Adding upstream version 1.3+ds.upstream/1.3+dsupstream

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

1 files changed, 738 insertions, 0 deletions

diff --git a/src/ui/widget/fill-style.cpp b/src/ui/widget/fill-style.cpp
new file mode 100644
index 0000000..124d6d8
--- /dev/null
+++ b/src/ui/widget/fill-style.cpp
@@ -0,0 +1,738 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/**
+ * @file
+ * Fill style widget.
+ */
+/* Authors:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *   Frank Felfe <innerspace@iname.com>
+ *   bulia byak <buliabyak@users.sf.net>
+ *   Jon A. Cruz <jon@joncruz.org>
+ *   Abhishek Sharma
+ *
+ * Copyright (C) 1999-2005 authors
+ * Copyright (C) 2001-2002 Ximian, Inc.
+ * Copyright (C) 2010 Jon A. Cruz
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#define noSP_FS_VERBOSE
+
+#include <glibmm/i18n.h>
+
+#include "desktop-style.h"
+#include "desktop.h"
+#include "document-undo.h"
+#include "fill-style.h"
+#include "gradient-chemistry.h"
+#include "inkscape.h"
+#include "selection.h"
+
+#include "actions/actions-tools.h"
+#include "object/sp-defs.h"
+#include "object/sp-linear-gradient.h"
+#include "object/sp-mesh-gradient.h"
+#include "object/sp-pattern.h"
+#include "object/sp-radial-gradient.h"
+#include "object/sp-text.h"
+#include "object/sp-stop.h"
+#include "object/sp-object.h"
+#include "ui/dialog/dialog-base.h"
+#include "style.h"
+#include "object/sp-use.h"
+#include "pattern-manipulation.h"
+#include "ui/icon-names.h"
+
+// These can be deleted once we sort out the libart dependence.
+
+#define ART_WIND_RULE_NONZERO 0
+
+/* Fill */
+
+namespace Inkscape {
+namespace UI {
+namespace Widget {
+
+FillNStroke::FillNStroke(FillOrStroke k)
+    : Gtk::Box(Gtk::ORIENTATION_VERTICAL)
+    , kind(k)
+    , subselChangedConn()
+    , eventContextConn()
+{
+    // Add and connect up the paint selector widget:
+    _psel = Gtk::manage(new UI::Widget::PaintSelector(kind));
+    _psel->show();
+    add(*_psel);
+    _psel->signal_mode_changed().connect(sigc::mem_fun(*this, &FillNStroke::paintModeChangeCB));
+    _psel->signal_dragged().connect(sigc::mem_fun(*this, &FillNStroke::dragFromPaint));
+    _psel->signal_changed().connect(sigc::mem_fun(*this, &FillNStroke::paintChangedCB));
+    _psel->signal_stop_selected().connect([=](SPStop* stop) {
+       if (_desktop) { _desktop->emit_gradient_stop_selected(this, stop); }
+    });
+    _psel->signal_edit_pattern().connect([=](){
+        if (_desktop) set_active_tool(_desktop, "Node");
+    });
+
+    if (kind == FILL) {
+        _psel->signal_fillrule_changed().connect(sigc::mem_fun(*this, &FillNStroke::setFillrule));
+    }
+
+    performUpdate();
+}
+
+FillNStroke::~FillNStroke()
+{
+    if (_drag_id) {
+        g_source_remove(_drag_id);
+        _drag_id = 0;
+    }
+
+    _psel = nullptr;
+    subselChangedConn.disconnect();
+    eventContextConn.disconnect();
+}
+
+/**
+ * On signal modified, invokes an update of the fill or stroke style paint object.
