1 files changed, 612 insertions, 0 deletions

diff --git a/src/ui/widget/gradient-selector.cpp b/src/ui/widget/gradient-selector.cpp
new file mode 100644
index 0000000..e6bfa7e
--- /dev/null
+++ b/src/ui/widget/gradient-selector.cpp
@@ -0,0 +1,612 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Gradient vector widget
+ *
+ * Authors:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *   bulia byak <buliabyak@users.sf.net>
+ *   Jon A. Cruz <jon@joncruz.org>
+ *
+ * Copyright (C) 2001-2002 Lauris Kaplinski
+ * Copyright (C) 2001 Ximian, Inc.
+ * Copyright (C) 2010 Jon A. Cruz
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <glibmm/i18n.h>
+#include <gtkmm/treeview.h>
+#include <vector>
+
+#include "document-undo.h"
+#include "document.h"
+#include "gradient-chemistry.h"
+#include "id-clash.h"
+#include "inkscape.h"
+#include "preferences.h"
+
+#include "object/sp-defs.h"
+#include "style.h"
+
+#include "actions/actions-tools.h" // Invoke gradient tool
+#include "ui/icon-loader.h"
+#include "ui/icon-names.h"
+#include "ui/widget/gradient-vector-selector.h"
+
+namespace Inkscape {
+namespace UI {
+namespace Widget {
+
+void GradientSelector::style_button(Gtk::Button *btn, char const *iconName)
+{
+    GtkWidget *child = sp_get_icon_image(iconName, GTK_ICON_SIZE_SMALL_TOOLBAR);
+    gtk_widget_show(child);
+    btn->add(*manage(Glib::wrap(child)));
+    btn->set_relief(Gtk::RELIEF_NONE);
+}
+
+GradientSelector::GradientSelector()
+    : _blocked(false)
+    , _mode(MODE_LINEAR)
+    , _gradientUnits(SP_GRADIENT_UNITS_USERSPACEONUSE)
+    , _gradientSpread(SP_GRADIENT_SPREAD_PAD)
+{
+    set_orientation(Gtk::ORIENTATION_VERTICAL);
+
+    /* Vectors */
+    _vectors = Gtk::manage(new GradientVectorSelector(nullptr, nullptr));
+    _store = _vectors->get_store();
+    _columns = _vectors->get_columns();
+
+    _treeview = Gtk::manage(new Gtk::TreeView());
+    _treeview->set_model(_store);
+    _treeview->set_headers_clickable(true);
+    _treeview->set_search_column(1);
+    _treeview->set_vexpand();
+    _icon_renderer = Gtk::manage(new Gtk::CellRendererPixbuf());
+    _text_renderer = Gtk::manage(new Gtk::CellRendererText());
+
+    _treeview->append_column(_("Gradient"), *_icon_renderer);
+    auto icon_column = _treeview->get_column(0);
+    icon_column->add_attribute(_icon_renderer->property_pixbuf(), _columns->pixbuf);
+    icon_column->set_sort_column(_columns->color);
+    icon_column->set_clickable(true);
+
+    _treeview->append_column(_("Name"), *_text_renderer);
+    auto name_column = _treeview->get_column(1);
+    _text_renderer->property_editable() = true;
+    name_column->add_attribute(_text_renderer->property_text(), _columns->name);
+    name_column->set_min_width(180);
+    name_column->set_clickable(true);
+    name_column->set_resizable(true);
+
+    _treeview->append_column("#", _columns->refcount);
+    auto count_column = _treeview->get_column(2);
+    count_column->set_clickable(true);
+    count_column->set_resizable(true);
+
+    _treeview->signal_key_press_event().connect(sigc::mem_fun(this, &GradientSelector::onKeyPressEvent), false);
+
+    _treeview->show();
+
+    icon_column->signal_clicked().connect(sigc::mem_fun(this, &GradientSelector::onTreeColorColClick));
+    name_column->signal_clicked().connect(sigc::mem_fun(this, &GradientSelector::onTreeNameColClick));
+    count_column->signal_clicked().connect(sigc::mem_fun(this, &GradientSelector::onTreeCountColClick));
+
+    auto tree_select_connection = _treeview->get_selection()->signal_changed().connect(sigc::mem_fun(this, &GradientSelector::onTreeSelection));
