Adding upstream version 1.2.2.upstream/1.2.2upstream

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

1 files changed, 217 insertions, 0 deletions

diff --git a/src/object/sp-use-reference.cpp b/src/object/sp-use-reference.cpp
new file mode 100644
index 0000000..782c9b8
--- /dev/null
+++ b/src/object/sp-use-reference.cpp
@@ -0,0 +1,217 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * The reference corresponding to href of <use> element.
+ *
+ * Copyright (C) 2004 Bulia Byak
+ * Copyright (C) 2004 Monash University
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include "sp-use-reference.h"
+
+#include <cstring>
+#include <string>
+
+#include "bad-uri-exception.h"
+#include "enums.h"
+
+#include "display/curve.h"
+#include "livarot/Path.h"
+#include "preferences.h"
+#include "sp-shape.h"
+#include "sp-text.h"
+#include "uri.h"
+
+bool SPUseReference::_acceptObject(SPObject * const obj) const
+{
+    return URIReference::_acceptObject(obj);
+}
+
+
+static void sp_usepath_href_changed(SPObject *old_ref, SPObject *ref, SPUsePath *offset);
+static void sp_usepath_move_compensate(Geom::Affine const *mp, SPItem *original, SPUsePath *self);
+static void sp_usepath_delete_self(SPObject *deleted, SPUsePath *offset);
+static void sp_usepath_source_modified(SPObject *iSource, guint flags, SPUsePath *offset);
+
+SPUsePath::SPUsePath(SPObject* i_owner): SPUseReference(i_owner)
+    , owner(i_owner)
+{
+    _changed_connection = changedSignal().connect(sigc::bind(sigc::ptr_fun(sp_usepath_href_changed), this)); // listening to myself, this should be virtual instead
+    user_unlink = nullptr;
+}
+
+SPUsePath::~SPUsePath()
+{
+    _changed_connection.disconnect(); // to do before unlinking
+
+    quit_listening();
+    unlink();
+}
+
+void
+SPUsePath::link(char *to)
+{
+    if ( to == nullptr ) {
+        quit_listening();
+        unlink();
+    } else {
+        if ( !sourceHref || ( strcmp(to, sourceHref) != 0 ) ) {
+            g_free(sourceHref);
+            sourceHref = g_strdup(to);
+            try {
+                attach(Inkscape::URI(to));
+            } catch (Inkscape::BadURIException &e) {
+                /* TODO: Proper error handling as per
+                 * http://www.w3.org/TR/SVG11/implnote.html#ErrorProcessing.
+                 */
+                g_warning("%s", e.what());
+                detach();
+            }
+        }
+    }
+}
+
+void
+SPUsePath::unlink()
+{
+    g_free(sourceHref);
+    sourceHref = nullptr;
+    detach();
+}
+
+void
+SPUsePath::start_listening(SPObject* to)
+{
+    if ( to == nullptr ) {
+        return;
+    }
+    sourceObject = to;
+    sourceRepr = to->getRepr();
+    _delete_connection = to->connectDelete(sigc::bind(sigc::ptr_fun(&sp_usepath_delete_self), this));
+    _transformed_connection = SP_ITEM(to)->connectTransformed(sigc::bind(sigc::ptr_fun(&sp_usepath_move_compensate), this));
+    _modified_connection = to->connectModified(sigc::bind<2>(sigc::ptr_fun(&sp_usepath_source_modified), this));
+}
+
+void
+SPUsePath::quit_listening()
+{
+    if ( sourceObject == nullptr ) {
+        return;
+    }
+    _modified_connection.disconnect();
+    _delete_connection.disconnect();
+    _transformed_connection.disconnect();
+    sourceRepr = nullptr;
+    sourceObject = nullptr;
+}
+
+static void
+sp_usepath_href_changed(SPObject */*old_ref*/, SPObject */*ref*/, SPUsePath *offset)
+{
+    offset->quit_listening();
+    SPItem *refobj = offset->getObject();
+    if ( refobj ) {
+        offset->start_listening(refobj);
+    }
+    offset->sourceDirty=true;
+    offset->owner->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+}
+
+static void
+sp_usepath_move_compensate(Geom::Affine const *mp, SPItem *original, SPUsePath *self)
+{
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    guint mode = prefs->getInt("/options/clonecompensation/value", SP_CLONE_COMPENSATION_PARALLEL);
+    if (mode == SP_CLONE_COMPENSATION_NONE) {
+        return;
+    }
+    SPItem *item = SP_ITEM(self->owner);
+
+// TODO kill naughty naughty #if 0
+#if 0
+    Geom::Affine m(*mp);
+    if (!(m.is_translation())) {
+        return;
+    }
+    Geom::Affine const t(item->transform);
+    Geom::Affine clone_move = t.inverse() * m * t;
+
+    // Calculate the compensation matrix and the advertized movement matrix.
+    Geom::Affine advertized_move;
+    if (mode == SP_CLONE_COMPENSATION_PARALLEL) {
+        //clone_move = clone_move.inverse();
+        advertized_move.set_identity();
+    } else if (mode == SP_CLONE_COMPENSATION_UNMOVED) {
+        clone_move = clone_move.inverse() * m;
+        advertized_move = m;
+    } else {
+        g_assert_not_reached();
+    }
+
+    // Commit the compensation.
+    item->transform *= clone_move;
+    sp_item_write_transform(item, item->getRepr(), item->transform, &advertized_move);
+#else
+    (void)mp;
+    (void)original;
+#endif
+
+    self->sourceDirty = true;
+    item->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+}
+
+static void
+sp_usepath_delete_self(SPObject */*deleted*/, SPUsePath *offset)
+{
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    guint const mode = prefs->getInt("/options/cloneorphans/value", SP_CLONE_ORPHANS_UNLINK);
+
+    if (mode == SP_CLONE_ORPHANS_UNLINK) {
+        // leave it be. just forget about the source
+        offset->quit_listening();
+        offset->unlink();
+        if (offset->user_unlink)
+            offset->user_unlink(offset->owner);
+    } else if (mode == SP_CLONE_ORPHANS_DELETE) {
+        offset->owner->deleteObject();
+    }
+}
+
+static void
+sp_usepath_source_modified(SPObject */*iSource*/, guint /*flags*/, SPUsePath *offset)
+{
+    offset->sourceDirty = true;
+    offset->owner->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+}
+
+void SPUsePath::refresh_source()
+{
+    sourceDirty = false;
+
+    originalPath = nullptr;
+
+    SPObject *refobj = sourceObject;
+    if ( refobj == nullptr ) return;
+
+    if (auto shape = dynamic_cast<SPShape const *>(refobj)) {
+        originalPath = SPCurve::copy(shape->curve());
+        if (originalPath == nullptr) {
+            sourceDirty = true;
+        }
+    } else if (auto text = dynamic_cast<SPText const *>(refobj)) {
+        originalPath = text->getNormalizedBpath();
+    }
+}
+
+
+/*
+  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 :