{

cpp3ds::InputStream* stream = static_cast<cpp3ds::InputStream*>(rec->descriptor.pointer);

if (static_cast<unsigned long>(stream->seek(offset)) == offset)

{

if (count > 0)

return static_cast<unsigned long>(stream->read(reinterpret_cast<char*>(buffer), count));

else

return 0;

}

else

return count > 0 ? 0 : 1; // error code is 0 if we're reading, or nonzero if we're seeking

m_library (NULL),

m_face (NULL),

m_streamRec(NULL),

m_refCount (NULL),

m_info ()

{

m_library (copy.m_library),

m_face (copy.m_face),

m_streamRec (copy.m_streamRec),

m_refCount (copy.m_refCount),

m_info (copy.m_info),

m_pages (copy.m_pages),

m_pixelBuffer(copy.m_pixelBuffer)

{

// Note: as FreeType doesn't provide functions for copying/cloning,

// we must share all the FreeType pointers

if (m_refCount)

(*m_refCount)++;

{

// Cleanup the previous resources

cleanup();

m_refCount = new int(1);

// Initialize FreeType

// Note: we initialize FreeType for every font instance in order to avoid having a single

// global manager that would create a lot of issues regarding creation and destruction order.

FT_Library library;

if (FT_Init_FreeType(&library) != 0)

{

err() << "Failed to load font \"" << filename << "\" (failed to initialize FreeType)" << std::endl;

return false;

}

m_library = library;

// Load the new font face from the specified file

FT_Face face;

if (FT_New_Face(static_cast<FT_Library>(m_library), FileSystem::getFilePath(filename).c_str(), 0, &face) != 0)

{

err() << "Failed to load font \"" << filename << "\" (failed to create the font face)" << std::endl;

return false;

}

// Load the stroker that will be used to outline the font

FT_Stroker stroker;

if (FT_Stroker_New(static_cast<FT_Library>(m_library), &stroker) != 0)

{

err() << "Failed to load font \"" << filename << "\" (failed to create the stroker)" << std::endl;

return false;

}

m_stroker = stroker;

// Select the unicode character map

if (FT_Select_Charmap(face, FT_ENCODING_UNICODE) != 0)

{

err() << "Failed to load font \"" << filename << "\" (failed to set the Unicode character set)" << std::endl;

FT_Done_Face(face);

return false;

}

// Store the loaded font in our ugly void* :)

m_face = face;

// Store the font information

m_info.family = face->family_name ? face->family_name : std::string();

return true;

{

// Cleanup the previous resources

cleanup();

m_refCount = new int(1);

// Initialize FreeType

// Note: we initialize FreeType for every font instance in order to avoid having a single

// global manager that would create a lot of issues regarding creation and destruction order.

FT_Library library;

if (FT_Init_FreeType(&library) != 0)

{

err() << "Failed to load font from memory (failed to initialize FreeType)" << std::endl;

return false;

}

m_library = library;

// Load the new font face from the specified file

FT_Face face;

if (FT_New_Memory_Face(static_cast<FT_Library>(m_library), reinterpret_cast<const FT_Byte*>(data), static_cast<FT_Long>(sizeInBytes), 0, &face) != 0)

{

err() << "Failed to load font from memory (failed to create the font face)" << std::endl;

return false;

}

// Load the stroker that will be used to outline the font

FT_Stroker stroker;

if (FT_Stroker_New(static_cast<FT_Library>(m_library), &stroker) != 0)

{

err() << "Failed to load font from memory (failed to create the stroker)" << std::endl;

return false;

}

m_stroker = stroker;

// Select the Unicode character map

if (FT_Select_Charmap(face, FT_ENCODING_UNICODE) != 0)

{

err() << "Failed to load font from memory (failed to set the Unicode character set)" << std::endl;

FT_Done_Face(face);

return false;

}

// Store the loaded font in our ugly void* :)

m_face = face;

// Store the font information

m_info.family = face->family_name ? face->family_name : std::string();

return true;

{

// Cleanup the previous resources

cleanup();

m_refCount = new int(1);

// Initialize FreeType

// Note: we initialize FreeType for every font instance in order to avoid having a single

// global manager that would create a lot of issues regarding creation and destruction order.

