Add action to copy canvas as image to clipboard

Signed-off-by: falkTX <falktx@falktx.com>

resources/ui/carla_host.ui

@@ -541,6 +541,7 @@
     <addaction name="act_canvas_save_image"/>
     <addaction name="act_canvas_save_image_2x"/>
     <addaction name="act_canvas_save_image_4x"/>
+    <addaction name="act_canvas_copy_clipboard"/>
    </widget>
    <widget class="QMenu" name="menu_Settings">
     <property name="title">
@@ -1650,6 +1651,14 @@
     <string>Save Image... (4x zoom)</string>
    </property>
   </action>
+  <action name="act_canvas_copy_clipboard">
+   <property name="text">
+    <string>Copy as Image to Clipboard</string>
+   </property>
+   <property name="shortcut">
+    <string>Ctrl+Shift+C</string>
+   </property>
+  </action>
  </widget>
  <customwidgets>
   <customwidget>

source/frontend/carla_host.py

@@ -500,6 +500,7 @@ class HostWindow(QMainWindow):
             self.ui.act_canvas_save_image.triggered.connect(self.slot_canvasSaveImage)
             self.ui.act_canvas_save_image_2x.triggered.connect(self.slot_canvasSaveImage)
             self.ui.act_canvas_save_image_4x.triggered.connect(self.slot_canvasSaveImage)
+            self.ui.act_canvas_copy_clipboard.triggered.connect(self.slot_canvasCopyToClipboard)
             self.ui.act_canvas_arrange.setEnabled(False) # TODO, later
             self.ui.graphicsView.horizontalScrollBar().valueChanged.connect(self.slot_horizontalScrollBarChanged)
             self.ui.graphicsView.verticalScrollBar().valueChanged.connect(self.slot_verticalScrollBarChanged)
@@ -1591,6 +1592,19 @@ class HostWindow(QMainWindow):
 
         iw.write(image)
 
+    @pyqtSlot()
+    def slot_canvasCopyToClipboard(self):
+        image   = QImage(self.scene.width(), self.scene.height(), QImage.Format_RGB32)
+        painter = QPainter(image)
+        painter.save()
+        painter.setRenderHints(painter.renderHints() | QPainter.Antialiasing | QPainter.TextAntialiasing)
+        self.scene.clearSelection()
+        self.scene.render(painter)
+        painter.restore()
+        del painter
+
+        QApplication.clipboard().setImage(image)
+
     # --------------------------------------------------------------------------------------------------------
     # Canvas (canvas callbacks)