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, 348 insertions, 0 deletions

diff --git a/src/gui/editors/segment/segmentcanvas/SegmentMover.cpp b/src/gui/editors/segment/segmentcanvas/SegmentMover.cpp
new file mode 100644
index 0000000..a3d2a59
--- /dev/null
+++ b/src/gui/editors/segment/segmentcanvas/SegmentMover.cpp
@@ -0,0 +1,348 @@
+/* -*- 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.
+*/
+
+
+#include "SegmentMover.h"
+
+#include "base/Event.h"
+#include <klocale.h>
+#include "misc/Debug.h"
+#include "base/Composition.h"
+#include "base/RealTime.h"
+#include "base/Track.h"
+#include "base/SnapGrid.h"
+#include "commands/segment/SegmentReconfigureCommand.h"
+#include "CompositionItemHelper.h"
+#include "CompositionModel.h"
+#include "CompositionView.h"
+#include "document/RosegardenGUIDoc.h"
+#include "gui/general/BaseTool.h"
+#include "gui/general/RosegardenCanvasView.h"
+#include "SegmentTool.h"
+#include "SegmentToolBox.h"
+#include "SegmentSelector.h"
+#include <kcommand.h>
+#include <qcursor.h>
+#include <qevent.h>
+#include <qpoint.h>
+#include <qrect.h>
+#include <qstring.h>
+#include <klocale.h>
+
+
+namespace Rosegarden
+{
+
+SegmentMover::SegmentMover(CompositionView *c, RosegardenGUIDoc *d)
+        : SegmentTool(c, d)
+{
+    RG_DEBUG << "SegmentMover()\n";
+}
+
+void SegmentMover::ready()
+{
+    m_canvas->viewport()->setCursor(Qt::sizeAllCursor);
+    connect(m_canvas, SIGNAL(contentsMoving (int, int)),
+            this, SLOT(slotCanvasScrolled(int, int)));
+    setBasicContextHelp();
+}
+
+void SegmentMover::stow()
+{
+    disconnect(m_canvas, SIGNAL(contentsMoving (int, int)),
+               this, SLOT(slotCanvasScrolled(int, int)));
+}
+
+void SegmentMover::slotCanvasScrolled(int newX, int newY)
+{
+    QMouseEvent tmpEvent(QEvent::MouseMove,
+                         m_canvas->viewport()->mapFromGlobal(QCursor::pos()) + QPoint(newX, newY),
+                         Qt::NoButton, Qt::NoButton);
+    handleMouseMove(&tmpEvent);
+}
+
+void SegmentMover::handleMouseButtonPress(QMouseEvent *e)
+{
+    CompositionItem item = m_canvas->getFirstItemAt(e->pos());
+    SegmentSelector* selector = dynamic_cast<SegmentSelector*>
+                                (getToolBox()->getTool("segmentselector"));
+
+    // #1027303: Segment move issue
+    // Clear selection if we're clicking on an item that's not in it
+    // and we're not in add mode
+
+    if (selector && item &&
+            !m_canvas->getModel()->isSelected(item) && !selector->isSegmentAdding()) {
+        m_canvas->getModel()->clearSelected();
+        m_canvas->getModel()->signalSelection();
+        m_canvas->updateContents();
+    }
+
+    if (item) {
+
+        setCurrentItem(item);
+        m_clickPoint = e->pos();
+        Segment* s = CompositionItemHelper::getSegment(m_currentItem);
+
+        int x = int(m_canvas->grid().getRulerScale()->getXForTime(s->getStartTime()));
+        int y = int(m_canvas->grid().getYBinCoordinate(s->getTrack()));
+
+        m_canvas->setGuidesPos(x, y);
+        m_canvas->setDrawGuides(true);
+
+        if (m_canvas->getModel()->haveSelection()) {
+            RG_DEBUG << "SegmentMover::handleMouseButtonPress() : haveSelection\n";
+            // startChange on all selected segments
+            m_canvas->getModel()->startChangeSelection(CompositionModel::ChangeMove);
+
+
+            CompositionModel::itemcontainer& changingItems = m_canvas->getModel()->getChangingItems();
+            // set m_currentItem to its "sibling" among selected (now moving) items
+            setCurrentItem(CompositionItemHelper::findSiblingCompositionItem(changingItems, m_currentItem));
+
+        } else {
+            RG_DEBUG << "SegmentMover::handleMouseButtonPress() : no selection\n";
+            m_canvas->getModel()->startChange(item, CompositionModel::ChangeMove);
