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GraphEditorPanel.cpp
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GraphEditorPanel.cpp
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/*
==============================================================================
This file is part of the JUCE library.
Copyright (c) 2022 - Raw Material Software Limited
JUCE is an open source library subject to commercial or open-source
licensing.
By using JUCE, you agree to the terms of both the JUCE 7 End-User License
Agreement and JUCE Privacy Policy.
End User License Agreement: www.juce.com/juce-7-licence
Privacy Policy: www.juce.com/juce-privacy-policy
Or: You may also use this code under the terms of the GPL v3 (see
www.gnu.org/licenses).
JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
DISCLAIMED.
==============================================================================
*/
#include <JuceHeader.h>
#include "GraphEditorPanel.h"
#include "../Plugins/InternalPlugins.h"
#include "MainHostWindow.h"
//==============================================================================
#if JUCE_IOS
class AUScanner
{
public:
explicit AUScanner (KnownPluginList& list)
: knownPluginList (list)
{
knownPluginList.clearBlacklistedFiles();
paths = formatToScan.getDefaultLocationsToSearch();
startScan();
}
private:
KnownPluginList& knownPluginList;
AudioUnitPluginFormat formatToScan;
std::unique_ptr<PluginDirectoryScanner> scanner;
FileSearchPath paths;
static constexpr auto numJobs = 5;
ThreadPool pool { numJobs };
void startScan()
{
auto deadMansPedalFile = getAppProperties().getUserSettings()
->getFile().getSiblingFile ("RecentlyCrashedPluginsList");
scanner.reset (new PluginDirectoryScanner (knownPluginList, formatToScan, paths,
true, deadMansPedalFile, true));
for (int i = numJobs; --i >= 0;)
pool.addJob (new ScanJob (*this), true);
}
bool doNextScan()
{
String pluginBeingScanned;
return scanner->scanNextFile (true, pluginBeingScanned);
}
struct ScanJob : public ThreadPoolJob
{
ScanJob (AUScanner& s) : ThreadPoolJob ("pluginscan"), scanner (s) {}
JobStatus runJob()
{
while (scanner.doNextScan() && ! shouldExit())
{}
return jobHasFinished;
}
AUScanner& scanner;
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ScanJob)
};
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (AUScanner)
};
#endif
//==============================================================================
struct GraphEditorPanel::PinComponent : public Component,
public SettableTooltipClient
{
PinComponent (GraphEditorPanel& p, AudioProcessorGraph::NodeAndChannel pinToUse, bool isIn)
: panel (p), graph (p.graph), pin (pinToUse), isInput (isIn)
{
if (auto node = graph.graph.getNodeForId (pin.nodeID))
{
String tip;
if (pin.isMIDI())
{
tip = isInput ? "MIDI Input"
: "MIDI Output";
}
else
{
auto& processor = *node->getProcessor();
auto channel = processor.getOffsetInBusBufferForAbsoluteChannelIndex (isInput, pin.channelIndex, busIdx);
if (auto* bus = processor.getBus (isInput, busIdx))
tip = bus->getName() + ": " + AudioChannelSet::getAbbreviatedChannelTypeName (bus->getCurrentLayout().getTypeOfChannel (channel));
else
tip = (isInput ? "Main Input: "
: "Main Output: ") + String (pin.channelIndex + 1);
}
setTooltip (tip);
}
setSize (16, 16);
}
void paint (Graphics& g) override