+    _vectors->set_tree_select_connection(tree_select_connection);
+    _text_renderer->signal_edited().connect(sigc::mem_fun(this, &GradientSelector::onGradientRename));
+
+    _scrolled_window = Gtk::manage(new Gtk::ScrolledWindow());
+    _scrolled_window->add(*_treeview);
+    _scrolled_window->set_policy(Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC);
+    _scrolled_window->set_shadow_type(Gtk::SHADOW_IN);
+    _scrolled_window->set_size_request(0, 180);
+    _scrolled_window->set_hexpand();
+    _scrolled_window->show();
+
+    pack_start(*_scrolled_window, true, true, 4);
+
+
+    /* Create box for buttons */
+    auto hb = Gtk::manage(new Gtk::Box(Gtk::ORIENTATION_HORIZONTAL, 0));
+    hb->set_homogeneous(false);
+    pack_start(*hb, false, false, 0);
+
+    _add = Gtk::manage(new Gtk::Button());
+    style_button(_add, INKSCAPE_ICON("list-add"));
+
+    _nonsolid.push_back(_add);
+    hb->pack_start(*_add, false, false, 0);
+
+    _add->signal_clicked().connect(sigc::mem_fun(this, &GradientSelector::add_vector_clicked));
+    _add->set_sensitive(false);
+    _add->set_relief(Gtk::RELIEF_NONE);
+    _add->set_tooltip_text(_("Create a duplicate gradient"));
+
+    _del2 = Gtk::manage(new Gtk::Button());
+    style_button(_del2, INKSCAPE_ICON("list-remove"));
+
+    _nonsolid.push_back(_del2);
+    hb->pack_start(*_del2, false, false, 0);
+    _del2->signal_clicked().connect(sigc::mem_fun(this, &GradientSelector::delete_vector_clicked_2));
+    _del2->set_sensitive(false);
+    _del2->set_relief(Gtk::RELIEF_NONE);
+    _del2->set_tooltip_text(_("Delete unused gradient"));
+
+    // The only use of this button is hidden!
+    _edit = Gtk::manage(new Gtk::Button());
+    style_button(_edit, INKSCAPE_ICON("edit"));
+
+    _nonsolid.push_back(_edit);
+    hb->pack_start(*_edit, false, false, 0);
+    _edit->signal_clicked().connect(sigc::mem_fun(this, &GradientSelector::edit_vector_clicked));
+    _edit->set_sensitive(false);
+    _edit->set_relief(Gtk::RELIEF_NONE);
+    _edit->set_tooltip_text(_("Edit gradient"));
+    _edit->set_no_show_all();
+
+    _del = Gtk::manage(new Gtk::Button());
+    style_button(_del, INKSCAPE_ICON("list-remove"));
+
+    _swatch_widgets.push_back(_del);
+    hb->pack_start(*_del, false, false, 0);
+    _del->signal_clicked().connect(sigc::mem_fun(this, &GradientSelector::delete_vector_clicked));
+    _del->set_sensitive(false);
+    _del->set_relief(Gtk::RELIEF_NONE);
+    _del->set_tooltip_text(_("Delete swatch"));
+
+    hb->show_all();
+}
+
+void GradientSelector::setSpread(SPGradientSpread spread)
+{
+    _gradientSpread = spread;
+    // gtk_combo_box_set_active (GTK_COMBO_BOX(this->spread), gradientSpread);
+}
+
+void GradientSelector::setMode(SelectorMode mode)
+{
+    if (mode != _mode) {
+        _mode = mode;
+        if (mode == MODE_SWATCH) {
+            for (auto &it : _nonsolid) {
+                it->hide();
+            }
+            for (auto &swatch_widget : _swatch_widgets) {
+                swatch_widget->show_all();
+            }
+
+            auto icon_column = _treeview->get_column(0);
+            icon_column->set_title(_("Swatch"));
+
+            _vectors->setSwatched();
+        } else {
+            for (auto &it : _nonsolid) {
+                it->show_all();
+            }
+            for (auto &swatch_widget : _swatch_widgets) {
+                swatch_widget->hide();
+            }
+            auto icon_column = _treeview->get_column(0);
+            icon_column->set_title(_("Gradient"));
+        }
+    }
+}
+
+void GradientSelector::setUnits(SPGradientUnits units) { _gradientUnits = units; }
+
+SPGradientUnits GradientSelector::getUnits() { return _gradientUnits; }
+
+SPGradientSpread GradientSelector::getSpread() { return _gradientSpread; }
+
+void GradientSelector::onGradientRename(const Glib::ustring &path_string, const Glib::ustring &new_text)
+{
+    Gtk::TreePath path(path_string);
+    auto iter = _store->get_iter(path);
+
+    if (iter) {
+        Gtk::TreeModel::Row row = *iter;
+        if (row) {
+            SPObject *obj = row[_columns->data];
+            if (obj) {
+                row[_columns->name] = gr_prepare_label(obj);
+                if (!new_text.empty() && new_text != row[_columns->name]) {
+                    rename_id(obj, new_text);
+                    Inkscape::DocumentUndo::done(obj->document, _("Rename gradient"), INKSCAPE_ICON("color-gradient"));
+                }
+            }
+        }
+    }
+}
+
+void GradientSelector::onTreeColorColClick()
+{
+    auto column = _treeview->get_column(0);
+    column->set_sort_column(_columns->color);
+}
+
+void GradientSelector::onTreeNameColClick()
+{
+    auto column = _treeview->get_column(1);
+    column->set_sort_column(_columns->name);
+}
+
+
+void GradientSelector::onTreeCountColClick()
+{
+    auto column = _treeview->get_column(2);
+    column->set_sort_column(_columns->refcount);
+}
+
+void GradientSelector::moveSelection(int amount, bool down, bool toEnd)
+{
+    auto select = _treeview->get_selection();
+    auto iter = select->get_selected();
+
+    if (amount < 0) {
+        down = !down;
+        amount = -amount;
+    }
+
+    auto canary = iter;
+    if (down) {
+        ++canary;
+    } else {
+        --canary;
+    }
+    while (canary && (toEnd || amount > 0)) {
+        --amount;
+        if (down) {
+            ++canary;
+            ++iter;
+        } else {
+            --canary;
+            --iter;
+        }
+    }
+
+    select->select(iter);
+    _treeview->scroll_to_row(_store->get_path(iter), 0.5);
+}
+
+bool GradientSelector::onKeyPressEvent(GdkEventKey *event)
+{
+    bool consume = false;
+    auto display = Gdk::Display::get_default();
+    auto keymap = display->get_keymap();
+    guint key = 0;
+    gdk_keymap_translate_keyboard_state(keymap, event->hardware_keycode, static_cast<GdkModifierType>(event->state), 0,
+                                        &key, 0, 0, 0);
+
+    switch (key) {
+        case GDK_KEY_Up:
+        case GDK_KEY_KP_Up: {
+            moveSelection(-1);
+            consume = true;
+            break;
+        }
+        case GDK_KEY_Down:
+        case GDK_KEY_KP_Down: {
+            moveSelection(1);
+            consume = true;
+            break;
+        }
+        case GDK_KEY_Page_Up:
+        case GDK_KEY_KP_Page_Up: {
+            moveSelection(-5);
+            consume = true;
+            break;
+        }
+
+        case GDK_KEY_Page_Down:
+        case GDK_KEY_KP_Page_Down: {
+            moveSelection(5);
+            consume = true;
+            break;
+        }
+
+        case GDK_KEY_End:
+        case GDK_KEY_KP_End: {
+            moveSelection(0, true, true);
+            consume = true;
+            break;
+        }
+
+        case GDK_KEY_Home:
+        case GDK_KEY_KP_Home: {
+            moveSelection(0, false, true);
+            consume = true;
+            break;
+        }
+    }
+    return consume;
+}
+
+void GradientSelector::onTreeSelection()
+{
+    if (!_treeview) {
+        return;
+    }
+
+    if (_blocked) {
+        return;
+    }
+
+    if (!_treeview->has_focus()) {
+        /* Workaround for GTK bug on Windows/OS X