+        }
+
+        m_canvas->updateContents();
+
+        m_passedInertiaEdge = false;
+
+    } else {
+
+        // check for addmode - clear the selection if not
+        RG_DEBUG << "SegmentMover::handleMouseButtonPress() : clear selection\n";
+        m_canvas->getModel()->clearSelected();
+        m_canvas->getModel()->signalSelection();
+        m_canvas->updateContents();
+    }
+
+}
+
+void SegmentMover::handleMouseButtonRelease(QMouseEvent *e)
+{
+    Composition &comp = m_doc->getComposition();
+
+    int startDragTrackPos = m_canvas->grid().getYBin(m_clickPoint.y());
+    int currentTrackPos = m_canvas->grid().getYBin(e->pos().y());
+    int trackDiff = currentTrackPos - startDragTrackPos;
+
+    if (m_currentItem) {
+
+        if (changeMade()) {
+
+            CompositionModel::itemcontainer& changingItems = m_canvas->getModel()->getChangingItems();
+
+            SegmentReconfigureCommand *command =
+                new SegmentReconfigureCommand
+                (changingItems.size() == 1 ? i18n("Move Segment") : i18n("Move Segments"));
+
+
+            CompositionModel::itemcontainer::iterator it;
+
+            for (it = changingItems.begin();
+                    it != changingItems.end();
+                    it++) {
+
+                CompositionItem item = *it;
+
+                Segment* segment = CompositionItemHelper::getSegment(item);
+
+                TrackId origTrackId = segment->getTrack();
+                int trackPos = comp.getTrackPositionById(origTrackId);
+                trackPos += trackDiff;
+
+                if (trackPos < 0) {
+                    trackPos = 0;
+                } else if (trackPos >= comp.getNbTracks()) {
+                    trackPos = comp.getNbTracks() - 1;
+                }
+
+                Track *newTrack = comp.getTrackByPosition(trackPos);
+                int newTrackId = origTrackId;
+                if (newTrack) newTrackId = newTrack->getId();
+
+                timeT newStartTime = CompositionItemHelper::getStartTime(item, m_canvas->grid());
+
+                // We absolutely don't want to snap the end time
+                // to the grid.  We want it to remain exactly the same
+                // as it was, but relative to the new start time.
+                timeT newEndTime = newStartTime + segment->getEndMarkerTime()
+                                   - segment->getStartTime();
+
+                command->addSegment(segment,
+                                    newStartTime,
+                                    newEndTime,
+                                    newTrackId);
+            }
+
+            addCommandToHistory(command);
+        }
+
+        m_canvas->hideTextFloat();
+        m_canvas->setDrawGuides(false);
+        m_canvas->getModel()->endChange();
+        m_canvas->slotUpdateSegmentsDrawBuffer();
+
+    }
+
+    setChangeMade(false);
+    m_currentItem = CompositionItem();
+
+    setBasicContextHelp();
+}
+
+int SegmentMover::handleMouseMove(QMouseEvent *e)
+{
+    m_canvas->setSnapGrain(true);
+
+    Composition &comp = m_doc->getComposition();
+
+    if (!m_currentItem) {
+        setBasicContextHelp();
+        return RosegardenCanvasView::NoFollow;
+    }
+
+    if (!m_canvas->isFineGrain()) {
+        setContextHelp(i18n("Hold Shift to avoid snapping to beat grid"));
+    } else {
+        clearContextHelp();
+    }
+
+    CompositionModel::itemcontainer& changingItems = m_canvas->getModel()->getChangingItems();
+
+    //         RG_DEBUG << "SegmentMover::handleMouseMove : nb changingItems = "
+    //                  << changingItems.size() << endl;
+
+    CompositionModel::itemcontainer::iterator it;
+    int guideX = 0;
+    int guideY = 0;
+    QRect updateRect;
+
+    for (it = changingItems.begin();
