void SkScalerContext_FreeType_Base::emboldenOutline(FT_Face face, FT_Outline* outline)
{
FT_Pos strength;
strength = FT_MulFix(face->units_per_EM, face->size->metrics.y_scale)
/ 24;
FT_Outline_Embolden(outline, strength);
}
void FT_BOLD(FT_GlyphSlot slot)
{
FT_Face face = slot->face;
FT_Pos amount;
if(slot->format != FT_GLYPH_FORMAT_OUTLINE)
return;
/* some reasonable strength */
amount = FT_MulFix(face->units_per_EM,
face->size->metrics.y_scale ) / 18;
(void)FT_Outline_Embolden( &slot->outline, amount);
if ( slot->advance.x )
slot->advance.x += amount;
if ( slot->advance.y )
slot->advance.y += amount;
slot->metrics.width += amount;
slot->metrics.height += amount;
slot->metrics.horiBearingY += amount;
slot->metrics.horiAdvance += amount;
slot->metrics.vertBearingX -= amount / 2;
slot->metrics.vertBearingY += amount;
slot->metrics.vertAdvance += amount;
}
FT_GlyphSlot_Embolden( FT_GlyphSlot slot )
{
FT_Library library = slot->library;
FT_Face face = FT_SLOT_FACE( slot );
FT_Error error;
FT_Pos xstr, ystr;
if ( slot->format != FT_GLYPH_FORMAT_OUTLINE &&
slot->format != FT_GLYPH_FORMAT_BITMAP )
return;
/* some reasonable strength */
xstr = FT_MulFix( face->units_per_EM,
face->size->metrics.y_scale ) / 35;
ystr = xstr;
if ( slot->format == FT_GLYPH_FORMAT_OUTLINE )
{
error = FT_Outline_Embolden( &slot->outline, xstr );
/* ignore error */
/* this is more than enough for most glyphs; if you need accurate */
/* values, you have to call FT_Outline_Get_CBox */
xstr = xstr * 2;
ystr = xstr;
}
else if ( slot->format == FT_GLYPH_FORMAT_BITMAP )
{
xstr = FT_PIX_FLOOR( xstr );
if ( xstr == 0 )
xstr = 1 << 6;
ystr = FT_PIX_FLOOR( ystr );
error = FT_GlyphSlot_Own_Bitmap( slot );
if ( error )
return;
error = FT_Bitmap_Embolden( library, &slot->bitmap, xstr, ystr );
if ( error )
return;
}
if ( slot->advance.x )
slot->advance.x += xstr;
if ( slot->advance.y )
slot->advance.y += ystr;
slot->metrics.width += xstr;
slot->metrics.height += ystr;
slot->metrics.horiBearingY += ystr;
slot->metrics.horiAdvance += xstr;
slot->metrics.vertBearingX -= xstr / 2;
slot->metrics.vertBearingY += ystr;
slot->metrics.vertAdvance += ystr;
if ( slot->format == FT_GLYPH_FORMAT_BITMAP )
slot->bitmap_top += ystr >> 6;
}
const bool GDI2FT_RENDERER::generate_outline_glyph( FT_Glyph* glyph, WORD glyph_index, const FTC_Scaler scaler, FT_F26Dot6 embolden, bool is_italic ) const
/* --------------------------------------------------------------------------------
-------------------------------------------------------------------------------- */
{
FT_Glyph cached_glyph;
{
GDI2FT_MUTEX mutex( GDI2FT_MUTEX::MUTEX_FREETYPE );
if( FTC_ImageCache_LookupScaler( ft_glyph_cache, scaler, FT_LOAD_NO_BITMAP | FT_LOAD_FORCE_AUTOHINT | FT_LOAD_CROP_BITMAP | FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH | FT_LOAD_TARGET_LIGHT, glyph_index, &cached_glyph, NULL ) != 0 )
return NULL;
}
if( cached_glyph->format != FT_GLYPH_FORMAT_OUTLINE )
return NULL;
const bool oblique = ( ( context->outline_metrics->otmTextMetrics.tmItalic != 0 ) && !is_italic );
if( oblique || embolden )
{
FT_Glyph_Copy( cached_glyph, glyph );
FT_Outline* glyph_outline = &( reinterpret_cast<FT_OutlineGlyph>( *glyph )->outline );
if( oblique )
{
FT_Matrix oblique_mat = { static_cast<FT_Pos>( 65536 ), static_cast<FT_Pos>( 19661 ), 0, static_cast<FT_Pos>( 65536 ) };
FT_Outline_Transform( glyph_outline, &oblique_mat );
}
if( embolden )
FT_Outline_Embolden( glyph_outline, embolden );
return true;
}
else
*glyph = cached_glyph;
return false;
}
/*
* Class: FreetypeFont
* Method: loadGlyph0
* Signature: (JI)V
*/
JNIEXPORT void JNICALL Java_sage_FreetypeFont_loadGlyph0
(JNIEnv *env, jobject jo, jlong fontPtr, jint glyphCode)
{
//FT_Face face = (FT_Face) facePtr;
FTDataStruct* fontData = (FTDataStruct*)(intptr_t) fontPtr;
FT_Activate_Size(fontData->sizePtr);
int error = FT_Load_Glyph(fontData->facePtr, glyphCode, FT_LOAD_FORCE_AUTOHINT);
if ((fontData->style & FT_STYLE_FLAG_BOLD) != 0)
{
// Apply bold effect
if (fontData->facePtr->glyph->format == FT_GLYPH_FORMAT_OUTLINE)
{
/* some reasonable strength */
FT_Pos strength = FT_MulFix(fontData->facePtr->units_per_EM,
fontData->facePtr->size->metrics.y_scale ) / 42;
FT_BBox bbox_before, bbox_after;
// The bounding box code was what XBMC was using to do this calculation; but the
// examples in the freetype library use the *4 math below which then doesn't clip
// the text when we render it.
// FT_Outline_Get_CBox(&fontData->facePtr->glyph->outline, &bbox_before);
FT_Outline_Embolden(&fontData->facePtr->glyph->outline, strength); // ignore error
// FT_Outline_Get_CBox(&fontData->facePtr->glyph->outline, &bbox_after);
// FT_Pos dx = bbox_after.xMax - bbox_before.xMax;
// FT_Pos dy = bbox_after.yMax - bbox_before.yMax;
FT_Pos dx = strength * 4;
FT_Pos dy = dx;
if (fontData->facePtr->glyph->advance.x)
fontData->facePtr->glyph->advance.x += dx;
if (fontData->facePtr->glyph->advance.y)
fontData->facePtr->glyph->advance.y += dy;
fontData->facePtr->glyph->metrics.width += dx;
fontData->facePtr->glyph->metrics.height += dy;
fontData->facePtr->glyph->metrics.horiBearingY += dy;
fontData->facePtr->glyph->metrics.horiAdvance += dx;
fontData->facePtr->glyph->metrics.vertBearingX -= dx / 2;
fontData->facePtr->glyph->metrics.vertBearingY += dy;
fontData->facePtr->glyph->metrics.vertAdvance += dy;
}
}
if ((fontData->style & FT_STYLE_FLAG_ITALIC) != 0)
{
// Apply italics effect
if (fontData->facePtr->glyph->format == FT_GLYPH_FORMAT_OUTLINE)
{
/* For italic, simply apply a shear transform, with an angle */
/* of about 12 degrees. */
FT_Matrix transform;
transform.xx = 0x10000L;
transform.yx = 0x00000L;
transform.xy = 0x06000L;
transform.yy = 0x10000L;
FT_BBox bbox_before, bbox_after;
FT_Outline_Get_CBox(&fontData->facePtr->glyph->outline, &bbox_before);
FT_Outline_Transform(&fontData->facePtr->glyph->outline, &transform);
FT_Outline_Get_CBox(&fontData->facePtr->glyph->outline, &bbox_after);
FT_Pos dx = bbox_after.xMax - bbox_before.xMax;
FT_Pos dy = bbox_after.yMax - bbox_before.yMax;
fontData->facePtr->glyph->metrics.width += dx;
fontData->facePtr->glyph->metrics.height += dy;
}
}
}
bool Font::insertGlyph(Char character) {
if(!m_size) {
insertPlaceholderGlyph(character);
return false;
}
FT_UInt glyphIndex = FT_Get_Char_Index(m_size->face, character);
if(!glyphIndex) {
insertPlaceholderGlyph(character);
return false;
}
FT_Int32 flags = FT_LOAD_TARGET_LIGHT;
if(m_info.weight != 0) {
flags |= FT_LOAD_FORCE_AUTOHINT;
}
if(FT_Load_Glyph(m_size->face, glyphIndex, flags)) {
insertPlaceholderGlyph(character);
return false;
}
FT_GlyphSlot ftGlyph = m_size->face->glyph;
if(m_info.weight != 0 && ftGlyph->format == FT_GLYPH_FORMAT_OUTLINE) {
FT_Pos strength = FT_MulFix(m_size->face->units_per_EM, m_size->metrics.y_scale) / 24 * m_info.weight / 4;
FT_Outline_Embolden(&ftGlyph->outline, strength);
}
if(FT_Render_Glyph(ftGlyph, FT_RENDER_MODE_NORMAL)) {
insertPlaceholderGlyph(character);
return false;
}
// Fill in info for this glyph.
