/* === S Y N F I G ========================================================= */
/*! \file lyr_freetype.cpp
** \brief Implementation of the "Text" layer
**
** $Id$
**
** \legal
** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
** Copyright (c) 2006 Paul Wise
** Copyright (c) 2007, 2008 Chris Moore
** Copyright (c) 2012-2013 Carlos López
**
** This package is free software; you can redistribute it and/or
** modify it under the terms of the GNU General Public License as
** published by the Free Software Foundation; either version 2 of
** the License, or (at your option) any later version.
**
** This package is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
** General Public License for more details.
** \endlegal
**
** === N O T E S ===========================================================
**
** ========================================================================= */
/* === H E A D E R S ======================================================= */
#define SYNFIG_LAYER
#ifdef USING_PCH
# include "pch.h"
#else
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#ifdef WITH_FONTCONFIG
#include <fontconfig/fontconfig.h>
#endif
#include <pango/pangocairo.h>
#include "lyr_freetype.h"
#include <synfig/localization.h>
#include <synfig/general.h>
#include <synfig/canvasfilenaming.h>
#include <synfig/cairo_renddesc.h>
#endif
using namespace std;
using namespace etl;
using namespace synfig;
/* === M A C R O S ========================================================= */
#define MAX_GLYPHS 2000
#define PANGO_STYLE_NORMAL (0)
#define PANGO_STYLE_OBLIQUE (1)
#define PANGO_STYLE_ITALIC (2)
#define WEIGHT_NORMAL (400)
#define WEIGHT_BOLD (700)
/* === G L O B A L S ======================================================= */
SYNFIG_LAYER_INIT(Layer_Freetype);
SYNFIG_LAYER_SET_NAME(Layer_Freetype,"text");
SYNFIG_LAYER_SET_LOCAL_NAME(Layer_Freetype,N_("Text"));
SYNFIG_LAYER_SET_CATEGORY(Layer_Freetype,N_("Other"));
SYNFIG_LAYER_SET_VERSION(Layer_Freetype,"0.2");
SYNFIG_LAYER_SET_CVS_ID(Layer_Freetype,"$Id$");
/* === P R O C E D U R E S ================================================= */
/*Glyph::~Glyph()
{
if(glyph)FT_Done_Glyph(glyph);
}
*/
void
TextLine::clear_and_free()
{
std::vector<Glyph>::iterator iter;
for(iter=glyph_table.begin();iter!=glyph_table.end();++iter)
{
if(iter->glyph)FT_Done_Glyph(iter->glyph);
iter->glyph=0;
}
glyph_table.clear();
}
/* === M E T H O D S ======================================================= */
Layer_Freetype::Layer_Freetype()
{
face=0;
param_size=ValueBase(Vector(0.25,0.25));
param_text=ValueBase(_("Text Layer"));
param_color=ValueBase(Color::black());
param_origin=ValueBase(Vector(0,0));
param_orient=ValueBase(Vector(0.5,0.5));
param_compress=ValueBase(Real(1.0));
param_vcompress=ValueBase(Real(1.0));
param_weight=ValueBase(WEIGHT_NORMAL);
param_style=ValueBase(PANGO_STYLE_NORMAL);
param_family=ValueBase((const char*)"Sans Serif");
param_use_kerning=ValueBase(true);
param_grid_fit=ValueBase(false);
param_invert=ValueBase(false);
param_font=ValueBase(synfig::String());
old_version=false;
set_blend_method(Color::BLEND_COMPOSITE);
needs_sync_=true;
synfig::String family=param_family.get(synfig::String());
int style=param_style.get(int());
int weight=param_weight.get(int());
new_font(family,style,weight);
SET_INTERPOLATION_DEFAULTS();
SET_STATIC_DEFAULTS();
set_description(param_text.get(String()));
}
Layer_Freetype::~Layer_Freetype()
{
if(face)
FT_Done_Face(face);
}
void
Layer_Freetype::on_canvas_set()
{
Layer_Composite::on_canvas_set();
synfig::String family=param_family.get(synfig::String());
int style=param_style.get(int());
int weight=param_weight.get(int());
new_font(family,style,weight);
}
void
Layer_Freetype::new_font(const synfig::String &family, int style, int weight)
{
if(
!new_font_(family,style,weight) &&
!new_font_(family,style,WEIGHT_NORMAL) &&
!new_font_(family,PANGO_STYLE_NORMAL,weight) &&
!new_font_(family,PANGO_STYLE_NORMAL,WEIGHT_NORMAL) &&
!new_font_("sans serif",style,weight) &&
!new_font_("sans serif",style,WEIGHT_NORMAL) &&
!new_font_("sans serif",PANGO_STYLE_NORMAL,weight)
)
new_font_("sans serif",PANGO_STYLE_NORMAL,WEIGHT_NORMAL);
