src/libnrtype/Layout-TNG-Output.cpp

   1 /*
   2  * Inkscape::Text::Layout - text layout engine output functions
   3  *
   4  * Authors:
   5  *   Richard Hughes <cyreve@users.sf.net>
   6  *
   7  * Copyright (C) 2005 Richard Hughes
   8  *
   9  * Released under GNU GPL, read the file 'COPYING' for more information
  10  */
  11 #include <glib/gmem.h>
  12 #include "Layout-TNG.h"
  13 #include "display/nr-arena-glyphs.h"
  14 #include "style.h"
  15 #include "print.h"
  16 #include "extension/print.h"
  17 #include "livarot/Path.h"
  18 #include "libnr/nr-scale-matrix-ops.h"
  19 #include "font-instance.h"
  20 #include "svg/svg-length.h"
  21
  22 namespace Inkscape {
  23 namespace Text {
  24
  25 void Layout::_clearOutputObjects()
  26 {
  27     _paragraphs.clear();
  28     _lines.clear();
  29     _chunks.clear();
  30     for (std::vector<Span>::iterator it_span = _spans.begin() ; it_span != _spans.end() ; it_span++)
  31         if (it_span->font) it_span->font->Unref();
  32     _spans.clear();
  33     _characters.clear();
  34     _glyphs.clear();
  35     _path_fitted = NULL;
  36 }
  37
  38 void Layout::LineHeight::max(LineHeight const &other)
  39 {
  40     if (other.ascent > ascent)  ascent  = other.ascent;
  41     if (other.descent > descent) descent = other.descent;
  42     if (other.leading > leading) leading = other.leading;
  43 }
  44
  45 void Layout::_getGlyphTransformMatrix(int glyph_index, NRMatrix *matrix) const
  46 {
  47     Span const &span = _glyphs[glyph_index].span(this);
  48     double sin_rotation = sin(_glyphs[glyph_index].rotation);
  49     double cos_rotation = cos(_glyphs[glyph_index].rotation);
  50     (*matrix)[0] = span.font_size * cos_rotation;
  51     (*matrix)[1] = span.font_size * sin_rotation;
  52     (*matrix)[2] = span.font_size * sin_rotation;
  53     (*matrix)[3] = -span.font_size * cos_rotation;
  54     if (span.block_progression == LEFT_TO_RIGHT || span.block_progression == RIGHT_TO_LEFT) {
  55         (*matrix)[4] = _lines[_chunks[span.in_chunk].in_line].baseline_y + _glyphs[glyph_index].y;
  56         (*matrix)[5] = _chunks[span.in_chunk].left_x + _glyphs[glyph_index].x;
  57     } else {
  58         (*matrix)[4] = _chunks[span.in_chunk].left_x + _glyphs[glyph_index].x;
  59         (*matrix)[5] = _lines[_chunks[span.in_chunk].in_line].baseline_y + _glyphs[glyph_index].y;
  60     }
  61 }
  62
  63 void Layout::show(NRArenaGroup *in_arena, NRRect const *paintbox) const
  64 {
  65     int glyph_index = 0;
  66     for (unsigned span_index = 0 ; span_index < _spans.size() ; span_index++) {
  67         if (_input_stream[_spans[span_index].in_input_stream_item]->Type() != TEXT_SOURCE) continue;
  68         InputStreamTextSource const *text_source = static_cast<InputStreamTextSource const *>(_input_stream[_spans[span_index].in_input_stream_item]);
  69         NRArenaGlyphsGroup *nr_group = NRArenaGlyphsGroup::create(in_arena->arena);
  70         nr_arena_item_add_child(in_arena, nr_group, NULL);
  71         nr_arena_item_unref(nr_group);
  72
  73         nr_arena_glyphs_group_set_style(nr_group, text_source->style);
  74         while (glyph_index < (int)_glyphs.size() && _characters[_glyphs[glyph_index].in_character].in_span == span_index) {
  75             if (_characters[_glyphs[glyph_index].in_character].in_glyph != -1) {
  76                 NRMatrix glyph_matrix;
  77                 _getGlyphTransformMatrix(glyph_index, &glyph_matrix);
  78                 nr_arena_glyphs_group_add_component(nr_group, _spans[span_index].font, _glyphs[glyph_index].glyph, &glyph_matrix);
  79             }
  80             glyph_index++;
  81         }
  82         nr_arena_glyphs_group_set_paintbox(NR_ARENA_GLYPHS_GROUP(nr_group), paintbox);
  83     }
  84     nr_arena_item_request_update(NR_ARENA_ITEM(in_arena), NR_ARENA_ITEM_STATE_ALL, FALSE);
  85 }
  86
  87 void Layout::getBoundingBox(NRRect *bounding_box, NR::Matrix const &transform, int start, int length) const
  88 {
  89     for (unsigned glyph_index = 0 ; glyph_index < _glyphs.size() ; glyph_index++) {
  90         if (_characters[_glyphs[glyph_index].in_character].in_glyph == -1) continue;
