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/***
Olive - Non-Linear Video Editor
Copyright (C) 2019 Olive Team
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 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
***/
#include "inputdragger.h"
#include "core.h"
#include "node.h"
#include "widget/nodeparamview/nodeparamviewundo.h"
OLIVE_NAMESPACE_ENTER
NodeInputDragger::NodeInputDragger() :
input_(nullptr)
{
}
bool NodeInputDragger::IsStarted() const
{
return input_;
}
void NodeInputDragger::Start(NodeInput *input, const rational &time, int track)
{
Q_ASSERT(!input_);
// Set up new drag
input_ = input;
time_ = time;
track_ = track;
// Cache current value
start_value_ = input_->get_value_at_time_for_track(time, track);
// Determine whether we are creating a keyframe or not
if (input_->is_keyframing()) {
dragging_key_ = input_->get_keyframe_at_time_on_track(time, track);
drag_created_key_ = !dragging_key_;
if (drag_created_key_) {
dragging_key_ = NodeKeyframe::Create(time,
start_value_,
input_->get_best_keyframe_type_for_time(time, track),
track);
// We disable default signal emitting during the drag
//input_->blockSignals(true);
input_->insert_keyframe(dragging_key_);
//input_->blockSignals(false);
emit input_->KeyframeAdded(dragging_key_);
}
}
}
void NodeInputDragger::Drag(const QVariant& value)
{
Q_ASSERT(input_);
end_value_ = value;
//input_->blockSignals(true);
if (input_->is_keyframing()) {
dragging_key_->set_value(value);
} else {
input_->set_standard_value(value, track_);
}
//input_->blockSignals(false);
}
void NodeInputDragger::End()
{
if (!IsStarted()) {
return;
}
QUndoCommand* command = new QUndoCommand();
if (input_->is_keyframing()) {
if (drag_created_key_) {
// We created a keyframe in this process
new NodeParamInsertKeyframeCommand(input_, dragging_key_, true, command);
}
// We just set a keyframe's value
// We do this even when inserting a keyframe because we don't actually perform an insert in this undo command
// so this will ensure the ValueChanged() signal is sent correctly
new NodeParamSetKeyframeValueCommand(dragging_key_, end_value_, start_value_, command);
} else {
// We just set the standard value
new NodeParamSetStandardValueCommand(input_, track_, end_value_, start_value_, command);
}
Core::instance()->undo_stack()->push(command);
input_ = nullptr;
}
OLIVE_NAMESPACE_EXIT
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