}
/*! The new_font() function try to render
** text until it work by simplyfing font style(s).
** In last chance, render text as "sans serif" Normal
** font style.
*/
bool
Layer_Freetype::new_font_(const synfig::String &font_fam_, int style, int weight)
{
synfig::String font_fam(font_fam_);
if(new_face(font_fam_))
return true;
//start evil hack
for(unsigned int i=0;i<font_fam.size();i++)font_fam[i]=tolower(font_fam[i]);
//end evil hack
if(font_fam=="arial black")
{
#ifndef __APPLE__
if(new_face("ariblk"))
return true;
else
#endif
font_fam="sans serif";
}
if(font_fam=="sans serif" || font_fam=="arial")
{
String arial("arial");
if(weight>WEIGHT_NORMAL)
arial+='b';
if(style==PANGO_STYLE_ITALIC||style==PANGO_STYLE_OBLIQUE)
arial+='i';
else
if(weight>WEIGHT_NORMAL) arial+='d';
if(new_face(arial))
return true;
#ifdef __APPLE__
if(new_face("Helvetica RO"))
return true;
#endif
}
if(font_fam=="comic" || font_fam=="comic sans")
{
String filename("comic");
if(weight>WEIGHT_NORMAL)
filename+='b';
if(style==PANGO_STYLE_ITALIC||style==PANGO_STYLE_OBLIQUE)
filename+='i';
else if(weight>WEIGHT_NORMAL) filename+='d';
if(new_face(filename))
return true;
}
if(font_fam=="courier" || font_fam=="courier new")
{
String filename("cour");
if(weight>WEIGHT_NORMAL)
filename+='b';
if(style==PANGO_STYLE_ITALIC||style==PANGO_STYLE_OBLIQUE)
filename+='i';
else if(weight>WEIGHT_NORMAL) filename+='d';
if(new_face(filename))
return true;
}
if(font_fam=="serif" || font_fam=="times" || font_fam=="times new roman")
{
String filename("times");
if(weight>WEIGHT_NORMAL)
filename+='b';
if(style==PANGO_STYLE_ITALIC||style==PANGO_STYLE_OBLIQUE)
filename+='i';
else if(weight>WEIGHT_NORMAL) filename+='d';
if(new_face(filename))
return true;
}
if(font_fam=="trebuchet")
{
String filename("trebuc");
if(weight>WEIGHT_NORMAL)
filename+='b';
if(style==PANGO_STYLE_ITALIC||style==PANGO_STYLE_OBLIQUE)
{
filename+='i';
if(weight<=WEIGHT_NORMAL) filename+='t';
}
else if(weight>WEIGHT_NORMAL) filename+='d';
if(new_face(filename))
return true;
}
if(font_fam=="sans serif" || font_fam=="luxi sans")
{
{
String luxi("luxis");
if(weight>WEIGHT_NORMAL)
luxi+='b';
else
luxi+='r';
if(style==PANGO_STYLE_ITALIC||style==PANGO_STYLE_OBLIQUE)
luxi+='i';
if(new_face(luxi))
return true;
}
if(new_face("arial"))
return true;
if(new_face("Arial"))
return true;
}
if(font_fam=="serif" || font_fam=="times" || font_fam=="times new roman" || font_fam=="luxi serif")
{
{
String luxi("luxir");
if(weight>WEIGHT_NORMAL)
luxi+='b';
else
luxi+='r';
if(style==PANGO_STYLE_ITALIC||style==PANGO_STYLE_OBLIQUE)
luxi+='i';
if(new_face(luxi))
return true;
}
if(new_face("Times New Roman"))
return true;
if(new_face("Times"))
return true;
}
if(font_fam=="luxi")
{
{
String luxi("luxim");
if(weight>WEIGHT_NORMAL)
luxi+='b';
else
luxi+='r';
if(style==PANGO_STYLE_ITALIC||style==PANGO_STYLE_OBLIQUE)
luxi+='i';
if(new_face(luxi))
return true;
}
if(new_face("Times New Roman"))
return true;
if(new_face("Times"))
return true;
}
return new_face(font_fam_) || new_face(font_fam);
return false;
}
#ifdef USE_MAC_FT_FUNCS
void fss2path(char *path, FSSpec *fss)
{
int l; //fss->name contains name of last item in path
for(l=0; l<(fss->name[0]); l++) path[l] = fss->name[l + 1];
path[l] = 0;
if(fss->parID != fsRtParID) //path is more than just a volume name
{
int i, len;
CInfoPBRec pb;
pb.dirInfo.ioNamePtr = fss->name;
pb.dirInfo.ioVRefNum = fss->vRefNum;
pb.dirInfo.ioDrParID = fss->parID;
do
{
pb.dirInfo.ioFDirIndex = -1; //get parent directory name
pb.dirInfo.ioDrDirID = pb.dirInfo.ioDrParID;
if(PBGetCatInfoSync(&pb) != noErr) break;
len = fss->name[0] + 1;
for(i=l; i>=0; i--) path[i + len] = path[i];
for(i=1; i<len; i++) path[i - 1] = fss->name[i]; //add to start of path
path[i - 1] = ':';
l += len;
} while(pb.dirInfo.ioDrDirID != fsRtDirID); //while more directory levels
}
}
#endif
bool
Layer_Freetype::new_face(const String &newfont)
{
synfig::String font=param_font.get(synfig::String());
int error;
FT_Long face_index=0;
// If we are already loaded, don't bother reloading.
