Adding upstream version 1.2.2.upstream/1.2.2upstream

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

1 files changed, 274 insertions, 0 deletions

diff --git a/src/object/box3d-side.cpp b/src/object/box3d-side.cpp
new file mode 100644
index 0000000..f79279f
--- /dev/null
+++ b/src/object/box3d-side.cpp
@@ -0,0 +1,274 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * 3D box face implementation
+ *
+ * Authors:
+ *   Maximilian Albert <Anhalter42@gmx.de>
+ *   Abhishek Sharma
+ *   Jon A. Cruz <jon@joncruz.org>
+ *
+ * Copyright (C) 2007  Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include "box3d-side.h"
+#include "document.h"
+#include "xml/document.h"
+#include "xml/repr.h"
+#include "display/curve.h"
+#include "svg/svg.h"
+#include "attributes.h"
+#include "inkscape.h"
+#include "object/persp3d.h"
+#include "object/persp3d-reference.h"
+#include "object/box3d.h"
+#include "ui/tools/box3d-tool.h"
+#include "desktop-style.h"
+
+static void box3d_side_compute_corner_ids(Box3DSide *side, unsigned int corners[4]);
+
+Box3DSide::Box3DSide() : SPPolygon() {
+    this->dir1 = Box3D::NONE;
+    this->dir2 = Box3D::NONE;
+    this->front_or_rear = Box3D::FRONT;
+}
+
+Box3DSide::~Box3DSide() = default;
+
+void Box3DSide::build(SPDocument * document, Inkscape::XML::Node * repr) {
+    SPPolygon::build(document, repr);
+
+    this->readAttr(SPAttr::INKSCAPE_BOX3D_SIDE_TYPE);
+}
+
+
+Inkscape::XML::Node* Box3DSide::write(Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags) {
+    if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
+        // this is where we end up when saving as plain SVG (also in other circumstances?)
+        // thus we don' set "sodipodi:type" so that the box is only saved as an ordinary svg:path
+        repr = xml_doc->createElement("svg:path");
+    }
+
+    if (flags & SP_OBJECT_WRITE_EXT) {
+        repr->setAttributeInt("inkscape:box3dsidetype", this->dir1 ^ this->dir2 ^ this->front_or_rear);
+    }
+
+    this->set_shape();
+
+    /* Duplicate the path */
+    SPCurve const *curve = this->_curve.get();
+
+    //Nulls might be possible if this called iteratively
+    if ( !curve ) {
+        return nullptr;
+    }
+
+    repr->setAttribute("d", sp_svg_write_path(curve->get_pathvector()));
+
+    SPPolygon::write(xml_doc, repr, flags);
+
+    return repr;
+}
+
+void Box3DSide::set(SPAttr key, const gchar* value) {
+    // TODO: In case the box was recreated (by undo, e.g.) we need to recreate the path
+    //       (along with other info?) from the parent box.
+
+    /* fixme: we should really collect updates */
+    switch (key) {
+        case SPAttr::INKSCAPE_BOX3D_SIDE_TYPE:
+            if (value) {
+                guint desc = atoi (value);
+
+                if (!Box3D::is_face_id(desc)) {
+                    g_print ("desc is not a face id: =%s=\n", value);
+                }
+
+                g_return_if_fail (Box3D::is_face_id (desc));
+
+                Box3D::Axis plane = (Box3D::Axis) (desc & 0x7);
+                plane = (Box3D::is_plane(plane) ? plane : Box3D::orth_plane_or_axis(plane));
+                this->dir1 = Box3D::extract_first_axis_direction(plane);
+                this->dir2 = Box3D::extract_second_axis_direction(plane);
+                this->front_or_rear = (Box3D::FrontOrRear) (desc & 0x8);
+
+                this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+            }
+            break;
+    default:
+        SPPolygon::set(key, value);
+        break;
+    }
+}
+
+void Box3DSide::update(SPCtx* ctx, guint flags) {
+    if (flags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG | SP_OBJECT_VIEWPORT_MODIFIED_FLAG)) {
+        flags &= ~SP_OBJECT_USER_MODIFIED_FLAG_B; // since we change the description, it's not a "just translation" anymore
+    }
+
+    if (flags & (SP_OBJECT_MODIFIED_FLAG |
+                 SP_OBJECT_STYLE_MODIFIED_FLAG |
+                 SP_OBJECT_VIEWPORT_MODIFIED_FLAG)) {
+
+        this->set_shape();
+    }
+
+    SPPolygon::update(ctx, flags);
+}
+
+/* Create a new Box3DSide and append it to the parent box */
+Box3DSide * Box3DSide::createBox3DSide(SPBox3D *box)
+{
+	Box3DSide *box3d_side = nullptr;
+	Inkscape::XML::Document *xml_doc = box->document->getReprDoc();;
+	Inkscape::XML::Node *repr_side = xml_doc->createElement("svg:path");
+	repr_side->setAttribute("sodipodi:type", "inkscape:box3dside");