{
auto w = (float) getWidth();
auto h = (float) getHeight();
Path p;
p.addEllipse (w * 0.25f, h * 0.25f, w * 0.5f, h * 0.5f);
p.addRectangle (w * 0.4f, isInput ? (0.5f * h) : 0.0f, w * 0.2f, h * 0.5f);
auto colour = (pin.isMIDI() ? Colours::red : Colours::green);
g.setColour (colour.withRotatedHue ((float) busIdx / 5.0f));
g.fillPath (p);
}
void mouseDown (const MouseEvent& e) override
{
AudioProcessorGraph::NodeAndChannel dummy { {}, 0 };
panel.beginConnectorDrag (isInput ? dummy : pin,
isInput ? pin : dummy,
e);
}
void mouseDrag (const MouseEvent& e) override
{
panel.dragConnector (e);
}
void mouseUp (const MouseEvent& e) override
{
panel.endDraggingConnector (e);
}
GraphEditorPanel& panel;
PluginGraph& graph;
AudioProcessorGraph::NodeAndChannel pin;
const bool isInput;
int busIdx = 0;
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (PinComponent)
};
//==============================================================================
struct GraphEditorPanel::PluginComponent : public Component,
public Timer,
private AudioProcessorParameter::Listener,
private AsyncUpdater
{
PluginComponent (GraphEditorPanel& p, AudioProcessorGraph::NodeID id) : panel (p), graph (p.graph), pluginID (id)
{
shadow.setShadowProperties (DropShadow (Colours::black.withAlpha (0.5f), 3, { 0, 1 }));
setComponentEffect (&shadow);
if (auto f = graph.graph.getNodeForId (pluginID))
{
if (auto* processor = f->getProcessor())
{
if (auto* bypassParam = processor->getBypassParameter())
bypassParam->addListener (this);
}
}
setSize (150, 60);
}
PluginComponent (const PluginComponent&) = delete;
PluginComponent& operator= (const PluginComponent&) = delete;
~PluginComponent() override
{
if (auto f = graph.graph.getNodeForId (pluginID))
{
if (auto* processor = f->getProcessor())
{
if (auto* bypassParam = processor->getBypassParameter())
bypassParam->removeListener (this);
}
}
}
void mouseDown (const MouseEvent& e) override
{
originalPos = localPointToGlobal (Point<int>());
toFront (true);
if (isOnTouchDevice())
{
startTimer (750);
}
else
{
if (e.mods.isPopupMenu())
showPopupMenu();
}
}
void mouseDrag (const MouseEvent& e) override
{
if (isOnTouchDevice() && e.getDistanceFromDragStart() > 5)
stopTimer();
if (! e.mods.isPopupMenu())
{
auto pos = originalPos + e.getOffsetFromDragStart();
if (getParentComponent() != nullptr)
pos = getParentComponent()->getLocalPoint (nullptr, pos);
pos += getLocalBounds().getCentre();
graph.setNodePosition (pluginID,
{ pos.x / (double) getParentWidth(),
pos.y / (double) getParentHeight() });
panel.updateComponents();
}
}
void mouseUp (const MouseEvent& e) override
{
if (isOnTouchDevice())
{
stopTimer();
callAfterDelay (250, []() { PopupMenu::dismissAllActiveMenus(); });
}
if (e.mouseWasDraggedSinceMouseDown())
{
graph.setChangedFlag (true);
}
else if (e.getNumberOfClicks() == 2)
{
if (auto f = graph.graph.getNodeForId (pluginID))
if (auto* w = graph.getOrCreateWindowFor (f, PluginWindow::Type::normal))
w->toFront (true);
}
}
bool hitTest (int x, int y) override
{
for (auto* child : getChildren())
if (child->getBounds().contains (x, y))
return true;
return x >= 3 && x < getWidth() - 6 && y >= pinSize && y < getHeight() - pinSize;
}
void paint (Graphics& g) override
{
auto boxArea = getLocalBounds().reduced (4, pinSize);
bool isBypassed = false;
