void FontGenerator::fillCharacterDescriptors(const std::string& face, int size, bool bold, CharDescriptorList& chars,
const CharacterRange& range, const vec2& extraOffsets)
{
HDC dc = CreateCompatibleDC(0);
int pointsSize = MulDiv(size, GetDeviceCaps(dc, LOGPIXELSY), 72);
HFONT font = CreateFont(-pointsSize, 0, 0, 0, bold ? FW_BOLD : FW_NORMAL, 0, 0, 0, DEFAULT_CHARSET, OUT_DEFAULT_PRECIS,
CLIP_DEFAULT_PRECIS, CLEARTYPE_QUALITY, DEFAULT_PITCH, face.c_str());
SelectObject(dc, font);
for (CharacterRange::const_iterator i = range.begin(), e = range.end(); i != e; ++i)
{
SIZE charSize = { };
wchar_t wStr[2] = { static_cast<wchar_t>(*i), 0 };
GetTextExtentPointW(dc, wStr, 1, &charSize);
CharDescriptor desc = CharDescriptor(*i, bold ? CharParameter_Bold : 0);
desc.size.x = static_cast<float>(charSize.cx + 2) + extraOffsets.x;
desc.size.y = static_cast<float>(charSize.cy) + extraOffsets.y;
desc.extra.x = static_cast<int>(0.5f * extraOffsets.x + 1.0f);
desc.extra.y = static_cast<int>(0.5f * extraOffsets.y - 1.0f);
desc.extra.z = reinterpret_cast<int>(font);
chars.push_back(desc);
}
DeleteDC(dc);
}
FontGeneratorResult FontGenerator::generate(ImageFormat fmt)
{
if (!_outFileSet)
return FontGeneratorResult_OutputFileNotDefined;
std::string _outInfoFile = _outFile + ".font";
std::string _outLayoutFile = _outFile + ".layout" + ImageWriter::extensionForImageFormat(fmt);
std::string _outFontFile = _outFile + ImageWriter::extensionForImageFormat(fmt);
CharDescriptorList chars;
fillCharacterDescriptors(_face, _size, false, chars, _characterRange, vec2(_offset));
fillCharacterDescriptors(_face, _size, true, chars, _characterRange, vec2(_offset));
int charsPerRow = static_cast<int>(::sqrt(static_cast<float>(chars.size()))) * 2;
vec2i textureSize;
float textureWidth = 0.0f;
int index = 0;
float x_pos = characterOffset;
for (CharDescriptorList::iterator i = chars.begin(), e = chars.end(); i != e; ++i, ++index)
{
x_pos += i->size.x + characterOffset;
if (index && (index % charsPerRow == 0))
{
textureWidth = etMax(x_pos, textureWidth);
x_pos = characterOffset;
}
}
textureWidth = etMin(1024.0f, textureWidth);
bool foundOptimal = false;
while (!foundOptimal)
{
float lineHeight = 0.0f;
float y_pos = characterOffset;
x_pos = characterOffset;
textureSize.x = roundToHighestPowerOfTwo(static_cast<size_t>(textureWidth));
textureWidth = static_cast<float>(textureSize.x);
for (CharDescriptorList::iterator i = chars.begin(), e = chars.end(); i != e; ++i)
{
if (x_pos + i->size.x + characterOffset >= textureSize.x)
{
x_pos = characterOffset;
y_pos += lineHeight + characterOffset;
lineHeight = 0.0f;
}
i->origin = vec2(x_pos, y_pos);
x_pos += i->size.x + characterOffset;
lineHeight = etMax(i->size.y, lineHeight);
}
textureSize.y = roundToHighestPowerOfTwo( static_cast<size_t>(y_pos + lineHeight + characterOffset) );
foundOptimal = textureSize.y / textureSize.x <= 1;
if (foundOptimal) break;
textureSize.x *= 2;
textureWidth = static_cast<float>(textureSize.x);
}
for (CharDescriptorList::iterator i = chars.begin(), e = chars.end(); i != e; ++i)
{
i->uvOrigin.x = i->origin.x / static_cast<float>(textureSize.x);
i->uvOrigin.y = 1.0f - i->origin.y / static_cast<float>(textureSize.y);
i->uvSize.x = i->size.x / static_cast<float>(textureSize.x);
i->uvSize.y = i->size.y / static_cast<float>(textureSize.y);
}
int dataSize = textureSize.square() * 4;
BITMAPINFO bi = { sizeof(BITMAPINFO) };
bi.bmiHeader.biPlanes = 1;
bi.bmiHeader.biBitCount = 32;
bi.bmiHeader.biHeight = textureSize.y;
bi.bmiHeader.biWidth = textureSize.x;
bi.bmiHeader.biSizeImage = dataSize;
BinaryDataStorage data(dataSize);
data.fill(0);
HBITMAP bitmap = CreateBitmap(textureSize.x, textureSize.y, 1, 32, 0);
HDC dc = CreateCompatibleDC(0);
SelectObject(dc, bitmap);
SetTextColor(dc, 0xffffff);
SetBkMode(dc, TRANSPARENT);
SetDIBits(dc, bitmap, 0, textureSize.y, data.data(), &bi, DIB_RGB_COLORS);
for (CharDescriptorList::iterator i = chars.begin(), e = chars.end(); i != e; ++i)