+ */
+void FillNStroke::selectionModifiedCB(guint flags)
+{
+    if (flags & SP_OBJECT_STYLE_MODIFIED_FLAG) {
+#ifdef SP_FS_VERBOSE
+        g_message("selectionModifiedCB(%d) on %p", flags, this);
+#endif
+        performUpdate();
+    }
+}
+
+void FillNStroke::setDesktop(SPDesktop *desktop)
+{
+    if (_desktop != desktop) {
+        if (_drag_id) {
+            g_source_remove(_drag_id);
+            _drag_id = 0;
+        }
+        if (_desktop) {
+            subselChangedConn.disconnect();
+            eventContextConn.disconnect();
+            stop_selected_connection.disconnect();
+        }
+        _desktop = desktop;
+        if (desktop && desktop->getSelection()) {
+            subselChangedConn = desktop->connect_text_cursor_moved([=](void* sender, Inkscape::UI::Tools::TextTool* tool) {
+                performUpdate();
+            });
+
+            eventContextConn = desktop->connectEventContextChanged(sigc::hide(sigc::bind(
+                sigc::mem_fun(*this, &FillNStroke::eventContextCB), (Inkscape::UI::Tools::ToolBase *)nullptr)));
+
+            stop_selected_connection = desktop->connect_gradient_stop_selected([=](void* sender, SPStop* stop){
+                if (sender != this) {
+                    performUpdate();
+                }
+            });
+        }
+        performUpdate();
+    }
+}
+
+/**
+ * Listen to this "change in tool" event, in case a subselection tool (such as Gradient or Node) selection
+ * is changed back to a selection tool - especially needed for selected gradient stops.
+ */
+void FillNStroke::eventContextCB(SPDesktop * /*desktop*/, Inkscape::UI::Tools::ToolBase * /*eventcontext*/)
+{
+    performUpdate();
+}
+
+/**
+ * Gets the active fill or stroke style property, then sets the appropriate
+ * color, alpha, gradient, pattern, etc. for the paint-selector.
+ *
+ * @param sel Selection to use, or NULL.
+ */
+void FillNStroke::performUpdate()
+{
+    if (_update || !_desktop) {
+        return;
+    }
+    auto *widg = get_parent()->get_parent()->get_parent()->get_parent(); 
+    auto dialogbase = dynamic_cast<Inkscape::UI::Dialog::DialogBase*>(widg);
+    if (dialogbase && !dialogbase->getShowing()) {
+        return;
+    }
+    if (_drag_id) {
+        // local change; do nothing, but reset the flag
+        g_source_remove(_drag_id);
+        _drag_id = 0;
+        return;
+    }
+
+    _update = true;
+
+    // create temporary style
+    SPStyle query(_desktop->doc());
+
+    // query style from desktop into it. This returns a result flag and fills query with the style of subselection, if
+    // any, or selection
+    const int property = kind == FILL ? QUERY_STYLE_PROPERTY_FILL : QUERY_STYLE_PROPERTY_STROKE;
+    int result = sp_desktop_query_style(_desktop, &query, property);
+    SPIPaint& paint = *query.getFillOrStroke(kind == FILL);
+    auto stop = cast<SPStop>(paint.getTag());
+    if (stop) {
+       // there's a stop selected, which is part of subselection, now query selection only to find selected gradient
+       if (auto selection = _desktop->getSelection()) {
+          std::vector<SPItem*> vec(selection->items().begin(), selection->items().end());
+          result = sp_desktop_query_style_from_list(vec, &query, property);
+       }
+    }
+    SPIPaint &targPaint = *query.getFillOrStroke(kind == FILL);
+    SPIScale24 &targOpacity = *(kind == FILL ? query.fill_opacity.upcast() : query.stroke_opacity.upcast());
+
+    switch (result) {
+        case QUERY_STYLE_NOTHING: {
+            /* No paint at all */
+            _psel->setMode(UI::Widget::PaintSelector::MODE_EMPTY);
+            break;
+        }
+
+        case QUERY_STYLE_SINGLE:
+        case QUERY_STYLE_MULTIPLE_AVERAGED: // TODO: treat this slightly differently, e.g. display "averaged" somewhere
+                                            // in paint selector
+        case QUERY_STYLE_MULTIPLE_SAME: {
+            auto pselmode = UI::Widget::PaintSelector::getModeForStyle(query, kind);
+            _psel->setMode(pselmode);
+
+            if (kind == FILL) {
+                _psel->setFillrule(query.fill_rule.computed == ART_WIND_RULE_NONZERO
+                                   ? UI::Widget::PaintSelector::FILLRULE_NONZERO
+                                   : UI::Widget::PaintSelector::FILLRULE_EVENODD);
+            }
+
