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Diffstat (limited to 'src/text-chemistry.cpp')
| -rw-r--r-- | src/text-chemistry.cpp | 666 |
1 files changed, 666 insertions, 0 deletions
diff --git a/src/text-chemistry.cpp b/src/text-chemistry.cpp new file mode 100644 index 0000000..ba81b53 --- /dev/null +++ b/src/text-chemistry.cpp @@ -0,0 +1,666 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Text commands + * + * Authors: + * bulia byak + * Jon A. Cruz <jon@joncruz.org> + * Abhishek Sharma + * + * Copyright (C) 2004 authors + * + * Released under GNU GPL v2+, read the file 'COPYING' for more information. + */ + +#include <cstring> +#include <string> +#include <glibmm/i18n.h> +#include <glibmm/regex.h> + + +#include "desktop.h" +#include "document-undo.h" +#include "document.h" +#include "inkscape.h" +#include "message-stack.h" +#include "text-chemistry.h" +#include "text-editing.h" + +#include "object/sp-flowdiv.h" +#include "object/sp-flowregion.h" +#include "object/sp-flowtext.h" +#include "object/sp-rect.h" +#include "object/sp-textpath.h" +#include "object/sp-tspan.h" +#include "style.h" +#include "ui/icon-names.h" + +#include "xml/repr.h" + +using Inkscape::DocumentUndo; + +static SPItem * +text_or_flowtext_in_selection(Inkscape::Selection *selection) +{ + auto items = selection->items(); + for(auto i=items.begin();i!=items.end();++i){ + if (SP_IS_TEXT(*i) || SP_IS_FLOWTEXT(*i)) + return *i; + } + return nullptr; +} + +static SPItem * +shape_in_selection(Inkscape::Selection *selection) +{ + auto items = selection->items(); + for(auto i=items.begin();i!=items.end();++i){ + if (SP_IS_SHAPE(*i)) + return *i; + } + return nullptr; +} + +void +text_put_on_path() +{ + SPDesktop *desktop = SP_ACTIVE_DESKTOP; + if (!desktop) + return; + + Inkscape::Selection *selection = desktop->getSelection(); + + SPItem *text = text_or_flowtext_in_selection(selection); + SPItem *shape = shape_in_selection(selection); + + Inkscape::XML::Document *xml_doc = desktop->doc()->getReprDoc(); + + if (!text || !shape || boost::distance(selection->items()) != 2) { + desktop->getMessageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>a text and a path</b> to put text on path.")); + return; + } + + if (SP_IS_TEXT_TEXTPATH(text)) { + desktop->getMessageStack()->flash(Inkscape::ERROR_MESSAGE, _("This text object is <b>already put on a path</b>. Remove it from the path first. Use <b>Shift+D</b> to look up its path.")); + return; + } + + if (SP_IS_RECT(shape)) { + // rect is the only SPShape which is not <path> yet, and thus SVG forbids us from putting text on it + desktop->getMessageStack()->flash(Inkscape::ERROR_MESSAGE, _("You cannot put text on a rectangle in this version. Convert rectangle to path first.")); + return; + } + + // if a flowed text is selected, convert it to a regular text object + if (SP_IS_FLOWTEXT(text)) { + + if (!SP_FLOWTEXT(text)->layout.outputExists()) { + desktop->getMessageStack()-> + flash(Inkscape::WARNING_MESSAGE, + _("The flowed text(s) must be <b>visible</b> in order to be put on a path.")); + } + + Inkscape::XML::Node *repr = SP_FLOWTEXT(text)->getAsText(); + + if (!repr) return; + + Inkscape::XML::Node *parent = text->getRepr()->parent(); + parent->appendChild(repr); + + SPItem *new_item = (SPItem *) desktop->getDocument()->getObjectByRepr(repr); + new_item->doWriteTransform(text->transform); + new_item->updateRepr(); + + Inkscape::GC::release(repr); + text->deleteObject(); // delete the original flowtext + + desktop->getDocument()->ensureUpToDate(); + + selection->clear(); + + text = new_item; // point to the new text + } + + if (auto textitem = dynamic_cast<SPText *>(text)) { + // Replace any new lines (including sodipodi:role="line") by spaces. + textitem->remove_newlines(); + } + + Inkscape::Text::Layout const *layout = te_get_layout(text); + Inkscape::Text::Layout::Alignment text_alignment = layout->paragraphAlignment(layout->begin()); + + // remove transform from text, but recursively scale text's fontsize by the expansion + SP_TEXT(text)->_adjustFontsizeRecursive (text, text->transform.descrim()); + text->removeAttribute("transform"); + + // make a list of text children + std::vector<Inkscape::XML::Node *> text_reprs; + for(auto& o: text->children) { + text_reprs.push_back(o.getRepr()); + } + + // create textPath and put it into the text + Inkscape::XML::Node *textpath = xml_doc->createElement("svg:textPath"); + // reference the shape + gchar *href_str = g_strdup_printf("#%s", shape->getRepr()->attribute("id")); + textpath->setAttribute("xlink:href", href_str); + g_free(href_str); + if (text_alignment == Inkscape::Text::Layout::RIGHT) { + textpath->setAttribute("startOffset", "100%"); + } else if (text_alignment == Inkscape::Text::Layout::CENTER) { + textpath->setAttribute("startOffset", "50%"); + } + text->getRepr()->addChild(textpath, nullptr); + + for (auto i=text_reprs.rbegin();i!=text_reprs.rend();++i) { + // Make a copy of each text child + Inkscape::XML::Node *copy = (*i)->duplicate(xml_doc); + // We cannot have multiline in textpath, so remove line attrs from tspans + if (!strcmp(copy->name(), "svg:tspan")) { + copy->removeAttribute("sodipodi:role"); + copy->removeAttribute("x"); + copy->removeAttribute("y"); + } + // remove the old repr from under text + text->getRepr()->removeChild(*i); + // put its copy into under textPath + textpath->addChild(copy, nullptr); // fixme: copy id + } + + // x/y are useless with textpath, and confuse Batik 1.5 + text->removeAttribute("x"); + text->removeAttribute("y"); + + DocumentUndo::done(desktop->getDocument(), _("Put text on path"), INKSCAPE_ICON("draw-text")); +} + +void +text_remove_from_path() +{ + SPDesktop *desktop = SP_ACTIVE_DESKTOP; + + Inkscape::Selection *selection = desktop->getSelection(); + + if (selection->isEmpty()) { + desktop->getMessageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>a text on path</b> to remove it from path.")); + return; + } + + bool did = false; + auto items = selection->items(); + for(auto i=items.begin();i!=items.end();++i){ + SPObject *obj = *i; + + if (SP_IS_TEXT_TEXTPATH(obj)) { + SPObject *tp = obj->firstChild(); + + did = true; + + sp_textpath_to_text(tp); + } + } + + if (!did) { + desktop->getMessageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No texts-on-paths</b> in the selection.")); + } else { + DocumentUndo::done(desktop->getDocument(), _("Remove text from path"), INKSCAPE_ICON("draw-text")); + std::vector<SPItem *> vec(selection->items().begin(), selection->items().end()); + selection->setList(vec); // reselect to update statusbar description + } +} + +static void +text_remove_all_kerns_recursively(SPObject *o) +{ + o->removeAttribute("dx"); + o->removeAttribute("dy"); + o->removeAttribute("rotate"); + + // if x contains a list, leave only the first value + gchar const *x = o->getRepr()->attribute("x"); + if (x) { + gchar **xa_space = g_strsplit(x, " ", 0); + gchar **xa_comma = g_strsplit(x, ",", 0); + if (xa_space && *xa_space && *(xa_space + 1)) { + o->setAttribute("x", *xa_space); + } else if (xa_comma && *xa_comma && *(xa_comma + 1)) { + o->setAttribute("x", *xa_comma); + } + g_strfreev(xa_space); + g_strfreev(xa_comma); + } + + for (auto& i: o->children) { + text_remove_all_kerns_recursively(&i); + i.requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_TEXT_LAYOUT_MODIFIED_FLAG); + } +} + +//FIXME: must work with text selection +void +text_remove_all_kerns() +{ + SPDesktop *desktop = SP_ACTIVE_DESKTOP; + + Inkscape::Selection *selection = desktop->getSelection(); + + if (selection->isEmpty()) { + desktop->getMessageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>text(s)</b> to remove kerns from.")); + return; + } + + bool did = false; + + auto items = selection->items(); + for(auto i=items.begin();i!