if(face && font==newfont)
return true;
if(face)
{
FT_Done_Face(face);
face=0;
}
error=FT_New_Face(ft_library,newfont.c_str(),face_index,&face);
if(error)error=FT_New_Face(ft_library,(newfont+".ttf").c_str(),face_index,&face);
if(get_canvas())
{
if(error)error=FT_New_Face(ft_library,(get_canvas()->get_file_path()+ETL_DIRECTORY_SEPARATOR+newfont).c_str(),face_index,&face);
if(error)error=FT_New_Face(ft_library,(get_canvas()->get_file_path()+ETL_DIRECTORY_SEPARATOR+newfont+".ttf").c_str(),face_index,&face);
}
#ifdef USE_MAC_FT_FUNCS
if(error)
{
FSSpec fs_spec;
error=FT_GetFile_From_Mac_Name(newfont.c_str(),&fs_spec,&face_index);
if(!error)
{
char filename[512];
fss2path(filename,&fs_spec);
//FSSpecToNativePathName(fs_spec,filename,sizeof(filename)-1, 0);
error=FT_New_Face(ft_library, filename, face_index,&face);
//error=FT_New_Face_From_FSSpec(ft_library, &fs_spec, face_index,&face);
synfig::info(__FILE__":%d: \"%s\" (%s) -- ft_error=%d",__LINE__,newfont.c_str(),filename,error);
}
else
{
synfig::info(__FILE__":%d: \"%s\" -- ft_error=%d",__LINE__,newfont.c_str(),error);
// Unable to generate fs_spec
}
}
#endif
#ifdef WITH_FONTCONFIG
if(error)
{
FcFontSet *fs;
FcResult result;
if( !FcInit() )
{
synfig::warning("Layer_Freetype: fontconfig: %s",_("unable to initialize"));
error = 1;
} else {
FcPattern* pat = FcNameParse((FcChar8 *) newfont.c_str());
FcConfigSubstitute(0, pat, FcMatchPattern);
FcDefaultSubstitute(pat);
FcPattern *match;
fs = FcFontSetCreate();
match = FcFontMatch(0, pat, &result);
if (match)
FcFontSetAdd(fs, match);
if (pat)
FcPatternDestroy(pat);
if(fs && fs->nfont){
FcChar8* file;
if( FcPatternGetString (fs->fonts[0], FC_FILE, 0, &file) == FcResultMatch )
error=FT_New_Face(ft_library,(const char*)file,face_index,&face);
FcFontSetDestroy(fs);
} else
synfig::warning("Layer_Freetype: fontconfig: %s",_("empty font set"));
}
}
#endif
#ifdef _WIN32
if(error)error=FT_New_Face(ft_library,("C:\\WINDOWS\\FONTS\\"+newfont).c_str(),face_index,&face);
if(error)error=FT_New_Face(ft_library,("C:\\WINDOWS\\FONTS\\"+newfont+".ttf").c_str(),face_index,&face);
#else
#ifdef __APPLE__
if(error)error=FT_New_Face(ft_library,("~/Library/Fonts/"+newfont).c_str(),face_index,&face);
if(error)error=FT_New_Face(ft_library,("~/Library/Fonts/"+newfont+".ttf").c_str(),face_index,&face);
if(error)error=FT_New_Face(ft_library,("~/Library/Fonts/"+newfont+".dfont").c_str(),face_index,&face);
if(error)error=FT_New_Face(ft_library,("/Library/Fonts/"+newfont).c_str(),face_index,&face);
if(error)error=FT_New_Face(ft_library,("/Library/Fonts/"+newfont+".ttf").c_str(),face_index,&face);
if(error)error=FT_New_Face(ft_library,("/Library/Fonts/"+newfont+".dfont").c_str(),face_index,&face);
#endif
if(error)error=FT_New_Face(ft_library,("/usr/X11R6/lib/X11/fonts/type1/"+newfont).c_str(),face_index,&face);
if(error)error=FT_New_Face(ft_library,("/usr/X11R6/lib/X11/fonts/type1/"+newfont+".ttf").c_str(),face_index,&face);
if(error)error=FT_New_Face(ft_library,("/usr/share/fonts/truetype/"+newfont).c_str(),face_index,&face);
if(error)error=FT_New_Face(ft_library,("/usr/share/fonts/truetype/"+newfont+".ttf").c_str(),face_index,&face);
if(error)error=FT_New_Face(ft_library,("/usr/X11R6/lib/X11/fonts/TTF/"+newfont).c_str(),face_index,&face);
if(error)error=FT_New_Face(ft_library,("/usr/X11R6/lib/X11/fonts/TTF/"+newfont+".ttf").c_str(),face_index,&face);
if(error)error=FT_New_Face(ft_library,("/usr/X11R6/lib/X11/fonts/truetype/"+newfont).c_str(),face_index,&face);
if(error)error=FT_New_Face(ft_library,("/usr/X11R6/lib/X11/fonts/truetype/"+newfont+".ttf").c_str(),face_index,&face);
#endif
if(error)
{
//synfig::error(strprintf("Layer_Freetype:%s (err=%d)",_("Unable to open face."),error));
return false;
}
font=newfont;
needs_sync_=true;
return true;
