void SegmentSelector::setContextHelpFor(QPoint pos,
Qt::KeyboardModifiers modifiers)
{
// If we are moving something
if (m_selectionMoveStarted)
{
const bool shift = ((modifiers & Qt::ShiftModifier) != 0);
// If shift isn't being held down
if (!shift) {
setContextHelp(tr("Hold Shift to avoid snapping to beat grid"));
} else {
clearContextHelp();
}
return;
}
ChangingSegmentPtr segment = m_canvas->getModel()->getSegmentAt(pos);
// If the mouse is hovering over the background
if (!segment) {
setContextHelp(tr("Click and drag to select segments; middle-click and drag to draw an empty segment"));
return;
}
// The mouse is hovering over a segment.
const bool ctrl = ((modifiers & Qt::ControlModifier) != 0);
// If clicking would resize
if (m_canvas->getModel()->getSelectedSegments().size() <= 1 &&
isNearEdge(segment->rect(), pos)) {
if (!ctrl) {
setContextHelp(tr("Click and drag to resize a segment; hold Ctrl as well to rescale its contents"));
} else {
setContextHelp(tr("Click and drag to rescale segment"));
}
} else { // clicking would move
if (m_canvas->getModel()->haveMultipleSelection()) {
if (!ctrl) {
setContextHelp(tr("Click and drag to move segments; hold Ctrl as well to copy them; Ctrl + Alt for linked copies"));
} else {
setContextHelp(tr("Click and drag to copy segments"));
}
} else {
if (!ctrl) {
setContextHelp(tr("Click and drag to move segment; hold Ctrl as well to copy it; Ctrl + Alt for a linked copy; double-click to edit"));
} else {
setContextHelp(tr("Click and drag to copy segment"));
}
}
}
}
void SegmentMover::mousePressEvent(QMouseEvent *e)
{
// Let the baseclass have a go.
SegmentTool::mousePressEvent(e);
// We only care about the left mouse button.
if (e->button() != Qt::LeftButton)
return;
// No need to propagate.
e->accept();
QPoint pos = m_canvas->viewportToContents(e->pos());
CompositionModelImpl *model = m_canvas->getModel();
// Get the Segment that was clicked.
ChangingSegmentPtr changingSegment = model->getSegmentAt(pos);
// If the segment canvas background was clicked, clear the selection.
if (!changingSegment) {
model->clearSelected();
model->selectionHasChanged();
m_canvas->update();
return;
}
// The original segment in the composition.
Segment *segment = changingSegment->getSegment();
// If we're clicking on a segment that isn't in the selection
if (!model->isSelected(segment)) {
// Clear the selection.
model->clearSelected();
model->selectionHasChanged();
}
setChangingSegment(changingSegment);
m_clickPoint = pos;
setSnapTime(e, SnapGrid::SnapToBeat);
int x = int(m_canvas->grid().getRulerScale()->getXForTime(
segment->getStartTime()));
int y = m_canvas->grid().getYBinCoordinate(segment->getTrack());
m_canvas->drawGuides(x, y);
// If some segments are already selected
if (model->haveSelection()) {
// Start the move on all selected segments
model->startChangeSelection(CompositionModelImpl::ChangeMove);
// Find the clicked segment in the model.
ChangingSegmentPtr newChangingSegment =
model->findChangingSegment(segment);
if (newChangingSegment) {
// Toss the local "changing" segment since it isn't going to
// be moving at all. Swap it for the same changing segment in
// the model. That one *will* be moving and can be used to
// drive the guides.
setChangingSegment(newChangingSegment);
}
} else { // Nothing selected, just move the one that was clicked
model->startChange(changingSegment, CompositionModelImpl::ChangeMove);
}
m_canvas->update();
}
int SegmentMover::mouseMoveEvent(QMouseEvent *e)
{
// No need to propagate.
e->accept();
// If we aren't moving anything, bail.