=items.end();++i){ + SPObject *obj = *i; + + if (!SP_IS_TEXT(obj) && !SP_IS_TSPAN(obj) && !SP_IS_FLOWTEXT(obj)) { + continue; + } + + text_remove_all_kerns_recursively(obj); + obj->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_TEXT_LAYOUT_MODIFIED_FLAG); + did = true; + } + + if (!did) { + desktop->getMessageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>text(s)</b> to remove kerns from.")); + } else { + DocumentUndo::done(desktop->getDocument(), _("Remove manual kerns"), INKSCAPE_ICON("draw-text")); + } +} + +void +text_flow_shape_subtract() +{ + SPDesktop *desktop = SP_ACTIVE_DESKTOP; + if (!desktop) + return; + + SPDocument *doc = desktop->getDocument(); + Inkscape::Selection *selection = desktop->getSelection(); + SPItem *text = text_or_flowtext_in_selection(selection); + + if (SP_IS_TEXT(text)) { + // Make list of all shapes. + Glib::ustring shapes; + auto items = selection->items(); + for (auto item : items) { + if (SP_IS_SHAPE(item)) { + if (!shapes.empty()) shapes += " "; + shapes += item->getUrl(); + } + } + + // Set 'shape-subtract' property. + text->style->shape_subtract.read(shapes.c_str()); + text->updateRepr(); + + DocumentUndo::done(doc, _("Flow text subtract shape"), INKSCAPE_ICON("draw-text")); + } else { + // SVG 1.2 Flowed Text + desktop->getMessageStack()->flash(Inkscape::WARNING_MESSAGE, _("Subtraction not available for SVG 1.2 Flowed text.")); + } +} + +void +text_flow_into_shape() +{ + SPDesktop *desktop = SP_ACTIVE_DESKTOP; + if (!desktop) + return; + + SPDocument *doc = desktop->getDocument(); + Inkscape::XML::Document *xml_doc = doc->getReprDoc(); + + Inkscape::Selection *selection = desktop->getSelection(); + + SPItem *text = text_or_flowtext_in_selection(selection); + SPItem *shape = shape_in_selection(selection); + + if (!text || !shape || boost::distance(selection->items()) < 2) { + desktop->getMessageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>a text</b> and one or more <b>paths or shapes</b> to flow text.")); + return; + } + + Inkscape::Preferences *prefs = Inkscape::Preferences::get(); + if (prefs->getBool("/tools/text/use_svg2", true)) { + // SVG 2 Text + + if (SP_IS_TEXT(text)) { + // Make list of all shapes. + Glib::ustring shapes; + auto items = selection->items(); + for (auto item : items) { + if (SP_IS_SHAPE(item)) { + if (!shapes.empty()) { + shapes += " "; + } else { + // can only take one shape into account for transform compensation + // compensate transform + auto const new_transform = i2i_affine(item->parent, text->parent); + auto const ex = text->transform.descrim() / new_transform.descrim(); + static_cast<SPText *>(text)->_adjustFontsizeRecursive(text, ex); + text->transform = new_transform; + } + + shapes += item->getUrl(); + } + } + + // Set 'shape-inside' property. + text->style->shape_inside.read(shapes.c_str()); + text->style->white_space.read("pre"); // Respect new lines. + text->updateRepr(); + + DocumentUndo::done(doc, _("Flow text into shape"), INKSCAPE_ICON("draw-text")); + } + } else { + if (SP_IS_TEXT(text) || SP_IS_FLOWTEXT(text)) { + // remove transform from text, but recursively scale text's fontsize by the expansion + auto ex = i2i_affine(text, shape->parent).descrim(); + SP_TEXT(text)->_adjustFontsizeRecursive(text, ex); + text->removeAttribute("transform"); + } + + Inkscape::XML::Node *root_repr = xml_doc->createElement("svg:flowRoot"); + root_repr->setAttribute("xml:space", "preserve"); // we preserve spaces in the text objects we create + root_repr->setAttribute("style", text->getRepr()->attribute("style")); // fixme: transfer style attrs too + shape->parent->getRepr()->appendChild(root_repr); + SPObject *root_object = doc->getObjectByRepr(root_repr); + g_return_if_fail(SP_IS_FLOWTEXT(root_object)); + + Inkscape::XML::Node *region_repr = xml_doc->createElement("svg:flowRegion"); + root_repr->appendChild(region_repr); + SPObject *object = doc->getObjectByRepr(region_repr); + g_return_if_fail(SP_IS_FLOWREGION(object)); + + /* Add clones */ + auto items = selection->items(); + for(auto i=items.begin();i!