}
bool
Layer_Freetype::set_param(const String & param, const ValueBase &value)
{
Mutex::Lock lock(mutex);
/*
if(param=="font" && value.same_type_as(font))
{
new_font(etl::basename(value.get(font)),style,weight);
family=etl::basename(value.get(font));
return true;
}
*/
IMPORT_VALUE_PLUS(param_family,
{
synfig::String family=param_family.get(synfig::String());
int style=param_style.get(int());
int weight=param_weight.get(int());
new_font(family,style,weight);
}
);
IMPORT_VALUE_PLUS(param_weight,
{
synfig::String family=param_family.get(synfig::String());
int style=param_style.get(int());
int weight=param_weight.get(int());
new_font(family,style,weight);
}
);
IMPORT_VALUE_PLUS(param_style,
{
synfig::String family=param_family.get(synfig::String());
int style=param_style.get(int());
int weight=param_weight.get(int());
new_font(family,style,weight);
}
);
IMPORT_VALUE_PLUS(param_size,
{
if(old_version)
{
synfig::Vector size=param_size.get(synfig::Vector());
size/=2.0;
param_size.set(size);
}
needs_sync_=true;
}
);
IMPORT_VALUE_PLUS(param_text,needs_sync_=true);
IMPORT_VALUE_PLUS(param_origin,needs_sync_=true);
IMPORT_VALUE_PLUS(param_color,
{
Color color=param_color.get(Color());
if (color.get_a() == 0)
{
if (converted_blend_)
{
set_blend_method(Color::BLEND_ALPHA_OVER);
color.set_a(1);
param_color.set(color);
} else transparent_color_ = true;
}
}
);
IMPORT_VALUE(param_invert);
IMPORT_VALUE_PLUS(param_orient,needs_sync_=true);
IMPORT_VALUE_PLUS(param_compress,needs_sync_=true);
IMPORT_VALUE_PLUS(param_vcompress,needs_sync_=true);
IMPORT_VALUE_PLUS(param_use_kerning,needs_sync_=true);
IMPORT_VALUE_PLUS(param_grid_fit,needs_sync_=true);
if(param=="pos")
return set_param("origin", value);
return Layer_Composite::set_param(param,value);
}
ValueBase
Layer_Freetype::get_param(const String& param)const
{
EXPORT_VALUE(param_font);
EXPORT_VALUE(param_family);
EXPORT_VALUE(param_style);
EXPORT_VALUE(param_weight);
EXPORT_VALUE(param_size);
EXPORT_VALUE(param_text);
EXPORT_VALUE(param_color);
EXPORT_VALUE(param_origin);
EXPORT_VALUE(param_orient);
EXPORT_VALUE(param_compress);
EXPORT_VALUE(param_vcompress);
EXPORT_VALUE(param_use_kerning);
EXPORT_VALUE(param_grid_fit);
EXPORT_VALUE(param_invert);
EXPORT_NAME();
EXPORT_VERSION();
return Layer_Composite::get_param(param);
}
Layer::Vocab
Layer_Freetype::get_param_vocab(void)const
{
Layer::Vocab ret(Layer_Composite::get_param_vocab());
ret.push_back(ParamDesc("text")
.set_local_name(_("Text"))
.set_description(_("Text to Render"))
.set_hint("paragraph")
);
ret.push_back(ParamDesc("color")
.set_local_name(_("Color"))
.set_description(_("Color of the text"))
);
ret.push_back(ParamDesc("family")
.set_local_name(_("Font Family"))
.set_hint("font_family")
);
ret.push_back(ParamDesc("style")
.set_local_name(_("Style"))
.set_hint("enum")
.add_enum_value(PANGO_STYLE_NORMAL, "normal" ,_("Normal"))
.add_enum_value(PANGO_STYLE_OBLIQUE, "oblique" ,_("Oblique"))
.add_enum_value(PANGO_STYLE_ITALIC, "italic" ,_("Italic"))
);
ret.push_back(ParamDesc("weight")
.set_local_name(_("Weight"))
.set_hint("enum")
.add_enum_value(200, "ultralight" ,_("Ultralight"))
.add_enum_value(300, "light" ,_("light"))
.add_enum_value(400, "normal" ,_("Normal"))
.add_enum_value(700, "bold" ,_("Bold"))
.add_enum_value(800, "ultrabold" ,_("Ultrabold"))
.add_enum_value(900, "heavy" ,_("Heavy"))
);
ret.push_back(ParamDesc("compress")
.set_local_name(_("Horizontal Spacing"))
.set_description(_("Describes how close glyphs are horizontally"))
);
ret.push_back(ParamDesc("vcompress")
.set_local_name(_("Vertical Spacing"))
.set_description(_("Describes how close lines of text are vertically"))
);
ret.push_back(ParamDesc("size")
.set_local_name(_("Size"))
.set_description(_("Size of the text"))
.set_hint("size")
