def replace(self):
log.trace("Icon is %r", self._icon)
self._icon_geometry = rect = self._icon.geometry()
log.trace("IconRect is : %s,%s | %s,%s",rect.x(), rect.y(), rect.width(), rect.height())
from PyQt4.QtGui import QApplication, QCursor
from PyQt4.QtCore import QRect
desktop = QApplication.desktop()
log.trace("Screen id is %d", desktop.screenNumber(rect.topLeft()))
screen = desktop.availableGeometry(desktop.screenNumber(rect.topLeft()))
pos = screen
log.trace("AvailableRect is : %s,%s | %s,%s",pos.x(), pos.y(), pos.width(), pos.height())
pos = desktop.screenGeometry(desktop.screenNumber(rect.topLeft()))
log.trace("ScreenRect is : %s,%s | %s,%s",pos.x(), pos.y(), pos.width(), pos.height())
pos = QCursor.pos()
log.trace("Cursor is : %s,%s",pos.x(), pos.y())
if not rect.contains(pos) or (rect.x() == 0 and rect.y() == 0):
# Avoid any modulo 0
if rect.width() == 0 or rect.height() == 0:
rect = QRect(pos.x(), pos.y(), rect.width(), rect.height())
else:
rect = QRect(pos.x()-pos.x()%rect.width(), pos.y()-pos.y()%rect.height(), rect.width(), rect.height())
log.trace("Adjusting X/Y to %d/%d", rect.x(), rect.y())
pos = rect
log.trace("New rect is : %s,%s | %s,%s",pos.x(), pos.y(), pos.width(), pos.height())
x = rect.x() + rect.width() - self.width()
y = rect.y() - self.height()
# Prevent the systray to be hidden
if y < 0:
y = rect.y() + rect.height()
if x < 0:
x = rect.x()
log.trace("Move systray menu to %d/%d", x, y)
self.move(x, y)
def paint(self, painter, rect):
update_rect = rect & self.rect()
if not update_rect:
return
image_rect = QRect(update_rect.topLeft() - self.rect().topLeft(),
update_rect.size())
image = cache.image(self)
self._waiting = not image
if image:
painter.drawImage(update_rect, image, image_rect)
else:
# schedule an image to be generated, if done our update() method is called
cache.generate(self)
# find suitable image to be scaled from other size
image = cache.image(self, False)
if image:
hscale = float(image.width()) / self.width()
vscale = float(image.height()) / self.height()
image_rect = QRectF(image_rect.x() * hscale,
image_rect.y() * vscale,
image_rect.width() * hscale,
image_rect.height() * vscale)
painter.drawImage(QRectF(update_rect), image, image_rect)
else:
# draw blank paper, using the background color of the cache rendering (if set)
# or from the document itself.
color = (cache.options(self.document()).paperColor()
or cache.options().paperColor()
or self.document().paperColor())
painter.fillRect(update_rect, color)
def paint(self, painter, rect):
update_rect = rect & self.rect()
if not update_rect:
return
image_rect = QRect(update_rect.topLeft() - self.rect().topLeft(), update_rect.size())
image = cache.image(self)
self._waiting = not image
if image:
painter.drawImage(update_rect, image, image_rect)
else:
# schedule an image to be generated, if done our update() method is called
cache.generate(self)
# find suitable image to be scaled from other size
image = cache.image(self, False)
if image:
hscale = float(image.width()) / self.width()
vscale = float(image.height()) / self.height()
image_rect = QRectF(image_rect.x() * hscale, image_rect.y() * vscale,
image_rect.width() * hscale, image_rect.height() * vscale)
painter.drawImage(QRectF(update_rect), image, image_rect)
else:
