From 7545b20f749887be8d831ff57ce4c3bba0c4550d Mon Sep 17 00:00:00 2001
From: George Reales <contactus@discodsp.com>
Date: Tue, 4 Oct 2022 19:30:58 +0200
Subject: [PATCH] Copy Paste functionality

---
 Source/PluginEditor.cpp    | 40 ++++++++++++++++++++++++-
 Source/PluginEditor.h      |  2 ++
 Source/PluginProcessor.cpp | 60 ++++++++++++++++++++++++++++++++++----
 Source/PluginProcessor.h   |  3 ++
 4 files changed, 99 insertions(+), 6 deletions(-)

diff --git a/Source/PluginEditor.cpp b/Source/PluginEditor.cpp
index 9db7c3d..62ba7c2 100755
--- a/Source/PluginEditor.cpp
+++ b/Source/PluginEditor.cpp
@@ -863,6 +863,8 @@ void ObxdAudioProcessorEditor::rebuildComponents (ObxdAudioProcessor& ownerFilte
 
 void ObxdAudioProcessorEditor::createMenu ()
 {
+	bool enablePasteOption = macPasteboard::containsPresetData();	// Check if the clipboard contains data for a Preset
+
     popupMenus.clear();
     PopupMenu* menu = new PopupMenu();
     //menu->setLookAndFeel(new CustomLookAndFeel(&this->processor));
@@ -926,7 +928,19 @@ void ObxdAudioProcessorEditor::createMenu ()
                      true,
                      false);
         
-        /*
+		fileMenu.addSeparator();
+		
+		fileMenu.addItem(static_cast<int>(MenuAction::CopyPreset),
+					 "Copy Preset...",
+					 true,
+					 false);
+		
+		fileMenu.addItem(static_cast<int>(MenuAction::PastePreset),
+					 "Paste Preset...",
+					 enablePasteOption,
+					 false);
+
+		/*
         fileMenu.addItem(static_cast<int>(MenuAction::DeleteBank),
                      "Delete Bank...",
                      true,
@@ -1324,6 +1338,30 @@ void ObxdAudioProcessorEditor::MenuActionCallback(int action){
         }
     };
 
+	// Copy to clipboard
+	if (action == MenuAction::CopyPreset)
+	{
+		juce::MemoryBlock serializedData;
+
+		// Serialize the Preset, produces the same data as an export but into memory instead of a file.
+		processor.serializePreset(serializedData);
+
+		// Place the data onto the clipboard
+		macPasteboard::copyPresetDataToClipboard(serializedData.getData(), serializedData.getSize());
+	}
+
+	// Paste from clipboard
+	if (action == MenuAction::PastePreset)
+	{
+		juce::MemoryBlock memoryBlock;
+
+		// Fetch Preset data from the clipboard
+		if (macPasteboard::fetchPresetDataFromClipboard(memoryBlock))
+		{
+			// Load the data
+			processor.loadFromMemoryBlock(memoryBlock);	//loadPreset(memoryBlock);
+		}
+	}
 }
 
 
diff --git a/Source/PluginEditor.h b/Source/PluginEditor.h
index 988e513..e0a94de 100644
--- a/Source/PluginEditor.h
+++ b/Source/PluginEditor.h
@@ -43,6 +43,8 @@ enum MenuAction
     DeletePreset,
     DeleteBank,
     ShowBanks,
+	CopyPreset,
+	PastePreset,
     LoadBank // LoadBank must be the last enum value
 };
 //==============================================================================
diff --git a/Source/PluginProcessor.cpp b/Source/PluginProcessor.cpp
index 39c1eef..a553601 100644
--- a/Source/PluginProcessor.cpp
+++ b/Source/PluginProcessor.cpp
@@ -508,12 +508,38 @@ void ObxdAudioProcessor::saveBank() {
 }
 
 bool ObxdAudioProcessor::loadPreset(const File& fxpFile) {
-    loadFromFXBFile(fxpFile);
+    loadFromFXPFile(fxpFile);
     currentPreset = fxpFile.getFileName();
     currentPresetFile = fxpFile;
     return true;
 }
 
