def paint(self, painter, option, index):
painter.setRenderHints(QPainter.Antialiasing
| QPainter.SmoothPixmapTransform)
model = index.model()
view = self.parent()
if view.hasFocus() and option.state & QStyle.State_MouseOver:
painter.setPen(Qt.NoPen)
painter.setBrush(Qt.gray)
painter.drawRoundedRect(option.rect.adjusted(1, 1, -1, -1),
self._ICON_MARGIN, self._ICON_MARGIN)
pixmap = model.data(index, Qt.DecorationRole).pixmap(view.iconSize())
pm_rect = QRect(
option.rect.topLeft() +
QPoint(self._ICON_MARGIN + 1, self._ICON_MARGIN + 1),
view.iconSize() -
QSize(self._ICON_MARGIN * 2, self._ICON_MARGIN * 2))
painter.drawPixmap(pm_rect, pixmap)
if option.state & QStyle.State_Selected:
painter.setPen(
QPen(Qt.red, 1.0, Qt.SolidLine, Qt.SquareCap, Qt.RoundJoin))
painter.setBrush(Qt.NoBrush)
painter.drawRect(option.rect.adjusted(2, 2, -2, -2))
font = view.font()
fm = QFontMetrics(font)
text = os.path.splitext(
os.path.basename(model.data(index, Qt.DisplayRole)))[0]
text = fm.elidedText(text, Qt.ElideRight, view.iconSize().width() - 4)
text_opt = QTextOption()
text_opt.setAlignment(Qt.AlignHCenter)
txt_rect = QRectF(QPointF(pm_rect.bottomLeft() + QPoint(0, 1)),
QPointF(option.rect.bottomRight() - QPoint(4, 3)))
painter.save()
painter.setPen(Qt.NoPen)
painter.setBrush(QColor(22, 22, 22, 220))
painter.drawRoundedRect(txt_rect.adjusted(-2, -2, 2, 2), 2, 2)
painter.restore()
painter.setPen(self.parent().palette().color(QPalette.WindowText))
painter.drawText(txt_rect, text, text_opt)
font.setPointSize(8)
fm = QFontMetrics(font)
item = model.itemFromIndex(index)
size_text = '%d x %d' % (item.size.width(), item.size.height())
size_rect = fm.boundingRect(option.rect, Qt.AlignLeft | Qt.AlignTop,
size_text)
size_rect.translate(4, 4)
painter.save()
painter.setPen(Qt.NoPen)
painter.setBrush(QColor(22, 22, 22, 220))
painter.drawRoundedRect(size_rect.adjusted(-2, -2, 2, 2), 2, 2)
painter.restore()
painter.setFont(font)
painter.drawText(size_rect, size_text)
def create_drop_indicator_pixmap(palette, size, drop_area):
border_color = palette.color(QPalette.Active, QPalette.Highlight)
background_color = palette.color(QPalette.Active, QPalette.Base)
area_background_color = palette.color(QPalette.Active,
QPalette.Highlight).lighter(150)
pm = QPixmap(size.width(), size.height())
pm.fill(QColor(0, 0, 0, 0))
painter = QPainter(pm)
pen = painter.pen()
base_rect = QRectF(pm.rect())
painter.fillRect(base_rect, background_color)
painter.save()
area_rect = QRectF()
area_line = QLineF()
gradient = QLinearGradient()
if drop_area == DropArea.TopDropArea:
area_rect = QRectF(base_rect.x(), base_rect.y(), base_rect.width(),
base_rect.height() * 0.5)
area_line = QLineF(area_rect.bottomLeft(), area_rect.bottomRight())
gradient.setStart(area_rect.topLeft())
gradient.setFinalStop(area_rect.bottomLeft())
gradient.setColorAt(0, area_background_color)
gradient.setColorAt(1, area_background_color.lighter(120))
elif drop_area == DropArea.RightDropArea:
area_rect = QRectF(base_rect.width() * 0.5, base_rect.y(),
base_rect.width() * 0.5, base_rect.height())
area_line = QLineF(area_rect.topLeft(), area_rect.bottomLeft())
gradient.setStart(area_rect.topLeft())
gradient.setFinalStop(area_rect.topRight())
gradient.setColorAt(0, area_background_color.lighter(120))
gradient.setColorAt(1, area_background_color)
elif drop_area == DropArea.BottomDropArea:
area_rect = QRectF(base_rect.x(),
base_rect.height() * 0.5, base_rect.width(),
base_rect.height() * 0.5)
area_line = QLineF(area_rect.topLeft(), area_rect.topRight())
gradient.setStart(area_rect.topLeft())
gradient.setFinalStop(area_rect.bottomLeft())
gradient.setColorAt(0, area_background_color.lighter(120))
gradient.setColorAt(1, area_background_color)
elif drop_area == DropArea.LeftDropArea:
area_rect = QRectF(base_rect.x(), base_rect.y(),
base_rect.width() * 0.5, base_rect.height())
area_line = QLineF(area_rect.topRight(), area_rect.bottomRight())
gradient.setStart(area_rect.topLeft())
gradient.setFinalStop(area_rect.topRight())
gradient.setColorAt(0, area_background_color)
gradient.setColorAt(1, area_background_color.lighter(120))
if area_rect.isValid():
painter.fillRect(area_rect, gradient)
pen = painter.pen()
pen.setColor(border_color)
pen.setStyle(Qt.DashLine)
painter.setPen(pen)
painter.drawLine(area_line)
painter.restore()
painter.save()
pen = painter.pen()
pen.setColor(border_color)
pen.setWidth(1)
painter.setPen(pen)
painter.drawRect(base_rect.adjusted(0, 0, -pen.width(), -pen.width()))
painter.restore()
return pm
class Callout(QGraphicsItem):
def __init__(self, chart):
super().__init__(chart)
self.m_chart = chart
self.m_text = ""
self.m_textRect = QRectF()
self.m_rect = QRectF()
self.m_anchor = QPointF()
self.m_font = QFont()
def boundingRect(self):
anchor = self.mapFromParent(self.m_chart.mapToPosition(self.m_anchor))
rect = QRectF()
rect.setLeft(min(self.m_rect.left(), anchor.x()))
rect.setRight(max(self.m_rect.right(), anchor.x()))
rect.setTop(min(self.m_rect.top(), anchor.y()))
rect.setBottom(max(self.m_rect.bottom(), anchor.y()))
return rect
def paint(self, painter, option, widget=None):
path = QPainterPath()
path.addRoundedRect(self.m_rect, 5, 5)
anchor = self.mapFromParent(self.m_chart.mapToPosition(self.m_anchor))
if not self.m_rect.contains(anchor):
point1 = QPointF()
point2 = QPointF()
# establish the position of the anchor point in relation to m_rect
above = anchor.y() <= self.m_rect.top()
aboveCenter = (anchor.y() > self.m_rect.top()
and anchor.y() <= self.m_rect.center().y())
belowCenter = (anchor.y() > self.m_rect.center().y()
and anchor.y() <= self.m_rect.bottom())
below = anchor.y() > self.m_rect.bottom()
onLeft = anchor.x() <= self.m_rect.left()
leftOfCenter = (anchor.x() > self.m_rect.left()
and anchor.x() <= self.m_rect.center().x())
rightOfCenter = (anchor.x() > self.m_rect.center().x()
and anchor.x() <= self.m_rect.right())
onRight = anchor.x() > self.m_rect.right()
# get the nearest m_rect corner.
x = (onRight + rightOfCenter) * self.m_rect.width()
y = (below + belowCenter) * self.m_rect.height()
cornerCase = ((above and onLeft) or (above and onRight)
or (below and onLeft) or (below and onRight))
vertical = abs(anchor.x() - x) > abs(anchor.y() - y)
x1 = (x + leftOfCenter * 10 - rightOfCenter * 20 +
cornerCase * int(not vertical) *
(onLeft * 10 - onRight * 20))
y1 = (y + aboveCenter * 10 - belowCenter * 20 +
cornerCase * int(vertical) * (above * 10 - below * 20))
point1.setX(x1)
point1.setY(y1)
x2 = (x + leftOfCenter * 20 - rightOfCenter * 10 +
cornerCase * int(not vertical) *
(onLeft * 20 - onRight * 10))
y2 = (y + aboveCenter * 20 - belowCenter * 10 +
cornerCase * int(vertical) * (above * 20 - below * 10))
point2.setX(x2)
point2.setY(y2)
path.moveTo(point1)
path.lineTo(anchor)
path.lineTo(point2)
path = path.simplified()
painter.setBrush(QColor(255, 255, 255))
painter.drawPath(path)
painter.drawText(self.m_textRect, self.m_text)
def mousePressEvent(self, event):
event.setAccepted(True)
def mouseMoveEvent(self, event):
if event.buttons() & Qt.LeftButton:
self.setPos(
self.mapToParent(event.pos() -
event.buttonDownPos(Qt.LeftButton)))
event.setAccepted(True)
else:
event.setAccepted(False)
def setText(self, text):
self.m_text = text
metrics = QFontMetrics(self.m_font)
self.m_textRect = QRectF(
metrics.boundingRect(QRect(0, 0, 150, 150), Qt.AlignLeft,
self.m_text))
self.m_textRect.translate(5, 5)
self.prepareGeometryChange()
self.m_rect = self.m_textRect.adjusted(-5, -5, 5, 5)
def setAnchor(self, point):
self.m_anchor = point
def updateGeometry(self):
self.prepareGeometryChange()
self.setPos(
self.m_chart.mapToPosition(self.m_anchor) + QPoint(10, -50))