matplotlib/src/ft2font_wrapper.cpp at v3.3.x · matplotlib/matplotlib · GitHub

Repository navigation

History

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

336

337

338

339

340

341

342

343

344

345

346

347

348

349

350

351

352

353

354

355

356

357

358

359

360

361

362

363

364

365

366

367

368

369

370

371

372

373

374

375

376

377

378

379

380

381

382

383

384

385

386

387

388

389

390

391

392

393

394

395

396

397

398

399

400

401

402

403

404

405

406

407

408

409

410

411

412

413

414

415

416

417

418

419

420

421

422

423

424

425

426

427

428

429

430

431

432

433

434

435

436

437

438

439

440

441

442

443

444

445

446

447

448

449

450

451

452

453

454

455

456

457

458

459

460

461

462

463

464

465

466

467

468

469

470

471

472

473

474

475

476

477

478

479

480

481

482

483

484

485

486

487

488

489

490

491

492

493

494

495

496

497

498

499

500

501

502

503

504

505

506

507

508

509

510

511

512

513

514

515

516

517

518

519

520

521

522

523

524

525

526

527

528

529

530

531

532

533

534

535

536

537

538

539

540

541

542

543

544

545

546

547

548

549

550

551

552

553

554

555

556

557

558

559

560

561

562

563

564

565

566

567

568

569

570

571

572

573

574

575

576

577

578

579

580

581

582

583

584

585

586

587

588

589

590

591

592

593

594

595

596

597

598

599

600

601

602

603

604

605

606

607

608

609

610

611

612

613

614

615

616

617

618

619

620

621

622

623

624

625

626

627

628

629

630

631

632

633

634

635

636

637

638

639

640

641

642

643

644

645

646

647

648

649

650

651

652

653

654

655

656

657

658

659

660

661

662

663

664

665

666

667

668

669

670

671

672

673

674

675

676

677

678

679

680

681

682

683

684

685

686

687

688

689

690

691

692

693

694

695

696

697

698

699

700

701

702

703

704

705

706

707

708

709

710

711

712

713

714

715

716

717

718

719

720

721

722

723

724

725

726

727

728

729

730

731

732

733

734

735

736

737

738

739

740

741

742

743

744

745

746

747

748

749

750

751

752

753

754

755

756

757

758

759

760

761

762

763

764

765

766

767

768

769

770

771

772

773

774

775

776

777

778

779

780

781

782

783

784

785

786

787

788

789

790

791

792

793

794

795

796

797

798

799

800

801

802

803

804

805

806

807

808

809

810

811

812

813

814

815

816

817

818

819

820

821

822

823

824

825

826

827

828

829

830

831

832

833

834

835

836

837

838

839

840

841

842

843

844

845

846

847

848

849

850

851

852

853

854

855

856

857

858

859

860

861

862

863

864

865

866

867

868

869

870

871

872

873

874

875

876

877

878

879

880

881

882

883

884

885

886

887

888

889

890

891

892

893

894

895

896

897

898

899

900

901

902

903

904

905

906

907

908

909

910

911

912

913

914

915

916

917

918

919

920

921

922

923

924

925

926

927

928

929

930

931

932

933

934

935

936

937

938

939

940

941

942

943

944

945

946

947

948

949

950

951

952

953

954

955

956

957

958

959

960

961

962

963

964

965

966

967

968

969

970

971

972

973

974

975

976

977

978

979

980

981

982

983

984

985

986

987

988

989

990

991

992

993

994

995

996

997

998

999

1000

#include "mplutils.h"

#include "ft2font.h"

#include "py_converters.h"

#include "py_exceptions.h"

#include "numpy_cpp.h"

// From Python

#include <structmember.h>

#define STRINGIFY(s) XSTRINGIFY(s)

#define XSTRINGIFY(s) #s

static PyObject *convert_xys_to_array(std::vector<double> &xys)

{

npy_intp dims[] = {(npy_intp)xys.size() / 2, 2 };

if (dims[0] > 0) {

return PyArray_SimpleNewFromData(2, dims, NPY_DOUBLE, &xys[0]);

} else {

return PyArray_SimpleNew(2, dims, NPY_DOUBLE);

}

/**********************************************************************

* FT2Image

* */

typedef struct

{

PyObject_HEAD

FT2Image *x;

Py_ssize_t shape[2];

Py_ssize_t strides[2];

Py_ssize_t suboffsets[2];

} PyFT2Image;

static PyObject *PyFT2Image_new(PyTypeObject *type, PyObject *args, PyObject *kwds)

{

PyFT2Image *self;

self = (PyFT2Image *)type->tp_alloc(type, 0);

self->x = NULL;

return (PyObject *)self;

}

static int PyFT2Image_init(PyFT2Image *self, PyObject *args, PyObject *kwds)

{

double width;

double height;

if (!PyArg_ParseTuple(args, "dd:FT2Image", &width, &height)) {

return -1;

}

CALL_CPP_INIT("FT2Image", (self->x = new FT2Image(width, height)));

return 0;

