FileReader plugin: added possibility to drag&drop files

Author: sept-en

Source/Processors/FileReader/FileReader.cpp

@@ -124,17 +124,35 @@ void FileReader::enabledState (bool t)
 }
 
 
+bool FileReader::isFileSupported (const String& fileName) const
+{
+    const File file (fileName);
+    String ext = file.getFileExtension().toLowerCase().substring (1);
+
+    return isFileExtensionSupported (ext);
+}
+
+
+bool FileReader::isFileExtensionSupported (const String& ext) const
+{
+    const int index = supportedExtensions[ext] - 1;
+    const bool isExtensionSupported = index >= 0;
+
+    return isExtensionSupported;
+}
+
+
 bool FileReader::setFile (String fullpath)
 {
     File file (fullpath);
 
     String ext = file.getFileExtension().toLowerCase().substring (1);
-
     const int index = supportedExtensions[ext] - 1;
-    const bool isSupportedFileExtension = index >= 0;
+    const bool isExtensionSupported = index >= 0;
 
-    if (isSupportedFileExtension)
+    if (isExtensionSupported)
     {
+        const int index = supportedExtensions[ext] - 1;
         Plugin::FileSourceInfo sourceInfo = AccessClass::getPluginManager()->getFileSourceInfo (index);
         input = sourceInfo.creator();
     }

Source/Processors/FileReader/FileReader.h

@@ -70,6 +70,9 @@ class FileReader : public GenericProcessor
     String getFile() const;
     bool setFile (String fullpath);
 
+    bool isFileSupported          (const String& filename) const;
+    bool isFileExtensionSupported (const String& ext) const;
+
 
 private:
     void setActiveRecording (int index);

Source/Processors/FileReader/FileReaderEditor.cpp

@@ -33,7 +33,8 @@ static const Font FONT_LABEL ("Small Text", 10, Font::plain);
 FileReaderEditor::FileReaderEditor (GenericProcessor* parentNode, bool useDefaultParameterEditors = true)
     : GenericEditor (parentNode, useDefaultParameterEditors)
     , fileReader   (static_cast<FileReader*> (parentNode))
-    , recTotalTime (0)
+    , recTotalTime              (0)
+    , m_isFileDragAndDropActive (false)
 {
     lastFilePath = File::getCurrentWorkingDirectory();
 
@@ -91,6 +92,17 @@ void FileReaderEditor::setFile (String file)
 }
 
 
+void FileReaderEditor::paintOverChildren (Graphics& g)
+{
+    // Draw a frame around component if files are drag&dropping now
+    if (m_isFileDragAndDropActive)
+    {
+        g.setColour (Colours::aqua);
+        g.drawRect (getLocalBounds(), 2.f);
+    }
+}
+
+
 void FileReaderEditor::buttonEvent (Button* button)
 {
     if (! acquisitionIsActive)
@@ -251,6 +263,45 @@ void FileReaderEditor::loadCustomParameters (XmlElement* xml)
 }
 
 
+bool FileReaderEditor::isInterestedInFileDrag (const StringArray& files)
+{
+    if (! acquisitionIsActive)
+    {
+        const bool isExtensionSupported = fileReader->isFileSupported (files[0]);
+        m_isFileDragAndDropActive = true;
+
+        return isExtensionSupported;
+    }
+
+    return false;
+}
+
+
+void FileReaderEditor::fileDragExit (const StringArray& files)
+{
+    m_isFileDragAndDropActive = false;
+
+    repaint();
+}
+
+
+void FileReaderEditor::fileDragEnter (const StringArray& files, int x, int y)
+{
+    m_isFileDragAndDropActive = true;
+
+    repaint();
+}
+
+
+void FileReaderEditor::filesDropped (const StringArray& files, int x, int y)
+{
+    setFile (files[0]);
+
+    m_isFileDragAndDropActive = false;
+    repaint();
+}
+
+
 // DualTimeComponent
 // ================================================================================
 DualTimeComponent::DualTimeComponent (FileReaderEditor* e, bool editable)
@@ -298,15 +349,14 @@ DualTimeComponent::~DualTimeComponent()
 
 void DualTimeComponent::paint (Graphics& g)
 {
-    g.setFont (FONT_LABEL);
-    g.setColour (Colours::darkgrey);
-
     String sep;
     if (isEditable)
         sep = "-";
     else
         sep = "/";
 
+    g.setFont (FONT_LABEL);
+    g.setColour (Colours::darkgrey);
     g.drawText (sep, 78, 0, 5, 20, Justification::centred, false);
 }
 

Source/Processors/FileReader/FileReaderEditor.h

@@ -41,17 +41,27 @@ class FileSource;
 */
 
 class FileReaderEditor  : public GenericEditor
+                        , public FileDragAndDropTarget
                         , public ComboBox::Listener
 {
 public:
     FileReaderEditor (GenericProcessor* parentNode, bool useDefaultParameterEditors);
     virtual ~FileReaderEditor();
 
+    void paintOverChildren (Graphics& g) override;
+
     void buttonEvent (Button* button) override;
 
     void saveCustomParameters (XmlElement*) override;
     void loadCustomParameters (XmlElement*) override;
 
+    // FileDragAndDropTarget methods
+    // ============================================
+    bool isInterestedInFileDrag (const StringArray& files)  override;
+    void fileDragExit           (const StringArray& files)  override;
+    void filesDropped           (const StringArray& files, int x, int y)  override;
+    void fileDragEnter          (const StringArray& files, int x, int y)  override;
+
     bool setPlaybackStartTime (unsigned int ms);
     bool setPlaybackStopTime  (unsigned int ms);
     void setTotalTime   (unsigned int ms);
@@ -79,6 +89,8 @@ class FileReaderEditor  : public GenericEditor
     FileReader* fileReader;
     unsigned int recTotalTime;
 
+    bool m_isFileDragAndDropActive;
+
     File lastFilePath;
 
     JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(FileReaderEditor);