black;
_devVxsTextPrinter.TargetCanvasPainter = painter; //*** essential ***
//render!,
float x = 20, y = 200;
_devVxsTextPrinter.DrawFromGlyphPlans(
GlyphPlanSequence.UnsafeGetInteralGlyphPlanList(seq),
seq.startAt,
seq.len,
x, y);
//----------
//use this util to copy image from Agg actual image to System.Drawing.Bitmap
PixelFarm.Agg.Imaging.BitmapHelper.CopyToGdiPlusBitmapSameSize(painter.Graphics.DestActualImage, winBmp);
//----------------
//copy from Agg's memory buffer to gdi
//PixelFarm.Agg.Imaging.BitmapHelper.CopyToGdiPlusBitmapSameSize(destImg, winBmp);
g.Clear(Color.White);
g.DrawImage(winBmp, new Point(10, 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);
}
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());
}
private void button1_Click(object sender, EventArgs e)
{
selectedTextPrinter = _devVxsTextPrinter;
selectedTextPrinter.Typeface = _basicOptions.Typeface;
selectedTextPrinter.FontSizeInPoints = _basicOptions.FontSizeInPoints;
selectedTextPrinter.ScriptLang = _basicOptions.ScriptLang;
selectedTextPrinter.PositionTechnique = _basicOptions.PositionTech;
selectedTextPrinter.HintTechnique = HintTechnique.None;
selectedTextPrinter.EnableLigature = true;
_devVxsTextPrinter.UpdateGlyphLayoutSettings();
//-------
var editableTextBlockLayoutEngine = new EditableTextBlockLayoutEngine();
editableTextBlockLayoutEngine.DefaultTypeface = _basicOptions.Typeface;
editableTextBlockLayoutEngine.FontSizeInPts = _basicOptions.FontSizeInPoints;
editableTextBlockLayoutEngine.LoadText("ABCD\r\n EFGH!");
editableTextBlockLayoutEngine.DoLayout();
//then we render the output to the screen
//see UpdateRenderOutput() code
//clear previous draw
//----------------
//-------------
painter.Clear(PixelFarm.Drawing.Color.White);
painter.UseSubPixelLcdEffect = false;
painter.FillColor = PixelFarm.Drawing.Color.Black;
_devVxsTextPrinter.TargetCanvasPainter = painter;
List <EditableTextLine> textlines = editableTextBlockLayoutEngine.UnsafeGetEditableTextLine();
//render eachline with painter
int lineCount = textlines.Count;
float x = 0;
int y = 200;
int lineSpacing = (int)_devVxsTextPrinter.FontLineSpacingPx;
for (int i = 0; i < lineCount; ++i)
{
EditableTextLine line = textlines[i];
List <IRun> runs = line.UnsageGetTextRunList();
int runCount = runs.Count;
for (int r = 0; r < runCount; ++r)
{
IRun run = runs[r];
TextRun textRun = run as TextRun;
if (textRun == null)
{
continue;
}
//
GlyphPlanSequence seq = textRun.GetGlyphPlanSeq();
_devVxsTextPrinter.DrawFromGlyphPlans(
GlyphPlanSequence.UnsafeGetInteralGlyphPlanList(seq),
seq.startAt,
seq.len,
x, y);
x += run.Width;
y -= lineSpacing; //next line?
}
x = 0; //reset at newline
}
//----------
//use this util to copy image from Agg actual image to System.Drawing.Bitmap
PixelFarm.Agg.Imaging.BitmapHelper.CopyToGdiPlusBitmapSameSize(painter.RenderSurface.DestActualImage, winBmp);
//----------------
//copy from Agg's memory buffer to gdi
//PixelFarm.Agg.Imaging.BitmapHelper.CopyToGdiPlusBitmapSameSize(destImg, winBmp);
g.Clear(Color.White);
g.DrawImage(winBmp, new Point(10, 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);
UnscaledGlyphPlanList 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;
//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.TextureFontGlyphData 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;
// }
//}
////---------
for (int s = seq_startAt; s < endAt; ++s)
{
UnscaledGlyphPlan glyphPlan = planList[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);
}