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, 499 insertions, 0 deletions

diff --git a/src/gui/rulers/ControllerEventsRuler.cpp b/src/gui/rulers/ControllerEventsRuler.cpp
new file mode 100644
index 0000000..265a701
--- /dev/null
+++ b/src/gui/rulers/ControllerEventsRuler.cpp
@@ -0,0 +1,499 @@
+/* -*- 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 "ControllerEventsRuler.h"
+
+#include <klocale.h>
+#include "misc/Debug.h"
+#include "misc/Strings.h"
+#include "base/ControlParameter.h"
+#include "base/Event.h"
+#include "base/MidiTypes.h"
+#include "base/NotationTypes.h"
+#include "base/RulerScale.h"
+#include "base/Segment.h"
+#include "base/Selection.h"
+#include "commands/edit/EraseCommand.h"
+#include "ControlRuler.h"
+#include "ControlItem.h"
+#include "ControllerEventAdapter.h"
+#include "ControlRulerEventInsertCommand.h"
+#include "ControlRulerEventEraseCommand.h"
+#include "gui/general/EditViewBase.h"
+#include "gui/widgets/TextFloat.h"
+#include <klineeditdlg.h>
+#include <qcanvas.h>
+#include <qcolor.h>
+#include <qpoint.h>
+#include <qstring.h>
+#include <qvalidator.h>
+#include <qwidget.h>
+
+
+namespace Rosegarden
+{
+
+ControllerEventsRuler::ControllerEventsRuler(Segment *segment,
+        RulerScale* rulerScale,
+        EditViewBase* parentView,
+        QCanvas* c,
+        QWidget* parent,
+        const ControlParameter *controller,
+        const char* name, WFlags f)
+        : ControlRuler(segment, rulerScale, parentView, c, parent, name, f),
+        m_defaultItemWidth(20),
+        m_controlLine(new QCanvasLine(canvas())),
+        m_controlLineShowing(false),
+        m_controlLineX(0),
+        m_controlLineY(0)
+{
+    // Make a copy of the ControlParameter if we have one
+    //
+    if (controller)
+        m_controller = new ControlParameter(*controller);
+    else
+        m_controller = 0;
+
+    setMenuName("controller_events_ruler_menu");
+    drawBackground();
+    init();
+}
+
+void
+ControllerEventsRuler::setSegment(Segment *segment)
+{
+    RG_DEBUG << "ControllerEventsRuler::setSegment(" << segment << ")" << endl;
+
+    m_segment->removeObserver(this);
+    m_segment = segment;
+    m_segment->addObserver(this);
+
+    while (child(NULL))
+        delete (child(NULL));
+
+    drawBackground();
+    init();
+}
+
+void
+ControllerEventsRuler::init()
+{
+    // Reset range information for this controller type (for the moment
+    // this assumes min is always 0.
