lyr_freetype.h

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/* === S Y N F I G ========================================================= */
/* === S T A R T =========================================================== */

#ifndef __SYNFIG_LYR_FREETYPE_H
#define __SYNFIG_LYR_FREETYPE_H

/* === H E A D E R S ======================================================= */

//#ifdef __APPLE__
//#define USE_MAC_FT_FUNCS  (1)
//#endif

#include <synfig/layers/layer_composite.h>
#include <synfig/vector.h>
#include <synfig/color.h>
#include <synfig/string.h>

#include <ft2build.h>
#include FT_FREETYPE_H
#include FT_GLYPH_H
#include <vector>

#include <synfig/string.h>
#include <synfig/time.h>
#include <synfig/context.h>
#include <synfig/paramdesc.h>
#include <synfig/renddesc.h>
#include <synfig/surface.h>
#include <synfig/value.h>
#include <synfig/valuenode.h>
#include <synfig/canvas.h>


#include <ETL/misc>

#ifdef USE_MAC_FT_FUNCS
    #include <CoreServices/CoreServices.h>
    #include FT_MAC_H
#endif

/* === M A C R O S ========================================================= */

/* === T Y P E D E F S ===================================================== */

/* === C L A S S E S & S T R U C T S ======================================= */

using namespace synfig;
using namespace std;
using namespace etl;


struct Glyph
{
    FT_Glyph glyph;
    FT_Vector pos;
    //int width;
};
struct TextLine
{
    int width;
    std::vector<Glyph> glyph_table;

    TextLine():width(0) { }
    void clear_and_free();

    int actual_height()const
    {
        int height(0);

        std::vector<Glyph>::const_iterator iter;
        for(iter=glyph_table.begin();iter!=glyph_table.end();++iter)
        {
            FT_BBox   glyph_bbox;

            //FT_Glyph_Get_CBox( glyphs[n], ft_glyph_bbox_pixels, &glyph_bbox );
            FT_Glyph_Get_CBox( iter->glyph, ft_glyph_bbox_subpixels, &glyph_bbox );

            if(glyph_bbox.yMax>height)
                height=glyph_bbox.yMax;
        }
        return height;
    }
};


class Layer_Freetype : public synfig::Layer_Composite, public synfig::Layer_NoDeform
{
    SYNFIG_LAYER_MODULE_EXT
private:
    ValueBase param_text;
    ValueBase param_color;
    ValueBase param_family;
    ValueBase param_style;
    ValueBase param_weight;
    ValueBase param_compress;
    ValueBase param_vcompress;
    ValueBase param_size;
    ValueBase param_orient;
    ValueBase param_origin;
    ValueBase param_font;
    ValueBase param_use_kerning;
    ValueBase param_grid_fit;
    ValueBase param_invert;

    FT_Face face;

    bool old_version;
    bool needs_sync_;

    void sync();

    synfig::Color color_func(const synfig::Point &x, int quality=10, float supersample=0)const;

    mutable synfig::Mutex mutex;

public:
    Layer_Freetype();
    virtual ~Layer_Freetype();

    virtual bool set_param(const String & param, const synfig::ValueBase &value);
    virtual ValueBase get_param(const String & param)const;
    virtual Color get_color(Context context, const synfig::Point &pos)const;
    virtual bool accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const;
    virtual bool accelerated_cairorender(Context context,cairo_t *cr, int quality, const RendDesc &renddesc, ProgressCallback *cb)const;

    virtual Vocab get_param_vocab()const;

    virtual bool set_version(const String &ver){if(ver=="0.1")old_version=true;return true;}
    virtual void reset_version(){old_version=false;}

    virtual synfig::Rect get_bounding_rect()const;

private:
    void new_font(const synfig::String &family, int style=0, int weight=400);
    bool new_font_(const synfig::String &family, int style=0, int weight=400);
    bool new_face(const synfig::String &newfont);
};

extern FT_Library ft_library;

/* === E N D =============================================================== */

#endif