QString QtDistanceFieldFontTextureGenerator::generateFontTexture(CharacterRange characterRange)
{
// For each glyph
short intsize = sizeof(int);
// Starting from 1 (ommitting the null character) and going through a basic set.
for (int c = characterRange.begin; c <= characterRange.end; ++c)
{
if (isprint(c))
{
std::wstring_convert<std::codecvt_utf8<char32_t>, char32_t> conv1;
std::string u8str = conv1.to_bytes(c);
// Paint into QImage
QImage characterImage;
DistanceFieldGLFont::FontMetrics metrics;
tie(characterImage, metrics) = generateCharacterImage(QString(StrCon(u8str)));
// Process QImage to generate distance field
QImage distanceField = generateDistanceField(characterImage);
// Pack the distance field image into the font buffer image
QRect cropRect = calculateAutocrop(distanceField);
// Do the autocrop
QImage cropped = crop(cropRect, metrics, distanceField);
// Set the parameters in QDistanceFieldFontTexture
}
}
// Pack the image
// Save the image
}
bool ewol::resource::DistanceFieldFont::addGlyph(const char32_t& _val) {
std11::unique_lock<std11::recursive_mutex> lock(m_mutex);
bool hasChange = false;
if (m_font == nullptr) {
return false;
}
// add the curent "char"
GlyphProperty tmpchar;
tmpchar.m_UVal = _val;
egami::ImageMono imageGlyphRaw;
egami::Image imageGlyphDistanceField;
EWOL_DEBUG("Generate Glyph : " << _val);
if (m_font->getGlyphProperty(SIZE_GENERATION, tmpchar) == true) {
//EWOL_DEBUG("load char : '" << _val << "'=" << _val.get());
hasChange = true;
// change line if needed ...
if (m_lastGlyphPos.x() + tmpchar.m_sizeTexture.x()+m_borderSize*2.0 > m_data.getSize().x()) {
m_lastGlyphPos.setX(1);
m_lastGlyphPos += ivec2(0, m_lastRawHeigh);
m_lastRawHeigh = 0;
}
while(m_lastGlyphPos.y()+tmpchar.m_sizeTexture.y()+m_borderSize*2.0 > m_data.getSize().y()) {
ivec2 size = m_data.getSize();
size.setY(size.y()*2);
m_data.resize(size, etk::Color<>(0));
// change the coordonate on the element in the texture
for (size_t jjj = 0; jjj < m_listElement.size(); ++jjj) {
m_listElement[jjj].m_texturePosStart *= vec2(1.0f, 0.5f);
m_listElement[jjj].m_texturePosSize *= vec2(1.0f, 0.5f);
}
}
m_textureBorderSize = vec2(m_borderSize/(float)m_data.getSize().x(),
m_borderSize/(float)m_data.getSize().y() );
// draw the glyph
m_font->drawGlyph(imageGlyphRaw, SIZE_GENERATION, tmpchar, m_borderSize);
generateDistanceField(imageGlyphRaw, imageGlyphDistanceField);
/*
if (_val == 'Z') {
for (int32_t yyy = 0; yyy < imageGlyphDistanceField.getSize().y(); ++yyy) {
for (int32_t xxx = 0; xxx < imageGlyphDistanceField.getSize().x(); ++xxx) {
std::cout << (int)(imageGlyphDistanceField.get(ivec2(xxx, yyy)).r()) << " ";
}
//std::cout << std::endl;
}
}
*/
m_data.insert(m_lastGlyphPos, imageGlyphDistanceField);
// set image position
tmpchar.m_texturePosStart.setValue( ((float)m_lastGlyphPos.x()+(m_borderSize*0.5f)) / (float)m_data.getSize().x(),
((float)m_lastGlyphPos.y()+(m_borderSize*0.5f)) / (float)m_data.getSize().y() );
tmpchar.m_texturePosSize.setValue( ((float)imageGlyphRaw.getSize().x()-m_borderSize) / (float)m_data.getSize().x(),
((float)imageGlyphRaw.getSize().y()-m_borderSize) / (float)m_data.getSize().y() );
// update the maximum of the line hight :
if (m_lastRawHeigh < imageGlyphRaw.getSize().y()) {
// note : +1 is for the overlapping of the glyph (Part 2)
m_lastRawHeigh = imageGlyphRaw.getSize().y()+1;
}
// note : +1 is for the overlapping of the glyph (Part 3)
// update the Bitmap position drawing :
m_lastGlyphPos += ivec2(imageGlyphRaw.getSize().x()+1, 0);
} else {
EWOL_WARNING("Did not find char : '" << _val << "'=" << _val);
tmpchar.setNotExist();
}
m_listElement.push_back(tmpchar);
//m_font[iii]->display();
// generate the kerning for all the characters :
if (tmpchar.exist() == true) {
// TODO : set the kerning back ...
//m_font[iii]->generateKerning(m_size, m_listElement[iii]);
}
if (hasChange == true) {
flush();
//egami::store(m_data, "fileFont.bmp"); // ==> for debug test only ...
}
return hasChange;
}
