itsmattkc
0469fac4a9
When dragging a value in the UI, we use a "single frame update" because we want to prioritize the currently visible frame to give visual feedback as soon as possible. Previously, we generated a single frame InvalidateCache() signal from the widgets themselves, but this had the major downside of not necessarily emitting the time that the viewer was actually showing (due to either node time transformations or times differing between the effects panels and the viewer panels). Now, we send a different signal that viewers can handle themselves to update the time that they're currently showing. This means the fast updating will work no matter how many viewers are connected at whatever time each viewer is set to.
434 lines
13 KiB
C++
434 lines
13 KiB
C++
#include "keyframeviewbase.h"
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#include <QMouseEvent>
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#include <QVBoxLayout>
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#include "dialog/keyframeproperties/keyframeproperties.h"
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#include "keyframeviewundo.h"
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#include "node/node.h"
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#include "widget/menu/menu.h"
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#include "widget/menu/menushared.h"
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#include "widget/nodeparamview/nodeparamviewundo.h"
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KeyframeViewBase::KeyframeViewBase(QWidget *parent) :
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TimelineViewBase(parent),
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y_scale_(1.0),
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dragging_bezier_point_(nullptr),
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y_axis_enabled_(false)
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{
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SetDefaultDragMode(RubberBandDrag);
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setContextMenuPolicy(Qt::CustomContextMenu);
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connect(this, &KeyframeViewBase::customContextMenuRequested, this, &KeyframeViewBase::ShowContextMenu);
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}
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void KeyframeViewBase::Clear()
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{
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QMap<NodeKeyframe*, KeyframeViewItem*>::iterator iterator;
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for (iterator=item_map_.begin();iterator!=item_map_.end();iterator++) {
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delete iterator.value();
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}
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item_map_.clear();
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}
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const double &KeyframeViewBase::GetYScale() const
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{
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return y_scale_;
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}
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void KeyframeViewBase::SetYScale(const double &y_scale)
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{
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y_scale_ = y_scale;
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if (y_axis_enabled_) {
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VerticalScaleChangedEvent(y_scale_);
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viewport()->update();
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}
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}
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void KeyframeViewBase::RemoveKeyframe(NodeKeyframePtr key)
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{
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KeyframeAboutToBeRemoved(key.get());
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delete item_map_.take(key.get());
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}
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KeyframeViewItem *KeyframeViewBase::AddKeyframeInternal(NodeKeyframePtr key)
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{
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KeyframeViewItem* item = new KeyframeViewItem(key);
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item->SetScale(scale_);
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item_map_.insert(key.get(), item);
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scene()->addItem(item);
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return item;
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}
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void KeyframeViewBase::mousePressEvent(QMouseEvent *event)
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{
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if (HandPress(event) || PlayheadPress(event)) {
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return;
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}
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active_tool_ = Core::instance()->tool();
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if (event->button() == Qt::LeftButton) {
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QGraphicsView::mousePressEvent(event);
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if (active_tool_ == Tool::kPointer) {
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QGraphicsItem* item_under_cursor = itemAt(event->pos());
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if (item_under_cursor) {
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drag_start_ = event->pos();
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// Determine what type of item is under the cursor
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dragging_bezier_point_ = dynamic_cast<BezierControlPointItem*>(item_under_cursor);
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if (dragging_bezier_point_) {
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dragging_bezier_point_start_ = dragging_bezier_point_->GetCorrespondingKeyframeHandle();
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dragging_bezier_point_opposing_start_ = dragging_bezier_point_->key()->bezier_control(NodeKeyframe::get_opposing_bezier_type(dragging_bezier_point_->mode()));
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} else {
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QList<QGraphicsItem*> selected_items = scene()->selectedItems();
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selected_keys_.resize(selected_items.size());
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for (int i=0;i<selected_items.size();i++) {
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KeyframeViewItem* key = static_cast<KeyframeViewItem*>(selected_items.at(i));
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selected_keys_.replace(i, {key, key->x(), key->key()->time(), key->key()->value().toDouble()});
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}
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}
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}
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}
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}
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}
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void KeyframeViewBase::mouseMoveEvent(QMouseEvent *event)
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{
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if (HandMove(event) || PlayheadMove(event)) {
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return;
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}
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if (event->buttons() & Qt::LeftButton) {
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QGraphicsView::mouseMoveEvent(event);
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if (active_tool_ == Tool::kPointer) {
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// Calculate cursor difference and scale it
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QPointF mouse_diff_scaled = GetScaledCursorPos(event->pos() - drag_start_);
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if (dragging_bezier_point_) {
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ProcessBezierDrag(mouse_diff_scaled,
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!(event->modifiers() & Qt::ControlModifier),
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false);
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} else if (!selected_keys_.isEmpty()) {
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foreach (const KeyframeItemAndTime& keypair, selected_keys_) {
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NodeInput* input_parent = keypair.key->key()->parent();
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input_parent->blockSignals(true);
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keypair.key->key()->set_time(CalculateNewTimeFromScreen(keypair.time, mouse_diff_scaled.x()));
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if (y_axis_enabled_) {
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keypair.key->key()->set_value(keypair.value - mouse_diff_scaled.y());
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}
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// We emit a custom value changed signal while the keyframe is being dragged so only the currently viewed
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// frame gets rendered in this time
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input_parent->blockSignals(false);
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input_parent->parentNode()->InvalidateVisible(input_parent);
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}