  91         if (start != -1 && (int) _glyphs[glyph_index].in_character < start) continue;
  92         if (length != -1) {
  93             if (start == -1)
  94                 start = 0;
  95             if ((int) _glyphs[glyph_index].in_character > start + length) continue;
  96         }
  97         // this could be faster
  98         NRMatrix glyph_matrix;
  99         _getGlyphTransformMatrix(glyph_index, &glyph_matrix);
 100         NR::Matrix total_transform = glyph_matrix;
 101         total_transform *= transform;
 102         NR::Rect glyph_rect = _glyphs[glyph_index].span(this).font->BBox(_glyphs[glyph_index].glyph);
 103         NR::Point bmi = glyph_rect.min(), bma = glyph_rect.max();
 104         NR::Point tlp(bmi[0],bmi[1]), trp(bma[0],bmi[1]), blp(bmi[0],bma[1]), brp(bma[0],bma[1]);
 105         tlp *= total_transform;
 106         trp *= total_transform;
 107         blp *= total_transform;
 108         brp *= total_transform;
 109         glyph_rect = NR::Rect(tlp,trp);
 110         glyph_rect.expandTo(blp);
 111         glyph_rect.expandTo(brp);
 112         if ( (glyph_rect.min())[0] < bounding_box->x0 ) bounding_box->x0=(glyph_rect.min())[0];
 113         if ( (glyph_rect.max())[0] > bounding_box->x1 ) bounding_box->x1=(glyph_rect.max())[0];
 114         if ( (glyph_rect.min())[1] < bounding_box->y0 ) bounding_box->y0=(glyph_rect.min())[1];
 115         if ( (glyph_rect.max())[1] > bounding_box->y1 ) bounding_box->y1=(glyph_rect.max())[1];
 116     }
 117 }
 118
 119 void Layout::print(SPPrintContext *ctx,
 120                    NRRect const *pbox, NRRect const *dbox, NRRect const *bbox,
 121                    NRMatrix const &ctm) const
 122 {
 123     if (_input_stream.empty()) return;
 124
 125     Direction block_progression = _blockProgression();
 126     bool text_to_path = ctx->module->textToPath();
 127     for (unsigned glyph_index = 0 ; glyph_index < _glyphs.size() ; ) {
 128         if (_characters[_glyphs[glyph_index].in_character].in_glyph == -1) {
 129             // invisible glyphs
 130             unsigned same_character = _glyphs[glyph_index].in_character;
 131             while (_glyphs[glyph_index].in_character == same_character)
 132                 glyph_index++;
 133             continue;
 134         }
 135         NRMatrix glyph_matrix;
 136         Span const &span = _spans[_characters[_glyphs[glyph_index].in_character].in_span];
 137         InputStreamTextSource const *text_source = static_cast<InputStreamTextSource const *>(_input_stream[span.in_input_stream_item]);
 138         if (text_to_path || _path_fitted) {
 139             NRBPath bpath;
 140             bpath.path = (NArtBpath*)span.font->ArtBPath(_glyphs[glyph_index].glyph);
 141             if (bpath.path) {
 142                 NRBPath abp;
 143                 _getGlyphTransformMatrix(glyph_index, &glyph_matrix);
 144                 abp.path = nr_artpath_affine(bpath.path, glyph_matrix);
 145                 if (text_source->style->fill.type != SP_PAINT_TYPE_NONE)
 146                     sp_print_fill(ctx, &abp, &ctm, text_source->style, pbox, dbox, bbox);
 147                 if (text_source->style->stroke.type != SP_PAINT_TYPE_NONE)
 148                     sp_print_stroke(ctx, &abp, &ctm, text_source->style, pbox, dbox, bbox);
 149                 g_free(abp.path);
 150             }
 151             glyph_index++;
 152         } else {
 153             NR::Point g_pos(0,0);    // all strings are output at (0,0) because we do the translation using the matrix
 154             glyph_matrix = NR::Matrix(NR::scale(1.0, -1.0) * NR::Matrix(NR::rotate(_glyphs[glyph_index].rotation)));
 155             if (block_progression == LEFT_TO_RIGHT || block_progression == RIGHT_TO_LEFT) {
 156                 glyph_matrix.c[4] = span.line(this).baseline_y + span.baseline_shift;
 157                 // since we're outputting character codes, not glyphs, we want the character x
 158                 glyph_matrix.c[5] = span.chunk(this).left_x + span.x_start + _characters[_glyphs[glyph_index].in_character].x;
 159             } else {
 160                 glyph_matrix.c[4] = span.chunk(this).left_x + span.x_start + _characters[_glyphs[glyph_index].in_character].x;
 161                 glyph_matrix.c[5] = span.line(this).baseline_y + span.baseline_shift;
 162             }
 163             Glib::ustring::const_iterator span_iter = span.input_stream_first_character;
 164             unsigned char_index = _glyphs[glyph_index].in_character;
 165             unsigned original_span = _characters[char_index].in_span;
 166             while (char_index && _characters[char_index - 1].in_span == original_span) {
 167                 char_index--;
 168                 span_iter++;
 169             }
 170
 171             // try to output as many characters as possible in one go by detecting kerning and stopping when we encounter it
 172             Glib::ustring span_string;
 173             double char_x = _characters[_glyphs[glyph_index].in_character].x;
 174             unsigned this_span_index = _characters[_glyphs[glyph_index].in_character].in_span;
 175             do {
 176                 span_string += *span_iter;
 177                 span_iter++;
 178
 179                 unsigned same_character = _glyphs[glyph_index].in_character;
 180                 while (glyph_index < _glyphs.size() && _glyphs[glyph_index].in_character == same_character) {
 181                     char_x += _glyphs[glyph_index].width;
 182                     glyph_index++;
 183                 }
 184             } while (glyph_index < _glyphs.size()
 185                      && _path_fitted == NULL
 186                      && _characters[_glyphs[glyph_index].in_character].in_span == this_span_index
 187                      && fabs(char_x - _characters[_glyphs[glyph_index].in_character].x) < 1e-5);
 188             sp_print_bind(ctx, glyph_matrix, 1.0);
 189             sp_print_text(ctx, span_string.c_str(), g_pos, text_source->style);
 190             sp_print_release(ctx);
 191         }
 192     }
 193 }
 194
 195 // these functions are for dumpAsText() only. No need to translate
 196 static char const *direction_to_text(Layout::Direction d)
 197 {
 198     switch (d) {
 199         case Layout::LEFT_TO_RIGHT: return "ltr";
 200         case Layout::RIGHT_TO_LEFT: return "rtl";
 201         case Layout::TOP_TO_BOTTOM: return "ttb";
 202         case Layout::BOTTOM_TO_TOP: return "btt";
 203     }
 204     return "???";
 205 }
 206
 207 static char const *style_to_text(PangoStyle s)
 208 {
 209     switch (s) {
 210         case PANGO_STYLE_NORMAL: return "upright";
 211         case PANGO_STYLE_ITALIC: return "italic";
 212         case PANGO_STYLE_OBLIQUE: return "oblique";
 213     }
 214     return "???";
 215 }
 216
 217 static char const *weight_to_text(PangoWeight w)
 218 {
 219     switch (w) {
 220         case PANGO_WEIGHT_ULTRALIGHT: return "ultralight";
 221         case PANGO_WEIGHT_LIGHT     : return "light";
 222 #ifdef PANGO_WEIGHT_SEMIBOLD
 223         case PANGO_WEIGHT_SEMIBOLD  : return "semibold";
 224 #endif
 225         case PANGO_WEIGHT_NORMAL    : return "normalweight";
 226         case PANGO_WEIGHT_BOLD      : return "bold";
 227         case PANGO_WEIGHT_ULTRABOLD : return "ultrabold";
 228         case PANGO_WEIGHT_HEAVY     : return "heavy";
 229     }
 230     return "???";
 231 }
 232
 233 Glib::ustring Layout::dumpAsText() const
 234 {
 235     Glib::ustring result;
 236
 237     for (unsigned span_index = 0 ; span_index < _spans.size() ; span_index++) {
 238         char line[256];
 239         snprintf(line, sizeof(line), "==== span %d\n", span_index);
 240         result += line;
 241         snprintf(line, sizeof(line), "  in para %d (direction=%s)\n", _lines[_chunks[_spans[span_index].in_chunk].in_line].in_paragraph,
 242                  direction_to_text(_paragraphs[_lines[_chunks[_spans[span_index].in_chunk].in_line].in_paragraph].base_direction));
 243         result += line;
 244         snprintf(line, sizeof(line), "  in source %d (type=%d, cookie=%p)\n", _spans[span_index].in_input_stream_item,
 245                  _input_stream[_spans[span_index].in_input_stream_item]->Type(),
 246                  _input_stream[_spans[span_index].in_input_stream_item]->source_cookie);
 247         result += line;
 248         snprintf(line, sizeof(line), "  in line %d (baseline=%f, shape=%d)\n", _chunks[_spans[span_index].in_chunk].in_line,
 249                  _lines[_chunks[_spans[span_index].in_chunk].in_line].baseline_y,
 250                  _lines[_chunks[_spans[span_index].in_chunk].in_line].in_shape);
 251         result += line;
 252         snprintf(line, sizeof(line), "  in chunk %d (x=%f, baselineshift=%f)\n", _spans[span_index].in_chunk, _chunks[_spans[span_index].in_chunk].left_x, _spans[span_index].baseline_shift);
 253         result += line;
 254         if (_spans[span_index].font) {
 255             snprintf(line, sizeof(line), "    font '%s' %f %s %s\n", pango_font_description_get_family(_spans[span_index].font->descr), _spans[span_index].font_size, style_to_text(pango_font_description_get_style(_spans[span_index].font->descr)), weight_to_text(pango_font_description_get_weight(_spans[span_index].font->descr)));
 256             result += line;
 257         }
 258         snprintf(line, sizeof(line), "    x_start = %f, x_end = %f\n", _spans[span_index].x_start, _spans[span_index].x_end);
 259         result += line;
 260         snprintf(line, sizeof(line), "    line height: ascent %f, descent %f leading %f\n", _spans[span_index].line_height.ascent, _spans[span_index].line_height.descent, _spans[span_index].line_height.leading);
 261         result += line;
 262         snprintf(line, sizeof(line), "    direction %s, block-progression %s\n", direction_to_text(_spans[span_index].direction), direction_to_text(_spans[span_index].block_progression));
 263         result += line;
 264         result += "    ** characters:\n";
 265         Glib::ustring::const_iterator iter_char = _spans[span_index].input_stream_first_character;
 266         // very inefficent code. what the hell, it's only debug stuff.
 267         for (unsigned char_index = 0 ; char_index < _characters.size() ; char_index++) {
 268             if (_characters[char_index].in_span != span_index) continue;
 269             if (_input_stream[_spans[span_index].in_input_stream_item]->Type() != TEXT_SOURCE) {
 270                 snprintf(line, sizeof(line), "      %d: control x=%f flags=%03x glyph=%d\n", char_index, _characters[char_index].x, *(unsigned*)&_characters[char_index].char_attributes, _characters[char_index].in_glyph);
 271             } else {
 272                 snprintf(line, sizeof(line), "      %d: '%c' x=%f flags=%03x glyph=%d\n", char_index, *iter_char, _characters[char_index].x, *(unsigned*)&_characters[char_index].char_attributes, _characters[char_index].in_glyph);
 273                 iter_char++;
 274             }
 275             result += line;
 276         }
 277         result += "    ** glyphs:\n";
 278         for (unsigned glyph_index = 0 ; glyph_index < _glyphs.size() ; glyph_index++) {
 279             if (_characters[_glyphs[glyph_index].in_character].in_span != span_index) continue;
 280             snprintf(line, sizeof(line), "      %d: %d (%f,%f) rot=%f cx=%f char=%d\n", glyph_index, _glyphs[glyph_index].glyph, _glyphs[glyph_index].x, _glyphs[glyph_index].y, _glyphs[glyph_index].rotation, _glyphs[glyph_index].width, _glyphs[glyph_index].in_character);
 281             result += line;
 282         }
 283         result += "\n";
 284     }
 285     result += "EOT\n";
 286     return result;
 287 }
 288
 289 void Layout::fitToPathAlign(SVGLength const &startOffset, Path const &path)
 290 {
 291     double offset = 0.0;
 292
 293     if (startOffset._set) {
 294         if (startOffset.unit == SVGLength::PERCENT)
 295             offset = startOffset.computed * const_cast<Path&>(path).Length();
 296         else
 297             offset = startOffset.computed;
 298     }
 299
 300     switch (_paragraphs.front().alignment) {
 301         case CENTER:
 302             offset -= _getChunkWidth(0) * 0.5;
 303             break;
 304         case RIGHT:
 305             offset -= _getChunkWidth(0);
 306             break;
 307         default:
 308             break;
 309     }
 310
