QApple: support yaml drops.

Signed-off-by: Andrea Odetti <mariofutire@gmail.com>

linux.md

@@ -70,14 +70,14 @@ The joystick uses evdev (``--device-name /dev/input/by-id/id_of_device``).
 This is based on Qt.
 
 * keyboard shortcuts are listed in the menu entries
-* graphics: runs the native NTSC code
 * joystick: it uses QtGamepad
 * emulator runs in the main UI thread
 * Qt timers are very coarse: the emulator needs to dynamically adapt the cycles to execute
 * the app runs at 60FPS with correction for uneven timer deltas.
 * full speed when disk spins execute up to 5 ms real wall clock of emulator code (then returns to Qt)
-* (standard) audio is supported and there are a few configuration options to tune the latency (default very conservative 200ms)
+* audio is supported and there are a few configuration options to tune the latency (default very conservative 200ms)
 * Open Apple and Solid Apple can be emulated using AltGr and Menu (unfortunately, Alt does not work well)
+* ``yaml`` files can be dropped to restore a saved state
 
 ### ra2
 

source/frontends/qt/qapple.cpp

@@ -44,6 +44,9 @@
 #include <QSettings>
 #include <QAudioOutput>
 #include <QLabel>
+#include <QMimeData>
+#include <QDropEvent>
+#include <QDragEnterEvent>
 
 #include <algorithm>
 
@@ -204,6 +207,8 @@ QApple::QApple(QWidget *parent) :
     on_actionPause_triggered();
     initialiseEmulator();
     loadEmulator(myFrame, myOptions);
+
+    setAcceptDrops(true);
 }
 
 QApple::~QApple()
@@ -554,3 +559,32 @@ void QApple::on_actionQuit_triggered()
 {
     this->close();
 }
+
+void QApple::dragEnterEvent(QDragEnterEvent *event)
+{
+    if (event->mimeData()->hasUrls())
+    {
+        event->acceptProposedAction();
+    }
+}
+
+void QApple::dropEvent(QDropEvent *event)
+{
+    const QMimeData* mimeData = event->mimeData();
+
+    if (mimeData->hasUrls())
+    {
+        const QList<QUrl> urlList = mimeData->urls();
+
+        if (!urlList.isEmpty())
+        {
+            // just use first file
+            const QString file = urlList.first().toLocalFile();
+            if (!file.isEmpty())
+            {
+                event->acceptProposedAction();
+                loadStateFile(file);
+            }
+        }
+   }
+}

source/frontends/qt/qapple.h

@@ -38,8 +38,10 @@ public slots:
     void startEmulator();
 
 protected:
-    void closeEvent(QCloseEvent * event) override;
+    void closeEvent(QCloseEvent *event) override;
     void timerEvent(QTimerEvent *event) override;
+    void dragEnterEvent(QDragEnterEvent *event) override;
+    void dropEvent(QDropEvent *event) override;
 
 private slots: