def palette_pixmap(colors, size):
img = QPixmap(size)
img.fill(Qt.transparent)
grad = palette_gradient(colors)
grad.setCoordinateMode(QLinearGradient.ObjectBoundingMode)
painter = QPainter(img)
painter.setPen(Qt.NoPen)
painter.setBrush(QBrush(grad))
painter.drawRect(0, 0, size.width(), size.height())
painter.end()
return img
def paintEvent(self, event):
"""
Paint the interpolated pixmap image.
"""
p = QPainter(self)
p.setClipRect(event.rect())
factor = self.blendingFactor_ ** 2
if self.pixmap1 and 1. - factor:
p.setOpacity(1. - factor)
p.drawPixmap(QPoint(0, 0), self.pixmap1)
if self.pixmap2 and factor:
p.setOpacity(factor)
p.drawPixmap(QPoint(0, 0), self.pixmap2)
def createDiscPalettePixmap(width, height, palette):
p = QPainter()
img = QPixmap(width, height)
p.begin(img)
p.setPen(QPen(Qt.NoPen))
if type(palette) == dict: # if palette is the dict with different
palette = palette[max(palette.keys())]
if len(palette) == 0: return img
rectWidth = width / float(len(palette))
for i, col in enumerate(palette):
p.setBrush(QBrush(QColor(*col)))
p.drawRect(QRectF(i * rectWidth, 0, (i + 1) * rectWidth, height))
return img
def paint_with_data_(data):
paint_with_data(delegate, data, self.view.viewOptions())
model.setItemData(index, data)
opt = self.view.viewOptions()
size = delegate.sizeHint(opt, index).expandedTo(QSize(10, 10))
opt.rect = QRect(QPoint(0, 0), size)
delegate.initStyleOption(opt, index)
img = QImage(opt.rect.size(), QImage.Format_ARGB32_Premultiplied)
p = QPainter(img)
try:
delegate.paint(p, opt, index)
finally:
p.end()
def createExContPalettePixmap(width, height, color1, color2, passThroughColors):
p = QPainter()
img = QPixmap(width, height)
p.begin(img)
#p.eraseRect(0, 0, w, h)
p.setPen(QPen(Qt.NoPen))
g = QLinearGradient(0, 0, width, height)
g.setColorAt(0, color1)
g.setColorAt(1, color2)
for i, color in enumerate(passThroughColors):
g.setColorAt(float(i + 1) / (len(passThroughColors) + 1), color)
p.fillRect(img.rect(), QBrush(g))
return img
def test_pyside(self):
img = QImage(100, 100, QImage.Format_ARGB32)
img.fill(Qt.green)
p = QPainter(img)
pix = QPixmap(10, 10)
pix.fill(Qt.red)
frgmt = QPainter.PixmapFragment.create(
QPointF(25, 25),
QRectF(0, 0, 10, 10),
5., 5.,
)
p.drawPixmapFragments(frgmt, 1, pix)
p.end()
self.assertEqual(QColor(img.pixel(10, 10)), QColor(Qt.red))
def paintEvent(self, e):
"""
:param e:
:return:
"""
self._is_painting = True
super(EventsWidget, self).paintEvent(e)
painter = QPainter()
painter.begin(self)
painter.setRenderHint(QPainter.Antialiasing)
painter.setFont(QFont('Decorative', 8))
slider_pos = self._scroll.sliderPosition()
start = slider_pos * self._scale
end = start + self.width() * self._scale
for i, track in enumerate(self._tracks):
if self._break_draw:
break
track.draw_periods(painter, start, end, track_index=i, left_shift=-self._scroll.sliderPosition(),
scale=self._scale)
# Draw only from pixel start to end
painter.setPen(QtCore.Qt.DashLine)
painter.setOpacity(0.3)
# print('Draw', start, end, self._scale, self._scroll.sliderPosition(), self.width())
# Draw vertical lines
for x in range(start - (start % (100 * self._scale)), end, 100 * self._scale):
x2draw = (x - slider_pos * self._scale) // self._scale