if (!getChangingSegment())
return RosegardenScrollView::NoFollow;
QPoint pos = m_canvas->viewportToContents(e->pos());
setSnapTime(e, SnapGrid::SnapToBeat);
// If shift isn't being held down
if ((e->modifiers() & Qt::ShiftModifier) == 0) {
setContextHelp(tr("Hold Shift to avoid snapping to beat grid"));
} else {
clearContextHelp();
}
const SnapGrid &grid = m_canvas->grid();
// Compute how far we've moved vertically.
const int startTrackPos = grid.getYBin(m_clickPoint.y());
const int currentTrackPos = grid.getYBin(pos.y());
const int deltaTrack = currentTrackPos - startTrackPos;
const int dx = pos.x() - m_clickPoint.x();
Composition &comp = m_doc->getComposition();
CompositionModelImpl::ChangingSegmentSet &changingSegments =
m_canvas->getModel()->getChangingSegments();
// For each changing segment, move it
for (CompositionModelImpl::ChangingSegmentSet::iterator it =
changingSegments.begin();
it != changingSegments.end();
++it) {
ChangingSegmentPtr changingSegment = *it;
const timeT newStartTime = grid.snapX(changingSegment->savedRect().x() + dx);
const int newX = int(grid.getRulerScale()->getXForTime(newStartTime));
int trackPos = grid.getYBin(changingSegment->savedRect().y()) + deltaTrack;
if (trackPos < 0)
trackPos = 0;
if (trackPos >= (int)comp.getNbTracks())
trackPos = comp.getNbTracks() - 1;
const int newY = grid.getYBinCoordinate(trackPos);
changingSegment->moveTo(newX, newY);
m_changeMade = true;
}
if (m_changeMade) {
// Make sure the segments are redrawn.
m_canvas->slotUpdateAll();
}
// Draw the guides
int guideX = getChangingSegment()->rect().x();
int guideY = getChangingSegment()->rect().y();
m_canvas->drawGuides(guideX, guideY);
// Format and draw the text float
timeT guideTime = grid.snapX(guideX);
RealTime time = comp.getElapsedRealTime(guideTime);
int bar, beat, fraction, remainder;
comp.getMusicalTimeForAbsoluteTime(guideTime, bar, beat, fraction, remainder);
QString timeString = QString("%1.%2s (%3, %4, %5)")
.arg(time.sec).arg(time.msec(), 3, 10, QChar('0'))
.arg(bar + 1).arg(beat).arg(fraction);
m_canvas->drawTextFloat(guideX + 10, guideY - 30, timeString);
m_canvas->update();
return RosegardenScrollView::FollowHorizontal |
RosegardenScrollView::FollowVertical;
}
void SegmentMover::mouseReleaseEvent(QMouseEvent *e)
{
// We only care about the left mouse button.
if (e->button() != Qt::LeftButton)
return;
// No need to propagate.
e->accept();
// If we weren't moving anything, bail.
if (!getChangingSegment())
return;
if (m_changeMade) {
QPoint pos = m_canvas->viewportToContents(e->pos());
// Compute how far we've moved vertically.
const int startTrackPos = m_canvas->grid().getYBin(m_clickPoint.y());
const int currentTrackPos = m_canvas->grid().getYBin(pos.y());
const int deltaTrack = currentTrackPos - startTrackPos;
CompositionModelImpl::ChangingSegmentSet &changingSegments =
m_canvas->getModel()->getChangingSegments();
Composition &comp = m_doc->getComposition();
SegmentReconfigureCommand *command =
new SegmentReconfigureCommand(
changingSegments.size() == 1 ?
tr("Move Segment") :
tr("Move Segments"),
&comp);
// For each changing segment
for (CompositionModelImpl::ChangingSegmentSet::iterator it =
changingSegments.begin();
it != changingSegments.end();
++it) {
ChangingSegmentPtr changingSegment = *it;
// The original Segment in the Composition.
