104 lines
2.7 KiB
C++
104 lines
2.7 KiB
C++
//=============================================================================
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// MuseScore
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// Linux Music Score Editor
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// $Id: navigator.h 4785 2011-09-14 10:06:35Z wschweer $
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//
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// Copyright (C) 2002-2009 Werner Schweer and others
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License version 2.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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//=============================================================================
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#ifndef __NAVIGATOR_H__
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#define __NAVIGATOR_H__
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class Score;
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class ScoreView;
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class Page;
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class Navigator;
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//---------------------------------------------------------
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// NScrollArea
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// modified QScrollArea for Navigator
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//---------------------------------------------------------
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class NScrollArea : public QScrollArea {
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Q_OBJECT
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virtual void resizeEvent(QResizeEvent*);
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public:
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NScrollArea(QWidget* w = 0);
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};
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//---------------------------------------------------------
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// PageCache
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//---------------------------------------------------------
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struct PageCache {
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bool valid;
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Page* page;
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QImage pm;
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QTransform matrix;
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Navigator* navigator;
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};
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//---------------------------------------------------------
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// Navigator
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//---------------------------------------------------------
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class Navigator : public QWidget {
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Q_OBJECT
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Score* _score;
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NScrollArea* scrollArea;
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QPointer<ScoreView> _cv;
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QRect viewRect;
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QPoint startMove;
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QList<PageCache> pcl;
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QList<PageCache*> npcl;
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QTransform matrix;
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QFuture<void> updatePixmap;
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QFutureWatcher<void> watcher;
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bool recreatePixmap;
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int cachedWidth;
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void rescale();
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virtual void paintEvent(QPaintEvent*);
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virtual void mousePressEvent(QMouseEvent*);
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virtual void mouseMoveEvent(QMouseEvent*);
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virtual void resizeEvent(QResizeEvent*);
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private slots:
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void pmFinished();
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public slots:
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void updateViewRect();
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void layoutChanged();
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signals:
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void viewRectMoved(const QRectF&);
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public:
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Navigator(NScrollArea* sa, QWidget* parent = 0);
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void setScoreView(ScoreView*);
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void setScore(Score*);
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Score* score() const { return _score; }
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void setViewRect(const QRectF& r);
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};
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#endif
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