char
AudicleFont::draw_sub ( const std::string & str, char last )
{
if ( str.length() == 0 ) return last; //empty string
if ( last ) { //add kerning for the last character pair, if supplied
glTranslated ( kerning ( last, str[0] ), 0, 0 );
}
glPushMatrix();
draw( str );
glPopMatrix();
glTranslated( length (str), 0 , 0 );
return *str.end();
}
void FontDescription::updateTypesettingFeatures() const
{
m_typesettingFeatures = s_defaultTypesettingFeatures;
switch (textRendering()) {
case AutoTextRendering:
break;
case OptimizeSpeed:
m_typesettingFeatures &= ~(WebCore::Kerning | Ligatures);
break;
case GeometricPrecision:
case OptimizeLegibility:
m_typesettingFeatures |= WebCore::Kerning | Ligatures;
break;
}
switch (kerning()) {
case FontDescription::NoneKerning:
m_typesettingFeatures &= ~WebCore::Kerning;
break;
case FontDescription::NormalKerning:
m_typesettingFeatures |= WebCore::Kerning;
break;
case FontDescription::AutoKerning:
break;
}
// As per CSS (http://dev.w3.org/csswg/css-text-3/#letter-spacing-property),
// When the effective letter-spacing between two characters is not zero (due to
// either justification or non-zero computed letter-spacing), user agents should
// not apply optional ligatures.
if (m_letterSpacing == 0) {
switch (commonLigaturesState()) {
case FontDescription::DisabledLigaturesState:
m_typesettingFeatures &= ~Ligatures;
break;
case FontDescription::EnabledLigaturesState:
m_typesettingFeatures |= Ligatures;
break;
case FontDescription::NormalLigaturesState:
break;
}
if (discretionaryLigaturesState() == FontDescription::EnabledLigaturesState
|| historicalLigaturesState() == FontDescription::EnabledLigaturesState
|| contextualLigaturesState() == FontDescription::EnabledLigaturesState) {
m_typesettingFeatures |= WebCore::Ligatures;
}
}
}
Math::Vector2 SpriteFont::GetOffset(char previous, char character)
{
GlyphMetric* glyph = (*m_Glyphs)[character];
Math::Vector2 kerning(0, 0);
if (previous != '\0')
{
for (int i = 0; i < glyph->Kerning.GetCount(); i++)
{
if (glyph->Kerning[i].First == character)
{
kerning = Math::Vector2(glyph->Kerning[i].Ammount, 0);
break;
}
}
}
return kerning + Math::Vector2(glyph->OffsetX, glyph->OffsetY);
}
void FontDescription::updateTypesettingFeatures() const
{
m_typesettingFeatures = s_defaultTypesettingFeatures;
switch (textRendering()) {
case AutoTextRendering:
break;
case OptimizeSpeed:
m_typesettingFeatures &= ~(WebCore::Kerning | Ligatures);
break;
case GeometricPrecision:
case OptimizeLegibility:
m_typesettingFeatures |= WebCore::Kerning | Ligatures;
break;
}
switch (kerning()) {
case FontDescription::NoneKerning:
m_typesettingFeatures &= ~WebCore::Kerning;
break;
case FontDescription::NormalKerning:
m_typesettingFeatures |= WebCore::Kerning;
break;
case FontDescription::AutoKerning:
break;
}
switch (commonLigaturesState()) {
case FontDescription::DisabledLigaturesState:
m_typesettingFeatures &= ~Ligatures;
break;
case FontDescription::EnabledLigaturesState:
m_typesettingFeatures |= Ligatures;
break;
case FontDescription::NormalLigaturesState:
break;
}
if (discretionaryLigaturesState() == FontDescription::EnabledLigaturesState
|| historicalLigaturesState() == FontDescription::EnabledLigaturesState
|| contextualLigaturesState() == FontDescription::EnabledLigaturesState) {
m_typesettingFeatures |= WebCore::Ligatures;
}
}