Glyph & glyph = m_glyphs[character];
glyph.index = glyphIndex;
glyph.size.x = ftGlyph->bitmap.width;
glyph.size.y = ftGlyph->bitmap.rows;
glyph.advance.x = float(ftGlyph->linearHoriAdvance) / 65536.f;
glyph.advance.y = float(ftGlyph->linearVertAdvance) / 65536.f;
glyph.lsb_delta = ftGlyph->lsb_delta;
glyph.rsb_delta = ftGlyph->rsb_delta;
glyph.draw_offset.x = ftGlyph->bitmap_left;
glyph.draw_offset.y = ftGlyph->bitmap_top - ftGlyph->bitmap.rows;
glyph.uv_start = Vec2f(0.f);
glyph.uv_end = Vec2f(0.f);
glyph.texture = 0;
// Some glyphs like spaces have a size of 0...
if(glyph.size.x != 0 && glyph.size.y != 0) {
Image imgGlyph;
imgGlyph.create(size_t(glyph.size.x), size_t(glyph.size.y), Image::Format_A8);
FT_Bitmap & srcBitmap = ftGlyph->bitmap;
arx_assert(srcBitmap.pitch >= 0);
arx_assert(unsigned(srcBitmap.pitch) == unsigned(srcBitmap.width));
// Copy pixels
unsigned char * src = srcBitmap.buffer;
unsigned char * dst = imgGlyph.getData();
memcpy(dst, src, glyph.size.x * glyph.size.y);
Vec2i offset;
if(!m_textures->insertImage(imgGlyph, glyph.texture, offset)) {
LogWarning << "Could not upload glyph for character U+" << std::hex << character
<< " (" << util::encode<util::UTF8>(character) << ") in font "
<< m_info.name;
insertPlaceholderGlyph(character);
return false;
}
// Compute UV mapping for each glyph.
const float textureSize = float(m_textures->getTextureSize());
glyph.uv_start = Vec2f(offset) / Vec2f(textureSize);
glyph.uv_end = Vec2f(offset + glyph.size) / Vec2f(textureSize);
}
return true;
}
/**
* Renders or Measures some Text
*
* @param aContext void context
* @param aBitmap pointer to bitmap ( if not provided will just measure )
* @param aBitmapWidth width of the provided bitmap
* @param aBitmapHeight height of the provided bitmap
* @param aHarfBuzz Harfbuzz structure containing glyph indices
* @param aIndex start with this character index
* @param aCount render / measure aCount characters
* @param aPen_x pointer to pen position that will be updated ( optional )
* @param aPen_y pointer to pen position that will be updated ( optional )
* @param aBBox pointer to Bounding Box that will be updated ( optional )
* @param resetBox if non-zero´Bounding Box will be reset before accumulating
* @param isArabic if non-zero will treat as right to left
* @param outlineStage 0 = draw ouside, 1 = draw inside of synth outline style
*/
static int PalFont_RenderHarfBuzz( void *aContext,
unsigned int *aBitmap,
int aBitmapWidth,
int aBitmapHeight,
HarfBuzz_t *aHarfBuzz,
int aIndex,
int aLength,
int *aPen_x,
int *aPen_y,
PalFont_BBox_t*aBBox,
int resetBox,
int isArabic,
int outlineStage ) {
printf("PalFont_RenderHarfBuzz: context is %p\n", aContext);
ft_Context_t *ftContext = FT_CONTEXT( aContext );
FT_GlyphSlot slot;
PalFont_BBox_t theBBox;
unsigned int i, j = outlineStage, k;
int thePen_x = 0;
int thePen_y = 0;
FT_UInt aGlyphIndex = 0;
FT_UInt aPrevGlyphIndex = 0;
if ( ftContext == NULL ) {
return -1;
}
if ( aPen_x != NULL ) {
thePen_x = *aPen_x;
}
if ( aPen_y != NULL ) {
thePen_y = *aPen_y;
}
slot = ftContext->m_face->glyph;
if ( resetBox != 0 ) {
/* make an invalid bounding box to start with */
theBBox.xMin = INT_MAX;
theBBox.yMin = INT_MAX;
theBBox.xMax = INT_MIN;
theBBox.yMax = INT_MIN;
}
for ( i = 0; i < aHarfBuzz->n_Chars;
thePen_x += ( int )( ( ( double )ftContext->m_Matrix.xx *
( double )slot->advance.x +
( double )ftContext->m_Matrix.xy *
( double )slot->advance.y ) / 65536.0 ),
thePen_y += ( int )( ( ( double )ftContext->m_Matrix.yy *
( double )slot->advance.y +
( double )ftContext->m_Matrix.yx *
( double )slot->advance.x ) / 65536.0 ),
aPrevGlyphIndex = aGlyphIndex,
i++ ) {
FT_Glyph aGlyph;
int y;
int x;
k = isArabic ? ( aHarfBuzz->n_Chars - i - 1 ) : i;
aGlyphIndex = aHarfBuzz->out_glyphs[ k ];
/* apply kerning if there is any */
if ( aPrevGlyphIndex != 0 && aGlyphIndex != 0 ) {
FT_Vector delta;
/* ignore errors */
if ( FT_Get_Kerning( ftContext->m_face,
aPrevGlyphIndex,
aGlyphIndex,
FT_KERNING_DEFAULT,
&delta ) == 0 ) {
thePen_x += ( int )( ( ( double )ftContext->m_Matrix.xx *
( double )delta.x ) / ( 65536.0 ) );
}
}
/* load glyph image into the slot (erase previous one) */
if ( FT_Load_Glyph( ftContext->m_face,
aGlyphIndex,
FT_LOAD_DEFAULT ) != 0 ) {
continue; /* ignore errors */
}
// if we are synthesising italic then shear outline
if ( ftContext->m_Synth & SynthItalic ) {
FT_Matrix m;
m.xx = 65536;
m.yy = 65536;
m.xy = 19660;
m.yx = 0;
FT_Outline_Transform( &slot->outline, &m );
}
/* if we are doing first pass of two color then fatten */
if ( ( ftContext->m_Synth & SynthTwoColor ) && j == 0 ) {
if ( FT_Outline_Embolden( &slot->outline,
ftContext->m_StrokeWidth << 2 ) != 0 ) {
continue;
}
}
// if we are doing second pass of two color then translate
if ( ( ftContext->m_Synth & SynthTwoColor ) && j == 1 ) {
FT_Outline_Translate( &slot->outline,
ftContext->m_StrokeWidth * 2,
ftContext->m_StrokeWidth * 2 );
}
/* if we are synthesising bold then perform fattening operation */
if ( ftContext->m_Synth & SynthBold ) {
if ( FT_Outline_Embolden( &slot->outline,
ftContext->m_Boldness << 1 ) != 0 ) {
continue;
}
}
/* if we are synthesising stroke font then stroke it */
if ( ftContext->m_Synth & SynthStroke ) {
if ( ft_OutlineStroke( ftContext->m_library,
&slot->outline, ftContext->m_StrokeWidth ) != 0 ) {
continue;
}
}
FT_Outline_Transform( &slot->outline, &ftContext->m_Matrix );
/* if bounding box is supplied then
accumulate the glyphs bounding boxes */
if ( aBBox != NULL ) {
FT_BBox theCBox;
FT_Outline_Get_CBox( &slot->outline, &theCBox );
theCBox.xMin += thePen_x;
theCBox.xMax += thePen_x;
theCBox.yMin += thePen_y;
theCBox.yMax += thePen_y;
if ( theCBox.xMin < theBBox.xMin ) {
theBBox.xMin = theCBox.xMin;
}
if ( theCBox.yMin < theBBox.yMin ) {
theBBox.yMin = theCBox.yMin;
}
if ( theCBox.xMax > theBBox.xMax ) {
theBBox.xMax = theCBox.xMax;
}
if ( theCBox.yMax > theBBox.yMax ) {
theBBox.yMax = theCBox.yMax;
}
}
/* if bitmap is supplied then draw into it */
if ( aBitmap == NULL ) {
continue;
}
/* convert to an anti-aliased bitmap */
if ( FT_Render_Glyph( slot, FT_RENDER_MODE_NORMAL ) != 0 )
continue;
/* render the bitmap... */
for ( y = 0; y < slot->bitmap.rows; y++ ) {
for ( x = 0; x < slot->bitmap.width; x++ ) {
unsigned int by = (-(thePen_y>>6)-slot->bitmap_top+y+aBitmapHeight);
unsigned int bx = (thePen_x>>6)+slot->bitmap_left+x;
if ( bx < aBitmapWidth && by < aBitmapHeight ) {
unsigned int *pixel = &aBitmap[ by * aBitmapWidth + bx ];
*pixel = blend( *pixel,
j ? ftContext->m_fontColor : ftContext->m_fontColorTwo,
slot->bitmap.buffer[y*slot->bitmap.pitch+x],
j ? ftContext->m_Alpha1 : ftContext->m_Alpha2 );
}
}
}
}
if ( aBBox != NULL ) {
*aBBox = theBBox;
}
if ( aPen_x != NULL ) {
*aPen_x = thePen_x;
}
if ( aPen_y != NULL ) {
*aPen_y = thePen_y;
}
return 0;
}
bool ExtractGlyph(unsigned int characterSize, char32_t character, UInt32 style, FontGlyph* dst) override
{
#ifdef NAZARA_DEBUG
if (!dst)
{
NazaraError("Glyph destination cannot be null");
return false;
}
#endif
SetCharacterSize(characterSize);
if (FT_Load_Char(m_face, character, FT_LOAD_FORCE_AUTOHINT | FT_LOAD_TARGET_NORMAL) != 0)
{
NazaraError("Failed to load character");
return false;
}
FT_GlyphSlot& glyph = m_face->glyph;
const FT_Pos boldStrength = 2 << 6;
bool embolden = (style & TextStyle_Bold);
dst->advance = (embolden) ? boldStrength >> 6 : 0;
if (embolden && glyph->format == FT_GLYPH_FORMAT_OUTLINE)
{
// http://www.freetype.org/freetype2/docs/reference/ft2-outline_processing.html#FT_Outline_Embolden
FT_Outline_Embolden(&glyph->outline, boldStrength);
embolden = false;
}
// http://www.freetype.org/freetype2/docs/reference/ft2-glyph_management.html#FT_Glyph_To_Bitmap
// Conversion du glyphe vers le format bitmap
// Cette fonction ne fait rien dans le cas où le glyphe est déjà un bitmap
if (FT_Render_Glyph(glyph, FT_RENDER_MODE_NORMAL) != 0)
{
NazaraError("Failed to convert glyph to bitmap");
return false;
}
// Dans le cas où nous voulons des caractères gras mais que nous n'avons pas pu agir plus tôt
// nous demandons à FreeType d'agir directement sur le bitmap généré
if (embolden)
{
// http://www.freetype.org/freetype2/docs/reference/ft2-bitmap_handling.html#FT_Bitmap_Embolden
// "If you want to embolden the bitmap owned by a FT_GlyphSlot_Rec, you should call FT_GlyphSlot_Own_Bitmap on the slot first"
FT_GlyphSlot_Own_Bitmap(glyph);
FT_Bitmap_Embolden(s_library, &glyph->bitmap, boldStrength, boldStrength);
}
dst->advance += glyph->metrics.horiAdvance >> 6;
dst->aabb.x = glyph->metrics.horiBearingX >> 6;
dst->aabb.y = -(glyph->metrics.horiBearingY >> 6); // Inversion du repère
dst->aabb.width = glyph->metrics.width >> 6;
dst->aabb.height = glyph->metrics.height >> 6;
unsigned int width = glyph->bitmap.width;
unsigned int height = glyph->bitmap.rows;
if (width > 0 && height > 0)
{
dst->image.Create(ImageType_2D, PixelFormatType_A8, width, height);
UInt8* pixels = dst->image.GetPixels();
const UInt8* data = glyph->bitmap.buffer;
// Selon la documentation FreeType, le glyphe peut être encodé en format A8 (huit bits d'alpha par pixel)
// ou au format A1 (un bit d'alpha par pixel).
// Cependant dans un cas comme dans l'autre, il nous faut gérer le pitch (les données peuvent ne pas être contigues)
// ainsi que le padding dans le cas du format A1 (Chaque ligne prends un nombre fixe d'octets)
if (glyph->bitmap.pixel_mode == FT_PIXEL_MODE_MONO)
{
// Format A1
for (unsigned int y = 0; y < height; ++y)
{
for (unsigned int x = 0; x < width; ++x)
*pixels++ = (data[x/8] & ((1 << (7 - x%8)) ? 255 : 0));
data += glyph->bitmap.pitch;
}
}
else
{
// Format A8
if (glyph->bitmap.pitch == static_cast<int>(width*sizeof(UInt8))) // Pouvons-nous copier directement ?
