#!/usr/bin/env python
#############################################################################
##
## Copyright (C) 2013 Riverbank Computing Limited.
## Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
## All rights reserved.
##
## This file is part of the examples of PyQt.
##
## $QT_BEGIN_LICENSE:BSD$
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## modification, are permitted provided that the following conditions are
## met:
## * Redistributions of source code must retain the above copyright
## notice, this list of conditions and the following disclaimer.
## * Redistributions in binary form must reproduce the above copyright
## notice, this list of conditions and the following disclaimer in
## the documentation and/or other materials provided with the
## distribution.
## * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
## the names of its contributors may be used to endorse or promote
## products derived from this software without specific prior written
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## $QT_END_LICENSE$
##
#############################################################################
import math
from PyQt5.QtCore import (pyqtProperty, QDirIterator, QEasingCurve, QEvent,
QEventTransition, QHistoryState, QParallelAnimationGroup, QPointF,
QPropertyAnimation, QRectF, QSequentialAnimationGroup, QSize, QState,
QStateMachine, Qt)
from PyQt5.QtGui import (QBrush, QColor, QFont, QLinearGradient, QPainter,
QPalette, QPen, QPixmap, QTransform)
from PyQt5.QtWidgets import (QApplication, QGraphicsItem, QGraphicsObject,
QGraphicsProxyWidget, QGraphicsRotation, QGraphicsScene, QGraphicsView,
QKeyEventTransition, QWidget)
from PyQt5.QtOpenGL import QGL, QGLFormat, QGLWidget
import padnavigator_rc
from ui_form import Ui_Form
class PadNavigator(QGraphicsView):
def __init__(self, size, parent=None):
super(PadNavigator, self).__init__(parent)
self.form = Ui_Form()
splash = SplashItem()
splash.setZValue(1)
pad = FlippablePad(size)
flipRotation = QGraphicsRotation(pad)
xRotation = QGraphicsRotation(pad)
yRotation = QGraphicsRotation(pad)
flipRotation.setAxis(Qt.YAxis)
xRotation.setAxis(Qt.YAxis)
yRotation.setAxis(Qt.XAxis)
pad.setTransformations([flipRotation, xRotation, yRotation])
backItem = QGraphicsProxyWidget(pad)
widget = QWidget()
self.form.setupUi(widget)
self.form.hostName.setFocus()
backItem.setWidget(widget)
backItem.setVisible(False)
backItem.setFocus()
backItem.setCacheMode(QGraphicsItem.ItemCoordinateCache)
r = backItem.rect()
backItem.setTransform(QTransform().rotate(180, Qt.YAxis).translate(-r.width()/2, -r.height()/2))
selectionItem = RoundRectItem(QRectF(-60, -60, 120, 120),
QColor(Qt.gray), pad)
selectionItem.setZValue(0.5)
smoothSplashMove = QPropertyAnimation(splash, "y")
smoothSplashOpacity = QPropertyAnimation(splash, "opacity")
smoothSplashMove.setEasingCurve(QEasingCurve.InQuad)
smoothSplashMove.setDuration(250)
smoothSplashOpacity.setDuration(250)
smoothXSelection = QPropertyAnimation(selectionItem, "x")
smoothYSelection = QPropertyAnimation(selectionItem, "y")
smoothXRotation = QPropertyAnimation(xRotation, "angle")
smoothYRotation = QPropertyAnimation(yRotation, "angle")
smoothXSelection.setDuration(125)
smoothYSelection.setDuration(125)
smoothXRotation.setDuration(125)
smoothYRotation.setDuration(125)
smoothXSelection.setEasingCurve(QEasingCurve.InOutQuad)
smoothYSelection.setEasingCurve(QEasingCurve.InOutQuad)
smoothXRotation.setEasingCurve(QEasingCurve.InOutQuad)
smoothYRotation.setEasingCurve(QEasingCurve.InOutQuad)
smoothFlipRotation = QPropertyAnimation(flipRotation, "angle")
smoothFlipScale = QPropertyAnimation(pad, "scale")
smoothFlipXRotation = QPropertyAnimation(xRotation, "angle")
smoothFlipYRotation = QPropertyAnimation(yRotation, "angle")
flipAnimation = QParallelAnimationGroup(self)
smoothFlipScale.setDuration(500)
smoothFlipRotation.setDuration(500)
smoothFlipXRotation.setDuration(500)
smoothFlipYRotation.setDuration(500)
smoothFlipScale.setEasingCurve(QEasingCurve.InOutQuad)
smoothFlipRotation.setEasingCurve(QEasingCurve.InOutQuad)
smoothFlipXRotation.setEasingCurve(QEasingCurve.InOutQuad)
smoothFlipYRotation.setEasingCurve(QEasingCurve.InOutQuad)
smoothFlipScale.setKeyValueAt(0, 1.0)
smoothFlipScale.setKeyValueAt(0.5, 0.7)
