Preset menu support for Qt (patch from Timo Westkämper) (#930).

git-svn-id: http://svn.drobilla.net/lad/trunk/jalv@5227 a436a847-0d15-0410-975c-d299462d15a1

2 files changed, 142 insertions, 7 deletions

diff --git a/src/jalv_qt4.cpp b/src/jalv_qt4.cpp
index b082233..cbccdd2 100644
--- a/src/jalv_qt4.cpp
+++ b/src/jalv_qt4.cpp
@@ -1,5 +1,5 @@
 /*
-  Copyright 2007-2011 David Robillard <http://drobilla.net>
+  Copyright 2007-2013 David Robillard <http://drobilla.net>
 
   Permission to use, copy, modify, and/or distribute this software for any
   purpose with or without fee is hereby granted, provided that the above
@@ -24,6 +24,31 @@
 
 static QApplication* app = NULL;
 
+class PresetAction : public QAction {
+
+	Q_OBJECT
+
+public:
+	PresetAction(QObject* parent, Jalv* jalv, LilvNode* preset)
+		: QAction(parent)
+		, _jalv(jalv)
+		, _preset(preset)
+	{
+		connect(this, SIGNAL(triggered()),
+		        this, SLOT(presetChosen()));
+	}
+
+	Q_SLOT void presetChosen() {
+		jalv_apply_preset(_jalv, _preset);
+	}
+
+private:
+	Jalv*     _jalv;
+	LilvNode* _preset;
+};
+
+#include "jalv_qt4_meta.hpp"
+
 extern "C" {
 
 int
@@ -62,22 +87,38 @@ jalv_ui_port_event(Jalv*       jalv,
 
 class Timer : public QTimer {
 public:
-	explicit Timer(Jalv* j) : jalv(j) {}
+	explicit Timer(Jalv* jalv) : _jalv(jalv) {}
 
 	void timerEvent(QTimerEvent* e) {
-		jalv_emit_ui_events(jalv);
+		jalv_emit_ui_events(_jalv);
 	}
 
 private:
-	Jalv* jalv;
+	Jalv* _jalv;
 };
 
+static int
+add_preset_to_menu(Jalv*           jalv,
+                   const LilvNode* node,
+                   const LilvNode* title,
+                   void*           data)
+{
+	QMenu*      menu  = (QMenu*)data;
+	const char* label = lilv_node_as_string(title);
+
+	QAction* action = new PresetAction(menu, jalv, lilv_node_duplicate(node));
+	action->setText(label);
+	menu->addAction(action);
+	return 0;
+}
+
 int
 jalv_open_ui(Jalv* jalv)
 {
-	QMainWindow* win         = new QMainWindow();
-	QMenu*       file_menu   = win->menuBar()->addMenu("&File");
-	QAction*     quit_action = new QAction("&Quit", win);
+	QMainWindow* win          = new QMainWindow();
+	QMenu*       file_menu    = win->menuBar()->addMenu("&File");
+	QMenu*       presets_menu = win->menuBar()->addMenu("&Presets");
+	QAction*     quit_action  = new QAction("&Quit", win);
 
 	QObject::connect(quit_action, SIGNAL(triggered()), win, SLOT(close()));
 	quit_action->setShortcuts(QKeySequence::Quit);
@@ -85,6 +126,8 @@ jalv_open_ui(Jalv* jalv)
 	file_menu->addAction(quit_action);
 	jalv->has_ui = TRUE;
 
+	jalv_load_presets(jalv, add_preset_to_menu, presets_menu);
+
 	if (jalv->ui) {
 		jalv_ui_instantiate(jalv, jalv_native_ui_type(jalv), win);
 	}
diff --git a/src/jalv_qt4_meta.hpp b/src/jalv_qt4_meta.hpp
new file mode 100644
index 0000000..f61fe16
--- /dev/null
+++ b/src/jalv_qt4_meta.hpp
@@ -0,0 +1,92 @@
+/****************************************************************************
+** Meta object code from reading C++ file 'jalv_qt4.cpp'
+**
+** Created by: The Qt Meta Object Compiler version 63 (Qt 4.8.6)
+**
+** WARNING! All changes made in this file will be lost!
+*****************************************************************************/
+
+#if !defined(Q_MOC_OUTPUT_REVISION)
+#error "The header file 'jalv_qt4.cpp' doesn't include <QObject>."
+#elif Q_MOC_OUTPUT_REVISION != 63
+#error "This file was generated using the moc from 4.8.6. It"
+#error "cannot be used with the include files from this version of Qt."
+#error "(The moc has changed too much.)"
+#endif
+
+QT_BEGIN_MOC_NAMESPACE
+static const uint qt_meta_data_PresetAction[] = {
+
+ // content:
+       6,       // revision
+       0,       // classname
+       0,    0, // classinfo
+       1,   14, // methods
+       0,    0, // properties
+       0,    0, // enums/sets
+       0,    0, // constructors
+       0,       // flags
+       0,       // signalCount
+
+ // slots: signature, parameters, type, tag, flags
+      14,   13,   13,   13, 0x0a,
+
+       0        // eod
+};
+
+static const char qt_meta_stringdata_PresetAction[] = {
+    "PresetAction\0\0presetChosen()\0"
+};
+
+void PresetAction::qt_static_metacall(QObject *_o, QMetaObject::Call _c, int _id, void **_a)
+{
+    if (_c == QMetaObject::InvokeMetaMethod) {
+        Q_ASSERT(staticMetaObject.cast(_o));
+        PresetAction *_t = static_cast<PresetAction *>(_o);
+        switch (_id) {
+        case 0: _t->presetChosen(); break;
+        default: ;
+        }
+    }
+    Q_UNUSED(_a);
+}
+
+const QMetaObjectExtraData PresetAction::staticMetaObjectExtraData = {
+    0,  qt_static_metacall 
+};
+
+const QMetaObject PresetAction::staticMetaObject = {
+    { &QAction::staticMetaObject, qt_meta_stringdata_PresetAction,
+      qt_meta_data_PresetAction, &staticMetaObjectExtraData }
+};
+
+#ifdef Q_NO_DATA_RELOCATION
+const QMetaObject &PresetAction::getStaticMetaObject() { return staticMetaObject; }
+#endif //Q_NO_DATA_RELOCATION
+
+const QMetaObject *PresetAction::metaObject() const
+{
+    return QObject::d_ptr->metaObject ? QObject::d_ptr->metaObject : &staticMetaObject;
+}
+
+void *PresetAction::qt_metacast(const char *_clname)
+{
+    if (!_clname) return 0;
+    if (!strcmp(_clname, qt_meta_stringdata_PresetAction))
+        return static_cast<void*>(const_cast< PresetAction*>(this));
+    return QAction::qt_metacast(_clname);
+}
+
+int PresetAction::qt_metacall(QMetaObject::Call _c, int _id, void **_a)
+{
+    _id = QAction::qt_metacall(_c, _id, _a);
+    if (_id < 0)
+        return _id;
+    if (_c == QMetaObject::InvokeMetaMethod) {
+        if (_id < 1)
+            qt_static_metacall(this, _c, _id, _a);
+        _id -= 1;
+    }
+    return _id;
+}
+QT_END_MOC_NAMESPACE