+         * When the treeview initially doesn't have focus and is clicked
+         * sometimes get_selection()->signal_changed() has the wrong selection
+         */
+        _treeview->grab_focus();
+    }
+
+    const auto sel = _treeview->get_selection();
+    if (!sel) {
+        return;
+    }
+
+    SPGradient *obj = nullptr;
+    /* Single selection */
+    auto iter = sel->get_selected();
+    if (iter) {
+        Gtk::TreeModel::Row row = *iter;
+        obj = row[_columns->data];
+    }
+
+    if (obj) {
+        vector_set(obj);
+    }
+
+    check_del_button();
+}
+
+void GradientSelector::check_del_button() {
+    const auto sel = _treeview->get_selection();
+    if (!sel) {
+        return;
+    }
+
+    SPGradient *obj = nullptr;
+    /* Single selection */
+    auto iter = sel->get_selected();
+    if (iter) {
+        Gtk::TreeModel::Row row = *iter;
+        obj = row[_columns->data];
+    }
+    if (_del2) {
+        _del2->set_sensitive(obj && sp_get_gradient_refcount(obj->document, obj) < 2 && _store->children().size() > 1);
+    }
+}
+
+bool GradientSelector::_checkForSelected(const Gtk::TreePath &path, const Gtk::TreeIter &iter, SPGradient *vector)
+{
+    bool found = false;
+
+    Gtk::TreeModel::Row row = *iter;
+    if (vector == row[_columns->data]) {
+        _treeview->scroll_to_row(path, 0.5);
+        auto select = _treeview->get_selection();
+        bool wasBlocked = _blocked;
+        _blocked = true;
+        select->select(iter);
+        _blocked = wasBlocked;
+        found = true;
+    }
+
+    return found;
+}
+
+void GradientSelector::selectGradientInTree(SPGradient *vector)
+{
+    _store->foreach (sigc::bind<SPGradient *>(sigc::mem_fun(*this, &GradientSelector::_checkForSelected), vector));
+}
+
+void GradientSelector::setVector(SPDocument *doc, SPGradient *vector)
+{
+    g_return_if_fail(!vector || SP_IS_GRADIENT(vector));
+    g_return_if_fail(!vector || (vector->document == doc));
+
+    if (vector && !vector->hasStops()) {
+        return;
+    }
+
+    _vectors->set_gradient(doc, vector);
+
+    selectGradientInTree(vector);
+
+    if (vector) {
+        if ((_mode == MODE_SWATCH) && vector->isSwatch()) {
+            if (vector->isSolid()) {
+                for (auto &it : _nonsolid) {
+                    it->hide();
+                }
+            } else {
+                for (auto &it : _nonsolid) {
+                    it->show_all();
+                }
+            }
+        } else if (_mode != MODE_SWATCH) {
+
+            for (auto &swatch_widget : _swatch_widgets) {
+                swatch_widget->hide();
+            }
+            for (auto &it : _nonsolid) {
+                it->show_all();
+            }
+        }
+
+        if (_edit) {
+            _edit->set_sensitive(true);
+        }
+        if (_add) {
+            _add->set_sensitive(true);
+        }
+        if (_del) {
+            _del->set_sensitive(true);
+        }
+        check_del_button();
+    } else {
+        if (_edit) {
+            _edit->set_sensitive(false);
+        }
+        if (_add) {
+            _add->set_sensitive(doc != nullptr);
+        }
+        if (_del) {
+            _del->set_sensitive(false);
+        }
+        if (_del2) {
+            _del2->set_sensitive(false);
+        }
+    }
+}
+
+SPGradient *GradientSelector::getVector()
+{
+    return _vectors->get_gradient();
+}
+
+
+void GradientSelector::vector_set(SPGradient *gr)
+{
+    if (!_blocked) {
+        _blocked = true;
+        gr = sp_gradient_ensure_vector_normalized(gr);
+        setVector((gr) ? gr->document : nullptr, gr);
