private Glyph GetGlyph(char character)
{
Glyph glyph;
if (!glyphs.TryGetValue(character, out glyph))
{
// if we have a loaded ttf try to create the glyph data
if (_ofTypeface != null)
{
var storage = new VertexStorage();
var translator = new VertexSourceGlyphTranslator(storage);
var glyphIndex = _ofTypeface.LookupIndex(character);
var ttfGlyph = _ofTypeface.GetGlyphByIndex(glyphIndex);
//
Typography.OpenFont.IGlyphReaderExtensions.Read(translator, ttfGlyph.GlyphPoints, ttfGlyph.EndPoints);
//
glyph = new Glyph();
glyph.unicode = character;
glyph.horiz_adv_x = _ofTypeface.GetHAdvanceWidthFromGlyphIndex(glyphIndex);
glyphs.Add(character, glyph);
// Wrap glyph data with ClosedLoopGlyphData to ensure all loops are correctly closed
glyph.glyphData = new ClosedLoopGlyphData(storage);
}
}
return(glyph);
}
internal IVertexSource GetGlyphForCharacter(char character)
{
if (_ofTypeface != null)
{
// TODO: MAKE SURE THIS IS OFF!!!!!!! It is un-needed and only for debugging
//glyphs.Clear();
}
// TODO: check for multi character glyphs (we don't currently support them in the reader).
Glyph glyph = null;
if (!glyphs.TryGetValue(character, out glyph))
{
// if we have a loaded ttf try to create the glyph data
if (_ofTypeface != null)
{
var storage = new VertexStorage();
var translator = new VertexSourceGlyphTranslator(storage);
var glyphIndex = _ofTypeface.LookupIndex(character);
var ttfGlyph = _ofTypeface.GetGlyphByIndex(glyphIndex);
//
Typography.OpenFont.IGlyphReaderExtensions.Read(translator, ttfGlyph.GlyphPoints, ttfGlyph.EndPoints);
//
glyph = new Glyph();
glyph.unicode = character;
glyph.horiz_adv_x = _ofTypeface.GetHAdvanceWidthFromGlyphIndex(glyphIndex);
glyphs.Add(character, glyph);
// Wrap glyph data with ClosedLoopGlyphData to ensure all loops are correctly closed
glyph.glyphData = new ClosedLoopGlyphData(storage);
}
}
return(glyph?.glyphData);
}
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
}
