void InternalDrawString(char[] textBuffer, int startAt, int len, float x, float y)
{
UpdateGlyphLayoutSettings();
//unscale layout, with design unit scale
_glyphLayout.Layout(textBuffer, startAt, len);
//
//
_outputGlyphPlans.Clear();
//
if (this._pxScaleEngine != null)
{
//scale to specific font size
_pxScaleEngine.Layout(_glyphLayout.ResultUnscaledGlyphPositions, _outputGlyphPlans);
}
else
{
//no custom engine
//then use default scale
GlyphLayoutExtensions.GenerateGlyphPlans(
_glyphLayout.ResultUnscaledGlyphPositions,
_currentFontSizePxScale,
false,
_outputGlyphPlans);
}
DrawFromGlyphPlans(_outputGlyphPlans, x, 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();
GlyphLayoutExtensions.GenerateGlyphPlans(
_glyphLayout.ResultUnscaledGlyphPositions,
pxscale,
true,
_reusableGlyphPlanList);
//measure each glyph
//limit at specific width
int glyphCount = _reusableGlyphPlanList.Count;
for (int i = 0; i < glyphCount; ++i)
{
GlyphPlan glyphPlan = _reusableGlyphPlanList[i];
float right = glyphPlan.ExactRight * pxscale;
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 MeasureString(char[] str, int startAt, int len, out int w, out int h)
{
//measure string
//check if we use cache feature or not
if (str.Length < 1)
{
w = h = 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;
float accumH = 0;
foreach (BreakSpan breakSpan in BreakToLineSegments(str, startAt, len))
{
_glyphLayout.Layout(str, breakSpan.startAt, breakSpan.len);
//
_reusableGlyphPlanList.Clear();
GlyphLayoutExtensions.GenerateGlyphPlans(
_glyphLayout.ResultUnscaledGlyphPositions,
pxscale,
true,
_reusableGlyphPlanList);
//measure string size
var result = new MeasuredStringBox(
_reusableGlyphPlanList.AccumAdvanceX * pxscale,
_currentTypeface.Ascender * pxscale,
_currentTypeface.Descender * pxscale,
_currentTypeface.LineGap * pxscale,
Typography.OpenFont.Extensions.TypefaceExtensions.CalculateRecommendLineSpacing(_currentTypeface) * pxscale);
//
ConcatMeasureBox(ref accumW, ref accumH, ref result);
}
w = (int)System.Math.Round(accumW);
h = (int)System.Math.Round(accumH);
}
public virtual void GenerateGlyphPlan(
char[] textBuffer,
int startAt,
int len,
GlyphPlanList outputGlyphPlanList,
List <UserCodePointToGlyphIndex> charToGlyphMapList)
{
GlyphLayout glyphLayout = this.GlyphLayoutMan;
glyphLayout.Layout(textBuffer, startAt, len);
GlyphLayoutExtensions.GenerateGlyphPlans(
glyphLayout.ResultUnscaledGlyphPositions,
this.Typeface.CalculateScaleToPixelFromPointSize(this.FontSizeInPoints),
false, outputGlyphPlanList);
}
public GlyphPlanSequence GetUnscaledGlyphPlanSequence(GlyphLayout glyphLayout,
TextBuffer buffer, int start, int seqLen)
{
//UNSCALED VERSION
//use current typeface + scriptlang
int seqHashValue = CalculateHash(buffer, start, seqLen);
//this func get the raw char from buffer
//and create glyph list
//check if we have the string cache in specific value
//---------
if (seqLen > _glyphPlanSeqSet.MaxCacheLen)
{
//layout string is too long to be cache
//it need to split into small buffer
}
GlyphPlanSequence planSeq = GlyphPlanSequence.Empty;
GlyphPlanSeqCollection seqCol = _glyphPlanSeqSet.GetSeqCollectionOrCreateIfNotExist(seqLen);
if (!seqCol.TryGetCacheGlyphPlanSeq(seqHashValue, out planSeq))
{
//create a new one if we don't has a cache
//1. layout
glyphLayout.Layout(
buffer.UnsafeGetInternalBuffer(),
start,
seqLen);
int pre_count = _planList.Count;
//create glyph-plan ( UnScaled version) and add it to planList
GlyphLayoutExtensions.GenerateGlyphPlans(glyphLayout.ResultUnscaledGlyphPositions, 1, false, _planList);
int post_count = _planList.Count;
planSeq = new GlyphPlanSequence(_planList, pre_count, post_count - pre_count);
//
seqCol.Register(seqHashValue, planSeq);
}
return(planSeq);
}
public override void DrawString(char[] textBuffer, int startAt, int len, float x, float y)
{
//----------------
//TODO: use typography text service
//it should be faster since it has glyph-plan cache
//----------------
//1. update
UpdateGlyphLayoutSettings();
//2. unscale layout, in design unit
this._glyphLayout.Layout(textBuffer, startAt, len);
//3. scale to specific font size
_resuableGlyphPlanList.Clear();
GlyphLayoutExtensions.GenerateGlyphPlans(
_glyphLayout.ResultUnscaledGlyphPositions,
_currentTypeface.CalculateScaleToPixelFromPointSize(this.FontSizeInPoints),
false,
_reusablePxScaleGlyphPlanList);
DrawFromGlyphPlans(_resuableGlyphPlanList, x, y);
}
public void Layout(IGlyphPositions posStream, PxScaledGlyphPlanList outputGlyphPlanList)
{
float pxscale = _typeface.CalculateScaleToPixelFromPointSize(this._fontSizeInPoints);
if (!UseWithLcdSubPixelRenderingTechnique)
{
//layout without fit to alignment direction
GlyphLayoutExtensions.GenerateGlyphPlans(posStream, pxscale, false, outputGlyphPlanList);
return; //early exit
}
//------------------------------
int finalGlyphCount = posStream.Count;
#if DEBUG
float dbug_onepx = 1 / pxscale;
#endif
//
int cx = 0;
short cy = 0;
//
//at this state, we need exact info at this specific pxscale
//
_glyphMeshStore.SetFont(_typeface, this._fontSizeInPoints);
FineABC current_ABC = new FineABC();
FineABC prev_ABC = new FineABC();
for (int i = 0; i < finalGlyphCount; ++i)
{
short input_offset, offsetX, offsetY, advW; //all from pen-pos
ushort glyphIndex = posStream.GetGlyph(i, out input_offset, out offsetX, out offsetY, out advW);
GlyphControlParameters controlPars = _glyphMeshStore.GetControlPars(glyphIndex);
current_ABC.SetData(pxscale, controlPars, offsetX, offsetY, (ushort)advW);
//-------------------------------------------------------------
if (i > 0)
{
//inter-glyph space
//ideal space
float ideal_space = prev_ABC.s_c + current_ABC.s_a;
//actual space
float actual_space = prev_ABC.m_c + current_ABC.m_a;
if (ideal_space < 0)
{
//f-f
//f-o
if (prev_ABC.s_c < 0)
{
ideal_space = 0 + current_ABC.s_a;
}
if (ideal_space < 0)
{
ideal_space = 0;
}
}
if (ideal_space >= 0)
{
//m-a
//i-i
//o-p
if (actual_space > 1.5 && actual_space - 0.5 > ideal_space)
{
cx--;
}
else
{
if (actual_space < ideal_space)
{
if (prev_ABC.final_advW + prev_ABC.m_c_adjust < prev_ABC.m_max)
{
cx += current_ABC.m_a_adjust;
}
}
else
{
if (prev_ABC.final_advW - prev_ABC.m_c + prev_ABC.m_c_adjust > prev_ABC.m_max)
{
cx += prev_ABC.m_c_adjust;
}
}
}
}
else
{
//this should not occur?
}
}
//-------------------------------------------------------------
//TODO: review here again***
float exact_x = (float)(cx + current_ABC.s_offsetX);
float exact_y = (float)(cy + current_ABC.s_offsetY);
//check if the current position can create a sharp glyph
int exact_x_floor = (int)exact_x;
float x_offset_to_fit = current_ABC.s_avg_x_ToFit;
float final_x = exact_x_floor + x_offset_to_fit;
if (UseWithLcdSubPixelRenderingTechnique)
{
final_x += 0.33f;
}
outputGlyphPlanList.Append(new PxScaledGlyphPlan(
input_offset,
glyphIndex,
(short)current_ABC.final_advW,
(short)Math.Round(current_ABC.s_offsetX),
(short)Math.Round(current_ABC.s_offsetY)
));
//
//
cx += current_ABC.final_advW;
//-----------------------------------------------
prev_ABC = current_ABC;//copy current to prev
#if DEBUG
prev_ABC.dbugIsPrev = true;
#endif
// Console.WriteLine(exact_x + "+" + (x_offset_to_fit) + "=>" + final_x);
}
}
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);
//
_reusableScaledGlyphPlanList.Clear();
GlyphLayoutExtensions.GenerateGlyphPlans(
_glyphLayout.ResultUnscaledGlyphPositions,
pxscale,
true,
_reusableScaledGlyphPlanList);
//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;
}