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ft2font.cpp
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2503 lines (2141 loc) · 79.3 KB
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/* -*- mode: c++; c-basic-offset: 4 -*- */
#include "ft2font.h"
#include "mplutils.h"
#include <sstream>
#include "file_compat.h"
#include "numpy/arrayobject.h"
/*
By definition, FT_FIXED as 2 16bit values stored in a single long.
We cast to long to ensure the correct Py::Int convertor is called
*/
#define FIXED_MAJOR(val) (long) ((val & 0xffff000) >> 16)
#define FIXED_MINOR(val) (long) (val & 0xffff)
/**
To improve the hinting of the fonts, this code uses a hack
presented here:
http://antigrain.com/research/font_rasterization/index.html
The idea is to limit the effect of hinting in the x-direction, while
preserving hinting in the y-direction. Since freetype does not
support this directly, the dpi in the x-direction is set higher than
in the y-direction, which affects the hinting grid. Then, a global
transform is placed on the font to shrink it back to the desired
size. While it is a bit surprising that the dpi setting affects
hinting, whereas the global transform does not, this is documented
behavior of freetype, and therefore hopefully unlikely to change.
The freetype 2 tutorial says:
NOTE: The transformation is applied to every glyph that is
loaded through FT_Load_Glyph and is completely independent of
any hinting process. This means that you won't get the same
results if you load a glyph at the size of 24 pixels, or a glyph
at the size at 12 pixels scaled by 2 through a transform,
because the hints will have been computed differently (except
you have disabled hints).
*/
FT_Library _ft2Library;
FT2Image::FT2Image(Py::PythonClassInstance *self, Py::Tuple &args, Py::Dict &kwds) :
Py::PythonClass< FT2Image >(self, args, kwds),
_isDirty(true),
_buffer(NULL),
_width(0), _height(0)
{
_VERBOSE("FT2Image::FT2Image");
args.verify_length(2);
int width = Py::Int(args[0]);
int height = Py::Int(args[1]);
resize(width, height);
}
FT2Image::~FT2Image() {
delete [] _buffer;
_buffer = NULL;
}
Py::PythonClassObject<FT2Image> FT2Image::factory(int width, int height)
{
Py::Callable class_type(type());
Py::Tuple args(2);
args[0] = Py::Int(width);
args[1] = Py::Int(height);
Py::PythonClassObject<FT2Image> o = Py::PythonClassObject<FT2Image>(
class_type.apply(args, Py::Dict()));
return o;
}
void
FT2Image::resize(long width, long height)
{
if (width < 0)
{
width = 1;
}
if (height < 0)
{
height = 1;
}
size_t numBytes = width * height;
if ((unsigned long)width != _width || (unsigned long)height != _height)
{
if (numBytes > _width*_height)
{
delete [] _buffer;
_buffer = NULL;
_buffer = new unsigned char [numBytes];
}
_width = (unsigned long)width;
_height = (unsigned long)height;
}
memset(_buffer, 0, numBytes);
_isDirty = true;
}
void
FT2Image::draw_bitmap(FT_Bitmap* bitmap,
FT_Int x,
FT_Int y)
{
_VERBOSE("FT2Image::draw_bitmap");
FT_Int image_width = (FT_Int)_width;
FT_Int image_height = (FT_Int)_height;