.set_origin("origin")
.set_scalar(1)
);
ret.push_back(ParamDesc("orient")
.set_local_name(_("Orientation"))
.set_description(_("Text Orientation"))
.set_invisible_duck()
);
ret.push_back(ParamDesc("origin")
.set_local_name(_("Origin"))
.set_description(_("Text Position"))
);
ret.push_back(ParamDesc("font")
.set_local_name(_("Font"))
.set_description(_("Filename of the font to use"))
.set_hint("filename")
.not_critical()
.hidden()
);
ret.push_back(ParamDesc("use_kerning")
.set_local_name(_("Kerning"))
.set_description(_("Enables/Disables font kerning (If the font supports it)"))
);
ret.push_back(ParamDesc("grid_fit")
.set_local_name(_("Sharpen Edges"))
.set_description(_("Turn this off if you are going to be animating the text"))
);
ret.push_back(ParamDesc("invert")
.set_local_name(_("Invert"))
);
return ret;
}
void
Layer_Freetype::sync()
{
needs_sync_=false;
}
inline Color
Layer_Freetype::color_func(const Point &point_ __attribute__ ((unused)), int quality __attribute__ ((unused)), ColorReal supersample __attribute__ ((unused)))const
{
bool invert=param_invert.get(bool());
if (invert)
return param_color.get(Color());
else
return Color::alpha();
}
Color
Layer_Freetype::get_color(Context context, const synfig::Point &pos)const
{
if(needs_sync_)
const_cast<Layer_Freetype*>(this)->sync();
const Color color(color_func(pos,0));
if(!face)
return context.get_color(pos);
if(get_amount()==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
return color;
else
return Color::blend(color,context.get_color(pos),get_amount(),get_blend_method());
}
bool
Layer_Freetype::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
{
RENDER_TRANSFORMED_IF_NEED(__FILE__, __LINE__)
bool use_kerning=param_use_kerning.get(bool());
bool grid_fit=param_grid_fit.get(bool());
bool invert=param_invert.get(bool());
Color color=param_color.get(Color());
synfig::Point origin=param_origin.get(Point());
synfig::Vector orient=param_orient.get(Vector());
static synfig::RecMutex freetype_mutex;
if(needs_sync_)
const_cast<Layer_Freetype*>(this)->sync();
int error;
Vector size(Layer_Freetype::param_size.get(synfig::Vector())*2);
if(!context.accelerated_render(surface,quality,renddesc,cb))
return false;
if(is_disabled() || param_text.get(synfig::String()).empty())
return true;
// If there is no font loaded, just bail
if(!face)
{
if(cb)cb->warning(string("Layer_Freetype:")+_("No face loaded, no text will be rendered."));
return true;
}
String text(Layer_Freetype::param_text.get(synfig::String()));
if(text=="@_FILENAME_@" && get_canvas() && !get_canvas()->get_file_name().empty())
{
text=basename(get_canvas()->get_file_name());
}
// Width and Height of a pixel
Vector::value_type pw=renddesc.get_w()/(renddesc.get_br()[0]-renddesc.get_tl()[0]);
Vector::value_type ph=renddesc.get_h()/(renddesc.get_br()[1]-renddesc.get_tl()[1]);
// Calculate character width and height
int w=abs(round_to_int(size[0]*pw));
int h=abs(round_to_int(size[1]*ph));
//int bx=(int)((origin[0]-renddesc.get_tl()[0])*pw*64+0.5);
//int by=(int)((origin[1]-renddesc.get_tl()[1])*ph*64+0.5);
int bx=0;
int by=0;
// If the font is the size of a pixel, don't bother rendering any text
if(w<=1 || h<=1)
{
if(cb)cb->warning(string("Layer_Freetype:")+_("Text too small, no text will be rendered."));
return true;
}
synfig::RecMutex::Lock lock(freetype_mutex);
#define CHAR_RESOLUTION (64)
error = FT_Set_Char_Size(
face, // handle to face object
(int)CHAR_RESOLUTION, // char_width in 1/64th of points
(int)CHAR_RESOLUTION, // char_height in 1/64th of points
round_to_int(abs(size[0]*pw*CHAR_RESOLUTION)), // horizontal device resolution
round_to_int(abs(size[1]*ph*CHAR_RESOLUTION)) ); // vertical device resolution
// Here is where we can compensate for the
// error in freetype's rendering engine.
