6 from PyQt4 import QtGui
7 from PyQt4 import QtCore
10 from util import misc as misc_utils
12 class misc_utils(object):
15 def log_exception(logger):
22 _moduleLogger = logging.getLogger(__name__)
28 def _radius_at(center, pos):
33 radius = math.sqrt(xDelta ** 2 + yDelta ** 2)
37 def _angle_at(center, pos):
42 radius = math.sqrt(xDelta ** 2 + yDelta ** 2)
43 angle = math.acos(xDelta / radius)
45 angle = _TWOPI - angle
50 class QActionPieItem(object):
52 def __init__(self, action, weight = 1):
59 def setWeight(self, weight):
65 def setEnabled(self, enabled = True):
66 self._action.setEnabled(enabled)
69 return self._action.isEnabled()
72 class PieFiling(object):
74 INNER_RADIUS_DEFAULT = 64
75 OUTER_RADIUS_DEFAULT = 192
80 NULL_CENTER = QActionPieItem(QtGui.QAction(None))
83 self._innerRadius = self.INNER_RADIUS_DEFAULT
84 self._outerRadius = self.OUTER_RADIUS_DEFAULT
86 self._center = self.NULL_CENTER
88 self._cacheIndexToAngle = {}
89 self._cacheTotalWeight = 0
91 def insertItem(self, item, index = -1):
92 self._children.insert(index, item)
93 self._invalidate_cache()
95 def removeItemAt(self, index):
96 item = self._children.pop(index)
97 self._invalidate_cache()
99 def set_center(self, item):
101 item = self.NULL_CENTER
108 del self._children[:]
109 self._center = self.NULL_CENTER
110 self._invalidate_cache()
112 def itemAt(self, index):
113 return self._children[index]
115 def indexAt(self, center, point):
116 return self._angle_to_index(_angle_at(center, point))
118 def innerRadius(self):
119 return self._innerRadius
121 def setInnerRadius(self, radius):
122 self._innerRadius = radius
124 def outerRadius(self):
125 return self._outerRadius
127 def setOuterRadius(self, radius):
128 self._outerRadius = radius
131 return iter(self._children)
134 return len(self._children)
136 def __getitem__(self, index):
137 return self._children[index]
139 def _invalidate_cache(self):
140 self._cacheIndexToAngle.clear()
141 self._cacheTotalWeight = sum(child.weight() for child in self._children)
142 if self._cacheTotalWeight == 0:
143 self._cacheTotalWeight = 1
145 def _index_to_angle(self, index, isShifted):
146 key = index, isShifted
147 if key in self._cacheIndexToAngle:
148 return self._cacheIndexToAngle[key]
149 index = index % len(self._children)
151 baseAngle = _TWOPI / self._cacheTotalWeight
156 angle -= (self._children[0].weight() * baseAngle) / 2
158 angle -= baseAngle / 2
162 for i, child in enumerate(self._children):
165 angle += child.weight() * baseAngle
166 while _TWOPI < angle:
169 self._cacheIndexToAngle[key] = angle
172 def _angle_to_index(self, angle):
173 numChildren = len(self._children)
175 return self.SELECTION_CENTER
177 baseAngle = _TWOPI / self._cacheTotalWeight
179 iterAngle = math.pi / 2 - (self.itemAt(0).weight() * baseAngle) / 2
183 oldIterAngle = iterAngle
184 for index, child in enumerate(self._children):
185 iterAngle += child.weight() * baseAngle
186 if oldIterAngle < angle and angle <= iterAngle:
187 return index - 1 if index != 0 else numChildren - 1
188 elif oldIterAngle < (angle + _TWOPI) and (angle + _TWOPI <= iterAngle):
189 return index - 1 if index != 0 else numChildren - 1
190 oldIterAngle = iterAngle
193 class PieArtist(object):
195 ICON_SIZE_DEFAULT = 48
197 SHAPE_CIRCLE = "circle"
198 SHAPE_SQUARE = "square"
199 DEFAULT_SHAPE = SHAPE_SQUARE
201 def __init__(self, filing):
202 self._filing = filing
204 self._cachedOuterRadius = self._filing.outerRadius()
205 self._cachedInnerRadius = self._filing.innerRadius()
206 canvasSize = self._cachedOuterRadius * 2 + 1
207 self._canvas = QtGui.QPixmap(canvasSize, canvasSize)
212 diameter = self._filing.outerRadius() * 2 + 1
213 return QtCore.QSize(diameter, diameter)
215 def centerSize(self):
216 painter = QtGui.QPainter(self._canvas)
217 text = self._filing.center().action().text()
218 fontMetrics = painter.fontMetrics()
220 textBoundingRect = fontMetrics.boundingRect(text)
222 textBoundingRect = QtCore.QRect()
223 textWidth = textBoundingRect.width()
224 textHeight = textBoundingRect.height()
227 textWidth + self.ICON_SIZE_DEFAULT,
228 max(textHeight, self.ICON_SIZE_DEFAULT),
231 def show(self, palette):
232 self.palette = palette
235 self._cachedOuterRadius != self._filing.outerRadius() or
236 self._cachedInnerRadius != self._filing.innerRadius()
238 self._cachedOuterRadius = self._filing.outerRadius()
239 self._cachedInnerRadius = self._filing.innerRadius()
240 self._canvas = self._canvas.scaled(self.pieSize())
242 if self._mask is None:
243 self._mask = QtGui.QBitmap(self._canvas.size())
244 self._mask.fill(QtCore.Qt.color0)
245 self._generate_mask(self._mask)
246 self._canvas.setMask(self._mask)
252 def paint(self, selectionIndex):
253 painter = QtGui.QPainter(self._canvas)
254 painter.setRenderHint(QtGui.QPainter.Antialiasing, True)
256 adjustmentRect = self._canvas.rect().adjusted(0, 0, -1, -1)
258 numChildren = len(self._filing)
260 if selectionIndex == PieFiling.SELECTION_CENTER and self._filing.center().isEnabled():
261 painter.setBrush(self.palette.highlight())
263 painter.setBrush(self.palette.window())
264 painter.setPen(self.palette.mid().color())
266 painter.drawRect(self._canvas.rect())
267 self._paint_center_foreground(painter, selectionIndex)
269 elif numChildren == 1:
270 if selectionIndex == 0 and self._filing[0].isEnabled():
271 painter.setBrush(self.palette.highlight())
273 painter.setBrush(self.palette.window())
275 painter.fillRect(self._canvas.rect(), painter.brush())
277 for i in xrange(len(self._filing)):
278 self._paint_slice_background(painter, adjustmentRect, i, selectionIndex)
280 self._paint_center_background(painter, adjustmentRect, selectionIndex)
281 self._paint_center_foreground(painter, selectionIndex)
283 for i in xrange(len(self._filing)):
284 self._paint_slice_foreground(painter, i, selectionIndex)
288 def _generate_mask(self, mask):
290 Specifies on the mask the shape of the pie menu
292 painter = QtGui.QPainter(mask)
293 painter.setPen(QtCore.Qt.color1)
294 painter.setBrush(QtCore.Qt.color1)
295 if self.DEFAULT_SHAPE == self.SHAPE_SQUARE:
296 painter.drawRect(mask.rect())
297 elif self.DEFAULT_SHAPE == self.SHAPE_CIRCLE:
298 painter.drawEllipse(mask.rect().adjusted(0, 0, -1, -1))
300 raise NotImplementedError(self.DEFAULT_SHAPE)
302 def _paint_slice_background(self, painter, adjustmentRect, i, selectionIndex):
303 if self.DEFAULT_SHAPE == self.SHAPE_SQUARE:
304 currentWidth = adjustmentRect.width()
305 newWidth = math.sqrt(2) * currentWidth
306 dx = (newWidth - currentWidth) / 2
307 adjustmentRect = adjustmentRect.adjusted(-dx, -dx, dx, dx)
308 elif self.DEFAULT_SHAPE == self.SHAPE_CIRCLE:
311 raise NotImplementedError(self.DEFAULT_SHAPE)
313 if i == selectionIndex and self._filing[i].isEnabled():
314 painter.setBrush(self.palette.highlight())
316 painter.setBrush(self.palette.window())