# draw blank paper, using the background color of the cache rendering (if set)
# or from the document itself.
color = (cache.options(self.document()).paperColor()
or cache.options().paperColor() or self.document().paperColor())
painter.fillRect(update_rect, color)
def read_state(load=True):
home = os.path.expanduser('~')
r = QRect(0, 0, 640, 480)
r.moveCenter(QApplication.desktop().availableGeometry().center())
geometry = [r.x(), r.y(), r.width(), r.height()]
state = dict(last_file_parent=home,
last_dir_parent=home,
last_save=home,
geometry=geometry,
zoom_factor=1.0,
history=[],
history_current=-1,
scroll_values={})
try:
if load and os.path.exists(state_file):
f = gzip.open(state_file, 'rb')
try:
loaded = json.load(f)
state.update(loaded)
finally:
f.close()
except:
show_error(_('Failed to load saved application state'))
return state
def request( self, qrect, along_through=None ):
assert isinstance(qrect, QRect)
# Widen request with a 1-pixel halo, to make sure edges on the tile borders are shown.
qrect = QRect( qrect.x(), qrect.y(), qrect.width()+1, qrect.height()+1 )
s = rect2slicing(qrect)
arrayreq = self._arraySource2D.request(s, along_through)
return SegmentationEdgesItemRequest(arrayreq, self._layer, qrect)
def request( self, qrect, along_through=None ):
assert isinstance(qrect, QRect)
# Widen request with a 1-pixel halo, to make sure edges on the tile borders are shown.
qrect = QRect( qrect.x(), qrect.y(), qrect.width()+1, qrect.height()+1 )
s = rect2slicing(qrect)
arrayreq = self._arraySource2D.request(s, along_through)
return SegmentationEdgesItemRequest(arrayreq, self._layer, qrect)
def read_state(load=True):
home = os.path.expanduser('~')
r = QRect(0, 0, 640, 480)
r.moveCenter(QApplication.desktop().availableGeometry().center())
geometry = [r.x(), r.y(), r.width(), r.height()]
state = dict(last_file_parent=home,
last_dir_parent=home,
last_save=home,
geometry=geometry,
zoom_factor=1.0,
history=[],
history_current=-1,
scroll_values={})
try:
if load and os.path.exists(state_file):
f = gzip.open(state_file, 'rb')
try:
loaded = json.load(f)
state.update(loaded)
finally:
f.close()
except:
show_error(_('Failed to load saved application state'))
return state
def replace(self):
log.trace("Icon is %r", self._icon)
self._icon_geometry = rect = self._icon.geometry()
log.trace("IconRect is : %s,%s | %s,%s", rect.x(), rect.y(),
rect.width(), rect.height())
from PyQt4.QtGui import QApplication, QCursor
from PyQt4.QtCore import QRect
desktop = QApplication.desktop()
log.trace("Screen id is %d", desktop.screenNumber(rect.topLeft()))
screen = desktop.availableGeometry(desktop.screenNumber(
rect.topLeft()))
pos = screen
log.trace("AvailableRect is : %s,%s | %s,%s", pos.x(), pos.y(),
pos.width(), pos.height())
pos = desktop.screenGeometry(desktop.screenNumber(rect.topLeft()))
log.trace("ScreenRect is : %s,%s | %s,%s", pos.x(), pos.y(),
pos.width(), pos.height())
pos = QCursor.pos()
log.trace("Cursor is : %s,%s", pos.x(), pos.y())
if not rect.contains(pos) or (rect.x() == 0 and rect.y() == 0):
# Avoid any modulo 0
if rect.width() == 0 or rect.height() == 0:
rect = QRect(pos.x(), pos.y(), rect.width(), rect.height())
else:
rect = QRect(pos.x() - pos.x() % rect.width(),
pos.y() - pos.y() % rect.height(), rect.width(),
rect.height())
log.trace("Adjusting X/Y to %d/%d", rect.x(), rect.y())
pos = rect
log.trace("New rect is : %s,%s | %s,%s", pos.x(), pos.y(),