}

static void PyFT2Image_dealloc(PyFT2Image *self)

{

delete self->x;

Py_TYPE(self)->tp_free((PyObject *)self);

}

const char *PyFT2Image_draw_rect__doc__ =

"draw_rect(x0, y0, x1, y1)\n"

"\n"

"Draw a rect to the image.\n"

"\n";

static PyObject *PyFT2Image_draw_rect(PyFT2Image *self, PyObject *args, PyObject *kwds)

{

double x0, y0, x1, y1;

if (!PyArg_ParseTuple(args, "dddd:draw_rect", &x0, &y0, &x1, &y1)) {

return NULL;

}

CALL_CPP("draw_rect", (self->x->draw_rect(x0, y0, x1, y1)));

Py_RETURN_NONE;

}

const char *PyFT2Image_draw_rect_filled__doc__ =

"draw_rect_filled(x0, y0, x1, y1)\n"

"\n"

"Draw a filled rect to the image.\n"

"\n";

static PyObject *PyFT2Image_draw_rect_filled(PyFT2Image *self, PyObject *args, PyObject *kwds)

{

double x0, y0, x1, y1;

if (!PyArg_ParseTuple(args, "dddd:draw_rect_filled", &x0, &y0, &x1, &y1)) {

return NULL;

}

CALL_CPP("draw_rect_filled", (self->x->draw_rect_filled(x0, y0, x1, y1)));

Py_RETURN_NONE;

}

const char *PyFT2Image_as_str__doc__ =

"s = image.as_str()\n"

"\n"

"[*Deprecated*]\n"

"Return the image buffer as a string\n"

"\n";

static PyObject *PyFT2Image_as_str(PyFT2Image *self, PyObject *args, PyObject *kwds)

{

if (PyErr_WarnEx(PyExc_FutureWarning,

"FT2Image.as_str is deprecated since Matplotlib 3.2 and "

"will be removed in Matplotlib 3.4; convert the FT2Image "

"to a NumPy array with np.asarray instead.",

1)) {

return NULL;

}

return PyBytes_FromStringAndSize((const char *)self->x->get_buffer(),

self->x->get_width() * self->x->get_height());

}

const char *PyFT2Image_as_rgba_str__doc__ =

"s = image.as_rgba_str()\n"

"\n"

"[*Deprecated*]\n"

"Return the image buffer as a RGBA string\n"

"\n";

static PyObject *PyFT2Image_as_rgba_str(PyFT2Image *self, PyObject *args, PyObject *kwds)

{

if (PyErr_WarnEx(PyExc_FutureWarning,

"FT2Image.as_rgba_str is deprecated since Matplotlib 3.2 and "

"will be removed in Matplotlib 3.4; convert the FT2Image "

"to a NumPy array with np.asarray instead.",

1)) {

return NULL;

}

npy_intp dims[] = {(npy_intp)self->x->get_height(), (npy_intp)self->x->get_width(), 4 };

numpy::array_view<unsigned char, 3> result(dims);

unsigned char *src = self->x->get_buffer();

unsigned char *end = src + (self->x->get_width() * self->x->get_height());

unsigned char *dst = result.data();

while (src != end) {

*dst++ = 0;

*dst++ = *src++;

}

return result.pyobj();

}

const char *PyFT2Image_as_array__doc__ =

"x = image.as_array()\n"

"\n"

"[*Deprecated*]\n"

"Return the image buffer as a width x height numpy array of ubyte \n"

"\n";

static PyObject *PyFT2Image_as_array(PyFT2Image *self, PyObject *args, PyObject *kwds)

{

if (PyErr_WarnEx(PyExc_FutureWarning,

"FT2Image.as_array is deprecated since Matplotlib 3.2 and "

"will be removed in Matplotlib 3.4; convert the FT2Image "

"to a NumPy array with np.asarray instead.",

1)) {

return NULL;

}

npy_intp dims[] = {(npy_intp)self->x->get_height(), (npy_intp)self->x->get_width() };

return PyArray_SimpleNewFromData(2, dims, NPY_UBYTE, self->x->get_buffer());

}

static PyObject *PyFT2Image_get_width(PyFT2Image *self, PyObject *args, PyObject *kwds)

{

if (PyErr_WarnEx(PyExc_FutureWarning,

"FT2Image.get_width is deprecated since Matplotlib 3.2 and "

"will be removed in Matplotlib 3.4; convert the FT2Image "

"to a NumPy array with np.asarray instead.",

1)) {

return NULL;

}

return PyLong_FromLong(self->x->get_width());

}

static PyObject *PyFT2Image_get_height(PyFT2Image *self, PyObject *args, PyObject *kwds)

{

if (PyErr_WarnEx(PyExc_FutureWarning,

"FT2Image.get_height is deprecated since Matplotlib 3.2 and "

"will be removed in Matplotlib 3.4; convert the FT2Image "

"to a NumPy array with np.asarray instead.",

1)) {

return NULL;