+         it != changingItems.end();
+         it++) {
+        //             it->second->showRepeatRect(false);
+
+        int dx = e->pos().x() - m_clickPoint.x(),
+            dy = e->pos().y() - m_clickPoint.y();
+
+        const int inertiaDistance = m_canvas->grid().getYSnap() / 3;
+        if (!m_passedInertiaEdge &&
+            (dx < inertiaDistance && dx > -inertiaDistance) &&
+            (dy < inertiaDistance && dy > -inertiaDistance)) {
+            return RosegardenCanvasView::NoFollow;
+        } else {
+            m_passedInertiaEdge = true;
+        }
+
+        timeT newStartTime = m_canvas->grid().snapX((*it)->savedRect().x() + dx);
+
+        int newX = int(m_canvas->grid().getRulerScale()->getXForTime(newStartTime));
+
+        int startDragTrackPos = m_canvas->grid().getYBin(m_clickPoint.y());
+        int currentTrackPos = m_canvas->grid().getYBin(e->pos().y());
+        int trackDiff = currentTrackPos - startDragTrackPos;
+        int trackPos = m_canvas->grid().getYBin((*it)->savedRect().y());
+
+//        std::cerr << "segment " << *it << ": mouse started at track " << startDragTrackPos << ", is now at " << currentTrackPos << ", trackPos from " << trackPos << " to ";
+
+        trackPos += trackDiff;
+
+//        std::cerr << trackPos << std::endl;
+
+        if (trackPos < 0) {
+            trackPos = 0;
+        } else if (trackPos >= comp.getNbTracks()) {
+            trackPos = comp.getNbTracks() - 1;
+        }
+/*!!!
+        int newY = m_canvas->grid().snapY((*it)->savedRect().y() + dy);
+        // Make sure we don't set a non-existing track
+        if (newY < 0) {
+            newY = 0;
+        }
+        int trackPos = m_canvas->grid().getYBin(newY);
+
+        //             RG_DEBUG << "SegmentMover::handleMouseMove: orig y "
+        //                      << (*it)->savedRect().y()
+        //                      << ", dy " << dy << ", newY " << newY
+        //                      << ", track " << track << endl;
+
+        // Make sure we don't set a non-existing track (c'td)
+        // TODO: make this suck less. Either the tool should
+        // not allow it in the first place, or we automatically
+        // create new tracks - might make undo very tricky though
+        //
+        if (trackPos >= comp.getNbTracks())
+            trackPos = comp.getNbTracks() - 1;
+*/
+        int newY = m_canvas->grid().getYBinCoordinate(trackPos);
+
+        //             RG_DEBUG << "SegmentMover::handleMouseMove: moving to "
+        //                      << newX << "," << newY << endl;
+
+        updateRect |= (*it)->rect();
+        (*it)->moveTo(newX, newY);
+        updateRect |= (*it)->rect();
+        setChangeMade(true);
+    }
+
+    if (changeMade())
+        m_canvas->getModel()->signalContentChange();
+
+    guideX = m_currentItem->rect().x();
+    guideY = m_currentItem->rect().y();
+
+    m_canvas->setGuidesPos(guideX, guideY);
+
+    timeT currentItemStartTime = m_canvas->grid().snapX(m_currentItem->rect().x());
+
+    RealTime time = comp.getElapsedRealTime(currentItemStartTime);
+    QString ms;
+    ms.sprintf("%03d", time.msec());
+
+    int bar, beat, fraction, remainder;
+    comp.getMusicalTimeForAbsoluteTime(currentItemStartTime, bar, beat, fraction, remainder);
+
+    QString posString = QString("%1.%2s (%3, %4, %5)")
+        .arg(time.sec).arg(ms)
+        .arg(bar + 1).arg(beat).arg(fraction);
+
+    m_canvas->setTextFloat(guideX + 10, guideY - 30, posString);
+    m_canvas->updateContents();
+
+    return RosegardenCanvasView::FollowHorizontal | RosegardenCanvasView::FollowVertical;
+}
+
+void SegmentMover::setBasicContextHelp()
+{
+    setContextHelp(i18n("Click and drag to move a segment"));
+}
+
+const QString SegmentMover::ToolName    = "segmentmover";
+
+}
+#include "SegmentMover.moc"