dst->image.Update(glyph->bitmap.buffer);
else
{
for (unsigned int y = 0; y < height; ++y)
{
std::memcpy(pixels, data, width*sizeof(UInt8));
data += glyph->bitmap.pitch;
pixels += width*sizeof(UInt8);
}
}
}
}
else
dst->image.Destroy(); // On s'assure que l'image ne contient alors rien
return true;
}
FT_Error ft_OutlineStroke( FT_Library library,
FT_Outline *Outline,
int Thickness )
{
FT_Error err = 0;
FT_Outline OutlineReversed;
FT_Outline OutlineFattened;
FT_Outline OutlineStroke;
if ( Outline == NULL ) {
goto failure;
}
err = FT_Outline_New( library,
Outline->n_points,
Outline->n_contours,
&OutlineReversed );
if ( err != 0 ) {
goto failure;
}
err = FT_Outline_New( library,
Outline->n_points,
Outline->n_contours,
&OutlineFattened );
if ( err != 0 ) {
goto failure;
}
err = FT_Outline_Copy( Outline, &OutlineReversed );
if ( err != 0 ) {
goto failure;
}
err = FT_Outline_Copy( Outline, &OutlineFattened );
if ( err != 0 ) {
goto failure;
}
err = FT_Outline_New( library,
Outline->n_points * 2,
Outline->n_contours * 2,
&OutlineStroke );
if ( err != 0 ) {
goto failure;
}
/* Perform fattening operation */
err = FT_Outline_Embolden( &OutlineFattened, Thickness << 1 );
if ( err != 0 ) {
goto failure;
}
/* Perform reversal operation */
ft_OutlineReverse( Outline,
&OutlineReversed );
FT_Outline_Translate( &OutlineReversed, Thickness, Thickness );
/* Merge outlines */
ft_OutlineMerge( &OutlineFattened,
&OutlineReversed,
&OutlineStroke );
/* delete temporary and input outline */
err = FT_Outline_Done( library, &OutlineReversed );
if ( err != 0 ) {
goto failure;
}
err = FT_Outline_Done( library, &OutlineFattened );
if ( err != 0 ) {
goto failure;
}
err = FT_Outline_Done( library, Outline );
if ( err != 0 ) {
goto failure;
}
/* finally copy the outline - its not clear from ft docs if this
does the right thing but i _think_ its correct */
memcpy( Outline, &OutlineStroke, sizeof( FT_Outline ) );
return 0;
failure:
return err;
}
void FontRenderer::rasterize() {
clear_bitmaps();
if (!m_ft_face) {
return;
}
qDebug() << " begin rasterize_font ";
if (m_config->italic()!=0) {
FT_Matrix matrix;
const float angle = (-M_PI*m_config->italic()) / 180.0f;
matrix.xx = (FT_Fixed)( cos( angle ) * 0x10000L );
matrix.xy = (FT_Fixed)(-sin( angle ) * 0x10000L );
matrix.yx = (FT_Fixed)( 0/*sin( angle )*/ * 0x10000L );
matrix.yy = (FT_Fixed)( 1/*cos( angle )*/ * 0x10000L );
FT_Set_Transform(m_ft_face,&matrix,0);
} else {
FT_Set_Transform(m_ft_face,0,0);
}
/// fill metrics
if (FT_IS_SCALABLE(m_ft_face)) {
m_rendered.metrics.ascender = m_ft_face->size->metrics.ascender / 64;
m_rendered.metrics.descender = m_ft_face->size->metrics.descender/ 64;
m_rendered.metrics.height = m_ft_face->size->metrics.height/ 64;
} else {
m_rendered.metrics.ascender = m_ft_face->ascender;
m_rendered.metrics.descender = m_ft_face->descender;
m_rendered.metrics.height = m_ft_face->height;
}
bool use_kerning = FT_HAS_KERNING( m_ft_face );
const ushort* chars = m_config->characters().utf16();
size_t amount = 0;
while (chars[amount]!=0) amount++;
int error = 0;
for (size_t i=0;i<amount;i++) {
int glyph_index = FT_Get_Char_Index( m_ft_face, chars[i] );
if (glyph_index==0 && !m_config->renderMissing())
continue;
FT_Int32 flags = FT_LOAD_DEFAULT;
if (!m_config->antialiased()) {
flags = flags | FT_LOAD_MONOCHROME | FT_LOAD_TARGET_MONO;
} else {
flags = flags | FT_LOAD_TARGET_NORMAL;
}
switch (m_config->hinting()) {
case FontConfig::HintingDisable:
flags = flags | FT_LOAD_NO_HINTING | FT_LOAD_NO_AUTOHINT;
break;
case FontConfig::HintingForceFreetypeAuto:
flags = flags | FT_LOAD_FORCE_AUTOHINT;
break;
case FontConfig::HintingDisableFreetypeAuto:
flags = flags | FT_LOAD_NO_AUTOHINT;
break;
default:
break;
}
error = FT_Load_Glyph( m_ft_face, glyph_index, flags );
if ( error )
continue;
if (m_config->bold()!=0) {
FT_Pos strength = m_config->size()*m_config->bold();
if ( m_ft_face->glyph->format == FT_GLYPH_FORMAT_OUTLINE )
FT_Outline_Embolden( &m_ft_face->glyph->outline, strength );
}
if (m_ft_face->glyph->format!=FT_GLYPH_FORMAT_BITMAP) {
error = FT_Render_Glyph( m_ft_face->glyph,
m_config->antialiased() ? FT_RENDER_MODE_NORMAL:FT_RENDER_MODE_MONO );
}
if ( error )
continue;
if (append_bitmap(chars[i])) {
if (use_kerning)
append_kerning(chars[i],chars,amount);
}
}
imagesChanged(m_chars);
imagesChanged();
}
bool gfx_font_adapter::prepare_glyph(unsigned int code)
{
if (m_impl->font) {
m_impl->cur_glyph_index = FT_Get_Char_Index(m_impl->font, code);
int error = FT_Load_Glyph(m_impl->font, m_impl->cur_glyph_index,
m_impl->hinting ? FT_LOAD_DEFAULT : FT_LOAD_NO_HINTING);
bool is_sys_bitmap = false;
if (m_impl->font->glyph->format == FT_GLYPH_FORMAT_BITMAP)
is_sys_bitmap = true;
if (error == 0) {
if (m_impl->antialias && !is_sys_bitmap) {
if (m_impl->weight == 500) {
int strength = 1 << 5;
FT_Outline_Embolden(&(m_impl->font->glyph->outline), strength);
} else if (m_impl->weight == 700) {
int strength = 1 << 6;
FT_Outline_Embolden(&(m_impl->font->glyph->outline), strength);
} else if (m_impl->weight == 900) {
int strength = 1 << 7;
FT_Outline_Embolden(&(m_impl->font->glyph->outline), strength);
}
// outline text
m_impl->cur_data_type = glyph_type_outline;
m_impl->cur_font_path.remove_all();
if (decompose_ft_outline(m_impl->font->glyph->outline,
m_impl->flip_y, m_impl->matrix, m_impl->cur_font_path))
{
m_impl->cur_bound_rect = get_bounding_rect(m_impl->cur_font_path);
m_impl->cur_data_size = m_impl->cur_font_path.total_byte_size()+sizeof(unsigned int);//count data
m_impl->cur_advance_x = FLT_TO_SCALAR(int26p6_to_flt(m_impl->font->glyph->advance.x));
m_impl->cur_advance_y = FLT_TO_SCALAR(int26p6_to_flt(m_impl->font->glyph->advance.y));
m_impl->matrix.transform(&m_impl->cur_advance_x, &m_impl->cur_advance_y);
return true;
}
} else {
m_impl->cur_data_type = glyph_type_mono;
if (is_sys_bitmap || !FT_IS_SCALABLE(m_impl->font) || m_impl->matrix.is_identity()) {
gfx_scanline_bin sl;
error = FT_Render_Glyph(m_impl->font->glyph, FT_RENDER_MODE_MONO);
if (error == 0) {
decompose_ft_bitmap_mono(m_impl->font->glyph->bitmap,
m_impl->font->glyph->bitmap_left, m_impl->flip_y ? -m_impl->font->glyph->bitmap_top :
m_impl->font->glyph->bitmap_top, m_impl->flip_y, sl, m_impl->cur_font_scanlines_bin);
m_impl->cur_bound_rect = rect(m_impl->cur_font_scanlines_bin.min_x(),
m_impl->cur_font_scanlines_bin.min_y(),
m_impl->cur_font_scanlines_bin.max_x() + 1,
m_impl->cur_font_scanlines_bin.max_y() + 1);
m_impl->cur_data_size = m_impl->cur_font_scanlines_bin.byte_size();
m_impl->cur_advance_x = FLT_TO_SCALAR(int26p6_to_flt(m_impl->font->glyph->advance.x));
m_impl->cur_advance_y = FLT_TO_SCALAR(int26p6_to_flt(m_impl->font->glyph->advance.y));
return true;
}
} else {
if (m_impl->weight == 500) {
int strength = 1 << 5;
FT_Outline_Embolden(&(m_impl->font->glyph->outline), strength);
} else if (m_impl->weight == 700) {
int strength = 1 << 6;
FT_Outline_Embolden(&(m_impl->font->glyph->outline), strength);
} else if (m_impl->weight == 900) {
int strength = 1 << 7;
FT_Outline_Embolden(&(m_impl->font->glyph->outline), strength);
}
m_impl->cur_font_path.remove_all();
if (decompose_ft_outline(m_impl->font->glyph->outline,
m_impl->flip_y, m_impl->matrix, m_impl->cur_font_path))
{
gfx_rasterizer_scanline_aa<> rasterizer;
picasso::conv_curve curves(m_impl->cur_font_path);
curves.approximation_scale(4.0);
rasterizer.add_path(curves);
gfx_scanline_bin sl;
m_impl->cur_font_scanlines_bin.prepare(); // Remove all
gfx_render_scanlines(rasterizer, sl, m_impl->cur_font_scanlines_bin);
m_impl->cur_bound_rect = rect(m_impl->cur_font_scanlines_bin.min_x(),