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}
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}
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}
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}
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void KeyframeViewBase::mouseReleaseEvent(QMouseEvent *event)
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{
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if (HandRelease(event) || PlayheadRelease(event)) {
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return;
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}
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if (event->button() == Qt::LeftButton) {
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QGraphicsView::mouseReleaseEvent(event);
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if (active_tool_ == Tool::kPointer) {
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QPoint mouse_diff = event->pos() - drag_start_;
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QPointF mouse_diff_scaled = GetScaledCursorPos(mouse_diff);
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if (!mouse_diff.isNull()) {
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if (dragging_bezier_point_) {
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ProcessBezierDrag(mouse_diff_scaled,
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!(event->modifiers() & Qt::ControlModifier),
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true);
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dragging_bezier_point_ = nullptr;
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} else if (!selected_keys_.isEmpty()) {
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QUndoCommand* command = new QUndoCommand();
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foreach (const KeyframeItemAndTime& keypair, selected_keys_) {
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KeyframeViewItem* item = keypair.key;
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keypair.key->key()->parent()->blockSignals(true);
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// Calculate the new time for this keyframe
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rational new_time = CalculateNewTimeFromScreen(keypair.time, mouse_diff_scaled.x());
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// Commit movement
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// Since we overrode the cache signalling while dragging, we simulate here precisely the change that
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// occurred by first setting the keyframe to its original position, and then letting the input handle
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// the signalling once the undo command is pushed.
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item->key()->set_time(keypair.time);
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new NodeParamSetKeyframeTimeCommand(item->key(),
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new_time,
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keypair.time,
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command);
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// Commit value if we're setting a value
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if (y_axis_enabled_) {
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item->key()->set_value(keypair.value);
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new NodeParamSetKeyframeValueCommand(item->key(),
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keypair.value - mouse_diff_scaled.y(),
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keypair.value,
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command);
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}
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keypair.key->key()->parent()->blockSignals(false);
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}
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Core::instance()->undo_stack()->push(command);
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}
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}
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selected_keys_.clear();
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}
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}
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}
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void KeyframeViewBase::ScaleChangedEvent(double scale)
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{
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QMap<NodeKeyframe*, KeyframeViewItem*>::const_iterator iterator;
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for (iterator=item_map_.begin();iterator!=item_map_.end();iterator++) {
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iterator.value()->SetScale(scale);
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}
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}
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void KeyframeViewBase::VerticalScaleChangedEvent(double)
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{
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}
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const QMap<NodeKeyframe *, KeyframeViewItem *> &KeyframeViewBase::item_map() const
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{
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return item_map_;
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}
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void KeyframeViewBase::KeyframeAboutToBeRemoved(NodeKeyframe *)
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{
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}
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void KeyframeViewBase::SetYAxisEnabled(bool e)
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{
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y_axis_enabled_ = e;
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}
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rational KeyframeViewBase::CalculateNewTimeFromScreen(const rational &old_time, double cursor_diff)
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{
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return rational::fromDouble(old_time.toDouble() + cursor_diff);
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}
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QPointF KeyframeViewBase::GenerateBezierControlPosition(const NodeKeyframe::BezierType mode, const QPointF &start_point, const QPointF &scaled_cursor_diff)
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{
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QPointF new_bezier_pos = start_point;
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new_bezier_pos += scaled_cursor_diff;
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// LIMIT bezier handles from overlapping each other
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if (mode == NodeKeyframe::kInHandle) {
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if (new_bezier_pos.x() > 0) {
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new_bezier_pos.setX(0);
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}
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} else {
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if (new_bezier_pos.x() < 0) {
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new_bezier_pos.setX(0);
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}
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}
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return new_bezier_pos;
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}
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void KeyframeViewBase::ProcessBezierDrag(QPointF mouse_diff_scaled, bool include_opposing, bool undoable)
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{
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// Flip the mouse Y because bezier control points are drawn bottom to top, not top to bottom
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mouse_diff_scaled.setY(-mouse_diff_scaled.y());
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QPointF new_bezier_pos = GenerateBezierControlPosition(dragging_bezier_point_->mode(),
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dragging_bezier_point_start_,
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mouse_diff_scaled);
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// If the user is NOT holding control, we set the other handle to the exact negative of this handle
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QPointF new_opposing_pos;
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NodeKeyframe::BezierType opposing_type = NodeKeyframe::get_opposing_bezier_type(dragging_bezier_point_->mode());
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if (include_opposing) {
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new_opposing_pos = GenerateBezierControlPosition(opposing_type,
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dragging_bezier_point_opposing_start_,
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-mouse_diff_scaled);
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} else {
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new_opposing_pos = dragging_bezier_point_opposing_start_;
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}
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NodeInput* input_parent = dragging_bezier_point_->key()->parent();
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if (undoable) {
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QUndoCommand* command = new QUndoCommand();
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// Similar to the code in MouseRelease, we manipulated the signalling earlier and need to set the keys back to their
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// original position to allow the input to signal correctly when the undo command is pushed.
