First steps of filebrowser support (double-click working)

resources/ui/carla.ui

@@ -232,6 +232,21 @@
        <attribute name="title">
         <string>Disk</string>
        </attribute>
+       <layout class="QVBoxLayout" name="verticalLayout_3">
+        <property name="spacing">
+         <number>0</number>
+        </property>
+        <property name="margin">
+         <number>0</number>
+        </property>
+        <item>
+         <widget class="QTreeView" name="fileTreeView">
+          <property name="horizontalScrollBarPolicy">
+           <enum>Qt::ScrollBarAlwaysOn</enum>
+          </property>
+         </widget>
+        </item>
+       </layout>
       </widget>
      </widget>
     </item>

source/backend/CarlaStandalone.hpp

@@ -152,6 +152,7 @@ struct CarlaScalePointInfo {
 };
 
 CARLA_EXPORT const char* carla_get_extended_license_text();
+CARLA_EXPORT const char* carla_get_supported_file_types();
 
 CARLA_EXPORT unsigned int carla_get_engine_driver_count();
 CARLA_EXPORT const char* carla_get_engine_driver_name(unsigned int index);

source/backend/standalone/CarlaStandalone.cpp

@@ -151,6 +151,35 @@ const char* carla_get_extended_license_text()
     return retText;
 }
 
+const char* carla_get_supported_file_types()
+{
+    static CarlaString retText;
+
+    if (retText.isEmpty())
+    {
+        // Base type
+        retText = "*.carxp";
+
+        // Sample kits
+#ifdef WANT_FLUIDSYNTH
+        retText += ";*.sf2";
+#endif
+#ifdef WANT_LINUXSAMPLER
+        retText += ";*.gig;*.sfz";
+#endif
+
+        // Special files provided by internal plugins
+#ifdef WANT_AUDIOFILE
+        retText += ";*.aac;*.flac;*.oga;*.ogg;*.mp3;*.wav";
+#endif
+#ifdef WANT_MIDIFILE
+        retText += ";*.mid;*.midi";
+#endif
+    }
+
+    return retText;
+}
+
 // -------------------------------------------------------------------------------------------------------------------
 
 unsigned int carla_get_engine_driver_count()

source/carla.py

@@ -19,8 +19,9 @@
 # ------------------------------------------------------------------------------------------------------------
 # Imports (Global)
 
-from PyQt4.QtCore import Qt, QPointF, QSize
-from PyQt4.QtGui import QApplication, QDialogButtonBox, QMainWindow, QResizeEvent
+from time import sleep
+from PyQt4.QtCore import Qt, QModelIndex, QPointF, QSize
+from PyQt4.QtGui import QApplication, QDialogButtonBox, QFileSystemModel, QMainWindow, QResizeEvent
 
 # ------------------------------------------------------------------------------------------------------------
 # Imports (Custom Stuff)
@@ -551,6 +552,8 @@ class CarlaMainW(QMainWindow):
         self.fIdleTimerFast = 0
         self.fIdleTimerSlow = 0
 
+        self.fLastLoadedPluginId = -1
+
         #self._nsmAnnounce2str = ""
         #self._nsmOpen1str = ""
         #self._nsmOpen2str = ""
@@ -560,6 +563,17 @@ class CarlaMainW(QMainWindow):
         # -------------------------------------------------------------
         # Set-up GUI stuff
 
+        self.fDirModel = QFileSystemModel(self)
+        self.fDirModel.setNameFilters(cString(Carla.host.get_supported_file_types()).split(";"))
+        self.fDirModel.setRootPath(HOME)
+
+        self.ui.fileTreeView.setModel(self.fDirModel)
+        self.ui.fileTreeView.setRootIndex(self.fDirModel.index(HOME))
+        self.ui.fileTreeView.setColumnHidden(1, True)
+        self.ui.fileTreeView.setColumnHidden(2, True)
+        self.ui.fileTreeView.setColumnHidden(3, True)
+        self.ui.fileTreeView.setHeaderHidden(True)
+
         self.ui.act_engine_start.setEnabled(False)
         self.ui.act_engine_stop.setEnabled(False)
         self.ui.act_plugin_remove_all.setEnabled(False)
@@ -635,6 +649,7 @@ class CarlaMainW(QMainWindow):
         self.connect(self.ui.b_transport_play, SIGNAL("clicked(bool)"), SLOT("slot_transportPlayPause(bool)"))
         self.connect(self.ui.b_transport_stop, SIGNAL("clicked()"), SLOT("slot_transportStop()"))
 
+        self.connect(self.ui.fileTreeView, SIGNAL("doubleClicked(QModelIndex)"), SLOT("slot_fileTreeDoubleClicked(QModelIndex)"))
         self.connect(self.ui.miniCanvasPreview, SIGNAL("miniCanvasMoved(double, double)"), SLOT("slot_miniCanvasMoved(double, double)"))
 
         self.connect(self.ui.graphicsView.horizontalScrollBar(), SIGNAL("valueChanged(int)"), SLOT("slot_horizontalScrollBarChanged(int)"))
@@ -686,6 +701,46 @@ class CarlaMainW(QMainWindow):
         #else:
         QTimer.singleShot(0, self, SLOT("slot_engineStart()"))
 
+    @pyqtSlot(QModelIndex)
+    def slot_fileTreeDoubleClicked(self, modelIndex):
+        filename = self.fDirModel.filePath(modelIndex)
+        print(filename)
+
+        if not os.path.exists(filename):
+            return
+        if not os.path.isfile(filename):
+            return
+
+        extension = filename.rsplit(".", 1)[-1].lower()
+
+        if extension == "carxp":
+            Carla.host.load_project(filename)
+
+        elif extension == "gig":
+            Carla.host.add_plugin(BINARY_NATIVE, PLUGIN_GIG, filename, None, os.path.basename(filename), None)
+
+        elif extension == "sf2":
+            Carla.host.add_plugin(BINARY_NATIVE, PLUGIN_SF2, filename, None, os.path.basename(filename), None)
+
+        elif extension == "sfz":
+            Carla.host.add_plugin(BINARY_NATIVE, PLUGIN_SFZ, filename, None, os.path.basename(filename), None)
+
+        elif extension in ("aac", "flac", "oga", "ogg", "mp3", "wav"):
+            self.fLastLoadedPluginId = -2
+            if Carla.host.add_plugin(BINARY_NATIVE, PLUGIN_INTERNAL, None, None, "audiofile", None):
+                while (self.fLastLoadedPluginId == -2): sleep(0.2)
+                idx = self.fLastLoadedPluginId
+                self.fLastLoadedPluginId = -1
+                Carla.host.set_custom_data(idx, CUSTOM_DATA_STRING, "file00", filename)
+
+        elif extension in ("mid", "midi"):
+            self.fLastLoadedPluginId = -2
+            if Carla.host.add_plugin(BINARY_NATIVE, PLUGIN_INTERNAL, None, None, "midifile", None):
+                while (self.fLastLoadedPluginId == -2): sleep(0.2)
+                idx = self.fLastLoadedPluginId
+                self.fLastLoadedPluginId = -1
+                Carla.host.set_custom_data(idx, CUSTOM_DATA_STRING, "file", filename)
+
     @pyqtSlot(float)
     def slot_canvasScaleChanged(self, scale):
         self.ui.miniCanvasPreview.setViewScale(scale)
@@ -1052,6 +1107,9 @@ class CarlaMainW(QMainWindow):
         if self.fPluginCount == 1:
             self.ui.act_plugin_remove_all.setEnabled(True)
 
+        if self.fLastLoadedPluginId == -2:
+            self.fLastLoadedPluginId = pluginId
+
     @pyqtSlot(int)
     def slot_handlePluginRemovedCallback(self, pluginId):
         if pluginId >= self.fPluginCount:

source/carla_backend.py

@@ -152,6 +152,9 @@ class Host(object):
         self.lib.carla_get_extended_license_text.argtypes = None
         self.lib.carla_get_extended_license_text.restype = c_char_p
 
+        self.lib.carla_get_supported_file_types.argtypes = None
+        self.lib.carla_get_supported_file_types.restype = c_char_p
+
         self.lib.carla_get_engine_driver_count.argtypes = None
         self.lib.carla_get_engine_driver_count.restype = c_uint
 
@@ -376,6 +379,9 @@ class Host(object):
     def get_extended_license_text(self):
         return self.lib.carla_get_extended_license_text()
 
+    def get_supported_file_types(self):
+        return self.lib.carla_get_supported_file_types()
+
     def get_engine_driver_count(self):
         return self.lib.carla_get_engine_driver_count()