Added old abandoned KDE3 version of the RoseGarden MIDI tool

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/rosegarden@1097595 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 179 insertions, 0 deletions

diff --git a/src/gui/editors/segment/segmentcanvas/CompositionModel.h b/src/gui/editors/segment/segmentcanvas/CompositionModel.h
new file mode 100644
index 0000000..beafc2e
--- /dev/null
+++ b/src/gui/editors/segment/segmentcanvas/CompositionModel.h
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+
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Rosegarden
+    A MIDI and audio sequencer and musical notation editor.
+
+    This program is Copyright 2000-2008
+        Guillaume Laurent   <glaurent@telegraph-road.org>,
+        Chris Cannam        <cannam@all-day-breakfast.com>,
+        Richard Bown        <richard.bown@ferventsoftware.com>
+
+    The moral rights of Guillaume Laurent, Chris Cannam, and Richard
+    Bown to claim authorship of this work have been asserted.
+
+    Other copyrights also apply to some parts of this work.  Please
+    see the AUTHORS file and individual file headers for details.
+
+    This program is free software; you can redistribute it and/or
+    modify it under the terms of the GNU General Public License as
+    published by the Free Software Foundation; either version 2 of the
+    License, or (at your option) any later version.  See the file
+    COPYING included with this distribution for more information.
+*/
+
+#ifndef _RG_COMPOSITIONMODEL_H_
+#define _RG_COMPOSITIONMODEL_H_
+
+#include "base/Composition.h"
+#include "base/Segment.h"
+#include <set>
+#include <qcolor.h>
+#include <qobject.h>
+#include <qimage.h>
+#include <qpoint.h>
+#include <qrect.h>
+#include <utility>
+#include <vector>
+#include "base/Event.h"
+#include "CompositionRect.h"
+#include "CompositionItem.h"
+
+
+class RectRanges;
+class CompositionItem;
+class AudioPreviewDrawData;
+
+
+namespace Rosegarden
+{
+
+class SnapGrid;
+typedef std::vector<QImage> PixmapArray;
+
+
+class CompositionModel : public QObject, public CompositionObserver, public SegmentObserver
+{
+    Q_OBJECT
+public:
+
+    struct CompositionItemCompare {
+        bool operator()(const CompositionItem &c1, const CompositionItem &c2) const;
+    };
+
+    typedef std::vector<QRect> rectlist;
+    typedef std::vector<int> heightlist;
+    typedef std::vector<CompositionRect> rectcontainer;
+    typedef std::set<CompositionItem, CompositionItemCompare> itemcontainer;
+
+    struct AudioPreviewDrawDataItem {
+        AudioPreviewDrawDataItem(PixmapArray p, QPoint bp, QRect r) :
+            pixmap(p), basePoint(bp), rect(r), resizeOffset(0) {};
+        PixmapArray pixmap;
+        QPoint basePoint;
+        QRect rect;
+
+        // when showing a segment that is being resized from the
+        // beginning, this contains the offset between the current
+        // rect of the segment and the resized one
+        int resizeOffset;
+    };
+    
+    typedef std::vector<AudioPreviewDrawDataItem> AudioPreviewDrawData;
+
+    struct RectRange {
+        std::pair<rectlist::iterator, rectlist::iterator> range;
+        QPoint basePoint;
+        QColor color;
+    };
+
+    typedef std::vector<RectRange> RectRanges;
+
+    class AudioPreviewData {
+    public:
+        AudioPreviewData(bool showMinima, unsigned int channels) : m_showMinima(showMinima), m_channels(channels) {};
+        // ~AudioPreviewData();
+
+        bool showsMinima()              { return m_showMinima; }
+        void setShowMinima(bool s)      { m_showMinima = s;    }
+
+        unsigned int getChannels()       { return m_channels;   }
+        void setChannels(unsigned int c) { m_channels = c;      }
+
+        const std::vector<float> &getValues() const { return m_values;  }
+        void setValues(const std::vector<float>&v) { m_values = v; }
+
+        QRect getSegmentRect()              { return m_segmentRect; }
+        void setSegmentRect(const QRect& r) { m_segmentRect = r; }
+
+    protected:
+        std::vector<float> m_values;
+        bool               m_showMinima;
+        unsigned int       m_channels;
+        QRect              m_segmentRect;
+
+    private:
+        // no copy ctor
+        AudioPreviewData(const AudioPreviewData&);
+    };
+
+
+    virtual ~CompositionModel() {};
+
+    virtual unsigned int getNbRows() = 0;
+    virtual const rectcontainer& getRectanglesIn(const QRect& rect,
+                                                 RectRanges* notationRects, AudioPreviewDrawData* audioRects) = 0;
+
+    virtual heightlist getTrackDividersIn(const QRect& rect) = 0;
+
+    virtual itemcontainer getItemsAt (const QPoint&) = 0;
+    virtual timeT getRepeatTimeAt (const QPoint&, const CompositionItem&) = 0;
+
+    virtual SnapGrid& grid() = 0;
+
+    virtual void setPointerPos(int xPos) = 0;
+    virtual void setSelected(const CompositionItem&, bool selected = true) = 0;
+    virtual bool isSelected(const CompositionItem&) const = 0;
+    virtual void setSelected(const itemcontainer&) = 0;
+    virtual void clearSelected() = 0;
+    virtual bool haveSelection() const = 0;
+    virtual bool haveMultipleSelection() const = 0;
+    virtual void signalSelection() = 0;
+    virtual void setSelectionRect(const QRect&) = 0;
+    virtual void finalizeSelectionRect() = 0;
+    virtual QRect getSelectionContentsRect() = 0;
+    virtual void signalContentChange() = 0;
+
+    virtual void addRecordingItem(const CompositionItem&) = 0;
+    virtual void removeRecordingItem(const CompositionItem&) = 0;
+    virtual void clearRecordingItems() = 0;
+    virtual bool haveRecordingItems() = 0;
+
+    enum ChangeType { ChangeMove, ChangeResizeFromStart, ChangeResizeFromEnd };
+
+    virtual void startChange(const CompositionItem&, ChangeType change) = 0;
+    virtual void startChangeSelection(ChangeType change) = 0;
+    virtual itemcontainer& getChangingItems() = 0;
+    virtual void endChange() = 0;
+    virtual ChangeType getChangeType() = 0;
+
+    virtual void setLength(int width) = 0;
+    virtual int  getLength() = 0;
+
+signals:
+    void needContentUpdate();
+    void needContentUpdate(const QRect&);
+    void needArtifactsUpdate();
+
+protected:
+    CompositionItem* m_currentCompositionItem;
+};
+
+class AudioPreviewThread;
+class AudioPreviewUpdater;
+
+
+}
+
+#endif