Adding upstream version 1.2.2.upstream/1.2.2upstream

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

1 files changed, 198 insertions, 0 deletions

diff --git a/src/ui/dialog/selectorsdialog.h b/src/ui/dialog/selectorsdialog.h
new file mode 100644
index 0000000..1e14cfe
--- /dev/null
+++ b/src/ui/dialog/selectorsdialog.h
@@ -0,0 +1,198 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/** @file
+ * @brief A dialog for CSS selectors
+ */
+/* Authors:
+ *   Kamalpreet Kaur Grewal
+ *   Tavmjong Bah
+ *
+ * Copyright (C) Kamalpreet Kaur Grewal 2016 <grewalkamal005@gmail.com>
+ * Copyright (C) Tavmjong Bah 2017 <tavmjong@free.fr>
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#ifndef SELECTORSDIALOG_H
+#define SELECTORSDIALOG_H
+
+#include <gtkmm/dialog.h>
+#include <gtkmm/paned.h>
+#include <gtkmm/radiobutton.h>
+#include <gtkmm/scrolledwindow.h>
+#include <gtkmm/switch.h>
+#include <gtkmm/treemodelfilter.h>
+#include <gtkmm/treeselection.h>
+#include <gtkmm/treestore.h>
+#include <gtkmm/treeview.h>
+#include <memory>
+#include <vector>
+
+#include "ui/dialog/dialog-base.h"
+#include "ui/dialog/styledialog.h"
+#include "xml/helper-observer.h"
+
+namespace Inkscape {
+namespace UI {
+namespace Dialog {
+
+/**
+ * @brief The SelectorsDialog class
+ * A list of CSS selectors will show up in this dialog. This dialog allows one to
+ * add and delete selectors. Elements can be added to and removed from the selectors
+ * in the dialog. Selection of any selector row selects the matching  objects in
+ * the drawing and vice-versa. (Only simple selectors supported for now.)
+ *
+ * This class must keep two things in sync:
+ *   1. The text node of the style element.
+ *   2. The Gtk::TreeModel.
+ */
+class SelectorsDialog : public DialogBase
+{
+public:
+    // No default constructor, noncopyable, nonassignable
+    SelectorsDialog();
+    ~SelectorsDialog() override;
+    SelectorsDialog(SelectorsDialog const &d) = delete;
+    SelectorsDialog operator=(SelectorsDialog const &d) = delete;
+    static SelectorsDialog &getInstance() { return *new SelectorsDialog(); }
+
+    void update() override;
+    void desktopReplaced() override;
+    void documentReplaced() override;
+    void selectionChanged(Selection *selection) override;
+
+  private:
+    // Monitor <style> element for changes.
+    class NodeObserver;
+
+    void removeObservers();
+
+    // Monitor all objects for addition/removal/attribute change
+    class NodeWatcher;
+    enum SelectorType { CLASS, ID, TAG };
+    void _nodeAdded(   Inkscape::XML::Node &repr );
+    void _nodeRemoved( Inkscape::XML::Node &repr );
+    void _nodeChanged( Inkscape::XML::Node &repr );
+    // Data structure
+    enum coltype { OBJECT, SELECTOR, OTHER };
+    class ModelColumns : public Gtk::TreeModel::ColumnRecord {
+    public:
+        ModelColumns() {
+            add(_colSelector);
+            add(_colExpand);
+            add(_colType);
+            add(_colObj);
+            add(_colProperties);
+            add(_colVisible);
+            add(_colSelected);
+        }
+        Gtk::TreeModelColumn<Glib::ustring> _colSelector;       // Selector or matching object id.
+        Gtk::TreeModelColumn<bool> _colExpand;                  // Open/Close store row.
+        Gtk::TreeModelColumn<gint> _colType;                    // Selector row or child object row.
+        Gtk::TreeModelColumn<SPObject *> _colObj;               // Matching object (if any).
+        Gtk::TreeModelColumn<Glib::ustring> _colProperties;     // List of properties.
+        Gtk::TreeModelColumn<bool> _colVisible;                 // Make visible or not.
+        Gtk::TreeModelColumn<gint> _colSelected;                // Make selected.
+    };
+    ModelColumns _mColumns;
+
