Adding a delay to poping up the pie menu

diff --git a/src/libraries/qtpie.py b/src/libraries/qtpie.py
index 3f1ecec..cab868b 100755 (executable)
--- a/src/libraries/qtpie.py
+++ b/src/libraries/qtpie.py
@@ -468,8 +468,10 @@ class QPieDisplay(QtGui.QWidget):
                QtGui.QWidget.paintEvent(self, paintEvent)
 
        def selectAt(self, index):
+               oldIndex = self._selectionIndex
                self._selectionIndex = index
-               self.update()
+               if self.isVisible():
+                       self.update()
 
 
 class QPieButton(QtGui.QWidget):
@@ -481,6 +483,7 @@ class QPieButton(QtGui.QWidget):
        aboutToHide = QtCore.pyqtSignal()
 
        BUTTON_RADIUS = 24
+       DELAY = 250
 
        def __init__(self, buttonSlice, parent = None):
                QtGui.QWidget.__init__(self, parent)
@@ -497,6 +500,12 @@ class QPieButton(QtGui.QWidget):
                self._buttonArtist = PieArtist(self._buttonFiling)
                self._poppedUp = False
 
+               self._delayPopupTimer = QtCore.QTimer()
+               self._delayPopupTimer.setInterval(self.DELAY)
+               self._delayPopupTimer.setSingleShot(True)
+               self._delayPopupTimer.timeout.connect(self._on_delayed_popup)
+               self._popupLocation = None
+
                self._mousePosition = None
                self.setFocusPolicy(QtCore.Qt.StrongFocus)
 
@@ -544,16 +553,22 @@ class QPieButton(QtGui.QWidget):
 
        @misc_utils.log_exception(_moduleLogger)
        def mousePressEvent(self, mouseEvent):
-               self._popup_child(mouseEvent.globalPos())
                lastSelection = self._selectionIndex
 
                lastMousePos = mouseEvent.pos()
                self._mousePosition = lastMousePos
                self._update_selection(self._cachedCenterPosition)
 
-               if lastSelection != self._selectionIndex:
-                       self.highlighted.emit(self._selectionIndex)
-                       self._display.selectAt(self._selectionIndex)
+               self.highlighted.emit(self._selectionIndex)
+
+               self._display.selectAt(self._selectionIndex)
+               self._popupLocation = mouseEvent.globalPos()
+               self._delayPopupTimer.start()
+
+       @misc_utils.log_exception(_moduleLogger)
+       def _on_delayed_popup(self):
+               assert self._popupLocation is not None
+               self._popup_child(self._popupLocation)
 
        @misc_utils.log_exception(_moduleLogger)
        def mouseMoveEvent(self, mouseEvent):
@@ -571,8 +586,14 @@ class QPieButton(QtGui.QWidget):
                        self.highlighted.emit(self._selectionIndex)
                        self._display.selectAt(self._selectionIndex)
 
+               if self._selectionIndex != PieFiling.SELECTION_CENTER and self._delayPopupTimer.isActive():
+                       self._on_delayed_popup()
+
        @misc_utils.log_exception(_moduleLogger)
        def mouseReleaseEvent(self, mouseEvent):
+               self._delayPopupTimer.stop()
+               self._popupLocation = None
+
                lastSelection = self._selectionIndex
 
                lastMousePos = mouseEvent.pos()
@@ -610,9 +631,13 @@ class QPieButton(QtGui.QWidget):
                        self._select_at(PieFiling.SELECTION_CENTER)
                        self._display.selectAt(self._selectionIndex)
                elif keyEvent.key() in [QtCore.Qt.Key_Return, QtCore.Qt.Key_Enter, QtCore.Qt.Key_Space]:
+                       self._delayPopupTimer.stop()
+                       self._popupLocation = None
                        self._activate_at(self._selectionIndex)
                        self._hide_child()
                elif keyEvent.key() in [QtCore.Qt.Key_Escape, QtCore.Qt.Key_Backspace]:
+                       self._delayPopupTimer.stop()
+                       self._popupLocation = None
                        self._activate_at(PieFiling.SELECTION_NONE)
                        self._hide_child()
                else:
@@ -653,6 +678,9 @@ class QPieButton(QtGui.QWidget):
                self._poppedUp = True
                self.aboutToShow.emit()
 
+               self._delayPopupTimer.stop()
+               self._popupLocation = None
+
                position = position - QtCore.QPoint(self._filing.outerRadius(), self._filing.outerRadius())
                self._display.move(position)
                self._display.show()