FT_Int char_width = bitmap->width;
FT_Int char_height = bitmap->rows;
FT_Int x1 = CLAMP(x, 0, image_width);
FT_Int y1 = CLAMP(y, 0, image_height);
FT_Int x2 = CLAMP(x + char_width, 0, image_width);
FT_Int y2 = CLAMP(y + char_height, 0, image_height);
FT_Int x_start = MAX(0, -x);
FT_Int y_offset = y1 - MAX(0, -y);
if (bitmap->pixel_mode == FT_PIXEL_MODE_GRAY) {
for (FT_Int i = y1; i < y2; ++i)
{
unsigned char* dst = _buffer + (i * image_width + x1);
unsigned char* src = bitmap->buffer + (((i - y_offset) * bitmap->pitch) + x_start);
for (FT_Int j = x1; j < x2; ++j, ++dst, ++src)
*dst |= *src;
}
} else if (bitmap->pixel_mode == FT_PIXEL_MODE_MONO) {
for (FT_Int i = y1; i < y2; ++i)
{
unsigned char* dst = _buffer + (i * image_width + x1);
unsigned char* src = bitmap->buffer + ((i - y_offset) * bitmap->pitch);
for (FT_Int j = x1; j < x2; ++j, ++dst) {
int x = (j - x1 + x_start);
int val = *(src + (x >> 3)) & (1 << (7 - (x & 0x7)));
*dst = val ? 255 : *dst;
}
}
} else {
throw Py::Exception("Unknown pixel mode");
}
_isDirty = true;
}
void
FT2Image::write_bitmap(FILE *fh) const
{
for (size_t i = 0; i < _height; i++)
{
for (size_t j = 0; j < _width; ++j)
{
if (_buffer[j + i*_width])
{
fputc('#', fh);
}
else
{
fputc(' ', fh);
}
}
fputc('\n', fh);
}
}
char FT2Image::write_bitmap__doc__[] =
"write_bitmap(fname)\n"
"\n"
"Write the bitmap to file fname\n"
;
Py::Object
FT2Image::py_write_bitmap(const Py::Tuple & args)
{
_VERBOSE("FT2Image::write_bitmap");
PyObject *py_file;
FILE *fh;
mpl_off_t offset;
args.verify_length(1);
if ((py_file = mpl_PyFile_OpenFile(args[0].ptr(), (char *)"wb")) == NULL) {
throw Py::Exception();
}
fh = mpl_PyFile_Dup(py_file, (char *)"wb", &offset);
write_bitmap(fh);
if (mpl_PyFile_DupClose(py_file, fh, offset))
{
throw Py::Exception();
}
mpl_PyFile_CloseFile(py_file);
Py_DECREF(py_file);
return Py::Object();
}
PYCXX_VARARGS_METHOD_DECL(FT2Image, py_write_bitmap)
void
FT2Image::draw_rect(unsigned long x0, unsigned long y0,
unsigned long x1, unsigned long y1)
{
if (x0 > _width || x1 > _width ||
y0 > _height || y1 > _height)
{
throw Py::ValueError("Rect coords outside image bounds");
}
size_t top = y0 * _width;
size_t bottom = y1 * _width;
for (size_t i = x0; i < x1 + 1; ++i)
{
_buffer[i + top] = 255;
_buffer[i + bottom] = 255;
}
for (size_t j = y0 + 1; j < y1; ++j)
{
_buffer[x0 + j*_width] = 255;
_buffer[x1 + j*_width] = 255;
}
_isDirty = true;
}
char FT2Image::draw_rect__doc__[] =
"draw_rect(x0, y0, x1, y1)\n"
"\n"
"Draw a rect to the image.\n"
"\n"
;
Py::Object
FT2Image::py_draw_rect(const Py::Tuple & args)
{
_VERBOSE("FT2Image::draw_rect");
args.verify_length(4);
long x0 = Py::Int(args[0]);
long y0 = Py::Int(args[1]);
long x1 = Py::Int(args[2]);
long y1 = Py::Int(args[3]);
draw_rect(x0, y0, x1, y1);
return Py::Object();
}
PYCXX_VARARGS_METHOD_DECL(FT2Image, py_draw_rect)
void
FT2Image::draw_rect_filled(unsigned long x0, unsigned long y0,
unsigned long x1, unsigned long y1)
{
x0 = std::min(x0, _width);
y0 = std::min(y0, _height);
x1 = std::min(x1, _width);
y1 = std::min(y1, _height);