Segment *segment = changingSegment->getSegment();
// New Track ID
TrackId origTrackId = segment->getTrack();
int trackPos = comp.getTrackPositionById(origTrackId) + deltaTrack;
if (trackPos < 0) {
trackPos = 0;
} else if (trackPos >= (int)comp.getNbTracks()) {
trackPos = comp.getNbTracks() - 1;
}
Track *newTrack = comp.getTrackByPosition(trackPos);
int newTrackId = origTrackId;
if (newTrack)
newTrackId = newTrack->getId();
// New start time
timeT newStartTime = changingSegment->getStartTime(m_canvas->grid());
// New end time
// 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(false) - segment->getStartTime();
// Add the changed segment to the command
command->addSegment(segment,
newStartTime,
newEndTime,
newTrackId);
}
CommandHistory::getInstance()->addCommand(command);
m_changeMade = false;
}
m_canvas->hideTextFloat();
m_canvas->hideGuides();
m_canvas->getModel()->endChange();
m_canvas->slotUpdateAll();
setChangingSegment(ChangingSegmentPtr());
setBasicContextHelp();
}
void
SegmentSelector::mousePressEvent(QMouseEvent *e)
{
// Let the baseclass have a go.
SegmentTool::mousePressEvent(e);
// We only care about the left and middle mouse buttons.
if (e->button() != Qt::LeftButton &&
e->button() != Qt::MidButton)
return;
// No need to propagate.
e->accept();
QPoint pos = m_canvas->viewportToContents(e->pos());
// Get the segment that was clicked.
ChangingSegmentPtr item = m_canvas->getModel()->getSegmentAt(pos);
// If middle button...
if (e->button() == Qt::MidButton) {
// If clicked on the background, create a new segment.
if (!item) {
m_dispatchTool = m_canvas->getToolBox()->getTool(SegmentPencil::ToolName());
if (m_dispatchTool) {
m_dispatchTool->ready(); // set mouse cursor
m_dispatchTool->mousePressEvent(e);
}
}
return;
}
// Left button was pressed.
// ??? Should we split this into a midPress(e) and a leftPress(e)?
// Might improve readability a little.
// *** Adjust Selection
// Shift key adds to selection.
m_segmentAddMode = ((e->modifiers() & Qt::ShiftModifier) != 0);
// if a segment was clicked
if (item) {
bool selected = m_canvas->getModel()->isSelected(item->getSegment());
if (m_segmentAddMode) {
// toggle item selection
m_canvas->getModel()->setSelected(item->getSegment(), !selected);
} else {
if (!selected) {
// make the item the selection
m_canvas->getModel()->clearSelected();
m_canvas->getModel()->setSelected(item->getSegment());
}
}
} else { // the background was clicked
if (!m_segmentAddMode) {
// clear the selection
m_canvas->getModel()->clearSelected();
}
}
// *** Perform Functions
bool ctrl = ((e->modifiers() & Qt::ControlModifier) != 0);
// if a segment was clicked
if (item) {
// * Resize
// if only one segment is selected and clicked near the edge, resize
if (m_canvas->getModel()->getSelectedSegments().size() == 1 &&
isNearEdge(item->rect(), pos)) {
SegmentResizer *segmentResizer = dynamic_cast<SegmentResizer *>(
m_canvas->getToolBox()->getTool(SegmentResizer::ToolName()));
// Turn it over to SegmentResizer.
m_dispatchTool = segmentResizer;
m_dispatchTool->ready(); // set mouse cursor
m_dispatchTool->mousePressEvent(e);
return;
}
// * Move
// We don't dispatch to SegmentMover because SegmentMover
// doesn't support copying/linking.
bool alt = ((e->modifiers() & Qt::AltModifier) != 0);
// Ctrl and Alt+Ctrl are segment copy.
m_segmentCopyMode = ctrl;
// Alt+Ctrl is copy as link.
m_segmentCopyingAsLink = (alt && ctrl);
// If the segment is selected, put it in move mode.
