int
test_get_cbox( btimer_t* timer,
FT_Face face,
void* user_data )
{
FT_Glyph glyph;
FT_BBox bbox;
int i, done = 0;
FT_UNUSED( user_data );
for ( i = 0; i < face->num_glyphs; i++ )
{
if ( FT_Load_Glyph( face, i, load_flags ) )
continue;
if ( FT_Get_Glyph( face->glyph, &glyph ) )
continue;
TIMER_START( timer );
FT_Glyph_Get_CBox( glyph, FT_GLYPH_BBOX_PIXELS, &bbox );
TIMER_STOP( timer );
FT_Done_Glyph( glyph );
done++;
}
return done;
}
Glyph::Glyph( const FT_Face& face, const FT_Glyph& glyph, size_t ind) :
glyphInd(ind) {
_VERBOSE("Glyph::Glyph");
FT_BBox bbox;
FT_Glyph_Get_CBox( glyph, ft_glyph_bbox_subpixels, &bbox );
setattr("width", Py::Int( face->glyph->metrics.width) );
setattr("height", Py::Int( face->glyph->metrics.height) );
setattr("horiBearingX", Py::Int( face->glyph->metrics.horiBearingX) );
setattr("horiBearingY", Py::Int( face->glyph->metrics.horiBearingY) );
setattr("horiAdvance", Py::Int( face->glyph->metrics.horiAdvance) );
setattr("vertBearingX", Py::Int( face->glyph->metrics.vertBearingX) );
setattr("vertBearingY", Py::Int( face->glyph->metrics.vertBearingY) );
setattr("vertAdvance", Py::Int( face->glyph->metrics.vertAdvance) );
Py::Tuple abbox(4);
abbox[0] = Py::Int(bbox.xMin);
abbox[1] = Py::Int(bbox.yMin);
abbox[2] = Py::Int(bbox.xMax);
abbox[3] = Py::Int(bbox.yMax);
setattr("bbox", abbox);
}
static FT_Error freetype2_get_glyph_size(PFontFreetype pf,
FT_Face face,
int glyph_index,
int *padvance,
int *pascent,
int *pdescent)
{
FT_Error error;
error = FT_Load_Glyph(face, glyph_index, FT_LOAD_DEFAULT);
if (error)
return error;
if (padvance)
*padvance = ROUND_26_6_TO_INT(face->glyph->advance.x);
if (pascent || pdescent)
{
FT_Glyph glyph;
FT_BBox bbox;
error = FT_Get_Glyph(face->glyph, &glyph);
if (error)
return error;
FT_Glyph_Get_CBox(glyph, ft_glyph_bbox_pixels, &bbox);
FT_Done_Glyph(glyph);
if (pascent)
*pascent = bbox.yMax;
if (pdescent)
*pdescent = -bbox.yMin;
}
return 0;
}
bound_box bbox() const {//in 1/64th units
FT_BBox bb;
//FT_Glyph_Get_CBox( image, FT_GLYPH_BBOX_GRIDFIT, &bb );
//FT_Glyph_Get_CBox( image, FT_GLYPH_BBOX_TRUNCATE, &bb );
FT_Glyph_Get_CBox( image, FT_GLYPH_BBOX_PIXELS, &bb );
return bound_box(bb);
}
bool font_face::glyph_dimensions(glyph_info & glyph) const
{
FT_Vector pen;
pen.x = 0;
pen.y = 0;
FT_Set_Transform(face_, 0, &pen);
if (FT_Load_Glyph(face_, glyph.glyph_index, FT_LOAD_NO_HINTING))
{
MAPNIK_LOG_ERROR(font_face) << "FT_Load_Glyph failed";
return false;
}
FT_Glyph image;
if (FT_Get_Glyph(face_->glyph, &image))
{
MAPNIK_LOG_ERROR(font_face) << "FT_Get_Glyph failed";
return false;
}
FT_BBox glyph_bbox;
FT_Glyph_Get_CBox(image, FT_GLYPH_BBOX_TRUNCATE, &glyph_bbox);
FT_Done_Glyph(image);
glyph.unscaled_ymin = glyph_bbox.yMin;
glyph.unscaled_ymax = glyph_bbox.yMax;
glyph.unscaled_advance = face_->glyph->advance.x;
glyph.unscaled_line_height = face_->size->metrics.height;
glyph.unscaled_ascender = unscaled_ascender_;
return true;
}
//http://www.freetype.org/freetype2/docs/tutorial/step2.html
FT_Error measure_string(FT_Face face, std::string text, int size, Vector2i* size_out)
{
int pos_x = 0;
bool use_kerning = FT_HAS_KERNING(face) ? true : false;
FT_UInt prev_glyph_index = 0;
FT_BBox text_bb;
text_bb.xMax = 0;
text_bb.xMin = 0;
text_bb.yMax = 0;
text_bb.yMin = 0;
FT_Error error;
error = FT_Set_Char_Size(face, 0, size * 64, 72, 72);
for(unsigned int i = 0; i < text.length(); i++)
{
FT_UInt glyph_index = FT_Get_Char_Index(face, text.c_str()[i]);
if(use_kerning && prev_glyph_index)
{
FT_Vector delta;
FT_Get_Kerning(face, prev_glyph_index, glyph_index, FT_KERNING_DEFAULT, &delta);
pos_x += delta.x >> 6;
}
prev_glyph_index = glyph_index;
if(error = FT_Load_Glyph(face, glyph_index, FT_LOAD_DEFAULT) != FT_Err_Ok)
{
Log::Error(__FILE__, "Unable to load glyph %d", glyph_index);
return error;
}
FT_Glyph glyph;
if(error = FT_Get_Glyph(face->glyph, &glyph) != FT_Err_Ok)
{
Log::Error(__FILE__, "Unable to get glyph %d", glyph_index);
}
FT_BBox bb;
FT_Glyph_Get_CBox(glyph, ft_glyph_bbox_pixels, &bb);
bb.xMax += pos_x;
bb.xMin += pos_x;
pos_x += glyph->advance.x >> 16;
//Grow overall bounding box
if(bb.xMax > text_bb.xMax)
text_bb.xMax = bb.xMax;
if(bb.yMax > text_bb.yMax)
text_bb.yMax = bb.yMax;
if(bb.xMin < text_bb.xMin)
text_bb.xMin = bb.xMin;
if(bb.yMin < text_bb.yMin)
text_bb.yMin = bb.yMin;
FT_Done_Glyph(glyph);
}
void CBitmapFont::generateGlyph(U32 ch){
S32 pad = 3;
FT_GlyphSlot slot = mFace->glyph;
FT_Glyph glyph;
FT_UInt glyph_index;
glyph_index = FT_Get_Char_Index( mFace, (FT_ULong)ch );
FT_Load_Glyph( mFace, glyph_index, FT_LOAD_DEFAULT);
FT_Get_Glyph( slot, &glyph);
FT_Glyph_To_Bitmap(&glyph, ft_render_mode_normal, 0 ,1);
FT_BitmapGlyph bitmap = (FT_BitmapGlyph)glyph;
FT_Bitmap* source = &bitmap->bitmap;
S32 srcWidth = source->width;
S32 srcHeight = source->rows;
S32 srcPitch = source->pitch;
S32 dstWidth = srcWidth;
S32 dstHeight = srcHeight;
S32 dstPitch = srcPitch;
FT_BBox bbox;
FT_Glyph_Get_CBox( glyph, ft_glyph_bbox_pixels, &bbox);
unsigned char *src = source->buffer;
if(pen.x + srcWidth >= mTextureSize){
pen.x = 0;
pen.y += (getFontSize() * 64.0f / dpi) + pad;
}
glBindTexture(GL_TEXTURE_2D, curTex);checkGLError();
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);checkGLError();
glTexSubImage2D(GL_TEXTURE_2D, 0,
pen.x, pen.y,
srcWidth, srcHeight,
GL_ALPHA, GL_UNSIGNED_BYTE, src); checkGLError();
CTexCoord start(pen);
start /= mTextureSize;
CTexCoord end(pen.x + srcWidth, pen.y + srcHeight);
end /= mTextureSize;
//CVector2 pos(slot->bitmap_left, slot->bitmap_top);
CVector2 pos(bitmap->left, srcHeight - bitmap->top);
CVector2 size(srcWidth, srcHeight);
CVector2 advance(slot->advance.x >> 6, slot->advance.y >> 6);
mGlyphs[glyph_index] = new CBitmapGlyph(curTex, start, end, pos, size, advance);
pen.x += srcWidth + pad;
FT_Done_Glyph(glyph);
}
void drawText(const char *string,float startx,float starty)
{
float PosArray[20][2];
float TexArray[20][2];
float ScaArray[20][2];
int count = 0;
glUniform1i(TextUniform,1);
glUniform2f(TextScaleUniform,width,height);
glUniform2f(ScaleUniform,0.005,0.005);
while(*string && count < 20)
{
FT_BBox bbox;
FT_Glyph_Get_CBox( (FT_Glyph) glyphs[*string -32], FT_GLYPH_BBOX_PIXELS, &bbox );
PosArray[count][0] = startx;
PosArray[count][1] = starty + (int) bbox.yMin/200.0;
TexArray[count][0] = glyphsPos[*string -32].x;
TexArray[count][1] = glyphsPos[*string -32].y;
ScaArray[count][0] = glyphs[*string -32]->bitmap.width;
ScaArray[count][1] = glyphs[*string -32]->bitmap.rows;
startx += ((FT_Glyph) glyphs[*string -32])->advance.x/(65532.0) * 0.005;
string++, count++;
}
glDisableVertexAttribArray(0);
glBindBuffer(GL_ARRAY_BUFFER, vbo[0]);
glBufferSubData(GL_ARRAY_BUFFER,0,20 * 2 * sizeof(GLfloat),PosArray);
glVertexAttribPointer((GLuint) 0,2,GL_FLOAT,GL_FALSE,0,0);
glEnableVertexAttribArray(0);
glDisableVertexAttribArray(1);
glBindBuffer(GL_ARRAY_BUFFER,vbo[1]);
glBufferSubData(GL_ARRAY_BUFFER,0,20 * 2 * sizeof(GLfloat),TexArray);
glVertexAttribPointer((GLuint) 1,2,GL_FLOAT,GL_FALSE,0,0);
glEnableVertexAttribArray(1);
glDisableVertexAttribArray(2);
glBindBuffer(GL_ARRAY_BUFFER,vbo[2]);
glBufferSubData(GL_ARRAY_BUFFER,0,20 * 2* sizeof(GLfloat),ScaArray);
glVertexAttribPointer((GLuint) 2,2,GL_FLOAT,GL_FALSE,0,0);
glEnableVertexAttribArray(2);
glDrawElements(GL_POINTS,count,GL_UNSIGNED_BYTE,0);
glUniform1i(TextUniform,0);
}
void SubtitleRenderer::
initialize_fonts(const std::string& font_path, float font_size) {
ENFORCE(!FT_Init_FreeType(&ft_library_));
ENFORCE2(!FT_New_Face(ft_library_, font_path.c_str(), 0, &ft_face_),
"Unable to open font");
ENFORCE(!FT_Set_Pixel_Sizes(ft_face_, 0, font_size*screen_height_));
auto get_bbox = [this](char32_t cp) {
auto glyph_index = FT_Get_Char_Index(ft_face_, cp);
ENFORCE(!FT_Load_Glyph(ft_face_, glyph_index, FT_LOAD_NO_HINTING));
FT_Glyph glyph;
ENFORCE(!FT_Get_Glyph(ft_face_->glyph, &glyph));
SCOPE_EXIT {FT_Done_Glyph(glyph);};
FT_BBox bbox;
FT_Glyph_Get_CBox(glyph, FT_GLYPH_BBOX_PIXELS, &bbox);
return bbox;
};
constexpr float padding_factor = 0.05f;
int y_min = get_bbox('g').yMin;
int y_max = get_bbox('M').yMax;
y_max += -y_min*0.7f;
line_height_ = y_max - y_min;
const int v_padding = line_height_*padding_factor + 0.5f;
line_height_ += v_padding*2;
box_offset_ = y_min-v_padding;
box_h_padding_ = line_height_/5.0f + 0.5f;
constexpr float border_thickness = 0.045f;
ENFORCE(!FT_Stroker_New(ft_library_, &ft_stroker_));
FT_Stroker_Set(ft_stroker_,
line_height_*border_thickness*64.0f,
FT_STROKER_LINECAP_ROUND,
FT_STROKER_LINEJOIN_ROUND,
0);
vgSeti(VG_FILTER_FORMAT_LINEAR, VG_TRUE);
assert(!vgGetError());
vgSeti(VG_IMAGE_QUALITY, VG_IMAGE_QUALITY_NONANTIALIASED);
assert(!vgGetError());
auto create_vg_font = [](VGFont& font) {
font = vgCreateFont(128);
ENFORCE(font);
};
create_vg_font(vg_font_);
create_vg_font(vg_font_border_);
}
/**
* Load glyphs corresponding to the UTF-32 codepoint code.
*/
static int load_glyph(AVFilterContext *ctx, Glyph **glyph_ptr, uint32_t code)
{
DrawTextContext *s = ctx->priv;
Glyph *glyph;
struct AVTreeNode *node = NULL;
int ret;
/* load glyph into s->face->glyph */
if (FT_Load_Char(s->face, code, s->ft_load_flags))
return AVERROR(EINVAL);
/* save glyph */
if (!(glyph = av_mallocz(sizeof(*glyph))) ||
!(glyph->glyph = av_mallocz(sizeof(*glyph->glyph)))) {
ret = AVERROR(ENOMEM);
goto error;
}
glyph->code = code;
if (FT_Get_Glyph(s->face->glyph, glyph->glyph)) {
ret = AVERROR(EINVAL);
goto error;
}
glyph->bitmap = s->face->glyph->bitmap;
glyph->bitmap_left = s->face->glyph->bitmap_left;
glyph->bitmap_top = s->face->glyph->bitmap_top;
glyph->advance = s->face->glyph->advance.x >> 6;
/* measure text height to calculate text_height (or the maximum text height) */
FT_Glyph_Get_CBox(*glyph->glyph, ft_glyph_bbox_pixels, &glyph->bbox);
/* cache the newly created glyph */
if (!(node = av_tree_node_alloc())) {
ret = AVERROR(ENOMEM);
goto error;
}
av_tree_insert(&s->glyphs, glyph, glyph_cmp, &node);
if (glyph_ptr)
*glyph_ptr = glyph;
return 0;
error:
if (glyph)
av_freep(&glyph->glyph);
av_freep(&glyph);
av_freep(&node);
return ret;
}
static int check_glyph_area(ASS_Library *library, FT_Glyph glyph)
{
FT_BBox bbox;
long long dx, dy;
FT_Glyph_Get_CBox(glyph, FT_GLYPH_BBOX_TRUNCATE, &bbox);
dx = bbox.xMax - bbox.xMin;
dy = bbox.yMax - bbox.yMin;
if (dx * dy > 8000000) {
ass_msg(library, MSGL_WARN, "Glyph bounding box too large: %dx%dpx",
(int) dx, (int) dy);
return 1;
} else
return 0;
}
Py::Object
FT2Font::draw_glyphs_to_bitmap(const Py::Tuple & args) {
_VERBOSE("FT2Font::draw_glyphs_to_bitmap");
args.verify_length(0);
FT_BBox string_bbox = compute_string_bbox();
image.width = (string_bbox.xMax-string_bbox.xMin) / 64+2;
image.height = (string_bbox.yMax-string_bbox.yMin) / 64+2;
image.offsetx = (int)(string_bbox.xMin/64.0);
if (angle==0)
image.offsety = -image.height;
else
image.offsety = (int)(-string_bbox.yMax/64.0);
size_t numBytes = image.width*image.height;
delete [] image.buffer;
image.buffer = new unsigned char [numBytes];
for (size_t n=0; n<numBytes; n++)
image.buffer[n] = 0;
for ( size_t n = 0; n < glyphs.size(); n++ )
{
FT_BBox bbox;
FT_Glyph_Get_CBox(glyphs[n], ft_glyph_bbox_pixels, &bbox);
error = FT_Glyph_To_Bitmap(&glyphs[n],
ft_render_mode_normal,
0,
//&pos[n],
1 //destroy image;
);
if (error)
throw Py::RuntimeError("Could not convert glyph to bitmap");
FT_BitmapGlyph bitmap = (FT_BitmapGlyph)glyphs[n];
/* now, draw to our target surface (convert position) */
//bitmap left and top in pixel, string bbox in subpixel
draw_bitmap( &bitmap->bitmap,
bitmap->left-string_bbox.xMin/64,
string_bbox.yMax/64-bitmap->top+1
);
}
return Py::Object();
}
font_face_set::dimension_t font_face_set::character_dimensions(const unsigned c)
{
std::map<unsigned, dimension_t>::const_iterator itr;
itr = dimension_cache_.find(c);
if (itr != dimension_cache_.end()) {
return itr->second;
}
FT_Matrix matrix;
FT_Vector pen;
FT_Error error;
pen.x = 0;
pen.y = 0;
FT_BBox glyph_bbox;
FT_Glyph image;
glyph_ptr glyph = get_glyph(c);
FT_Face face = glyph->get_face()->get_face();
matrix.xx = (FT_Fixed)( 1 * 0x10000L );
matrix.xy = (FT_Fixed)( 0 * 0x10000L );
matrix.yx = (FT_Fixed)( 0 * 0x10000L );
matrix.yy = (FT_Fixed)( 1 * 0x10000L );
FT_Set_Transform(face, &matrix, &pen);
error = FT_Load_Glyph (face, glyph->get_index(), FT_LOAD_NO_HINTING);
if ( error )
return dimension_t(0, 0, 0);
error = FT_Get_Glyph(face->glyph, &image);
if ( error )
return dimension_t(0, 0, 0);
FT_Glyph_Get_CBox(image, ft_glyph_bbox_pixels, &glyph_bbox);
FT_Done_Glyph(image);
unsigned tempx = face->glyph->advance.x >> 6;
//std::clog << "glyph: " << glyph_index << " x: " << tempx << " y: " << tempy << std::endl;
dimension_t dim(tempx, glyph_bbox.yMax, glyph_bbox.yMin);
//dimension_cache_[c] = dim; would need an default constructor for dimension_t
dimension_cache_.insert(std::pair<unsigned, dimension_t>(c, dim));
return dim;
}
char_info font_face_set::character_dimensions(const unsigned c)
{
//Check if char is already in cache
std::map<unsigned, char_info>::const_iterator itr;
itr = dimension_cache_.find(c);
if (itr != dimension_cache_.end()) {
return itr->second;
}
FT_Matrix matrix;
FT_Vector pen;
FT_Error error;
pen.x = 0;
pen.y = 0;
FT_BBox glyph_bbox;
FT_Glyph image;
glyph_ptr glyph = get_glyph(c);
FT_Face face = glyph->get_face()->get_face();
matrix.xx = (FT_Fixed)( 1 * 0x10000L );
matrix.xy = (FT_Fixed)( 0 * 0x10000L );
matrix.yx = (FT_Fixed)( 0 * 0x10000L );
matrix.yy = (FT_Fixed)( 1 * 0x10000L );
FT_Set_Transform(face, &matrix, &pen);
error = FT_Load_Glyph (face, glyph->get_index(), FT_LOAD_NO_HINTING);
if ( error )
return char_info();
error = FT_Get_Glyph(face->glyph, &image);
if ( error )
return char_info();
FT_Glyph_Get_CBox(image, ft_glyph_bbox_pixels, &glyph_bbox);
FT_Done_Glyph(image);
unsigned tempx = face->glyph->advance.x >> 6;
char_info dim(c, tempx, glyph_bbox.yMax, glyph_bbox.yMin, face->size->metrics.height/64.0 /* >> 6 */);
dimension_cache_.insert(std::pair<unsigned, char_info>(c, dim));
return dim;
}
void SubtitleRenderer::
initialize_fonts(const std::string& font_path,
const std::string& italic_font_path,
unsigned int font_size) {
ENFORCE(!FT_Init_FreeType(&ft_library_));
ENFORCE2(!FT_New_Face(ft_library_, font_path.c_str(), 0, &ft_face_),
"Unable to open font");
ENFORCE2(!FT_New_Face(ft_library_, italic_font_path.c_str(), 0, &ft_face_italic_),
"Unable to open italic font");
ENFORCE(!FT_Set_Pixel_Sizes(ft_face_, 0, font_size));
ENFORCE(!FT_Set_Pixel_Sizes(ft_face_italic_, 0, font_size));
auto get_bbox = [this](char32_t cp) {
auto glyph_index = FT_Get_Char_Index(ft_face_, cp);
ENFORCE(!FT_Load_Glyph(ft_face_, glyph_index, FT_LOAD_NO_HINTING));
FT_Glyph glyph;
ENFORCE(!FT_Get_Glyph(ft_face_->glyph, &glyph));
SCOPE_EXIT {FT_Done_Glyph(glyph);};
FT_BBox bbox;
FT_Glyph_Get_CBox(glyph, FT_GLYPH_BBOX_PIXELS, &bbox);
return bbox;
};
constexpr float padding_factor = 0.05f;
int y_min = get_bbox('g').yMin;
int y_max = get_bbox('M').yMax;
y_max += -y_min*0.7f;
line_height_ = y_max - y_min;
const int v_padding = line_height_*padding_factor + 0.5f;
line_height_ += v_padding*2;
box_offset_ = y_min-v_padding;
box_h_padding_ = line_height_/5.0f + 0.5f;
constexpr float border_thickness = 0.044f;
ENFORCE(!FT_Stroker_New(ft_library_, &ft_stroker_));
FT_Stroker_Set(ft_stroker_,
line_height_*border_thickness*64.0f,
FT_STROKER_LINECAP_ROUND,
FT_STROKER_LINEJOIN_ROUND,
0);
}
void ComputeStringBox( FT_BBox& Box, FT_Glyph* GlyphList,FT_Vector* PosList, const int GlyphCount )
{
/* initialize string bbox to "empty" values */
Box.xMin = Box.yMin = 32000;
Box.xMax = Box.yMax = -32000;
/* for each glyph image, compute its bounding box, */
/* translate it, and grow the string bbox */
for ( int n = 0; n < GlyphCount; n++ )
{
FT_BBox GlyphBox;
FT_Glyph_Get_CBox( GlyphList[n], ft_glyph_bbox_pixels, &GlyphBox );
GlyphBox.xMin += PosList[n].x;
GlyphBox.xMax += PosList[n].x;
GlyphBox.yMin += PosList[n].y;
GlyphBox.yMax += PosList[n].y;
if ( GlyphBox.xMin < Box.xMin )
Box.xMin = GlyphBox.xMin;
if ( GlyphBox.yMin < Box.yMin )
Box.yMin = GlyphBox.yMin;
if ( GlyphBox.xMax > Box.xMax )
Box.xMax = GlyphBox.xMax;
if ( GlyphBox.yMax > Box.yMax )
Box.yMax = GlyphBox.yMax;
}
/* check that we really grew the string bbox */
if ( Box.xMin > Box.xMax )
{
Box.xMin = 0;
Box.yMin = 0;
Box.xMax = 0;
Box.yMax = 0;
}
};
void
XeTeXFontInst_FT2::getGlyphBounds(LEGlyphID gid, GlyphBBox* bbox)
{
bbox->xMin = bbox->yMin = bbox->xMax = bbox->yMax = 0.0;
FT_Error err = FT_Load_Glyph(face, gid, FT_LOAD_NO_SCALE);
if (err != 0)
return;
FT_Glyph glyph;
err = FT_Get_Glyph(face->glyph, &glyph);
if (err == 0) {
FT_BBox ft_bbox;
FT_Glyph_Get_CBox(glyph, FT_GLYPH_BBOX_UNSCALED, &ft_bbox);
bbox->xMin = ft_bbox.xMin * fPointSize / fUnitsPerEM;
bbox->yMin = ft_bbox.yMin * fPointSize / fUnitsPerEM;
bbox->xMax = ft_bbox.xMax * fPointSize / fUnitsPerEM;
bbox->yMax = ft_bbox.yMax * fPointSize / fUnitsPerEM;
FT_Done_Glyph(glyph);
}
}
void
XeTeXFontInst::getGlyphBounds(GlyphID gid, GlyphBBox* bbox)
{
bbox->xMin = bbox->yMin = bbox->xMax = bbox->yMax = 0.0;
FT_Error error = FT_Load_Glyph(m_ftFace, gid, FT_LOAD_NO_SCALE);
if (error)
return;
FT_Glyph glyph;
error = FT_Get_Glyph(m_ftFace->glyph, &glyph);
if (error == 0) {
FT_BBox ft_bbox;
FT_Glyph_Get_CBox(glyph, FT_GLYPH_BBOX_UNSCALED, &ft_bbox);
bbox->xMin = unitsToPoints(ft_bbox.xMin);
bbox->yMin = unitsToPoints(ft_bbox.yMin);
bbox->xMax = unitsToPoints(ft_bbox.xMax);
bbox->yMax = unitsToPoints(ft_bbox.yMax);
FT_Done_Glyph(glyph);
}
}
Size FontEngine_Freetype::get_size(const std::string &text, int pos)
{
FT_UInt glyph_index;
// Get glyph index
glyph_index = FT_Get_Char_Index(face, text[pos]);
// Load glyph image
FT_Error error = FT_Load_Glyph(face, glyph_index, FT_LOAD_DEFAULT );
if (error) return Size(0,0);
FT_Glyph glyph;
FT_BBox bbox;
FT_Get_Glyph(face->glyph, &glyph);
FT_Glyph_Get_CBox( glyph, FT_GLYPH_BBOX_PIXELS, &bbox );
int y = bbox.yMax + bbox.yMin; // Include the whitespace, to match the windows GetTextExtentPoint32()
int x = int(face->glyph->advance.x / 64.0f);
return (Size(x,y));
}
static void compute_glyphstring_bbox(FT_Glyph *string, FT_Vector *pos,
int len, FT_BBox *bbox)
{
FT_BBox glyph_bbox;
int i;
bbox->xMin = bbox->yMin = 32000;
bbox->xMax = bbox->yMax = -32000;
for (i = 0; i < len; i++)
{
FT_Glyph_Get_CBox(string[i], FT_GLYPH_BBOX_GRIDFIT, &glyph_bbox);
glyph_bbox.xMin += pos[i].x;
glyph_bbox.xMax += pos[i].x;
glyph_bbox.yMin += pos[i].y;
glyph_bbox.yMax += pos[i].y;
if (glyph_bbox.xMin < bbox->xMin)
bbox->xMin = glyph_bbox.xMin;
if (glyph_bbox.xMax > bbox->xMax)
bbox->xMax = glyph_bbox.xMax;
if (glyph_bbox.yMin < bbox->yMin)
bbox->yMin = glyph_bbox.yMin;
if (glyph_bbox.yMax > bbox->yMax)
bbox->yMax = glyph_bbox.yMax;
}
if (bbox->xMin > bbox->xMax || bbox->yMin > bbox->yMax)
{
bbox->xMin = 0;
bbox->xMax = 0;
bbox->yMin = 0;
bbox->yMax = 0;
}
}
void calculate_extents(box* b, hb_glyph_info_t glyph_info, hb_glyph_position_t glyph_pos, FT_Face ft_face, double point_size, hb_direction_t direction) {
FT_Error error = FT_Load_Glyph(ft_face, glyph_info.codepoint, FT_LOAD_NO_SCALE);
if (error) return;
FT_Glyph glyph;
error = FT_Get_Glyph(ft_face->glyph, &glyph);
if (error) return;
FT_BBox ft_bbox;
FT_Glyph_Get_CBox(glyph, FT_GLYPH_BBOX_UNSCALED, &ft_bbox);
FT_Fixed advance;
FT_Get_Advance(ft_face, glyph_info.codepoint, FT_LOAD_NO_SCALE, &advance);
const FT_Glyph_Metrics *ftmetrics = &ft_face->glyph->metrics;
b->width = advance * point_size / ft_face->units_per_EM;
if (direction == HB_DIRECTION_TTB) {
FT_Get_Advance(ft_face, glyph_info.codepoint, FT_LOAD_NO_SCALE | FT_LOAD_VERTICAL_LAYOUT, &advance);
b->height = advance * point_size / ft_face->units_per_EM;
b->depth = 0;
} else {
b->height = ft_bbox.yMax * point_size / ft_face->units_per_EM;
b->depth = -ft_bbox.yMin * point_size / ft_face->units_per_EM;
}
FT_Done_Glyph(glyph);
}
FT_BBox
FT2Font::compute_string_bbox( ) {
_VERBOSE("FT2Font::compute_string_bbox");
FT_BBox bbox;
/* initialize string bbox to "empty" values */
bbox.xMin = bbox.yMin = 32000;
bbox.xMax = bbox.yMax = -32000;
for ( size_t n = 0; n < glyphs.size(); n++ ) {
FT_BBox glyph_bbox;
FT_Glyph_Get_CBox( glyphs[n], ft_glyph_bbox_subpixels, &glyph_bbox );
if ( glyph_bbox.xMin < bbox.xMin ) bbox.xMin = glyph_bbox.xMin;
if ( glyph_bbox.yMin < bbox.yMin ) bbox.yMin = glyph_bbox.yMin;
if ( glyph_bbox.xMax > bbox.xMax ) bbox.xMax = glyph_bbox.xMax;
if ( glyph_bbox.yMax > bbox.yMax ) bbox.yMax = glyph_bbox.yMax;
} /* check that we really grew the string bbox */
if ( bbox.xMin > bbox.xMax ) {
bbox.xMin = 0; bbox.yMin = 0; bbox.xMax = 0; bbox.yMax = 0;
} /* return string bbox */
return bbox;
}
// https://github.com/mapnik/mapnik/issues/2578
double font_face::get_ascender()
{
set_unscaled_character_sizes();
unsigned glyph_index = FT_Get_Char_Index(face_, 'X');
FT_Vector pen;
pen.x = 0;
pen.y = 0;
FT_Set_Transform(face_, 0, &pen);
int e = 0;
if (!(e = FT_Load_Glyph(face_, glyph_index, FT_LOAD_NO_HINTING)))
{
FT_Glyph image;
if (!FT_Get_Glyph(face_->glyph, &image))
{
FT_BBox glyph_bbox;
FT_Glyph_Get_CBox(image, FT_GLYPH_BBOX_TRUNCATE, &glyph_bbox);
FT_Done_Glyph(image);
return 64.0 * (glyph_bbox.yMax - glyph_bbox.yMin);
}
}
return face_->ascender;
}
void FT::computeBBox(ft_string *string)
{
int n;
/* initialize string bbox to "empty" values */
string->bbox.xMin = string->bbox.yMin = 32000;
string->bbox.xMax = string->bbox.yMax = -32000;
/* for each glyph image, compute its bounding box, */
/* translate it, and grow the string bbox */
for (n = 0; n < string->num_glyphs; n++)
{
FT_BBox glyph_bbox;
FT_Glyph_Get_CBox(string->glyphs[n].image, ft_glyph_bbox_pixels,
&glyph_bbox);
if (glyph_bbox.xMin < string->bbox.xMin)
string->bbox.xMin = glyph_bbox.xMin;
if (glyph_bbox.yMin < string->bbox.yMin)
string->bbox.yMin = glyph_bbox.yMin;
if (glyph_bbox.xMax > string->bbox.xMax)
string->bbox.xMax = glyph_bbox.xMax;
if (glyph_bbox.yMax > string->bbox.yMax)
string->bbox.yMax = glyph_bbox.yMax;
}
/* check that we really grew the string bbox */
if (string->bbox.xMin > string->bbox.xMax)
{
string->bbox.xMin = 0;
string->bbox.yMin = 0;
string->bbox.xMax = 0;
string->bbox.yMax = 0;
}
}
static GF_Glyph *ft_load_glyph(GF_FontReader *dr, u32 glyph_name)
{
GF_Glyph *glyph;
u32 glyph_idx;
FT_BBox bbox;
FT_OutlineGlyph outline;
ft_outliner outl;
FT_Outline_Funcs ft_outl_funcs;
FTBuilder *ftpriv = (FTBuilder *)dr->udta;
if (!ftpriv->active_face || !glyph_name) return NULL;
FT_Select_Charmap(ftpriv->active_face, FT_ENCODING_UNICODE);
glyph_idx = FT_Get_Char_Index(ftpriv->active_face, glyph_name);
/*missing glyph*/
if (!glyph_idx) {
GF_LOG(GF_LOG_WARNING, GF_LOG_PARSER, ("[FreeType] Glyph not found for char %d in font %s (style %s)\n", glyph_name, ftpriv->active_face->family_name, ftpriv->active_face->style_name));
return NULL;
}
/*work in design units*/
FT_Load_Glyph(ftpriv->active_face, glyph_idx, FT_LOAD_NO_SCALE | FT_LOAD_NO_BITMAP);
FT_Get_Glyph(ftpriv->active_face->glyph, (FT_Glyph*)&outline);
#ifdef FT_GLYPH_FORMAT_OUTLINE
/*oops not vectorial...*/
if (outline->root.format != FT_GLYPH_FORMAT_OUTLINE) return NULL;
#endif
GF_SAFEALLOC(glyph, GF_Glyph);
GF_SAFEALLOC(glyph->path, GF_Path);
/*setup outliner*/
ft_outl_funcs.shift = 0;
ft_outl_funcs.delta = 0;
ft_outl_funcs.move_to = ft_move_to;
ft_outl_funcs.line_to = ft_line_to;
ft_outl_funcs.conic_to = ft_conic_to;
ft_outl_funcs.cubic_to = ft_cubic_to;
outl.path = glyph->path;
outl.ftpriv = ftpriv;
/*FreeType is marvelous and gives back the right advance on space char !!!*/
FT_Outline_Decompose(&outline->outline, &ft_outl_funcs, &outl);
FT_Glyph_Get_CBox((FT_Glyph) outline, ft_glyph_bbox_unscaled, &bbox);
glyph->ID = glyph_name;
glyph->utf_name = glyph_name;
glyph->horiz_advance = ftpriv->active_face->glyph->metrics.horiAdvance;
glyph->vert_advance = ftpriv->active_face->glyph->metrics.vertAdvance;
/*
glyph->x = bbox.xMin;
glyph->y = bbox.yMax;
*/
glyph->width = ftpriv->active_face->glyph->metrics.width;
glyph->height = ftpriv->active_face->glyph->metrics.height;
FT_Done_Glyph((FT_Glyph) outline);
return glyph;
}
/**
* Load glyphs corresponding to the UTF-32 codepoint code.
