1 files changed, 109 insertions, 0 deletions
diff --git a/src/ui/desktop/menu-icon-shift.cpp b/src/ui/desktop/menu-icon-shift.cpp
new file mode 100644
index 0000000..c0b9afe
--- /dev/null
+++ b/src/ui/desktop/menu-icon-shift.cpp
@@ -0,0 +1,109 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/**
+ * @file
+ * Shift Gtk::MenuItems with icons to align with Toggle and Radio buttons.
+ */
+/*
+ * Authors:
+ *   Tavmjong Bah       <tavmjong@free.fr>
+ *   Patrick Storz      <eduard.braun2@gmx.de>
+ *
+ * Copyright (C) 2020 Authors
+ *
+ * The contents of this file may be used under the GNU General Public License Version 2 or later.
+ * Read the file 'COPYING' for more information.
+ *
+ */
+
+#include "menu-icon-shift.h"
+
+#include <iostream>
+#include <gtkmm.h>
+
+#include "inkscape-application.h"  // Action extra data
+
+// Could be used to update status bar.
+// bool on_enter_notify(GdkEventCrossing* crossing_event, Gtk::MenuItem* menuitem)
+// {
+//     return false;
+// }
+
+/*
+ *  Install CSS to shift icons into the space reserved for toggles (i.e. check and radio items).
+ *  The CSS will apply to all menu icons but is updated as each menu is shown.
+ */
+
+bool
+shift_icons(Gtk::MenuShell* menu)
+{
+    gint width, height;
+    gtk_icon_size_lookup(GTK_ICON_SIZE_MENU, &width, &height);
+    bool shifted = false;    
+    // Calculate required shift. We need an example!
+    // Search for Gtk::MenuItem -> Gtk::Box -> Gtk::Image
+    static auto app = InkscapeApplication::instance();
+    auto &label_to_tooltip_map = app->get_menu_label_to_tooltip_map();
+
+    for (auto child : menu->get_children()) {
+        auto menuitem = dynamic_cast<Gtk::MenuItem *>(child);
+        if (menuitem) { //we need to go here to know we are in RTL maybe we can check in otehr way and simplify
+            auto submenu = menuitem->get_submenu();
+            if (submenu) {
+                shifted = shift_icons(submenu);
+            }
+            Gtk::Box *box = nullptr;
+            auto label = menuitem->get_label();
+            if (label.empty()) {
+                box = dynamic_cast<Gtk::Box *>(menuitem->get_child());
+                if (!box) {
+                    continue;
+                }  
+                std::vector<Gtk::Widget *> children = box->get_children();
+                if (children.size() == 2) {
+                    auto label_widget = dynamic_cast<Gtk::Label *>(children[1]);
+                    if (!label_widget) {
+                        label_widget = dynamic_cast<Gtk::Label *>(children[0]);
+                    }
+                    if (label_widget) {
+                        label = label_widget->get_label();
+                    }
+                }
+            }
+            if (label.empty()) {
+                continue;
+            } 
+            auto it = label_to_tooltip_map.find(label);
+            if (it != label_to_tooltip_map.end()) {
+                menuitem->set_tooltip_text(it->second);
+            }
+            if (shifted || !box) {
+                continue;
+            }
+            width += box->get_spacing() * 1.5; //2 elements 3 halfs to measure
+            std::string css_str;
+            Glib::RefPtr<Gtk::CssProvider> provider = Gtk::CssProvider::create();
+            auto const screen = Gdk::Screen::get_default();
+            Gtk::StyleContext::add_provider_for_screen(screen, provider, GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
+            if (menuitem->get_direction() == Gtk::TEXT_DIR_RTL) {
+                css_str = ".shifticonmenu box {margin-right:-" + std::to_string(width) + "px;}";
+            } else {
+                css_str = ".shifticonmenu box {margin-left:-" + std::to_string(width) + "px;}";
+            }
+            provider->load_from_data(css_str);
+            shifted = true;
+        }
+    }
+    return shifted;
+}
+
+
+/*
+  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 :