}

return PyLong_FromLong(self->x->get_height());

}

static int PyFT2Image_get_buffer(PyFT2Image *self, Py_buffer *buf, int flags)

{

FT2Image *im = self->x;

Py_INCREF(self);

buf->obj = (PyObject *)self;

buf->buf = im->get_buffer();

buf->len = im->get_width() * im->get_height();

buf->readonly = 0;

buf->format = (char *)"B";

buf->ndim = 2;

self->shape[0] = im->get_height();

self->shape[1] = im->get_width();

buf->shape = self->shape;

self->strides[0] = im->get_width();

self->strides[1] = 1;

buf->strides = self->strides;

buf->suboffsets = NULL;

buf->itemsize = 1;

buf->internal = NULL;

return 1;

}

static PyTypeObject PyFT2ImageType;

static PyTypeObject *PyFT2Image_init_type(PyObject *m, PyTypeObject *type)

{

static PyMethodDef methods[] = {

{"draw_rect", (PyCFunction)PyFT2Image_draw_rect, METH_VARARGS, PyFT2Image_draw_rect__doc__},

{"draw_rect_filled", (PyCFunction)PyFT2Image_draw_rect_filled, METH_VARARGS, PyFT2Image_draw_rect_filled__doc__},

{"as_str", (PyCFunction)PyFT2Image_as_str, METH_NOARGS, PyFT2Image_as_str__doc__},

{"as_rgba_str", (PyCFunction)PyFT2Image_as_rgba_str, METH_NOARGS, PyFT2Image_as_rgba_str__doc__},

{"as_array", (PyCFunction)PyFT2Image_as_array, METH_NOARGS, PyFT2Image_as_array__doc__},

{"get_width", (PyCFunction)PyFT2Image_get_width, METH_NOARGS, NULL},

{"get_height", (PyCFunction)PyFT2Image_get_height, METH_NOARGS, NULL},

{NULL}

};

static PyBufferProcs buffer_procs;

memset(&buffer_procs, 0, sizeof(PyBufferProcs));

buffer_procs.bf_getbuffer = (getbufferproc)PyFT2Image_get_buffer;

memset(type, 0, sizeof(PyTypeObject));

type->tp_name = "matplotlib.ft2font.FT2Image";

type->tp_basicsize = sizeof(PyFT2Image);

type->tp_dealloc = (destructor)PyFT2Image_dealloc;

type->tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE;

type->tp_methods = methods;

type->tp_new = PyFT2Image_new;

type->tp_init = (initproc)PyFT2Image_init;

type->tp_as_buffer = &buffer_procs;

if (PyType_Ready(type) < 0) {

return NULL;

}

if (PyModule_AddObject(m, "FT2Image", (PyObject *)type)) {

return NULL;

}

return type;

}

/**********************************************************************

* Glyph

* */

typedef struct

{

PyObject_HEAD

size_t glyphInd;

long width;

long height;

long horiBearingX;

long horiBearingY;

long horiAdvance;

long linearHoriAdvance;

long vertBearingX;

long vertBearingY;

long vertAdvance;

FT_BBox bbox;

} PyGlyph;

static PyTypeObject PyGlyphType;

static PyObject *

PyGlyph_new(const FT_Face &face, const FT_Glyph &glyph, size_t ind, long hinting_factor)

{

PyGlyph *self;

self = (PyGlyph *)PyGlyphType.tp_alloc(&PyGlyphType, 0);

self->glyphInd = ind;

FT_Glyph_Get_CBox(glyph, ft_glyph_bbox_subpixels, &self->bbox);

self->width = face->glyph->metrics.width / hinting_factor;

self->height = face->glyph->metrics.height;

self->horiBearingX = face->glyph->metrics.horiBearingX / hinting_factor;

self->horiBearingY = face->glyph->metrics.horiBearingY;

self->horiAdvance = face->glyph->metrics.horiAdvance;

self->linearHoriAdvance = face->glyph->linearHoriAdvance / hinting_factor;

self->vertBearingX = face->glyph->metrics.vertBearingX;

self->vertBearingY = face->glyph->metrics.vertBearingY;

self->vertAdvance = face->glyph->metrics.vertAdvance;

return (PyObject *)self;

}

static void PyGlyph_dealloc(PyGlyph *self)

{

Py_TYPE(self)->tp_free((PyObject *)self);

}

static PyObject *PyGlyph_get_bbox(PyGlyph *self, void *closure)

{

return Py_BuildValue(

"llll", self->bbox.xMin, self->bbox.yMin, self->bbox.xMax, self->bbox.yMax);

}

static PyTypeObject *PyGlyph_init_type(PyObject *m, PyTypeObject *type)

{

static PyMemberDef members[] = {

{(char *)"width", T_LONG, offsetof(PyGlyph, width), READONLY, (char *)""},

{(char *)"height", T_LONG, offsetof(PyGlyph, height), READONLY, (char *)""},

{(char *)"horiBearingX", T_LONG, offsetof(PyGlyph, horiBearingX), READONLY, (char *)""},