+	box3d_side = static_cast<Box3DSide *>(box->appendChildRepr(repr_side));
+	return box3d_side;
+}
+
+/*
+ * Function which return the type attribute for Box3D. 
+ * Acts as a replacement for directly accessing the XML Tree directly.
+ */
+int Box3DSide::getFaceId()
+{
+	    return this->getIntAttribute("inkscape:box3dsidetype", -1);
+}
+
+void
+Box3DSide::position_set () {
+	this->set_shape();
+
+    // This call is responsible for live update of the sides during the initial drag
+    this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+}
+
+void Box3DSide::set_shape() {
+    if (!this->document->getRoot()) {
+        // avoid a warning caused by sp_document_height() (which is called from sp_item_i2d_affine() below)
+        // when reading a file containing 3D boxes
+        return;
+    }
+
+    SPObject *parent = this->parent;
+
+    SPBox3D *box = dynamic_cast<SPBox3D *>(parent);
+    if (!box) {
+        g_warning("Parent of 3D box side is not a 3D box.\n");
+        return;
+    }
+
+    Persp3D *persp = this->perspective();
+
+    if (!persp) {
+        return;
+    }
+
+    // TODO: Draw the correct quadrangle here
+    //       To do this, determine the perspective of the box, the orientation of the side (e.g., XY-FRONT)
+    //       compute the coordinates of the corners in P^3, project them onto the canvas, and draw the
+    //       resulting path.
+
+    unsigned int corners[4];
+    box3d_side_compute_corner_ids(this, corners);
+
+    auto c = std::make_unique<SPCurve>();
+
+    if (!box->get_corner_screen(corners[0]).isFinite() ||
+        !box->get_corner_screen(corners[1]).isFinite() ||
+        !box->get_corner_screen(corners[2]).isFinite() ||
+        !box->get_corner_screen(corners[3]).isFinite() )
+    {
+        g_warning ("Trying to draw a 3D box side with invalid coordinates.\n");
+        return;
+    }
+
+    c->moveto(box->get_corner_screen(corners[0]));
+    c->lineto(box->get_corner_screen(corners[1]));
+    c->lineto(box->get_corner_screen(corners[2]));
+    c->lineto(box->get_corner_screen(corners[3]));
+    c->closepath();
+
+    /* Reset the shape's curve to the "original_curve"
+     * This is very important for LPEs to work properly! (the bbox might be recalculated depending on the curve in shape)*/
+
+    SPCurve const *before = curveBeforeLPE();
+    if (before && before->get_pathvector() != c->get_pathvector()) {
+        setCurveBeforeLPE(std::move(c));
+        sp_lpe_item_update_patheffect(this, true, false);
+        return;
+    }
+
+    if (hasPathEffectOnClipOrMaskRecursive(this)) {
+        setCurveBeforeLPE(std::move(c));
+        return;
+    }
+
+    // This happends on undo, fix bug:#1791784
+    setCurveInsync(std::move(c));
+}
+
+Glib::ustring Box3DSide::axes_string() const
+{
+    Glib::ustring result(Box3D::string_from_axes((Box3D::Axis) (this->dir1 ^ this->dir2)));
+
+    switch ((Box3D::Axis) (this->dir1 ^ this->dir2)) {
+        case Box3D::XY:
+            result += ((this->front_or_rear == Box3D::FRONT) ? "front" : "rear");
+            break;
+
+        case Box3D::XZ:
+            result += ((this->front_or_rear == Box3D::FRONT) ? "top" : "bottom");
+            break;
+
+        case Box3D::YZ:
+            result += ((this->front_or_rear == Box3D::FRONT) ? "right" : "left");
+            break;
+
+        default:
+            break;
+    }
+
+    return result;
+}
+
+static void
+box3d_side_compute_corner_ids(Box3DSide *side, unsigned int corners[4]) {
+    Box3D::Axis orth = Box3D::third_axis_direction (side->dir1, side->dir2);
+
+    corners[0] = (side->front_or_rear ? orth : 0);
+    corners[1] = corners[0] ^ side->dir1;
+    corners[2] = corners[0] ^ side->dir1 ^ side->dir2;
+    corners[3] = corners[0] ^ side->dir2;
+}
+
+Persp3D *
+Box3DSide::perspective() const {
+    SPBox3D *box = dynamic_cast<SPBox3D *>(this->parent);
+    return box ? box->persp_ref->getObject() : nullptr;
+}
+
+Inkscape::XML::Node *Box3DSide::convert_to_path() const {
+    // TODO: Copy over all important attributes (see sp_selected_item_to_curved_repr() for an example)
+    SPDocument *doc = this->document;
+    Inkscape::XML::Document *xml_doc = doc->getReprDoc();
+
+    Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
+    repr->setAttribute("d", this->getAttribute("d"));
+    repr->setAttribute("style", this->getAttribute("style"));
+
+    return repr;
+}
+
+/*
+  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 :