 311     if (_characters.empty()) {
 312         int unused = 0;
 313         Path::cut_position *point_otp = const_cast<Path&>(path).CurvilignToPosition(1, &offset, unused);
 314         if (offset >= 0.0 && point_otp != NULL && point_otp[0].piece >= 0) {
 315             NR::Point point;
 316             NR::Point tangent;
 317             const_cast<Path&>(path).PointAndTangentAt(point_otp[0].piece, point_otp[0].t, point, tangent);
 318             _empty_cursor_shape.position = point;
 319             _empty_cursor_shape.rotation = atan2(tangent[NR::Y], tangent[NR::X]);
 320         }
 321     }
 322
 323     for (unsigned char_index = 0 ; char_index < _characters.size() ; ) {
 324         int next_cluster_glyph_index;
 325         unsigned next_cluster_char_index;
 326         double character_advance;
 327         Span const &span = _characters[char_index].span(this);
 328
 329         for (next_cluster_char_index = char_index + 1 ;
 330              next_cluster_char_index < _characters.size() && !_characters[next_cluster_char_index].char_attributes.is_cursor_position;
 331              next_cluster_char_index++);
 332
 333         if (next_cluster_char_index == _characters.size()) {
 334             next_cluster_glyph_index = _glyphs.size();
 335             character_advance = 0.0;   // arbitrary because we're not going to advance
 336         } else {
 337             next_cluster_glyph_index = _characters[next_cluster_char_index].in_glyph;
 338             character_advance =   (_glyphs[next_cluster_glyph_index].x + _glyphs[next_cluster_glyph_index].chunk(this).left_x)
 339                 - (_glyphs[_characters[char_index].in_glyph].x + span.chunk(this).left_x);
 340         }
 341
 342         double start_offset = offset + span.x_start + _characters[char_index].x;
 343         double cluster_width = 0.0;
 344         for (int glyph_index = _characters[char_index].in_glyph ; glyph_index < next_cluster_glyph_index ; glyph_index++)
 345             cluster_width += _glyphs[glyph_index].width;
 346         if (span.direction == RIGHT_TO_LEFT)
 347             start_offset -= cluster_width;
 348         double end_offset = start_offset + cluster_width;
 349
 350         int unused = 0;
 351         double midpoint_offset = (start_offset + end_offset) * 0.5;
 352         // as far as I know these functions are const, they're just not marked as such
 353         Path::cut_position *midpoint_otp = const_cast<Path&>(path).CurvilignToPosition(1, &midpoint_offset, unused);
 354         if (midpoint_offset >= 0.0 && midpoint_otp != NULL && midpoint_otp[0].piece >= 0) {
 355             NR::Point midpoint;
 356             NR::Point tangent;
 357
 358             const_cast<Path&>(path).PointAndTangentAt(midpoint_otp[0].piece, midpoint_otp[0].t, midpoint, tangent);
 359
 360             if (start_offset >= 0.0 && end_offset >= 0.0) {
 361                 Path::cut_position *start_otp = const_cast<Path&>(path).CurvilignToPosition(1, &start_offset, unused);
 362                 if (start_otp != NULL && start_otp[0].piece >= 0) {
 363                     Path::cut_position *end_otp = const_cast<Path&>(path).CurvilignToPosition(1, &end_offset, unused);
 364                     if (end_otp != NULL && end_otp[0].piece >= 0) {
 365                         bool on_same_subpath = true;
 366                         for (size_t i = 0 ; i < path.pts.size() ; i++) {
 367                             if (path.pts[i].piece <= start_otp[0].piece) continue;
 368                             if (path.pts[i].piece >= end_otp[0].piece) break;
 369                             if (path.pts[i].isMoveTo == polyline_moveto) {
 370                                 on_same_subpath = false;
 371                                 break;
 372                             }
 373                         }
 374                         if (on_same_subpath) {
 375                             // both points were on the same subpath (without this test the angle is very weird)
 376                             NR::Point startpoint, endpoint;
 377                             const_cast<Path&>(path).PointAt(start_otp[0].piece, start_otp[0].t, startpoint);