pos.width(), pos.height())
x = rect.x() + rect.width() - self.width()
y = rect.y() - self.height()
# Prevent the systray to be hidden
if y < 0:
y = rect.y() + rect.height()
if x < 0:
x = rect.x()
log.trace("Move systray menu to %d/%d", x, y)
self.move(x, y)
def paintVerticalSection(self, painter: QPainter, sectionRect: QRect,
logicalLeafIndex: int, hv: QHeaderView,
styleOptions: QStyleOptionHeader,
leafIndex: QModelIndex):
oldBO = painter.brushOrigin()
left = sectionRect.x()
indexes = QModelIndexList(self.parentIndexes(leafIndex))
for i in range(indexes.size()):
realStyleOptions = QStyleOptionHeader(styleOptions)
if i < indexes.size() - 1 and (
realStyleOptions.state & QStyle.State_Sunken
or realStyleOptions.state & QStyle.State_On):
t = QStyle.State(QStyle.State_Sunken | QStyle.State_On)
realStyleOptions.state = realStyleOptions.state & ~t #FIXME: parent items are not highlighted
left = self.paintVerticalCell(painter, hv, indexes[i],
leafIndex, logicalLeafIndex,
realStyleOptions, sectionRect,
left)
painter.setBrushOrigin(oldBO)
def paint (self, painter, option, index):
model = index.model()
item = model.data(index).toPyObject()
if item == None:
return
text = str(item)
if (len(text) > 6):
# take only megabytes -->12<--345678
mb = text[:len(text)-6]
bytes = text[len(text)-6:]
painter.setPen (Qt.red)
painter.drawText (option.rect,Qt.AlignHCenter and Qt.AlignVCenter, mb)
painter.setPen (Qt.black)
rect = QRect()
rect = option.rect
rect.setX(rect.x()+8*(len(mb)))
painter.drawText (rect, Qt.AlignHCenter and Qt.AlignVCenter, bytes)
else:
painter.drawText (option.rect, Qt.AlignHCenter and Qt.AlignVCenter, text)
def paint (self, painter, option, index):
model = index.model()
item = model.data(index).toPyObject()
if item == None:
return
text = str(item)
if (len(text) > 6):
# take only megabytes -->12<--345678
mb = text[:len(text)-6]
bytes = text[len(text)-6:]
painter.setPen (Qt.red)
painter.drawText (option.rect,Qt.AlignHCenter and Qt.AlignVCenter, mb)
painter.setPen (Qt.black)
rect = QRect()
rect = option.rect
rect.setX(rect.x()+8*(len(mb)))
painter.drawText (rect, Qt.AlignHCenter and Qt.AlignVCenter, bytes)
else:
painter.drawText (option.rect, Qt.AlignHCenter and Qt.AlignVCenter, text)
class BrushingModel(QObject):
brushSizeChanged = pyqtSignal(int)
brushColorChanged = pyqtSignal(QColor)
brushStrokeAvailable = pyqtSignal(QPointF, object)
drawnNumberChanged = pyqtSignal(int)
minBrushSize = 1
maxBrushSize = 61
defaultBrushSize = 3
defaultDrawnNumber = 1
defaultColor = Qt.white
erasingColor = Qt.black
erasingNumber = 100
def __init__(self):
QObject.__init__(self)
self.sliceRect = None
self.bb = QRect() #bounding box enclosing the drawing
self.brushSize = self.defaultBrushSize
self.drawColor = self.defaultColor
self._temp_color = None
self._temp_number = None
self.drawnNumber = self.defaultDrawnNumber
self.pos = None
self.erasing = False
self.drawOnto = None
#an empty scene, where we add all drawn line segments
#a QGraphicsLineItem, and which we can use to then
#render to an image
self.scene = QGraphicsScene()
def toggleErase(self):
self.erasing = not(self.erasing)
if self.erasing:
self.setErasing()
else:
self.disableErasing()
def setErasing(self):
self.erasing = True
self._temp_color = self.drawColor
self._temp_number = self.drawnNumber
self.setBrushColor(self.erasingColor)
self.brushColorChanged.emit(self.erasingColor)
