def paintEvent(self, event):
'''Paint widget.'''
painter = QtGui.QPainter()
painter.begin(self)
try:
painter.setRenderHint(QtGui.QPainter.Antialiasing)
area = QtCore.QRect(0, 0,
painter.device().width(),
painter.device().height())
center = QtCore.QPointF(area.width() / 2.0, area.height() / 2.0)
# Draw in a normalised centered box.
normalisedEdge = 100.0
normalisedArea = QtCore.QRectF(-(normalisedEdge / 2.0),
-(normalisedEdge / 2.0),
normalisedEdge, normalisedEdge)
shortestSide = min(area.width(), area.height())
painter.translate(center)
painter.scale(shortestSide / normalisedEdge,
shortestSide / normalisedEdge)
# Draw logo.
svgRenderer = QtSvg.QSvgRenderer()
svgRenderer.load(self._logo)
logoMargin = 30.0
logoArea = normalisedArea.adjusted(logoMargin, logoMargin,
-logoMargin, -logoMargin)
svgRenderer.render(painter, logoArea)
# Draw spinner at current spin angle.
pen = QtGui.QPen()
penWidth = 5.0
pen.setWidth(penWidth)
gradient = QtGui.QConicalGradient(QtCore.QPoint(0, 0),
-self._spinnerAngle)
gradient.setColorAt(0.95, QtCore.Qt.transparent)
gradient.setColorAt(0, self._spinnerColor)
brush = QtGui.QBrush(gradient)
pen.setBrush(brush)
painter.setPen(pen)
spinnerArea = QtCore.QRectF(
normalisedArea.top() + (penWidth / 2.0),
normalisedArea.left() + (penWidth / 2.0),
normalisedArea.width() - penWidth,
normalisedArea.height() - penWidth)
painter.drawArc(
spinnerArea,
0, # Start angle.
360 * 16 # Span angle.
)
finally:
painter.end()
def doLayout(self, rect, testOnly=False):
x = rect.x()
y = rect.y()
lineHeight = 0
for item in self.itemList:
wid = item.widget()
spaceX = self.spacing() + wid.style().layoutSpacing(
QtWidgets.QSizePolicy.PushButton,
QtWidgets.QSizePolicy.PushButton, QtCore.Qt.Horizontal)
spaceY = self.spacing() + wid.style().layoutSpacing(
QtWidgets.QSizePolicy.PushButton,
QtWidgets.QSizePolicy.PushButton, QtCore.Qt.Vertical)
nextX = x + item.sizeHint().width() + spaceX
if nextX - spaceX > rect.right() and lineHeight > 0:
x = rect.x()
y = y + lineHeight + spaceY
nextX = x + item.sizeHint().width() + spaceX
lineHeight = 0
if not testOnly:
item.setGeometry(
QtCore.QRect(QtCore.QPoint(x, y), item.sizeHint()))
x = nextX
lineHeight = max(lineHeight, item.sizeHint().height())
return y + lineHeight - rect.y()
def resizeEvent(self, event):
wrapper = self.findChild(QtWidgets.QWidget)
flow = wrapper.findChild(FlowLayout)
if wrapper and flow:
width = self.viewport().width()
height = flow.heightForWidth(width)
size = QtCore.QSize(width, height)
point = self.viewport().rect().topLeft()
flow.setGeometry(QtCore.QRect(point, size))
self.viewport().update()
super(ResizeScrollArea, self).resizeEvent(event)
def resizeEvent(self, event):
'''Handle resize *event*.
Position action buttons.
'''
contentRegion = self.rect()
widgetGeometry = QtCore.QRect(
QtCore.QPoint(
contentRegion.width() - self._iconRegion.width(),
(contentRegion.height() - self._iconRegion.height()) / 2
),
self._iconSize
)
for button in self._actionButtons:
button.setGeometry(widgetGeometry)
widgetGeometry.moveLeft(
widgetGeometry.left() - self._iconRegion.width()
)
def paintEvent(self, event):
'''Handle paint *event*.'''
painter = QtWidgets.QPainter(self)
# Note: isDown should ideally use the 'active' state, but in most styles
# this has no proper feedback.
state = QtGui.QIcon.Disabled
if self.isEnabled():
state = QtGui.QIcon.Normal
if self.isDown():
state = QtGui.QIcon.Selected
iconPixmap = self.icon().pixmap(
QtCore.QSize(self.iconSize, self.iconSize),
state,
QtGui.QIcon.Off
)
iconRegion = QtCore.QRect(
0, 0, iconPixmap.width(), iconPixmap.height()
)
iconRegion.moveCenter(self.rect().center())
painter.drawPixmap(iconRegion, iconPixmap)
def minimumSize(self):
w = self.geometry().width()
h = self.doLayout(QtCore.QRect(0, 0, w, 0), True)
return QtCore.QSize(w, h)
def heightForWidth(self, width):
height = self.doLayout(QtCore.QRect(0, 0, width, 0), True)
return height
def paintEvent(self, event):
'''Paint widget.'''
painter = QtGui.QPainter()
painter.begin(self)
try:
painter.setRenderHint(QtGui.QPainter.Antialiasing)
area = QtCore.QRect(
0, 0, painter.device().width(), painter.device().height()
)
center = QtCore.QPointF(
area.width() / 2.0,
area.height() / 2.0
)
# Draw in a normalised centered box.
normalisedEdge = 100.0
normalisedArea = QtCore.QRectF(
-(normalisedEdge / 2.0), -(normalisedEdge / 2.0),
normalisedEdge, normalisedEdge
)
shortestSide = min(area.width(), area.height())
painter.translate(center)
painter.scale(
shortestSide / normalisedEdge,
shortestSide / normalisedEdge
)
# Draw spinner at current spin angle.
pen = QtGui.QPen()
penWidth = 8.0
pen.setWidth(penWidth)
pen.setColor(self._spinnerColor)
pen.setCapStyle(QtCore.Qt.RoundCap)
gradient = QtGui.QConicalGradient(
QtCore.QPoint(0, 0),
-self._spinnerAngle
)
gradient.setColorAt(0.95, self._spinnerColor)
gradient.setColorAt(0, self._spinnerColor)
brush = QtGui.QBrush(gradient)
pen.setBrush(brush)
painter.setPen(pen)
spinnerArea = QtCore.QRectF(
normalisedArea.top() + (penWidth / 2.0),
normalisedArea.left() + (penWidth / 2.0),
normalisedArea.width() - penWidth,
normalisedArea.height() - penWidth
)
painter.drawArc(
spinnerArea,
-self._spinnerAngle * 16, # Start angle.
250 * 16 # Span angle.
)
finally:
painter.end()