{
wchar_t wStr[2] = { static_cast<wchar_t>(i->value), 0 };
SelectObject(dc, reinterpret_cast<HFONT>(i->extra.z));
TextOutW(dc, static_cast<int>(i->origin.x) + i->extra.x, static_cast<int>(i->origin.y) + i->extra.y, wStr, 1);
}
GetDIBits(dc, bitmap, 0, textureSize.y, data.data(), &bi, DIB_RGB_COLORS);
for (int i = 0; i < dataSize / 4; ++i)
{
unsigned char r = data[4*i+0];
unsigned char g = data[4*i+1];
unsigned char b = data[4*i+2];
data[4*i+0] = 255;
data[4*i+1] = 255;
data[4*i+2] = 255;
data[4*i+3] = (76 * r + 151 * g + 28 * b) / 255;
}
FontGeneratorResult result = FontGeneratorResult_Success;
if (!ImageWriter::writeImageToFile(_outFontFile, data, textureSize, 4, 8, fmt, false))
result = FontGeneratorResult_OutputFileFailed;
data.fill(0);
for (CharDescriptorList::iterator i = chars.begin(), e = chars.end(); i != e; ++i)
{
unsigned char rndColor[3] = { 128 + rand() % 127, 128 + rand() % 127, 128 + rand() % 127 };
int x = static_cast<int>(i->origin.x);
int y = static_cast<int>(i->origin.y);
int w = static_cast<int>(i->size.x);
int h = static_cast<int>(i->size.y);
for (int v = 0; v < h; ++v)
{
for (int u = 0; u < w; ++u)
{
int index = (x + u) + (textureSize.y - 1 - y - v) * textureSize.x;
data[4 * index + 0] = rndColor[0];
data[4 * index + 1] = rndColor[1];
data[4 * index + 2] = rndColor[2];
data[4 * index + 3] = 255;
}
}
}
if (!ImageWriter::writeImageToFile(_outLayoutFile, data, textureSize, 4, 8, fmt, false))
result = FontGeneratorResult_OutputFileFailed;
DeleteObject(bitmap);
DeleteDC(dc);
std::ofstream fontFile(_outInfoFile, std::ios::binary);
if (fontFile.fail())
return FontGeneratorResult_OutputFileFailed;
serializeInt(fontFile, FontGenVersion);
serializeString(fontFile, _face);
serializeInt(fontFile, _size);
serializeString(fontFile, getFileName(_outFontFile));
serializeString(fontFile, getFileName(_outLayoutFile));
serializeInt(fontFile, chars.size());
for (CharDescriptorList::iterator i = chars.begin(), e = chars.end(); i != e; ++i)
{
CharDescriptor& desc = *i;
fontFile.write(reinterpret_cast<const char*>(&desc), sizeof(CharDescriptor));
}
fontFile.close();
return result;
}
void GuiRenderer::createStringVertices(GuiVertexList& vertices, const CharDescriptorList& chars,
Alignment hAlign, Alignment vAlign, const vec2& pos, const vec4& color,
const mat4& transform, RenderLayer layer)
{
if (_saveFillRate)
layer = RenderLayer_Layer0;
vec4 line;
std::vector<vec4> lines;
for (const CharDescriptor& desc : chars)
{
line.w = etMax(line.w, desc.size.y);
if ((desc.value == ET_NEWLINE) || (desc.value == ET_RETURN))
{
lines.push_back(line);
line = vec4(0.0f, line.y + line.w, 0.0f, 0.0f);
}
else
{
line.z += desc.size.x;
}
}
lines.push_back(line);
float hAlignFactor = alignmentFactor(hAlign);
float vAlignFactor = alignmentFactor(vAlign);
for (vec4& i : lines)
{
i.x -= hAlignFactor * i.z;
i.y -= vAlignFactor * i.w;
}
size_t lineIndex = 0;
line = lines.front();
vec2 mask(layer == RenderLayer_Layer0 ? 0.0f : 1.0f, 0.0f);
vertices.fitToSize(6 * chars.size());
for (const CharDescriptor& desc : chars)
{
if ((desc.value == ET_NEWLINE) || (desc.value == ET_RETURN))
{
line = lines[++lineIndex];
}
else
{
vec2 topLeft = line.xy() + pos;
vec2 bottomLeft = topLeft + vec2(0.0f, desc.size.y);
vec2 topRight = topLeft + vec2(desc.size.x, 0.0f);
vec2 bottomRight = bottomLeft + vec2(desc.size.x, 0.0f);
vec2 topLeftUV = desc.uvOrigin;
vec2 topRightUV = topLeftUV + vec2(desc.uvSize.x, 0.0f);
vec2 bottomLeftUV = desc.uvOrigin - vec2(0.0f, desc.uvSize.y);
vec2 bottomRightUV = bottomLeftUV + vec2(desc.uvSize.x, 0.0f);
vec4 charColor = desc.color * color;
buildQuad(vertices,
GuiVertex(floorv(transform * topLeft), vec4(topLeftUV, mask), charColor),
GuiVertex(floorv(transform * topRight), vec4(topRightUV, mask), charColor),
GuiVertex(floorv(transform * bottomLeft), vec4(bottomLeftUV, mask), charColor),
GuiVertex(floorv(transform * bottomRight), vec4(bottomRightUV, mask), charColor));
line.x += desc.size.x;
}
}
}