implemented value node

Also implements changes necessary to support an input data type
that changes. Much of that foundation was built in
`nodearchchanges`, but hadn't been finalized. This commit
finalizes and provides a reference implementation/test with the
"Value" node.

Fixes #1443

app/node/factory.cpp

@@ -46,6 +46,7 @@
 #include "project/folder/folder.h"
 #include "project/footage/footage.h"
 #include "project/sequence/sequence.h"
+#include "node/input/value/valuenode.h"
 
 namespace olive {
 QList<Node*> NodeFactory::library_;
@@ -234,6 +235,8 @@ Node *NodeFactory::CreateFromFactoryIndex(const NodeFactory::InternalID &id)
     return new Folder();
   case kProjectSequence:
     return new Sequence();
+  case kValueNode:
+    return new ValueNode();
 
   case kInternalNodeCount:
     break;

app/node/factory.h

@@ -56,6 +56,7 @@ public:
     kProjectFootage,
     kProjectFolder,
     kProjectSequence,
+    kValueNode,
 
     // Count value
     kInternalNodeCount

app/node/input/CMakeLists.txt

@@ -15,6 +15,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 add_subdirectory(time)
+add_subdirectory(value)
 
 set(OLIVE_SOURCES
   ${OLIVE_SOURCES}

app/node/input/multicam/multicamnode.cpp

@@ -0,0 +1,6 @@
+#include "multicamnode.h"
+
+MultiCamNode::MultiCamNode()
+{
+
+}

app/node/input/multicam/multicamnode.h

@@ -0,0 +1,11 @@
+#ifndef MULTICAMNODE_H
+#define MULTICAMNODE_H
+
+
+class MultiCamNode
+{
+public:
+  MultiCamNode();
+};
+
+#endif // MULTICAMNODE_H

app/node/input/value/CMakeLists.txt

@@ -0,0 +1,22 @@
+# Olive - Non-Linear Video Editor
+# Copyright (C) 2020 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/>.
+
+set(OLIVE_SOURCES
+  ${OLIVE_SOURCES}
+  node/input/value/valuenode.h
+  node/input/value/valuenode.cpp
+  PARENT_SCOPE
+)

app/node/input/value/valuenode.cpp

@@ -0,0 +1,81 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2020 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 "valuenode.h"
+
+namespace olive {
+
+const QString ValueNode::kTypeInput = QStringLiteral("type_in");
+const QString ValueNode::kValueInput = QStringLiteral("value_in");
+const QVector<NodeValue::Type> ValueNode::kSupportedTypes = {
+  NodeValue::kFloat,
+  NodeValue::kInt,
+  NodeValue::kRational,
+  NodeValue::kVec2,
+  NodeValue::kVec3,
+  NodeValue::kVec4,
+  NodeValue::kColor,
+  NodeValue::kText,
+  NodeValue::kMatrix,
+  NodeValue::kFont,
+};
+
+#define super Node
+
+ValueNode::ValueNode()
+{
+  AddInput(kTypeInput, NodeValue::kCombo, 0, InputFlags(kInputFlagNotConnectable | kInputFlagNotKeyframable));
+
+  AddInput(kValueInput, kSupportedTypes.first(), QVariant(), InputFlags(kInputFlagNotConnectable));
+}
+
+void ValueNode::Retranslate()
+{
+  SetInputName(kTypeInput, QStringLiteral("Type"));
+  SetInputName(kValueInput, QStringLiteral("Value"));
+
+  QStringList type_names;
+  type_names.reserve(kSupportedTypes.size());
+  foreach (NodeValue::Type type, kSupportedTypes) {
+    type_names.append(NodeValue::GetPrettyDataTypeName(type));
+  }
+  SetComboBoxStrings(kTypeInput, type_names);
+}
+
+NodeValueTable ValueNode::Value(const QString &output, NodeValueDatabase &value) const
+{
+  Q_UNUSED(output)
+
+  // Pop combobox value off table because no other node will need it
+  value[kTypeInput].Take(NodeValue::kCombo);
+
+  return value.Merge();
+}
+
+void ValueNode::InputValueChangedEvent(const QString &input, int element)
+{
+  if (input == kTypeInput) {
+    SetInputDataType(kValueInput, kSupportedTypes.at(GetStandardValue(kTypeInput).toInt()));
+  }
+
+  super::InputValueChangedEvent(input, element);
+}
+
+}

app/node/input/value/valuenode.h

@@ -0,0 +1,78 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2020 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/>.
+
+***/
+
+#ifndef VALUENODE_H
+#define VALUENODE_H
+
+#include "node/node.h"
+
+namespace olive {
+
+class ValueNode : public Node
+{
+  Q_OBJECT
+public:
+  ValueNode();
+
+  NODE_DEFAULT_DESTRUCTOR(ValueNode)
+
+  virtual Node* copy() const override
+  {
+    return new ValueNode();
+  }
+
+  virtual QString Name() const override
+  {
+    return tr("Value");
+  }
+
+  virtual QString id() const override
+  {
+    return QStringLiteral("org.olivevideoeditor.Olive.value");
+  }
+
+  virtual QVector<CategoryID> Category() const override
+  {
+    return {kCategoryInput};
+  }
+
+  virtual QString Description() const override
+  {
+    return tr("Create a single value that can be connected to various other inputs.");
+  }
+
+  static const QString kTypeInput;
+  static const QString kValueInput;
+
+  virtual void Retranslate() override;
+
+  virtual NodeValueTable Value(const QString &output, NodeValueDatabase &value) const override;
+
+protected:
+  virtual void InputValueChangedEvent(const QString &input, int element) override;
+
+private:
+  static const QVector<NodeValue::Type> kSupportedTypes;
+
+};
+
+}
+
+#endif // VALUENODE_H

app/node/inputimmediate.cpp

@@ -27,14 +27,10 @@
 namespace olive {
 
 NodeInputImmediate::NodeInputImmediate(NodeValue::Type type, const SplitValue &default_val) :
+  default_value_(default_val),
   keyframing_(false)
 {
-  int track_size = NodeValue::get_number_of_keyframe_tracks(type);
-
-  keyframe_tracks_.resize(track_size);
-  standard_value_.resize(track_size);
-
-  set_split_standard_value(default_val);
+  set_data_type(type);
 }
 
 void NodeInputImmediate::set_standard_value_on_track(const QVariant &value, int track)
@@ -179,6 +175,16 @@ bool NodeInputImmediate::has_keyframe_at_time(const rational &time) const
   return false;
 }
 
+void NodeInputImmediate::set_data_type(NodeValue::Type type)
+{
+  int track_size = NodeValue::get_number_of_keyframe_tracks(type);
+
+  keyframe_tracks_.resize(track_size);
+  standard_value_.resize(track_size);
+
+  set_split_standard_value(default_value_);
+}
+
 NodeKeyframe *NodeInputImmediate::get_earliest_keyframe() const
 {
   NodeKeyframe* earliest = nullptr;

app/node/inputimmediate.h

@@ -151,12 +151,19 @@ public:
     return (!is_keyframing() || keyframe_tracks_.at(track).isEmpty());
   }
 
+  void set_data_type(NodeValue::Type type);
+
 private:
   /**
    * @brief Non-keyframed value
    */
   SplitValue standard_value_;
 
+  /**
+   * @brief Default value
+   */
+  SplitValue default_value_;
+
   /**
    * @brief Internal keyframe array
    *

app/node/node.cpp

@@ -505,10 +505,15 @@ NodeValue::Type Node::GetInputDataType(const QString &id) const
 
 void Node::SetInputDataType(const QString &id, const NodeValue::Type &type)
 {
-  Input* i = GetInternalInputData(id);
+  Input* input_meta = GetInternalInputData(id);
 
-  if (i) {
-    i->type = type;
+  if (input_meta) {
+    input_meta->type = type;
+
+    int array_sz = InputArraySize(id);
+    for (int i=-1; i<array_sz; i++) {
+      GetImmediate(id, i)->set_data_type(type);
+    }
 
     emit InputDataTypeChanged(id, type);
   } else {
@@ -693,7 +698,12 @@ SplitValue Node::GetSplitDefaultValue(const QString &input) const
 
 QVariant Node::GetSplitDefaultValueOnTrack(const QString &input, int track) const
 {
-  return GetSplitDefaultValue(input).at(track);
+  SplitValue val = GetSplitDefaultValue(input);
+  if (track < val.size()) {
+    return val.at(track);
+  } else {
+    return QVariant();
+  }
 }
 
 const QVector<NodeKeyframeTrack> &Node::GetKeyframeTracks(const QString &input, int element) const

app/widget/nodeparamview/nodeparamviewitem.cpp

@@ -36,6 +36,9 @@ const int NodeParamViewItemBody::kKeyControlColumn = 10;
 const int NodeParamViewItemBody::kArrayInsertColumn = kKeyControlColumn-1;
 const int NodeParamViewItemBody::kArrayRemoveColumn = kArrayInsertColumn-1;
 
+// 0 is for the array collapse button, 1 is for the main label, widgets start at 2
+const int NodeParamViewItemBody::kWidgetStartColumn = 2;
+
 #define super QDockWidget
 
 NodeParamViewItem::NodeParamViewItem(Node *node, QWidget *parent) :
@@ -261,6 +264,10 @@ void NodeParamViewItemBody::CreateWidgets(QGridLayout* layout, Node *node, const
 
   InputUI ui_objects;
 
+  // Store layout and row
+  ui_objects.layout = layout;
+  ui_objects.row = row;
+
   // Add descriptor label
   ui_objects.main_label = new QLabel();
 
@@ -303,23 +310,24 @@ void NodeParamViewItemBody::CreateWidgets(QGridLayout* layout, Node *node, const
 
   // Create a widget/input bridge for this input
   ui_objects.widget_bridge = new NodeParamViewWidgetBridge(NodeInput(node, input, element), this);
+  connect(ui_objects.widget_bridge, &NodeParamViewWidgetBridge::WidgetsRecreated, this, &NodeParamViewItemBody::ReplaceWidgets);
   connect(ui_objects.widget_bridge, &NodeParamViewWidgetBridge::ArrayWidgetDoubleClicked, this, &NodeParamViewItemBody::ToggleArrayExpanded);
 
-  // 0 is for the array collapse button, 1 is for the main label, widgets start at 2
-  const int widget_start = 2;
+  // Place widgets into layout
+  PlaceWidgetsFromBridge(layout, ui_objects.widget_bridge, row);
 
   // Add widgets for this parameter to the layout
   for (int i=0; i<ui_objects.widget_bridge->widgets().size(); i++) {
     QWidget* w = ui_objects.widget_bridge->widgets().at(i);
 
-    layout->addWidget(w, row, i+widget_start);
+    layout->addWidget(w, row, i+kWidgetStartColumn);
   }
 
   if (node->IsInputConnectable(input)) {
     // Create clickable label used when an input is connected
     ui_objects.connected_label = new NodeParamViewConnectedLabel(input_ref);
     connect(ui_objects.connected_label, &NodeParamViewConnectedLabel::RequestSelectNode, this, &NodeParamViewItemBody::RequestSelectNode);
-    layout->addWidget(ui_objects.connected_label, row, widget_start);
+    layout->addWidget(ui_objects.connected_label, row, kWidgetStartColumn);
   }
 
   // Add keyframe control to this layout if parameter is keyframable
@@ -418,6 +426,16 @@ void NodeParamViewItemBody::UpdateUIForEdgeConnection(const NodeInput& input)
   }
 }
 
+void NodeParamViewItemBody::PlaceWidgetsFromBridge(QGridLayout* layout, NodeParamViewWidgetBridge *bridge, int row)
+{
+  // Add widgets for this parameter to the layout
+  for (int i=0; i<bridge->widgets().size(); i++) {
+    QWidget* w = bridge->widgets().at(i);
+
+    layout->addWidget(w, row, i+kWidgetStartColumn);
+  }
+}
+
 void NodeParamViewItemBody::ArrayCollapseBtnPressed(bool checked)
 {
   const NodeInputPair& input = array_collapse_buttons_.key(static_cast<CollapseButton*>(sender()));
@@ -514,6 +532,12 @@ void NodeParamViewItemBody::ToggleArrayExpanded()
   }
 }
 
+void NodeParamViewItemBody::ReplaceWidgets(const NodeInput &input)
+{
+  InputUI ui = input_ui_map_.value(input);
+  PlaceWidgetsFromBridge(ui.layout, ui.widget_bridge, ui.row);
+}
+
 NodeParamViewItemBody::InputUI::InputUI() :
   main_label(nullptr),
   widget_bridge(nullptr),

app/widget/nodeparamview/nodeparamviewitem.h

@@ -97,6 +97,8 @@ private:
 
   void UpdateUIForEdgeConnection(const NodeInput &input);
 
+  void PlaceWidgetsFromBridge(QGridLayout *layout, NodeParamViewWidgetBridge* bridge, int row);
+
   struct InputUI {
     InputUI();
 
@@ -104,6 +106,8 @@ private:
     NodeParamViewWidgetBridge* widget_bridge;
     NodeParamViewConnectedLabel* connected_label;
     NodeParamViewKeyframeControl* key_control;
+    QGridLayout* layout;
+    int row;
 
     NodeParamViewArrayButton* array_insert_btn;
     NodeParamViewArrayButton* array_remove_btn;
@@ -132,6 +136,8 @@ private:
   static const int kArrayInsertColumn;
   static const int kArrayRemoveColumn;
 
+  static const int kWidgetStartColumn;
+
 private slots:
   void EdgeChanged(const NodeOutput &output, const NodeInput &input);
 
@@ -147,6 +153,8 @@ private slots:
 
   void ToggleArrayExpanded();
 
+  void ReplaceWidgets(const NodeInput& input);
+
 };
 
 class NodeParamViewItem : public QDockWidget

app/widget/nodeparamview/nodeparamviewwidgetbridge.cpp

@@ -49,6 +49,7 @@ NodeParamViewWidgetBridge::NodeParamViewWidgetBridge(const NodeInput &input, QOb
 
   connect(input_.node(), &Node::ValueChanged, this, &NodeParamViewWidgetBridge::InputValueChanged);
   connect(input_.node(), &Node::InputPropertyChanged, this, &NodeParamViewWidgetBridge::PropertyChanged);
+  connect(input_.node(), &Node::InputDataTypeChanged, this, &NodeParamViewWidgetBridge::InputDataTypeChanged);
 }
 
 void NodeParamViewWidgetBridge::SetTime(const rational &time)
@@ -756,6 +757,22 @@ void NodeParamViewWidgetBridge::PropertyChanged(const QString& input, const QStr
   }
 }
 
+void NodeParamViewWidgetBridge::InputDataTypeChanged(const QString &input, NodeValue::Type type)
+{
+  Q_UNUSED(type)
+  if (input == this->input_.input()) {
+    // Delete all widgets
+    qDeleteAll(widgets_);
+    widgets_.clear();
+
+    // Create new widgets
+    CreateWidgets();
+
+    // Signal that widgets are new
+    emit WidgetsRecreated(input_);
+  }
+}
+
 bool NodeParamViewScrollBlocker::eventFilter(QObject *watched, QEvent *event)
 {
   Q_UNUSED(watched)

app/widget/nodeparamview/nodeparamviewwidgetbridge.h

@@ -52,6 +52,8 @@ public:
 signals:
   void ArrayWidgetDoubleClicked();
 
+  void WidgetsRecreated(const NodeInput& input);
+
 private:
   void CreateWidgets();
 
@@ -85,6 +87,8 @@ private slots:
 
   void PropertyChanged(const QString &input, const QString& key, const QVariant& value);
 
+  void InputDataTypeChanged(const QString& input, NodeValue::Type type);
+
 };
 
 }