self.setDrawnNumber(self.erasingNumber)
def disableErasing(self):
self.erasing = False
self.setBrushColor(self._temp_color)
self.brushColorChanged.emit(self.drawColor)
self.setDrawnNumber(self._temp_number)
def setBrushSize(self, size):
self.brushSize = size
self.brushSizeChanged.emit(self.brushSize)
def setDrawnNumber(self, num):
print "Setting Drawnnumer", num
self.drawnNumber = num
self.drawnNumberChanged.emit(num)
def getBrushSize(self):
return self.brushSize
def brushSmaller(self):
b = self.brushSize
if b > self.minBrushSize:
self.setBrushSize(b-1)
def brushBigger(self):
b = self.brushSize
if self.brushSize < self.maxBrushSize:
self.setBrushSize(b+1)
def setBrushColor(self, color):
self.drawColor = color
self.brushColorChanged.emit(self.drawColor)
def beginDrawing(self, pos, sliceRect):
self.sliceRect = sliceRect
self.scene.clear()
self.bb = QRect()
self.pos = QPointF(pos.x()+0.0001, pos.y()+0.0001)
line = self.moveTo(pos)
return line
def endDrawing(self, pos):
self.moveTo(pos)
tempi = QImage(QSize(self.bb.width(), self.bb.height()), QImage.Format_ARGB32_Premultiplied) #TODO: format
tempi.fill(0)
painter = QPainter(tempi)
self.scene.render(painter, target=QRectF(), source=QRectF(QPointF(self.bb.x(), self.bb.y()), QSizeF(self.bb.width(), self.bb.height())))
painter.end()
ndarr = qimage2ndarray.rgb_view(tempi)[:,:,0]
labels = numpy.where(ndarr>0,numpy.uint8(self.drawnNumber),numpy.uint8(0))
labels = labels.swapaxes(0,1)
assert labels.shape[0] == self.bb.width()
assert labels.shape[1] == self.bb.height()
self.brushStrokeAvailable.emit(QPointF(self.bb.x(), self.bb.y()), labels)
def dumpDraw(self, pos):
res = self.endDrawing(pos)
self.beginDrawing(pos, self.sliceRect)
return res
def moveTo(self, pos):
oldX, oldY = self.pos.x(), self.pos.y()
x,y = pos.x(), pos.y()
#print "BrushingModel.moveTo(pos=%r)" % (pos)
line = QGraphicsLineItem(oldX, oldY, x, y)
line.setPen(QPen( QBrush(Qt.white), self.brushSize, Qt.SolidLine, Qt.RoundCap, Qt.RoundJoin))
self.scene.addItem(line)
#update bounding Box
if not self.bb.isValid():
self.bb = QRect(QPoint(x,y), QSize(1,1))
#grow bounding box
self.bb.setLeft( min(self.bb.left(), max(0, x-self.brushSize/2-1) ) )
self.bb.setRight( max(self.bb.right(), min(self.sliceRect[0]-1, x+self.brushSize/2+1) ) )
self.bb.setTop( min(self.bb.top(), max(0, y-self.brushSize/2-1) ) )
self.bb.setBottom(max(self.bb.bottom(), min(self.sliceRect[1]-1, y+self.brushSize/2+1) ) )
#update/move position
self.pos = pos
class ImagePatch(object):
"""
A tile/patch that makes up the whole 2D scene as displayed in ImageScene2D.
An ImagePatch has a bounding box (self.rect, self.rectF) and
its image content is either represented by a QImage (in software rendering)
or via an OpenGL texture.
When the current image content becomes invalid or is currently
being overwritten, the patch becomes dirty.
"""
def __init__(self, rectF):
assert(type(rectF) == QRectF)
self.rectF = rectF
self.rect = QRect(round(rectF.x()), round(rectF.y()), \
round(rectF.width()), round(rectF.height()))
self._image = QImage(self.rect.width(), self.rect.height(), QImage.Format_ARGB32_Premultiplied)
self.texture = -1
self.dirty = True
self.mutex = QMutex()
@property
def height(self):
return self.rect.height()
@property
def width(self):
return self.rect.width()
def drawTexture(self):
"""
Renders the current context as a texture.
Precondition: OpenGL mode and OpenGL context active.
"""
tx = self.rect.x()
ty = self.rect.y()
w = self.rect.width()
h = self.rect.height()
glBindTexture(GL_TEXTURE_2D, self.texture)
glBegin(GL_QUADS)
glTexCoord2f(0.0, 1.0)
glVertex2f(tx, ty)
glTexCoord2f(1.0, 1.0)
glVertex2f(tx + w, ty)
glTexCoord2f(1.0, 0.0)
glVertex2f(tx + w, ty + h)
glTexCoord2f(0.0, 0.0)
glVertex2f(tx, ty + h)
glEnd()
@property
def image(self):
return self._image
@image.setter
def image(self, img):
self._image = img
self.dirty = False
class XSnapshotWidget(QWidget):
def __init__(self, parent=None):
super(XSnapshotWidget, self).__init__(parent)
# define custom properties
self._region = QRect()
self._filepath = ''
# define custom properties
palette = self.palette()
palette.setColor(palette.Window, QColor('white'))
self.setPalette(palette)
self.setWindowOpacity(0.5)
self.setWindowFlags(Qt.SplashScreen)
self.setFocus()
def accept(self):
"""
Prompts the user for the filepath to save and then saves the image.
"""
filetypes = 'PNG Files (*.png);;JPG Files (*.jpg);;All Files (*.*)'
filename = QFileDialog.getSaveFileName(None,
'Save Snapshot',
self.filepath(),
filetypes)
if type(filename) == tuple:
filename = filename[0]
filename = str(filename)
if not filename:
self.reject()
else:
self.setFilepath(filename)
self.save()
def filepath(self):
"""
Returns the filepath that is going to be asved for this snapshot widget.
:return <str>
"""
return self._filepath
def hideWindow(self):
"""
Sets the window to hide/show while taking the snapshot.
:param window | <QMainWindow> || <QDialog>
"""
return self._hideWindow
def keyPressEvent(self, event):
"""
Listens for the escape key to cancel out from this snapshot.
:param event | <QKeyPressEvent>
"""
# reject on a cancel
if event.key() == Qt.Key_Escape:
self.reject()
super(XSnapshotWidget, self).keyPressEvent(event)
def mousePressEvent(self, event):
"""
Starts the selection process for this widget and snapshot area.
:param event | <QMousePressEvent>
"""
self._region.setX(event.pos().x())
self._region.setY(event.pos().y())
super(XSnapshotWidget, self).mousePressEvent(event)
def mouseMoveEvent(self, event):
"""
Drags the selection view for this widget.
:param event | <QMouseMoveEvent>
"""
w = event.pos().x() - self._region.x()
h = event.pos().y() - self._region.y()
self._region.setWidth(w)
self._region.setHeight(h)
self.repaint()
super(XSnapshotWidget, self).mouseMoveEvent(event)
def mouseReleaseEvent(self, event):
"""
Finishes the selection event.
:param event | <QMouseReleaseEvent>
"""
self.accept()
super(XSnapshotWidget, self).mouseReleaseEvent(event)
def paintEvent(self, event):
"""
Handles the drawing for this widget and its selection region.
:param event | <QPaintEvent>
"""
pen = QPen(Qt.DashLine)
pen.setColor(QColor('red'))
painter = QPainter(self)
painter.setPen(pen)
clr = QColor('black')
clr.setAlpha(100)
painter.setBrush(clr)
painter.drawRect(self._region)
def reject(self):
"""
Rejects the snapshot and closes the widget.
"""
if self.hideWindow():
self.hideWindow().show()
self.close()
self.deleteLater()
def region(self):
"""
Returns the selection region defined by the rectangle for snapshoting.
:return <QRect>
"""
return self._region
def save(self):
"""
Saves the snapshot based on the current region.
"""
# close down the snapshot widget
if self.hideWindow():
self.hideWindow().hide()
self.hide()
QApplication.processEvents()
time.sleep(1)
# create the pixmap to save
wid = QApplication.desktop().winId()
if not self._region.isNull():
x = self._region.x()
y = self._region.y()
w = self._region.width()
h = self._region.height()
else:
x = self.x()
y = self.y()
w = self.width()
h = self.height()
pixmap = QPixmap.grabWindow(wid, x, y, w, h)
pixmap.save(self.filepath())
self.close()
self.deleteLater()
if self.hideWindow():
self.hideWindow().show()
def show(self):
"""
Shows this widget and hides the specified window if necessary.
"""
super(XSnapshotWidget, self).show()
if self.hideWindow():
self.hideWindow().hide()
QApplication.processEvents()
def setFilepath(self, filepath):
"""
Sets the filepath that will be saved for this snapshot.
:param filepath | <str>
"""
self._filepath = filepath
def setHideWindow(self, window):
"""
Sets the window that will be hidden while this snapshot is being
taken.
:param window | <QMainWindow>
"""
self._hideWindow = window
def setRegion(self, rect):
"""
Sets the region rectangle to the inputed rect.
:param rect | <QRect>
"""
if rect is not None:
self._region = rect
@staticmethod
def capture(rect=None, filepath='', prompt=True, hideWindow=None):
"""
Prompts the user to capture the screen.
:param rect | <QRect>
filepath | <str>
prompt | <bool>
:return (<str> filepath, <bool> accepted)
"""
widget = XSnapshotWidget(QApplication.desktop())
widget.setRegion(rect)
widget.setHideWindow(hideWindow)
widget.setFilepath(filepath)
widget.move(1, 1)
widget.resize(QApplication.desktop().size())
if prompt or not filepath:
widget.show()
else:
widget.save()
def __layout(self):
# position itself over `widget`
widget = self.__widget
if widget is None:
return
alignment = self.__alignment
policy = self.sizePolicy()
if widget.isWindow():
bounds = widget.geometry()
else:
bounds = QRect(widget.mapToGlobal(QPoint(0, 0)),
widget.size())
if self.isWindow():
bounds = bounds
else:
bounds = QRect(self.parent().mapFromGlobal(bounds.topLeft()),
bounds.size())
sh = self.sizeHint()
minsh = self.minimumSizeHint()
minsize = self.minimumSize()
if minsize.isNull():
minsize = minsh
maxsize = bounds.size().boundedTo(self.maximumSize())
minsize = minsize.boundedTo(maxsize)
effectivesh = sh.expandedTo(minsize).boundedTo(maxsize)
hpolicy = policy.horizontalPolicy()
vpolicy = policy.verticalPolicy()
def getsize(hint, minimum, maximum, policy):
if policy == QSizePolicy.Ignored:
return maximum
elif policy & QSizePolicy.ExpandFlag:
return maximum
else:
return max(hint, minimum)
width = getsize(effectivesh.width(), minsize.width(),
maxsize.width(), hpolicy)
heightforw = self.heightForWidth(width)
if heightforw > 0:
height = getsize(heightforw, minsize.height(),
maxsize.height(), vpolicy)
else:
height = getsize(effectivesh.height(), minsize.height(),
maxsize.height(), vpolicy)
size = QSize(width, height)
if alignment & Qt.AlignLeft:
x = bounds.x()
elif alignment & Qt.AlignRight:
x = bounds.right() - size.width()
else:
x = bounds.x() + max(0, bounds.width() - size.width()) // 2
if alignment & Qt.AlignTop:
y = bounds.y()
elif alignment & Qt.AlignBottom:
y = bounds.bottom() - size.height()
else:
y = bounds.y() + max(0, bounds.height() - size.height()) // 2
geom = QRect(QPoint(x, y), size)
self.setGeometry(geom)
def paintVerticalSection(self, painter: QPainter, sectionRect: QRect, logicalLeafIndex: int, hv: QHeaderView, styleOptions: QStyleOptionHeader, leafIndex: QModelIndex):
oldBO = painter.brushOrigin()
left = sectionRect.x()
indexes = QModelIndexList(self.parentIndexes(leafIndex))
for i in range(indexes.size()):
realStyleOptions = QStyleOptionHeader(styleOptions)
if i<indexes.size()-1 and (realStyleOptions.state&QStyle.State_Sunken or realStyleOptions.state&QStyle.State_On):
t = QStyle.State(QStyle.State_Sunken | QStyle.State_On)
realStyleOptions.state = realStyleOptions.state&~t #FIXME: parent items are not highlighted
left=self.paintVerticalCell(painter, hv, indexes[i], leafIndex, logicalLeafIndex, realStyleOptions, sectionRect, left)
painter.setBrushOrigin(oldBO)
def __init__(self, orientation: Qt.Orientation, parent: QWidget):