=items.end();++i){ + SPItem *item = *i; + if (SP_IS_SHAPE(item)){ + Inkscape::XML::Node *clone = xml_doc->createElement("svg:use"); + clone->setAttribute("x", "0"); + clone->setAttribute("y", "0"); + gchar *href_str = g_strdup_printf("#%s", item->getRepr()->attribute("id")); + clone->setAttribute("xlink:href", href_str); + g_free(href_str); + + // add the new clone to the region + region_repr->appendChild(clone); + } + } + + if (SP_IS_TEXT(text)) { // flow from text, as string + Inkscape::XML::Node *para_repr = xml_doc->createElement("svg:flowPara"); + root_repr->appendChild(para_repr); + object = doc->getObjectByRepr(para_repr); + g_return_if_fail(SP_IS_FLOWPARA(object)); + + Inkscape::Text::Layout const *layout = te_get_layout(text); + Glib::ustring text_ustring = sp_te_get_string_multiline(text, layout->begin(), layout->end()); + + Inkscape::XML::Node *text_repr = xml_doc->createTextNode(text_ustring.c_str()); // FIXME: transfer all formatting! and convert newlines into flowParas! + para_repr->appendChild(text_repr); + + Inkscape::GC::release(para_repr); + Inkscape::GC::release(text_repr); + + } else { // reflow an already flowed text, preserving paras + for(auto& o: text->children) { + if (SP_IS_FLOWPARA(&o)) { + Inkscape::XML::Node *para_repr = o.getRepr()->duplicate(xml_doc); + root_repr->appendChild(para_repr); + object = doc->getObjectByRepr(para_repr); + g_return_if_fail(SP_IS_FLOWPARA(object)); + Inkscape::GC::release(para_repr); + } + } + } + + text->deleteObject(true); + + DocumentUndo::done(doc, _("Flow text into shape"), INKSCAPE_ICON("draw-text")); + + desktop->getSelection()->set(SP_ITEM(root_object)); + + Inkscape::GC::release(root_repr); + Inkscape::GC::release(region_repr); + } +} + +void +text_unflow () +{ + SPDesktop *desktop = SP_ACTIVE_DESKTOP; + if (!desktop) + return; + + SPDocument *doc = desktop->getDocument(); + Inkscape::XML::Document *xml_doc = doc->getReprDoc(); + + Inkscape::Selection *selection = desktop->getSelection(); + + if (!text_or_flowtext_in_selection(selection) || boost::distance(selection->items()) < 1) { + desktop->getMessageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>a flowed text</b> to unflow it.")); + return; + } + + std::vector<SPItem*> new_objs; + std::vector<SPItem *> old_objs; + + auto items = selection->items(); + for (auto i : items) { + + SPFlowtext *flowtext = dynamic_cast<SPFlowtext *>(i); + SPText *text = dynamic_cast<SPText *>(i); + + if (flowtext) { + + // we discard transform when unflowing, but we must preserve expansion which is visible as + // font size multiplier + double ex = (flowtext->transform).descrim(); + + Glib::ustring text_string = sp_te_get_string_multiline(flowtext); + if (text_string.empty()) { // flowtext is empty + continue; + } + + /* Create <text> */ + Inkscape::XML::Node *rtext = xml_doc->createElement("svg:text"); + rtext->setAttribute("xml:space", "preserve"); // we preserve spaces in the text objects we create + + /* Set style */ + rtext->setAttribute("style", flowtext->getRepr()->attribute("style")); // fixme: transfer style attrs too; + // and from descendants + + Geom::OptRect bbox = flowtext->geometricBounds(flowtext->i2doc_affine()); + if (bbox) { + Geom::Point xy = bbox->min(); + rtext->setAttributeSvgDouble("x", xy[Geom::X]); + rtext->setAttributeSvgDouble("y", xy[Geom::Y]); + } + + /* Create <tspan> */ + Inkscape::XML::Node *rtspan = xml_doc->createElement("svg:tspan"); + rtspan->setAttribute("sodipodi:role", "line"); // otherwise, why bother creating the tspan? + rtext->addChild(rtspan, nullptr); + + Inkscape::XML::Node *text_repr = xml_doc->createTextNode(text_string.c_str()); // FIXME: transfer all formatting!!! + rtspan->appendChild(text_repr); + + flowtext->parent->getRepr()->appendChild(rtext); + SPObject *text_object = doc->getObjectByRepr(rtext); + + // restore the font size multiplier from the flowtext's transform + SPText *text = SP_TEXT(text_object); + text->_adjustFontsizeRecursive(text, ex); + + new_objs.push_back((SPItem *)text_object); + old_objs.push_back(flowtext); + + Inkscape::GC::release(rtext); + Inkscape::GC::release(rtspan); + Inkscape::GC::release(text_repr); + + } else if (text) { + if (text->has_shape_inside()) { + + auto old_point = text->getBaselinePoint(); + Inkscape::XML::Node *rtext = text->getRepr(); + + // Position unflowed text near shape. + Geom::OptRect bbox = text->geometricBounds(text->i2doc_affine()); + if (bbox) { + Geom::Point xy = bbox->min(); + rtext->setAttributeSvgDouble("x", xy[Geom::X]); + rtext->setAttributeSvgDouble("y", xy[Geom::Y]); + } + + // Remove 