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Diffstat (limited to 'src/extension/execution-env.cpp')
| -rw-r--r-- | src/extension/execution-env.cpp | 251 |
1 files changed, 251 insertions, 0 deletions
diff --git a/src/extension/execution-env.cpp b/src/extension/execution-env.cpp new file mode 100644 index 0000000..9d5cd3a --- /dev/null +++ b/src/extension/execution-env.cpp @@ -0,0 +1,251 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Authors: + * Ted Gould <ted@gould.cx> + * Abhishek Sharma + * + * Copyright (C) 2007-2008 Authors + * + * Released under GNU GPL v2+, read the file 'COPYING' for more information. + */ + +#include <gtkmm/dialog.h> +#include <gtkmm/messagedialog.h> + +#include "execution-env.h" +#include "prefdialog/prefdialog.h" +#include "implementation/implementation.h" + +#include "selection.h" +#include "effect.h" +#include "document.h" +#include "desktop.h" +#include "inkscape.h" +#include "document-undo.h" +#include "desktop.h" +#include "object/sp-namedview.h" + +#include "ui/widget/canvas.h" // To get window (perverse!) + +namespace Inkscape { +namespace Extension { + +/** \brief Create an execution environment that will allow the effect + to execute independently. + \param effect The effect that we should execute + \param doc The Document to execute on + \param docCache The cache created for that document + \param show_working Show the working dialog + \param show_error Show the error dialog (not working) + + Grabs the selection of the current document so that it can get + restored. Will generate a document cache if one isn't provided. +*/ +ExecutionEnv::ExecutionEnv (Effect * effect, Inkscape::UI::View::View * doc, Implementation::ImplementationDocumentCache * docCache, bool show_working, bool show_errors) : + _state(ExecutionEnv::INIT), + _visibleDialog(nullptr), + _mainloop(nullptr), + _doc(doc), + _docCache(docCache), + _effect(effect), + _show_working(show_working) +{ + SPDesktop *desktop = (SPDesktop *)_doc; + SPDocument *document = _doc->doc(); + if (document && desktop) { + // Temporarily prevent undo in this scope + Inkscape::DocumentUndo::ScopedInsensitive pauseUndo(document); + Inkscape::Selection *selection = desktop->getSelection(); + if (selection) { + // Make sure all selected objects have an ID attribute + selection->enforceIds(); + } + } + + genDocCache(); + + return; +} + +/** \brief Destroy an execution environment + + Destroys the dialog if created and the document cache. +*/ +ExecutionEnv::~ExecutionEnv () { + if (_visibleDialog != nullptr) { + _visibleDialog->hide(); + delete _visibleDialog; + _visibleDialog = nullptr; + } + killDocCache(); + return; +} + +/** \brief Generate a document cache if needed + + If there isn't one we create a new one from the implementation + from the effect's implementation. +*/ +void +ExecutionEnv::genDocCache () { + if (_docCache == nullptr) { + // printf("Gen Doc Cache\n"); + _docCache = _effect->get_imp()->newDocCache(_effect, _doc); + } + return; +} + +/** \brief Destroy a document cache + + Just delete it. +*/ +void +ExecutionEnv::killDocCache () { + if (_docCache != nullptr) { + // printf("Killed Doc Cache\n"); + delete _docCache; + _docCache = nullptr; + } + return; +} + +/** \brief Create the working dialog + + Builds the dialog with a message saying that the effect is working. + And make sure to connect to the cancel. +*/ +void +ExecutionEnv::createWorkingDialog () { + if (_visibleDialog != nullptr) { + _visibleDialog->hide(); + delete _visibleDialog; + _visibleDialog = nullptr; + } + + SPDesktop *desktop = (SPDesktop *)_doc; + Gtk::Widget *toplevel = desktop->getCanvas()->get_toplevel(); + Gtk::Window *window = dynamic_cast<Gtk::Window *>(toplevel); + if (!window) { + return; + } + + gchar * dlgmessage = g_strdup_printf(_("'%s' working, please wait..."), _effect->get_name()); + _visibleDialog = new Gtk::MessageDialog(*window, + dlgmessage, + false, // use markup + Gtk::MESSAGE_INFO, + Gtk::BUTTONS_CANCEL, + true); // modal + _visibleDialog->signal_response().connect(sigc::mem_fun(this, &ExecutionEnv::workingCanceled)); + g_free(dlgmessage); + + Gtk::Dialog *dlg = _effect->get_pref_dialog(); + if (dlg) { + _visibleDialog->set_transient_for(*dlg); + } else { + // ToDo: Do we need to make the window transient for the main window here? + // Currently imossible to test because of GUI freezing during save, + // see https://bugs.launchpad.net/inkscape/+bug/967416 + } + _visibleDialog->show_now(); + + return; +} + +void +ExecutionEnv::workingCanceled( const int /*resp*/) { + cancel(); + undo(); + return; +} + +void +ExecutionEnv::cancel () { + SPDesktop *desktop = (SPDesktop *)_doc; + desktop->clearWaitingCursor(); + _effect->get_imp()->cancelProcessing(); + return; +} + +void +ExecutionEnv::undo () { + DocumentUndo::cancel(_doc->doc()); + return; +} + +void +ExecutionEnv::commit () { + DocumentUndo::done(_doc->doc(), _effect->get_name(), ""); + Effect::set_last_effect(_effect); + _effect->get_imp()->commitDocument(); + killDocCache(); + return; +} + +void +ExecutionEnv::reselect () { + SPDesktop *desktop = SP_ACTIVE_DESKTOP; + if(desktop) { + Inkscape::Selection *selection = desktop->getSelection(); + if (selection) { + selection->restoreBackup(); + } + } + return; +} + +void +ExecutionEnv::run () { + _state = ExecutionEnv::RUNNING; + if (_show_working) { + createWorkingDialog(); + } + SPDesktop *desktop = (SPDesktop *)_doc; + Inkscape::Selection *selection = desktop->getSelection(); + selection->setBackup(); + desktop->setWaitingCursor(); + _effect->get_imp()->effect(_effect, _doc, _docCache); + desktop->clearWaitingCursor(); + _state = ExecutionEnv::COMPLETE; + selection->restoreBackup(); + // _runComplete.signal(); + return; +} + +void +ExecutionEnv::runComplete () { + _mainloop->quit(); +} + +bool +ExecutionEnv::wait () { + if (_state != ExecutionEnv::COMPLETE) { + if (_mainloop) { + _mainloop = Glib::MainLoop::create(false); + } + + sigc::connection conn = _runComplete.connect(sigc::mem_fun(this, &ExecutionEnv::runComplete)); + _mainloop->run(); + + conn.disconnect(); + } + + return true; +} + + + +} } /* namespace Inkscape, Extension */ + + + +/* + 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 : |