if (m_canvas->getModel()->isSelected(item->getSegment())) {
m_canvas->getModel()->startChange(
item, CompositionModelImpl::ChangeMove);
}
setChangingSegment(item);
m_clickPoint = pos;
int guideX = item->rect().x();
int guideY = item->rect().y();
m_canvas->drawGuides(guideX, guideY);
setSnapTime(e, SnapGrid::SnapToBeat);
} else { // the background was clicked
if (ctrl) {
// * Create Segment
m_dispatchTool = m_canvas->getToolBox()->getTool(
SegmentPencil::ToolName());
if (m_dispatchTool) {
m_dispatchTool->ready(); // set mouse cursor
m_dispatchTool->mousePressEvent(e);
}
return;
}
// * Rubber Band
m_canvas->drawSelectionRectPos1(pos);
}
// Make sure the Segment Parameters box is updated. See
// RosegardenMainViewWidget::slotSelectedSegments().
m_canvas->getModel()->selectionHasChanged();
m_passedInertiaEdge = false;
}
int
SegmentSelector::mouseMoveEvent(QMouseEvent *e)
{
// No need to propagate.
e->accept();
QPoint pos = m_canvas->viewportToContents(e->pos());
m_lastMousePos = pos;
// If no buttons are pressed, update the context help and bail.
// Note: Mouse tracking must be on for this to work. See
// QWidget::setMouseTracking().
if (e->buttons() == Qt::NoButton) {
setContextHelpFor(pos, e->modifiers());
return RosegardenScrollView::NoFollow;
}
// If another tool has taken over, delegate.
if (m_dispatchTool)
return m_dispatchTool->mouseMoveEvent(e);
// We only handle the left button. The middle button is handled by
// the dispatch tool (segment pencil) or ignored.
if (e->buttons() != Qt::LeftButton)
return RosegardenScrollView::NoFollow;
// If we aren't moving anything, rubber band.
if (!getChangingSegment()) {
m_canvas->drawSelectionRectPos2(pos);
m_canvas->getModel()->selectionHasChanged();
return RosegardenScrollView::FollowHorizontal |
RosegardenScrollView::FollowVertical;
}
// Moving
// If the segment that was clicked on isn't selected, bail.
if (!m_canvas->getModel()->isSelected(getChangingSegment()->getSegment()))
return RosegardenScrollView::NoFollow;
const int dx = pos.x() - m_clickPoint.x();
const int dy = pos.y() - m_clickPoint.y();
const int inertiaDistance = 8;
// If we've not already exceeded the inertia distance, and we
// still haven't, bail.
if (!m_passedInertiaEdge &&
abs(dx) < inertiaDistance &&
abs(dy) < inertiaDistance) {
return RosegardenScrollView::NoFollow;
}
m_passedInertiaEdge = true;
m_canvas->viewport()->setCursor(Qt::SizeAllCursor);
#if 0
// ??? Moving to mouseReleaseEvent().
if (m_segmentCopyMode && !m_segmentQuickCopyDone) {
// Make copies of the original Segment(s). These copies will
// take the place of the originals as the user drags the
// the originals to a new location.
MacroCommand *macroCommand = 0;
if (m_segmentCopyingAsLink) {
macroCommand = new MacroCommand(
SegmentQuickLinkCommand::getGlobalName());
} else {
macroCommand = new MacroCommand(
SegmentQuickCopyCommand::getGlobalName());
}
SegmentSelection selectedItems = m_canvas->getSelectedSegments();
// for each selected segment
for (SegmentSelection::iterator it = selectedItems.begin();
it != selectedItems.end();
++it) {
Segment *segment = *it;
Command *command = 0;
if (m_segmentCopyingAsLink) {
command = new SegmentQuickLinkCommand(segment);
} else {
// if it's a link, copy as link
if (segment->isTrulyLinked())
command = new SegmentQuickLinkCommand(segment);
else // copy as a non-link segment
command = new SegmentQuickCopyCommand(segment);
}
macroCommand->addCommand(command);
}
CommandHistory::getInstance()->addCommand(macroCommand);
m_canvas->update();
// Make sure we don't do it again.
m_segmentQuickCopyDone = true;
}
#endif
setSnapTime(e, SnapGrid::SnapToBeat);
// start move on selected items only once
if (!m_selectionMoveStarted) {
m_selectionMoveStarted = true;
m_canvas->getModel()->startChangeSelection(
m_segmentCopyMode ? CompositionModelImpl::ChangeCopy :
CompositionModelImpl::ChangeMove);
// The call to startChangeSelection() generates a new changing segment.
// Get it.
ChangingSegmentPtr newChangingSegment =
m_canvas->getModel()->findChangingSegment(
getChangingSegment()->getSegment());
if (newChangingSegment) {
// Toss the local "changing" segment since it isn't going to
// be moving at all. Swap it for the same changing segment in
// CompositionModelImpl. That one *will* be moving and can be
// used to drive the guides.
setChangingSegment(newChangingSegment);
}
}
// Display help for the Shift key.
setContextHelpFor(pos, e->modifiers());
Composition &comp = m_doc->getComposition();
const int startDragTrackPos = m_canvas->grid().getYBin(m_clickPoint.y());
const int currentTrackPos = m_canvas->grid().getYBin(pos.y());
const int trackDiff = currentTrackPos - startDragTrackPos;
CompositionModelImpl::ChangingSegmentSet &changingSegments =
m_canvas->getModel()->getChangingSegments();
// For each changing segment
for (CompositionModelImpl::ChangingSegmentSet::iterator it =
changingSegments.begin();
it != changingSegments.end();
++it) {
ChangingSegmentPtr changingSegment = *it;
const timeT newStartTime = m_canvas->grid().snapX(
changingSegment->savedRect().x() + dx);
const int newX = lround(
m_canvas->grid().getRulerScale()->getXForTime(newStartTime));
int newTrackPos = m_canvas->grid().getYBin(
changingSegment->savedRect().y()) + trackDiff;
// Limit to [0, comp.getNbTracks()-1].
if (newTrackPos < 0)
newTrackPos = 0;
if (newTrackPos > static_cast<int>(comp.getNbTracks()) - 1)
newTrackPos = comp.getNbTracks() - 1;
const int newY = m_canvas->grid().getYBinCoordinate(newTrackPos);
changingSegment->moveTo(newX, newY);
m_changeMade = true;
}
if (m_changeMade) {
// Make sure the segments are redrawn.
// Note: The update() call below doesn't cause the segments to be
// redrawn. It just updates from the cache.
m_canvas->slotUpdateAll();
}
// Guides
const int guideX = getChangingSegment()->rect().x();
const int guideY = getChangingSegment()->rect().y();
m_canvas->drawGuides(guideX, guideY);
// Text Float
const timeT guideTime = m_canvas->grid().snapX(guideX);
RealTime time = comp.getElapsedRealTime(guideTime);
QString msecs;
msecs.sprintf("%03d", time.msec());
int bar;
int beat;
int fraction;
int remainder;
comp.getMusicalTimeForAbsoluteTime(guideTime, bar, beat, fraction, remainder);
QString posString = QString("%1.%2s (%3, %4, %5)").
arg(time.sec).arg(msecs).arg(bar + 1).arg(beat).arg(fraction);
m_canvas->drawTextFloat(guideX + 10, guideY - 30, posString);
m_canvas->update();
return RosegardenScrollView::FollowHorizontal |
RosegardenScrollView::FollowVertical;
}
void
SegmentSelector::mouseReleaseEvent(QMouseEvent *e)
{
// We only care about the left and middle mouse buttons.
if (e->button() != Qt::LeftButton &&
e->button() != Qt::MidButton)
return;
// No need to propagate.
e->accept();
QPoint pos = m_canvas->viewportToContents(e->pos());
// If another tool (SegmentPencil or SegmentResizer) has taken
// over, delegate.
if (m_dispatchTool) {
m_dispatchTool->mouseReleaseEvent(e);
m_dispatchTool->stow();
// Forget about the tool.
