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, 160 insertions, 0 deletions

diff --git a/src/gui/editors/notation/HeadersGroup.cpp b/src/gui/editors/notation/HeadersGroup.cpp
new file mode 100644
index 0000000..c0a2de0
--- /dev/null
+++ b/src/gui/editors/notation/HeadersGroup.cpp
@@ -0,0 +1,160 @@
+/* -*- 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>
+
+    This file is Copyright 2007-2008
+        Yves Guillemot      <yc.guillemot@wanadoo.fr> 
+ 
+    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.
+*/
+
+
+#include <limits>
+#include <qsize.h>
+#include <qwidget.h>
+#include <qvbox.h>
+#include <qlabel.h>
+
+#include "HeadersGroup.h"
+#include "TrackHeader.h"
+#include "NotationView.h"
+#include "NotePixmapFactory.h"
+
+
+namespace Rosegarden
+{
+
+
+HeadersGroup::
+HeadersGroup(QWidget *parent, NotationView * nv, Composition * comp) :
+        QVBox(parent),
+        m_notationView(nv),
+        m_composition(comp),
+        m_usedHeight(0),
+        m_filler(0),
+        m_lastX(INT_MIN),
+        m_lastWidth(-1)
+{
+}
+
+void
+HeadersGroup::removeAllHeaders()
+{
+    TrackHeaderVector::iterator i;
+    for (i=m_headers.begin(); i!=m_headers.end(); i++) {
+        delete *i;
+    }
+    m_headers.erase(m_headers.begin(), m_headers.end());
+
+    if (m_filler) {
+        delete m_filler;
+        m_filler = 0;
+    }
+    m_usedHeight = 0;
+    m_lastWidth = -1;
+}
+
+void
+HeadersGroup::addHeader(int trackId, int height, int ypos, double xcur)
+{
+    TrackHeader * sh = new TrackHeader(this, trackId, height, ypos);
+    m_headers.push_back(sh);
+    m_usedHeight += height;
+}
+
+void
+HeadersGroup::completeToHeight(int height)
+{
+    if (height > m_usedHeight) {
+        if (!m_filler) m_filler = new QLabel(this);
+        m_filler->setFixedHeight(height - m_usedHeight);
+    }
+}
+
+void
+HeadersGroup::slotUpdateAllHeaders(int x, int y, bool force)
+{
+    // Minimum header width 
+    int headerMinWidth = m_notationView->getHeadersTopFrameMinWidth();
+
+    // Maximum header width (may be overriden by clef and key width)
+    int headerMaxWidth = (m_notationView->getCanvasVisibleWidth() * 10) / 100;
+
+    if ((x != m_lastX) || force) {
+        m_lastX = x;
+        TrackHeaderVector::iterator i;
+        int neededWidth = 0;
+
+        // Pass 1 : get the max width needed
+        for (i=m_headers.begin(); i!=m_headers.end(); i++) {
+            int w = (*i)->lookAtStaff(x, headerMaxWidth);
+            if (w > neededWidth) neededWidth = w;
+        }
+
+        if (neededWidth < headerMinWidth) neededWidth = headerMinWidth;
+
+        // Only when m_lastWidth is valid (the first time, m_lastWidth = -1)
+        if (m_lastWidth > 0) {
+            // Don't redraw the headers when change of width is very small
+            const int treshold = 10;   // Treshold value should be refined ...
+            int deltaWidth = m_lastWidth - neededWidth;
+            if ((deltaWidth < treshold) && (deltaWidth > -treshold))
+                neededWidth = m_lastWidth;
+        }
+
+        // Pass 2 : redraw the headers when necessary
+        for (i=m_headers.begin(); i!=m_headers.end(); i++) {
+            (*i)->updateHeader(neededWidth);
+        }
+
+        if (neededWidth != m_lastWidth) {
+            setFixedWidth(neededWidth);
+            m_lastWidth = neededWidth;
+
+            // Suppress vertical white stripes on canvas when headers
+            // width changes while scrolling
+            /// TODO : Limit "setChanged()" to the useful part of canvas
+            m_notationView->canvas()->setAllChanged();
+            m_notationView->canvas()->update();
+        }
+    }
+}
+
+
+
+
+void
+HeadersGroup::setCurrent(TrackId trackId)
+{
+    TrackHeaderVector::iterator i;
+    for (i=m_headers.begin(); i!=m_headers.end(); i++)
+                    (*i)->setCurrent((*i)->getId() == trackId);
+}
+
+void
+HeadersGroup::resizeEvent(QResizeEvent * ev)
+{
+    // Needed to avoid gray zone at the right of headers
+    // when width is decreasing
+    emit headersResized(ev->size().width());
+}
+
+}
+#include "HeadersGroup.moc"