1 files changed, 144 insertions, 0 deletions
diff --git a/src/gui/editors/notation/HeadersGroup.h b/src/gui/editors/notation/HeadersGroup.h
new file mode 100644
index 0000000..22d25da
--- /dev/null
+++ b/src/gui/editors/notation/HeadersGroup.h
@@ -0,0 +1,144 @@
+
+/* -*- 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   <[email protected]>,
+        Chris Cannam        <[email protected]>,
+        Richard Bown        <[email protected]>
+
+    This file is Copyright 2007-2008
+        Yves Guillemot      <[email protected]> 
+
+    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_HEADERSGROUP_H_
+#define _RG_HEADERSGROUP_H_
+
+#include "base/Track.h"
+
+#include <vector>
+#include <qsize.h>
+#include <qwidget.h>
+#include <qvbox.h>
+
+
+class QLabel;
+class QResizeEvent;
+
+
+namespace Rosegarden
+{
+
+
+class NotationView;
+class Composition;
+class TrackHeader;
+
+
+class HeadersGroup : public QVBox
+{
+    Q_OBJECT
+public:
+    /**
+     * Create an empty headers group
+     */
+    HeadersGroup(QWidget *parent, NotationView * nv, Composition * comp);
+
+    void removeAllHeaders();
+
+    void addHeader(int trackId, int height, int ypos, double xcur);
+
+    /**
+     * Resize a filler at bottom of group to set the headersGroup height
+     * to the value specified in parameter.
+     * (Used to give to the headers group exactly the same height as the
+     * canvas. Necessary to get synchronous vertical scroll.) 
+     */
+    void completeToHeight(int height);
+
+    NotationView * getNotationView()
+    { return m_notationView;
+    }
+
+    Composition * getComposition()
+    { return m_composition;
+    }
+
+    /**
+     * Return the total height of all the headers (without the filler).
+     */
+    int getUsedHeight()
+    { return m_usedHeight;
+    }
+
+    /**
+     * Highlight as "current" the header of the specified track.
+     */
+    void setCurrent(TrackId trackId);
+
+    /**
+     * Highlight as "current" the header of the specified track.
+     */
+    int getWidth()
+    {
+        return m_lastWidth;
+    }
+
+    typedef enum { ShowNever, ShowWhenNeeded, ShowAlways } ShowHeadersModeType;
+
+    // Used to ensure to have one default value and only one.
+    static const ShowHeadersModeType DefaultShowMode = ShowAlways;
+
+    // Useful in configuration dialog.
+    static bool isValidShowMode(int mode)
+    {
+        return ((mode >= ShowNever) && (mode <= ShowAlways));
+    }
+
+public slots :
+    /**
+     * Called when notation canvas moves.
+     * Setting force to true forces the headers to be redrawn even 
+     * if x has not changed since the last call.
+     */
+    void slotUpdateAllHeaders(int x, int y, bool force = false);
+
+signals :
+    void headersResized(int newWidth);
+
+private:
+    void resizeEvent(QResizeEvent * ev);
+
+    NotationView * m_notationView;
+    Composition * m_composition;
+
+    typedef std::vector<TrackHeader *> TrackHeaderVector;
+    TrackHeaderVector m_headers;
+
+    int m_usedHeight;
+    QLabel * m_filler;
+    int m_lastX;
+    int m_lastWidth;
+
+};
+
+
+}
+
+#endif