317 painter.setPen(self.palette.mid().color())
319 a = self._filing._index_to_angle(i, True)
320 b = self._filing._index_to_angle(i + 1, True)
327 startAngleInDeg = (a * 360 * 16) / _TWOPI
328 sizeInDeg = (size * 360 * 16) / _TWOPI
329 painter.drawPie(adjustmentRect, int(startAngleInDeg), int(sizeInDeg))
331 def _paint_slice_foreground(self, painter, i, selectionIndex):
332 child = self._filing[i]
334 a = self._filing._index_to_angle(i, True)
335 b = self._filing._index_to_angle(i + 1, True)
338 middleAngle = (a + b) / 2
339 averageRadius = (self._cachedInnerRadius + self._cachedOuterRadius) / 2
341 sliceX = averageRadius * math.cos(middleAngle)
342 sliceY = - averageRadius * math.sin(middleAngle)
344 piePos = self._canvas.rect().center()
348 painter, child.action(), i == selectionIndex, pieX+sliceX, pieY+sliceY
351 def _paint_label(self, painter, action, isSelected, x, y):
353 fontMetrics = painter.fontMetrics()
355 textBoundingRect = fontMetrics.boundingRect(text)
357 textBoundingRect = QtCore.QRect()
358 textWidth = textBoundingRect.width()
359 textHeight = textBoundingRect.height()
361 icon = action.icon().pixmap(
362 QtCore.QSize(self.ICON_SIZE_DEFAULT, self.ICON_SIZE_DEFAULT),
366 iconWidth = icon.width()
367 iconHeight = icon.width()
368 averageWidth = (iconWidth + textWidth)/2
369 if not icon.isNull():
370 iconRect = QtCore.QRect(
377 painter.drawPixmap(iconRect, icon)
381 if action.isEnabled():
382 pen = self.palette.highlightedText()
383 brush = self.palette.highlight()
385 pen = self.palette.mid()
386 brush = self.palette.window()
388 if action.isEnabled():
389 pen = self.palette.windowText()
391 pen = self.palette.mid()
392 brush = self.palette.window()
394 leftX = x - averageWidth + iconWidth
395 topY = y + textHeight/2
396 painter.setPen(pen.color())
397 painter.setBrush(brush)
398 painter.drawText(leftX, topY, text)
400 def _paint_center_background(self, painter, adjustmentRect, selectionIndex):
401 dark = self.palette.mid().color()
402 light = self.palette.light().color()
403 if selectionIndex == PieFiling.SELECTION_CENTER and self._filing.center().isEnabled():
404 background = self.palette.highlight().color()
406 background = self.palette.window().color()
408 innerRadius = self._cachedInnerRadius
409 adjustmentCenterPos = adjustmentRect.center()
410 innerRect = QtCore.QRect(
411 adjustmentCenterPos.x() - innerRadius,
412 adjustmentCenterPos.y() - innerRadius,
417 painter.setPen(QtCore.Qt.NoPen)
418 painter.setBrush(background)
419 painter.drawPie(innerRect, 0, 360 * 16)
421 painter.setPen(QtGui.QPen(dark, 1))
422 painter.setBrush(QtCore.Qt.NoBrush)
423 painter.drawEllipse(innerRect)
425 if self.DEFAULT_SHAPE == self.SHAPE_SQUARE:
427 elif self.DEFAULT_SHAPE == self.SHAPE_CIRCLE:
428 painter.setPen(QtGui.QPen(dark, 1))
429 painter.setBrush(QtCore.Qt.NoBrush)
430 painter.drawEllipse(adjustmentRect)
432 raise NotImplementedError(self.DEFAULT_SHAPE)
434 def _paint_center_foreground(self, painter, selectionIndex):
435 centerPos = self._canvas.rect().center()
444 self._filing.center().action(),
445 selectionIndex == PieFiling.SELECTION_CENTER,
450 class QPieDisplay(QtGui.QWidget):
452 def __init__(self, filing, parent = None, flags = QtCore.Qt.Window):
453 QtGui.QWidget.__init__(self, parent, flags)
454 self._filing = filing
455 self._artist = PieArtist(self._filing)
456 self._selectionIndex = PieFiling.SELECTION_NONE
458 def popup(self, pos):
459 self._update_selection(pos)
463 return self._artist.pieSize()
465 @misc_utils.log_exception(_moduleLogger)
466 def showEvent(self, showEvent):
467 mask = self._artist.show(self.palette())
470 QtGui.QWidget.showEvent(self, showEvent)
472 @misc_utils.log_exception(_moduleLogger)
473 def hideEvent(self, hideEvent):
475 self._selectionIndex = PieFiling.SELECTION_NONE
476 QtGui.QWidget.hideEvent(self, hideEvent)
478 @misc_utils.log_exception(_moduleLogger)
479 def paintEvent(self, paintEvent):
480 canvas = self._artist.paint(self._selectionIndex)
482 screen = QtGui.QPainter(self)
483 screen.drawPixmap(QtCore.QPoint(0, 0), canvas)
485 QtGui.QWidget.paintEvent(self, paintEvent)
487 def selectAt(self, index):
488 oldIndex = self._selectionIndex
489 self._selectionIndex = index
494 class QPieButton(QtGui.QWidget):
496 activated = QtCore.pyqtSignal(int)
497 highlighted = QtCore.pyqtSignal(int)
498 canceled = QtCore.pyqtSignal()
499 aboutToShow = QtCore.pyqtSignal()
500 aboutToHide = QtCore.pyqtSignal()
505 def __init__(self, buttonSlice, parent = None):
506 # @bug Artifacts on Maemo 5 due to window 3D effects, find way to disable them for just these?
507 # @bug The pie's are being pushed back on screen on Maemo, leading to coordinate issues
508 QtGui.QWidget.__init__(self, parent)
509 self._cachedCenterPosition = self.rect().center()
511 self._filing = PieFiling()
512 self._display = QPieDisplay(self._filing, None, QtCore.Qt.SplashScreen)
513 self._selectionIndex = PieFiling.SELECTION_NONE
515 self._buttonFiling = PieFiling()
516 self._buttonFiling.set_center(buttonSlice)
517 self._buttonFiling.setOuterRadius(self.BUTTON_RADIUS)
518 self._buttonArtist = PieArtist(self._buttonFiling)
519 self._poppedUp = False
521 self._delayPopupTimer = QtCore.QTimer()
522 self._delayPopupTimer.setInterval(self.DELAY)
523 self._delayPopupTimer.setSingleShot(True)
524 self._delayPopupTimer.timeout.connect(self._on_delayed_popup)
525 self._popupLocation = None
527 self._mousePosition = None
528 self.setFocusPolicy(QtCore.Qt.StrongFocus)
530 def insertItem(self, item, index = -1):
531 self._filing.insertItem(item, index)
533 def removeItemAt(self, index):
534 self._filing.removeItemAt(index)
536 def set_center(self, item):
537 self._filing.set_center(item)
539 def set_button(self, item):
545 def itemAt(self, index):
546 return self._filing.itemAt(index)
548 def indexAt(self, point):
549 return self._filing.indexAt(self._cachedCenterPosition, point)
551 def innerRadius(self):
552 return self._filing.innerRadius()
554 def setInnerRadius(self, radius):
555 self._filing.setInnerRadius(radius)
557 def outerRadius(self):
558 return self._filing.outerRadius()
560 def setOuterRadius(self, radius):
561 self._filing.setOuterRadius(radius)
563 def buttonRadius(self):
564 return self._buttonFiling.outerRadius()
566 def setButtonRadius(self, radius):
567 self._buttonFiling.setOuterRadius(radius)
568 self._buttonArtist.show(self.palette())
570 def minimumSizeHint(self):
571 return self._buttonArtist.centerSize()
573 @misc_utils.log_exception(_moduleLogger)
574 def mousePressEvent(self, mouseEvent):
575 lastSelection = self._selectionIndex
577 lastMousePos = mouseEvent.pos()
578 self._mousePosition = lastMousePos
579 self._update_selection(self._cachedCenterPosition)
581 self.highlighted.emit(self._selectionIndex)
583 self._display.selectAt(self._selectionIndex)
584 self._popupLocation = mouseEvent.globalPos()
585 self._delayPopupTimer.start()
588 @misc_utils.log_exception(_moduleLogger)
589 def _on_delayed_popup(self):
590 assert self._popupLocation is not None
591 self._popup_child(self._popupLocation)
593 @misc_utils.log_exception(_moduleLogger)
594 def mouseMoveEvent(self, mouseEvent):
595 lastSelection = self._selectionIndex
597 lastMousePos = mouseEvent.pos()
598 if self._mousePosition is None:
600 self._update_selection(lastMousePos)
603 self._update_selection(
604 self._cachedCenterPosition + (lastMousePos - self._mousePosition),
608 if lastSelection != self._selectionIndex:
609 self.highlighted.emit(self._selectionIndex)
610 self._display.selectAt(self._selectionIndex)
612 if self._selectionIndex != PieFiling.SELECTION_CENTER and self._delayPopupTimer.isActive():
613 self._on_delayed_popup()
615 @misc_utils.log_exception(_moduleLogger)
616 def mouseReleaseEvent(self, mouseEvent):
617 self._delayPopupTimer.stop()
618 self._popupLocation = None
620 lastSelection = self._selectionIndex
622 lastMousePos = mouseEvent.pos()
623 if self._mousePosition is None:
625 self._update_selection(lastMousePos)
628 self._update_selection(
629 self._cachedCenterPosition + (lastMousePos - self._mousePosition),
632 self._mousePosition = None
634 self._activate_at(self._selectionIndex)
637 @misc_utils.log_exception(_moduleLogger)
638 def keyPressEvent(self, keyEvent):
639 if keyEvent.key() in [QtCore.Qt.Key_Right, QtCore.Qt.Key_Down, QtCore.Qt.Key_Tab]:
640 self._popup_child(QtGui.QCursor.pos())
641 if self._selectionIndex != len(self._filing) - 1:
642 nextSelection = self._selectionIndex + 1
645 self._select_at(nextSelection)
646 self._display.selectAt(self._selectionIndex)
647 elif keyEvent.key() in [QtCore.Qt.Key_Left, QtCore.Qt.Key_Up, QtCore.Qt.Key_Backtab]:
648 self._popup_child(QtGui.QCursor.pos())
649 if 0 < self._selectionIndex:
650 nextSelection = self._selectionIndex - 1
652 nextSelection = len(self._filing) - 1
653 self._select_at(nextSelection)
654 self._display.selectAt(self._selectionIndex)
655 elif keyEvent.key() in [QtCore.Qt.Key_Space]:
656 self._popup_child(QtGui.QCursor.pos())
657 self._select_at(PieFiling.SELECTION_CENTER)
658 self._display.selectAt(self._selectionIndex)
659 elif keyEvent.key() in [QtCore.Qt.Key_Return, QtCore.Qt.Key_Enter, QtCore.Qt.Key_Space]:
660 self._delayPopupTimer.stop()
661 self._popupLocation = None
662 self._activate_at(self._selectionIndex)
664 elif keyEvent.key() in [QtCore.Qt.Key_Escape, QtCore.Qt.Key_Backspace]:
665 self._delayPopupTimer.stop()
666 self._popupLocation = None
667 self._activate_at(PieFiling.SELECTION_NONE)
670 QtGui.QWidget.keyPressEvent(self, keyEvent)
672 @misc_utils.log_exception(_moduleLogger)
673 def resizeEvent(self, resizeEvent):
674 self.setButtonRadius(min(resizeEvent.size().width(), resizeEvent.size().height()) / 2 - 1)
675 QtGui.QWidget.resizeEvent(self, resizeEvent)
677 @misc_utils.log_exception(_moduleLogger)
678 def showEvent(self, showEvent):
679 self._buttonArtist.show(self.palette())
680 self._cachedCenterPosition = self.rect().center()
682 QtGui.QWidget.showEvent(self, showEvent)
684 @misc_utils.log_exception(_moduleLogger)
685 def hideEvent(self, hideEvent):
687 self._select_at(PieFiling.SELECTION_NONE)
688 QtGui.QWidget.hideEvent(self, hideEvent)
690 @misc_utils.log_exception(_moduleLogger)
691 def paintEvent(self, paintEvent):
