diff options
Diffstat (limited to 'lib/lettering/font.py')
| -rw-r--r-- | lib/lettering/font.py | 80 |
1 files changed, 69 insertions, 11 deletions
diff --git a/lib/lettering/font.py b/lib/lettering/font.py index 328d2ba4..5a617da1 100644 --- a/lib/lettering/font.py +++ b/lib/lettering/font.py @@ -10,15 +10,16 @@ from random import randint import inkex -from ..commands import ensure_symbol -from ..elements import nodes_to_elements +from ..commands import add_commands, ensure_symbol +from ..elements import FillStitch, Stroke, nodes_to_elements from ..exceptions import InkstitchException from ..extensions.lettering_custom_font_dir import get_custom_font_dir from ..i18n import _, get_languages -from ..marker import MARKER, ensure_marker +from ..marker import MARKER, ensure_marker, has_marker from ..stitches.auto_satin import auto_satin -from ..svg.tags import (CONNECTION_END, CONNECTION_START, INKSCAPE_LABEL, - SVG_PATH_TAG, SVG_USE_TAG, XLINK_HREF) +from ..svg.tags import (CONNECTION_END, CONNECTION_START, EMBROIDERABLE_TAGS, + INKSCAPE_LABEL, SVG_GROUP_TAG, SVG_PATH_TAG, + SVG_USE_TAG, XLINK_HREF) from ..utils import Point from .font_variant import FontVariant @@ -180,7 +181,8 @@ class Font(object): def is_custom_font(self): return get_custom_font_dir() in self.path - def render_text(self, text, destination_group, variant=None, back_and_forth=True, trim=False): + def render_text(self, text, destination_group, variant=None, back_and_forth=True, trim_option=0): + """Render text into an SVG group element.""" self._load_variants() @@ -206,7 +208,7 @@ class Font(object): position.y += self.leading if self.auto_satin and len(destination_group) > 0: - self._apply_auto_satin(destination_group, trim) + self._apply_auto_satin(destination_group) # make sure font stroke styles have always a similar look for element in destination_group.iterdescendants(SVG_PATH_TAG): @@ -220,6 +222,8 @@ class Font(object): style += inkex.Style("stroke-width:0.5px") element.set('style', '%s' % style.to_str()) + # add trims + self._add_trims(destination_group, text, trim_option, back_and_forth) # make sure necessary marker and command symbols are in the defs section self._ensure_command_symbols(destination_group) self._ensure_marker_symbols(destination_group) @@ -309,6 +313,10 @@ class Font(object): self._update_commands(node, glyph) + # this is used to recognize a glyph layer later in the process + # because this is not unique it will be overwritten by inkscape when inserted into the document + node.set("id", "glyph") + return node def _update_commands(self, node, glyph): @@ -329,6 +337,58 @@ class Font(object): c.set(CONNECTION_END, "#%s" % new_element_id) c.set(CONNECTION_START, "#%s" % new_symbol_id) + def _add_trims(self, destination_group, text, trim_option, back_and_forth): + """ + trim_option == 0 --> no trims + trim_option == 1 --> trim at the end of each line + trim_option == 2 --> trim after each word + trim_option == 3 --> trim after each letter + """ + if trim_option == 0: + return + + # reverse every second line of text if back and forth is true and strip spaces + text = text.splitlines() + text = [t[::-1].strip() if i % 2 != 0 and back_and_forth else t.strip() for i, t in enumerate(text)] + text = "\n".join(text) + + i = -1 + space_indices = [i for i, t in enumerate(text) if t == " "] + line_break_indices = [i for i, t in enumerate(text) if t == "\n"] + for group in destination_group.iterdescendants(SVG_GROUP_TAG): + # make sure we are only looking at glyph groups + if group.get("id") != "glyph": + continue + + i += 1 + while i in space_indices + line_break_indices: + i += 1 + + # letter + if trim_option == 3: + self._process_trim(group) + # word + elif trim_option == 2 and i+1 in space_indices + line_break_indices: + self._process_trim(group) + # line + elif trim_option == 1 and i+1 in line_break_indices: + self._process_trim(group) + + def _process_trim(self, group): + # find the last path that does not carry a marker and add a trim there + for path_child in group.iterdescendants(EMBROIDERABLE_TAGS): + if not has_marker(path_child): + path = path_child + if path.get('style') and "fill" in path.get('style'): + element = FillStitch(path) + else: + element = Stroke(path) + + if element.shape: + element_id = "%s_%s" % (element.node.get('id'), randint(0, 9999)) + element.node.set("id", element_id) + add_commands(element, ['trim']) + def _ensure_command_symbols(self, group): # collect commands commands = set() @@ -349,16 +409,14 @@ class Font(object): for element in marked_elements: element.style['marker-start'] = "url(#inkstitch-%s-marker)" % marker - def _apply_auto_satin(self, group, trim): + def _apply_auto_satin(self, group): """Apply Auto-Satin to an SVG XML node tree with an svg:g at its root. The group's contents will be replaced with the results of the auto- satin operation. Any nested svg:g elements will be removed. """ - # TODO: trim option for non-auto-route - elements = nodes_to_elements(group.iterdescendants(SVG_PATH_TAG)) if elements: - auto_satin(elements, preserve_order=True, trim=trim) + auto_satin(elements, preserve_order=True, trim=False) |