if (auto* f = graph.graph.getNodeForId (pluginID))
isBypassed = f->isBypassed();
auto boxColour = findColour (TextEditor::backgroundColourId);
if (isBypassed)
boxColour = boxColour.brighter();
g.setColour (boxColour);
g.fillRect (boxArea.toFloat());
g.setColour (findColour (TextEditor::textColourId));
g.setFont (font);
g.drawFittedText (getName(), boxArea, Justification::centred, 2);
}
void resized() override
{
if (auto f = graph.graph.getNodeForId (pluginID))
{
if (auto* processor = f->getProcessor())
{
for (auto* pin : pins)
{
const bool isInput = pin->isInput;
auto channelIndex = pin->pin.channelIndex;
int busIdx = 0;
processor->getOffsetInBusBufferForAbsoluteChannelIndex (isInput, channelIndex, busIdx);
const int total = isInput ? numIns : numOuts;
const int index = pin->pin.isMIDI() ? (total - 1) : channelIndex;
auto totalSpaces = static_cast<float> (total) + (static_cast<float> (jmax (0, processor->getBusCount (isInput) - 1)) * 0.5f);
auto indexPos = static_cast<float> (index) + (static_cast<float> (busIdx) * 0.5f);
pin->setBounds (proportionOfWidth ((1.0f + indexPos) / (totalSpaces + 1.0f)) - pinSize / 2,
pin->isInput ? 0 : (getHeight() - pinSize),
pinSize, pinSize);
}
}
}
}
Point<float> getPinPos (int index, bool isInput) const
{
for (auto* pin : pins)
if (pin->pin.channelIndex == index && isInput == pin->isInput)
return getPosition().toFloat() + pin->getBounds().getCentre().toFloat();
return {};
}
void update()
{
const AudioProcessorGraph::Node::Ptr f (graph.graph.getNodeForId (pluginID));
jassert (f != nullptr);
auto& processor = *f->getProcessor();
numIns = processor.getTotalNumInputChannels();
if (processor.acceptsMidi())
++numIns;
numOuts = processor.getTotalNumOutputChannels();
if (processor.producesMidi())
++numOuts;
int w = 100;
int h = 60;
w = jmax (w, (jmax (numIns, numOuts) + 1) * 20);
const int textWidth = font.getStringWidth (processor.getName());
w = jmax (w, 16 + jmin (textWidth, 300));
if (textWidth > 300)
h = 100;
setSize (w, h);
setName (processor.getName() + formatSuffix);
{
auto p = graph.getNodePosition (pluginID);
setCentreRelative ((float) p.x, (float) p.y);
}
if (numIns != numInputs || numOuts != numOutputs)
{
numInputs = numIns;
numOutputs = numOuts;
pins.clear();
for (int i = 0; i < processor.getTotalNumInputChannels(); ++i)
addAndMakeVisible (pins.add (new PinComponent (panel, { pluginID, i }, true)));
if (processor.acceptsMidi())
addAndMakeVisible (pins.add (new PinComponent (panel, { pluginID, AudioProcessorGraph::midiChannelIndex }, true)));
for (int i = 0; i < processor.getTotalNumOutputChannels(); ++i)
addAndMakeVisible (pins.add (new PinComponent (panel, { pluginID, i }, false)));
if (processor.producesMidi())
addAndMakeVisible (pins.add (new PinComponent (panel, { pluginID, AudioProcessorGraph::midiChannelIndex }, false)));
resized();
}
}
AudioProcessor* getProcessor() const
{
if (auto node = graph.graph.getNodeForId (pluginID))
return node->getProcessor();
return {};
}
bool isNodeUsingARA() const
{
if (auto node = graph.graph.getNodeForId (pluginID))
return node->properties["useARA"];
return false;
}
void showPopupMenu()
{
menu.reset (new PopupMenu);
menu->addItem ("Delete this filter", [this] { graph.graph.removeNode (pluginID); });
menu->addItem ("Disconnect all pins", [this] { graph.graph.disconnectNode (pluginID); });
menu->addItem ("Toggle Bypass", [this]
{
if (auto* node = graph.graph.getNodeForId (pluginID))
node->setBypassed (! node->isBypassed());
repaint();
});
menu->addSeparator();
if (getProcessor()->hasEditor())
menu->addItem ("Show plugin GUI", [this] { showWindow (PluginWindow::Type::normal); });
menu->addItem ("Show all programs", [this] { showWindow (PluginWindow::Type::programs); });
menu->addItem ("Show all parameters", [this] { showWindow (PluginWindow::Type::generic); });
menu->addItem ("Show debug log", [this] { showWindow (PluginWindow::Type::debug); });
#if JUCE_PLUGINHOST_ARA && (JUCE_MAC || JUCE_WINDOWS || JUCE_LINUX)
if (auto* instance = dynamic_cast<AudioPluginInstance*> (getProcessor()))
if (instance->getPluginDescription().hasARAExtension && isNodeUsingARA())
menu->addItem ("Show ARA host controls", [this] { showWindow (PluginWindow::Type::araHost); });
#endif
if (autoScaleOptionAvailable)
addPluginAutoScaleOptionsSubMenu (dynamic_cast<AudioPluginInstance*> (getProcessor()), *menu);
menu->addSeparator();
menu->addItem ("Configure Audio I/O", [this] { showWindow (PluginWindow::Type::audioIO); });
menu->addItem ("Test state save/load", [this] { testStateSaveLoad(); });
#if ! JUCE_IOS && ! JUCE_ANDROID
menu->addSeparator();
menu->addItem ("Save plugin state", [this] { savePluginState(); });
menu->addItem ("Load plugin state", [this] { loadPluginState(); });
#endif
menu->showMenuAsync ({});
}
void testStateSaveLoad()
{
if (auto* processor = getProcessor())
{
MemoryBlock state;
processor->getStateInformation (state);
processor->setStateInformation (state.getData(), (int) state.getSize());
}
}
void showWindow (PluginWindow::Type type)
{
if (auto node = graph.graph.getNodeForId (pluginID))
if (auto* w = graph.getOrCreateWindowFor (node, type))
w->toFront (true);
}
void timerCallback() override
{
// this should only be called on touch devices
jassert (isOnTouchDevice());
stopTimer();
showPopupMenu();
}
void parameterValueChanged (int, float) override
{
// Parameter changes might come from the audio thread or elsewhere, but
// we can only call repaint from the message thread.
triggerAsyncUpdate();
}
void parameterGestureChanged (int, bool) override {}
void handleAsyncUpdate() override { repaint(); }
void savePluginState()
{
fileChooser = std::make_unique<FileChooser> ("Save plugin state");
const auto onChosen = [ref = SafePointer<PluginComponent> (this)] (const FileChooser& chooser)
{
if (ref == nullptr)
return;
const auto result = chooser.getResult();
if (result == File())
return;
if (auto* node = ref->graph.graph.getNodeForId (ref->pluginID))
{
MemoryBlock block;
node->getProcessor()->getStateInformation (block);
result.replaceWithData (block.getData(), block.getSize());
}
};
fileChooser->launchAsync (FileBrowserComponent::saveMode | FileBrowserComponent::warnAboutOverwriting, onChosen);
}
void loadPluginState()
{
fileChooser = std::make_unique<FileChooser> ("Load plugin state");
const auto onChosen = [ref = SafePointer<PluginComponent> (this)] (const FileChooser& chooser)
{
if (ref == nullptr)
return;
const auto result = chooser.getResult();
if (result == File())
return;
if (auto* node = ref->graph.graph.getNodeForId (ref->pluginID))
{
if (auto stream = result.createInputStream())
{
MemoryBlock block;
