Rewrite of main.cpp using InkscapeApplication (Gtk::Application)

Use Gio::File for accessing files.
Use Gio options to handle command line arguments.
Use Gio::Actions for some command line arguments.
Move file export code to src/io/file-export-cmd.h/.cpp. Make into class.

1 files changed, 277 insertions, 0 deletions

diff --git a/src/actions/actions-base.cpp b/src/actions/actions-base.cpp
new file mode 100644
index 000000000..a3ff363a7
--- /dev/null
+++ b/src/actions/actions-base.cpp
@@ -0,0 +1,277 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Gio::Actions tied to the application and independent of GUI.
+ *
+ * Copyright (C) 2018 Tavmjong Bah
+ *
+ * The contents of this file may be used under the GNU General Public License Version 2 or later.
+ *
+ */
+
+#include <iostream>
+
+#include <giomm.h>  // Not <gtkmm.h>! To eventually allow a headless version!
+
+#include "actions-base.h"
+
+#include "inkscape-application.h"
+
+#include "inkscape.h"             // Inkscape::Application
+#include "inkscape-version.h"     // Inkscape version
+#include "path-prefix.h"          // Extension directory
+#include "extension/init.h"       // List verbs
+#include "verbs.h"                // List verbs
+#include "selection.h"            // Selection
+#include "object/sp-root.h"       // query_all()
+#include "file.h"                 // dpi convert method
+
+void
+print_inkscape_version()
+{
+    std::cout << "Inkscape " << Inkscape::version_string << std::endl;
+}
+
+void
+print_extension_directory()
+{
+    std::cout << INKSCAPE_EXTENSIONDIR << std::endl;
+}
+
+void
+print_verb_list()
+{
+    // This really shouldn't go here, we should init the app.
+    // But, since we're just exiting in this path, there is
+    // no harm, and this is really a better place to put
+    // everything else.
+    Inkscape::Extension::init();  // extension/init.h
+    Inkscape::Verb::list();       // verbs.h
+}
+
+// Helper function: returns true if both document and selection found.
+bool
+get_document_and_selection(InkscapeApplication* app, SPDocument** document, Inkscape::Selection** selection)
+{
+    *document = app->get_active_document();
+    if (!(*document)) {
+        std::cerr << "get_document_and_selection: No document!" << std::endl;
+        return false;
+    }
+
+    Inkscape::ActionContext context = INKSCAPE.action_context_for_document(*document);
+    *selection = context.getSelection();
+    if (!*selection) {
+        std::cerr << "get_document_and_selection: No selection!" << std::endl;
+        return false;
+    }
+
+    return true;
+}
+
+void
+select_via_id(Glib::ustring ids, InkscapeApplication* app)
+{
+    SPDocument* document = nullptr;
+    Inkscape::Selection* selection = nullptr;
+    if (!get_document_and_selection(app, &document, &selection)) {
+        return;
+    }
+
+    auto tokens = Glib::Regex::split_simple("\\s*,\\s*", ids);
+    for (auto id : tokens) {
+        SPObject* object = document->getObjectById(id);
+        if (object) {
+            selection->add(object);
+        } else {
+            std::cerr << "select: did not find object with id: " << id << std::endl;
+        }
+    }
+}
+
+// Helper function for query_x(), query_y(), query_width(), and query_height().
+void
+query_dimension(InkscapeApplication* app, bool extent, Geom::Dim2 const axis)
+{
+    SPDocument* document = nullptr;
+    Inkscape::Selection* selection = nullptr;
+    if (!get_document_and_selection(app, &document, &selection)) {
+        return;
+    }
+
+    if (selection->isEmpty()) {
+        selection->add(document->getRoot());
+    }
+
+    bool first = true;
+    auto items = selection->items();
+    for (auto item : items) {
+        if (!first) {
+            std::cout << ",";
+        }
+        first = false;
+        Geom::OptRect area = item->documentVisualBounds();
+        if (area) {
+            if (extent) {
+                std::cout << area->dimensions()[axis];
+            } else {
+                std::cout << area->min()[axis];
+            }
+        } else {
+            std::cout << "0";
+        }
+    }
+    std::cout << std::endl;
+}
+
+void
+query_x(InkscapeApplication* app)
+{
+    query_dimension(app, false, Geom::X);
+}
+
+void
+query_y(InkscapeApplication* app)
+{
+    query_dimension(app, false, Geom::Y);
+}
+
+void
+query_width(InkscapeApplication* app)
+{
+    query_dimension(app, true, Geom::X);
+}
+
+void
+query_height(InkscapeApplication* app)
+{
+    query_dimension(app, true, Geom::Y);
+}
+
+// Helper for query_all()
+void
+query_all_recurse (SPObject *o)
+{
+    SPItem *item = dynamic_cast<SPItem*>(o);
+    if (item && item->getId()) {
+        Geom::OptRect area = item->documentVisualBounds();
+        if (area) {
+            std::cout << item->getId()               << ","
+                      << area->min()[Geom::X]        << ","
+                      << area->min()[Geom::Y]        << ","
+                      << area->dimensions()[Geom::X] << ","
+                      << area->dimensions()[Geom::Y] << std::endl;
+        }
+
+        for (auto& child: o->children) {
+            query_all_recurse (&child);
+        }
+    }
+}
+
+void
+query_all(InkscapeApplication* app)
+{
+    SPDocument* doc = app->get_active_document();
+    if (!doc) {
+        std::cerr << "query_all: no document!" << std::endl;
+        return;
+    }
+
+    SPObject *o = doc->getRoot();
+    if (o) {
+        query_all_recurse(o);
+    }
+}
+
+void
+pdf_page(int page)
+{
+    INKSCAPE.set_pdf_page(page);
+}
+
+void
+convert_dpi_method(Glib::ustring method)
+{
+    if (method == "none") {
+        sp_file_convert_dpi_method_commandline = FILE_DPI_UNCHANGED;
+    } else if (method == "scale-viewbox") {
+        sp_file_convert_dpi_method_commandline = FILE_DPI_VIEWBOX_SCALED;
+    } else if (method == "scale-document") {
+        sp_file_convert_dpi_method_commandline = FILE_DPI_DOCUMENT_SCALED;
+    } else {
+        std::cerr << "dpi_convert_method: invalid option" << std::endl;
+    }
+}
+
+void
+no_convert_baseline()
+{
+    sp_no_convert_text_baseline_spacing = true;
+}
+
+// Temporary: Verbs are to be replaced by Gio::Actions!
+void
+verbs(Glib::ustring verblist, InkscapeApplication* app)
+{
+    auto tokens = Glib::Regex::split_simple("\\s*,\\s*", verblist);
+    for (auto token : tokens) {
+        std::vector<Glib::ustring> parts = Glib::Regex::split_simple("\\s*:\\s*", token); // Second part is always ignored... we could implement it but better to switch to Gio::Actions
+        if (!parts[0].empty()) {
+            Inkscape::Verb* verb = Inkscape::Verb::getbyid(parts[0].c_str());
+            if (verb == nullptr) {
+                std::cerr << "verbs_action: Invalid verb: " << parts[0] << std::endl;
+                break;
+            }
+            // Inkscape::ActionContext context = INKSCAPE.action_context_for_document(*document);
+            SPAction* action = verb->get_action(INKSCAPE.active_action_context());
+            sp_action_perform(action, nullptr);  // Data is ignored!
+        }
+    }
+}
+
+void
+vacuum_defs(InkscapeApplication* app)
+{
+    SPDocument* document = nullptr;
+    Inkscape::Selection* selection = nullptr;
+    if (!get_document_and_selection(app, &document, &selection)) {
+        return;
+    }
+    document->vacuumDocument();
+}
+
+void
+add_actions_base(InkscapeApplication* app)
+{
+    // Note: "radio" actions are just an easy way to set type without using templating.
+    app->add_action("inkscape-version",                                                   sigc::ptr_fun(&print_inkscape_version   ));
+    app->add_action("extension-directory",                                                sigc::ptr_fun(&print_extension_directory));
+    app->add_action("verb-list",                                                          sigc::ptr_fun(&print_verb_list          ));
+
+    app->add_action_radio_integer( "open-page",                                           sigc::ptr_fun(&pdf_page),                             0);
+    app->add_action_radio_string(  "convert-dpi-method",                                  sigc::ptr_fun(&convert_dpi_method),              "none");
+    app->add_action(               "no-convert-baseline",                                 sigc::ptr_fun(&no_convert_baseline)                    );
+
+    app->add_action(               "vacuum-defs",        sigc::bind<InkscapeApplication*>(sigc::ptr_fun(&vacuum_defs),               app)        );
+    app->add_action_radio_string(  "select",             sigc::bind<InkscapeApplication*>(sigc::ptr_fun(&select_via_id),             app), "null");
+    app->add_action_radio_string(  "verb",               sigc::bind<InkscapeApplication*>(sigc::ptr_fun(&verbs),                     app), "null");
+
+    app->add_action_radio_string(  "query-id",           sigc::bind<InkscapeApplication*>(sigc::ptr_fun(&select_via_id),             app), "null"); // For backwards compatibility.
+    app->add_action(               "query-x",            sigc::bind<InkscapeApplication*>(sigc::ptr_fun(&query_x),                   app)        );
+    app->add_action(               "query-y",            sigc::bind<InkscapeApplication*>(sigc::ptr_fun(&query_y),                   app)        );
+    app->add_action(               "query-width",        sigc::bind<InkscapeApplication*>(sigc::ptr_fun(&query_width),               app)        );
+    app->add_action(               "query-height",       sigc::bind<InkscapeApplication*>(sigc::ptr_fun(&query_height),              app)        );
+    app->add_action(               "query-all",          sigc::bind<InkscapeApplication*>(sigc::ptr_fun(&query_all),                 app)        );
+
+}
+
+/*
+  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 :