+        _signal_changed.emit(gr);
+        _blocked = false;
+    }
+}
+
+void GradientSelector::delete_vector_clicked_2() {
+    const auto selection = _treeview->get_selection();
+    if (!selection) {
+        return;
+    }
+
+    SPGradient *obj = nullptr;
+    /* Single selection */
+    Gtk::TreeModel::iterator iter = selection->get_selected();
+    if (iter) {
+        Gtk::TreeModel::Row row = *iter;
+        obj = row[_columns->data];
+    }
+
+    if (obj) {
+        if (auto repr = obj->getRepr()) {
+            repr->setAttribute("inkscape:collect", "always");
+
+            auto move = iter;
+            --move;
+            if (!move) {
+                move = iter;
+                ++move;
+            }
+            if (move) {
+                selection->select(move);
+                _treeview->scroll_to_row(_store->get_path(move), 0.5);
+            }
+        }
+    }
+}
+
+void GradientSelector::delete_vector_clicked()
+{
+    const auto selection = _treeview->get_selection();
+    if (!selection) {
+        return;
+    }
+
+    SPGradient *obj = nullptr;
+    /* Single selection */
+    Gtk::TreeModel::iterator iter = selection->get_selected();
+    if (iter) {
+        Gtk::TreeModel::Row row = *iter;
+        obj = row[_columns->data];
+    }
+
+    if (obj) {
+        std::string id = obj->getId();
+        sp_gradient_unset_swatch(SP_ACTIVE_DESKTOP, id);
+    }
+}
+
+void GradientSelector::edit_vector_clicked()
+{
+    // Invoke the gradient tool.... never actually called as button is hidden in only use!
+    set_active_tool(SP_ACTIVE_DESKTOP, "Gradient");
+}
+
+void GradientSelector::add_vector_clicked()
+{
+    auto doc = _vectors->get_document();
+
+    if (!doc)
+        return;
+
+    auto gr = _vectors->get_gradient();
+    Inkscape::XML::Document *xml_doc = doc->getReprDoc();
+
+    Inkscape::XML::Node *repr = nullptr;
+
+    if (gr) {
+        gr->getRepr()->removeAttribute("inkscape:collect");
+        repr = gr->getRepr()->duplicate(xml_doc);
+        // Rename the new gradients id to be similar to the cloned gradients
+        auto new_id = generate_unique_id(doc, gr->getId());
+        gr->setAttribute("id", new_id.c_str());
+        doc->getDefs()->getRepr()->addChild(repr, nullptr);
+    } else {
+        repr = xml_doc->createElement("svg:linearGradient");
+        Inkscape::XML::Node *stop = xml_doc->createElement("svg:stop");
+        stop->setAttribute("offset", "0");
+        stop->setAttribute("style", "stop-color:#000;stop-opacity:1;");
+        repr->appendChild(stop);
+        Inkscape::GC::release(stop);
+        stop = xml_doc->createElement("svg:stop");
+        stop->setAttribute("offset", "1");
+        stop->setAttribute("style", "stop-color:#fff;stop-opacity:1;");
+        repr->appendChild(stop);
+        Inkscape::GC::release(stop);
+        doc->getDefs()->getRepr()->addChild(repr, nullptr);
+        gr = SP_GRADIENT(doc->getObjectByRepr(repr));
+    }
+
+    _vectors->set_gradient(doc, gr);
+
+    selectGradientInTree(gr);
+
+    // assign gradient to selection
+    vector_set(gr);
+
+    Inkscape::GC::release(repr);
+}
+
+void GradientSelector::show_edit_button(bool show) {
+    if (show) _edit->show(); else _edit->hide();
+}
+
+void GradientSelector::set_name_col_size(int min_width) {
+    auto name_column = _treeview->get_column(1);
+    name_column->set_min_width(min_width);
+}
+
+void GradientSelector::set_gradient_size(int width, int height) {
+    _vectors->set_pixmap_size(width, height);
+}
+
+} // 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 :