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Diffstat (limited to '')
| -rw-r--r-- | src/extension/internal/grid.cpp | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/src/extension/internal/grid.cpp b/src/extension/internal/grid.cpp new file mode 100644 index 0000000..8c1ae0d --- /dev/null +++ b/src/extension/internal/grid.cpp @@ -0,0 +1,228 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/** + \file grid.cpp + + A plug-in to add a grid creation effect into Inkscape. +*/ +/* + * Copyright (C) 2004-2005 Ted Gould <ted@gould.cx> + * Copyright (C) 2007 MenTaLguY <mental@rydia.net> + * Abhishek Sharma + * + * Released under GNU GPL v2+, read the file 'COPYING' for more information. + */ + +#include <gtkmm/box.h> +#include <gtkmm/adjustment.h> +#include <gtkmm/spinbutton.h> + +#include "desktop.h" + +#include "document.h" +#include "layer-manager.h" +#include "selection.h" +#include "2geom/geom.h" + +#include "svg/path-string.h" + +#include "extension/effect.h" +#include "extension/system.h" + +#include "util/units.h" + +#include "grid.h" + +namespace Inkscape { +namespace Extension { +namespace Internal { + +/** + \brief A function to allocated anything -- just an example here + \param module Unused + \return Whether the load was successful +*/ +bool +Grid::load (Inkscape::Extension::Extension */*module*/) +{ + // std::cout << "Hey, I'm Grid, I'm loading!" << std::endl; + return TRUE; +} + +namespace { + +Glib::ustring build_lines(Geom::Rect bounding_area, + Geom::Point const &offset, Geom::Point const &spacing) +{ + Geom::Point point_offset(0.0, 0.0); + + SVG::PathString path_data; + + for ( int axis = Geom::X ; axis <= Geom::Y ; ++axis ) { + point_offset[axis] = offset[axis]; + + for (Geom::Point start_point = bounding_area.min(); + start_point[axis] + offset[axis] <= (bounding_area.max())[axis]; + start_point[axis] += spacing[axis]) { + Geom::Point end_point = start_point; + end_point[1-axis] = (bounding_area.max())[1-axis]; + + path_data.moveTo(start_point + point_offset) + .lineTo(end_point + point_offset); + } + } + // std::cout << "Path data:" << path_data.c_str() << std::endl; + return path_data; +} + +} // namespace + +/** + \brief This actually draws the grid. + \param module The effect that was called (unused) + \param document What should be edited. +*/ +void +Grid::effect (Inkscape::Extension::Effect *module, Inkscape::UI::View::View *view, Inkscape::Extension::Implementation::ImplementationDocumentCache * /*docCache*/) +{ + auto desktop = dynamic_cast<SPDesktop *>(view); + Inkscape::Selection *selection = desktop->selection; + SPDocument *doc = desktop->doc(); + + Geom::Rect bounding_area = Geom::Rect(Geom::Point(0,0), Geom::Point(100,100)); + if (selection->isEmpty()) { + /* get page size */ + if (auto bounds = doc->preferredBounds()) { + bounding_area = *bounds; + } + } else { + if (auto bounds = selection->visualBounds()) { + bounding_area = *bounds; + } + Geom::Rect temprec = bounding_area * desktop->doc2dt(); + bounding_area = temprec; + } + + double scale = doc->getDocumentScale().inverse()[Geom::X]; + + bounding_area *= Geom::Scale(scale); + Geom::Point spacings( scale * module->get_param_float("xspacing"), + scale * module->get_param_float("yspacing") ); + gdouble line_width = scale * module->get_param_float("lineWidth"); + Geom::Point offsets( scale * module->get_param_float("xoffset"), + scale * module->get_param_float("yoffset") ); + + Glib::ustring path_data(""); + + path_data = build_lines(bounding_area, offsets, spacings); + Inkscape::XML::Document * xml_doc = doc->getReprDoc(); + + //XML Tree being used directly here while it shouldn't