FT_Library library;

if (FT_Init_FreeType(&library) != 0)

{

err() << "Failed to load font from stream (failed to initialize FreeType)" << std::endl;

return false;

}

m_library = library;

// Make sure that the stream's reading position is at the beginning

stream.seek(0);

// Prepare a wrapper for our stream, that we'll pass to FreeType callbacks

FT_StreamRec* rec = new FT_StreamRec;

std::memset(rec, 0, sizeof(*rec));

rec->base = NULL;

rec->size = static_cast<unsigned long>(stream.getSize());

rec->pos = 0;

rec->descriptor.pointer = &stream;

rec->read = &read;

rec->close = &close;

// Setup the FreeType callbacks that will read our stream

FT_Open_Args args;

args.flags = FT_OPEN_STREAM;

args.stream = rec;

args.driver = 0;

// Load the new font face from the specified stream

FT_Face face;

if (FT_Open_Face(static_cast<FT_Library>(m_library), &args, 0, &face) != 0)

{

err() << "Failed to load font from stream (failed to create the font face)" << std::endl;

delete rec;

return false;

}

// Load the stroker that will be used to outline the font

FT_Stroker stroker;

if (FT_Stroker_New(static_cast<FT_Library>(m_library), &stroker) != 0)

{

err() << "Failed to load font from stream (failed to create the stroker)" << std::endl;

return false;

}

m_stroker = stroker;

// Select the Unicode character map

if (FT_Select_Charmap(face, FT_ENCODING_UNICODE) != 0)

{

err() << "Failed to load font from stream (failed to set the Unicode character set)" << std::endl;

FT_Done_Face(face);

delete rec;

return false;

}

// Store the loaded font in our ugly void* :)

m_face = face;

m_streamRec = rec;

// Store the font information

m_info.family = face->family_name ? face->family_name : std::string();

return true;

{

// Special case where first or second is 0 (null character)

if (first == 0 || second == 0)

return 0.f;

FT_Face face = static_cast<FT_Face>(m_face);

if (face && FT_HAS_KERNING(face) && setCurrentSize(characterSize))

{

// Convert the characters to indices

FT_UInt index1 = FT_Get_Char_Index(face, first);

FT_UInt index2 = FT_Get_Char_Index(face, second);

// Get the kerning vector

FT_Vector kerning;

FT_Get_Kerning(face, index1, index2, FT_KERNING_DEFAULT, &kerning);

// X advance is already in pixels for bitmap fonts

if (!FT_IS_SCALABLE(face))

return static_cast<float>(kerning.x);

// Return the X advance

return static_cast<float>(kerning.x) / static_cast<float>(1 << 6);

}

else

{

// Invalid font, or no kerning

return 0.f;

}

{

FT_Face face = static_cast<FT_Face>(m_face);

if (face && setCurrentSize(characterSize))

{

return static_cast<float>(face->size->metrics.height) / static_cast<float>(1 << 6);

}

else

{

return 0.f;

}

{

FT_Face face = static_cast<FT_Face>(m_face);

if (face && setCurrentSize(characterSize))

{

// Return a fixed position if font is a bitmap font

if (!FT_IS_SCALABLE(face))

return characterSize / 10.f;

return -static_cast<float>(FT_MulFix(face->underline_position, face->size->metrics.y_scale)) / static_cast<float>(1 << 6);

}

else

{

return 0.f;

}

{

FT_Face face = static_cast<FT_Face>(m_face);

if (face && setCurrentSize(characterSize))

{

// Return a fixed thickness if font is a bitmap font

if (!FT_IS_SCALABLE(face))

return characterSize / 14.f;

return static_cast<float>(FT_MulFix(face->underline_thickness, face->size->metrics.y_scale)) / static_cast<float>(1 << 6);

}

else

{

return 0.f;

}

{

// Check if we must destroy the FreeType pointers

if (m_refCount)

{

// Decrease the reference counter

(*m_refCount)--;

// Free the resources only if we are the last owner

if (*m_refCount == 0)

{

// Delete the reference counter

delete m_refCount;

// Destroy the stroker

if (m_stroker)

FT_Stroker_Done(static_cast<FT_Stroker>(m_stroker));

// Destroy the font face

if (m_face)

FT_Done_Face(static_cast<FT_Face>(m_face));

// Destroy the stream rec instance, if any (must be done after FT_Done_Face!)

if (m_streamRec)

delete static_cast<FT_StreamRec*>(m_streamRec);

// Close the library

if (m_library)

FT_Done_FreeType(static_cast<FT_Library>(m_library));

}

}

// Reset members

m_library = NULL;

m_face = NULL;

m_stroker = NULL;

m_streamRec = NULL;

m_refCount = NULL;

m_pages.clear();

m_pixelBuffer.clear();

{

// The glyph to return

Glyph glyph;

// First, transform our ugly void* to a FT_Face

FT_Face face = static_cast<FT_Face>(m_face);

if (!face)

return glyph;

// Set the character size

if (!setCurrentSize(characterSize))

return glyph;

// Load the glyph corresponding to the code point

FT_Int32 flags = FT_LOAD_TARGET_NORMAL | FT_LOAD_FORCE_AUTOHINT;

if (outlineThickness != 0)

flags |= FT_LOAD_NO_BITMAP;

if (FT_Load_Char(face, codePoint, flags) != 0)

return glyph;

// Retrieve the glyph

FT_Glyph glyphDesc;

if (FT_Get_Glyph(face->glyph, &glyphDesc) != 0)

return glyph;

// Apply bold and outline (there is no fallback for outline) if necessary -- first technique using outline (highest quality)

FT_Pos weight = 1 << 6;

bool outline = (glyphDesc->format == FT_GLYPH_FORMAT_OUTLINE);

if (outline)

{

if (bold)

{

FT_OutlineGlyph outlineGlyph = (FT_OutlineGlyph)glyphDesc;

FT_Outline_Embolden(&outlineGlyph->outline, weight);

}

if (outlineThickness != 0)

{

FT_Stroker stroker = static_cast<FT_Stroker>(m_stroker);

FT_Stroker_Set(stroker, static_cast<FT_Fixed>(outlineThickness * static_cast<float>(1 << 6)), FT_STROKER_LINECAP_ROUND, FT_STROKER_LINEJOIN_ROUND, 0);

FT_Glyph_Stroke(&glyphDesc, stroker, false);

}

}

// Convert the glyph to a bitmap (i.e. rasterize it)

FT_Glyph_To_Bitmap(&glyphDesc, FT_RENDER_MODE_NORMAL, 0, 1);

FT_Bitmap& bitmap = reinterpret_cast<FT_BitmapGlyph>(glyphDesc)->bitmap;

// Apply bold if necessary -- fallback technique using bitmap (lower quality)

if (!outline)

{

if (bold)

FT_Bitmap_Embolden(static_cast<FT_Library>(m_library), &bitmap, weight, weight);

if (outlineThickness != 0)

err() << "Failed to outline glyph (no fallback available)" << std::endl;

}

// Compute the glyph's advance offset

glyph.advance = static_cast<float>(face->glyph->metrics.horiAdvance) / static_cast<float>(1 << 6);

if (bold)

glyph.advance += static_cast<float>(weight) / static_cast<float>(1 << 6);

int width = bitmap.width;

int height = bitmap.rows;

if ((width > 0) && (height > 0))

{

// Leave a small padding around characters, so that filtering doesn't

// pollute them with pixels from neighbors

const unsigned int padding = 1;

// Get the glyphs page corresponding to the character size

Page& page = m_pages[characterSize];

// Find a good position for the new glyph into the texture

glyph.textureRect = findGlyphRect(page, width + 2 * padding, height + 2 * padding);

// Make sure the texture data is positioned in the center

// of the allocated texture rectangle

glyph.textureRect.left += padding;

glyph.textureRect.top += padding;

glyph.textureRect.width -= 2 * padding;

glyph.textureRect.height -= 2 * padding;

// Compute the glyph's bounding box

glyph.bounds.left = static_cast<float>(face->glyph->metrics.horiBearingX) / static_cast<float>(1 << 6);

glyph.bounds.top = -static_cast<float>(face->glyph->metrics.horiBearingY) / static_cast<float>(1 << 6);

glyph.bounds.width = static_cast<float>(face->glyph->metrics.width) / static_cast<float>(1 << 6) + outlineThickness * 2;

glyph.bounds.height = static_cast<float>(face->glyph->metrics.height) / static_cast<float>(1 << 6) + outlineThickness * 2;

// Extract the glyph's pixels from the bitmap

m_pixelBuffer.resize(width * height * 4, 255);

const Uint8* pixels = bitmap.buffer;

if (bitmap.pixel_mode == FT_PIXEL_MODE_MONO)

{

// Pixels are 1 bit monochrome values

for (int y = 0; y < height; ++y)

{

for (int x = 0; x < width; ++x)

{

// The color channels remain white, just fill the alpha channel

std::size_t index = (x + y * width) * 4 + 3;

m_pixelBuffer[index] = ((pixels[x / 8]) & (1 << (7 - (x % 8)))) ? 255 : 0;

}

pixels += bitmap.pitch;

}

}

else

{

// Pixels are 8 bits gray levels

for (int y = 0; y < height; ++y)

{

for (int x = 0; x < width; ++x)

{

// The color channels remain white, just fill the alpha channel

std::size_t index = (x + y * width) * 4 + 3;

m_pixelBuffer[index] = pixels[x];

}

pixels += bitmap.pitch;

}

}

// Write the pixels to the texture

unsigned int x = glyph.textureRect.left;

unsigned int y = glyph.textureRect.top;

unsigned int w = glyph.textureRect.width;

unsigned int h = glyph.textureRect.height;

page.texture.update(&m_pixelBuffer[0], w, h, x, y);

}

// Delete the FT glyph

FT_Done_Glyph(glyphDesc);

// Force an OpenGL flush, so that the font's texture will appear updated

// in all contexts immediately (solves problems in multi-threaded apps)

#ifdef EMULATION

glCheck(glFlush());

#endif

// Done :)

return glyph;

{

// Find the line that fits well the glyph

Row* row = NULL;

float bestRatio = 0;

for (std::vector<Row>::iterator it = page.rows.begin(); it != page.rows.end() && !row; ++it)

{

float ratio = static_cast<float>(height) / it->height;

// Ignore rows that are either too small or too high

if ((ratio < 0.7f) || (ratio > 1.f))

continue;

// Check if there's enough horizontal space left in the row

if (width > page.texture.getSize().x - it->width)

continue;

// Make sure that this new row is the best found so far

if (ratio < bestRatio)

continue;

// The current row passed all the tests: we can select it

row = &*it;

bestRatio = ratio;

}

// If we didn't find a matching row, create a new one (10% taller than the glyph)

if (!row)

{

int rowHeight = height + height / 10;

while ((page.nextRow + rowHeight >= page.texture.getSize().y) || (width >= page.texture.getSize().x))

{

// Not enough space: resize the texture if possible

unsigned int textureWidth = page.texture.getSize().x;

unsigned int textureHeight = page.texture.getSize().y;

if ((textureWidth * 2 <= Texture::getMaximumSize()) && (textureHeight * 2 <= Texture::getMaximumSize()))

{

// Make the texture 2 times bigger

Image newImage;

newImage.create(textureWidth * 2, textureHeight * 2, Color(255, 255, 255, 0));

newImage.copy(page.texture.copyToImage(), 0, 0);

page.texture.loadFromImage(newImage);

}

else

{

// Oops, we've reached the maximum texture size...

err() << "Failed to add a new character to the font: the maximum texture size has been reached" << std::endl;

return IntRect(0, 0, 2, 2);

}

}

// We can now create the new row

page.rows.push_back(Row(page.nextRow, rowHeight));

page.nextRow += rowHeight;

row = &page.rows.back();

}

// Find the glyph's rectangle on the selected row

IntRect rect(row->width, row->top, width, height);

// Update the row informations

row->width += width;

return rect;

{

// FT_Set_Pixel_Sizes is an expensive function, so we must call it

// only when necessary to avoid killing performances

FT_Face face = static_cast<FT_Face>(m_face);

FT_UShort currentSize = face->size->metrics.x_ppem;

if (currentSize != characterSize)

{

FT_Error result = FT_Set_Pixel_Sizes(face, 0, characterSize);

if (result == FT_Err_Invalid_Pixel_Size)

{

// In the case of bitmap fonts, resizing can

// fail if the requested size is not available

if (!FT_IS_SCALABLE(face))

{

err() << "Failed to set bitmap font size to " << characterSize << std::endl;

err() << "Available sizes are: ";

for (int i = 0; i < face->num_fixed_sizes; ++i)

err() << face->available_sizes[i].height << " ";

err() << std::endl;

}

}

return result == FT_Err_Ok;

}

else

{

return true;

}