{(char *)"horiBearingY", T_LONG, offsetof(PyGlyph, horiBearingY), READONLY, (char *)""},

{(char *)"horiAdvance", T_LONG, offsetof(PyGlyph, horiAdvance), READONLY, (char *)""},

{(char *)"linearHoriAdvance", T_LONG, offsetof(PyGlyph, linearHoriAdvance), READONLY, (char *)""},

{(char *)"vertBearingX", T_LONG, offsetof(PyGlyph, vertBearingX), READONLY, (char *)""},

{(char *)"vertBearingY", T_LONG, offsetof(PyGlyph, vertBearingY), READONLY, (char *)""},

{(char *)"vertAdvance", T_LONG, offsetof(PyGlyph, vertAdvance), READONLY, (char *)""},

{NULL}

};

static PyGetSetDef getset[] = {

{(char *)"bbox", (getter)PyGlyph_get_bbox, NULL, NULL, NULL},

{NULL}

};

memset(type, 0, sizeof(PyTypeObject));

type->tp_name = "matplotlib.ft2font.Glyph";

type->tp_basicsize = sizeof(PyGlyph);

type->tp_dealloc = (destructor)PyGlyph_dealloc;

type->tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE;

type->tp_members = members;

type->tp_getset = getset;

if (PyType_Ready(type) < 0) {

return NULL;

}

/* Don't need to add to module, since you can't create glyphs

directly from Python */

return type;

}

/**********************************************************************

* FT2Font

* */

typedef struct

{

PyObject_HEAD

FT2Font *x;

PyObject *fname;

PyObject *py_file;

FT_StreamRec stream;

Py_ssize_t shape[2];

Py_ssize_t strides[2];

Py_ssize_t suboffsets[2];

} PyFT2Font;

static unsigned long read_from_file_callback(FT_Stream stream,

unsigned long offset,

unsigned char *buffer,

unsigned long count)

{

PyObject *py_file = ((PyFT2Font *)stream->descriptor.pointer)->py_file;

PyObject *seek_result = NULL, *read_result = NULL;

Py_ssize_t n_read = 0;

if (!(seek_result = PyObject_CallMethod(py_file, "seek", "k", offset))

|| !(read_result = PyObject_CallMethod(py_file, "read", "k", count))) {

goto exit;

}

char *tmpbuf;

if (PyBytes_AsStringAndSize(read_result, &tmpbuf, &n_read) == -1) {

goto exit;

}

memcpy(buffer, tmpbuf, n_read);

exit:

Py_XDECREF(seek_result);

Py_XDECREF(read_result);

if (PyErr_Occurred()) {

PyErr_WriteUnraisable(py_file);

if (!count) {

return 1; // Non-zero signals error, when count == 0.

}

return n_read;

}

static void close_file_callback(FT_Stream stream)

{

PyFT2Font *self = (PyFT2Font *)stream->descriptor.pointer;

PyObject *close_result = NULL;

if (!(close_result = PyObject_CallMethod(self->py_file, "close", ""))) {

goto exit;

}

exit:

Py_XDECREF(close_result);

Py_CLEAR(self->py_file);

if (PyErr_Occurred()) {

PyErr_WriteUnraisable((PyObject*)self);

}

static PyTypeObject PyFT2FontType;

static PyObject *PyFT2Font_new(PyTypeObject *type, PyObject *args, PyObject *kwds)

{

PyFT2Font *self;

self = (PyFT2Font *)type->tp_alloc(type, 0);

self->x = NULL;

self->fname = NULL;

self->py_file = NULL;

memset(&self->stream, 0, sizeof(FT_StreamRec));

return (PyObject *)self;

}

const char *PyFT2Font_init__doc__ =

"FT2Font(ttffile)\n"

"\n"

"Create a new FT2Font object\n"

"The following global font attributes are defined:\n"

" num_faces number of faces in file\n"

" face_flags face flags (int type); see the ft2font constants\n"

" style_flags style flags (int type); see the ft2font constants\n"

" num_glyphs number of glyphs in the face\n"

" family_name face family name\n"

" style_name face style name\n"

" num_fixed_sizes number of bitmap in the face\n"

" scalable face is scalable\n"

"\n"

"The following are available, if scalable is true:\n"

" bbox face global bounding box (xmin, ymin, xmax, ymax)\n"

" units_per_EM number of font units covered by the EM\n"

" ascender ascender in 26.6 units\n"

" descender descender in 26.6 units\n"

" height height in 26.6 units; used to compute a default\n"

" line spacing (baseline-to-baseline distance)\n"

" max_advance_width maximum horizontal cursor advance for all glyphs\n"

" max_advance_height same for vertical layout\n"

" underline_position vertical position of the underline bar\n"

" underline_thickness vertical thickness of the underline\n"

" postscript_name PostScript name of the font\n";

static int PyFT2Font_init(PyFT2Font *self, PyObject *args, PyObject *kwds)