stream->readIntoMemoryBlock (block);
node->getProcessor()->setStateInformation (block.getData(), (int) block.getSize());
}
}
};
fileChooser->launchAsync (FileBrowserComponent::openMode | FileBrowserComponent::canSelectFiles, onChosen);
}
GraphEditorPanel& panel;
PluginGraph& graph;
const AudioProcessorGraph::NodeID pluginID;
OwnedArray<PinComponent> pins;
int numInputs = 0, numOutputs = 0;
int pinSize = 16;
Point<int> originalPos;
Font font { 13.0f, Font::bold };
int numIns = 0, numOuts = 0;
DropShadowEffect shadow;
std::unique_ptr<PopupMenu> menu;
std::unique_ptr<FileChooser> fileChooser;
const String formatSuffix = getFormatSuffix (getProcessor());
};
//==============================================================================
struct GraphEditorPanel::ConnectorComponent : public Component,
public SettableTooltipClient
{
explicit ConnectorComponent (GraphEditorPanel& p)
: panel (p), graph (p.graph)
{
setAlwaysOnTop (true);
}
void setInput (AudioProcessorGraph::NodeAndChannel newSource)
{
if (connection.source != newSource)
{
connection.source = newSource;
update();
}
}
void setOutput (AudioProcessorGraph::NodeAndChannel newDest)
{
if (connection.destination != newDest)
{
connection.destination = newDest;
update();
}
}
void dragStart (Point<float> pos)
{
lastInputPos = pos;
resizeToFit();
}
void dragEnd (Point<float> pos)
{
lastOutputPos = pos;
resizeToFit();
}
void update()
{
Point<float> p1, p2;
getPoints (p1, p2);
if (lastInputPos != p1 || lastOutputPos != p2)
resizeToFit();
}
void resizeToFit()
{
Point<float> p1, p2;
getPoints (p1, p2);
auto newBounds = Rectangle<float> (p1, p2).expanded (4.0f).getSmallestIntegerContainer();
if (newBounds != getBounds())
setBounds (newBounds);
else
resized();
repaint();
}
void getPoints (Point<float>& p1, Point<float>& p2) const
{
p1 = lastInputPos;
p2 = lastOutputPos;
if (auto* src = panel.getComponentForPlugin (connection.source.nodeID))
p1 = src->getPinPos (connection.source.channelIndex, false);
if (auto* dest = panel.getComponentForPlugin (connection.destination.nodeID))
p2 = dest->getPinPos (connection.destination.channelIndex, true);
}
void paint (Graphics& g) override
{
if (connection.source.isMIDI() || connection.destination.isMIDI())
g.setColour (Colours::red);
else
g.setColour (Colours::green);
g.fillPath (linePath);
}
bool hitTest (int x, int y) override
{
auto pos = Point<int> (x, y).toFloat();
if (hitPath.contains (pos))
{
double distanceFromStart, distanceFromEnd;
getDistancesFromEnds (pos, distanceFromStart, distanceFromEnd);
// avoid clicking the connector when over a pin
return distanceFromStart > 7.0 && distanceFromEnd > 7.0;
}
return false;
}
void mouseDown (const MouseEvent&) override
{
dragging = false;
}
void mouseDrag (const MouseEvent& e) override
{
if (dragging)
{
panel.dragConnector (e);
}
else if (e.mouseWasDraggedSinceMouseDown())
{
dragging = true;
graph.graph.removeConnection (connection);
double distanceFromStart, distanceFromEnd;
getDistancesFromEnds (getPosition().toFloat() + e.position, distanceFromStart, distanceFromEnd);
const bool isNearerSource = (distanceFromStart < distanceFromEnd);
AudioProcessorGraph::NodeAndChannel dummy { {}, 0 };
panel.beginConnectorDrag (isNearerSource ? dummy : connection.source,
isNearerSource ? connection.destination : dummy,
e);
}
}