+    //
+    setMaxItemValue(m_controller->getMax());
+
+    for (Segment::iterator i = m_segment->begin();
+            i != m_segment->end(); ++i) {
+
+        // skip if not the same type of event that we're expecting
+        //
+        if (m_controller->getType() != (*i)->getType())
+            continue;
+
+        int width = getDefaultItemWidth();
+
+        // Check for specific controller value if we need to
+        //
+        if (m_controller->getType() == Controller::EventType) {
+            try {
+                if ((*i)->get
+                        <Int>(Controller::NUMBER)
+                        != m_controller->getControllerValue())
+                    continue;
+            } catch (...) {
+                continue;
+            }
+        } else if (m_controller->getType() == PitchBend::EventType)
+            width /= 4;
+
+        //RG_DEBUG << "ControllerEventsRuler: adding element\n";
+
+        double x = m_rulerScale->getXForTime((*i)->getAbsoluteTime());
+        new ControlItem(this, new ControllerEventAdapter(*i),
+                        int(x + m_staffOffset), width);
+    }
+}
+
+void
+ControllerEventsRuler::drawBackground()
+{
+    // Draw some minimum and maximum controller value guide lines
+    //
+    QCanvasLine *topLine = new QCanvasLine(canvas());
+    QCanvasLine *topQLine = new QCanvasLine(canvas());
+    QCanvasLine *midLine = new QCanvasLine(canvas());
+    QCanvasLine *botQLine = new QCanvasLine(canvas());
+    QCanvasLine *bottomLine = new QCanvasLine(canvas());
+    //m_controlLine->setPoints(m_controlLineX, m_controlLineY, m_controlLineX, m_controlLineY);
+    int cHeight = canvas()->height();
+    int cWidth = canvas()->width();
+
+    topLine->setPen(QColor(127, 127, 127));
+    topLine->setPoints(0, 0, cWidth, 0);
+    topLine->setZ( -10);
+    topLine->show();
+
+    topQLine->setPen(QColor(192, 192, 192));
+    topQLine->setPoints(0, cHeight / 4, cWidth, cHeight / 4);
+    topQLine->setZ( -10);
+    topQLine->show();
+
+    midLine->setPen(QColor(127, 127, 127));
+    midLine->setPoints(0, cHeight / 2, cWidth, cHeight / 2);
+    midLine->setZ( -10);
+    midLine->show();
+
+    botQLine->setPen(QColor(192, 192, 192));
+    botQLine->setPoints(0, 3*cHeight / 4, cWidth, 3*cHeight / 4);
+    botQLine->setZ( -10);
+    botQLine->show();
+
+    bottomLine->setPen(QColor(127, 127, 127));
+    bottomLine->setPoints(0, cHeight - 1, cWidth, cHeight - 1);
+    bottomLine->setZ( -10);
+    bottomLine->show();
+
+    canvas()->update();
+}
+
+ControllerEventsRuler::~ControllerEventsRuler()
+{}
+
+QString ControllerEventsRuler::getName()
+{
+    if (m_controller) {
+        QString name = i18n("Unsupported Event Type");
+
+        if (m_controller->getType() == Controller::EventType) {
+            QString hexValue;
+            hexValue.sprintf("0x%x", m_controller->getControllerValue());
+
+            name = QString("%1 (%2 / %3)").arg(strtoqstr(m_controller->getName()))
+                   .arg(int(m_controller->getControllerValue()))
+                   .arg(hexValue);
+        } else if (m_controller->getType() == PitchBend::EventType) {
+            name = i18n("Pitch Bend");
+        }
+
+        return name;
+    } else
+        return i18n("Controller Events");
+}
+
+void ControllerEventsRuler::eventAdded(const Segment*, Event *e)
+{
+    if (e->getType() != m_controller->getType())
+        return ;
+
+    // Check for specific controller value if we need to
+    //
+    if (e->getType() == Controller::EventType) {
+        try {
+            if (e->get
+                    <Int>(Controller::NUMBER) !=
+                    m_controller->getControllerValue())
+                return ;
+        } catch (...) {
+            return ;
+        }
+    }
+
+    RG_DEBUG << "ControllerEventsRuler::elementAdded()\n";
+
+    double x = m_rulerScale->getXForTime(e->getAbsoluteTime());
+
+    int width = getDefaultItemWidth();
+
+    if (m_controller->getType() == PitchBend::EventType)
+        width /= 4;
+
+    new ControlItem(this, new ControllerEventAdapter(e), int(x + m_staffOffset), width);
+}
+
+void ControllerEventsRuler::eventRemoved(const Segment*, Event *e)
+{
+    if (e->getType() != m_controller->getType())
+        return ;
+
+    clearSelectedItems();
+
+    QCanvasItemList allItems = canvas()->allItems();
+
+    for (QCanvasItemList::Iterator it = allItems.begin(); it != allItems.end(); ++it) {
+        if (ControlItem *item = dynamic_cast<ControlItem*>(*it)) {
+            ControllerEventAdapter * adapter = dynamic_cast<ControllerEventAdapter*>(item->getElementAdapter());
+            if (adapter->getEvent() == e) {
+                delete item;
+                break;
+            }
+        }
+    }
+}
+
+void ControllerEventsRuler::insertControllerEvent()
+{
+    timeT insertTime = m_rulerScale->getTimeForX(m_lastEventPos.x());
+
+
+    // compute initial value from cursor height
+    //
+    long initialValue = heightToValue(m_lastEventPos.y() - canvas()->height());
+
+    RG_DEBUG << "ControllerEventsRuler::insertControllerEvent() : inserting event at "
+    << insertTime
+    << " - initial value = " << initialValue
+    << endl;
+
+    // ask controller number to user
+    long number = 0;
+
+    if (m_controller) {
+        number = m_controller->getControllerValue();
+    } else {
+        bool ok = false;
+        QIntValidator intValidator(0, 128, this);
+        QString res = KLineEditDlg::getText(i18n("Controller Event Number"), "0",
+                                            &ok, this, &intValidator);
+        if (ok)
+            number = res.toULong();
+    }
+
+    ControlRulerEventInsertCommand* command =
+        new ControlRulerEventInsertCommand(m_controller->getType(),
+                                           insertTime, number,
+                                           initialValue, *m_segment);
+
+    m_parentEditView->addCommandToHistory(command);
+}
+
+void ControllerEventsRuler::eraseControllerEvent()
+{
+    RG_DEBUG << "ControllerEventsRuler::eraseControllerEvent() : deleting selected events\n";
+
+    ControlRulerEventEraseCommand* command =
+        new ControlRulerEventEraseCommand(m_selectedItems,
+                                        *m_segment,
+                                        m_eventSelection->getStartTime(),
+                                        m_eventSelection->getEndTime());
+    m_parentEditView->addCommandToHistory(command);
+    updateSelection();
+}
+
+void ControllerEventsRuler::clearControllerEvents()
+{
+    EventSelection *es = new EventSelection(*m_segment);
+
+    for (Segment::iterator it = m_segment->begin(); it != m_segment->end(); ++it) {
+        if (!(*it)->isa(Controller::EventType))
+            continue;
+        {
+            if (m_controller) // ensure we have only the controller events we want for this ruler
+            {
+                try
+                {
+                    if ((*it)->get
+                            <Int>(Controller::NUMBER)
+                            != m_controller->getControllerValue())
+                        continue;
+                } catch (...)
+                {
+                    continue;
+                }
+
+                es->addEvent(*it);
+            }
+        }
+    }
+
+    EraseCommand *command = new EraseCommand(*es);
+    m_parentEditView->addCommandToHistory(command);
+
+}
+
+void ControllerEventsRuler::startControlLine()
+{
+    m_controlLineShowing = true;
+    this->setCursor(Qt::pointingHandCursor);
+}
+
+void ControllerEventsRuler::contentsMousePressEvent(QMouseEvent *e)
+{
+    if (!m_controlLineShowing) {
+        if (e->button() == MidButton)
+            m_lastEventPos = inverseMapPoint(e->pos());
+
+        ControlRuler::contentsMousePressEvent(e); // send super
+
+        return ;
+    }
+
+    // cancel control line mode
+    if (e->button() == RightButton) {
+        m_controlLineShowing = false;
+        m_controlLine->hide();
+
+        this->setCursor(Qt::arrowCursor);
+        return ;
+    }
+
+    if (e->button() == LeftButton) {
+        QPoint p = inverseMapPoint(e->pos());
+
+        m_controlLine->show();
+        m_controlLineX = p.x();
+        m_controlLineY = p.y();
