class ThrobbingButton(QToolButton): def __init__(self, *args): QToolButton.__init__(self, *args) self.animation = QPropertyAnimation(self, 'iconSize', self) self.animation.setDuration(60/72.*1000) self.animation.setLoopCount(4) self.normal_icon_size = QSize(64, 64) self.animation.valueChanged.connect(self.value_changed) self.setCursor(Qt.PointingHandCursor) self.animation.finished.connect(self.animation_finished) def set_normal_icon_size(self, w, h): self.normal_icon_size = QSize(w, h) self.setIconSize(self.normal_icon_size) try: self.setMinimumSize(self.sizeHint()) except: self.setMinimumSize(QSize(w+5, h+5)) def animation_finished(self): self.setIconSize(self.normal_icon_size) def enterEvent(self, ev): self.start_animation() def leaveEvent(self, ev): self.stop_animation() def value_changed(self, val): self.update() def start_animation(self): if config['disable_animations']: return if self.animation.state() != self.animation.Stopped or not self.isVisible(): return size = self.normal_icon_size.width() smaller = int(0.7 * size) self.animation.setStartValue(QSize(smaller, smaller)) self.animation.setEndValue(self.normal_icon_size) QMetaObject.invokeMethod(self.animation, 'start', Qt.QueuedConnection) def stop_animation(self): self.animation.stop() self.animation_finished()
class ThrobbingButton(QToolButton): def __init__(self, *args): QToolButton.__init__(self, *args) self.animation = QPropertyAnimation(self, 'iconSize', self) self.animation.setDuration(60 / 72. * 1000) self.animation.setLoopCount(4) self.normal_icon_size = QSize(64, 64) self.animation.valueChanged.connect(self.value_changed) self.setCursor(Qt.PointingHandCursor) self.animation.finished.connect(self.animation_finished) def set_normal_icon_size(self, w, h): self.normal_icon_size = QSize(w, h) self.setIconSize(self.normal_icon_size) try: self.setMinimumSize(self.sizeHint()) except: self.setMinimumSize(QSize(w + 5, h + 5)) def animation_finished(self): self.setIconSize(self.normal_icon_size) def enterEvent(self, ev): self.start_animation() def leaveEvent(self, ev): self.stop_animation() def value_changed(self, val): self.update() def start_animation(self): if config['disable_animations']: return if self.animation.state( ) != self.animation.Stopped or not self.isVisible(): return size = self.normal_icon_size.width() smaller = int(0.7 * size) self.animation.setStartValue(QSize(smaller, smaller)) self.animation.setEndValue(self.normal_icon_size) QMetaObject.invokeMethod(self.animation, 'start', Qt.QueuedConnection) def stop_animation(self): self.animation.stop() self.animation_finished()
class SlideFlip(QWidget): # API {{{ # In addition the isVisible() and setVisible() methods must be present def __init__(self, parent): QWidget.__init__(self, parent) self.setGeometry(0, 0, 1, 1) self._current_width = 0 self.before_image = self.after_image = None self.animation = QPropertyAnimation(self, 'current_width', self) self.setVisible(False) self.animation.valueChanged.connect(self.update) self.animation.finished.connect(self.finished) self.flip_forwards = True self.setAttribute(Qt.WA_OpaquePaintEvent) @property def running(self): 'True iff animation is currently running' return self.animation.state() == self.animation.Running def initialize(self, image, forwards=True): ''' Initialize the flipper, causes the flipper to show itself displaying the full `image`. :param image: The image to display as background :param forwards: If True flipper will flip forwards, otherwise backwards ''' self.flip_forwards = forwards self.before_image = QPixmap.fromImage(image) self.after_image = None self.setGeometry(0, 0, image.width(), image.height()) self.setVisible(True) def __call__(self, image, duration=0.5): ''' Start the animation. You must have called :meth:`initialize` first. :param duration: Animation duration in seconds. ''' if self.running: return self.after_image = QPixmap.fromImage(image) if self.flip_forwards: self.animation.setStartValue(image.width()) self.animation.setEndValue(0) t = self.before_image self.before_image = self.after_image self.after_image = t self.animation.setEasingCurve(QEasingCurve(QEasingCurve.InExpo)) else: self.animation.setStartValue(0) self.animation.setEndValue(image.width()) self.animation.setEasingCurve(QEasingCurve(QEasingCurve.OutExpo)) self.animation.setDuration(duration * 1000) self.animation.start() # }}} def finished(self): self.setVisible(False) self.before_image = self.after_image = None def paintEvent(self, ev): if self.before_image is None: return canvas_size = self.rect() p = QPainter(self) p.setRenderHints(QPainter.Antialiasing | QPainter.SmoothPixmapTransform) p.drawPixmap(canvas_size, self.before_image, self.before_image.rect()) if self.after_image is not None: width = self._current_width iw = self.after_image.width() sh = min(self.after_image.height(), canvas_size.height()) if self.flip_forwards: source = QRect(max(0, iw - width), 0, width, sh) else: source = QRect(0, 0, width, sh) target = QRect(source) target.moveLeft(0) p.drawPixmap(target, self.after_image, source) p.end() def set_current_width(self, val): self._current_width = val current_width = pyqtProperty('int', fget=lambda self: self._current_width, fset=set_current_width)