for (size_t j = y0; j < y1 + 1; j++)
{
for (size_t i = x0; i < x1 + 1; i++)
{
_buffer[i + j*_width] = 255;
}
}
_isDirty = true;
}
char FT2Image::draw_rect_filled__doc__[] =
"draw_rect_filled(x0, y0, x1, y1)\n"
"\n"
"Draw a filled rect to the image.\n"
"\n"
;
Py::Object
FT2Image::py_draw_rect_filled(const Py::Tuple & args)
{
_VERBOSE("FT2Image::draw_rect_filled");
args.verify_length(4);
long x0 = Py::Int(args[0]);
long y0 = Py::Int(args[1]);
long x1 = Py::Int(args[2]);
long y1 = Py::Int(args[3]);
draw_rect_filled(x0, y0, x1, y1);
return Py::Object();
}
PYCXX_VARARGS_METHOD_DECL(FT2Image, py_draw_rect_filled)
char FT2Image::as_str__doc__[] =
"s = image.as_str()\n"
"\n"
"Return the image buffer as a string\n"
"\n"
;
Py::Object
FT2Image::py_as_str(const Py::Tuple & args)
{
_VERBOSE("FT2Image::as_str");
args.verify_length(0);
return Py::asObject
(PyBytes_FromStringAndSize((const char *)_buffer, _width*_height));
}
PYCXX_VARARGS_METHOD_DECL(FT2Image, py_as_str)
char FT2Image::as_rgba_str__doc__[] =
"s = image.as_rgba_str()\n"
"\n"
"Return the image buffer as a RGBA string\n"
"\n"
;
Py::Object
FT2Image::py_as_rgba_str(const Py::Tuple & args)
{
_VERBOSE("FT2Image::as_str");
args.verify_length(0);
Py_ssize_t size = _width*_height*4;
PyObject* result = PyBytes_FromStringAndSize(NULL, size);
unsigned char *src = _buffer;
unsigned char *src_end = src + (_width * _height);
unsigned char *dst = (unsigned char *)PyBytes_AS_STRING(result);
while (src != src_end)
{
*dst++ = 0;
*dst++ = 0;
*dst++ = 0;
*dst++ = *src++;
}
return Py::asObject(result);
}
PYCXX_VARARGS_METHOD_DECL(FT2Image, py_as_rgba_str)
/* TODO: This could take a color as an argument, but for
now it defaults to black on white background */
char FT2Image::as_rgb_str__doc__[] =
"s = image.as_rgb_str()\n"
"\n"
"Return the image buffer as a RGB string\n"
"\n"
;
Py::Object
FT2Image::py_as_rgb_str(const Py::Tuple & args)
{
_VERBOSE("FT2Image::as_str");
args.verify_length(0);
Py_ssize_t size = _width*_height*3;
PyObject* result = PyBytes_FromStringAndSize(NULL, size);
unsigned char *src = _buffer;
unsigned char *src_end = src + (_width * _height);
unsigned char *dst = (unsigned char *)PyBytes_AS_STRING(result);
while (src != src_end)
{
unsigned char tmp = 255 - *src++;
*dst++ = tmp;
*dst++ = tmp;
*dst++ = tmp;
}
return Py::asObject(result);
}
PYCXX_VARARGS_METHOD_DECL(FT2Image, py_as_rgb_str)
char FT2Image::as_array__doc__[] =
"x = image.as_array()\n"
"\n"
"Return the image buffer as a width x height numpy array of ubyte \n"
"\n"
;
Py::Object
FT2Image::py_as_array(const Py::Tuple & args)
{
_VERBOSE("FT2Image::as_array");
args.verify_length(0);
npy_intp dimensions[2];
dimensions[0] = get_height(); //numrows
dimensions[1] = get_width(); //numcols
PyArrayObject *A = (PyArrayObject *) PyArray_SimpleNewFromData(2, dimensions, PyArray_UBYTE, _buffer);
return Py::asObject((PyObject*)A);
}
PYCXX_VARARGS_METHOD_DECL(FT2Image, py_as_array)
Py::Object
FT2Image::py_get_width(const Py::Tuple & args)
{
_VERBOSE("FT2Image::get_width");
args.verify_length(0);