+        m_controlLine->setPoints(m_controlLineX, m_controlLineY, m_controlLineX, m_controlLineY);
+        canvas()->update();
+    }
+}
+
+void ControllerEventsRuler::contentsMouseReleaseEvent(QMouseEvent *e)
+{
+    if (!m_controlLineShowing) {
+        if (e->button() == MidButton)
+            insertControllerEvent();
+
+        ControlRuler::contentsMouseReleaseEvent(e); // send super
+
+        return ;
+    } else {
+        QPoint p = inverseMapPoint(e->pos());
+
+        timeT startTime = m_rulerScale->getTimeForX(m_controlLineX);
+        timeT endTime = m_rulerScale->getTimeForX(p.x());
+
+        long startValue = heightToValue(m_controlLineY - canvas()->height());
+        long endValue = heightToValue(p.y() - canvas()->height());
+
+        RG_DEBUG << "ControllerEventsRuler::contentsMouseReleaseEvent - "
+        << "starttime = " << startTime
+        << ", endtime = " << endTime
+        << ", startValue = " << startValue
+        << ", endValue = " << endValue
+        << endl;
+
+        drawControlLine(startTime, endTime, startValue, endValue);
+
+        m_controlLineShowing = false;
+        m_controlLine->hide();
+        this->setCursor(Qt::arrowCursor);
+        canvas()->update();
+    }
+}
+
+void ControllerEventsRuler::contentsMouseMoveEvent(QMouseEvent *e)
+{
+    if (!m_controlLineShowing) {
+        // Don't send super if we're using the middle button
+        //
+        if (e->button() == MidButton) {
+            m_lastEventPos = inverseMapPoint(e->pos());
+            return ;
+        }
+
+        ControlRuler::contentsMouseMoveEvent(e); // send super
+        return ;
+    }
+
+    QPoint p = inverseMapPoint(e->pos());
+
+    m_controlLine->setPoints(m_controlLineX, m_controlLineY, p.x(), p.y());
+    canvas()->update();
+
+}
+
+void ControllerEventsRuler::layoutItem(ControlItem* item)
+{
+    timeT itemTime = item->getElementAdapter()->getTime();
+
+    double x = m_rulerScale->getXForTime(itemTime) + m_staffOffset;
+
+    item->setX(x);
+
+    int width = getDefaultItemWidth(); // TODO: how to scale that ??
+
+    if (m_controller->getType() == PitchBend::EventType)
+        width /= 4;
+
+    item->setWidth(width);
+
+    //RG_DEBUG << "ControllerEventsRuler::layoutItem ControlItem x = " << x
+    //<< " - width = " << width << endl;
+}
+
+void
+ControllerEventsRuler::drawControlLine(timeT startTime,
+                                       timeT endTime,
+                                       int startValue,
+                                       int endValue)
+{
+    if (m_controller == 0)
+        return ;
+    if (startTime > endTime) {
+        std::swap(startTime, endTime);
+        std::swap(startValue, endValue);
+    }
+
+    timeT quantDur = Note(Note::Quaver).getDuration();
+
+    // If inserting a line of PitchBends then we want a smoother curve
+    //
+    if (m_controller->getType() == PitchBend::EventType)
+        quantDur = Note(Note::Demisemiquaver).getDuration();
+
+    // for the moment enter a quantized set of events
+    timeT time = startTime, newTime = 0;
+    double step = double(endValue - startValue) / double(endTime - startTime);
+
+    KMacroCommand *macro = new KMacroCommand(i18n("Add line of controllers"));
+
+    while (time < endTime) {
+        int value = startValue + int(step * double(time - startTime));
+
+        // hit the buffers
+        if (value < m_controller->getMin())
+            value = m_controller->getMin();
+        else if (value > m_controller->getMax())
+            value = m_controller->getMax();
+
+        ControlRulerEventInsertCommand* command =
+            new ControlRulerEventInsertCommand(m_controller->getType(),
+                                               time, m_controller->getControllerValue(), value, *m_segment);
+
+        macro->addCommand(command);
+
+        // get new time - do it by quantized distances
+        newTime = (time / quantDur) * quantDur;
+        if (newTime > time)
+            time = newTime;
+        else
+            time += quantDur;
+    }
+
+    m_parentEditView->addCommandToHistory(macro);
+}
+
+}