+            if (targPaint.set && targPaint.isColor()) {
+                _psel->setColorAlpha(targPaint.value.color, SP_SCALE24_TO_FLOAT(targOpacity.value));
+            } else if (targPaint.set && targPaint.isPaintserver()) {
+                SPPaintServer* server = (kind == FILL) ? query.getFillPaintServer() : query.getStrokePaintServer();
+
+                if (server) {
+                    if (is<SPGradient>(server) && cast<SPGradient>(server)->getVector()->isSwatch()) {
+                        auto vector = cast<SPGradient>(server)->getVector();
+                        _psel->setSwatch(vector);
+                    } else if (is<SPLinearGradient>(server)) {
+                        auto vector = cast<SPGradient>(server)->getVector();
+                        auto lg = cast<SPLinearGradient>(server);
+                        _psel->setGradientLinear(vector, lg, stop);
+
+                        _psel->setGradientProperties(lg->getUnits(), lg->getSpread());
+                    } else if (is<SPRadialGradient>(server)) {
+                        auto vector = cast<SPGradient>(server)->getVector();
+                        auto rg = cast<SPRadialGradient>(server);
+                        _psel->setGradientRadial(vector, rg, stop);
+
+                        _psel->setGradientProperties(rg->getUnits(), rg->getSpread());
+#ifdef WITH_MESH
+                    } else if (is<SPMeshGradient>(server)) {
+                        auto array = cast<SPGradient>(server)->getArray();
+                        _psel->setGradientMesh(cast<SPMeshGradient>(array));
+                        _psel->updateMeshList(cast<SPMeshGradient>(array));
+#endif
+                    } else if (is<SPPattern>(server)) {
+                        _psel->updatePatternList(cast<SPPattern>(server));
+                    }
+                }
+            }
+            break;
+        }
+
+        case QUERY_STYLE_MULTIPLE_DIFFERENT: {
+            _psel->setMode(UI::Widget::PaintSelector::MODE_MULTIPLE);
+            break;
+        }
+    }
+
+    _update = false;
+}
+
+/**
+ * When the mode is changed, invoke a regular changed handler.
+ */
+void FillNStroke::paintModeChangeCB(UI::Widget::PaintSelector::Mode /*mode*/, bool switch_style)
+{
+#ifdef SP_FS_VERBOSE
+    g_message("paintModeChangeCB()");
+#endif
+    if (!_update) {
+        updateFromPaint(switch_style);
+    }
+}
+
+void FillNStroke::setFillrule(UI::Widget::PaintSelector::FillRule mode)
+{
+    if (!_update && _desktop) {
+        SPCSSAttr *css = sp_repr_css_attr_new();
+        sp_repr_css_set_property(css, "fill-rule",
+                                 (mode == UI::Widget::PaintSelector::FILLRULE_EVENODD) ? "evenodd" : "nonzero");
+
+        sp_desktop_set_style(_desktop, css);
+
+        sp_repr_css_attr_unref(css);
+        css = nullptr;
+
+        DocumentUndo::done(_desktop->doc(), _("Change fill rule"), INKSCAPE_ICON("dialog-fill-and-stroke"));
+    }
+}
+
+static gchar const *undo_F_label_1 = "fill:flatcolor:1";
+static gchar const *undo_F_label_2 = "fill:flatcolor:2";
+
+static gchar const *undo_S_label_1 = "stroke:flatcolor:1";
+static gchar const *undo_S_label_2 = "stroke:flatcolor:2";
+
+static gchar const *undo_F_label = undo_F_label_1;
+static gchar const *undo_S_label = undo_S_label_1;
+
+gboolean FillNStroke::dragDelayCB(gpointer data)
+{
+    gboolean keepGoing = TRUE;
+    if (data) {
+        FillNStroke *self = reinterpret_cast<FillNStroke *>(data);
+        if (!self->_update) {
+            if (self->_drag_id) {
+                g_source_remove(self->_drag_id);
+                self->_drag_id = 0;
+
+                self->dragFromPaint();
+                self->performUpdate();
+            }
+            keepGoing = FALSE;
+        }
+    } else {
+        keepGoing = FALSE;
+    }
+    return keepGoing;
+}
+
+/**
+ * This is called repeatedly while you are dragging a color slider, only for flat color
+ * modes. Previously it set the color in style but did not update the repr for efficiency, however
+ * this was flakey and didn't buy us almost anything. So now it does the same as _changed, except
+ * lumps all its changes for undo.
+ */
+void FillNStroke::dragFromPaint()
+{
+    if (!_desktop || _update) {
+        return;
+    }
+
+    guint32 when = gtk_get_current_event_time();
+
+    // Don't attempt too many updates per second.
+    // Assume a base 15.625ms resolution on the timer.
+    if (!_drag_id && _last_drag && when && ((when - _last_drag) < 32)) {
+        // local change, do not update from selection
+        _drag_id = g_timeout_add_full(G_PRIORITY_DEFAULT, 33, dragDelayCB, this, nullptr);
+    }
+
+    if (_drag_id) {
+        // previous local flag not cleared yet;
+        // this means dragged events come too fast, so we better skip this one to speed up display
+        // (it's safe to do this in any case)
+        return;
+    }
+    _last_drag = when;
+
+    _update = true;
+
+    switch (_psel->get_mode()) {
+        case UI::Widget::PaintSelector::MODE_SOLID_COLOR: {
+            // local change, do not update from selection
+            _drag_id = g_timeout_add_full(G_PRIORITY_DEFAULT, 100, dragDelayCB, this, nullptr);
+            _psel->setFlatColor(_desktop,
+                                (kind == FILL) ? "fill" : "stroke",
+                                (kind == FILL) ? "fill-opacity" : "stroke-opacity");
+            DocumentUndo::maybeDone(_desktop->doc(), (kind == FILL) ? undo_F_label : undo_S_label,
+                                    (kind == FILL) ? _("Set fill color") : _("Set stroke color"),
+                                    INKSCAPE_ICON("dialog-fill-and-stroke"));
+            break;
+        }
+
+        default:
+            g_warning("file %s: line %d: Paint %d should not emit 'dragged'", __FILE__, __LINE__, _psel->get_mode());
+            break;
+    }
+    _update = false;
+}
+
+void unset_recursive(const char *attribute, SPObject* object)
+{
+	object->removeAttribute(attribute);
+
+	for (auto& child: object->children)
+	{
+		if (is<SPUse> (object)) return;
+		unset_recursive(attribute, &child);
+	}
+}
+/**
+This is called (at least) when:
+1  paint selector mode is switched (e.g. flat color -> gradient)
+2  you finished dragging a gradient node and released mouse
+3  you changed a gradient selector parameter (e.g. spread)
+Must update repr.
+ */
+void FillNStroke::paintChangedCB()
+{
+#ifdef SP_FS_VERBOSE
+    g_message("paintChangedCB()");
+#endif
+    if (!_update) {
+        updateFromPaint();
+    }
+}
+
+void FillNStroke::updateFromPaint(bool switch_style)
+{
+    if (!_desktop) {
+        return;
+    }
+    _update = true;
+
+    auto document  = _desktop->getDocument();
+    auto selection = _desktop->getSelection();
+
+    std::vector<SPItem *> const items(selection->items().begin(), selection->items().end());
+
+    switch (_psel->get_mode()) {
+        case UI::Widget::PaintSelector::MODE_EMPTY:
+            // This should not happen.
+            g_warning("file %s: line %d: Paint %d should not emit 'changed'", __FILE__, __LINE__, _psel->get_mode());
+            break;
+        case UI::Widget::PaintSelector::MODE_MULTIPLE:
+            // This happens when you switch multiple objects with different gradients to flat color;
+            // nothing to do here.