{

PyObject *filename = NULL, *open = NULL, *data = NULL;

FT_Open_Args open_args;

long hinting_factor = 8;

int kerning_factor = 0;

const char *names[] = { "filename", "hinting_factor", "_kerning_factor", NULL };

if (!PyArg_ParseTupleAndKeywords(

args, kwds, "O|l$i:FT2Font", (char **)names, &filename,

&hinting_factor, &kerning_factor)) {

return -1;

}

self->stream.base = NULL;

self->stream.size = 0x7fffffff; // Unknown size.

self->stream.pos = 0;

self->stream.descriptor.pointer = self;

self->stream.read = &read_from_file_callback;

memset((void *)&open_args, 0, sizeof(FT_Open_Args));

open_args.flags = FT_OPEN_STREAM;

open_args.stream = &self->stream;

if (PyBytes_Check(filename) || PyUnicode_Check(filename)) {

if (!(open = PyDict_GetItemString(PyEval_GetBuiltins(), "open")) // Borrowed reference.

|| !(self->py_file = PyObject_CallFunction(open, "Os", filename, "rb"))) {

goto exit;

}

self->stream.close = &close_file_callback;

} else if (!PyObject_HasAttrString(filename, "read")

|| !(data = PyObject_CallMethod(filename, "read", "i", 0))

|| !PyBytes_Check(data)) {

PyErr_SetString(PyExc_TypeError,

"First argument must be a path or binary-mode file object");

Py_CLEAR(data);

goto exit;

} else {

self->py_file = filename;

self->stream.close = NULL;

Py_INCREF(filename);

}

Py_CLEAR(data);

CALL_CPP_FULL(

"FT2Font", (self->x = new FT2Font(open_args, hinting_factor)),

Py_CLEAR(self->py_file), -1);

CALL_CPP_INIT("FT2Font->set_kerning_factor", (self->x->set_kerning_factor(kerning_factor)));

Py_INCREF(filename);

self->fname = filename;

exit:

return PyErr_Occurred() ? -1 : 0;

}

static void PyFT2Font_dealloc(PyFT2Font *self)

{

delete self->x;

Py_XDECREF(self->py_file);

Py_XDECREF(self->fname);

Py_TYPE(self)->tp_free((PyObject *)self);

}

const char *PyFT2Font_clear__doc__ =

"clear()\n"

"\n"

"Clear all the glyphs, reset for a new set_text";

static PyObject *PyFT2Font_clear(PyFT2Font *self, PyObject *args, PyObject *kwds)

{

CALL_CPP("clear", (self->x->clear()));

Py_RETURN_NONE;

}

const char *PyFT2Font_set_size__doc__ =

"set_size(ptsize, dpi)\n"

"\n"

"Set the point size and dpi of the text.\n";

static PyObject *PyFT2Font_set_size(PyFT2Font *self, PyObject *args, PyObject *kwds)

{

double ptsize;

double dpi;

if (!PyArg_ParseTuple(args, "dd:set_size", &ptsize, &dpi)) {

return NULL;

}

CALL_CPP("set_size", (self->x->set_size(ptsize, dpi)));

Py_RETURN_NONE;

}

const char *PyFT2Font_set_charmap__doc__ =

"set_charmap(i)\n"

"\n"

"Make the i-th charmap current\n";

static PyObject *PyFT2Font_set_charmap(PyFT2Font *self, PyObject *args, PyObject *kwds)

{

int i;

if (!PyArg_ParseTuple(args, "i:set_charmap", &i)) {

return NULL;

}

CALL_CPP("set_charmap", (self->x->set_charmap(i)));

Py_RETURN_NONE;

}

const char *PyFT2Font_select_charmap__doc__ =

"select_charmap(i)\n"

"\n"

"select charmap i where i is one of the FT_Encoding number\n";

static PyObject *PyFT2Font_select_charmap(PyFT2Font *self, PyObject *args, PyObject *kwds)

{

unsigned long i;

if (!PyArg_ParseTuple(args, "k:select_charmap", &i)) {

return NULL;

}

CALL_CPP("select_charmap", self->x->select_charmap(i));

Py_RETURN_NONE;

}

const char *PyFT2Font_get_kerning__doc__ =

"dx = get_kerning(left, right, mode)\n"

"\n"

"Get the kerning between left char and right glyph indices\n"

"mode is a kerning mode constant\n"

" KERNING_DEFAULT - Return scaled and grid-fitted kerning distances\n"

" KERNING_UNFITTED - Return scaled but un-grid-fitted kerning distances\n"

" KERNING_UNSCALED - Return the kerning vector in original font units\n";

static PyObject *PyFT2Font_get_kerning(PyFT2Font *self, PyObject *args, PyObject *kwds)

{

FT_UInt left, right, mode;

int result;

if (!PyArg_ParseTuple(args, "III:get_kerning", &left, &right, &mode)) {

return NULL;

}

CALL_CPP("get_kerning", (result = self->x->get_kerning(left, right, mode)));

return PyLong_FromLong(result);

}

const char *PyFT2Font_set_text__doc__ =

"set_text(s, angle)\n"

"\n"

"Set the text string and angle.\n"

"You must call this before draw_glyphs_to_bitmap\n"

"A sequence of x,y positions is returned";

static PyObject *PyFT2Font_set_text(PyFT2Font *self, PyObject *args, PyObject *kwds)

{

PyObject *textobj;

double angle = 0.0;

FT_Int32 flags = FT_LOAD_FORCE_AUTOHINT;

std::vector<double> xys;

const char *names[] = { "string", "angle", "flags", NULL };

/* This makes a technically incorrect assumption that FT_Int32 is

int. In theory it can also be long, if the size of int is less

than 32 bits. This is very unlikely on modern platforms. */

if (!PyArg_ParseTupleAndKeywords(

args, kwds, "O|di:set_text", (char **)names, &textobj, &angle, &flags)) {

return NULL;

}

std::vector<uint32_t> codepoints;

size_t size;

if (PyUnicode_Check(textobj)) {

size = PyUnicode_GET_LENGTH(textobj);

codepoints.resize(size);

#if defined(PYPY_VERSION) && (PYPY_VERSION_NUM < 0x07030200)

Py_UNICODE *unistr = PyUnicode_AsUnicode(textobj);

for (size_t i = 0; i < size; ++i) {

codepoints[i] = unistr[i];

}

#else

for (size_t i = 0; i < size; ++i) {

codepoints[i] = PyUnicode_ReadChar(textobj, i);

}

#endif

} else if (PyBytes_Check(textobj)) {

size = PyBytes_Size(textobj);

codepoints.resize(size);

char *bytestr = PyBytes_AsString(textobj);

for (size_t i = 0; i < size; ++i) {

codepoints[i] = bytestr[i];

}

} else {

PyErr_SetString(PyExc_TypeError, "String must be str or bytes");

return NULL;

}

uint32_t* codepoints_array = NULL;

if (size > 0) {

codepoints_array = &codepoints[0];

}

CALL_CPP("set_text", self->x->set_text(size, codepoints_array, angle, flags, xys));

return convert_xys_to_array(xys);

}

const char *PyFT2Font_get_num_glyphs__doc__ =

"get_num_glyphs()\n"

"\n"

"Return the number of loaded glyphs\n";

static PyObject *PyFT2Font_get_num_glyphs(PyFT2Font *self, PyObject *args, PyObject *kwds)

{

return PyLong_FromLong(self->x->get_num_glyphs());

}

const char *PyFT2Font_load_char__doc__ =

"load_char(charcode, flags=LOAD_FORCE_AUTOHINT)\n"

"\n"

"Load character with charcode in current fontfile and set glyph.\n"

"The flags argument can be a bitwise-or of the LOAD_XXX constants.\n"

"Return value is a Glyph object, with attributes\n"

" width # glyph width\n"

" height # glyph height\n"

" bbox # the glyph bbox (xmin, ymin, xmax, ymax)\n"

" horiBearingX # left side bearing in horizontal layouts\n"

" horiBearingY # top side bearing in horizontal layouts\n"

" horiAdvance # advance width for horizontal layout\n"

" vertBearingX # left side bearing in vertical layouts\n"

" vertBearingY # top side bearing in vertical layouts\n"

" vertAdvance # advance height for vertical layout\n";

static PyObject *PyFT2Font_load_char(PyFT2Font *self, PyObject *args, PyObject *kwds)

{

long charcode;

FT_Int32 flags = FT_LOAD_FORCE_AUTOHINT;

const char *names[] = { "charcode", "flags", NULL };

/* This makes a technically incorrect assumption that FT_Int32 is

int. In theory it can also be long, if the size of int is less

than 32 bits. This is very unlikely on modern platforms. */

if (!PyArg_ParseTupleAndKeywords(

args, kwds, "l|i:load_char", (char **)names, &charcode, &flags)) {

return NULL;

}

CALL_CPP("load_char", (self->x->load_char(charcode, flags)));

return PyGlyph_new(self->x->get_face(),

self->x->get_last_glyph(),

self->x->get_last_glyph_index(),

self->x->get_hinting_factor());

}

const char *PyFT2Font_load_glyph__doc__ =

"load_glyph(glyphindex, flags=LOAD_FORCE_AUTOHINT)\n"

"\n"

"Load character with glyphindex in current fontfile and set glyph.\n"

"The flags argument can be a bitwise-or of the LOAD_XXX constants.\n"

"Return value is a Glyph object, with attributes\n"

" width # glyph width\n"

" height # glyph height\n"

" bbox # the glyph bbox (xmin, ymin, xmax, ymax)\n"

" horiBearingX # left side bearing in horizontal layouts\n"

" horiBearingY # top side bearing in horizontal layouts\n"

" horiAdvance # advance width for horizontal layout\n"

" vertBearingX # left side bearing in vertical layouts\n"

" vertBearingY # top side bearing in vertical layouts\n"

" vertAdvance # advance height for vertical layout\n";

static PyObject *PyFT2Font_load_glyph(PyFT2Font *self, PyObject *args, PyObject *kwds)

{

FT_UInt glyph_index;

FT_Int32 flags = FT_LOAD_FORCE_AUTOHINT;

const char *names[] = { "glyph_index", "flags", NULL };

/* This makes a technically incorrect assumption that FT_Int32 is

int. In theory it can also be long, if the size of int is less

than 32 bits. This is very unlikely on modern platforms. */

if (!PyArg_ParseTupleAndKeywords(

args, kwds, "I|i:load_glyph", (char **)names, &glyph_index, &flags)) {

return NULL;

}

CALL_CPP("load_glyph", (self->x->load_glyph(glyph_index, flags)));

return PyGlyph_new(self->x->get_face(),

self->x->get_last_glyph(),

self->x->get_last_glyph_index(),

self->x->get_hinting_factor());

}

const char *PyFT2Font_get_width_height__doc__ =

"w, h = get_width_height()\n"

"\n"

"Get the width and height in 26.6 subpixels of the current string set by set_text\n"

"The rotation of the string is accounted for. To get width and height\n"

"in pixels, divide these values by 64\n";

static PyObject *PyFT2Font_get_width_height(PyFT2Font *self, PyObject *args, PyObject *kwds)

{

long width, height;

CALL_CPP("get_width_height", (self->x->get_width_height(&width, &height)));

return Py_BuildValue("ll", width, height);

}

const char *PyFT2Font_get_bitmap_offset__doc__ =

"x, y = get_bitmap_offset()\n"

"\n"

"Get the offset in 26.6 subpixels for the bitmap if ink hangs left or below (0, 0).\n"

"Since matplotlib only supports left-to-right text, y is always 0.\n";

static PyObject *PyFT2Font_get_bitmap_offset(PyFT2Font *self, PyObject *args, PyObject *kwds)

{

long x, y;

CALL_CPP("get_bitmap_offset", (self->x->get_bitmap_offset(&x, &y)));

return Py_BuildValue("ll", x, y);

}

const char *PyFT2Font_get_descent__doc__ =

"d = get_descent()\n"

"\n"

"Get the descent of the current string set by set_text in 26.6 subpixels.\n"

"The rotation of the string is accounted for. To get the descent\n"

"in pixels, divide this value by 64.\n";

static PyObject *PyFT2Font_get_descent(PyFT2Font *self, PyObject *args, PyObject *kwds)

{

long descent;

CALL_CPP("get_descent", (descent = self->x->get_descent()));

return PyLong_FromLong(descent);

}

const char *PyFT2Font_draw_glyphs_to_bitmap__doc__ =

"draw_glyphs_to_bitmap()\n"

"\n"

"Draw the glyphs that were loaded by set_text to the bitmap\n"

"The bitmap size will be automatically set to include the glyphs\n";

static PyObject *PyFT2Font_draw_glyphs_to_bitmap(PyFT2Font *self, PyObject *args, PyObject *kwds)

{

bool antialiased = true;

const char *names[] = { "antialiased", NULL };

if (!PyArg_ParseTupleAndKeywords(args, kwds, "|O&:draw_glyphs_to_bitmap",

(char **)names, &convert_bool, &antialiased)) {

return NULL;

}

CALL_CPP("draw_glyphs_to_bitmap", (self->x->draw_glyphs_to_bitmap(antialiased)));

Py_RETURN_NONE;

}

const char *PyFT2Font_get_xys__doc__ =

"get_xys()\n"

"\n"

"Get the xy locations of the current glyphs\n";

static PyObject *PyFT2Font_get_xys(PyFT2Font *self, PyObject *args, PyObject *kwds)

{

bool antialiased = true;

std::vector<double> xys;

const char *names[] = { "antialiased", NULL };

if (!PyArg_ParseTupleAndKeywords(args, kwds, "|O&:get_xys",

(char **)names, &convert_bool, &antialiased)) {

return NULL;

}

CALL_CPP("get_xys", (self->x->get_xys(antialiased, xys)));

return convert_xys_to_array(xys);

}

const char *PyFT2Font_draw_glyph_to_bitmap__doc__ =

"draw_glyph_to_bitmap(bitmap, x, y, glyph)\n"

"\n"

"Draw a single glyph to the bitmap at pixel locations x,y\n"

"Note it is your responsibility to set up the bitmap manually\n"

"with set_bitmap_size(w,h) before this call is made.\n"

"\n"

"If you want automatic layout, use set_text in combinations with\n"

"draw_glyphs_to_bitmap. This function is intended for people who\n"

"want to render individual glyphs at precise locations, eg, a\n"

"a glyph returned by load_char\n";

static PyObject *PyFT2Font_draw_glyph_to_bitmap(PyFT2Font *self, PyObject *args, PyObject *kwds)

