1 files changed, 138 insertions, 0 deletions
diff --git a/src/gui/editors/matrix/MatrixElement.h b/src/gui/editors/matrix/MatrixElement.h
new file mode 100644
index 0000000..d330991
--- /dev/null
+++ b/src/gui/editors/matrix/MatrixElement.h
@@ -0,0 +1,138 @@
+
+/* -*- 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]>
+
+    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_MATRIXELEMENT_H_
+#define _RG_MATRIXELEMENT_H_
+
+#include "base/ViewElement.h"
+#include <qbrush.h>
+#include <qcanvas.h>
+#include "QCanvasMatrixRectangle.h"
+
+class QColor;
+
+
+namespace Rosegarden
+{
+
+class Event;
+
+class MatrixElement : public ViewElement
+{
+
+    typedef std::vector <QCanvasRectangle *> OverlapRectangles;
+
+
+public:
+    MatrixElement(Event *event, bool drum);
+
+    virtual ~MatrixElement();
+
+    void setCanvas(QCanvas* c);
+
+    /**
+     * Returns the actual x coordinate of the element on the canvas
+     */
+    double getCanvasX() const { return m_canvasRect->x(); }
+
+    /**
+     * Returns the actual y coordinate of the element on the canvas
+     */
+    double getCanvasY() const { return m_canvasRect->y(); }
+
+    double getCanvasZ() const { return m_canvasRect->z(); }
+
+    /**
+     * Sets the x coordinate of the element on the canvas
+     */
+    void setCanvasX(double x) { m_canvasRect->setX(x); }
+
+    /**
+     * Sets the y coordinate of the element on the canvas
+     */
+    void setCanvasY(double y) { m_canvasRect->setY(y); }
+
+    void setCanvasZ(double z) { m_canvasRect->setZ(z); }
+
+    /**
+     * Sets the width of the rectangle on the canvas
+     */
+    void setWidth(int w)   { m_canvasRect->setSize(w, m_canvasRect->height()); }
+    int getWidth() { return m_canvasRect->width(); }
+
+    /**
+     * Sets the height of the rectangle on the canvas
+     */
+    void setHeight(int h)   { m_canvasRect->setSize(m_canvasRect->width(), h); }
+    int getHeight() { return m_canvasRect->height(); }
+
+    /// Returns true if the wrapped event is a note
+    bool isNote() const;
+
+    /*
+     * Set the colour of the element
+     */
+    void setColour(const QColor &colour)
+        { m_canvasRect->setBrush(QBrush(colour)); }
+
+    /**
+     * Draws overlap rectangles (if any)
+     * (should not be called in drum mode)
+     */
+    void drawOverlapRectangles();
+
+    /**
+     * Removes overlap rectangles if any
+     */
+    void removeOverlapRectangles();
+
+    /**
+     * If element rectangle is currently visible gets its size and returns true.
+     * Returns false if element rectangle is undefined or not visible.
+     */
+    bool getVisibleRectangle(QRect &rectangle);
+
+    /**
+     * Redraw overlap rectangles of all matrix elements colliding with rect
+     */
+    void redrawOverlaps(QRect rect);
+
+protected:
+
+    //--------------- Data members ---------------------------------
+
+    QCanvasMatrixRectangle *m_canvasRect;
+
+    OverlapRectangles *m_overlapRectangles;
+
+};
+
+
+typedef ViewElementList MatrixElementList;
+
+
+}
+
+#endif