*/
static int load_glyph(AVFilterContext *ctx, Glyph **glyph_ptr, uint32_t code)
{
DrawTextContext *s = ctx->priv;
FT_BitmapGlyph bitmapglyph;
Glyph *glyph;
struct AVTreeNode *node = NULL;
int ret;
/* load glyph into s->face->glyph */
if (FT_Load_Char(s->face, code, s->ft_load_flags))
return AVERROR(EINVAL);
glyph = av_mallocz(sizeof(*glyph));
if (!glyph) {
ret = AVERROR(ENOMEM);
goto error;
}
glyph->code = code;
if (FT_Get_Glyph(s->face->glyph, &glyph->glyph)) {
ret = AVERROR(EINVAL);
goto error;
}
if (s->borderw) {
glyph->border_glyph = glyph->glyph;
if (FT_Glyph_StrokeBorder(&glyph->border_glyph, s->stroker, 0, 0) ||
FT_Glyph_To_Bitmap(&glyph->border_glyph, FT_RENDER_MODE_NORMAL, 0, 1)) {
ret = AVERROR_EXTERNAL;
goto error;
}
bitmapglyph = (FT_BitmapGlyph) glyph->border_glyph;
glyph->border_bitmap = bitmapglyph->bitmap;
}
if (FT_Glyph_To_Bitmap(&glyph->glyph, FT_RENDER_MODE_NORMAL, 0, 1)) {
ret = AVERROR_EXTERNAL;
goto error;
}
bitmapglyph = (FT_BitmapGlyph) glyph->glyph;
glyph->bitmap = bitmapglyph->bitmap;
glyph->bitmap_left = bitmapglyph->left;
glyph->bitmap_top = bitmapglyph->top;
glyph->advance = s->face->glyph->advance.x >> 6;
/* measure text height to calculate text_height (or the maximum text height) */
FT_Glyph_Get_CBox(glyph->glyph, ft_glyph_bbox_pixels, &glyph->bbox);
/* cache the newly created glyph */
if (!(node = av_tree_node_alloc())) {
ret = AVERROR(ENOMEM);
goto error;
}
av_tree_insert(&s->glyphs, glyph, glyph_cmp, &node);
if (glyph_ptr)
*glyph_ptr = glyph;
return 0;
error:
if (glyph)
av_freep(&glyph->glyph);
av_freep(&glyph);
av_freep(&node);
return ret;
}
SWFFONT* swf_LoadTrueTypeFont(const char*filename, char flashtype)
{
FT_Face face;
FT_Error error;
const char* name = 0;
FT_ULong charcode;
FT_UInt gindex;
SWFFONT* font;
int t;
int*glyph2glyph;
int max_unicode = 0;
int charmap = -1;
if(ftlibrary == 0) {
if(FT_Init_FreeType(&ftlibrary)) {
fprintf(stderr, "Couldn't init freetype library!\n");
exit(1);
}
}
error = FT_New_Face(ftlibrary, filename, 0, &face);
if(error || !face) {
fprintf(stderr, "Couldn't load file %s- not a TTF file?\n", filename);
return 0;
}
int scale = flashtype?20:1;
FT_Set_Pixel_Sizes (face, 16*loadfont_scale*scale, 16*loadfont_scale*scale);
if(face->num_glyphs <= 0) {
fprintf(stderr, "File %s contains %d glyphs\n", filename, (int)face->num_glyphs);
return 0;
}
font = (SWFFONT*)rfx_calloc(sizeof(SWFFONT));
font->id = -1;
font->version = flashtype?3:2;
font->layout = (SWFLAYOUT*)rfx_calloc(sizeof(SWFLAYOUT));
font->layout->bounds = (SRECT*)rfx_calloc(face->num_glyphs*sizeof(SRECT));
font->style = ((face->style_flags&FT_STYLE_FLAG_ITALIC)?FONT_STYLE_ITALIC:0)
|((face->style_flags&FT_STYLE_FLAG_BOLD)?FONT_STYLE_BOLD:0);
font->encoding = FONT_ENCODING_UNICODE;
font->glyph2ascii = (U16*)rfx_calloc(face->num_glyphs*sizeof(U16));
font->maxascii = 0;
font->glyph = (SWFGLYPH*)rfx_calloc(face->num_glyphs*sizeof(SWFGLYPH));
if(FT_HAS_GLYPH_NAMES(face)) {
font->glyphnames = (char**)rfx_calloc(face->num_glyphs*sizeof(char*));
}
font->layout->kerningcount = 0;
name = face->family_name;
if(!(name && *name))
name = FT_Get_Postscript_Name(face);
if(name && *name)
font->name = (U8*)strdup(name);
while(1)
{
/* // Map Glyphs to Unicode, version 1 (quick and dirty):
int t;
for(t=0;t<65536;t++) {
int index = FT_Get_Char_Index(face, t);
if(index>=0 && index<face->num_glyphs) {
if(font->glyph2ascii[index]<0)
font->glyph2ascii[index] = t;
}
}*/
// Map Glyphs to Unicode, version 2 (much nicer):
// (The third way would be the AGL algorithm, as proposed
// by Werner Lemberg on [email protected])
charcode = FT_Get_First_Char(face, &gindex);
while(gindex != 0)
{
if(gindex >= 0 && gindex<face->num_glyphs) {
if(!font->glyph2ascii[gindex]) {
font->glyph2ascii[gindex] = charcode;
if(charcode + 1 > font->maxascii) {
font->maxascii = charcode + 1;
}
}
}
charcode = FT_Get_Next_Char(face, charcode, &gindex);
}
/* if we didn't find a single encoding character, try
the font's charmaps instead. That usually means that
the encoding is no longer unicode.
TODO: find a way to convert the encoding to unicode
*/
if(font->maxascii == 0 && charmap < face->num_charmaps - 1) {
charmap++;
FT_Set_Charmap(face, face->charmaps[charmap]);
font->encoding = 0;//anything but unicode FIXME
} else
break;
}
if(full_unicode)
font->maxascii = 65535;
font->ascii2glyph = (int*)rfx_calloc(font->maxascii*sizeof(int));
for(t=0;t<font->maxascii;t++) {
int g = FT_Get_Char_Index(face, t);
if(!g || g>=face->num_glyphs)
g = -1;
font->ascii2glyph[t] = g;
if(g>=0) {
max_unicode = t+1;
if(!font->glyph2ascii[g]) {
font->glyph2ascii[g] = t;
}
}
}
font->maxascii = max_unicode;
font->numchars = 0;
glyph2glyph = (int*)rfx_calloc(face->num_glyphs*sizeof(int));
SRECT fontbbox = {0,0,0,0};
for(t=0; t < face->num_glyphs; t++) {
FT_Glyph glyph;
FT_BBox bbox;
char name[128];
drawer_t draw;
char hasname = 0;
name[0]=0;
if(FT_HAS_GLYPH_NAMES(face)) {
error = FT_Get_Glyph_Name(face, t, name, 127);
if(!error && name[0] && !strstr(name, "notdef")) {
font->glyphnames[font->numchars] = strdup(name);
hasname = 1;
}
}
if(!font->glyph2ascii[t] && !hasname && skip_unused) {
continue;
}
error = FT_Load_Glyph(face, t, FT_LOAD_NO_BITMAP);
if(error) {
//tends to happen with some pdfs
fprintf(stderr, "Warning: Glyph %d has return code %d\n", t, error);
glyph=0;
if(skip_unused)
continue;
} else {
error = FT_Get_Glyph(face->glyph, &glyph);
if(error) {
fprintf(stderr, "Couldn't get glyph %d, error:%d\n", t, error);
glyph=0;
if(skip_unused)
continue;
}
}
if(glyph)
FT_Glyph_Get_CBox(glyph, ft_glyph_bbox_unscaled, &bbox);
else
memset(&bbox, 0, sizeof(bbox));
bbox.yMin = -bbox.yMin;
bbox.yMax = -bbox.yMax;
if(bbox.xMax < bbox.xMin) {
// swap
bbox.xMax ^= bbox.xMin;
bbox.xMin ^= bbox.xMax;
bbox.xMax ^= bbox.xMin;
}
if(bbox.yMax < bbox.yMin) {
// swap
bbox.yMax ^= bbox.yMin;
bbox.yMin ^= bbox.yMax;
bbox.yMax ^= bbox.yMin;
}
swf_Shape01DrawerInit(&draw, 0);
//error = FT_Outline_Decompose(&face->glyph->outline, &outline_functions, &draw);
if(glyph)
error = FT_Outline_Decompose(&face->glyph->outline, &outline_functions, &draw);
else
error = 0;
draw.finish(&draw);
if(error) {
fprintf(stderr, "Couldn't decompose glyph %d\n", t);
draw.dealloc(&draw);
continue;
}
#if 0
if(bbox.xMin > 0) {
font->glyph[font->numchars].advance = (bbox.xMax*20*FT_SCALE)/FT_SUBPIXELS;
} else {
font->glyph[font->numchars].advance = ((bbox.xMax - bbox.xMin)*20*FT_SCALE)/FT_SUBPIXELS;
}
#else
if(glyph)
font->glyph[font->numchars].advance = glyph->advance.x*20/65536;
else
font->glyph[font->numchars].advance = 0;
#endif
SRECT b = swf_ShapeDrawerGetBBox(&draw);
//font->layout->bounds[font->numchars].xmin = (bbox.xMin*FT_SCALE*20)/FT_SUBPIXELS;
//font->layout->bounds[font->numchars].ymin = (bbox.yMin*FT_SCALE*20)/FT_SUBPIXELS;
//font->layout->bounds[font->numchars].xmax = (bbox.xMax*FT_SCALE*20)/FT_SUBPIXELS;
//font->layout->bounds[font->numchars].ymax = (bbox.yMax*FT_SCALE*20)/FT_SUBPIXELS;
font->layout->bounds[font->numchars] = b;
font->glyph[font->numchars].shape = swf_ShapeDrawerToShape(&draw);
swf_ExpandRect2(&fontbbox, &font->layout->bounds[font->numchars]);
draw.dealloc(&draw);
if(glyph)
FT_Done_Glyph(glyph);
font->glyph2ascii[font->numchars] = font->glyph2ascii[t];
glyph2glyph[t] = font->numchars;
font->numchars++;
}
//font->layout->ascent = abs(face->ascender)*FT_SCALE*loadfont_scale*20/FT_SUBPIXELS/2; //face->bbox.xMin;
//font->layout->descent = abs(face->descender)*FT_SCALE*loadfont_scale*20/FT_SUBPIXELS/2; //face->bbox.xMax;
//font->layout->leading = font->layout->ascent + font->layout->descent;
if(-fontbbox.ymin < 0)
font->layout->ascent = 0;
else
font->layout->ascent = -fontbbox.ymin;
if(fontbbox.ymax < 0)
font->layout->descent = 0;
else
font->layout->descent = fontbbox.ymax;
int leading = fontbbox.ymax - fontbbox.ymin;
font->layout->leading = leading>0x7fff?0x7fff:leading;
/* notice: if skip_unused is true, font->glyph2ascii, font->glyphnames and font->layout->bounds will
have more memory allocated than just font->numchars, but only the first font->numchars
are used/valid */
for(t=0;t<font->maxascii;t++) {
if(font->ascii2glyph[t]>=0) {
font->ascii2glyph[t] = glyph2glyph[font->ascii2glyph[t]];
}
}
rfx_free(glyph2glyph);
FT_Done_Face(face);
FT_Done_FreeType(ftlibrary);ftlibrary=0;
return font;
}
static int LayoutLine( filter_t *p_filter,
paragraph_t *p_paragraph,
int i_start_offset, int i_end_offset,
line_desc_t **pp_line )
{
if( p_paragraph->i_size <= 0 || p_paragraph->i_runs_count <= 0
|| i_start_offset >= i_end_offset
|| i_start_offset < 0 || i_start_offset >= p_paragraph->i_size
|| i_end_offset <= 0 || i_end_offset > p_paragraph->i_size )
{
msg_Err( p_filter,
"LayoutLine() invalid parameters. "
"Paragraph size: %d. Runs count: %d. "
"Start offset: %d. End offset: %d",
p_paragraph->i_size, p_paragraph->i_runs_count,
i_start_offset, i_end_offset );
return VLC_EGENERIC;
}
line_desc_t *p_line = NewLine( i_end_offset - i_start_offset );
if( !p_line )
return VLC_ENOMEM;
filter_sys_t *p_sys = p_filter->p_sys;
int i_last_run = -1;
run_desc_t *p_run = 0;
text_style_t *p_style = 0;
FT_Face p_face = 0;
FT_Vector pen = { .x = 0, .y = 0 };
int i_line_index = 0;
int i_font_width = 0;
int i_ul_offset = 0;
int i_ul_thickness = 0;
#ifdef HAVE_FRIBIDI
fribidi_reorder_line( 0, p_paragraph->p_types + i_start_offset,
i_end_offset - i_start_offset,
0, p_paragraph->paragraph_type,
p_paragraph->p_levels + i_start_offset,
0, p_paragraph->pi_reordered_indices + i_start_offset );
#endif
for( int i = i_start_offset; i < i_end_offset; ++i, ++i_line_index )
{
int i_paragraph_index;
#ifdef HAVE_FRIBIDI
i_paragraph_index = p_paragraph->pi_reordered_indices[ i ];
#else
i_paragraph_index = i;
#endif
line_character_t *p_ch = p_line->p_character + i_line_index;
glyph_bitmaps_t *p_bitmaps =
p_paragraph->p_glyph_bitmaps + i_paragraph_index;
if( !p_bitmaps->p_glyph )
{
--i_line_index;
continue;
}
if( i_last_run != p_paragraph->pi_run_ids[ i_paragraph_index ] )
{
i_last_run = p_paragraph->pi_run_ids[ i_paragraph_index ];
p_run = p_paragraph->p_runs + i_last_run;
p_style = p_run->p_style;
p_face = p_run->p_face;
i_font_width = p_style->i_style_flags & STYLE_HALFWIDTH ?
p_style->i_font_size / 2 : p_style->i_font_size;
}
FT_Vector pen_new = {
.x = pen.x + p_paragraph->p_glyph_bitmaps[ i_paragraph_index ].i_x_offset,
.y = pen.y + p_paragraph->p_glyph_bitmaps[ i_paragraph_index ].i_y_offset
};
FT_Vector pen_shadow = {
.x = pen_new.x + p_sys->f_shadow_vector_x * ( i_font_width << 6 ),
.y = pen_new.y + p_sys->f_shadow_vector_y * ( p_style->i_font_size << 6 )
};
if( p_bitmaps->p_shadow )
{
if( FT_Glyph_To_Bitmap( &p_bitmaps->p_shadow, FT_RENDER_MODE_NORMAL,
&pen_shadow, 0 ) )
p_bitmaps->p_shadow = 0;
else
FT_Glyph_Get_CBox( p_bitmaps->p_shadow, ft_glyph_bbox_pixels,
&p_bitmaps->shadow_bbox );
}
if( p_bitmaps->p_glyph )
{
if( FT_Glyph_To_Bitmap( &p_bitmaps->p_glyph, FT_RENDER_MODE_NORMAL,
&pen_new, 1 ) )
{
FT_Done_Glyph( p_bitmaps->p_glyph );
if( p_bitmaps->p_outline )
FT_Done_Glyph( p_bitmaps->p_outline );
if( p_bitmaps->p_shadow )
FT_Done_Glyph( p_bitmaps->p_shadow );
--i_line_index;
continue;
}
else
FT_Glyph_Get_CBox( p_bitmaps->p_glyph, ft_glyph_bbox_pixels,
&p_bitmaps->glyph_bbox );
}
if( p_bitmaps->p_outline )
{
if( FT_Glyph_To_Bitmap( &p_bitmaps->p_outline, FT_RENDER_MODE_NORMAL,
&pen_new, 1 ) )
{
FT_Done_Glyph( p_bitmaps->p_outline );
p_bitmaps->p_outline = 0;
}
else
FT_Glyph_Get_CBox( p_bitmaps->p_outline, ft_glyph_bbox_pixels,
&p_bitmaps->outline_bbox );
}
FixGlyph( p_bitmaps->p_glyph, &p_bitmaps->glyph_bbox,
p_bitmaps->i_x_advance, p_bitmaps->i_y_advance,
&pen_new );
if( p_bitmaps->p_outline )
FixGlyph( p_bitmaps->p_outline, &p_bitmaps->outline_bbox,
p_bitmaps->i_x_advance, p_bitmaps->i_y_advance,
&pen_new );
if( p_bitmaps->p_shadow )
FixGlyph( p_bitmaps->p_shadow, &p_bitmaps->shadow_bbox,
p_bitmaps->i_x_advance, p_bitmaps->i_y_advance,
&pen_shadow );
int i_line_offset = 0;
int i_line_thickness = 0;
text_style_t *p_glyph_style = p_paragraph->pp_styles[ i_paragraph_index ];
if( p_glyph_style->i_style_flags & (STYLE_UNDERLINE | STYLE_STRIKEOUT) )
{
i_line_offset =
abs( FT_FLOOR( FT_MulFix( p_face->underline_position,
p_face->size->metrics.y_scale ) ) );
i_line_thickness =
abs( FT_CEIL( FT_MulFix( p_face->underline_thickness,
p_face->size->metrics.y_scale ) ) );
if( p_glyph_style->i_style_flags & STYLE_STRIKEOUT )
{
/* Move the baseline to make it strikethrough instead of
* underline. That means that strikethrough takes precedence
*/
i_line_offset -=
abs( FT_FLOOR( FT_MulFix( p_face->descender * 2,
p_face->size->metrics.y_scale ) ) );
}
else if( i_line_thickness > 0 )
{
p_bitmaps->glyph_bbox.yMin =
__MIN( p_bitmaps->glyph_bbox.yMin,
- i_line_offset - i_line_thickness );
/* The real underline thickness and position are
* updated once the whole line has been parsed */
i_ul_offset = __MAX( i_ul_offset, i_line_offset );
i_ul_thickness = __MAX( i_ul_thickness, i_line_thickness );
i_line_thickness = -1;
}
}
p_ch->p_glyph = ( FT_BitmapGlyph ) p_bitmaps->p_glyph;
p_ch->p_outline = ( FT_BitmapGlyph ) p_bitmaps->p_outline;
p_ch->p_shadow = ( FT_BitmapGlyph ) p_bitmaps->p_shadow;
bool b_karaoke = p_paragraph->pi_karaoke_bar[ i_paragraph_index ] != 0;
p_ch->i_color = b_karaoke ?