m_impl->cur_font_scanlines_bin.min_y(),
m_impl->cur_font_scanlines_bin.max_x() + 1,
m_impl->cur_font_scanlines_bin.max_y() + 1);
m_impl->cur_data_size = m_impl->cur_font_scanlines_bin.byte_size();
m_impl->cur_advance_x = FLT_TO_SCALAR(int26p6_to_flt(m_impl->font->glyph->advance.x));
m_impl->cur_advance_y = FLT_TO_SCALAR(int26p6_to_flt(m_impl->font->glyph->advance.y));
m_impl->matrix.transform(&m_impl->cur_advance_x, &m_impl->cur_advance_y);
return true;
}
}
}
}
}
return false;
}
/*
* Function : libaroma_font_glyph_draw
* Return Value: byte
* Descriptions: draw glyph into canvas
*/
byte libaroma_font_glyph_draw(
LIBAROMA_CANVASP dest,
LIBAROMA_GLYPH aglyph_param,
int x,
int y,
word color,
byte flags,
byte opacity
) {
_LIBAROMA_FONT_SLOT_CACHEP aglyph =
(_LIBAROMA_FONT_SLOT_CACHEP) aglyph_param;
if (!aglyph) {
return 0;
}
if (aglyph->glyph==NULL) {
return 0;
}
if (dest == NULL) {
dest = libaroma_fb()->canvas;
}
/* thread safe lock */
_libaroma_font_lock(1);
/* copy & render */
FT_Glyph fglyph=NULL;
fglyph=NULL;
int cnt=0;
if (FT_Glyph_Copy(aglyph->glyph, &fglyph)!=0){
_libaroma_font_lock(0);
return 0;
}
if (cnt>0){
printf("[FT] FC: %i %i\n",cnt,aglyph->codepoint);
}
/* italic transform */
if (flags & _LIBAROMA_TEXTCHUNK_ITALIC) {
FT_Matrix matrix;
matrix.xx = 0x10000L;
matrix.xy = 0x5000L;
matrix.yx = 0;
matrix.yy = 0x10000L;
FT_Glyph_Transform(fglyph, &matrix, NULL);
}
/* embolden */
if (flags & _LIBAROMA_TEXTCHUNK_BOLD) {
FT_Outline_Embolden(
&((FT_OutlineGlyph) fglyph)->outline,
aglyph->size * 2
);
}
/* convert glyph to bitmap glyph */
if (FT_Glyph_To_Bitmap(&fglyph, _LIBAROMA_FONT_RENDER_FLAG, 0, 1)!=0){
/* release glyph */
printf("[FT] FR:%i\n",aglyph->codepoint);
FT_Done_Glyph(fglyph);
_libaroma_font_lock(0);
return 0;
}
/* as bitmap glyph */
FT_BitmapGlyph bit = (FT_BitmapGlyph) fglyph;
/* prepare locations */
/*int yy;*/
typeof(bit->bitmap.rows) yy;
int xpos = x + bit->left;
int xstart = 0;
if (xpos < 0) {
xstart = 0 - xpos;
xpos = 0;
}
/* loop */
#ifndef LIBAROMA_CONFIG_NOFONT_SUBPIXEL
int draw_w = (bit->bitmap.width / 3) - xstart;
if (draw_w + xpos > dest->w) {
draw_w = dest->w - xpos;
}
if (draw_w > 0) {
wordp tmp_dst = NULL;
if (opacity != 0xff) {
tmp_dst = (wordp) malloc(draw_w * 2);
}
for (yy = 0; yy < bit->bitmap.rows; yy++) {
/* drawing positions */
int yglp = (yy - bit->top);
int ypos = (y + yglp) * dest->l;
/* check position */
if ((ypos+draw_w>(dest->l*dest->h)) || (ypos<0)) {
continue;
}
/* source * destination pointers */
int ysrc = yy * bit->bitmap.pitch;
bytep src_line = bit->bitmap.buffer + ysrc + (xstart * 3);
wordp dest_line = dest->data + ypos + xpos;
/* draw line */
if (opacity == 0xff) {
libaroma_alpha_multi_line(
draw_w, dest_line, dest_line, color, src_line);
}
else {
libaroma_alpha_multi_line(
draw_w, tmp_dst, dest_line, color, src_line);
libaroma_alpha_const(
draw_w, dest_line, dest_line, tmp_dst, opacity);
}
}
if (tmp_dst) {
free(tmp_dst);
}
}
#else
int draw_w = bit->bitmap.width - xstart;
if (draw_w + xpos > dest->w) {
draw_w = dest->w - xpos;
}
if (draw_w > 0) {
wordp tmp_dst = NULL;
if (opacity != 0xff) {
tmp_dst = (wordp) malloc(draw_w * 2);
}
/* line */
for (yy = 0; yy < bit->bitmap.rows; yy++) {
/* drawing positions */
int yglp = (yy - bit->top);
int ypos = (y + yglp) * dest->l;
/* check position */
if ((ypos+draw_w>(dest->l*dest->h)) || (ypos<0)) {
continue;
}
/* source & destination pointers */
int ysrc = yy * bit->bitmap.pitch;
bytep src_line = bit->bitmap.buffer + ysrc + xstart;
wordp dest_line = dest->data + ypos + xpos;
/* draw line */
if (opacity == 0xff) {
libaroma_alpha_mono(
draw_w, dest_line, dest_line, color, src_line);
}
else {
libaroma_alpha_mono(
draw_w, tmp_dst, dest_line, color, src_line);
libaroma_alpha_const(
draw_w, dest_line, dest_line, tmp_dst, opacity);
}
}
if (tmp_dst) {
free(tmp_dst);
}
}
#endif
/* release glyph */
FT_Done_Glyph(fglyph);
_libaroma_font_lock(0);
return 1;
} /* End of libaroma_font_glyph_draw */
Glyph Font::loadGlyph(Uint32 codePoint, unsigned int characterSize, bool bold) const
{
// 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
if (FT_Load_Char(face, codePoint, FT_LOAD_TARGET_NORMAL | FT_LOAD_FORCE_AUTOHINT) != 0)
return glyph;
// Retrieve the glyph
FT_Glyph glyphDesc;
if (FT_Get_Glyph(face->glyph, &glyphDesc) != 0)
return glyph;
// Apply bold if necessary -- first technique using outline (highest quality)
FT_Pos weight = 1 << 6;
bool outline = (glyphDesc->format == FT_GLYPH_FORMAT_OUTLINE);
if (bold && outline)
{
FT_OutlineGlyph outlineGlyph = (FT_OutlineGlyph)glyphDesc;
FT_Outline_Embolden(&outlineGlyph->outline, weight);
}
// 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 (bold && !outline)
{
FT_Bitmap_Embolden(static_cast<FT_Library>(m_library), &bitmap, weight, weight);
}
// 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);
glyph.bounds.height = static_cast<float>(face->glyph->metrics.height) / static_cast<float>(1 << 6);
// 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)
glCheck(glFlush());
// Done :)
return glyph;
}
static void loadglyph(font_t *f, glui32 cid)
{
FT_Vector v;
int err;
glui32 gid;
int x;
bitmap_t glyphs[GLI_SUBPIX];
int adv;
gid = FT_Get_Char_Index(f->face, cid);
if (gid == 0)
gid = FT_Get_Char_Index(f->face, '?');
for (x = 0; x < GLI_SUBPIX; x++)
{
v.x = (x * 64) / GLI_SUBPIX;
v.y = 0;
FT_Set_Transform(f->face, 0, &v);
err = FT_Load_Glyph(f->face, gid,
FT_LOAD_NO_BITMAP | FT_LOAD_NO_HINTING);
if (err)
winabort("FT_Load_Glyph");
if (f->make_bold)
FT_Outline_Embolden(&f->face->glyph->outline, FT_MulFix(f->face->units_per_EM, f->face->size->metrics.y_scale) / 24);
if (f->make_oblique)
FT_Outline_Transform(&f->face->glyph->outline, &ftmat);
if (gli_conf_lcd)
err = FT_Render_Glyph(f->face->glyph, FT_RENDER_MODE_LCD);
else
err = FT_Render_Glyph(f->face->glyph, FT_RENDER_MODE_LIGHT);
if (err)
winabort("FT_Render_Glyph");
adv = (f->face->glyph->advance.x * GLI_SUBPIX + 32) / 64;
glyphs[x].lsb = f->face->glyph->bitmap_left;
glyphs[x].top = f->face->glyph->bitmap_top;
glyphs[x].w = f->face->glyph->bitmap.width;
glyphs[x].h = f->face->glyph->bitmap.rows;
glyphs[x].pitch = f->face->glyph->bitmap.pitch;
glyphs[x].data =
malloc(glyphs[x].pitch * glyphs[x].h);
if (gli_conf_lcd)
gammacopy_lcd(glyphs[x].data,
f->face->glyph->bitmap.buffer,
glyphs[x].w, glyphs[x].h, glyphs[x].pitch);
else
gammacopy(glyphs[x].data,
f->face->glyph->bitmap.buffer,
glyphs[x].pitch * glyphs[x].h);
}
if (cid < 256)
{
f->lowloaded[cid/8] |= (1 << (cid%8));
f->lowadvs[cid] = adv;
memcpy(f->lowglyphs[cid], glyphs, sizeof glyphs);
}
else
{
int idx = findhighglyph(cid, f->highentries, f->num_highentries);
if (idx < 0)
{
idx = ~idx;
/* make room if needed */
if (f->alloced_highentries == f->num_highentries)
{
fentry_t *newentries;
int newsize = f->alloced_highentries * 2;
if (!newsize)
newsize = 2;
newentries = malloc(newsize * sizeof(fentry_t));
if (!newentries)
return;
if (f->highentries)
{
memcpy(newentries, f->highentries, f->num_highentries * sizeof(fentry_t));
free(f->highentries);
}
f->highentries = newentries;
f->alloced_highentries = newsize;
}
/* insert new glyph */
memmove(&f->highentries[idx+1], &f->highentries[idx], (f->num_highentries - idx) * sizeof(fentry_t));
f->highentries[idx].cid = cid;
f->highentries[idx].adv = adv;
memcpy(f->highentries[idx].glyph, glyphs, sizeof glyphs);
f->num_highentries++;
}
}
}
int
_PGFT_LoadGlyph(FontGlyph *glyph, PGFT_char character,
const FontRenderMode *mode, void *internal)
{
static FT_Vector delta = {0, 0};
FT_Render_Mode rmode = (mode->render_flags & FT_RFLAG_ANTIALIAS ?