const Real xerror(abs(size[0]*pw)/(Real)face->size->metrics.x_ppem/1.13f/0.996);
const Real yerror(abs(size[1]*ph)/(Real)face->size->metrics.y_ppem/1.13f/0.996);
//synfig::info("xerror=%f, yerror=%f",xerror,yerror);
const Real compress(Layer_Freetype::param_compress.get(Real())*xerror);
const Real vcompress(Layer_Freetype::param_vcompress.get(Real())*yerror);
if(error)
{
if(cb)cb->warning(string("Layer_Freetype:")+_("Unable to set face size.")+strprintf(" (err=%d)",error));
}
FT_GlyphSlot slot = face->glyph; // a small shortcut
FT_UInt glyph_index(0);
FT_UInt previous(0);
int u,v;
std::list<TextLine> lines;
/*
-- ** -- CREATE GLYPHS -------------------------------------------------------
*/
mbstate_t ps;
memset(&ps, 0, sizeof(ps));
lines.push_front(TextLine());
string::const_iterator iter;
for (iter=text.begin(); iter!=text.end(); ++iter)
{
int multiplier(1);
if(*iter=='\n')
{
lines.push_front(TextLine());
bx=0;
by=0;
previous=0;
continue;
}
if(*iter=='\t')
{
multiplier=8;
glyph_index = FT_Get_Char_Index( face, ' ' );
}
else
{
// read uft8 char
unsigned int c = (unsigned char)*iter;
unsigned int code = c;
int bytes = 0;
while ((c & 0x80) != 0) { c = (c << 1) & 0xff; bytes++; }
bool bad_char = (bytes == 1);
if (bytes > 1)
{
bytes--;
code = c << (5*bytes - 1);
while (bytes > 0) {
iter++;
bytes--;
c = (unsigned char)*iter;
if (iter >= text.end() || (c & 0xc0) != 0x80) { bad_char = true; break; }
code |= (c & 0x3f) << (6 * bytes);
}
}
if (bad_char)
{
synfig::warning("Layer_Freetype: multibyte: %s",
_("Can't parse multibyte character.\n"));
continue;
}
glyph_index = FT_Get_Char_Index( face, code );
}
// retrieve kerning distance and move pen position
if ( FT_HAS_KERNING(face) && use_kerning && previous && glyph_index )
{
FT_Vector delta;
if(grid_fit)
FT_Get_Kerning( face, previous, glyph_index, ft_kerning_default, &delta );
else
FT_Get_Kerning( face, previous, glyph_index, ft_kerning_unfitted, &delta );
if(compress<1.0f)
{
bx += round_to_int(delta.x*compress);
by += round_to_int(delta.y*compress);
}
else
{
bx += delta.x;
by += delta.y;
}
}
Glyph curr_glyph;
// store current pen position
curr_glyph.pos.x = bx;
curr_glyph.pos.y = by;
// load glyph image into the slot. DO NOT RENDER IT !!
if(grid_fit)
error = FT_Load_Glyph( face, glyph_index, FT_LOAD_DEFAULT);
else
error = FT_Load_Glyph( face, glyph_index, FT_LOAD_DEFAULT|FT_LOAD_NO_HINTING );
if (error) continue; // ignore errors, jump to next glyph
// extract glyph image and store it in our table
error = FT_Get_Glyph( face->glyph, &curr_glyph.glyph );
if (error) continue; // ignore errors, jump to next glyph
// record current glyph index
previous = glyph_index;
// Update the line width
lines.front().width=bx+slot->advance.x;
// increment pen position
if(multiplier>1)
bx += round_to_int(slot->advance.x*multiplier*compress)-bx%round_to_int(slot->advance.x*multiplier*compress);
else
bx += round_to_int(slot->advance.x*compress*multiplier);
//bx += round_to_int(slot->advance.x*compress*multiplier);
//by += round_to_int(slot->advance.y*compress);
by += slot->advance.y*multiplier;
lines.front().glyph_table.push_back(curr_glyph);
}
//Real string_height;
//string_height=(((lines.size()-1)*face->size->metrics.height+lines.back().actual_height()));
//int string_height=face->size->metrics.ascender;
//#define METRICS_SCALE_ONE (65536.0f)
#define METRICS_SCALE_ONE ((Real)(1<<16))
Real line_height = vcompress*((Real)face->height*(((Real)face->size->metrics.y_scale/METRICS_SCALE_ONE)));
Real text_height = (lines.size() - 1)*line_height + lines.back().actual_height();
// This module sees to expect pixel height to be negative, as it
// usually is. But rendering to .bmp format causes ph to be
// positive, which was causing text to be rendered upside down.
//if (ph>0) line_height = -line_height;
//synfig::info("string_height=%d",string_height);
//synfig::info("line_height=%f",line_height);
/*
-- ** -- RENDER THE GLYPHS ---------------------------------------------------
*/
Surface src_;
Surface *src_surface;
src_surface=surface;
if(invert)
{
src_=*surface;
Surface::alpha_pen pen(surface->begin(),get_amount(),get_blend_method());
surface->fill(color,pen,src_.get_w(),src_.get_h());
src_surface=&src_;
}
{
int sign_y = ph >= 0.0 ? 1 : -1;
Real offset_x = (origin[0]-renddesc.get_tl()[0])*pw*CHAR_RESOLUTION;
Real offset_y = (origin[1]-renddesc.get_tl()[1])*ph*CHAR_RESOLUTION
- sign_y*text_height*(1.0 - orient[1]);
std::list<TextLine>::iterator iter;
int curr_line;
for(curr_line=0,iter=lines.begin();iter!=lines.end();++iter,curr_line++)
{
bx=round_to_int(offset_x - orient[0]*iter->width);
// I've no idea why 1.5, but it kind of works. Otherwise,
// rendering to .bmp (which renders from bottom to top, due to
// the .bmp format describing the image from bottom to top,
// renders text in the wrong place.