( uint32_t ) p_glyph_style->i_karaoke_background_color
| p_glyph_style->i_karaoke_background_alpha << 24
: ( uint32_t ) p_glyph_style->i_font_color
| p_glyph_style->i_font_alpha << 24;
p_ch->i_line_thickness = i_line_thickness;
p_ch->i_line_offset = i_line_offset;
BBoxEnlarge( &p_line->bbox, &p_bitmaps->glyph_bbox );
if( p_bitmaps->p_outline )
BBoxEnlarge( &p_line->bbox, &p_bitmaps->outline_bbox );
if( p_bitmaps->p_shadow )
BBoxEnlarge( &p_line->bbox, &p_bitmaps->shadow_bbox );
pen.x += p_bitmaps->i_x_advance;
pen.y += p_bitmaps->i_y_advance;
}
p_line->i_width = __MAX( 0, p_line->bbox.xMax - p_line->bbox.xMin );
p_line->i_height = __MAX( 0, p_line->bbox.yMax - p_line->bbox.yMin );
p_line->i_character_count = i_line_index;
if( i_ul_thickness > 0 )
{
for( int i = 0; i < p_line->i_character_count; i++ )
{
line_character_t *ch = &p_line->p_character[i];
if( ch->i_line_thickness < 0 )
{
ch->i_line_offset = i_ul_offset;
ch->i_line_thickness = i_ul_thickness;
}
}
}
*pp_line = p_line;
return VLC_SUCCESS;
}
static int LayoutParagraph( filter_t *p_filter, paragraph_t *p_paragraph,
int i_max_pixel_width, line_desc_t **pp_lines )
{
if( p_paragraph->i_size <= 0 || p_paragraph->i_runs_count <= 0 )
{
msg_Err( p_filter, "LayoutParagraph() invalid parameters. "
"Paragraph size: %d. Runs count %d",
p_paragraph->i_size, p_paragraph->i_runs_count );
return VLC_EGENERIC;
}
int i_line_start = 0;
FT_Pos i_width = 0;
FT_Pos i_max_width = i_max_pixel_width << 6;
FT_Pos i_preferred_width = 0;
FT_Pos i_total_width = 0;
FT_Pos i_last_space_width = 0;
int i_last_space = -1;
line_desc_t *p_first_line = 0;
line_desc_t **pp_line = &p_first_line;
for( int i = 0; i < p_paragraph->i_size; ++i )
{
#ifdef HAVE_FRIBIDI
p_paragraph->pi_reordered_indices[ i ] = i;
#endif
i_total_width += p_paragraph->p_glyph_bitmaps[ i ].i_x_advance;
}
int i_line_count = i_total_width / i_max_width + 1;
i_preferred_width = i_total_width / i_line_count;
for( int i = 0; i <= p_paragraph->i_size; ++i )
{
if( i == p_paragraph->i_size )
{
if( i_line_start < i )
if( LayoutLine( p_filter, p_paragraph,
i_line_start, i, pp_line ) )
goto error;
break;
}
if( p_paragraph->p_code_points[ i ] == ' '
#ifdef HAVE_FRIBIDI
|| p_paragraph->p_types[ i ] == FRIBIDI_TYPE_WS
#endif
)
{
if( i_line_start == i )
{
/*
* Free orphaned white space glyphs not belonging to any lines.
* At this point p_shadow points to either p_glyph or p_outline,
* so we should not free it explicitly.
*/
if( p_paragraph->p_glyph_bitmaps[ i ].p_glyph )
FT_Done_Glyph( p_paragraph->p_glyph_bitmaps[ i ].p_glyph );
if( p_paragraph->p_glyph_bitmaps[ i ].p_outline )
FT_Done_Glyph( p_paragraph->p_glyph_bitmaps[ i ].p_outline );
i_line_start = i + 1;
continue;
}
if( i_last_space == i - 1 )
{
p_paragraph->p_glyph_bitmaps[ i - 1 ].i_x_advance = 0;
i_last_space = i;
continue;
}
i_last_space = i;
i_last_space_width = i_width;
}
i_width += p_paragraph->p_glyph_bitmaps[ i ].i_x_advance;
if( i_last_space_width >= i_preferred_width
|| i_width >= i_max_width )
{
if( i_line_start == i )
{
msg_Err( p_filter,
"LayoutParagraph(): Width of single glyph exceeds maximum" );
goto error;
}
int i_end_offset;
if( i_last_space > i_line_start )
i_end_offset = i_last_space;
else
i_end_offset = i;
if( LayoutLine( p_filter, p_paragraph, i_line_start,
i_end_offset, pp_line ) )
goto error;
pp_line = &( *pp_line )->p_next;
i_line_start = i_end_offset;
i = i_line_start - 1;
i_width = 0;
i_last_space_width = 0;
}
}
*pp_lines = p_first_line;
return VLC_SUCCESS;
error:
for( int i = i_line_start; i < p_paragraph->i_size; ++i )
{
if( p_paragraph->p_glyph_bitmaps[ i ].p_glyph )
FT_Done_Glyph( p_paragraph->p_glyph_bitmaps[ i ].p_glyph );
if( p_paragraph->p_glyph_bitmaps[ i ].p_outline )
FT_Done_Glyph( p_paragraph->p_glyph_bitmaps[ i ].p_outline );
}
if( p_first_line )
FreeLines( p_first_line );
return VLC_EGENERIC;
}
int LayoutText( filter_t *p_filter, line_desc_t **pp_lines,
FT_BBox *p_bbox, int *pi_max_face_height,
uni_char_t *psz_text, text_style_t **pp_styles,
uint32_t *pi_k_dates, int i_len )
{
line_desc_t *p_first_line = 0;
line_desc_t **pp_line = &p_first_line;
paragraph_t *p_paragraph = 0;
int i_paragraph_start = 0;
int i_max_height = 0;
for( int i = 0; i <= i_len; ++i )
{
if( i == i_len || psz_text[ i ] == '\n' )
{
if( i_paragraph_start == i )
{
i_paragraph_start = i + 1;
continue;
}
p_paragraph = NewParagraph( p_filter, i - i_paragraph_start,
psz_text + i_paragraph_start,
pp_styles + i_paragraph_start,
pi_k_dates ?
pi_k_dates + i_paragraph_start : 0,
20 );
if( !p_paragraph )
{
if( p_first_line ) FreeLines( p_first_line );
return VLC_ENOMEM;
}
#ifdef HAVE_FRIBIDI
if( AnalyzeParagraph( p_paragraph ) )
goto error;
#endif
if( ItemizeParagraph( p_filter, p_paragraph ) )
goto error;
#if defined HAVE_HARFBUZZ
if( ShapeParagraphHarfBuzz( p_filter, &p_paragraph ) )
goto error;
if( LoadGlyphs( p_filter, p_paragraph, true, false ) )
goto error;
#elif defined HAVE_FRIBIDI
if( ShapeParagraphFriBidi( p_filter, p_paragraph ) )
goto error;
if( LoadGlyphs( p_filter, p_paragraph, false, true ) )
goto error;
if( RemoveZeroWidthCharacters( p_paragraph ) )
goto error;
if( ZeroNsmAdvance( p_paragraph ) )
goto error;
#else
if( LoadGlyphs( p_filter, p_paragraph, false, true ) )
goto error;
#endif
/*
* Set max line width to allow for outline and shadow glyphs,
* and any extra width caused by visual reordering
*/
int i_max_width = ( int ) p_filter->fmt_out.video.i_visible_width
- 2 * p_filter->p_sys->style.i_font_size;
if( LayoutParagraph( p_filter, p_paragraph,
i_max_width, pp_line ) )
goto error;
FreeParagraph( p_paragraph );
p_paragraph = 0;
for( ; *pp_line; pp_line = &( *pp_line )->p_next )
i_max_height = __MAX( i_max_height, ( *pp_line )->i_height );
i_paragraph_start = i + 1;
}
}
int i_base_line = 0;
FT_BBox bbox = {
.xMin = INT_MAX,
.yMin = INT_MAX,
.xMax = INT_MIN,
.yMax = INT_MIN
};
for( line_desc_t *p_line = p_first_line; p_line; p_line = p_line->p_next )
{
p_line->i_base_line = i_base_line;
p_line->bbox.yMin -= i_base_line;
p_line->bbox.yMax -= i_base_line;
BBoxEnlarge( &bbox, &p_line->bbox );
i_base_line += i_max_height;
}
*pp_lines = p_first_line;
*p_bbox = bbox;
*pi_max_face_height = i_max_height;
return VLC_SUCCESS;
error:
if( p_first_line ) FreeLines( p_first_line );
if( p_paragraph ) FreeParagraph( p_paragraph );
return VLC_EGENERIC;
}
box2d<double> text_renderer<T>::prepare_glyphs(text_path *path)
{
//clear glyphs
glyphs_.clear();
FT_Matrix matrix;
FT_Vector pen;
FT_Error error;
FT_BBox bbox;
bbox.xMin = bbox.yMin = 32000; // Initialize these so we can tell if we
bbox.xMax = bbox.yMax = -32000; // properly grew the bbox later
for (int i = 0; i < path->num_nodes(); i++)
{
char_info_ptr c;
double x, y, angle;
path->vertex(&c, &x, &y, &angle);
// TODO Enable when we have support for setting verbosity
// MAPNIK_LOG_DEBUG(font_engine_freetype) << "text_renderer: prepare_glyphs="
// << c << "," << x << "," << y << "," << angle;
FT_BBox glyph_bbox;
FT_Glyph image;
pen.x = int(x * 64);
pen.y = int(y * 64);
face_set_ptr faces = font_manager_.get_face_set(c->format->face_name, c->format->fontset);
faces->set_character_sizes(c->format->text_size);