be. + Inkscape::XML::Node * current_layer = desktop->layerManager().currentLayer()->getRepr(); + Inkscape::XML::Node * path = xml_doc->createElement("svg:path"); + + path->setAttribute("d", path_data); + + std::ostringstream stringstream; + stringstream << "fill:none;stroke:#000000;stroke-width:" << line_width << "px"; + path->setAttribute("style", stringstream.str()); + + current_layer->appendChild(path); + Inkscape::GC::release(path); +} + +/** \brief A class to make an adjustment that uses Extension params */ +class PrefAdjustment : public Gtk::Adjustment { + /** Extension that this relates to */ + Inkscape::Extension::Extension * _ext; + /** The string which represents the parameter */ + char * _pref; +public: + /** \brief Make the adjustment using an extension and the string + describing the parameter. */ + PrefAdjustment(Inkscape::Extension::Extension * ext, char * pref) : + Gtk::Adjustment(0.0, 0.0, 10.0, 0.1), _ext(ext), _pref(pref) { + this->set_value(_ext->get_param_float(_pref)); + this->signal_value_changed().connect(sigc::mem_fun(this, &PrefAdjustment::val_changed)); + return; + }; + + void val_changed (); +}; /* class PrefAdjustment */ + +/** \brief A function to respond to the value_changed signal from the + adjustment. + + This function just grabs the value from the adjustment and writes + it to the parameter. Very simple, but yet beautiful. +*/ +void +PrefAdjustment::val_changed () +{ + // std::cout << "Value Changed to: " << this->get_value() << std::endl; + _ext->set_param_float(_pref, this->get_value()); + return; +} + +/** \brief A function to get the preferences for the grid + \param module Module which holds the params + \param view Unused today - may get style information in the future. + + Uses AutoGUI for creating the GUI. +*/ +Gtk::Widget * +Grid::prefs_effect(Inkscape::Extension::Effect *module, Inkscape::UI::View::View * view, sigc::signal<void> * changeSignal, Inkscape::Extension::Implementation::ImplementationDocumentCache * /*docCache*/) +{ + SPDocument * current_document = view->doc(); + + auto selected = ((SPDesktop *) view)->getSelection()->items(); + Inkscape::XML::Node * first_select = nullptr; + if (!selected.empty()) { + first_select = selected.front()->getRepr(); + } + + return module->autogui(current_document, first_select, changeSignal); +} + +#include "clear-n_.h" + +void +Grid::init () +{ + // clang-format off + Inkscape::Extension::build_from_mem( + "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n" + "<name>" N_("Grid") "</name>\n" + "<id>org.inkscape.effect.grid</id>\n" + "<param name=\"lineWidth\" gui-text=\"" N_("Line Width:") "\" type=\"float\">1.0</param>\n" + "<param name=\"xspacing\" gui-text=\"" N_("Horizontal Spacing:") "\" type=\"float\" min=\"0.1\" max=\"1000\">10.0</param>\n" + "<param name=\"yspacing\" gui-text=\"" N_("Vertical Spacing:") "\" type=\"float\" min=\"0.1\" max=\"1000\">10.0</param>\n" + "<param name=\"xoffset\" gui-text=\"" N_("Horizontal Offset:") "\" type=\"float\" min=\"0.0\" max=\"1000\">0.0</param>\n" + "<param name=\"yoffset\" gui-text=\"" N_("Vertical Offset:") "\" type=\"float\" min=\"0.0\" max=\"1000\">0.0</param>\n" + "<effect>\n" + "<object-type>all</object-type>\n" + "<effects-menu>\n" + "<submenu name=\"" N_("Render") "\">\n" + "<submenu name=\"" N_("Grids") "\" />\n" + "</submenu>\n" + "</effects-menu>\n" + "<menu-tip>" N_("Draw a path which is a grid") "</menu-tip>\n" + "</effect>\n" + "</inkscape-extension>\n", new Grid()); + // clang-format on + return; +} + +}; /* namespace Internal */ +}; /* namespace Extension */ +}; /* namespace Inkscape */ + +/* + 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 : |