int lengthOfLongestSubstring(string s) {
if (s.empty()) return 0;
std::array<int, 256> CharMap(256, -1);
int MaxLength = 1;
for (int index = 0; index < s.length(); ++index)
{
if (CharMap[s[index]] == -1)
{
CharMap[s[index]] = index;
}
else
{
MaxLength = std::max(index - CharMap[s[index]], MaxLength);
CharMap[s[index]] = index;
}
}
return MaxLength;
}
TtfFont::TheGlyph &TtfFont::loadGlyph(uint32_t fontSize, char32_t character)
{
FT_Error error = 0;
TheGlyph t_glyph;
if(m_recentPixelSize != fontSize)
{
error = FT_Set_Pixel_Sizes(m_face, 0, fontSize);
SDL_assert_release(error == 0);
m_recentPixelSize = fontSize;
}
error = FT_Load_Char(m_face, character, FT_LOAD_RENDER);
SDL_assert_release(error == 0); //FIXME: return dummy glypg instead
FT_GlyphSlot glyph = m_face->glyph;
FT_Bitmap &bitmap = glyph->bitmap;
uint32_t width = bitmap.width;
uint32_t height = bitmap.rows;
uint8_t *image = new uint8_t[4 * width * height];
if(bitmap.pitch >= 0)
{
for(uint32_t w = 0; w < width; w++)
{
for(uint32_t h = 0; h < height; h++)
{
uint8_t color = bitmap.buffer[static_cast<uint32_t>(bitmap.pitch) * ((height - 1) - h) + w];
image[(4 * width) * (height - 1 - h) + (4 * w)] = color;
image[(4 * width) * (height - 1 - h) + (4 * w + 1)] = color;
image[(4 * width) * (height - 1 - h) + (4 * w + 2)] = color;
image[(4 * width) * (height - 1 - h) + (4 * w + 3)] = color;
}
}
}
else if(bitmap.pitch < 0)
{
for(uint32_t w = 0; w < width; w++)
{
for(uint32_t h = 0; h < height; h++)
{
uint8_t color = *(bitmap.buffer - (static_cast<uint32_t>(bitmap.pitch) * (h)) + w);
image[(4 * width)*h + (4 * w)] = color;
image[(4 * width)*h + (4 * w + 1)] = color;
image[(4 * width)*h + (4 * w + 2)] = color;
image[(4 * width)*h + (4 * w + 3)] = color;
}
}
}
m_texturesBank.emplace_back();
PGE_Texture &texture = m_texturesBank.back();
texture.nOfColors = GL_RGBA;
texture.format = GL_BGRA;
GlRenderer::loadRawTextureP(texture, image, width, height);
t_glyph.tx = &texture;
t_glyph.width = width;
t_glyph.height = height;
t_glyph.left = glyph->bitmap_left;
t_glyph.top = glyph->bitmap_top;
t_glyph.advance = glyph->advance.x;
t_glyph.glyph_width = glyph->advance.x;
delete [] image;
SizeCharMap::iterator fSize = m_charMap.find(fontSize);
if(fSize == m_charMap.end())
{
m_charMap.insert({fontSize, CharMap()});
fSize = m_charMap.find(fontSize);
SDL_assert_release(fSize != m_charMap.end());
}
fSize->second.insert({character, t_glyph});
CharMap::iterator rc = fSize->second.find(character);
SDL_assert_release(rc != fSize->second.end());
return rc->second;
}