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input_parent->blockSignals(true);
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dragging_bezier_point_->key()->set_bezier_control(dragging_bezier_point_->mode(),
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dragging_bezier_point_start_);
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new KeyframeSetBezierControlPoint(dragging_bezier_point_->key(),
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dragging_bezier_point_->mode(),
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new_bezier_pos,
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dragging_bezier_point_start_,
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command);
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if (include_opposing) {
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dragging_bezier_point_->key()->set_bezier_control(opposing_type,
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dragging_bezier_point_opposing_start_);
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new KeyframeSetBezierControlPoint(dragging_bezier_point_->key(),
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opposing_type,
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new_opposing_pos,
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dragging_bezier_point_opposing_start_,
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command);
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}
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input_parent->blockSignals(false);
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Core::instance()->undo_stack()->push(command);
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} else {
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input_parent->blockSignals(true);
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dragging_bezier_point_->key()->set_bezier_control(dragging_bezier_point_->mode(),
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new_bezier_pos);
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dragging_bezier_point_->key()->set_bezier_control(opposing_type,
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new_opposing_pos);
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input_parent->blockSignals(false);
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input_parent->parentNode()->InvalidateVisible(input_parent);
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}
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}
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QPointF KeyframeViewBase::GetScaledCursorPos(const QPoint &cursor_pos)
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{
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return QPointF(static_cast<double>(cursor_pos.x()) / scale_,
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static_cast<double>(cursor_pos.y()) / y_scale_);
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}
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void KeyframeViewBase::ShowContextMenu()
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{
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Menu m;
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MenuShared::instance()->AddItemsForEditMenu(&m);
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QAction* linear_key_action = nullptr;
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QAction* bezier_key_action = nullptr;
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QAction* hold_key_action = nullptr;
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QList<QGraphicsItem*> items = scene()->selectedItems();
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if (!items.isEmpty()) {
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bool all_keys_are_same_type = true;
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NodeKeyframe::Type type = static_cast<KeyframeViewItem*>(items.first())->key()->type();
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for (int i=1;i<items.size();i++) {
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KeyframeViewItem* key_item = static_cast<KeyframeViewItem*>(items.at(i));
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KeyframeViewItem* prev_item = static_cast<KeyframeViewItem*>(items.at(i-1));
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if (key_item->key()->type() != prev_item->key()->type()) {
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all_keys_are_same_type = false;
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break;
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}
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}
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m.addSeparator();
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linear_key_action = m.addAction(tr("Linear"));
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bezier_key_action = m.addAction(tr("Bezier"));
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hold_key_action = m.addAction(tr("Hold"));
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if (all_keys_are_same_type) {
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switch (type) {
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case NodeKeyframe::kLinear:
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linear_key_action->setChecked(true);
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break;
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case NodeKeyframe::kBezier:
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bezier_key_action->setChecked(true);
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break;
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case NodeKeyframe::kHold:
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hold_key_action->setChecked(true);
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break;
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}
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}
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m.addSeparator();
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QAction* properties_action = m.addAction(tr("P&roperties"));
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connect(properties_action, &QAction::triggered, this, &KeyframeViewBase::ShowKeyframePropertiesDialog);
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}
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QAction* selected = m.exec(QCursor::pos());
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// Process keyframe type changes
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if (!items.isEmpty()) {
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if (selected == linear_key_action
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|| selected == bezier_key_action
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|| selected == hold_key_action) {
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NodeKeyframe::Type new_type;
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if (selected == hold_key_action) {
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new_type = NodeKeyframe::kHold;
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} else if (selected == bezier_key_action) {
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new_type = NodeKeyframe::kBezier;
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} else {
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new_type = NodeKeyframe::kLinear;
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}
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QUndoCommand* command = new QUndoCommand();
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foreach (QGraphicsItem* item, items) {
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new KeyframeSetTypeCommand(static_cast<KeyframeViewItem*>(item)->key(),
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new_type,
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command);
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}
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Core::instance()->undo_stack()->pushIfHasChildren(command);
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}
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}
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}
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void KeyframeViewBase::ShowKeyframePropertiesDialog()
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{
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QList<QGraphicsItem*> items = scene()->selectedItems();
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QList<NodeKeyframePtr> keys;
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foreach (QGraphicsItem* item, items) {
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keys.append(static_cast<KeyframeViewItem*>(item)->key());
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}
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if (!keys.isEmpty()) {
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KeyframePropertiesDialog kd(keys, timebase(), this);
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kd.exec();
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}
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}
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