FT_RENDER_MODE_NORMAL : FT_RENDER_MODE_MONO);
FT_Vector strong_delta = {0, 0};
FT_Glyph image = 0;
FT_Glyph_Metrics *ft_metrics;
TextContext *context = (TextContext *)internal;
FT_UInt32 load_flags;
FT_UInt gindex;
FT_Fixed rotation_angle = mode->rotation_angle;
/* FT_Matrix transform; */
FT_Vector h_bearing_rotated;
FT_Vector v_bearing_rotated;
FT_Vector h_advance_rotated;
FT_Vector v_advance_rotated;
FT_Error error = 0;
/*
* Calculate the corresponding glyph index for the char
*/
gindex = FTC_CMapCache_Lookup(context->charmap, context->id,
-1, (FT_UInt32)character);
glyph->glyph_index = gindex;
/*
* Get loading information
*/
load_flags = get_load_flags(mode);
/*
* Load the glyph into the glyph slot
*/
if (FT_Load_Glyph(context->font, glyph->glyph_index, (FT_Int)load_flags) ||
FT_Get_Glyph(context->font->glyph, &image))
goto cleanup;
/*
* Perform any outline transformations
*/
if (mode->style & FT_STYLE_STRONG) {
FT_UShort x_ppem = context->font->size->metrics.x_ppem;
FT_Fixed bold_str;
FT_BBox before;
FT_BBox after;
bold_str = FX16_CEIL_TO_FX6(mode->strength * x_ppem);
FT_Outline_Get_CBox(&((FT_OutlineGlyph)image)->outline, &before);
if (FT_Outline_Embolden(&((FT_OutlineGlyph)image)->outline, bold_str))
goto cleanup;
FT_Outline_Get_CBox(&((FT_OutlineGlyph)image)->outline, &after);
strong_delta.x += ((after.xMax - after.xMin) -
(before.xMax - before.xMin));
strong_delta.y += ((after.yMax - after.yMin) -
(before.yMax - before.yMin));
}
if (context->do_transform) {
if (FT_Glyph_Transform(image, &context->transform, &delta)) {
goto cleanup;
}
}
/*
* Finished with outline transformations, now replace with a bitmap
*/
error = FT_Glyph_To_Bitmap(&image, rmode, 0, 1);
if (error) {
goto cleanup;
}
if (mode->style & FT_STYLE_WIDE) {
FT_Bitmap *bitmap = &((FT_BitmapGlyph)image)->bitmap;
int w = bitmap->width;
FT_UShort x_ppem = context->font->size->metrics.x_ppem;
FT_Pos x_strength;
x_strength = FX16_CEIL_TO_FX6(mode->strength * x_ppem);
/* FT_Bitmap_Embolden returns an error for a zero width bitmap */
if (w > 0) {
error = FT_Bitmap_Embolden(context->lib, bitmap,
x_strength, (FT_Pos)0);
if (error) {
goto cleanup;
}
strong_delta.x += INT_TO_FX6(bitmap->width - w);
}
else {
strong_delta.x += x_strength;
}
}
/* Fill the glyph */
ft_metrics = &context->font->glyph->metrics;
h_advance_rotated.x = ft_metrics->horiAdvance + strong_delta.x;
h_advance_rotated.y = 0;
v_advance_rotated.x = 0;
v_advance_rotated.y = ft_metrics->vertAdvance + strong_delta.y;
if (rotation_angle != 0) {
FT_Angle counter_rotation = INT_TO_FX6(360) - rotation_angle;
FT_Vector_Rotate(&h_advance_rotated, rotation_angle);
FT_Vector_Rotate(&v_advance_rotated, counter_rotation);
}
glyph->image = (FT_BitmapGlyph)image;
glyph->width = INT_TO_FX6(glyph->image->bitmap.width);
glyph->height = INT_TO_FX6(glyph->image->bitmap.rows);
h_bearing_rotated.x = INT_TO_FX6(glyph->image->left);
h_bearing_rotated.y = INT_TO_FX6(glyph->image->top);
fill_metrics(&glyph->h_metrics,
ft_metrics->horiBearingX,
ft_metrics->horiBearingY,
&h_bearing_rotated, &h_advance_rotated);
if (rotation_angle == 0) {
v_bearing_rotated.x = ft_metrics->vertBearingX - strong_delta.x / 2;
v_bearing_rotated.y = ft_metrics->vertBearingY;
}
else {
/*
* Adjust the vertical metrics.