{

PyFT2Image *image;

double xd, yd;

PyGlyph *glyph;

bool antialiased = true;

const char *names[] = { "image", "x", "y", "glyph", "antialiased", NULL };

if (!PyArg_ParseTupleAndKeywords(args,

kwds,

"O!ddO!|O&:draw_glyph_to_bitmap",

(char **)names,

&PyFT2ImageType,

&image,

&xd,

&yd,

&PyGlyphType,

&glyph,

&convert_bool,

&antialiased)) {

return NULL;

}

CALL_CPP("draw_glyph_to_bitmap",

self->x->draw_glyph_to_bitmap(*(image->x), xd, yd, glyph->glyphInd, antialiased));

Py_RETURN_NONE;

}

const char *PyFT2Font_get_glyph_name__doc__ =

"get_glyph_name(index)\n"

"\n"

"Retrieves the ASCII name of a given glyph in a face.\n"

"\n"

"Due to Matplotlib's internal design, for fonts that do not contain glyph \n"

"names (per FT_FACE_FLAG_GLYPH_NAMES), this returns a made-up name which \n"

"does *not* roundtrip through `.get_name_index`.\n";

static PyObject *PyFT2Font_get_glyph_name(PyFT2Font *self, PyObject *args, PyObject *kwds)

{

unsigned int glyph_number;

char buffer[128];

if (!PyArg_ParseTuple(args, "I:get_glyph_name", &glyph_number)) {

return NULL;

}

CALL_CPP("get_glyph_name", (self->x->get_glyph_name(glyph_number, buffer)));

return PyUnicode_FromString(buffer);

}

const char *PyFT2Font_get_charmap__doc__ =

"get_charmap()\n"

"\n"

"Returns a dictionary that maps the character codes of the selected charmap\n"

"(Unicode by default) to their corresponding glyph indices.\n";

static PyObject *PyFT2Font_get_charmap(PyFT2Font *self, PyObject *args, PyObject *kwds)

{

PyObject *charmap;

if (!(charmap = PyDict_New())) {

return NULL;

}

FT_UInt index;

FT_ULong code = FT_Get_First_Char(self->x->get_face(), &index);

while (index != 0) {

PyObject *key = NULL, *val = NULL;

bool error = (!(key = PyLong_FromLong(code))

|| !(val = PyLong_FromLong(index))

|| (PyDict_SetItem(charmap, key, val) == -1));

Py_XDECREF(key);

Py_XDECREF(val);

if (error) {

Py_DECREF(charmap);

return NULL;

}

code = FT_Get_Next_Char(self->x->get_face(), code, &index);

}

return charmap;

}

const char *PyFT2Font_get_char_index__doc__ =

"get_char_index()\n"

"\n"

"Given a character code, returns a glyph index.\n";

static PyObject *PyFT2Font_get_char_index(PyFT2Font *self, PyObject *args, PyObject *kwds)

{

FT_UInt index;

FT_ULong ccode;

if (!PyArg_ParseTuple(args, "k:get_char_index", &ccode)) {

return NULL;

}

index = FT_Get_Char_Index(self->x->get_face(), ccode);

return PyLong_FromLong(index);

}

const char *PyFT2Font_get_sfnt__doc__ =

"get_sfnt(name)\n"

"\n"

"Get all values from the SFNT names table. Result is a dictionary whose "

"key is the platform-ID, ISO-encoding-scheme, language-code, and "

"description.\n";

static PyObject *PyFT2Font_get_sfnt(PyFT2Font *self, PyObject *args, PyObject *kwds)

{

PyObject *names;

if (!(self->x->get_face()->face_flags & FT_FACE_FLAG_SFNT)) {

PyErr_SetString(PyExc_ValueError, "No SFNT name table");

return NULL;

}

size_t count = FT_Get_Sfnt_Name_Count(self->x->get_face());

names = PyDict_New();

if (names == NULL) {

return NULL;

}

for (FT_UInt j = 0; j < count; ++j) {

FT_SfntName sfnt;

FT_Error error = FT_Get_Sfnt_Name(self->x->get_face(), j, &sfnt);

if (error) {

Py_DECREF(names);

PyErr_SetString(PyExc_ValueError, "Could not get SFNT name");

return NULL;

}

PyObject *key = Py_BuildValue(

"HHHH", sfnt.platform_id, sfnt.encoding_id, sfnt.language_id, sfnt.name_id);

if (key == NULL) {

Py_DECREF(names);

return NULL;

}

PyObject *val = PyBytes_FromStringAndSize((const char *)sfnt.string, sfnt.string_len);

if (val == NULL) {

Py_DECREF(key);

View remainder of file in raw view

matplotlib/src/ft2font_wrapper.cpp at v3.3.x · matplotlib/matplotlib · GitHub

Repository navigation

Expand file tree

Breadcrumbs

ft2font_wrapper.cpp

Latest commit

History

Breadcrumbs

ft2font_wrapper.cpp

File metadata and controls