glyph_ptr glyph = faces->get_glyph(unsigned(c->c));
FT_Face face = glyph->get_face()->get_face();
matrix.xx = (FT_Fixed)( cos( angle ) * 0x10000L );
matrix.xy = (FT_Fixed)(-sin( angle ) * 0x10000L );
matrix.yx = (FT_Fixed)( sin( angle ) * 0x10000L );
matrix.yy = (FT_Fixed)( cos( angle ) * 0x10000L );
FT_Set_Transform(face, &matrix, &pen);
error = FT_Load_Glyph(face, glyph->get_index(), FT_LOAD_NO_HINTING);
if ( error )
continue;
error = FT_Get_Glyph(face->glyph, &image);
if ( error )
continue;
FT_Glyph_Get_CBox(image,ft_glyph_bbox_pixels, &glyph_bbox);
if (glyph_bbox.xMin < bbox.xMin)
bbox.xMin = glyph_bbox.xMin;
if (glyph_bbox.yMin < bbox.yMin)
bbox.yMin = glyph_bbox.yMin;
if (glyph_bbox.xMax > bbox.xMax)
bbox.xMax = glyph_bbox.xMax;
if (glyph_bbox.yMax > bbox.yMax)
bbox.yMax = glyph_bbox.yMax;
// Check if we properly grew the bbox
if ( bbox.xMin > bbox.xMax )
{
bbox.xMin = 0;
bbox.yMin = 0;
bbox.xMax = 0;
bbox.yMax = 0;
}
// take ownership of the glyph
glyphs_.push_back(new glyph_t(image, c->format));
}
return box2d<double>(bbox.xMin, bbox.yMin, bbox.xMax, bbox.yMax);
}
static int
glnames(
GLYPH *glyph_list
)
{
#define MAX_NAMELEN 1024
#ifdef XP_PSTEXT
char buf[1024];
long i;
FT_Error error;
#ifdef XP_ONLY_BLOCKS
extern unsigned long xp_font_block_offset;
extern FTFontPtr xp_xtf;
int bc; /* block counter */
/* FixMe: This code should use PsOut_Get_FreeType_Glyph_Name() instead of
* duplicating the code
*/
for( bc = xp_font_block_offset ; bc < (xp_font_block_offset+256) ; bc++ ) {
/* Remap X11 font index to FreeType font index */
i = FTRemap(face, &xp_xtf->mapping, bc);
if( i >= face->num_glyphs )
continue;
#else
for(i=0; i < face->num_glyphs; i++) {
#endif /* XP_ONLY_BLOCKS */
if( FT_Has_PS_Glyph_Names(face) ) {
error = FT_Get_Glyph_Name(face, i, buf, MAX_NAMELEN);
}
else
{
error = -1;
}
if( error ) {
/* Check for unicode mapping
* See Adobe document "Unicode and Glyph Names"
* (http://partners.adobe.com/asn/tech/type/unicodegn.jsp)
*/
if( (xp_xtf->mapping.mapping->type == FONT_ENCODING_UNICODE) &&
(i < 0xFFFE) )
{
sprintf(buf, "uni%04lx", i);
}
else
{
sprintf(buf, "ch%02lx", i);
}
}
glyph_list[i].name = strdup(buf);
if(ISDBG(FT)) fprintf(stderr, "%d has name %s\n", i, buf);
if (glyph_list[i].name == NULL) {
fprintf (stderr, "****malloc failed %s line %d\n", __FILE__, __LINE__);
exit(255);
}
}
return 0;
#else
char bf[1024];
long i;
if( ! FT_HAS_GLYPH_NAMES(face) ) {
WARNING_1 fprintf(stderr, "Font has no glyph names\n");
return 1;
}
for(i=0; i < face->num_glyphs; i++) {
if( FT_Get_Glyph_Name(face, i, bf, MAX_NAMELEN) || bf[0]==0 ) {
sprintf(bf, "_g_%d", i);
WARNING_2 fprintf(stderr,
"Glyph No. %d has no postscript name, becomes %s\n", i, bf);
}
glyph_list[i].name = strdup(bf);
if(ISDBG(FT)) fprintf(stderr, "%d has name %s\n", i, bf);
if (glyph_list[i].name == NULL) {
fprintf (stderr, "****malloc failed %s line %d\n", __FILE__, __LINE__);
exit(255);
}
}
return 0;
#endif /* XP_PSTEXT */
}
/*
* Get the metrics of the glyphs.
*/
static void
glmetrics(
GLYPH *glyph_list
)
{
GLYPH *g;
int i;
FT_Glyph_Metrics *met;
FT_BBox bbox;
FT_Glyph gly;
#ifdef XP_ONLY_BLOCKS
extern unsigned long xp_font_block_offset;
extern FTFontPtr xp_xtf;
int bc; /* block counter */
for( bc = xp_font_block_offset ; bc < (xp_font_block_offset+256) ; bc++ ) {
/* Remap X11 font index to FreeType font index */
i = FTRemap(face, &xp_xtf->mapping, bc);
if( i >= face->num_glyphs )
continue;
#else
for(i=0; i < face->num_glyphs; i++) {
#endif /* XP_ONLY_BLOCKS */
g = &(glyph_list[i]);
if( FT_Load_Glyph(face, i, FT_LOAD_NO_BITMAP|FT_LOAD_NO_SCALE) ) {
fprintf(stderr, "Can't load glyph %s, skipped\n", g->name);
continue;
}
met = &face->glyph->metrics;
if(FT_HAS_HORIZONTAL(face)) {
g->width = met->horiAdvance;
g->lsb = met->horiBearingX;
} else {
WARNING_2 fprintf(stderr, "Glyph %s has no horizontal metrics, guessed them\n", g->name);
g->width = met->width;
g->lsb = 0;
}
if( FT_Get_Glyph(face->glyph, &gly) ) {
fprintf(stderr, "Can't access glyph %s bbox, skipped\n", g->name);
continue;
}
FT_Glyph_Get_CBox(gly, ft_glyph_bbox_unscaled, &bbox);
g->xMin = bbox.xMin;
g->yMin = bbox.yMin;
g->xMax = bbox.xMax;
g->yMax = bbox.yMax;
g->ttf_pathlen = face->glyph->outline.n_points;
}
}
/*
* Get the original encoding of the font.
* Returns 1 for if the original encoding is Unicode, 2 if the
* original encoding is other 16-bit, 0 if 8-bit.
*/
static int
glenc(
GLYPH *glyph_list,
int *encoding,
int *unimap
)
{
#ifdef XP_PSTEXT
int i,
e;
unsigned code;
extern FTFontPtr xp_xtf;
extern unsigned long xp_font_block_offset;
enc_found = 1;
enc_type = 0;
for(i=0; i<ENCTABSZ; i++) {
if(encoding[i] != -1)
continue;
/* Remap X11 font index to FreeType font index */
code = FTRemap(face, &xp_xtf->mapping, xp_font_block_offset+i);
if(code == 0)
continue; /* .notdef */
encoding[i] = code;
}
return enc_type;
#else
int i, e;
unsigned code;
if(ISDBG(FT))
for(e=0; e < face->num_charmaps; e++) {
fprintf(stderr, "found encoding pid=%d eid=%d\n",
face->charmaps[e]->platform_id,
face->charmaps[e]->encoding_id);
}
if(enc_found)
goto populate_map;
enc_type = 0;
/* first check for an explicit PID/EID */
if(force_pid != -1) {
for(e=0; e < face->num_charmaps; e++) {
if(face->charmaps[e]->platform_id == force_pid
&& face->charmaps[e]->encoding_id == force_eid) {
WARNING_1 fprintf(stderr, "Found Encoding PID=%d/EID=%d\n",
force_pid, force_eid);
if( FT_Set_Charmap(face, face->charmaps[e]) ) {
fprintf(stderr, "**** Cannot set charmap in FreeType ****\n");
exit(1);
}
enc_type = 1;
goto populate_map;
}
}
fprintf(stderr, "*** TTF encoding table PID=%d/EID=%d not found\n",
force_pid, force_eid);
exit(1);
}
/* next check for a direct Adobe mapping */
if(!forcemap) {
for(e=0; e < face->num_charmaps; e++) {
if(face->charmaps[e]->encoding == ft_encoding_adobe_custom) {
WARNING_1 fputs("Found Adobe Custom Encoding\n", stderr);
if( FT_Set_Charmap(face, face->charmaps[e]) ) {
fprintf(stderr, "**** Cannot set charmap in FreeType ****\n");
exit(1);
}
goto populate_map;
}
}
}
for(e=0; e < face->num_charmaps; e++) {
if(face->charmaps[e]->platform_id == 3) {
switch(face->charmaps[e]->encoding_id) {
case 0:
WARNING_1 fputs("Found Symbol Encoding\n", stderr);
break;
case 1:
WARNING_1 fputs("Found Unicode Encoding\n", stderr);
enc_type = 1;
break;
default:
WARNING_1 {
fprintf(stderr,
"****MS Encoding ID %d not supported****\n",
face->charmaps[e]->encoding_id);
fputs("Treating it like Symbol encoding\n", stderr);
}
break;
}
break;
}
}
if(e >= face->num_charmaps) {
WARNING_1 fputs("No Microsoft encoding, using first encoding available\n", stderr);
e = 0;
}
if( FT_Set_Charmap(face, face->charmaps[e]) ) {
fprintf(stderr, "**** Cannot set charmap in FreeType ****\n");
exit(1);
}
populate_map:
enc_found = 1;
for(i=0; i<ENCTABSZ; i++) {
if(encoding[i] != -1)
continue;
if(enc_type == 1 || forcemap) {
code = unimap[i];
if(code == (unsigned) -1)
continue;
} else
code = i;
code = FT_Get_Char_Index(face, code);
if(0 && ISDBG(FT)) fprintf(stderr, "code of %3d is %3d\n", i, code);
if(code == 0)
continue; /* .notdef */
encoding[i] = code;
}
return enc_type;
#endif /* XP_PSTEXT */
}
