add lazarus source

Source/FluidSynthModel.h

@@ -0,0 +1,76 @@
+//
+// Created by Alex Birch on 10/09/2017.
+//
+
+#pragma once
+
+#include "../JuceLibraryCode/JuceHeader.h"
+#include <fluidsynth.h>
+#include <memory>
+#include "PresetsToBanks.h"
+
+
+// https://stackoverflow.com/a/13446565/5257399
+using std::shared_ptr;
+
+class FluidSynthModel {
+public:
+    FluidSynthModel();
+    ~FluidSynthModel();
+
+    fluid_synth_t* getSynth();
+    void initialise();
+
+    BanksToPresets getBanks();
+
+    void changePreset(int bank, int preset);
+    int getChannel();
+
+    void onFileNameChanged(const string &absPath);
+
+    //==============================================================================
+    /**
+        Used to receive callbacks when a button is clicked.
+
+        @see Button::addListener, Button::removeListener
+    */
+    class Listener
+    {
+    public:
+        /** Destructor. */
+        virtual ~Listener();
+
+        /** Called when the button is clicked. */
+        virtual void fontChanged (FluidSynthModel*);
+    };
+
+    /** Registers a listener to receive events when this button's state changes.
+        If the listener is already registered, this will not register it again.
+        @see removeListener
+    */
+    void addListener (Listener* newListener);
+
+    /** Removes a previously-registered button listener
+        @see addListener
+    */
+    void removeListener (Listener* listener);
+
+private:
+    fluid_synth_t* synth;
+    fluid_settings_t* settings;
+//    fluid_audio_driver_t* driver;
+
+    const fluid_preset_t getFirstPreset();
+    void selectFirstPreset();
+
+    void unloadAndLoadFont(const string &absPath);
+    void loadFont(const string &absPath);
+
+    bool initialised;
+    unsigned int sfont_id;
+    unsigned int channel;
+
+    ListenerList<Listener> eventListeners;
+
+    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (FluidSynthModel)
+};