smoothFlipScale.setKeyValueAt(1, 1.0)
flipAnimation.addAnimation(smoothFlipRotation)
flipAnimation.addAnimation(smoothFlipScale)
flipAnimation.addAnimation(smoothFlipXRotation)
flipAnimation.addAnimation(smoothFlipYRotation)
setVariablesSequence = QSequentialAnimationGroup()
setFillAnimation = QPropertyAnimation(pad, "fill")
setBackItemVisibleAnimation = QPropertyAnimation(backItem, "visible")
setSelectionItemVisibleAnimation = QPropertyAnimation(selectionItem, "visible")
setFillAnimation.setDuration(0)
setBackItemVisibleAnimation.setDuration(0)
setSelectionItemVisibleAnimation.setDuration(0)
setVariablesSequence.addPause(250)
setVariablesSequence.addAnimation(setBackItemVisibleAnimation)
setVariablesSequence.addAnimation(setSelectionItemVisibleAnimation)
setVariablesSequence.addAnimation(setFillAnimation)
flipAnimation.addAnimation(setVariablesSequence)
stateMachine = QStateMachine(self)
splashState = QState(stateMachine)
frontState = QState(stateMachine)
historyState = QHistoryState(frontState)
backState = QState(stateMachine)
frontState.assignProperty(pad, "fill", False)
frontState.assignProperty(splash, "opacity", 0.0)
frontState.assignProperty(backItem, "visible", False)
frontState.assignProperty(flipRotation, "angle", 0.0)
frontState.assignProperty(selectionItem, "visible", True)
backState.assignProperty(pad, "fill", True)
backState.assignProperty(backItem, "visible", True)
backState.assignProperty(xRotation, "angle", 0.0)
backState.assignProperty(yRotation, "angle", 0.0)
backState.assignProperty(flipRotation, "angle", 180.0)
backState.assignProperty(selectionItem, "visible", False)
stateMachine.addDefaultAnimation(smoothXRotation)
stateMachine.addDefaultAnimation(smoothYRotation)
stateMachine.addDefaultAnimation(smoothXSelection)
stateMachine.addDefaultAnimation(smoothYSelection)
stateMachine.setInitialState(splashState)
anyKeyTransition = QEventTransition(self, QEvent.KeyPress, splashState)
anyKeyTransition.setTargetState(frontState)
anyKeyTransition.addAnimation(smoothSplashMove)
anyKeyTransition.addAnimation(smoothSplashOpacity)
enterTransition = QKeyEventTransition(self, QEvent.KeyPress,
Qt.Key_Enter, backState)
returnTransition = QKeyEventTransition(self, QEvent.KeyPress,
Qt.Key_Return, backState)
backEnterTransition = QKeyEventTransition(self, QEvent.KeyPress,
Qt.Key_Enter, frontState)
backReturnTransition = QKeyEventTransition(self, QEvent.KeyPress,
Qt.Key_Return, frontState)
enterTransition.setTargetState(historyState)
returnTransition.setTargetState(historyState)
backEnterTransition.setTargetState(backState)
backReturnTransition.setTargetState(backState)
enterTransition.addAnimation(flipAnimation)
returnTransition.addAnimation(flipAnimation)
backEnterTransition.addAnimation(flipAnimation)
backReturnTransition.addAnimation(flipAnimation)
columns = size.width()
rows = size.height()
stateGrid = []
for y in range(rows):
stateGrid.append([QState(frontState) for _ in range(columns)])
frontState.setInitialState(stateGrid[0][0])
selectionItem.setPos(pad.iconAt(0, 0).pos())
for y in range(rows):
for x in range(columns):
state = stateGrid[y][x]
rightTransition = QKeyEventTransition(self, QEvent.KeyPress,
Qt.Key_Right, state)
leftTransition = QKeyEventTransition(self, QEvent.KeyPress,
Qt.Key_Left, state)
downTransition = QKeyEventTransition(self, QEvent.KeyPress,
Qt.Key_Down, state)
upTransition = QKeyEventTransition(self, QEvent.KeyPress,
Qt.Key_Up, state)
rightTransition.setTargetState(stateGrid[y][(x + 1) % columns])
leftTransition.setTargetState(stateGrid[y][((x - 1) + columns) % columns])
downTransition.setTargetState(stateGrid[(y + 1) % rows][x])
upTransition.setTargetState(stateGrid[((y - 1) + rows) % rows][x])
icon = pad.iconAt(x, y)
state.assignProperty(xRotation, "angle", -icon.x() / 6.0)
state.assignProperty(yRotation, "angle", icon.y() / 6.0)
state.assignProperty(selectionItem, "x", icon.x())
state.assignProperty(selectionItem, "y", icon.y())
frontState.assignProperty(icon, "visible", True)
backState.assignProperty(icon, "visible", False)
setIconVisibleAnimation = QPropertyAnimation(icon, "visible")
setIconVisibleAnimation.setDuration(0)
setVariablesSequence.addAnimation(setIconVisibleAnimation)
scene = QGraphicsScene(self)
scene.setBackgroundBrush(QBrush(QPixmap(":/images/blue_angle_swirl.jpg")))
scene.setItemIndexMethod(QGraphicsScene.NoIndex)
scene.addItem(pad)
scene.setSceneRect(scene.itemsBoundingRect())
self.setScene(scene)
sbr = splash.boundingRect()
splash.setPos(-sbr.width() / 2, scene.sceneRect().top() - 2)
frontState.assignProperty(splash, "y", splash.y() - 100.0)
scene.addItem(splash)
self.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self.setMinimumSize(50, 50)
self.setViewportUpdateMode(QGraphicsView.FullViewportUpdate)
self.setCacheMode(QGraphicsView.CacheBackground)
self.setRenderHints(QPainter.Antialiasing |
QPainter.SmoothPixmapTransform | QPainter.TextAntialiasing)
if QGLFormat.hasOpenGL():
self.setViewport(QGLWidget(QGLFormat(QGL.SampleBuffers)))
stateMachine.start()
def resizeEvent(self, event):
super(PadNavigator, self).resizeEvent(event)
self.fitInView(self.scene().sceneRect(), Qt.KeepAspectRatio)
class RoundRectItem(QGraphicsObject):
def __init__(self, bounds, color, parent=None):
super(RoundRectItem, self).__init__(parent)
self.fillRect = False
self.bounds = QRectF(bounds)
self.pix = QPixmap()
self.gradient = QLinearGradient()
self.gradient.setStart(self.bounds.topLeft())
self.gradient.setFinalStop(self.bounds.bottomRight())
self.gradient.setColorAt(0, color)
self.gradient.setColorAt(1, color.darker(200))
self.setCacheMode(QGraphicsItem.ItemCoordinateCache)
def setFill(self, fill):
self.fillRect = fill
self.update()
def fill(self):
return self.fillRect
fill = pyqtProperty(bool, fill, setFill)
def paint(self, painter, option, widget):
painter.setPen(Qt.NoPen)
painter.setBrush(QColor(0, 0, 0, 64))
painter.drawRoundedRect(self.bounds.translated(2, 2), 25.0, 25.0)
if self.fillRect:
painter.setBrush(QApplication.palette().brush(QPalette.Window))
else:
painter.setBrush(self.gradient)
painter.setPen(QPen(Qt.black, 1))
painter.drawRoundedRect(self.bounds, 25.0, 25.0)
if not self.pix.isNull():
painter.scale(1.95, 1.95)
painter.drawPixmap(-self.pix.width() / 2, -self.pix.height() / 2, self.pix)
def boundingRect(self):
return self.bounds.adjusted(0, 0, 2, 2)
def pixmap(self):
return QPixmap(self.pix)
def setPixmap(self, pixmap):
self.pix = QPixmap(pixmap)
self.update()
class FlippablePad(RoundRectItem):
def __init__(self, size, parent=None):
super(FlippablePad, self).__init__(self.boundsFromSize(size),
QColor(226, 255, 92, 64), parent)
numIcons = size.width() * size.height()
pixmaps = []
it = QDirIterator(":/images", ["*.png"])
while it.hasNext() and len(pixmaps) < numIcons:
pixmaps.append(it.next())
iconRect = QRectF(-54, -54, 108, 108)
iconColor = QColor(214, 240, 110, 128)
self.iconGrid = []
n = 0
for y in range(size.height()):
row = []
for x in range(size.width()):
rect = RoundRectItem(iconRect, iconColor, self)
rect.setZValue(1)
rect.setPos(self.posForLocation(x, y, size))
rect.setPixmap(pixmaps[n % len(pixmaps)])
n += 1
row.append(rect)
self.iconGrid.append(row)
def iconAt(self, column, row):
return self.iconGrid[row][column]
@staticmethod
def boundsFromSize(size):
return QRectF((-size.width() / 2.0) * 150,
(-size.height() / 2.0) * 150, size.width() * 150,
size.height() * 150)
@staticmethod
def posForLocation(column, row, size):
return QPointF(column * 150, row * 150) - QPointF((size.width() - 1) * 75, (size.height() - 1) * 75)
class SplashItem(QGraphicsObject):
def __init__(self, parent=None):
super(SplashItem, self).__init__(parent)
self.text = "Welcome to the Pad Navigator Example. You can use the " \
"keyboard arrows to navigate the icons, and press enter to " \
"activate an item. Press any key to begin."
self.setCacheMode(QGraphicsItem.DeviceCoordinateCache)
def boundingRect(self):
return QRectF(0, 0, 400, 175)
def paint(self, painter, option, widget):
painter.setPen(QPen(Qt.black, 2))
painter.setBrush(QColor(245, 245, 255, 220))
painter.setClipRect(self.boundingRect())
painter.drawRoundedRect(3, -100 + 3, 400 - 6, 250 - 6, 25.0, 25.0)
textRect = self.boundingRect().adjusted(10, 10, -10, -10)
flags = int(Qt.AlignTop | Qt.AlignLeft) | Qt.TextWordWrap
font = QFont()
font.setPixelSize(18)
painter.setPen(Qt.black)
painter.setFont(font)
painter.drawText(textRect, flags, self.text)
if __name__ == '__main__':
import sys
app = QApplication(sys.argv)
navigator = PadNavigator(QSize(3, 3))
navigator.show()
sys.exit(app.exec_())