 378                             const_cast<Path&>(path).PointAt(end_otp[0].piece, end_otp[0].t, endpoint);
 379                             if (endpoint != startpoint) {
 380                                 tangent = endpoint - startpoint;
 381                                 tangent.normalize();
 382                             } else {
 383                                 tangent = NR::Point (0,0);
 384                             }
 385                         }
 386                         g_free(end_otp);
 387                     }
 388                     g_free(start_otp);
 389                 }
 390             }
 391
 392             double rotation = atan2(tangent[1], tangent[0]);
 393             for (int glyph_index = _characters[char_index].in_glyph ; glyph_index < next_cluster_glyph_index ; glyph_index++) {
 394                 double tangent_shift = -cluster_width * 0.5 + _glyphs[glyph_index].x - (_characters[char_index].x + span.x_start);
 395                 double normal_shift = _glyphs[glyph_index].y;
 396                 if (span.direction == RIGHT_TO_LEFT)
 397                     tangent_shift += cluster_width;
 398                 _glyphs[glyph_index].x = midpoint[0] - span.chunk(this).left_x + tangent[0] * tangent_shift - tangent[1] * normal_shift;
 399                 _glyphs[glyph_index].y = midpoint[1] - _lines.front().baseline_y + tangent[1] * tangent_shift + tangent[0] * normal_shift;
 400                 _glyphs[glyph_index].rotation += rotation;
 401             }
 402         } else {  // outside the bounds of the path: hide the glyphs
 403             _characters[char_index].in_glyph = -1;
 404         }
 405         g_free(midpoint_otp);
 406
 407         char_index = next_cluster_char_index;
 408     }
 409
 410     for (unsigned span_index = 0 ; span_index < _spans.size() ; span_index++) {
 411         _spans[span_index].x_start += offset;
 412         _spans[span_index].x_end += offset;
 413     }
 414
 415     _path_fitted = &path;
 416 }
 417
 418 SPCurve *Layout::convertToCurves(iterator const &from_glyph, iterator const &to_glyph) const
 419 {
 420     GSList *cc = NULL;
 421
 422     for (int glyph_index = from_glyph._glyph_index ; glyph_index < to_glyph._glyph_index ; glyph_index++) {
 423         NRMatrix glyph_matrix;
 424         Span const &span = _glyphs[glyph_index].span(this);
 425         _getGlyphTransformMatrix(glyph_index, &glyph_matrix);
 426
 427         NRBPath bpath;
 428         bpath.path = (NArtBpath*)span.font->ArtBPath(_glyphs[glyph_index].glyph);
 429         if (bpath.path) {
 430             NArtBpath *abp = nr_artpath_affine(bpath.path, glyph_matrix);
 431             SPCurve *c = sp_curve_new_from_bpath(abp);
 432             if (c) cc = g_slist_prepend(cc, c);
 433         }
 434     }
 435     cc = g_slist_reverse(cc);
 436
 437     SPCurve *curve;
 438     if ( cc ) {
 439         curve = sp_curve_concat(cc);
 440     } else {
 441         curve = sp_curve_new();
 442     }
 443
 444     while (cc) {
 445         /* fixme: This is dangerous, as we are mixing art_alloc and g_new */
 446         sp_curve_unref((SPCurve *) cc->data);
 447         cc = g_slist_remove(cc, cc->data);
 448     }
 449
 450     return curve;
 451 }
 452
 453 void Layout::transform(NR::Matrix const &transform)
 454 {
 455     // this is all massively oversimplified
 456     // I can't actually think of anybody who'll want to use it at the moment, so it'll stay simple
 457     for (unsigned glyph_index = 0 ; glyph_index < _glyphs.size() ; glyph_index++) {
 458         NR::Point point(_glyphs[glyph_index].x, _glyphs[glyph_index].y);
 459         point *= transform;
 460         _glyphs[glyph_index].x = point[0];
 461         _glyphs[glyph_index].y = point[1];
 462     }
 463 }
 464
 465 }//namespace Text
 466 }//namespace Inkscape
 467
 468
 469 /*
 470   Local Variables:
 471   mode:c++
 472   c-file-style:"stroustrup"
 473   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 474   indent-tabs-mode:nil
 475   fill-column:99
 476   End:
 477 */
 478 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :