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nodeview: implemented moving with either the hand tool or middle mouse button

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Includes splitting off this functionality from TimelineViewBase so it can be
re-used in any QGraphicsView.
This commit is contained in:
itsmattkc
2020-04-29 04:56:58 +10:00
parent 366945fd29
commit 8ab91a70cc
7 changed files with 202 additions and 112 deletions
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app/widget/timelinewidget/view/timelineviewbase.cpp
+1 -89
View File
@@ -34,12 +34,11 @@ OLIVE_NAMESPACE_ENTER
const double TimelineViewBase::kMaximumScale = 8192;
TimelineViewBase::TimelineViewBase(QWidget *parent) :
QGraphicsView(parent),
HandMovableView(parent),
playhead_(0),
playhead_scene_left_(-1),
playhead_scene_right_(-1),
dragging_playhead_(false),
dragging_hand_(false),
limit_y_axis_(false)
{
setScene(&scene_);
@@ -50,7 +49,6 @@ TimelineViewBase::TimelineViewBase(QWidget *parent) :
SetDefaultDragMode(NoDrag);
connect(&scene_, SIGNAL(changed(const QList<QRectF>&)), this, SLOT(UpdateSceneRect()));
connect(Core::instance(), &Core::ToolChanged, this, &TimelineViewBase::ApplicationToolChanged);
SetMaximumScale(kMaximumScale);
}
@@ -100,17 +98,6 @@ rational TimelineViewBase::GetPlayheadTime() const
return Timecode::timestamp_to_time(playhead_, timebase());
}
void TimelineViewBase::SetDefaultDragMode(QGraphicsView::DragMode mode)
{
default_drag_mode_ = mode;
setDragMode(default_drag_mode_);
}
const QGraphicsView::DragMode &TimelineViewBase::GetDefaultDragMode() const
{
return default_drag_mode_;
}
bool TimelineViewBase::PlayheadPress(QMouseEvent *event)
{
QPointF scene_pos = mapToScene(event->pos());
@@ -148,70 +135,6 @@ bool TimelineViewBase::PlayheadRelease(QMouseEvent*)
return false;
}
bool TimelineViewBase::HandPress(QMouseEvent *event)
{
if (event->button() == Qt::MiddleButton) {
pre_hand_drag_mode_ = dragMode();
dragging_hand_ = true;
setDragMode(ScrollHandDrag);
// Transform mouse event to act like the left button is pressed
QMouseEvent transformed(event->type(),
event->localPos(),
Qt::LeftButton,
Qt::LeftButton,
event->modifiers());
QGraphicsView::mousePressEvent(&transformed);
return true;
}
return false;
}
bool TimelineViewBase::HandMove(QMouseEvent *event)
{
if (dragging_hand_) {
// Transform mouse event to act like the left button is pressed
QMouseEvent transformed(event->type(),
event->localPos(),
Qt::LeftButton,
Qt::LeftButton,
event->modifiers());
QGraphicsView::mouseMoveEvent(&transformed);
}
return dragging_hand_;
}
bool TimelineViewBase::HandRelease(QMouseEvent *event)
{
if (dragging_hand_) {
// Transform mouse event to act like the left button is pressed
QMouseEvent transformed(event->type(),
event->localPos(),
Qt::LeftButton,
Qt::LeftButton,
event->modifiers());
QGraphicsView::mouseReleaseEvent(&transformed);
setDragMode(pre_hand_drag_mode_);
dragging_hand_ = false;
return true;
}
return false;
}
void TimelineViewBase::ToolChangedEvent(Tool::Item)
{
}
qreal TimelineViewBase::GetPlayheadX()
{
return TimeToScene(Timecode::timestamp_to_time(playhead_, timebase()));
@@ -305,15 +228,4 @@ void TimelineViewBase::SetLimitYAxis(bool)
UpdateSceneRect();
}
void TimelineViewBase::ApplicationToolChanged(Tool::Item tool)
{
if (tool == Tool::kHand) {
setDragMode(ScrollHandDrag);
} else {
setDragMode(default_drag_mode_);
}
ToolChangedEvent(tool);
}
OLIVE_NAMESPACE_EXIT