+            break;
+
+        case UI::Widget::PaintSelector::MODE_NONE: {
+            SPCSSAttr *css = sp_repr_css_attr_new();
+            sp_repr_css_set_property(css, (kind == FILL) ? "fill" : "stroke", "none");
+
+            sp_desktop_set_style(_desktop, css, true, true, switch_style);
+
+            sp_repr_css_attr_unref(css);
+            css = nullptr;
+
+            DocumentUndo::done(document, (kind == FILL) ? _("Remove fill") : _("Remove stroke"), INKSCAPE_ICON("dialog-fill-and-stroke"));
+            break;
+        }
+
+        case UI::Widget::PaintSelector::MODE_SOLID_COLOR: {
+            _psel->setFlatColor(_desktop, (kind == FILL) ? "fill" : "stroke",
+                                (kind == FILL) ? "fill-opacity" : "stroke-opacity");
+            DocumentUndo::maybeDone(_desktop->getDocument(), (kind == FILL) ? undo_F_label : undo_S_label,
+                                    (kind == FILL) ? _("Set fill color") : _("Set stroke color"),
+                                    INKSCAPE_ICON("dialog-fill-and-stroke"));
+
+            // on release, toggle undo_label so that the next drag will not be lumped with this one
+            if (undo_F_label == undo_F_label_1) {
+                undo_F_label = undo_F_label_2;
+                undo_S_label = undo_S_label_2;
+            } else {
+                undo_F_label = undo_F_label_1;
+                undo_S_label = undo_S_label_1;
+            }
+
+            break;
+        }
+        
+        case UI::Widget::PaintSelector::MODE_GRADIENT_LINEAR:
+        case UI::Widget::PaintSelector::MODE_GRADIENT_RADIAL:
+        case UI::Widget::PaintSelector::MODE_SWATCH:
+            if (!items.empty()) {
+                SPGradientType const gradient_type =
+                    (_psel->get_mode() != UI::Widget::PaintSelector::MODE_GRADIENT_RADIAL ? SP_GRADIENT_TYPE_LINEAR
+                                                                                          : SP_GRADIENT_TYPE_RADIAL);
+                bool createSwatch = (_psel->get_mode() == UI::Widget::PaintSelector::MODE_SWATCH);
+
+                auto vector = _psel->getGradientVector();
+                if (!vector) {
+                    /* No vector in paint selector should mean that we just changed mode */
+                    SPStyle query(_desktop->doc());
+                    int result = objects_query_fillstroke(items, &query, kind == FILL);
+                    if (result == QUERY_STYLE_MULTIPLE_SAME) {
+                        SPIPaint &targPaint = *query.getFillOrStroke(kind == FILL);
+                        SPColor common;
+                        if (!targPaint.isColor()) {
+                            common = sp_desktop_get_color(_desktop, kind == FILL);
+                        } else {
+                            common = targPaint.value.color;
+                        }
+                        vector = sp_document_default_gradient_vector(document, common, 1.0, createSwatch);
+                    }
+                    if (vector)
+                        vector->setSwatch(createSwatch);
+
+                    for (auto item : items) {
+                        if (!vector) {
+                            auto gr = sp_gradient_vector_for_object(
+                                document, _desktop, item,
+                                (kind == FILL) ? Inkscape::FOR_FILL : Inkscape::FOR_STROKE, createSwatch);
+                            if (gr) {
+                                gr->setSwatch(createSwatch);
+                            }
+                            sp_item_set_gradient(item, gr, gradient_type,
+                                                 (kind == FILL) ? Inkscape::FOR_FILL : Inkscape::FOR_STROKE);
+                        } else {
+                            sp_item_set_gradient(item, vector, gradient_type,
+                                                 (kind == FILL) ? Inkscape::FOR_FILL : Inkscape::FOR_STROKE);
+                        }
+                    }
+                } else {
+                    // We have changed from another gradient type, or modified spread/units within
+                    // this gradient type.
+                    vector = sp_gradient_ensure_vector_normalized(vector);
+                    for (auto item : items) {
+                        SPGradient *gr = sp_item_set_gradient(
+                            item, vector, gradient_type, (kind == FILL) ? Inkscape::FOR_FILL : Inkscape::FOR_STROKE);
+                        _psel->pushAttrsToGradient(gr);
+                    }
+                }
+
+                for (auto item : items) {
+                    // fill and stroke opacity should never be set on gradients since in our user interface
+                    // these are controlled by the gradient stops themselves.
+                    item->style->clear(kind == FILL ? SPAttr::FILL_OPACITY : SPAttr::STROKE_OPACITY);
+                }
+                DocumentUndo::done(document, (kind == FILL) ? _("Set gradient on fill") : _("Set gradient on stroke"), INKSCAPE_ICON("dialog-fill-and-stroke"));
+            }
+            break;
+
+#ifdef WITH_MESH
+        case UI::Widget::PaintSelector::MODE_GRADIENT_MESH:
+
+            if (!items.empty()) {
+                SPCSSAttr *css = nullptr;
+                if (kind == FILL) {
+                    // HACK: reset fill-opacity - that 0.75 is annoying; BUT remove this when we have an opacity slider
+                    // for all tabs
+                    css = sp_repr_css_attr_new();
+                    sp_repr_css_set_property(css, "fill-opacity", "1.0");
+                }
+
+                Inkscape::XML::Document *xml_doc = document->getReprDoc();
+                SPDefs *defs = document->getDefs();
+
+                auto mesh = _psel->getMeshGradient();
+
+                for (auto item : items) {
+
+                    // FIXME: see above
+                    if (kind == FILL) {
+                        sp_repr_css_change_recursive(item->getRepr(), css, "style");
+                    }
+
+                    // Check if object already has mesh.