void mouseUp (const MouseEvent& e) override
{
if (dragging)
panel.endDraggingConnector (e);
}
void resized() override
{
Point<float> p1, p2;
getPoints (p1, p2);
lastInputPos = p1;
lastOutputPos = p2;
p1 -= getPosition().toFloat();
p2 -= getPosition().toFloat();
linePath.clear();
linePath.startNewSubPath (p1);
linePath.cubicTo (p1.x, p1.y + (p2.y - p1.y) * 0.33f,
p2.x, p1.y + (p2.y - p1.y) * 0.66f,
p2.x, p2.y);
PathStrokeType wideStroke (8.0f);
wideStroke.createStrokedPath (hitPath, linePath);
PathStrokeType stroke (2.5f);
stroke.createStrokedPath (linePath, linePath);
auto arrowW = 5.0f;
auto arrowL = 4.0f;
Path arrow;
arrow.addTriangle (-arrowL, arrowW,
-arrowL, -arrowW,
arrowL, 0.0f);
arrow.applyTransform (AffineTransform()
.rotated (MathConstants<float>::halfPi - (float) atan2 (p2.x - p1.x, p2.y - p1.y))
.translated ((p1 + p2) * 0.5f));
linePath.addPath (arrow);
linePath.setUsingNonZeroWinding (true);
}
void getDistancesFromEnds (Point<float> p, double& distanceFromStart, double& distanceFromEnd) const
{
Point<float> p1, p2;
getPoints (p1, p2);
distanceFromStart = p1.getDistanceFrom (p);
distanceFromEnd = p2.getDistanceFrom (p);
}
GraphEditorPanel& panel;
PluginGraph& graph;
AudioProcessorGraph::Connection connection { { {}, 0 }, { {}, 0 } };
Point<float> lastInputPos, lastOutputPos;
Path linePath, hitPath;
bool dragging = false;
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ConnectorComponent)
};
//==============================================================================
GraphEditorPanel::GraphEditorPanel (PluginGraph& g) : graph (g)
{
graph.addChangeListener (this);
setOpaque (true);
}
GraphEditorPanel::~GraphEditorPanel()
{
graph.removeChangeListener (this);
draggingConnector = nullptr;
nodes.clear();
connectors.clear();
}
void GraphEditorPanel::paint (Graphics& g)
{
g.fillAll (getLookAndFeel().findColour (ResizableWindow::backgroundColourId));
}
void GraphEditorPanel::mouseDown (const MouseEvent& e)
{
if (isOnTouchDevice())
{
originalTouchPos = e.position.toInt();
startTimer (750);
}
if (e.mods.isPopupMenu())
showPopupMenu (e.position.toInt());
}
void GraphEditorPanel::mouseUp (const MouseEvent&)
{
if (isOnTouchDevice())
{
stopTimer();
callAfterDelay (250, []() { PopupMenu::dismissAllActiveMenus(); });
}
}
void GraphEditorPanel::mouseDrag (const MouseEvent& e)
{
if (isOnTouchDevice() && e.getDistanceFromDragStart() > 5)
stopTimer();
}
void GraphEditorPanel::createNewPlugin (const PluginDescriptionAndPreference& desc, Point<int> position)
{
graph.addPlugin (desc, position.toDouble() / Point<double> ((double) getWidth(), (double) getHeight()));
}
GraphEditorPanel::PluginComponent* GraphEditorPanel::getComponentForPlugin (AudioProcessorGraph::NodeID nodeID) const
{
for (auto* fc : nodes)
if (fc->pluginID == nodeID)
return fc;
return nullptr;
}
GraphEditorPanel::ConnectorComponent* GraphEditorPanel::getComponentForConnection (const AudioProcessorGraph::Connection& conn) const
{
for (auto* cc : connectors)
if (cc->connection == conn)
return cc;
return nullptr;
}
GraphEditorPanel::PinComponent* GraphEditorPanel::findPinAt (Point<float> pos) const
{
for (auto* fc : nodes)
{
// NB: A Visual Studio optimiser error means we have to put this Component* in a local
// variable before trying to cast it, or it gets mysteriously optimised away..
