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Diffstat (limited to 'src/live_effects/parameter/vector.cpp')
| -rw-r--r-- | src/live_effects/parameter/vector.cpp | 250 |
1 files changed, 250 insertions, 0 deletions
diff --git a/src/live_effects/parameter/vector.cpp b/src/live_effects/parameter/vector.cpp new file mode 100644 index 0000000..16b83fb --- /dev/null +++ b/src/live_effects/parameter/vector.cpp @@ -0,0 +1,250 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) Johan Engelen 2008 <j.b.c.engelen@utwente.nl> + * + * Released under GNU GPL v2+, read the file 'COPYING' for more information. + */ + +#include "vector.h" + +#include <glibmm/i18n.h> + +#include "live_effects/effect.h" +#include "svg/svg.h" +#include "svg/stringstream.h" +#include "ui/icon-names.h" +#include "ui/knot/knot-holder.h" +#include "ui/knot/knot-holder-entity.h" +#include "ui/widget/registered-widget.h" + + +namespace Inkscape { + +namespace LivePathEffect { + +VectorParam::VectorParam( const Glib::ustring& label, const Glib::ustring& tip, + const Glib::ustring& key, Inkscape::UI::Widget::Registry* wr, + Effect* effect, Geom::Point default_vector) + : Parameter(label, tip, key, wr, effect), + defvalue(default_vector), + origin(0.,0.), + vector(default_vector) +{ +} + +VectorParam::~VectorParam() += default; + +void +VectorParam::param_set_default() +{ + setOrigin(Geom::Point(0.,0.)); + setVector(defvalue); +} + +void +VectorParam::param_update_default(Geom::Point default_point) +{ + defvalue = default_point; +} + +void +VectorParam::param_update_default(const gchar * default_point) +{ + gchar ** strarray = g_strsplit(default_point, ",", 2); + double newx, newy; + unsigned int success = sp_svg_number_read_d(strarray[0], &newx); + success += sp_svg_number_read_d(strarray[1], &newy); + g_strfreev (strarray); + if (success == 2) { + param_update_default( Geom::Point(newx, newy) ); + } +} + +bool +VectorParam::param_readSVGValue(const gchar * strvalue) +{ + gchar ** strarray = g_strsplit(strvalue, ",", 4); + if (!strarray) { + return false; + } + double val[4]; + unsigned int i = 0; + while (i < 4 && strarray[i]) { + if (sp_svg_number_read_d(strarray[i], &val[i]) != 0) { + i++; + } else { + break; + } + } + g_strfreev (strarray); + if (i == 4) { + setOrigin( Geom::Point(val[0], val[1]) ); + setVector( Geom::Point(val[2], val[3]) ); + return true; + } + return false; +} + +Glib::ustring +VectorParam::param_getSVGValue() const +{ + Inkscape::SVGOStringStream os; + os << origin << " , " << vector; + return os.str(); +} + +Glib::ustring +VectorParam::param_getDefaultSVGValue() const +{ + Inkscape::SVGOStringStream os; + os << defvalue; + return os.str(); +} + +Gtk::Widget * +VectorParam::param_newWidget() +{ + Inkscape::UI::Widget::RegisteredVector * pointwdg = Gtk::manage( + new Inkscape::UI::Widget::RegisteredVector( param_label, + param_tooltip, + param_key, + *param_wr, + param_effect->getRepr(), + param_effect->getSPDoc() ) ); + pointwdg->setPolarCoords(); + pointwdg->setValue( vector, origin ); + pointwdg->clearProgrammatically(); + pointwdg->set_undo_parameters(_("Change vector parameter"), INKSCAPE_ICON("dialog-path-effects")); + + Gtk::Box * hbox = Gtk::manage( new Gtk::Box(Gtk::ORIENTATION_HORIZONTAL) ); + hbox->pack_start(*pointwdg, true, true); + hbox->show_all_children(); + + return dynamic_cast<Gtk::Widget *> (hbox); +} + +void +VectorParam::set_and_write_new_values(Geom::Point const &new_origin, Geom::Point const &new_vector) +{ + setValues(new_origin, new_vector); + param_write_to_repr(param_getSVGValue().c_str()); +} + +void +VectorParam::param_transform_multiply(Geom::Affine const& postmul, bool /*set*/) +{ + set_and_write_new_values( origin * postmul, vector * postmul.withoutTranslation() ); +} + + +void +VectorParam::set_vector_oncanvas_looks(Inkscape::CanvasItemCtrlShape shape, + Inkscape::CanvasItemCtrlMode mode, + guint32 color) +{ + vec_knot_shape = shape; + vec_knot_mode = mode; + vec_knot_color = color; +} + +void +VectorParam::set_origin_oncanvas_looks(Inkscape::CanvasItemCtrlShape shape, + Inkscape::CanvasItemCtrlMode mode, + guint32 color) +{ + ori_knot_shape = shape; + ori_knot_mode = mode; + ori_knot_color = color; +} + +void +VectorParam::set_oncanvas_color(guint32 color) +{ + vec_knot_color = color; + ori_knot_color = color; +} + +class VectorParamKnotHolderEntity_Origin : public KnotHolderEntity { +public: + VectorParamKnotHolderEntity_Origin(VectorParam *p) : param(p) { } + ~VectorParamKnotHolderEntity_Origin() override = default; + + void knot_set(Geom::Point const &p, Geom::Point const &/*origin*/, guint state) override { + Geom::Point const s = snap_knot_position(p, state); + param->setOrigin(s); + param->set_and_write_new_values(param->origin, param->vector); + sp_lpe_item_update_patheffect(SP_LPE_ITEM(item), false, false); + }; + Geom::Point knot_get() const override { + return param->origin; + }; + void knot_ungrabbed(Geom::Point const &p, Geom::Point const &origin, guint state) override + { + param->param_effect->refresh_widgets = true; + param->write_to_SVG(); + }; + void knot_click(guint /*state*/) override{ + g_print ("This is the origin handle associated to parameter '%s'\n", param->param_key.c_str()); + }; + +private: + VectorParam *param; +}; + +class VectorParamKnotHolderEntity_Vector : public KnotHolderEntity { +public: + VectorParamKnotHolderEntity_Vector(VectorParam *p) : param(p) { } + ~VectorParamKnotHolderEntity_Vector() override = default; + + void knot_set(Geom::Point const &p, Geom::Point const &/*origin*/, guint /*state*/) override { + Geom::Point const s = p - param->origin; + /// @todo implement angle snapping when holding CTRL + param->setVector(s); + param->set_and_write_new_values(param->origin, param->vector); + sp_lpe_item_update_patheffect(SP_LPE_ITEM(item), false, false); + }; + Geom::Point knot_get() const override { + return param->origin + param->vector; + }; + void knot_ungrabbed(Geom::Point const &p, Geom::Point const &origin, guint state) override + { + param->param_effect->refresh_widgets = true; + param->write_to_SVG(); + }; + void knot_click(guint /*state*/) override{ + g_print ("This is the vector handle associated to parameter '%s'\n", param->param_key.c_str()); + }; + +private: + VectorParam *param; +}; + +void +VectorParam::addKnotHolderEntities(KnotHolder *knotholder, SPItem *item) +{ + VectorParamKnotHolderEntity_Origin *origin_e = new VectorParamKnotHolderEntity_Origin(this); + origin_e->create(nullptr, item, knotholder, Inkscape::CANVAS_ITEM_CTRL_TYPE_LPE, "LPE:Origin", + handleTip(), ori_knot_color); + knotholder->add(origin_e); + + VectorParamKnotHolderEntity_Vector *vector_e = new VectorParamKnotHolderEntity_Vector(this); + vector_e->create(nullptr, item, knotholder, Inkscape::CANVAS_ITEM_CTRL_TYPE_LPE, "LPE:Vector", + handleTip(), vec_knot_color); + knotholder->add(vector_e); +} + +} /* namespace LivePathEffect */ + +} /* 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 : |