return Py::Int((long)get_width());
}
PYCXX_VARARGS_METHOD_DECL(FT2Image, py_get_width)
Py::Object
FT2Image::py_get_height(const Py::Tuple & args)
{
_VERBOSE("FT2Image::get_height");
args.verify_length(0);
return Py::Int((long)get_height());
}
PYCXX_VARARGS_METHOD_DECL(FT2Image, py_get_height)
Py::PythonClassObject<Glyph> Glyph::factory(
const FT_Face& face, const FT_Glyph& glyph, size_t ind, long hinting_factor)
{
Py::Callable class_type(type());
Py::PythonClassObject<Glyph> obj = Py::PythonClassObject<Glyph>(
class_type.apply(Py::Tuple(), Py::Dict()));
Glyph* o = obj.getCxxObject();
o->glyphInd = ind;
FT_BBox bbox;
FT_Glyph_Get_CBox(glyph, ft_glyph_bbox_subpixels, &bbox);
o->setattro("width", Py::Int(face->glyph->metrics.width / hinting_factor));
o->setattro("height", Py::Int(face->glyph->metrics.height));
o->setattro("horiBearingX", Py::Int(face->glyph->metrics.horiBearingX / hinting_factor));
o->setattro("horiBearingY", Py::Int(face->glyph->metrics.horiBearingY));
o->setattro("horiAdvance", Py::Int(face->glyph->metrics.horiAdvance));
o->setattro("linearHoriAdvance", Py::Int(face->glyph->linearHoriAdvance / hinting_factor));
o->setattro("vertBearingX", Py::Int(face->glyph->metrics.vertBearingX));
o->setattro("vertBearingY", Py::Int(face->glyph->metrics.vertBearingY));
o->setattro("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);
o->setattro("bbox", abbox);
return obj;
}
Glyph::~Glyph()
{
_VERBOSE("Glyph::~Glyph");
}
int
Glyph::setattro(const Py::String &name, const Py::Object &value)
{
_VERBOSE("Glyph::setattr");
__dict__[name] = value;
return 0;
}
Py::Object
Glyph::getattro(const Py::String &name)
{
_VERBOSE("Glyph::getattr");
if (__dict__.hasKey(name)) return __dict__[name];
else return genericGetAttro(name);
}
inline double conv(int v)
{
return double(v) / 64.0;
}
char FT2Font::get_path__doc__[] =
"get_path()\n"
"\n"
"Get the path data from the currently loaded glyph as a tuple of vertices, codes.\n"
;
Py::Object
FT2Font::get_path()
{
//get the glyph as a path, a list of (COMMAND, *args) as desribed in matplotlib.path
// this code is from agg's decompose_ft_outline with minor modifications
if (!face->glyph) {
throw Py::ValueError("No glyph loaded");
}
enum {STOP = 0,
MOVETO = 1,
LINETO = 2,
CURVE3 = 3,
CURVE4 = 4,
ENDPOLY = 0x4f};
FT_Outline& outline = face->glyph->outline;
bool flip_y = false; //todo, pass me as kwarg
FT_Vector v_last;
FT_Vector v_control;
FT_Vector v_start;
FT_Vector* point;
FT_Vector* limit;
char* tags;
int n; // index of contour in outline
int first; // index of first point in contour
char tag; // current point's state
int count;
count = 0;
first = 0;
for (n = 0; n < outline.n_contours; n++)
{
int last; // index of last point in contour
bool starts_with_last;
last = outline.contours[n];
limit = outline.points + last;
v_start = outline.points[first];
v_last = outline.points[last];
v_control = v_start;
point = outline.points + first;
tags = outline.tags + first;
tag = FT_CURVE_TAG(tags[0]);
// A contour cannot start with a cubic control point!
if (tag == FT_CURVE_TAG_CUBIC)
{
throw Py::RuntimeError("A contour cannot start with a cubic control point");
}
else if (tag == FT_CURVE_TAG_CONIC)
{
starts_with_last = true;
} else {
starts_with_last = false;
}
count++;
while (point < limit)
{
if (!starts_with_last) {
point++;
tags++;
}
starts_with_last = false;
tag = FT_CURVE_TAG(tags[0]);
switch (tag)
{
case FT_CURVE_TAG_ON: // emit a single line_to
{
count++;
continue;
}
case FT_CURVE_TAG_CONIC: // consume conic arcs
{
Count_Do_Conic:
if (point < limit)
{
point++;
tags++;
tag = FT_CURVE_TAG(tags[0]);
if (tag == FT_CURVE_TAG_ON)
{
count += 2;
continue;
}
if (tag != FT_CURVE_TAG_CONIC)
{
throw Py::RuntimeError("Invalid font");
}
count += 2;
goto Count_Do_Conic;
}
count += 2;
goto Count_Close;
}
default: // FT_CURVE_TAG_CUBIC
{
if (point + 1 > limit || FT_CURVE_TAG(tags[1]) != FT_CURVE_TAG_CUBIC)
{
throw Py::RuntimeError("Invalid font");
}
point += 2;
tags += 2;
if (point <= limit)
{
count += 3;
continue;
}
count += 3;
goto Count_Close;
}
}
}
count++;
Count_Close:
first = last + 1;
}
PyArrayObject* vertices = NULL;
PyArrayObject* codes = NULL;
Py::Tuple result(2);
npy_intp vertices_dims[2] = {count, 2};
vertices = (PyArrayObject*)PyArray_SimpleNew(
2, vertices_dims, PyArray_DOUBLE);
if (vertices == NULL) {
throw;
}
npy_intp codes_dims[1] = {count};
codes = (PyArrayObject*)PyArray_SimpleNew(
1, codes_dims, PyArray_UINT8);
if (codes == NULL) {
throw;
}
result[0] = Py::Object((PyObject*)vertices, true);
result[1] = Py::Object((PyObject*)codes, true);
double* outpoints = (double *)PyArray_DATA(vertices);
unsigned char* outcodes = (unsigned char *)PyArray_DATA(codes);
first = 0;
for (n = 0; n < outline.n_contours; n++)
{
int last; // index of last point in contour
bool starts_with_last;
last = outline.contours[n];
limit = outline.points + last;
v_start = outline.points[first];
v_last = outline.points[last];
v_control = v_start;
point = outline.points + first;
tags = outline.tags + first;
tag = FT_CURVE_TAG(tags[0]);
double x, y;
if (tag != FT_CURVE_TAG_ON)
{
x = conv(v_last.x);
y = flip_y ? -conv(v_last.y) : conv(v_last.y);
starts_with_last = true;
} else {
x = conv(v_start.x);
y = flip_y ? -conv(v_start.y) : conv(v_start.y);
starts_with_last = false;
}
*(outpoints++) = x;
*(outpoints++) = y;
*(outcodes++) = MOVETO;
while (point < limit)
{
if (!starts_with_last) {
point++;
tags++;
}
starts_with_last = false;
tag = FT_CURVE_TAG(tags[0]);
switch (tag)
{
case FT_CURVE_TAG_ON: // emit a single line_to
{
double x = conv(point->x);
double y = flip_y ? -conv(point->y) : conv(point->y);
*(outpoints++) = x;
*(outpoints++) = y;
*(outcodes++) = LINETO;
continue;
}
case FT_CURVE_TAG_CONIC: // consume conic arcs
{
v_control.x = point->x;
v_control.y = point->y;
Do_Conic:
if (point < limit)
{
FT_Vector vec;
FT_Vector v_middle;
point++;
tags++;
tag = FT_CURVE_TAG(tags[0]);
vec.x = point->x;
vec.y = point->y;
if (tag == FT_CURVE_TAG_ON)
{
double xctl = conv(v_control.x);
double yctl = flip_y ? -conv(v_control.y) : conv(v_control.y);
double xto = conv(vec.x);
double yto = flip_y ? -conv(vec.y) : conv(vec.y);
*(outpoints++) = xctl;
*(outpoints++) = yctl;
*(outpoints++) = xto;
*(outpoints++) = yto;
*(outcodes++) = CURVE3;
*(outcodes++) = CURVE3;
continue;
}
v_middle.x = (v_control.x + vec.x) / 2;
v_middle.y = (v_control.y + vec.y) / 2;
double xctl = conv(v_control.x);
double yctl = flip_y ? -conv(v_control.y) : conv(v_control.y);
double xto = conv(v_middle.x);
double yto = flip_y ? -conv(v_middle.y) : conv(v_middle.y);
*(outpoints++) = xctl;
*(outpoints++) = yctl;
*(outpoints++) = xto;
*(outpoints++) = yto;
*(outcodes++) = CURVE3;
*(outcodes++) = CURVE3;
v_control = vec;
goto Do_Conic;
}
double xctl = conv(v_control.x);
double yctl = flip_y ? -conv(v_control.y) : conv(v_control.y);
double xto = conv(v_start.x);
double yto = flip_y ? -conv(v_start.y) : conv(v_start.y);
*(outpoints++) = xctl;
*(outpoints++) = yctl;
*(outpoints++) = xto;
*(outpoints++) = yto;
*(outcodes++) = CURVE3;
*(outcodes++) = CURVE3;
goto Close;
}
default: // FT_CURVE_TAG_CUBIC
{
FT_Vector vec1, vec2;
vec1.x = point[0].x;
vec1.y = point[0].y;
vec2.x = point[1].x;
vec2.y = point[1].y;
point += 2;
tags += 2;
if (point <= limit)
{
FT_Vector vec;
vec.x = point->x;
vec.y = point->y;
double xctl1 = conv(vec1.x);
double yctl1 = flip_y ? -conv(vec1.y) : conv(vec1.y);
double xctl2 = conv(vec2.x);
double yctl2 = flip_y ? -conv(vec2.y) : conv(vec2.y);
double xto = conv(vec.x);
double yto = flip_y ? -conv(vec.y) : conv(vec.y);
(*outpoints++) = xctl1;
(*outpoints++) = yctl1;
(*outpoints++) = xctl2;
(*outpoints++) = yctl2;
(*outpoints++) = xto;
(*outpoints++) = yto;
(*outcodes++) = CURVE4;
(*outcodes++) = CURVE4;
(*outcodes++) = CURVE4;
continue;
}
double xctl1 = conv(vec1.x);
double yctl1 = flip_y ? -conv(vec1.y) : conv(vec1.y);
double xctl2 = conv(vec2.x);
double yctl2 = flip_y ? -conv(vec2.y) : conv(vec2.y);
double xto = conv(v_start.x);
double yto = flip_y ? -conv(v_start.y) : conv(v_start.y);
(*outpoints++) = xctl1;
(*outpoints++) = yctl1;
(*outpoints++) = xctl2;
(*outpoints++) = yctl2;
(*outpoints++) = xto;
(*outpoints++) = yto;
(*outcodes++) = CURVE4;
(*outcodes++) = CURVE4;
(*outcodes++) = CURVE4;
goto Close;
}
}
}
(*outpoints++) = 0.0;
(*outpoints++) = 0.0;
(*outcodes++) = ENDPOLY;
Close:
first = last + 1;
}
if (outcodes - (unsigned char *)PyArray_DATA(codes) != count) {
throw Py::RuntimeError("Font path size doesn't match");
}
return result;
}
PYCXX_NOARGS_METHOD_DECL(FT2Font, get_path)
FT2Font::FT2Font(Py::PythonClassInstance *self, Py::Tuple &args, Py::Dict &kwds) :
Py::PythonClass<FT2Font>(self, args, kwds),
image()
{
FT_Open_Args open_args;
/* This string is only used for error messages, so encode it in something
* that we'll always be able to print. */
std::string facefile = Py::String(args[0]).encode("unicode_escape");
args.verify_length(1);
clear(Py::Tuple(0));
memset(&stream, 0, sizeof(FT_StreamRec));
mem = NULL;
mem_size = 0;
if (make_open_args(args[0].ptr(), &open_args)) {
/* make_open_args sets the Python exception for us. */
throw Py::Exception();
}
int error = FT_Open_Face(_ft2Library, &open_args, 0, &face);
if (error == FT_Err_Unknown_File_Format)
{
std::ostringstream s;
s << "Could not load facefile " << facefile << "; Unknown_File_Format" << std::endl;
