libs/flake/KoCopyController.cpp

0001 /* This file is part of the KDE project
0002  * Copyright (C) 2006-2008 Thomas Zander <zander@kde.org>
0003  * Copyright (C) 2011 Boudewijn Rempt <boud@valdyas.org>
0004  *
0005  * This library is free software; you can redistribute it and/or
0006  * modify it under the terms of the GNU Library General Public
0007  * License as published by the Free Software Foundation; either
0008  * version 2 of the License, or (at your option) any later version.
0009  *
0010  * This library is distributed in the hope that it will be useful,
0011  * but WITHOUT ANY WARRANTY; without even the implied warranty of
0012  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
0013  * Library General Public License for more details.
0014  *
0015  * You should have received a copy of the GNU Library General Public License
0016  * along with this library; see the file COPYING.LIB.  If not, write to
0017  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
0018  * Boston, MA 02110-1301, USA.
0019  */
0020
0021 #include "KoCopyController.h"
0022
0023 #include <KoToolBase.h>
0024 #include <KoCanvasBase.h>
0025 #include <KoToolProxy.h>
0026 #include <KoToolSelection.h>
0027
0028 #include <FlakeDebug.h>
0029 #include <QAction>
0030
0031 // KoCopyControllerPrivate
0032 class KoCopyControllerPrivate
0033 {
0034 public:
0035     KoCopyControllerPrivate(KoCopyController *p, KoCanvasBase *c, QAction *a);
0036
0037     // request to start the actual copy
0038     void copy();
0039
0040     // request to start the actual cut
0041     void cut();
0042
0043     void selectionChanged(bool hasSelection);
0044
0045     KoCopyController *parent;
0046     KoCanvasBase *canvas;
0047     QAction *action;
0048     bool appHasSelection;
0049 };
0050
0051 KoCopyControllerPrivate::KoCopyControllerPrivate(KoCopyController *p, KoCanvasBase *c, QAction *a)
0052     : parent(p),
0053     canvas(c),
0054     action(a)
0055 {
0056     appHasSelection = false;
0057 }
0058
0059 void KoCopyControllerPrivate::copy()
0060 {
0061     if (canvas->toolProxy()->hasSelection())
0062         // means the copy can be done by a flake tool
0063         canvas->toolProxy()->copy();
0064     else // if not; then the application gets a request to do the copy
0065         emit parent->copyRequested();
0066 }
0067
0068 void KoCopyControllerPrivate::cut()
0069 {
0070     if (canvas->toolProxy()->hasSelection()) {
0071         canvas->toolProxy()->cut();
0072     }
0073     else {
0074         emit parent->copyRequested();
0075     }
0076 }
0077
0078 void KoCopyControllerPrivate::selectionChanged(bool hasSelection)
0079 {
0080     action->setEnabled(appHasSelection || hasSelection);
0081 }
0082
0083
0084 // KoCopyController
0085 KoCopyController::KoCopyController(KoCanvasBase *canvas, QAction *copyAction)
0086     : QObject(copyAction),
0087     d(new KoCopyControllerPrivate(this, canvas, copyAction))
0088 {
0089     connect(canvas->toolProxy(), SIGNAL(selectionChanged(bool)), this, SLOT(selectionChanged(bool)));
0090     connect(copyAction, SIGNAL(triggered()), this, SLOT(copy()));
0091     hasSelection(false);
0092 }
0093
0094 KoCopyController::~KoCopyController()
0095 {
0096     delete d;
0097 }
0098
0099 void KoCopyController::hasSelection(bool selection)
0100 {
0101     d->appHasSelection = selection;
0102     d->action->setEnabled(d->appHasSelection ||
0103                           d->canvas->toolProxy()->hasSelection());
0104 }
0105
0106 //have to include this because of Q_PRIVATE_SLOT
0107 #include "moc_KoCopyController.cpp"