+/// Serialize the current Preset, just like the saveFXPFile function,
+/// but keeps the data in memory instead of writing it to a file.
+void ObxdAudioProcessor::serializePreset(MemoryBlock& memoryBlock)
+{
+	juce::MemoryBlock m;
+	getCurrentProgramStateInformation(m);
+	{
+		memoryBlock.reset();
+		auto totalLen = sizeof (fxProgramSet) + m.getSize() - 8;
+		memoryBlock.setSize (totalLen, true);
+
+		auto set = static_cast<fxProgramSet*>(memoryBlock.getData());
+		set->chunkMagic = fxbName ("CcnK");
+		set->byteSize = 0;
+		set->fxMagic = fxbName ("FPCh");
+		set->version = fxbSwap (fxbVersionNum);
+		set->fxID = fxbName ("Obxd");
+		set->fxVersion = fxbSwap (fxbVersionNum);
+		set->numPrograms = fxbSwap (getNumPrograms());
+		programs.currentProgramPtr->name.copyToUTF8(set->name, 28);
+		set->chunkSize = fxbSwap (static_cast<int32>(m.getSize()));
+
+		m.copyTo (set->chunk, 0, m.getSize());
+	}
+}
+
 bool ObxdAudioProcessor::saveFXPFile(const File& fxpFile){
     //auto xml = std::unique_ptr<juce::XmlElement>(new juce::XmlElement(""));
     juce::MemoryBlock m, memoryBlock;
@@ -612,12 +638,40 @@ bool ObxdAudioProcessor::saveFXBFile(const File& fxbFile) {
     return true;
 }
 
+bool ObxdAudioProcessor::loadFromFXPFile(const File& fxpFile)
+{
+	MemoryBlock mb;
+	if (! fxpFile.loadFileAsData(mb))
+		return false;
+	
+	if (!loadFromMemoryBlock(mb))
+		return false;
+
+	currentPreset = fxpFile.getFileName();
+	currentPresetFile = fxpFile;
+	updateHostDisplay();
+	
+	return true;
+}
+
 bool ObxdAudioProcessor::loadFromFXBFile(const File& fxbFile)
 {
 	MemoryBlock mb;
 	if (! fxbFile.loadFileAsData(mb))
 		return false;
+	
+	if (!loadFromMemoryBlock(mb))
+		return false;
+	
+	currentBank = fxbFile.getFileName();
+	currentBankFile = fxbFile;
+	updateHostDisplay();
+	
+	return true;
+}
 
+bool ObxdAudioProcessor::loadFromMemoryBlock(MemoryBlock& mb)
+{
 	const void* const data = mb.getData();
 	const size_t dataSize = mb.getSize();
 
@@ -706,10 +760,6 @@ bool ObxdAudioProcessor::loadFromFXBFile(const File& fxbFile)
 		return false;
 	}
 
-	currentBank = fxbFile.getFileName();
-    currentBankFile = fxbFile;
-	updateHostDisplay();
-
 	return true;
 }
 
diff --git a/Source/PluginProcessor.h b/Source/PluginProcessor.h
index 127dbf8..3363d3f 100644
--- a/Source/PluginProcessor.h
+++ b/Source/PluginProcessor.h
@@ -177,11 +177,14 @@ public:
     bool deleteBank();
     bool loadPreset(const File& fxpFile);
     bool savePreset(const File& fxpFile);
+	void serializePreset(MemoryBlock& memoryBlock);		// Copy the current Preset into a MemoryBlock
     void changePresetName(const String &name);
     void newPreset(const String &name);
     void deletePreset();
     
+	bool loadFromFXPFile(const File& fxbFile);
 	bool loadFromFXBFile(const File& fxbFile);
+	bool loadFromMemoryBlock(MemoryBlock& memoryBlock);
     bool saveFXBFile(const File& fxbFile);
     bool saveFXPFile(const File& fxpFile);
     bool saveBank(const File& fxbFile);