+                    bool has_mesh = false;
+                    SPStyle *style = item->style;
+                    if (style) {
+                        SPPaintServer *server =
+                            (kind == FILL) ? style->getFillPaintServer() : style->getStrokePaintServer();
+                        if (server && is<SPMeshGradient>(server))
+                            has_mesh = true;
+                    }
+
+                    if (!mesh || !has_mesh) {
+                        // No mesh in document or object does not already have mesh ->
+                        // Create new mesh.
+
+                        // Create mesh element
+                        Inkscape::XML::Node *repr = xml_doc->createElement("svg:meshgradient");
+
+                        // privates are garbage-collectable
+                        repr->setAttribute("inkscape:collect", "always");
+
+                        // Attach to document
+                        defs->getRepr()->appendChild(repr);
+                        Inkscape::GC::release(repr);
+
+                        // Get corresponding object
+                        SPMeshGradient *mg = static_cast<SPMeshGradient *>(document->getObjectByRepr(repr));
+                        mg->array.create(mg, item, (kind == FILL) ? item->geometricBounds() : item->visualBounds());
+
+                        bool isText = is<SPText>(item);
+                        sp_style_set_property_url(item, ((kind == FILL) ? "fill" : "stroke"), mg, isText);
+
+                        // (*i)->requestModified(SP_OBJECT_MODIFIED_FLAG|SP_OBJECT_STYLE_MODIFIED_FLAG);
+
+                    } else {
+                        // Using found mesh
+
+                        // Duplicate
+                        Inkscape::XML::Node *mesh_repr = mesh->getRepr();
+                        Inkscape::XML::Node *copy_repr = mesh_repr->duplicate(xml_doc);
+
+                        // privates are garbage-collectable
+                        copy_repr->setAttribute("inkscape:collect", "always");
+
+                        // Attach to document
+                        defs->getRepr()->appendChild(copy_repr);
+                        Inkscape::GC::release(copy_repr);
+
+                        // Get corresponding object
+                        SPMeshGradient *mg = static_cast<SPMeshGradient *>(document->getObjectByRepr(copy_repr));
+                        // std::cout << "  " << (mg->getId()?mg->getId():"null") << std::endl;
+                        mg->array.read(mg);
+
+                        Geom::OptRect item_bbox = (kind == FILL) ? item->geometricBounds() : item->visualBounds();
+                        mg->array.fill_box(item_bbox);
+
+                        bool isText = is<SPText>(item);
+                        sp_style_set_property_url(item, ((kind == FILL) ? "fill" : "stroke"), mg, isText);
+                    }
+                }
+
+                if (css) {
+                    sp_repr_css_attr_unref(css);
+                    css = nullptr;
+                }
+
+                DocumentUndo::done(document, (kind == FILL) ? _("Set mesh on fill") : _("Set mesh on stroke"), INKSCAPE_ICON("dialog-fill-and-stroke"));
+            }
+            break;
+#endif
+
+        case UI::Widget::PaintSelector::MODE_PATTERN:
+
+            if (!items.empty()) {
+
+                auto pattern = _psel->getPattern();
+                if (!pattern) {
+                    /* No Pattern in paint selector should mean that we just
+                     * changed mode - don't do jack.
