Adding upstream version 1.2.2.upstream/1.2.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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 :