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)
531 QtGui.QSizePolicy.MinimumExpanding,
532 QtGui.QSizePolicy.MinimumExpanding,
536 def insertItem(self, item, index = -1):
537 self._filing.insertItem(item, index)
539 def removeItemAt(self, index):
540 self._filing.removeItemAt(index)
542 def set_center(self, item):
543 self._filing.set_center(item)
545 def set_button(self, item):
551 def itemAt(self, index):
552 return self._filing.itemAt(index)
554 def indexAt(self, point):
555 return self._filing.indexAt(self._cachedCenterPosition, point)
557 def innerRadius(self):
558 return self._filing.innerRadius()
560 def setInnerRadius(self, radius):
561 self._filing.setInnerRadius(radius)
563 def outerRadius(self):
564 return self._filing.outerRadius()
566 def setOuterRadius(self, radius):
567 self._filing.setOuterRadius(radius)
569 def buttonRadius(self):
570 return self._buttonFiling.outerRadius()
572 def setButtonRadius(self, radius):
573 self._buttonFiling.setOuterRadius(radius)
574 self._buttonArtist.show(self.palette())
577 return self._buttonArtist.pieSize()
579 def minimumSizeHint(self):
580 return self._buttonArtist.centerSize()
582 @misc_utils.log_exception(_moduleLogger)
583 def mousePressEvent(self, mouseEvent):
584 lastSelection = self._selectionIndex
586 lastMousePos = mouseEvent.pos()
587 self._mousePosition = lastMousePos
588 self._update_selection(self._cachedCenterPosition)
590 self.highlighted.emit(self._selectionIndex)
592 self._display.selectAt(self._selectionIndex)
593 self._popupLocation = mouseEvent.globalPos()
594 self._delayPopupTimer.start()
597 @misc_utils.log_exception(_moduleLogger)
598 def _on_delayed_popup(self):
599 assert self._popupLocation is not None
600 self._popup_child(self._popupLocation)
602 @misc_utils.log_exception(_moduleLogger)
603 def mouseMoveEvent(self, mouseEvent):
604 lastSelection = self._selectionIndex
606 lastMousePos = mouseEvent.pos()
607 if self._mousePosition is None:
609 self._update_selection(lastMousePos)
612 self._update_selection(
613 self._cachedCenterPosition + (lastMousePos - self._mousePosition),
617 if lastSelection != self._selectionIndex:
618 self.highlighted.emit(self._selectionIndex)
619 self._display.selectAt(self._selectionIndex)
621 if self._selectionIndex != PieFiling.SELECTION_CENTER and self._delayPopupTimer.isActive():
622 self._on_delayed_popup()
624 @misc_utils.log_exception(_moduleLogger)
625 def mouseReleaseEvent(self, mouseEvent):
626 self._delayPopupTimer.stop()
627 self._popupLocation = None
629 lastSelection = self._selectionIndex
631 lastMousePos = mouseEvent.pos()
632 if self._mousePosition is None:
634 self._update_selection(lastMousePos)
637 self._update_selection(
638 self._cachedCenterPosition + (lastMousePos - self._mousePosition),
641 self._mousePosition = None
643 self._activate_at(self._selectionIndex)
646 @misc_utils.log_exception(_moduleLogger)
647 def keyPressEvent(self, keyEvent):
648 if keyEvent.key() in [QtCore.Qt.Key_Right, QtCore.Qt.Key_Down, QtCore.Qt.Key_Tab]:
649 self._popup_child(QtGui.QCursor.pos())
650 if self._selectionIndex != len(self._filing) - 1:
651 nextSelection = self._selectionIndex + 1
654 self._select_at(nextSelection)
655 self._display.selectAt(self._selectionIndex)
656 elif keyEvent.key() in [QtCore.Qt.Key_Left, QtCore.Qt.Key_Up, QtCore.Qt.Key_Backtab]:
657 self._popup_child(QtGui.QCursor.pos())
658 if 0 < self._selectionIndex:
659 nextSelection = self._selectionIndex - 1
661 nextSelection = len(self._filing) - 1
662 self._select_at(nextSelection)
663 self._display.selectAt(self._selectionIndex)
664 elif keyEvent.key() in [QtCore.Qt.Key_Space]:
665 self._popup_child(QtGui.QCursor.pos())
666 self._select_at(PieFiling.SELECTION_CENTER)
667 self._display.selectAt(self._selectionIndex)
668 elif keyEvent.key() in [QtCore.Qt.Key_Return, QtCore.Qt.Key_Enter, QtCore.Qt.Key_Space]:
669 self._delayPopupTimer.stop()
670 self._popupLocation = None
671 self._activate_at(self._selectionIndex)
673 elif keyEvent.key() in [QtCore.Qt.Key_Escape, QtCore.Qt.Key_Backspace]:
674 self._delayPopupTimer.stop()
675 self._popupLocation = None
676 self._activate_at(PieFiling.SELECTION_NONE)
679 QtGui.QWidget.keyPressEvent(self, keyEvent)
681 @misc_utils.log_exception(_moduleLogger)
682 def resizeEvent(self, resizeEvent):
683 self.setButtonRadius(min(resizeEvent.size().width(), resizeEvent.size().height()) / 2 - 1)
684 QtGui.QWidget.resizeEvent(self, resizeEvent)
686 @misc_utils.log_exception(_moduleLogger)
687 def showEvent(self, showEvent):
688 self._buttonArtist.show(self.palette())
689 self._cachedCenterPosition = self.rect().center()
691 QtGui.QWidget.showEvent(self, showEvent)
693 @misc_utils.log_exception(_moduleLogger)
694 def hideEvent(self, hideEvent):
696 self._select_at(PieFiling.SELECTION_NONE)
697 QtGui.QWidget.hideEvent(self, hideEvent)
699 @misc_utils.log_exception(_moduleLogger)
700 def paintEvent(self, paintEvent):
701 self.setButtonRadius(min(self.rect().width(), self.rect().height()) / 2 - 1)
703 canvas = self._buttonArtist.paint(PieFiling.SELECTION_CENTER)
705 canvas = self._buttonArtist.paint(PieFiling.SELECTION_NONE)
707 screen = QtGui.QPainter(self)
708 screen.drawPixmap(QtCore.QPoint(0, 0), canvas)
710 QtGui.QWidget.paintEvent(self, paintEvent)
713 return iter(self._filing)
716 return len(self._filing)
718 def _popup_child(self, position):
719 self._poppedUp = True
720 self.aboutToShow.emit()
722 self._delayPopupTimer.stop()
723 self._popupLocation = None
725 position = position - QtCore.QPoint(self._filing.outerRadius(), self._filing.outerRadius())
726 self._display.move(position)
731 def _hide_child(self):
732 self._poppedUp = False
733 self.aboutToHide.emit()
737 def _select_at(self, index):
738 self._selectionIndex = index
740 def _update_selection(self, lastMousePos, ignoreOuter = False):
741 radius = _radius_at(self._cachedCenterPosition, lastMousePos)
742 if radius < self._filing.innerRadius():
743 self._select_at(PieFiling.SELECTION_CENTER)
744 elif radius <= self._filing.outerRadius() or ignoreOuter:
745 self._select_at(self.indexAt(lastMousePos))
747 self._select_at(PieFiling.SELECTION_NONE)
749 def _activate_at(self, index):
750 if index == PieFiling.SELECTION_NONE:
753 elif index == PieFiling.SELECTION_CENTER:
754 child = self._filing.center()
756 child = self.itemAt(index)
758 if child.action().isEnabled():
759 child.action().trigger()
760 self.activated.emit(index)
765 class QPieMenu(QtGui.QWidget):
767 activated = QtCore.pyqtSignal(int)
768 highlighted = QtCore.pyqtSignal(int)
769 canceled = QtCore.pyqtSignal()
770 aboutToShow = QtCore.pyqtSignal()
771 aboutToHide = QtCore.pyqtSignal()
773 def __init__(self, parent = None):
774 QtGui.QWidget.__init__(self, parent)
775 self._cachedCenterPosition = self.rect().center()
777 self._filing = PieFiling()
778 self._artist = PieArtist(self._filing)
779 self._selectionIndex = PieFiling.SELECTION_NONE
781 self._mousePosition = ()
782 self.setFocusPolicy(QtCore.Qt.StrongFocus)
784 def popup(self, pos):
785 self._update_selection(pos)
788 def insertItem(self, item, index = -1):
789 self._filing.insertItem(item, index)
792 def removeItemAt(self, index):
793 self._filing.removeItemAt(index)
796 def set_center(self, item):
797 self._filing.set_center(item)
804 def itemAt(self, index):
805 return self._filing.itemAt(index)
807 def indexAt(self, point):
808 return self._filing.indexAt(self._cachedCenterPosition, point)
810 def innerRadius(self):
811 return self._filing.innerRadius()
813 def setInnerRadius(self, radius):
814 self._filing.setInnerRadius(radius)
817 def outerRadius(self):
818 return self._filing.outerRadius()
820 def setOuterRadius(self, radius):
821 self._filing.setOuterRadius(radius)
825 return self._artist.pieSize()
827 @misc_utils.log_exception(_moduleLogger)
828 def mousePressEvent(self, mouseEvent):
829 lastSelection = self._selectionIndex
831 lastMousePos = mouseEvent.pos()
832 self._update_selection(lastMousePos)
833 self._mousePosition = lastMousePos
835 if lastSelection != self._selectionIndex:
836 self.highlighted.emit(self._selectionIndex)
839 @misc_utils.log_exception(_moduleLogger)
840 def mouseMoveEvent(self, mouseEvent):
841 lastSelection = self._selectionIndex
843 lastMousePos = mouseEvent.pos()
844 self._update_selection(lastMousePos)
846 if lastSelection != self._selectionIndex:
847 self.highlighted.emit(self._selectionIndex)
850 @misc_utils.log_exception(_moduleLogger)
851 def mouseReleaseEvent(self, mouseEvent):
852 lastSelection = self._selectionIndex
854 lastMousePos = mouseEvent.pos()
855 self._update_selection(lastMousePos)
856 self._mousePosition = ()
858 self._activate_at(self._selectionIndex)
861 @misc_utils.log_exception(_moduleLogger)
862 def keyPressEvent(self, keyEvent):
863 if keyEvent.key() in [QtCore.Qt.Key_Right, QtCore.Qt.Key_Down, QtCore.Qt.Key_Tab]:
864 if self._selectionIndex != len(self._filing) - 1:
865 nextSelection = self._selectionIndex + 1
868 self._select_at(nextSelection)
870 elif keyEvent.key() in [QtCore.Qt.Key_Left, QtCore.Qt.Key_Up, QtCore.Qt.Key_Backtab]:
871 if 0 < self._selectionIndex:
872 nextSelection = self._selectionIndex - 1
874 nextSelection = len(self._filing) - 1
875 self._select_at(nextSelection)
877 elif keyEvent.key() in [QtCore.Qt.Key_Return, QtCore.Qt.Key_Enter, QtCore.Qt.Key_Space]:
878 self._activate_at(self._selectionIndex)
879 elif keyEvent.key() in [QtCore.Qt.Key_Escape, QtCore.Qt.Key_Backspace]:
880 self._activate_at(PieFiling.SELECTION_NONE)
882 QtGui.QWidget.keyPressEvent(self, keyEvent)
884 @misc_utils.log_exception(_moduleLogger)
885 def showEvent(self, showEvent):
886 self.aboutToShow.emit()
887 self._cachedCenterPosition = self.rect().center()
889 mask = self._artist.show(self.palette())
892 lastMousePos = self.mapFromGlobal(QtGui.QCursor.pos())
893 self._update_selection(lastMousePos)
895 QtGui.QWidget.showEvent(self, showEvent)
897 @misc_utils.log_exception(_moduleLogger)
898 def hideEvent(self, hideEvent):
900 self._selectionIndex = PieFiling.SELECTION_NONE
901 QtGui.QWidget.hideEvent(self, hideEvent)
903 @misc_utils.log_exception(_moduleLogger)
904 def paintEvent(self, paintEvent):
905 canvas = self._artist.paint(self._selectionIndex)
907 screen = QtGui.QPainter(self)
908 screen.drawPixmap(QtCore.QPoint(0, 0), canvas)
910 QtGui.QWidget.paintEvent(self, paintEvent)
913 return iter(self._filing)
916 return len(self._filing)
918 def _select_at(self, index):
919 self._selectionIndex = index
921 def _update_selection(self, lastMousePos):
922 radius = _radius_at(self._cachedCenterPosition, lastMousePos)
923 if radius < self._filing.innerRadius():
924 self._selectionIndex = PieFiling.SELECTION_CENTER
925 elif radius <= self._filing.outerRadius():
926 self._select_at(self.indexAt(lastMousePos))
928 self._selectionIndex = PieFiling.SELECTION_NONE
930 def _activate_at(self, index):
931 if index == PieFiling.SELECTION_NONE:
933 self.aboutToHide.emit()
936 elif index == PieFiling.SELECTION_CENTER:
937 child = self._filing.center()
939 child = self.itemAt(index)
941 if child.isEnabled():
942 child.action().trigger()
943 self.activated.emit(index)
946 self.aboutToHide.emit()
951 PieFiling.NULL_CENTER.setEnabled(False)
958 def _on_about_to_hide(app):
962 if __name__ == "__main__":
963 app = QtGui.QApplication([])
971 singleAction = QtGui.QAction(None)
972 singleAction.setText("Boo")
973 singleItem = QActionPieItem(singleAction)
975 spie.insertItem(singleItem)
979 oneAction = QtGui.QAction(None)
980 oneAction.setText("Chew")
981 oneItem = QActionPieItem(oneAction)
982 twoAction = QtGui.QAction(None)
983 twoAction.setText("Foo")
984 twoItem = QActionPieItem(twoAction)
985 iconTextAction = QtGui.QAction(None)
986 iconTextAction.setText("Icon")
987 iconTextAction.setIcon(QtGui.QIcon.fromTheme("gtk-close"))
988 iconTextItem = QActionPieItem(iconTextAction)
990 mpie.insertItem(oneItem)
991 mpie.insertItem(twoItem)
992 mpie.insertItem(oneItem)
993 mpie.insertItem(iconTextItem)
997 oneAction = QtGui.QAction(None)
998 oneAction.setText("Chew")
999 oneAction.triggered.connect(lambda: _print("Chew"))
1000 oneItem = QActionPieItem(oneAction)
1001 twoAction = QtGui.QAction(None)
1002 twoAction.setText("Foo")
1003 twoAction.triggered.connect(lambda: _print("Foo"))
1004 twoItem = QActionPieItem(twoAction)
1005 iconAction = QtGui.QAction(None)
1006 iconAction.setIcon(QtGui.QIcon.fromTheme("gtk-open"))
1007 iconAction.triggered.connect(lambda: _print("Icon"))
1008 iconItem = QActionPieItem(iconAction)
1009 iconTextAction = QtGui.QAction(None)
1010 iconTextAction.setText("Icon")
1011 iconTextAction.setIcon(QtGui.QIcon.fromTheme("gtk-close"))
1012 iconTextAction.triggered.connect(lambda: _print("Icon and text"))
1013 iconTextItem = QActionPieItem(iconTextAction)
1015 mpie.set_center(iconItem)
1016 mpie.insertItem(oneItem)
1017 mpie.insertItem(twoItem)
1018 mpie.insertItem(oneItem)
1019 mpie.insertItem(iconTextItem)
1021 mpie.aboutToHide.connect(lambda: _on_about_to_hide(app))
1022 mpie.canceled.connect(lambda: _print("Canceled"))
1025 oneAction = QtGui.QAction(None)
1026 oneAction.setText("Chew")
1027 oneAction.triggered.connect(lambda: _print("Chew"))
1028 oneItem = QActionPieItem(oneAction)
1029 twoAction = QtGui.QAction(None)
1030 twoAction.setText("Foo")
1031 twoAction.triggered.connect(lambda: _print("Foo"))
1032 twoItem = QActionPieItem(twoAction)
1033 iconAction = QtGui.QAction(None)
1034 iconAction.setIcon(QtGui.QIcon.fromTheme("gtk-open"))
1035 iconAction.triggered.connect(lambda: _print("Icon"))
1036 iconItem = QActionPieItem(iconAction)
1037 iconTextAction = QtGui.QAction(None)
1038 iconTextAction.setText("Icon")
1039 iconTextAction.setIcon(QtGui.QIcon.fromTheme("gtk-close"))
1040 iconTextAction.triggered.connect(lambda: _print("Icon and text"))
1041 iconTextItem = QActionPieItem(iconTextAction)
1042 pieFiling = PieFiling()
1043 pieFiling.set_center(iconItem)
1044 pieFiling.insertItem(oneItem)
1045 pieFiling.insertItem(twoItem)
1046 pieFiling.insertItem(oneItem)
1047 pieFiling.insertItem(iconTextItem)
1048 mpie = QPieDisplay(pieFiling)
1052 oneAction = QtGui.QAction(None)
1053 oneAction.setText("Chew")
1054 oneAction.triggered.connect(lambda: _print("Chew"))
1055 oneItem = QActionPieItem(oneAction)
1056 twoAction = QtGui.QAction(None)
1057 twoAction.setText("Foo")
1058 twoAction.triggered.connect(lambda: _print("Foo"))
1059 twoItem = QActionPieItem(twoAction)
1060 iconAction = QtGui.QAction(None)
1061 iconAction.setIcon(QtGui.QIcon.fromTheme("gtk-open"))
1062 iconAction.triggered.connect(lambda: _print("Icon"))
1063 iconItem = QActionPieItem(iconAction)
1064 iconTextAction = QtGui.QAction(None)
1065 iconTextAction.setText("Icon")
1066 iconTextAction.setIcon(QtGui.QIcon.fromTheme("gtk-close"))
1067 iconTextAction.triggered.connect(lambda: _print("Icon and text"))
1068 iconTextItem = QActionPieItem(iconTextAction)
1069 mpie = QPieButton(iconItem)
1070 mpie.set_center(iconItem)
1071 mpie.insertItem(oneItem)
1072 mpie.insertItem(twoItem)
1073 mpie.insertItem(oneItem)
1074 mpie.insertItem(iconTextItem)
1076 mpie.aboutToHide.connect(lambda: _on_about_to_hide(app))
1077 mpie.canceled.connect(lambda: _print("Canceled"))