auto* comp = fc->getComponentAt (pos.toInt() - fc->getPosition());
if (auto* pin = dynamic_cast<PinComponent*> (comp))
return pin;
}
return nullptr;
}
void GraphEditorPanel::resized()
{
updateComponents();
}
void GraphEditorPanel::changeListenerCallback (ChangeBroadcaster*)
{
updateComponents();
}
void GraphEditorPanel::updateComponents()
{
for (int i = nodes.size(); --i >= 0;)
if (graph.graph.getNodeForId (nodes.getUnchecked(i)->pluginID) == nullptr)
nodes.remove (i);
for (int i = connectors.size(); --i >= 0;)
if (! graph.graph.isConnected (connectors.getUnchecked(i)->connection))
connectors.remove (i);
for (auto* fc : nodes)
fc->update();
for (auto* cc : connectors)
cc->update();
for (auto* f : graph.graph.getNodes())
{
if (getComponentForPlugin (f->nodeID) == nullptr)
{
auto* comp = nodes.add (new PluginComponent (*this, f->nodeID));
addAndMakeVisible (comp);
comp->update();
}
}
for (auto& c : graph.graph.getConnections())
{
if (getComponentForConnection (c) == nullptr)
{
auto* comp = connectors.add (new ConnectorComponent (*this));
addAndMakeVisible (comp);
comp->setInput (c.source);
comp->setOutput (c.destination);
}
}
}
void GraphEditorPanel::showPopupMenu (Point<int> mousePos)
{
menu.reset (new PopupMenu);
if (auto* mainWindow = findParentComponentOfClass<MainHostWindow>())
{
mainWindow->addPluginsToMenu (*menu);
menu->showMenuAsync ({},
ModalCallbackFunction::create ([this, mousePos] (int r)
{
if (r > 0)
if (auto* mainWin = findParentComponentOfClass<MainHostWindow>())
createNewPlugin (mainWin->getChosenType (r), mousePos);
}));
}
}
void GraphEditorPanel::beginConnectorDrag (AudioProcessorGraph::NodeAndChannel source,
AudioProcessorGraph::NodeAndChannel dest,
const MouseEvent& e)
{
auto* c = dynamic_cast<ConnectorComponent*> (e.originalComponent);
connectors.removeObject (c, false);
draggingConnector.reset (c);
if (draggingConnector == nullptr)
draggingConnector.reset (new ConnectorComponent (*this));
draggingConnector->setInput (source);
draggingConnector->setOutput (dest);
addAndMakeVisible (draggingConnector.get());
draggingConnector->toFront (false);
dragConnector (e);
}
void GraphEditorPanel::dragConnector (const MouseEvent& e)
{
auto e2 = e.getEventRelativeTo (this);
if (draggingConnector != nullptr)
{
draggingConnector->setTooltip ({});
auto pos = e2.position;
if (auto* pin = findPinAt (pos))
{
auto connection = draggingConnector->connection;
if (connection.source.nodeID == AudioProcessorGraph::NodeID() && ! pin->isInput)
{
connection.source = pin->pin;
}
else if (connection.destination.nodeID == AudioProcessorGraph::NodeID() && pin->isInput)
{
connection.destination = pin->pin;
}
if (graph.graph.canConnect (connection))
{
pos = (pin->getParentComponent()->getPosition() + pin->getBounds().getCentre()).toFloat();
draggingConnector->setTooltip (pin->getTooltip());
}
}
if (draggingConnector->connection.source.nodeID == AudioProcessorGraph::NodeID())
draggingConnector->dragStart (pos);
else
draggingConnector->dragEnd (pos);
}
}
void GraphEditorPanel::endDraggingConnector (const MouseEvent& e)
{
if (draggingConnector == nullptr)
return;
draggingConnector->setTooltip ({});
auto e2 = e.getEventRelativeTo (this);
auto connection = draggingConnector->connection;
draggingConnector = nullptr;
if (auto* pin = findPinAt (e2.position))
{
if (connection.source.nodeID == AudioProcessorGraph::NodeID())
{
if (pin->isInput)
return;
connection.source = pin->pin;
}
else
{
if (! pin->isInput)
return;
connection.destination = pin->pin;
}
graph.graph.addConnection (connection);
}
}
void GraphEditorPanel::timerCallback()
{
// this should only be called on touch devices
jassert (isOnTouchDevice());
stopTimer();
showPopupMenu (originalTouchPos);