painter.drawLine(x2draw, 20, x2draw, self.height())
string = str(x)
boundtext = painter.boundingRect(QtCore.QRectF(), string)
painter.drawText(x2draw - boundtext.width() / 2, 15, string)
for index, track in enumerate(self._tracks):
top = self.which_top(index)
# print(top)
painter.drawLine(0, top, self.width(), top)
painter.drawText(10, top + 15, track.title)
painter.setOpacity(1.0)
self._pointer.draw(painter, left_shift=-slider_pos, scale=self._scale) # Draw the time pointer
painter.end()
self._break_draw = False
self._is_painting = False
def paintEvent(self, event):
if self.__isTransparencySupported:
opt = QStyleOption()
opt.initFrom(self)
rect = opt.rect
p = QPainter(self)
p.setRenderHint(QPainter.Antialiasing, True)
p.setBrush(opt.palette.brush(QPalette.Window))
p.setPen(Qt.NoPen)
p.drawRoundedRect(rect, self.__radius, self.__radius)
p.end()
else:
StyledWidget_paintEvent(self, event)
def createContPalettePixmap(width, height, color1, color2, passThroughBlack):
p = QPainter()
img = QPixmap(width, height)
p.begin(img)
#p.eraseRect(0, 0, w, h)
p.setPen(QPen(Qt.NoPen))
g = QLinearGradient(0, 0, width, height)
g.setColorAt(0, color1)
g.setColorAt(1, color2)
if passThroughBlack:
g.setColorAt(0.5, Qt.black)
p.fillRect(img.rect(), QBrush(g))
return img
def paintEvent(self, event):
if self.__pixmap.isNull():
return
sourcerect = QRect(QPoint(0, 0), self.__pixmap.size())
pixsize = QSizeF(self.__pixmap.size())
rect = self.contentsRect()
pixsize.scale(QSizeF(rect.size()), Qt.KeepAspectRatio)
targetrect = QRectF(QPointF(0, 0), pixsize)
targetrect.moveCenter(QPointF(rect.center()))
painter = QPainter(self)
painter.setRenderHint(QPainter.SmoothPixmapTransform)
painter.drawPixmap(targetrect, self.__pixmap, QRectF(sourcerect))
painter.end()
def grab_svg(scene):
# type: (QGraphicsScene) -> str
"""
Return a SVG rendering of the scene contents.
Parameters
----------
scene : :class:`CanvasScene`
"""
svg_buffer = QBuffer()
gen = _QSvgGenerator()
gen.setOutputDevice(svg_buffer)
items_rect = scene.itemsBoundingRect().adjusted(-10, -10, 10, 10)
if items_rect.isNull():
items_rect = QRectF(0, 0, 10, 10)
width, height = items_rect.width(), items_rect.height()
rect_ratio = float(width) / height
# Keep a fixed aspect ratio.
aspect_ratio = 1.618
if rect_ratio > aspect_ratio:
height = int(height * rect_ratio / aspect_ratio)
else:
width = int(width * aspect_ratio / rect_ratio)
target_rect = QRectF(0, 0, width, height)
source_rect = QRectF(0, 0, width, height)
source_rect.moveCenter(items_rect.center())
gen.setSize(target_rect.size().toSize())
gen.setViewBox(target_rect)
painter = QPainter(gen)
# Draw background.
painter.setPen(Qt.NoPen)
painter.setBrush(scene.palette().base())
painter.drawRect(target_rect)
# Render the scene
scene.render(painter, target_rect, source_rect)
painter.end()
buffer_str = bytes(svg_buffer.buffer())
return buffer_str.decode("utf-8")
def paintEvent(self, event):
pixmap = self._shadowPixmap
widget_rect = QRectF(QPointF(0.0, 0.0), QSizeF(self.size()))
frame_rect = QRectF(self.contentsRect())
left, top, right, bottom = self.getContentsMargins()
pixmap_rect = QRectF(QPointF(0, 0), QSizeF(pixmap.size()))
# Shadow casting rectangle.
pixmap_shadow_rect = pixmap_rect.adjusted(left, top, -right, -bottom)
source_rects = self._shadowPixmapFragments(pixmap_rect,
pixmap_shadow_rect)
target_rects = self._shadowPixmapFragments(widget_rect, frame_rect)
painter = QPainter(self)
for source, target in zip(source_rects, target_rects):
painter.drawPixmap(target, pixmap, source)
painter.end()
def send_report(self):
from AnyQt.QtSvg import QSvgGenerator
if self.model:
self.reportSection("Tree")
_, filefn = self.getUniqueImageName(ext=".svg")
svg = QSvgGenerator()
svg.setFileName(filefn)
ssize = self.scene.sceneRect().size()
w, h = ssize.width(), ssize.height()
fact = 600 / w
svg.setSize(QSize(600, h * fact))
painter = QPainter()
painter.begin(svg)
self.scene.render(painter)
painter.end()
def crosshairs(color, radius=24, circle=False):
radius = max(radius, 16)
pixmap = QPixmap(radius, radius)
pixmap.fill(Qt.transparent)
painter = QPainter()
painter.begin(pixmap)
painter.setRenderHints(QPainter.Antialiasing)
pen = QPen(QBrush(color), 1)
pen.setWidthF(1.5)
painter.setPen(pen)
if circle:
painter.drawEllipse(2, 2, radius - 2, radius - 2)
painter.drawLine(radius / 2, 7, radius / 2, radius / 2 - 7)
painter.drawLine(7, radius / 2, radius / 2 - 7, radius / 2)
painter.end()
return pixmap
def __updateMask(self):
opt = QStyleOption()
opt.initFrom(self)
rect = opt.rect
size = rect.size()
mask = QBitmap(size)
p = QPainter(mask)
p.setRenderHint(QPainter.Antialiasing)
p.setBrush(Qt.black)
p.setPen(Qt.NoPen)
p.drawRoundedRect(rect, self.__radius, self.__radius)
p.end()
self.setMask(mask)
def paintEvent(self, event):
super().paintEvent(event)
p = QPainter(self)
p.setRenderHint(QPainter.Antialiasing)
p.setBrush(self.indicator_color)
p.save()
p.setPen(Qt.NoPen)
fm = QFontMetrics(self.font())
width = self.rect().width()
height = fm.height() + 6
rect = QRectF(0, 0, width, height)
p.drawRoundedRect(rect, 5, 5)
p.restore()
textstart = (width - fm.width(self.indicator_text)) / 2
p.drawText(textstart, height / 2 + 5, self.indicator_text)
def test_delegate(self):
model = DistanceMatrixModel()
matrix = np.array([[0.0, 0.1, 0.2], [0.1, 0.0, 0.1], [0.2, 0.1, 0.0]])
model.set_data(matrix)
delegate = TableBorderItem()
for row, col in product(range(model.rowCount()),
range(model.columnCount())):
index = model.index(row, col)
option = QStyleOptionViewItem()
size = delegate.sizeHint(option, index).expandedTo(QSize(30, 18))
delegate.initStyleOption(option, index)
img = QImage(size, QImage.Format_ARGB32_Premultiplied)
painter = QPainter(img)
try:
delegate.paint(painter, option, index)
finally:
painter.end()
def _makeTickMarks(self):
if self._tickList is None:
return
self._tickImage = pixmap = QPixmap(
self.width() - self._handleWidth - self._handleWidth,
self._tickHeight)
pixmap.fill(self.palette().color(QPalette.Active, QPalette.Background))
painter = QPainter(self._tickImage)
painter.setPen(QColor(165, 162, 148))
w = pixmap.width() - 1
v = self.__steps
for val in self._tickList:
if val < self.__scaledMinimum or val > self.__scaledMaximum:
continue
step = self.valueToSteps(val)
x = step * w / v
painter.drawLine(x, 0, x, self._tickHeight - 1)
def paint_with_data(
delegate: QAbstractItemDelegate,
data: Dict[int, Any],
options: QStyleOptionViewItem = None
) -> None:
model = create_model(1, 1)
index = model.index(0, 0)
model.setItemData(index, data)
opt = QStyleOptionViewItem(options) if options is not None else QStyleOptionViewItem()
size = delegate.sizeHint(opt, index).expandedTo(QSize(10, 10))
opt.rect = QRect(QPoint(0, 0), size)
delegate.initStyleOption(opt, index)
img = QImage(opt.rect.size(), QImage.Format_ARGB32_Premultiplied)
p = QPainter(img)
try:
delegate.paint(p, opt, index)
finally:
p.end()
def __paint(self):
picture = QPicture()
painter = QPainter(picture)
pen = QPen(QBrush(Qt.white), 0.5)
pen.setCosmetic(True)
painter.setPen(pen)
geom = self.geometry
x, y = geom.x(), geom.y()
w, h = geom.width(), geom.height()
wsingle = w / len(self.dist)
for d, c in zip(self.dist, self.colors):
painter.setBrush(QBrush(c))
painter.drawRect(QRectF(x, y, wsingle, d * h))
x += wsingle
painter.end()
self.__picture = picture
def setHistogram(self,
values=None,
bins=None,
use_kde=False,
histogram=None):
""" Set background histogram (or density estimation, violin plot)
The histogram of bins is calculated from values, optionally as a
Gaussian KDE. If histogram is provided, its values are used directly
and other parameters are ignored.
"""
if (values is None or not len(values)) and histogram is None:
self.setPixmap(None)
return
if histogram is not None:
self._histogram = hist = histogram
else:
if bins is None:
bins = min(100, max(10, len(values) // 20))
if use_kde:
hist = gaussian_kde(
values, None if isinstance(use_kde, bool) else use_kde)(
np.linspace(np.min(values), np.max(values), bins))
else:
hist = np.histogram(values, bins)[0]
self._histogram = hist = hist / hist.max()
HEIGHT = self.rect().height() / 2
OFFSET = HEIGHT * .3
pixmap = QPixmap(QSize(
len(hist), 2 *
(HEIGHT + OFFSET))) # +1 avoids right/bottom frame border shadow
pixmap.fill(Qt.transparent)
painter = QPainter(pixmap)
painter.setPen(QPen(Qt.darkGray))
for x, value in enumerate(hist):
painter.drawLine(x,
HEIGHT * (1 - value) + OFFSET, x,
HEIGHT * (1 + value) + OFFSET)
if self.orientation() != Qt.Horizontal:
pixmap = pixmap.transformed(QTransform().rotate(-90))
self.setPixmap(pixmap)
def qmacstyle_accent_color(style: QStyle):
option = QStyleOptionButton()
option.state |= (QStyle.State_Active | QStyle.State_Enabled
| QStyle.State_Raised)
option.features |= QStyleOptionButton.DefaultButton
option.text = ""
size = style.sizeFromContents(QStyle.CT_PushButton, option, QSize(20, 10),
None)
option.rect = QRect(0, 0, size.width(), size.height())
img = QImage(size.width(), size.height(),
QImage.Format_ARGB32_Premultiplied)
img.fill(Qt.transparent)
painter = QPainter(img)
try:
style.drawControl(QStyle.CE_PushButton, option, painter, None)
finally:
painter.end()
color = img.pixelColor(size.width() // 2, size.height() // 2)
return color
def __startInternalDrag(self, frame, hotSpot=None):
drag = QDrag(self)
pixmap = QPixmap(frame.size())
frame.render(pixmap)
transparent = QPixmap(pixmap.size())
transparent.fill(Qt.transparent)
painter = QPainter(transparent)
painter.setOpacity(0.35)
painter.drawPixmap(0, 0, pixmap.width(), pixmap.height(), pixmap)
painter.end()
drag.setPixmap(transparent)
if hotSpot is not None:
drag.setHotSpot(hotSpot)
mime = QMimeData()
mime.setData("application/x-internal-move", b"")
drag.setMimeData(mime)
return drag.exec(Qt.MoveAction)
def splash_screen():
# type: () -> Tuple[QPixmap, QRect]
"""
Return a splash screen pixmap and an text area within it.
The text area is used for displaying text messages during application
startup.
The default implementation returns a bland rectangle splash screen.
Returns
-------
t : Tuple[QPixmap, QRect]
A QPixmap and a rect area within it.
"""
path = pkg_resources.resource_filename(
__name__, "icons/orange-canvas-core-splash.svg")
pm = QPixmap(path)
version = QCoreApplication.applicationVersion()
if version:
version_parsed = LooseVersion(version)
version_comp = version_parsed.version
version = ".".join(map(str, version_comp[:2]))
size = 21 if len(version) < 5 else 16
font = QFont()
font.setPixelSize(size)
font.setBold(True)
font.setItalic(True)
font.setLetterSpacing(QFont.AbsoluteSpacing, 2)
metrics = QFontMetrics(font)
br = metrics.boundingRect(version).adjusted(-5, 0, 5, 0)
br.moveBottomRight(QPoint(pm.width() - 15, pm.height() - 15))
p = QPainter(pm)
p.setRenderHint(QPainter.Antialiasing)
p.setRenderHint(QPainter.TextAntialiasing)
p.setFont(font)
p.setPen(QColor("#231F20"))
p.drawText(br, Qt.AlignCenter, version)
p.end()
textarea = QRect(15, 15, 170, 20)
return pm, textarea
def render_drop_shadow_frame(pixmap, shadow_rect, shadow_color, offset, radius,
rect_fill_color):
pixmap.fill(QColor(0, 0, 0, 0))
scene = QGraphicsScene()
rect = QGraphicsRectItem(shadow_rect)
rect.setBrush(QColor(rect_fill_color))
rect.setPen(QPen(Qt.NoPen))
scene.addItem(rect)
effect = QGraphicsDropShadowEffect(color=shadow_color,
blurRadius=radius,
offset=offset)
rect.setGraphicsEffect(effect)
scene.setSceneRect(QRectF(QPointF(0, 0), QSizeF(pixmap.size())))
painter = QPainter(pixmap)
scene.render(painter)
painter.end()
scene.clear()
scene.deleteLater()
return pixmap
def export(self, filename=None):
pw = QPdfWriter(filename)
dpi = QApplication.desktop().logicalDpiX()
pw.setResolution(dpi)
pw.setPageMargins(QMarginsF(0, 0, 0, 0))
pw.setPageSizeMM(QSizeF(self.getTargetRect().size()) / dpi * 25.4)
painter = QPainter(pw)
try:
self.setExportMode(True, {'antialias': True,
'background': self.background,
'painter': painter})
painter.setRenderHint(QPainter.Antialiasing, True)
if QtCore.QT_VERSION >= 0x050D00:
painter.setRenderHint(QPainter.LosslessImageRendering, True)
self.getScene().render(painter,
QRectF(self.getTargetRect()),
QRectF(self.getSourceRect()))
finally:
self.setExportMode(False)
painter.end()
def picture_this_level():
# Create a QPicture drawing the contribution from this
# level only. This is all regions where the contingency is
# not empty and does not have a computed sub-contingency
# (i.e. the node does not have a child in that cell).
pic = QPicture()
painter = QPainter(pic)
ctng = node.contingencies
colors = create_image(ctng, palette, scale=scale)
x, y, w, h = node.brect
N, M = ctng.shape[:2]
# Nonzero contingency mask
any_mask = Node_mask(node)
if node.is_leaf:
skip = itertools.repeat(False)
else:
# Skip all None children they were already painted.
skip = (ch is not None for ch in node.children.flat)
painter.save()
painter.translate(x, y)
painter.scale(w / node.nbins, h / node.nbins)
indices = itertools.product(range(N), range(M))
for (i, j), skip, any_ in zip(indices, skip, any_mask.flat):
if not skip and any_:
painter.setBrush(QColor(*colors[i, j]))
if shape == Rect:
painter.drawRect(i, j, 1, 1)
elif shape == Circle:
painter.drawEllipse(i, j, 1, 1)
elif shape == RoundRect:
painter.drawRoundedRect(i, j, 1, 1, 25.0, 25.0,
Qt.RelativeSize)
painter.restore()
painter.end()
return pic
def paintEvent(self, e):
# call the base implementation to paint normal interface
super(GaugeWidgetVertical, self).paintEvent(e)
draw = QPainter()
draw.begin(self)
window_with = self.width() - 1
diff = (self._higher - self._lower) * self.scale
try:
self._step = float(self.height()) / float(diff)
except ZeroDivisionError:
self._step = 0
y_start = self.height() - (self._minVal - self._lower) * self._step * self.scale
y_end = self.height() - (self._maxVal - self._lower) * self._step * self.scale
draw.setOpacity(1.0)
draw.setBrush(QtCore.Qt.NoBrush)
draw.setPen(QColor(200, 200, 255))
b = int(self.height() / 5)
e = int(self.height() - (self.height() / 5) + 1)
s = int(self.height() / 5)
for i in range( b, e, s ):
draw.drawLine(0, i, window_with, i)
draw.setBrush(QColor(33, 133, 208))
draw.setPen(QColor(33, 133, 208))
draw.setOpacity(0.7)
draw.drawRect(0, y_start, window_with, y_end - y_start)
draw.setFont(QFont('Decorative', 8))
draw.setPen(QColor(30, 30, 30))
draw.drawText(3, self.height() - 3, str(self._lower) if self._use_float else str(int(round(self._lower))))
draw.drawText(3, 10, str(self._higher) if self._use_float else str(int(round(self._higher))))
draw.drawText(3, y_start + 11, str(self._minVal) if self._use_float else str(int(round(self._minVal))))
draw.drawText(3, y_end - 4, str(self._maxVal) if self._use_float else str(int(round(self._maxVal))))
draw.end()
def pixmap(self, size, mode, state):
# type: (QSize, QIcon.Mode, QIcon.State) -> QPixmap
if not self.__generator.isValid():
return QPixmap()
dsize = self.__generator.defaultSize() # type: QSize
if not dsize.isNull():
dsize.scale(size, Qt.KeepAspectRatio)
size = dsize
pm = QPixmap(size)
pm.fill(Qt.transparent)
painter = QPainter(pm)
try:
self.__generator.render(painter, QRectF(0, 0, size.width(), size.height()))
finally:
painter.end()
style = QApplication.style()
if style is not None:
opt = QStyleOption()
opt.palette = QApplication.palette()
pm = style.generatedIconPixmap(mode, pm, opt)
return pm
def export(self, filename=None):
from AnyQt.QtGui import QPdfWriter
pw = QPdfWriter(filename)
dpi = QDesktopWidget().logicalDpiX()
pw.setResolution(dpi)
pw.setPageMargins(QMarginsF(0, 0, 0, 0))
pw.setPageSizeMM(QSizeF(self.getTargetRect().size()) / dpi * 25.4)
painter = QPainter(pw)
try:
self.setExportMode(
True, {
'antialias': True,
'background': self.background,
'painter': painter
})
painter.setRenderHint(QPainter.Antialiasing, True)
self.getScene().render(painter, QRectF(self.getTargetRect()),
QRectF(self.getSourceRect()))
finally:
self.setExportMode(False)
painter.end()