*/
FT_Vector v_origin;
v_origin.x = (glyph->h_metrics.bearing_x -
ft_metrics->vertBearingX + strong_delta.x / 2);
v_origin.y = (glyph->h_metrics.bearing_y +
ft_metrics->vertBearingY);
FT_Vector_Rotate(&v_origin, rotation_angle);
v_bearing_rotated.x = glyph->h_metrics.bearing_rotated.x - v_origin.x;
v_bearing_rotated.y = v_origin.y - glyph->h_metrics.bearing_rotated.y;
}
fill_metrics(&glyph->v_metrics,
ft_metrics->vertBearingX,
ft_metrics->vertBearingY,
&v_bearing_rotated, &v_advance_rotated);
return 0;
/*
* Cleanup on error
*/
cleanup:
if (image) {
FT_Done_Glyph(image);
}
return -1;
}
static say_glyph *say_font_load_glyph(say_font *font, say_font_page *page,
uint32_t codepoint, uint8_t bold,
size_t size) {
uint32_t bold_codepoint = ((bold ? 1 : 0) << 31) | codepoint;
say_glyph *glyph = malloc(sizeof(say_glyph));
say_table_set(page->glyphs, bold_codepoint, glyph);
glyph->offset = 0;
glyph->bounds = say_make_rect(2, 0, 2, 2);
glyph->sub_rect = say_make_rect(2, 0, 2, 2);
if (!(font->face && say_font_set_size(font, size)))
return glyph;
if (FT_Load_Char(font->face, codepoint, FT_LOAD_TARGET_NORMAL) != 0)
return glyph;
FT_Glyph ft_glyph;
if (FT_Get_Glyph(font->face->glyph, &ft_glyph) != 0)
return glyph;
FT_Pos weight = 1 << 6;
uint8_t outline = ft_glyph->format == FT_GLYPH_FORMAT_OUTLINE;
if (bold && outline) {
FT_OutlineGlyph outline_glyph = (FT_OutlineGlyph)ft_glyph;
FT_Outline_Embolden(&outline_glyph->outline, weight);
}
FT_Glyph_To_Bitmap(&ft_glyph, FT_RENDER_MODE_NORMAL, 0, 1);
FT_BitmapGlyph bitmap_glyph = (FT_BitmapGlyph)ft_glyph;
FT_Bitmap *bitmap = &bitmap_glyph->bitmap;
if (bold && !outline) {
FT_Bitmap_Embolden(font->library, bitmap, weight, weight);
}
glyph->offset = ft_glyph->advance.x >> 16;
if (bold)
glyph->offset += weight >> 6;
int width = bitmap->width;
int height = bitmap->rows;
if (width > 0 && height > 0) {
static const int padding = 1;
glyph->sub_rect = say_page_find_rect(page,
width + (2 * padding),
height + (2 * padding));
glyph->bounds.x = +bitmap_glyph->left - padding;
glyph->bounds.y = -bitmap_glyph->top - padding;
glyph->bounds.w = width + (2 * padding);
glyph->bounds.h = height + (2 * padding);
say_rect actual_rect = glyph->sub_rect;
actual_rect.x += padding;
actual_rect.y += padding;
actual_rect.w -= 2 * padding;
actual_rect.h -= 2 * padding;
uint8_t *pixels = bitmap->buffer;
if (bitmap->pixel_mode == FT_PIXEL_MODE_MONO) {
for (int y = actual_rect.y; y < actual_rect.y + actual_rect.h; y++) {
for (int x = actual_rect.x; x < actual_rect.x + actual_rect.w; x++) {
int pixel_x = x - actual_rect.x;
uint8_t alpha = ((pixels[pixel_x / 8]) &
(1 << (7 - (pixel_x % 8)))) ? 255 : 0;
say_image_set(page->image, x, y,
say_make_color(255, 255, 255, alpha));
}
pixels += bitmap->pitch;
}
}
else {
for (int y = actual_rect.y; y < actual_rect.y + actual_rect.h;
y++) {
for (int x = actual_rect.x; x < actual_rect.x + actual_rect.w;
x++) {
int pixel_x = x - actual_rect.x;
say_image_set(page->image, x, y,
say_make_color(255, 255, 255, pixels[pixel_x]));
}
pixels += bitmap->pitch;
}
}
}
FT_Done_Glyph(ft_glyph);
return glyph;
}
Glyph Font::loadGlyph(Uint32 codePoint, unsigned int characterSize, bool bold, float outlineThickness) const
{
// 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, true);
}
}
// 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;
width += 2 * padding;
height += 2 * padding;
// 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, height);
// 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;
// Resize the pixel buffer to the new size and fill it with transparent white pixels
m_pixelBuffer.resize(width * height * 4);
Uint8* current = &m_pixelBuffer[0];
Uint8* end = current + width * height * 4;
while (current != end)
{
(*current++) = 255;
(*current++) = 255;
(*current++) = 255;
(*current++) = 0;
}
// Extract the glyph's pixels from the bitmap
const Uint8* pixels = bitmap.buffer;
if (bitmap.pixel_mode == FT_PIXEL_MODE_MONO)
{
// Pixels are 1 bit monochrome values
for (unsigned int y = padding; y < height - padding; ++y)
{
for (unsigned int x = padding; x < width - padding; ++x)
{
// The color channels remain white, just fill the alpha channel
std::size_t index = x + y * width;
m_pixelBuffer[index * 4 + 3] = ((pixels[(x - padding) / 8]) & (1 << (7 - ((x - padding) % 8)))) ? 255 : 0;
}
pixels += bitmap.pitch;
}
}
else
{
// Pixels are 8 bits gray levels
for (unsigned int y = padding; y < height - padding; ++y)
{
for (unsigned int x = padding; x < width - padding; ++x)
{
// The color channels remain white, just fill the alpha channel
std::size_t index = x + y * width;
m_pixelBuffer[index * 4 + 3] = pixels[x - padding];
}
pixels += bitmap.pitch;
}
}
// Write the pixels to the texture
unsigned int x = glyph.textureRect.left - padding;
unsigned int y = glyph.textureRect.top - padding;
unsigned int w = glyph.textureRect.width + 2 * padding;
unsigned int h = glyph.textureRect.height + 2 * padding;
page.texture.update(&m_pixelBuffer[0], w, h, x, y);
}
// Delete the FT glyph
FT_Done_Glyph(glyphDesc);
// Done :)
return glyph;
}
// ----------------------------------------------------------------------------
void FontWithFace::insertGlyph(wchar_t c, const GlyphInfo& gi)
{
assert(gi.glyph_index > 0);
assert(gi.font_number < m_face_ttf->getTotalFaces());
FT_Face cur_face = m_face_ttf->getFace(gi.font_number);
FT_GlyphSlot slot = cur_face->glyph;
// Faces may be shared across regular and bold,
// so reset dpi each time
font_manager->checkFTError(FT_Set_Pixel_Sizes(cur_face, 0, getDPI()),
"setting DPI");
font_manager->checkFTError(FT_Load_Glyph(cur_face, gi.glyph_index,
FT_LOAD_DEFAULT), "loading a glyph");
if (dynamic_cast<BoldFace*>(this))
{
// Embolden the outline of the glyph
FT_Outline_Embolden(&(slot->outline), getDPI() * 2);
}
font_manager->checkFTError(FT_Render_Glyph(slot, FT_RENDER_MODE_NORMAL),
"render a glyph to bitmap");
// Convert to an anti-aliased bitmap
FT_Bitmap bits = slot->bitmap;
core::dimension2du d(bits.width + 1, bits.rows + 1);
core::dimension2du texture_size;
texture_size = d.getOptimalSize(!(irr_driver->getVideoDriver()
->queryFeature(video::EVDF_TEXTURE_NPOT)), !(irr_driver
->getVideoDriver()->queryFeature(video::EVDF_TEXTURE_NSQUARE)),
true, 0);
if ((m_used_width + texture_size.Width > getGlyphPageSize() &&
m_used_height + m_temp_height + texture_size.Height >
getGlyphPageSize()) ||
m_used_height + texture_size.Height > getGlyphPageSize())
{
// Current glyph page is full:
// Save the old glyph page
video::ITexture* page_texture = irr_driver->getVideoDriver()
->addTexture("Glyph_page", m_page);
m_spritebank->setTexture(m_spritebank->getTextureCount() - 1,
page_texture);
irr_driver->getVideoDriver()->removeTexture(page_texture);
assert(page_texture->getReferenceCount() == 1);
// Clear and add a new one
createNewGlyphPage();
}
video::IImage* glyph = NULL;
switch (bits.pixel_mode)
{
case FT_PIXEL_MODE_GRAY:
{
// Create our blank image.
glyph = irr_driver->getVideoDriver()
->createImage(video::ECF_A8R8G8B8, texture_size);
glyph->fill(video::SColor(0, 255, 255, 255));
// Load the grayscale data in.
const float gray_count = static_cast<float>(bits.num_grays);
const unsigned int image_pitch =
glyph->getPitch() / sizeof(unsigned int);
unsigned int* image_data = (unsigned int*)glyph->lock();
unsigned char* glyph_data = bits.buffer;
for (unsigned int y = 0; y < (unsigned int)bits.rows; y++)
{
unsigned char* row = glyph_data;
for (unsigned int x = 0; x < (unsigned)bits.width; x++)
{
image_data[y * image_pitch + x] |=
static_cast<unsigned int>(255.0f *
(static_cast<float>(*row++) / gray_count)) << 24;
}
glyph_data += bits.pitch;
}
glyph->unlock();
break;
}
default:
assert(false);
}
if (!glyph)
Log::fatal("FontWithFace", "Failed to load a glyph");
// Done creating a single glyph, now copy to the glyph page...