throw Py::RuntimeError(s.str());
}
else if (error == FT_Err_Cannot_Open_Resource)
{
std::ostringstream s;
s << "Could not open facefile " << facefile << "; Cannot_Open_Resource" << std::endl;
throw Py::RuntimeError(s.str());
}
else if (error == FT_Err_Invalid_File_Format)
{
std::ostringstream s;
s << "Could not open facefile " << facefile << "; Invalid_File_Format" << std::endl;
throw Py::RuntimeError(s.str());
}
else if (error)
{
std::ostringstream s;
s << "Could not open facefile " << facefile << "; freetype error code " << error << std::endl;
throw Py::RuntimeError(s.str());
}
// set a default fontsize 12 pt at 72dpi
hinting_factor = 8;
if (kwds.hasKey("hinting_factor"))
{
hinting_factor = Py::Long(kwds["hinting_factor"]);
}
error = FT_Set_Char_Size(face, 12 * 64, 0, 72 * hinting_factor, 72);
static FT_Matrix transform = { 65536 / hinting_factor, 0, 0, 65536 };
FT_Set_Transform(face, &transform, 0);
if (error)
{
std::ostringstream s;
s << "Could not set the fontsize for facefile " << facefile << std::endl;
throw Py::RuntimeError(s.str());
}
// set some face props as attributes
//small memory leak fixed after 2.1.8
//fields can be null so we have to check this first
const char* ps_name = FT_Get_Postscript_Name(face);
if (ps_name == NULL)
{
ps_name = "UNAVAILABLE";
}
const char* family_name = face->family_name;
if (family_name == NULL)
{
family_name = "UNAVAILABLE";
}
const char* style_name = face->style_name;
if (style_name == NULL)
{
style_name = "UNAVAILABLE";
}
setattro("postscript_name", Py::String(ps_name));
setattro("num_faces", Py::Int(face->num_faces));
setattro("family_name", Py::String(family_name));
setattro("style_name", Py::String(style_name));
setattro("face_flags", Py::Int(face->face_flags));
setattro("style_flags", Py::Int(face->style_flags));
setattro("num_glyphs", Py::Int(face->num_glyphs));
setattro("num_fixed_sizes", Py::Int(face->num_fixed_sizes));
setattro("num_charmaps", Py::Int(face->num_charmaps));
int scalable = FT_IS_SCALABLE(face);
setattro("scalable", Py::Int(scalable));
if (scalable)
{
setattro("units_per_EM", Py::Int(face->units_per_EM));
Py::Tuple bbox(4);
bbox[0] = Py::Int(face->bbox.xMin);
bbox[1] = Py::Int(face->bbox.yMin);
bbox[2] = Py::Int(face->bbox.xMax);
bbox[3] = Py::Int(face->bbox.yMax);
setattro("bbox", bbox);
setattro("ascender", Py::Int(face->ascender));
setattro("descender", Py::Int(face->descender));
setattro("height", Py::Int(face->height));
setattro("max_advance_width", Py::Int(face->max_advance_width));
setattro("max_advance_height", Py::Int(face->max_advance_height));
setattro("underline_position", Py::Int(face->underline_position));
setattro("underline_thickness", Py::Int(face->underline_thickness));
}
setattro("fname", args[0]);
_VERBOSE("FT2Font::FT2Font done");
}
FT2Font::~FT2Font()
{
_VERBOSE("FT2Font::~FT2Font");
FT_Done_Face(face);
for (size_t i = 0; i < glyphs.size(); i++)
{
FT_Done_Glyph(glyphs[i]);
}
}
int
FT2Font::setattro(const Py::String &name, const Py::Object &value)
{
_VERBOSE("FT2Font::setattr");
__dict__[name] = value;
return 1;
}
Py::Object
FT2Font::getattro(const Py::String &name)
{