'shape-inside' property. + SPCSSAttr *css = sp_repr_css_attr(rtext, "style"); + sp_repr_css_unset_property(css, "shape-inside"); + sp_repr_css_change(rtext, css, "style"); + sp_repr_css_attr_unref(css); + + // We'll leave tspans alone other than stripping 'x' and 'y' (this will preserve + // styling). + // We'll also remove temporarily 'sodipodi:role' (which shouldn't be + // necessary later). + for (auto j : text->childList(false)) { + SPTSpan* tspan = dynamic_cast<SPTSpan *>(j); + if (tspan) { + tspan->getRepr()->removeAttribute("x"); + tspan->getRepr()->removeAttribute("y"); + tspan->getRepr()->removeAttribute("sodipodi:role"); + } + } + // Reposition the text so the baselines don't change. + text->rebuildLayout(); + auto new_point = text->getBaselinePoint(); + if (old_point && new_point) { + auto move = Geom::Translate(*old_point - *new_point) * text->transform; + text->doWriteTransform(move, &move, false); + } + } + } + } + + // For flowtext objects. + if (new_objs.size() != 0) { + + // Update selection + selection->clear(); + reverse(new_objs.begin(), new_objs.end()); + selection->setList(new_objs); + + // Delete old objects + for (auto i : old_objs) { + i->deleteObject(true); + } + } + + DocumentUndo::done(doc, _("Unflow flowed text"), INKSCAPE_ICON("draw-text")); +} + +void +flowtext_to_text() +{ + SPDesktop *desktop = SP_ACTIVE_DESKTOP; + + Inkscape::Selection *selection = desktop->getSelection(); + + if (selection->isEmpty()) { + desktop->getMessageStack()->flash(Inkscape::WARNING_MESSAGE, + _("Select <b>flowed text(s)</b> to convert.")); + return; + } + + bool did = false; + bool ignored = false; + + std::vector<Inkscape::XML::Node*> reprs; + std::vector<SPItem*> items(selection->items().begin(), selection->items().end()); + for(auto item : items){ + + if (!SP_IS_FLOWTEXT(item)) + continue; + + if (!SP_FLOWTEXT(item)->layout.outputExists()) { + ignored = true; + continue; + } + + Inkscape::XML::Node *repr = SP_FLOWTEXT(item)->getAsText(); + + if (!repr) break; + + did = true; + + Inkscape::XML::Node *parent = item->getRepr()->parent(); + parent->addChild(repr, item->getRepr()); + + SPItem *new_item = reinterpret_cast<SPItem *>(desktop->getDocument()->getObjectByRepr(repr)); + new_item->doWriteTransform(item->transform); + new_item->updateRepr(); + + Inkscape::GC::release(repr); + item->deleteObject(); + + reprs.push_back(repr); + } + + if (did) { + DocumentUndo::done(desktop->getDocument(), _("Convert flowed text to text"), INKSCAPE_ICON("text-convert-to-regular")); + selection->setReprList(reprs); + } else if (ignored) { + // no message for (did && ignored) because it is immediately overwritten + desktop->getMessageStack()-> + flash(Inkscape::ERROR_MESSAGE, + _("Flowed text(s) must be <b>visible</b> in order to be converted.")); + + } else { + desktop->getMessageStack()-> + flash(Inkscape::ERROR_MESSAGE, + _("<b>No flowed text(s)</b> to convert in the selection.")); + } + +} + + +Glib::ustring text_relink_shapes_str(gchar const *prop, std::map<Glib::ustring, Glib::ustring> const &old_to_new) { + std::vector<Glib::ustring> shapes_url = Glib::Regex::split_simple(" ", prop); + Glib::ustring res; + for (auto shape_url : shapes_url) { + if (shape_url.compare(0, 5, "url(#") != 0 || shape_url.compare(shape_url.size() - 1, 1, ")") != 0) { + std::cerr << "text_relink_shapes_str: Invalid shape value: " << shape_url << std::endl; + } else { + auto old_id = shape_url.substr(5, shape_url.size() - 6); + auto find_it = old_to_new.find(old_id); + if (find_it != old_to_new.end()) { + res.append("url(#").append(find_it->second).append(") "); + } else { + std::cerr << "Failed to replace reference " << old_id << std::endl; + } + } + } + // remove trailing space + if (!res.empty()) { + assert(res.raw().back() == ' '); + res.resize(res.size() - 1); + } + return res; +} + +/* + Local Variables: + mode:c++ + c-file-style:"stroustrup" + c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +)) + indent-tabs-mode:nil + fill-column:99 + End: +*/ +// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 : |