// Note that this is not a memory leak. There is only one instance
// of each tool stored in BaseToolBox::m_tools.
m_dispatchTool = 0;
// Back to this tool.
ready();
return;
}
// We only handle the left button. The middle button is handled by
// the dispatch tool (segment pencil) or ignored.
if (e->button() != Qt::LeftButton)
return;
// The left button has been released.
m_canvas->hideGuides();
m_canvas->hideTextFloat();
// If rubber band mode
if (!getChangingSegment()) {
m_canvas->hideSelectionRect();
m_canvas->getModel()->finalizeSelectionRect();
m_canvas->getModel()->selectionHasChanged();
return;
}
m_canvas->viewport()->setCursor(Qt::ArrowCursor);
if (m_canvas->getModel()->isSelected(getChangingSegment()->getSegment())) {
if (m_changeMade) {
MacroCommand *macroCommand = 0;
CompositionModelImpl::ChangingSegmentSet &changingSegments =
m_canvas->getModel()->getChangingSegments();
if (m_segmentCopyMode) {
if (m_segmentCopyingAsLink) {
macroCommand = new MacroCommand(
tr("Copy %n Segment(s) as link(s)", "", changingSegments.size()));
} else {
macroCommand = new MacroCommand(
tr("Copy %n Segment(s)", "", changingSegments.size()));
}
} else {
macroCommand = new MacroCommand(
tr("Move %n Segment(s)", "", changingSegments.size()));
}
if (m_segmentCopyMode) {
// Make copies of the original Segment(s). These copies will
// take the place of the originals.
SegmentSelection selectedItems = m_canvas->getSelectedSegments();
// for each selected segment
for (SegmentSelection::iterator it = selectedItems.begin();
it != selectedItems.end();
++it) {
Segment *segment = *it;
Command *command = 0;
if (m_segmentCopyingAsLink) {
command = new SegmentQuickLinkCommand(segment);
} else {
// if it's a link, copy as link
if (segment->isTrulyLinked())
command = new SegmentQuickLinkCommand(segment);
else // copy as a non-link segment
command = new SegmentQuickCopyCommand(segment);
}
macroCommand->addCommand(command);
}
}
const int startDragTrackPos =
m_canvas->grid().getYBin(m_clickPoint.y());
const int currentTrackPos = m_canvas->grid().getYBin(pos.y());
const int trackDiff = currentTrackPos - startDragTrackPos;
Composition &comp = m_doc->getComposition();
SegmentReconfigureCommand *segmentReconfigureCommand =
new SegmentReconfigureCommand("", &comp);
// For each changing segment, add the segment to the
// SegmentReconfigureCommand.
for (CompositionModelImpl::ChangingSegmentSet::iterator it =
changingSegments.begin();
it != changingSegments.end();
++it) {
ChangingSegmentPtr changingSegment = *it;
Segment *segment = changingSegment->getSegment();
TrackId origTrackId = segment->getTrack();
int newTrackPos =
comp.getTrackPositionById(origTrackId) + trackDiff;
// Limit to [0, comp.getNbTracks()-1]
if (newTrackPos < 0)
newTrackPos = 0;
if (newTrackPos > static_cast<int>(comp.getNbTracks()) - 1)
newTrackPos = comp.getNbTracks() - 1;
Track *newTrack = comp.getTrackByPosition(newTrackPos);
int newTrackId = origTrackId;
if (newTrack)
newTrackId = newTrack->getId();
timeT startTime =
changingSegment->getStartTime(m_canvas->grid());
// endTime = startTime + segment duration
// 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 endTime = startTime +
segment->getEndMarkerTime(false) -
segment->getStartTime();
segmentReconfigureCommand->addSegment(
segment, startTime, endTime, newTrackId);
}
macroCommand->addCommand(segmentReconfigureCommand);
CommandHistory::getInstance()->addCommand(macroCommand);
m_canvas->update();
}
m_canvas->getModel()->endChange();
m_canvas->slotUpdateAll();
}
// Get ready for the next button press.
m_segmentQuickCopyDone = false;
m_changeMade = false;
m_selectionMoveStarted = false;
setChangingSegment(ChangingSegmentPtr());
setContextHelpFor(pos);
}