+                     */
+                } else {
+                    auto link_pattern = pattern;
+                    auto root_pattern = pattern->rootPattern();
+                    if (auto color = _psel->get_pattern_color()) {
+                        sp_pattern_set_color(root_pattern, color.value());
+                    }
+                    // pattern name is applied to the root
+                    root_pattern->setAttribute("inkscape:label", _psel->get_pattern_label().c_str());
+                    // remaining settings apply to link pattern
+                    if (link_pattern != root_pattern) {
+                        auto transform = _psel->get_pattern_transform();
+                        sp_pattern_set_transform(link_pattern, transform);
+                        auto offset = _psel->get_pattern_offset();
+                        sp_pattern_set_offset(link_pattern, offset);
+                        auto uniform = _psel->is_pattern_scale_uniform();
+                        sp_pattern_set_uniform_scale(link_pattern, uniform);
+                        // gap requires both patterns, but they are only created later by calling "adjust_pattern" below
+                        // it is OK to ignore it for now, during initial creation gap is 0,0
+                        auto gap = _psel->get_pattern_gap();
+                        sp_pattern_set_gap(link_pattern, gap);
+                    }
+
+                    Inkscape::XML::Node *patrepr = root_pattern->getRepr();
+                    SPCSSAttr *css = sp_repr_css_attr_new();
+                    gchar *urltext = g_strdup_printf("url(#%s)", patrepr->attribute("id"));
+                    sp_repr_css_set_property(css, (kind == FILL) ? "fill" : "stroke", urltext);
+
+                    // HACK: reset fill-opacity - that 0.75 is annoying; BUT remove this when we have an opacity slider
+                    // for all tabs
+                    if (kind == FILL) {
+                        sp_repr_css_set_property(css, "fill-opacity", "1.0");
+                    }
+
+                    // cannot just call sp_desktop_set_style, because we don't want to touch those
+                    // objects who already have the same root pattern but through a different href
+                    // chain. FIXME: move this to a sp_item_set_pattern
+                    for (auto item : items) {
+                        Inkscape::XML::Node *selrepr = item->getRepr();
+                        if ((kind == STROKE) && !selrepr) {
+                            continue;
+                        }
+                        SPObject *selobj = item;
+
+                        SPStyle *style = selobj->style;
+                        if (style && ((kind == FILL) ? style->fill.isPaintserver() : style->stroke.isPaintserver())) {
+                            SPPaintServer *server = (kind == FILL) ? selobj->style->getFillPaintServer()
+                                                                   : selobj->style->getStrokePaintServer();
+                            if (is<SPPattern>(server) && cast<SPPattern>(server)->rootPattern() == root_pattern)
+                                // only if this object's pattern is not rooted in our selected pattern, apply
+                                continue;
+                        }
+
+                        if (kind == FILL) {
+                            sp_desktop_apply_css_recursive(selobj, css, true);
+                        } else {
+                            sp_repr_css_change_recursive(selrepr, css, "style");
+                        }
+
+                        // create link to pattern right away, without waiting for object to be moved;
+                        // otherwise pattern editor may end up modifying pattern shared by different objects
+                        item->adjust_pattern(Geom::Affine());
+                    }
+
+                    sp_repr_css_attr_unref(css);
+                    css = nullptr;
+                    g_free(urltext);
+                } // end if
+
+                DocumentUndo::done(document, (kind == FILL) ? _("Set pattern on fill") : _("Set pattern on stroke"), INKSCAPE_ICON("dialog-fill-and-stroke"));
+            } // end if
+
+            break;
+
+        case UI::Widget::PaintSelector::MODE_UNSET:
+            if (!items.empty()) {
+                for (auto item: items) {
+                    if (item) {
+                        unset_recursive((kind == FILL) ? "fill" : "stroke", item);
+                    }
+                }
+                SPCSSAttr *css = sp_repr_css_attr_new();
+                if (kind == FILL) {
+                    sp_repr_css_unset_property(css, "fill");    
+                } else {
+                    sp_repr_css_unset_property(css, "stroke");
+                    sp_repr_css_unset_property(css, "stroke-opacity");
+                    sp_repr_css_unset_property(css, "stroke-width");
+                    sp_repr_css_unset_property(css, "stroke-miterlimit");
+                    sp_repr_css_unset_property(css, "stroke-linejoin");
+                    sp_repr_css_unset_property(css, "stroke-linecap");
+                    sp_repr_css_unset_property(css, "stroke-dashoffset");
+                    sp_repr_css_unset_property(css, "stroke-dasharray");
+                }
+
+                sp_desktop_set_style(_desktop, css);
+                sp_repr_css_attr_unref(css);
+                css = nullptr;
+
+                DocumentUndo::done(document,  (kind == FILL) ? _("Unset fill") : _("Unset stroke"), INKSCAPE_ICON("dialog-fill-and-stroke"));
+            }
+            break;
+
+        default:
+            g_warning("file %s: line %d: Paint selector should not be in "
+                      "mode %d",
+                      __FILE__, __LINE__, _psel->get_mode());
+            break;
+    }
+
+    _update = false;
+}
+
+} // namespace Widget
+} // namespace UI
+} // 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:fileencoding=utf-8:textwidth=99 :