+    // Override Gtk::TreeStore to control drag-n-drop (only allow dragging and dropping of selectors).
+    // See: https://developer.gnome.org/gtkmm-tutorial/stable/sec-treeview-examples.html.en
+    //
+    // TreeStore implements simple drag and drop (DND) but there appears no way to know when a DND
+    // has been completed (other than doing the whole DND ourselves). As a hack, we use
+    // on_row_deleted to trigger write of style element.
+    class TreeStore : public Gtk::TreeStore {
+    protected:
+        TreeStore();
+        bool row_draggable_vfunc(const Gtk::TreeModel::Path& path) const override;
+        bool row_drop_possible_vfunc(const Gtk::TreeModel::Path& path,
+                                     const Gtk::SelectionData& selection_data) const override;
+        void on_row_deleted(const TreeModel::Path& path) override;
+
+    public:
+      static Glib::RefPtr<SelectorsDialog::TreeStore> create(SelectorsDialog *styledialog);
+
+    private:
+      SelectorsDialog *_selectorsdialog;
+    };
+
+    // TreeView
+    Glib::RefPtr<Gtk::TreeModelFilter> _modelfilter;
+    Glib::RefPtr<TreeStore> _store;
+    Gtk::TreeView _treeView;
+    Gtk::TreeModel::Path _lastpath;
+    // Widgets
+    StyleDialog *_style_dialog;
+    Gtk::Paned _paned;
+    Glib::RefPtr<Gtk::Adjustment> _vadj;
+    Gtk::Box _button_box;
+    Gtk::Box _selectors_box;
+    Gtk::ScrolledWindow _scrolled_window_selectors;
+
+    Gtk::Button _del;
+    Gtk::Button _create;
+    // Reading and writing the style element.
+    Inkscape::XML::Node *_getStyleTextNode(bool create_if_missing = false);
+    void _readStyleElement();
+    void _writeStyleElement();
+
+    // Update watchers
+    std::unique_ptr<Inkscape::XML::NodeObserver> m_nodewatcher;
+    std::unique_ptr<Inkscape::XML::NodeObserver> m_styletextwatcher;
+
+    // Manipulate Tree
+    void _addToSelector(Gtk::TreeModel::Row row);
+    void _removeFromSelector(Gtk::TreeModel::Row row);
+    Glib::ustring _getIdList(std::vector<SPObject *>);
+    std::vector<SPObject *> _getObjVec(Glib::ustring selector);
+    void _insertClass(const std::vector<SPObject *>& objVec, const Glib::ustring& className);
+    void _insertClass(SPObject *obj, const Glib::ustring &className);
+    void _removeClass(const std::vector<SPObject *> &objVec, const Glib::ustring &className, bool all = false);
+    void _removeClass(SPObject *obj, const Glib::ustring &className, bool all = false);
+    void _toggleDirection(Gtk::RadioButton *vertical);
+    void _showWidgets();
+
+    void _selectObjects(int, int);
+    // Variables
+    double _scrollpos;
+    bool _scrollock;
+    bool _updating;                 // Prevent cyclic actions: read <-> write, select via dialog <-> via desktop
+    Inkscape::XML::Node *m_root = nullptr;
+    Inkscape::XML::Node *_textNode; // Track so we know when to add a NodeObserver.
+
+    void _rowExpand(const Gtk::TreeModel::iterator &iter, const Gtk::TreeModel::Path &path);
+    void _rowCollapse(const Gtk::TreeModel::iterator &iter, const Gtk::TreeModel::Path &path);
+    void _closeDialog(Gtk::Dialog *textDialogPtr);
+
+    Inkscape::XML::SignalObserver _objObserver; // Track object in selected row (for style change).
+
+    // Signal and handlers - Internal
+    void _addSelector();
+    void _delSelector();
+    static Glib::ustring _getSelectorClasses(Glib::ustring selector);
+    bool _handleButtonEvent(GdkEventButton *event);
+    void _buttonEventsSelectObjs(GdkEventButton *event);
+    void _selectRow(); // Select row in tree when selection changed.
+    void _vscroll();
+
+    // GUI
+    void _styleButton(Gtk::Button& btn, char const* iconName, char const* tooltip);
+};
+
+} // namespace Dialogc
+} // namespace UI
+} // namespace Inkscape
+
+#endif // SELECTORSDIALOG_H
+
+/*
+  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 :