// Determine the linebreak location
if (m_used_width + texture_size.Width > getGlyphPageSize())
{
m_used_width = 0;
m_used_height += m_temp_height;
m_temp_height = 0;
}
// Copy to the full glyph page
glyph->copyTo(m_page, core::position2di(m_used_width, m_used_height));
// Store the rectangle of current glyph
gui::SGUISpriteFrame f;
gui::SGUISprite s;
core::rect<s32> rectangle(m_used_width, m_used_height,
m_used_width + bits.width, m_used_height + bits.rows);
f.rectNumber = m_spritebank->getPositions().size();
f.textureNumber = m_spritebank->getTextureCount() - 1;
// Add frame to sprite
s.Frames.push_back(f);
s.frameTime = 0;
m_spritebank->getPositions().push_back(rectangle);
m_spritebank->getSprites().push_back(s);
// Save glyph metrics
FontArea a;
a.advance_x = cur_face->glyph->advance.x / BEARING;
a.bearing_x = cur_face->glyph->metrics.horiBearingX / BEARING;
const int cur_height = (cur_face->glyph->metrics.height / BEARING);
const int cur_offset_y = cur_height -
(cur_face->glyph->metrics.horiBearingY / BEARING);
a.offset_y = m_glyph_max_height - cur_height + cur_offset_y;
a.offset_y_bt = -cur_offset_y;
a.spriteno = f.rectNumber;
m_character_area_map[c] = a;
// Clean the temporary glyph
glyph->drop();
glyph = NULL;
// Store used area
m_used_width += texture_size.Width;
if (m_temp_height < texture_size.Height)
m_temp_height = texture_size.Height;
} // insertGlyph
void CFont2D::CharToImage(const wchar_t * Chars)
{
// wchar_t InputChar;
// MultiByteToWideChar(CP_ACP,0,Chars,byteNum,&InputChar,1);
if(FT_Load_Glyph( face, FT_Get_Char_Index( face, Chars[0] ), FT_LOAD_DEFAULT ))
return;
FT_Outline_Embolden( &(face->glyph->outline), 30 );
FT_Glyph glyph;
if(FT_Get_Glyph( face->glyph, &glyph ))
return;
FT_Glyph_To_Bitmap( &glyph, ft_render_mode_normal, 0, 1 );
FT_BitmapGlyph bitmap_glyph = (FT_BitmapGlyph)glyph;
FT_Bitmap& bitmap=bitmap_glyph->bitmap;
if(bitmap.width>=OnefontW)
OneCharWidth[CharNum]=1.0f;
else
OneCharWidth[CharNum]=float(bitmap.width)/float(OnefontW);
if(Chars[0]==L' ')
OneCharWidth[CharNum]=0.5f;
CharNum=CharNum+1;
int Ymove=0;
if(Chars[0]<0x80)
Ymove=bitmap.rows/6;
if(Chars[0]==L'-')
Ymove=OnefontH/2-bitmap.rows*2;
if(Chars[0]==L'.')
Ymove=bitmap.rows/2;
for(int j=Ymove; j <OnefontH;j++) {
for(int i=0; i < OnefontW; i++){
OnefontData[i+(j-Ymove)*OnefontW] = (i>=bitmap.width || j<(OnefontH-bitmap.rows)) ? 0 : bitmap.buffer[i + bitmap.width*(j-OnefontH+bitmap.rows)];
}
}
for(int j=OnefontH-Ymove; j <OnefontH;j++) {
for(int i=0; i < OnefontW; i++){
OnefontData[i+(j)*OnefontW] = 0;
}
}
glBindTexture(GL_TEXTURE_2D, TexID);
glTexSubImage2D(
GL_TEXTURE_2D,
0,
FontPosX,
FontPosY,
OnefontW,
OnefontH,
GL_ALPHA,
GL_UNSIGNED_BYTE,
OnefontData);
FontPosX=FontPosX+OnefontW;
if(FontPosX>=FontTexW)
{
FontPosX=0;
FontPosY=FontPosY+OnefontH;
if(FontPosY>=FontTexH)
FontPosY=FontTexH;
}
FT_Done_Glyph(glyph);
}
static PyObject*
Py_Outline_decompose(Py_Outline* self, PyObject* args, PyObject* kwds)
{
/* TODO: Also implement this as an iterator */
DecomposeData data;
PyObject *obj;
const FT_Outline_Funcs funcs = {
.move_to = Py_Outline_moveto_func,
.line_to = Py_Outline_lineto_func,
.conic_to = Py_Outline_conicto_func,
.cubic_to = Py_Outline_cubicto_func,
.shift = 0,
.delta = 0
};
int error;
const char* keywords[] = {"obj", "shift", "delta", NULL};
if (!PyArg_ParseTupleAndKeywords(
args, kwds, "O|ii:decompose", (char **)keywords,
&obj, &funcs.shift, &funcs.delta)) {
return NULL;
}
if (!PyObject_HasAttrString(obj, "move_to")) {
PyErr_SetString(PyExc_AttributeError, "obj has no move_to method");
return NULL;
}
if (!PyObject_HasAttrString(obj, "line_to")) {
PyErr_SetString(PyExc_AttributeError, "obj has no line_to method");
return NULL;
}
if (!PyObject_HasAttrString(obj, "cubic_to")) {
PyErr_SetString(PyExc_AttributeError, "obj has no cubic_to method");
return NULL;
}
data.has_conic_to = PyObject_HasAttrString(obj, "conic_to");
data.callback = obj;
data.last_x = 0;
data.last_y = 0;
error = FT_Outline_Decompose(&self->x, &funcs, &data);
if (PyErr_Occurred()) {
return NULL;
} else if (ftpy_exc(error)) {
return NULL;
}
Py_RETURN_NONE;
};
static PyObject*
Py_Outline_embolden(Py_Outline* self, PyObject* args, PyObject* kwds)
{
double strength;
const char* keywords[] = {"strength", NULL};
if (!PyArg_ParseTupleAndKeywords(
args, kwds, "d:embolden", (char **)keywords,
&strength)) {
return NULL;
}
if (ftpy_exc(
FT_Outline_Embolden(&self->x, TO_F26DOT6(strength)))) {
return NULL;
}
Py_RETURN_NONE;
};
int DrawGlyph(
_In_ wchar_t c,
_In_ int pixel_size,
_Out_ _Notnull_ int* pitch,
_Out_ _Notnull_ int* rows,
_Out_ _Notnull_ int* advance,
_Out_ _Notnull_ int* horiBearingY,
_Inout_ _Notnull_ unsigned char** ppBitmap
)
{
FT_Error error;
FT_UInt glyph_index;
glyph_index = FT_Get_Char_Index(face, c);
error = FT_Set_Pixel_Sizes(face, 0, pixel_size);
if (error)
{
return error;
}
error = FT_Load_Glyph(face, glyph_index, FT_LOAD_DEFAULT);
if (error)
{
return error;
}
if (face->glyph->format == FT_GLYPH_FORMAT_OUTLINE)
{
FT_Pos strength = 30;
error = FT_Outline_Embolden(&face->glyph->outline, strength);
if (error)
{
//cl_debug_output("Font Embolden failed.");
DebugBreak();
}
}
/*
FT_Matrix matrix;
matrix.xx = 0x07FFFL;
matrix.xy = 0;
matrix.yx = 0;
matrix.yy = 0x10000L;
FT_Set_Transform(face, &matrix, 0);
*/
error = FT_Render_Glyph(face->glyph, FT_RENDER_MODE_NORMAL);
if (error)
{
return error;
}
*ppBitmap = (unsigned char*)malloc(face->glyph->bitmap.rows * face->glyph->bitmap.pitch);
memcpy(*ppBitmap, face->glyph->bitmap.buffer,
face->glyph->bitmap.rows * face->glyph->bitmap.pitch);
*pitch = face->glyph->bitmap.pitch;
*rows = face->glyph->bitmap.rows;
*advance = face->glyph->advance.x / 64;
*horiBearingY = face->glyph->metrics.horiBearingY / 64;
return error;
}