1 files changed, 155 insertions, 0 deletions
diff --git a/src/actions/actions-element-image.cpp b/src/actions/actions-element-image.cpp
new file mode 100644
index 0000000..9f05224
--- /dev/null
+++ b/src/actions/actions-element-image.cpp
@@ -0,0 +1,155 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Gio::Actions for use with <image>.
+ *
+ * Copyright (C) 2022 Tavmjong Bah
+ *
+ * The contents of this file may be used under the GNU General Public License Version 2 or later.
+ *
+ */
+
+#include "actions-element-image.h"
+
+#include <iostream>
+
+#include <giomm.h>  // Not <gtkmm.h>! To eventually allow a headless version!
+#include <gtkmm.h>  // OK, we lied. We pop-up an message dialog if external editor not found and if we have a GUI.
+#include <glibmm/i18n.h>
+
+#include "inkscape-application.h"
+#include "inkscape-window.h"
+#include "preferences.h"
+
+#include "selection.h"            // Selection
+#include "object/sp-image.h"
+
+Glib::ustring image_get_editor_name(bool is_svg)
+{
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+
+    Glib::ustring editor;
+    if (is_svg) {
+        editor = prefs->getString("/options/svgeditor/value", "inkscape");
+    } else {
+        editor = prefs->getString("/options/bitmapeditor/value", "gimp");
+    }
+    return editor;
+}
+
+// Note that edits are external to Inkscape and thus we cannot undo them!
+void image_edit(InkscapeApplication *app)
+{
+    auto selection = app->get_active_selection();
+    if (selection->isEmpty()) {
+        // Nothing to do.
+        return;
+    }
+
+    auto document = selection->document();
+
+    for (auto item : selection->items()) {
+        auto image = dynamic_cast<SPImage *>(item);
+        if (image) {
+
+            Inkscape::XML::Node *node = item->getRepr();
+            const gchar *href = node->attribute("xlink:href");
+            if (!href) {
+                std::cerr << "image_edit: no xlink:href" << std::endl;
+                continue;
+            }
+
+            if (strncmp (href, "data", 4) == 0) {
+                std::cerr << "image_edit: cannot edit embedded image" << std::endl;
+                continue;
+            }
+
+            // Find filename.
+            std::string filename = href;
+            if (strncmp (href, "file", 4) == 0) {
+                filename = Glib::filename_from_uri(href);
+            }
+
+            if (Glib::path_is_absolute(filename)) {
+                // Do nothing
+            } else if (document->getDocumentBase()) {
+                filename = Glib::build_filename(document->getDocumentBase(), filename);
+            } else {
+                filename = Glib::build_filename(Glib::get_current_dir(), filename);
+            }
+
+            // Bitmap or SVG?
+            bool is_svg = false;
+            if (filename.substr(filename.find_last_of(".") + 1) == "SVG" ||
+                filename.substr(filename.find_last_of(".") + 1) == "svg") {
+                is_svg = true;
+            }
+
+            // Get editor.
+            auto editor = image_get_editor_name(is_svg);
+
+#ifdef _WIN32
+            // Parsing is done according to Unix shell rules, need to enclose editor path by single
+            // quotes (everything before file extension).
+            int            index = editor.find(".exe");
+            if (index < 0) index = editor.find(".bat");
+            if (index < 0) index = editor.find(".com");
+            if (index < 0) index = editor.length();
+
+            editor.insert(index, "'");
+            editor.insert(0, "'");
+#endif
+            Glib::ustring command = editor + " '" + filename + "'";
+
+            GError* error = nullptr;
+            g_spawn_command_line_async(command.c_str(), &error);
+            if (error) {
+                Glib::ustring message = _("Failed to edit external image.\n<small>Note: Path to editor can be set in Preferences dialog.</small>");
+                Glib::ustring message2 = Glib::ustring::compose(_("System error message: %1"), error->message);
+                auto window = app->get_active_window();
+                if (window) {
+                    Gtk::MessageDialog dialog(*window, message, true, Gtk::MESSAGE_WARNING, Gtk::BUTTONS_OK);
+                    dialog.property_destroy_with_parent() = true;
+                    dialog.set_name("SetEditorDialog");
+                    dialog.set_title(_("External Edit Image:"));
+                    dialog.set_secondary_text(message2);
+                    dialog.run();
+                } else {
+                    std::cerr << "image_edit: " << message << std::endl;
+                }
+                g_error_free(error);
+                error = nullptr;
+            }
+        }
+    }
+}
+
+std::vector<std::vector<Glib::ustring>> raw_data_element_image =
+{
+    // clang-format off
+    {"app.element-image-edit",          N_("Edit externally"),   "Image",    N_("Edit image externally (image must be selected and not embedded).")    },
+    // clang-format on
+};
+
+void
+add_actions_element_image(InkscapeApplication* app)
+{
+    auto *gapp = app->gio_app();
+
+    // clang-format off
+    gapp->add_action(                "element-image-edit",          sigc::bind<InkscapeApplication*>(sigc::ptr_fun(&image_edit),      app));
+    // clang-format on
+
+    app->get_action_extra_data().add_data(raw_data_element_image);
+}
+
+
+/*
+  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 :