1 files changed, 175 insertions, 0 deletions
diff --git a/src/gui/editors/segment/segmentcanvas/SegmentSplitter.cpp b/src/gui/editors/segment/segmentcanvas/SegmentSplitter.cpp
new file mode 100644
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+++ b/src/gui/editors/segment/segmentcanvas/SegmentSplitter.cpp
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+/* -*- 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 "SegmentSplitter.h"
+
+#include "misc/Debug.h"
+#include "base/Segment.h"
+#include "base/SnapGrid.h"
+#include "commands/segment/AudioSegmentSplitCommand.h"
+#include "commands/segment/SegmentSplitCommand.h"
+#include "CompositionItemHelper.h"
+#include "CompositionView.h"
+#include "document/RosegardenGUIDoc.h"
+#include "gui/general/BaseTool.h"
+#include "gui/general/RosegardenCanvasView.h"
+#include "SegmentTool.h"
+#include <kcommand.h>
+#include <qpoint.h>
+#include <qrect.h>
+#include <qstring.h>
+#include <klocale.h>
+
+
+namespace Rosegarden
+{
+
+SegmentSplitter::SegmentSplitter(CompositionView *c, RosegardenGUIDoc *d)
+        : SegmentTool(c, d),
+        m_prevX(0),
+        m_prevY(0)
+{
+    RG_DEBUG << "SegmentSplitter()\n";
+}
+
+SegmentSplitter::~SegmentSplitter()
+{}
+
+void SegmentSplitter::ready()
+{
+    m_canvas->viewport()->setCursor(Qt::splitHCursor);
+    setBasicContextHelp();
+}
+
+void
+SegmentSplitter::handleMouseButtonPress(QMouseEvent *e)
+{
+    // Remove cursor and replace with line on a SegmentItem
+    // at where the cut will be made
+    CompositionItem item = m_canvas->getFirstItemAt(e->pos());
+
+    if (item) {
+        m_canvas->viewport()->setCursor(Qt::blankCursor);
+        m_prevX = item->rect().x();
+        m_prevX = item->rect().y();
+        drawSplitLine(e);
+        delete item;
+    }
+
+}
+
+void
+SegmentSplitter::handleMouseButtonRelease(QMouseEvent *e)
+{
+    setBasicContextHelp();
+
+    CompositionItem item = m_canvas->getFirstItemAt(e->pos());
+
+    if (item) {
+        m_canvas->setSnapGrain(true);
+        Segment* segment = CompositionItemHelper::getSegment(item);
+
+        if (segment->getType() == Segment::Audio) {
+            AudioSegmentSplitCommand *command =
+                new AudioSegmentSplitCommand(segment, m_canvas->grid().snapX(e->pos().x()));
+            addCommandToHistory(command);
+        } else {
+            SegmentSplitCommand *command =
+                new SegmentSplitCommand(segment, m_canvas->grid().snapX(e->pos().x()));
+            addCommandToHistory(command);
+        }
+
+        m_canvas->updateContents(item->rect());
+        delete item;
+    }
+
+    // Reinstate the cursor
+    m_canvas->viewport()->setCursor(Qt::splitHCursor);
+    m_canvas->slotHideSplitLine();
+}
+
+int
+SegmentSplitter::handleMouseMove(QMouseEvent *e)
+{
+    setBasicContextHelp();
+
+    CompositionItem item = m_canvas->getFirstItemAt(e->pos());
+
+    if (item) {
+//        m_canvas->viewport()->setCursor(Qt::blankCursor);
+        drawSplitLine(e);
+        delete item;
+        return RosegardenCanvasView::FollowHorizontal;
+    } else {
+        m_canvas->viewport()->setCursor(Qt::splitHCursor);
+        m_canvas->slotHideSplitLine();
+        return RosegardenCanvasView::NoFollow;
+    }
+}
+
+void
+SegmentSplitter::drawSplitLine(QMouseEvent *e)
+{
+    m_canvas->setSnapGrain(true);
+
+    // Turn the real X into a snapped X
+    //
+    timeT xT = m_canvas->grid().snapX(e->pos().x());
+    int x = (int)(m_canvas->grid().getRulerScale()->getXForTime(xT));
+
+    // Need to watch y doesn't leak over the edges of the
+    // current Segment.
+    //
+    int y = m_canvas->grid().snapY(e->pos().y());
+
+    m_canvas->slotShowSplitLine(x, y);
+
+    QRect updateRect(std::max(0, std::min(x, m_prevX) - 5), y,
+                     std::max(m_prevX, x) + 5, m_prevY + m_canvas->grid().getYSnap());
+    m_canvas->updateContents(updateRect);
+    m_prevX = x;
+    m_prevY = y;
+}
+
+void
+SegmentSplitter::contentsMouseDoubleClickEvent(QMouseEvent*)
+{
+    // DO NOTHING
+}
+
+void
+SegmentSplitter::setBasicContextHelp()
+{
+    if (!m_canvas->isFineGrain()) {
+        setContextHelp(i18n("Click on a segment to split it in two; hold Shift to avoid snapping to beat grid"));
+    } else {
+        setContextHelp(i18n("Click on a segment to split it in two"));
+    }
+}
+
+const QString SegmentSplitter::ToolName = "segmentsplitter";
+
+}
+#include "SegmentSplitter.moc"