692 self.setButtonRadius(min(self.rect().width(), self.rect().height()) / 2 - 1)
694 canvas = self._buttonArtist.paint(PieFiling.SELECTION_CENTER)
696 canvas = self._buttonArtist.paint(PieFiling.SELECTION_NONE)
698 screen = QtGui.QPainter(self)
699 screen.drawPixmap(QtCore.QPoint(0, 0), canvas)
701 QtGui.QWidget.paintEvent(self, paintEvent)
704 return iter(self._filing)
707 return len(self._filing)
709 def _popup_child(self, position):
710 self._poppedUp = True
711 self.aboutToShow.emit()
713 self._delayPopupTimer.stop()
714 self._popupLocation = None
716 position = position - QtCore.QPoint(self._filing.outerRadius(), self._filing.outerRadius())
717 self._display.move(position)
722 def _hide_child(self):
723 self._poppedUp = False
724 self.aboutToHide.emit()
728 def _select_at(self, index):
729 self._selectionIndex = index
731 def _update_selection(self, lastMousePos, ignoreOuter = False):
732 radius = _radius_at(self._cachedCenterPosition, lastMousePos)
733 if radius < self._filing.innerRadius():
734 self._select_at(PieFiling.SELECTION_CENTER)
735 elif radius <= self._filing.outerRadius() or ignoreOuter:
736 self._select_at(self.indexAt(lastMousePos))
738 self._select_at(PieFiling.SELECTION_NONE)
740 def _activate_at(self, index):
741 if index == PieFiling.SELECTION_NONE:
744 elif index == PieFiling.SELECTION_CENTER:
745 child = self._filing.center()
747 child = self.itemAt(index)
749 if child.action().isEnabled():
750 child.action().trigger()
751 self.activated.emit(index)
756 class QPieMenu(QtGui.QWidget):
758 activated = QtCore.pyqtSignal(int)
759 highlighted = QtCore.pyqtSignal(int)
760 canceled = QtCore.pyqtSignal()
761 aboutToShow = QtCore.pyqtSignal()
762 aboutToHide = QtCore.pyqtSignal()
764 def __init__(self, parent = None):
765 QtGui.QWidget.__init__(self, parent)
766 self._cachedCenterPosition = self.rect().center()
768 self._filing = PieFiling()
769 self._artist = PieArtist(self._filing)
770 self._selectionIndex = PieFiling.SELECTION_NONE
772 self._mousePosition = ()
773 self.setFocusPolicy(QtCore.Qt.StrongFocus)
775 def popup(self, pos):
776 self._update_selection(pos)
779 def insertItem(self, item, index = -1):
780 self._filing.insertItem(item, index)
783 def removeItemAt(self, index):
784 self._filing.removeItemAt(index)
787 def set_center(self, item):
788 self._filing.set_center(item)
795 def itemAt(self, index):
796 return self._filing.itemAt(index)
798 def indexAt(self, point):
799 return self._filing.indexAt(self._cachedCenterPosition, point)
801 def innerRadius(self):
802 return self._filing.innerRadius()
804 def setInnerRadius(self, radius):
805 self._filing.setInnerRadius(radius)
808 def outerRadius(self):
809 return self._filing.outerRadius()
811 def setOuterRadius(self, radius):
812 self._filing.setOuterRadius(radius)
816 return self._artist.pieSize()
818 @misc_utils.log_exception(_moduleLogger)
819 def mousePressEvent(self, mouseEvent):
820 lastSelection = self._selectionIndex
822 lastMousePos = mouseEvent.pos()
823 self._update_selection(lastMousePos)
824 self._mousePosition = lastMousePos
826 if lastSelection != self._selectionIndex:
827 self.highlighted.emit(self._selectionIndex)
830 @misc_utils.log_exception(_moduleLogger)
831 def mouseMoveEvent(self, mouseEvent):
832 lastSelection = self._selectionIndex
834 lastMousePos = mouseEvent.pos()
835 self._update_selection(lastMousePos)
837 if lastSelection != self._selectionIndex:
838 self.highlighted.emit(self._selectionIndex)
841 @misc_utils.log_exception(_moduleLogger)
842 def mouseReleaseEvent(self, mouseEvent):
843 lastSelection = self._selectionIndex
845 lastMousePos = mouseEvent.pos()
846 self._update_selection(lastMousePos)
847 self._mousePosition = ()
849 self._activate_at(self._selectionIndex)
852 @misc_utils.log_exception(_moduleLogger)
853 def keyPressEvent(self, keyEvent):
854 if keyEvent.key() in [QtCore.Qt.Key_Right, QtCore.Qt.Key_Down, QtCore.Qt.Key_Tab]:
855 if self._selectionIndex != len(self._filing) - 1:
856 nextSelection = self._selectionIndex + 1
859 self._select_at(nextSelection)
861 elif keyEvent.key() in [QtCore.Qt.Key_Left, QtCore.Qt.Key_Up, QtCore.Qt.Key_Backtab]:
862 if 0 < self._selectionIndex:
863 nextSelection = self._selectionIndex - 1
865 nextSelection = len(self._filing) - 1
866 self._select_at(nextSelection)
868 elif keyEvent.key() in [QtCore.Qt.Key_Return, QtCore.Qt.Key_Enter, QtCore.Qt.Key_Space]:
869 self._activate_at(self._selectionIndex)
870 elif keyEvent.key() in [QtCore.Qt.Key_Escape, QtCore.Qt.Key_Backspace]:
871 self._activate_at(PieFiling.SELECTION_NONE)
873 QtGui.QWidget.keyPressEvent(self, keyEvent)
875 @misc_utils.log_exception(_moduleLogger)
876 def showEvent(self, showEvent):
877 self.aboutToShow.emit()
878 self._cachedCenterPosition = self.rect().center()
880 mask = self._artist.show(self.palette())
883 lastMousePos = self.mapFromGlobal(QtGui.QCursor.pos())
884 self._update_selection(lastMousePos)
886 QtGui.QWidget.showEvent(self, showEvent)
888 @misc_utils.log_exception(_moduleLogger)
889 def hideEvent(self, hideEvent):
891 self._selectionIndex = PieFiling.SELECTION_NONE
892 QtGui.QWidget.hideEvent(self, hideEvent)
894 @misc_utils.log_exception(_moduleLogger)
895 def paintEvent(self, paintEvent):
896 canvas = self._artist.paint(self._selectionIndex)
898 screen = QtGui.QPainter(self)
899 screen.drawPixmap(QtCore.QPoint(0, 0), canvas)
901 QtGui.QWidget.paintEvent(self, paintEvent)
904 return iter(self._filing)
907 return len(self._filing)
909 def _select_at(self, index):
910 self._selectionIndex = index
912 def _update_selection(self, lastMousePos):
913 radius = _radius_at(self._cachedCenterPosition, lastMousePos)
914 if radius < self._filing.innerRadius():
915 self._selectionIndex = PieFiling.SELECTION_CENTER
916 elif radius <= self._filing.outerRadius():
917 self._select_at(self.indexAt(lastMousePos))
919 self._selectionIndex = PieFiling.SELECTION_NONE
921 def _activate_at(self, index):
922 if index == PieFiling.SELECTION_NONE:
924 self.aboutToHide.emit()
927 elif index == PieFiling.SELECTION_CENTER:
928 child = self._filing.center()
930 child = self.itemAt(index)
932 if child.isEnabled():
933 child.action().trigger()
934 self.activated.emit(index)
937 self.aboutToHide.emit()
942 PieFiling.NULL_CENTER.setEnabled(False)
949 def _on_about_to_hide(app):
953 if __name__ == "__main__":
954 app = QtGui.QApplication([])
962 singleAction = QtGui.QAction(None)
963 singleAction.setText("Boo")
964 singleItem = QActionPieItem(singleAction)
966 spie.insertItem(singleItem)
970 oneAction = QtGui.QAction(None)
971 oneAction.setText("Chew")
972 oneItem = QActionPieItem(oneAction)
973 twoAction = QtGui.QAction(None)
974 twoAction.setText("Foo")
975 twoItem = QActionPieItem(twoAction)
976 iconTextAction = QtGui.QAction(None)
977 iconTextAction.setText("Icon")
978 iconTextAction.setIcon(QtGui.QIcon.fromTheme("gtk-close"))
979 iconTextItem = QActionPieItem(iconTextAction)
981 mpie.insertItem(oneItem)
982 mpie.insertItem(twoItem)
983 mpie.insertItem(oneItem)
984 mpie.insertItem(iconTextItem)
988 oneAction = QtGui.QAction(None)
989 oneAction.setText("Chew")
990 oneAction.triggered.connect(lambda: _print("Chew"))
991 oneItem = QActionPieItem(oneAction)
992 twoAction = QtGui.QAction(None)
993 twoAction.setText("Foo")
994 twoAction.triggered.connect(lambda: _print("Foo"))
995 twoItem = QActionPieItem(twoAction)
996 iconAction = QtGui.QAction(None)
997 iconAction.setIcon(QtGui.QIcon.fromTheme("gtk-open"))
998 iconAction.triggered.connect(lambda: _print("Icon"))
999 iconItem = QActionPieItem(iconAction)
1000 iconTextAction = QtGui.QAction(None)
1001 iconTextAction.setText("Icon")
1002 iconTextAction.setIcon(QtGui.QIcon.fromTheme("gtk-close"))
1003 iconTextAction.triggered.connect(lambda: _print("Icon and text"))
1004 iconTextItem = QActionPieItem(iconTextAction)
1006 mpie.set_center(iconItem)
1007 mpie.insertItem(oneItem)
1008 mpie.insertItem(twoItem)
1009 mpie.insertItem(oneItem)
1010 mpie.insertItem(iconTextItem)
1012 mpie.aboutToHide.connect(lambda: _on_about_to_hide(app))
1013 mpie.canceled.connect(lambda: _print("Canceled"))
1016 oneAction = QtGui.QAction(None)
1017 oneAction.setText("Chew")
1018 oneAction.triggered.connect(lambda: _print("Chew"))
1019 oneItem = QActionPieItem(oneAction)
1020 twoAction = QtGui.QAction(None)
1021 twoAction.setText("Foo")
1022 twoAction.triggered.connect(lambda: _print("Foo"))
1023 twoItem = QActionPieItem(twoAction)
1024 iconAction = QtGui.QAction(None)
1025 iconAction.setIcon(QtGui.QIcon.fromTheme("gtk-open"))
1026 iconAction.triggered.connect(lambda: _print("Icon"))
1027 iconItem = QActionPieItem(iconAction)
1028 iconTextAction = QtGui.QAction(None)
1029 iconTextAction.setText("Icon")
1030 iconTextAction.setIcon(QtGui.QIcon.fromTheme("gtk-close"))
1031 iconTextAction.triggered.connect(lambda: _print("Icon and text"))
1032 iconTextItem = QActionPieItem(iconTextAction)
1033 pieFiling = PieFiling()
1034 pieFiling.set_center(iconItem)
1035 pieFiling.insertItem(oneItem)
1036 pieFiling.insertItem(twoItem)
1037 pieFiling.insertItem(oneItem)
1038 pieFiling.insertItem(iconTextItem)
1039 mpie = QPieDisplay(pieFiling)
1043 oneAction = QtGui.QAction(None)
1044 oneAction.setText("Chew")
1045 oneAction.triggered.connect(lambda: _print("Chew"))
1046 oneItem = QActionPieItem(oneAction)
1047 twoAction = QtGui.QAction(None)
1048 twoAction.setText("Foo")
1049 twoAction.triggered.connect(lambda: _print("Foo"))
1050 twoItem = QActionPieItem(twoAction)
1051 iconAction = QtGui.QAction(None)
1052 iconAction.setIcon(QtGui.QIcon.fromTheme("gtk-open"))
1053 iconAction.triggered.connect(lambda: _print("Icon"))
1054 iconItem = QActionPieItem(iconAction)
1055 iconTextAction = QtGui.QAction(None)
1056 iconTextAction.setText("Icon")
1057 iconTextAction.setIcon(QtGui.QIcon.fromTheme("gtk-close"))
1058 iconTextAction.triggered.connect(lambda: _print("Icon and text"))
1059 iconTextItem = QActionPieItem(iconTextAction)
1060 mpie = QPieButton(iconItem)
1061 mpie.set_center(iconItem)
1062 mpie.insertItem(oneItem)
1063 mpie.insertItem(twoItem)
1064 mpie.insertItem(oneItem)
1065 mpie.insertItem(iconTextItem)
1067 mpie.aboutToHide.connect(lambda: _on_about_to_hide(app))
1068 mpie.canceled.connect(lambda: _print("Canceled"))