by=round_to_int(offset_y + sign_y*curr_line*line_height);
/*
by=round_to_int((origin[1]-renddesc.get_tl()[1])*ph*CHAR_RESOLUTION +
(1.0-orient[1])*string_height +
(ph>0 ? line_height*(lines.size()-1-curr_line)-lines.back().actual_height(): -line_height*curr_line));
*/
//by=round_to_int(vcompress*((origin[1]-renddesc.get_tl()[1])*ph*64+(1.0-orient[1])*string_height-face->size->metrics.height*curr_line));
//synfig::info("curr_line=%d, bx=%d, by=%d",curr_line,bx,by);
std::vector<Glyph>::iterator iter2;
for(iter2=iter->glyph_table.begin();iter2!=iter->glyph_table.end();++iter2)
{
FT_Glyph image(iter2->glyph);
FT_Vector pen;
FT_BitmapGlyph bit;
pen.x = bx + iter2->pos.x;
pen.y = by + iter2->pos.y;
//synfig::info("GLYPH: line %d, pen.x=%d, pen,y=%d",curr_line,(pen.x+32)>>6,(pen.y+32)>>6);
error = FT_Glyph_To_Bitmap( &image, ft_render_mode_normal,0/*&pen*/, 1 );
if(error) { FT_Done_Glyph( image ); continue; }
bit = (FT_BitmapGlyph)image;
for(v=0;v<(int)bit->bitmap.rows;v++)
for(u=0;u<(int)bit->bitmap.width;u++)
{
int x=u+((pen.x+32)>>6)+ bit->left;
int y=((pen.y+32)>>6) + (bit->top - v) * sign_y;
if( y>=0 &&
x>=0 &&
y<surface->get_h() &&
x<surface->get_w())
{
Real myamount=(Real)bit->bitmap.buffer[v*bit->bitmap.pitch+u]/255.0f;
if(invert)
myamount=1.0f-myamount;
(*surface)[y][x]=Color::blend(color,(*src_surface)[y][x],myamount*get_amount(),get_blend_method());
}
}
FT_Done_Glyph( image );
}
//iter->clear_and_free();
}
}
return true;
}
////
bool
Layer_Freetype::accelerated_cairorender(Context context, cairo_t *cr, int quality, const RendDesc &renddesc, ProgressCallback *cb)const
{
int style=param_style.get(int());
int weight=param_weight.get(int());
synfig::Vector size=param_size.get(Vector());
synfig::Real compress=param_compress.get(synfig::Real());
synfig::Real vcompress=param_vcompress.get(synfig::Real());
bool invert=param_invert.get(bool());
Color color=param_color.get(Color());
synfig::Point origin=param_origin.get(Point());
synfig::Vector orient=param_orient.get(Vector());
synfig::String font=param_font.get(synfig::String());
synfig::String text=param_text.get(synfig::String());
if(!is_solid_color())
{
// Initially render what's behind us
if(!context.accelerated_cairorender(cr,quality,renddesc,cb))
{
if(cb)cb->error(strprintf(__FILE__"%d: Accelerated Cairo Renderer Failure",__LINE__));
return false;
}
}
RendDesc workdesc(renddesc);
// Untransform the render desc
if(!cairo_renddesc_untransform(cr, workdesc))
return false;
// New expanded workdesc values
const int ww=workdesc.get_w();
const int wh=workdesc.get_h();
const double wtlx=workdesc.get_tl()[0];
const double wtly=workdesc.get_tl()[1];
const double wpw=workdesc.get_pw();
const double wph=workdesc.get_ph();
const double wsx=1/wpw;
const double wsy=1/wph;
const double wtx=(-wtlx+origin[0])*wsx;
const double wty=(-wtly+origin[1])*wsy;
// Cairo context
cairo_surface_t* subimage = NULL;
cairo_surface_t* inverted = NULL;
subimage=cairo_surface_create_similar(cairo_get_target(cr), CAIRO_CONTENT_COLOR_ALPHA, ww, wh);
cairo_t* subcr=cairo_create(subimage);
cairo_t* invertcr = NULL;
if(invert)
{
inverted=cairo_surface_create_similar(cairo_get_target(cr), CAIRO_CONTENT_COLOR_ALPHA, ww, wh);
invertcr=cairo_create(inverted);
cairo_set_source_rgba(invertcr, color.get_r(), color.get_g(), color.get_b(), color.get_a());
cairo_paint_with_alpha(invertcr, get_amount());
}
// Pango
PangoLayout *layout;
PangoFontDescription *font_description;
// Pango Font
font_description = pango_font_description_new ();
pango_font_description_set_family (font_description, font.c_str());
pango_font_description_set_weight (font_description, PangoWeight(weight));
pango_font_description_set_style (font_description, PangoStyle(style));
// The size is scaled to match Software render size (remove the scale?)
Real sizex=1.75*fabs(size[0])*fabs(wsx);
Real sizey=1.75*fabs(size[1])*fabs(wsy);
Real vscale=sizey/sizex;
pango_font_description_set_absolute_size (font_description, sizex * PANGO_SCALE );
//Pango Layout
layout = pango_cairo_create_layout (subcr);
pango_layout_set_font_description (layout, font_description);
pango_layout_set_text (layout, text.c_str(), -1);
if(orient[0]<0.4)
pango_layout_set_alignment(layout, PANGO_ALIGN_LEFT);
else if(orient[0]>0.6)
pango_layout_set_alignment(layout, PANGO_ALIGN_RIGHT);
else
pango_layout_set_alignment(layout, PANGO_ALIGN_CENTER);
pango_layout_set_single_paragraph_mode(layout, false);
// Calculate the logical and ink rectangles of the layout before add spacing
PangoRectangle ink_layout, logical_layout;
PangoRectangle ink_rect, logical_rect;
pango_layout_get_pixel_extents(layout, &ink_layout, &logical_layout);
// Spacing
// Horizontal
PangoAttrList* attrlist=pango_attr_list_new();
Real hspace=compress>1.0?0.4*sizex*(compress-1.0):(compress<1.0)?0.5*sizex*(compress-1.0):0;
PangoAttribute* spacing=pango_attr_letter_spacing_new(hspace*PANGO_SCALE);
pango_attr_list_insert_before(attrlist, spacing);
pango_layout_set_attributes(layout, attrlist);
// Vertical
int total_lines=pango_layout_get_line_count(layout);
Real vspace_total=vcompress>1.0?0.4*logical_layout.height*(vcompress-1.0):(vcompress<1.0)?0.6*logical_layout.height*(vcompress-1.0):0;
Real vspace=0;
if(total_lines>1)
vspace=vspace_total/(total_lines-1);
pango_layout_set_spacing(layout, vspace*PANGO_SCALE);
// Recalculate extents due to spacing changes
pango_layout_get_pixel_extents(layout, &ink_layout, &logical_layout);
// Render text
cairo_save(subcr);
cairo_set_source_rgba(subcr, color.get_r(), color.get_g(), color.get_b(), color.get_a());
cairo_scale(subcr, 1.0, vscale);
pango_cairo_update_layout(subcr, layout);
cairo_move_to(subcr, wtx-logical_layout.width*orient[0], (wty-(logical_layout.height+vspace_total)*vscale*orient[1])/vscale);
pango_cairo_show_layout(subcr, layout);
// Debug ink and logical lines
if(0)
{
pango_layout_get_pixel_extents(layout, &ink_rect, &logical_rect);
// Render logical and ink rectangles
cairo_save(subcr);
cairo_set_source_rgb(subcr, 0.0, 1.0, 0.0);
cairo_set_line_width(subcr, 1.0);
cairo_rectangle(subcr, wtx+ink_rect.x-0.5-logical_layout.width*orient[0],
wty+ink_rect.y-0.5-(logical_layout.height+vspace_total)*orient[1],
ink_rect.width,
ink_rect.height);
cairo_stroke(subcr);
cairo_restore(subcr);
cairo_save(subcr);
cairo_set_line_width(subcr, 1.0);
cairo_set_source_rgb(subcr, 0.0, 0.0, 1.0);
cairo_rectangle(subcr, wtx+logical_rect.x-0.5-logical_layout.width*orient[0],
wty+logical_rect.y-0.5-(logical_layout.height+vspace_total)*orient[1],
logical_rect.width,
logical_rect.height);
cairo_stroke(subcr);
cairo_move_to(subcr, wtx+2, wty);
cairo_arc(subcr, wtx, wty, 2.0, 0, 2*3.141516);
cairo_fill(subcr);
cairo_restore(subcr);
}
cairo_restore(subcr);
cairo_save(cr);
// Render the text on the target surface with the proper operator
if(invert)
{
cairo_set_source_surface(invertcr, subimage, 0,0);
cairo_set_operator(invertcr, CAIRO_OPERATOR_DEST_OUT);
cairo_paint_with_alpha(invertcr, get_amount());
}
// Need to scale down to user coordinates before pass to cr
cairo_translate(cr, wtlx, wtly);
cairo_scale(cr, wpw, wph);
if(invert)
cairo_set_source_surface(cr, inverted, 0, 0);
else
cairo_set_source_surface(cr, subimage, 0, 0);
if(is_solid_color())
{
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
cairo_paint(cr);
}
else
{
cairo_paint_with_alpha_operator(cr, get_amount(), get_blend_method());
}
cairo_restore(cr);
// Destroy and return
cairo_surface_destroy(subimage);
cairo_destroy(subcr);
if(invert)
{
cairo_surface_destroy(inverted);
cairo_destroy(invertcr);
}
pango_attr_list_unref(attrlist);
g_object_unref (layout);
pango_font_description_free (font_description);
return true;
}
////
synfig::Rect
Layer_Freetype::get_bounding_rect()const
{
if(needs_sync_)
const_cast<Layer_Freetype*>(this)->sync();
// if(!is_disabled())
return synfig::Rect::full_plane();
}