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#!/usr/bin/env python
from PyQt4 import QtCore, QtGui
import animatedtiles_rc
# PyQt doesn't support deriving from more than one wrapped class so we use
# composition and delegate the property.
class Pixmap(QtCore.QObject):
def __init__(self, pix):
super(Pixmap, self).__init__()
self.pixmap_item = QtGui.QGraphicsPixmapItem(pix)
self.pixmap_item.setCacheMode(QtGui.QGraphicsItem.DeviceCoordinateCache)
def _set_pos(self, pos):
self.pixmap_item.setPos(pos)
pos = QtCore.pyqtProperty(QtCore.QPointF, fset=_set_pos)
class Button(QtGui.QGraphicsWidget):
pressed = QtCore.pyqtSignal()
def __init__(self, pixmap, parent=None):
super(Button, self).__init__(parent)
self._pix = pixmap
self.setAcceptHoverEvents(True)
self.setCacheMode(QtGui.QGraphicsItem.DeviceCoordinateCache)
def boundingRect(self):
return QtCore.QRectF(-65, -65, 130, 130)
def shape(self):
path = QtGui.QPainterPath()
path.addEllipse(self.boundingRect())
return path
def paint(self, painter, option, widget):
down = option.state & QtGui.QStyle.State_Sunken
r = self.boundingRect()
grad = QtGui.QLinearGradient(r.topLeft(), r.bottomRight())
if option.state & QtGui.QStyle.State_MouseOver:
color_0 = QtCore.Qt.white
else:
color_0 = QtCore.Qt.lightGray
color_1 = QtCore.Qt.darkGray
if down:
color_0, color_1 = color_1, color_0
grad.setColorAt(0, color_0)
grad.setColorAt(1, color_1)
painter.setPen(QtCore.Qt.darkGray)
painter.setBrush(grad)
painter.drawEllipse(r)
color_0 = QtCore.Qt.darkGray
color_1 = QtCore.Qt.lightGray
if down:
color_0, color_1 = color_1, color_0
grad.setColorAt(0, color_0)
grad.setColorAt(1, color_1)
painter.setPen(QtCore.Qt.NoPen)
painter.setBrush(grad)
if down:
painter.translate(2, 2)
painter.drawEllipse(r.adjusted(5, 5, -5, -5))
painter.drawPixmap(-self._pix.width() / 2, -self._pix.height() / 2,
self._pix)
def mousePressEvent(self, ev):
self.pressed.emit()
self.update()
def mouseReleaseEvent(self, ev):
self.update()
class View(QtGui.QGraphicsView):
def resizeEvent(self, event):
super(View, self).resizeEvent(event)
self.fitInView(self.sceneRect(), QtCore.Qt.KeepAspectRatio)
if __name__ == '__main__':
import sys
import math
app = QtGui.QApplication(sys.argv)
kineticPix = QtGui.QPixmap(':/images/kinetic.png')
bgPix = QtGui.QPixmap(':/images/Time-For-Lunch-2.jpg')
scene = QtGui.QGraphicsScene(-350, -350, 700, 700)
items = []
for i in range(64):
item = Pixmap(kineticPix)
item.pixmap_item.setOffset(-kineticPix.width() / 2,
-kineticPix.height() / 2)
item.pixmap_item.setZValue(i)
items.append(item)
scene.addItem(item.pixmap_item)
# Buttons.
buttonParent = QtGui.QGraphicsRectItem()
ellipseButton = Button(QtGui.QPixmap(':/images/ellipse.png'), buttonParent)
figure8Button = Button(QtGui.QPixmap(':/images/figure8.png'), buttonParent)
randomButton = Button(QtGui.QPixmap(':/images/random.png'), buttonParent)
tiledButton = Button(QtGui.QPixmap(':/images/tile.png'), buttonParent)
centeredButton = Button(QtGui.QPixmap(':/images/centered.png'), buttonParent)
ellipseButton.setPos(-100, -100)
figure8Button.setPos(100, -100)
randomButton.setPos(0, 0)
tiledButton.setPos(-100, 100)
centeredButton.setPos(100, 100)
scene.addItem(buttonParent)
buttonParent.scale(0.75, 0.75)
buttonParent.setPos(200, 200)
buttonParent.setZValue(65)
# States.
rootState = QtCore.QState()
ellipseState = QtCore.QState(rootState)
figure8State = QtCore.QState(rootState)
randomState = QtCore.QState(rootState)
tiledState = QtCore.QState(rootState)
centeredState = QtCore.QState(rootState)
# Values.
for i, item in enumerate(items):
# Ellipse.
ellipseState.assignProperty(item, 'pos',
QtCore.QPointF(math.cos((i / 63.0) * 6.28) * 250,
math.sin((i / 63.0) * 6.28) * 250))
# Figure 8.
figure8State.assignProperty(item, 'pos',
QtCore.QPointF(math.sin((i / 63.0) * 6.28) * 250,
math.sin(((i * 2)/63.0) * 6.28) * 250))
# Random.
randomState.assignProperty(item, 'pos',
QtCore.QPointF(-250 + QtCore.qrand() % 500,
-250 + QtCore.qrand() % 500))
# Tiled.
tiledState.assignProperty(item, 'pos',
QtCore.QPointF(((i % 8) - 4) * kineticPix.width() + kineticPix.width() / 2,
((i // 8) - 4) * kineticPix.height() + kineticPix.height() / 2))
# Centered.
centeredState.assignProperty(item, 'pos', QtCore.QPointF())
# Ui.
view = View(scene)
view.setWindowTitle("Animated Tiles")
view.setViewportUpdateMode(QtGui.QGraphicsView.BoundingRectViewportUpdate)
view.setBackgroundBrush(QtGui.QBrush(bgPix))
view.setCacheMode(QtGui.QGraphicsView.CacheBackground)
view.setRenderHints(
QtGui.QPainter.Antialiasing | QtGui.QPainter.SmoothPixmapTransform)
view.show()
states = QtCore.QStateMachine()
states.addState(rootState)
states.setInitialState(rootState)
rootState.setInitialState(centeredState)
group = QtCore.QParallelAnimationGroup()
for i, item in enumerate(items):
anim = QtCore.QPropertyAnimation(item, 'pos')
anim.setDuration(750 + i * 25)
anim.setEasingCurve(QtCore.QEasingCurve.InOutBack)
group.addAnimation(anim)
trans = rootState.addTransition(ellipseButton.pressed, ellipseState)
trans.addAnimation(group)
trans = rootState.addTransition(figure8Button.pressed, figure8State)
trans.addAnimation(group)
trans = rootState.addTransition(randomButton.pressed, randomState)
trans.addAnimation(group)
trans = rootState.addTransition(tiledButton.pressed, tiledState)
trans.addAnimation(group)
trans = rootState.addTransition(centeredButton.pressed, centeredState)
trans.addAnimation(group)
timer = QtCore.QTimer()
timer.start(125)
timer.setSingleShot(True)
trans = rootState.addTransition(timer.timeout, ellipseState)
trans.addAnimation(group)
states.start()
sys.exit(app.exec_())
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