public void CreateMapFromUserCharToGlyphIndics()
{
//(optional)
//this method should be called after we finish the substitution process
_mapUserCharToGlyphIndics.Clear();
//--------------------------------------
int userCharCount = _originalChars.Count;
for (int i = 0; i < userCharCount; ++i)
{
var charToGlyphMap = new UserCharToGlyphIndexMap();
#if DEBUG
charToGlyphMap.dbug_userCharIndex = (ushort)i;
charToGlyphMap.dbug_userChar = _originalChars[i];
#endif
_mapUserCharToGlyphIndics.Add(charToGlyphMap);
}
//--------------------------------------
//then fill with glyphindex to user char information
int glyphIndexCount = _glyphIndices.Count;
for (int i = 0; i < glyphIndexCount; ++i)
{
GlyphIndexToUserChar glyphIndexToUserChar = _mapGlyphIndexToUserChar[i];
//
UserCharToGlyphIndexMap charToGlyphIndexMap = _mapUserCharToGlyphIndics[glyphIndexToUserChar.o_user_charOffset];
charToGlyphIndexMap.AppendData((ushort)(i + 1), (glyphIndexToUserChar.len));
//replace with the changed value
_mapUserCharToGlyphIndics[glyphIndexToUserChar.o_user_charOffset] = charToGlyphIndexMap;
}
}
public void DoLeft()
{
int count = _charBuffer.Count;
if (count == 0)
{
_caretCharIndex = 0;
return;
}
else if (_caretCharIndex > 0)
{
//this is on the end
_caretCharIndex--;
//check if the caret can rest on this glyph?
if (_caretCharIndex > 0)
{
//find its mapping to glyph index
UserCharToGlyphIndexMap userCharToGlyphMap = _userCharToGlyphMap[_caretCharIndex];
int mapToGlyphIndex = userCharToGlyphMap.glyphIndexListOffset_plus1;
//
if (mapToGlyphIndex == 0)
{
//no map
DoLeft(); //recursive ***
return;
}
//-------------------------
//we -1 ***
GlyphPlan glyphPlan = _glyphPlans[userCharToGlyphMap.glyphIndexListOffset_plus1 - 1];
if (!glyphPlan.AdvanceMoveForward)
{
//caret can't rest here
//so
DoLeft(); //recursive ***
return;
}
//---------------------
//
}
}
else
{
}
}
public void SetCharIndexFromPos(float x, float y)
{
int count = _glyphPlans.Count;
float accum_x = 0;
for (int i = 0; i < count; ++i)
{
float thisGlyphW = _glyphPlans[i].AdvanceX;
accum_x += thisGlyphW;
if (accum_x > x)
{
//TODO: review here
//for some glyph that has been substituted
//glyph may not match with actual user char in the _line
float xoffset_on_glyph = (x - (accum_x - thisGlyphW));
if (xoffset_on_glyph >= (thisGlyphW / 2))
{
if (i + 1 >= _userCharToGlyphMap.Count)
{
//break here
_caretCharIndex = i + 1;
return;
}
_caretCharIndex = i + 1;
//check if the caret can rest on this pos or not
UserCharToGlyphIndexMap map = _userCharToGlyphMap[_caretCharIndex];
if (map.glyphIndexListOffset_plus1 == 0)
{
//no map
//cant rest here
if (_caretCharIndex < count)
{
DoRight();
}
}
else
{
//has map
if (_caretCharIndex < count && !_glyphPlans[map.glyphIndexListOffset_plus1 - 1].AdvanceMoveForward)
{
//recursive ***
DoRight(); //
}
}
}
else
{
_caretCharIndex = i;
//check if the caret can rest on this pos or not
UserCharToGlyphIndexMap map = _userCharToGlyphMap[_caretCharIndex];
if (map.glyphIndexListOffset_plus1 == 0)
{
//no map
//cant rest here
if (_caretCharIndex > 0)
{
//recursive ***
DoLeft();
}
}
else
{
//has map
if (_caretCharIndex < count && !_glyphPlans[map.glyphIndexListOffset_plus1 - 1].AdvanceMoveForward)
{
//recursive ***
DoLeft();
}
}
}
//stop
break;
}
}
}