super().__init__(orientation, parent)
self._pd = self.private_data()
self.sectionResized.connect(self.on_sectionResized)
self.setHighlightSections(self.options.get("highlightSections"))
self.setClickable(self.options.get("clickable"))
self.show() #force to be visible
getattr(parent, "set%sHeader"%("Horizontal", "Vertical")[orientation!=Qt.Horizontal])(self)
self.sectionMoved.connect(self.on_sectionMoved)
def on_sectionMoved(self, logicalIndex, oldVisualIndex, newVisualIndex):
view, model = self.parent(), self.parent().model()
if not hasattr(model, "reorder"):
return #reorder underlying data of models with /reorder/ def only
if getattr(self, "manual_move", False):
self.manual_move=False
return
self.manual_move=True
self.moveSection(newVisualIndex, oldVisualIndex) #cancel move
if model.reorder(oldVisualIndex, newVisualIndex, self.orientation()):
#Reorder column widths / row heights
horizontal = self.orientation()==Qt.Horizontal
itemSize = (view.rowHeight, view.columnWidth)[horizontal]
setItemSize = (view.setRowHeight, view.setColumnWidth)[horizontal]
rng = sorted((oldVisualIndex, newVisualIndex))
options = [(itemSize(i), i) for i in range(rng[0], rng[1]+1)]
options.insert(newVisualIndex-rng[0], options.pop(oldVisualIndex-rng[0]))
for i, col in enumerate(range(rng[0], rng[1]+1)):
setItemSize(col, options[i][0])
getattr(view, "select"+("Row", "Column")[horizontal])(newVisualIndex) #FIXME: don't select if sorting is enable?
if self.isSortIndicatorShown():
sortIndIndex = next((i for i, o in enumerate(options) if o[1]==self.sortIndicatorSection()), None)
if sortIndIndex is not None: #sort indicator is among sections being reordered
self.setSortIndicator(sortIndIndex+rng[0], self.sortIndicatorOrder()) #FIXME: does unnecessary sorting
model.layoutChanged.emit() #update view
def styleOptionForCell(self, logicalInd: int)->QStyleOptionHeader:
opt = QStyleOptionHeader()
self.initStyleOption(opt)
if self.isSortIndicatorShown() and self.sortIndicatorSection()==logicalInd:
opt.sortIndicator = (QStyleOptionHeader.SortUp, QStyleOptionHeader.SortDown)[self.sortIndicatorOrder()==Qt.AscendingOrder]
if self.window().isActiveWindow():
opt.state = opt.state|QStyle.State_Active
opt.textAlignment = Qt.AlignCenter
opt.iconAlignment = Qt.AlignVCenter
opt.section = logicalInd
visual = self.visualIndex(logicalInd)
if self.count() == 1:
opt.position = QStyleOptionHeader.OnlyOneSection
else:
if visual == 0:
opt.position = QStyleOptionHeader.Beginning
else:
opt.position = QStyleOptionHeader.End if visual==self.count()-1 else QStyleOptionHeader.Middle
if self.isClickable():
# if logicalIndex == d.hover:
# ...
if self.highlightSections() and self.selectionModel():
if self.orientation()==Qt.Horizontal:
if self.selectionModel().columnIntersectsSelection(logicalInd, self.rootIndex()):
opt.state = opt.state|QStyle.State_On
if self.selectionModel().isColumnSelected(logicalInd, self.rootIndex()):
opt.state = opt.state|QStyle.State_Sunken
else:
if self.selectionModel().rowIntersectsSelection(logicalInd, self.rootIndex()):
opt.state = opt.state|QStyle.State_On
if self.selectionModel().isRowSelected(logicalInd, self.rootIndex()):
opt.state = opt.state|QStyle.State_Sunken
if self.selectionModel():
previousSelected=False
if self.orientation()==Qt.Horizontal:
previousSelected = self.selectionModel().isColumnSelected(self.logicalIndex(visual - 1), self.rootIndex())
else:
previousSelected = self.selectionModel().isRowSelected(self.logicalIndex(visual - 1), self.rootIndex())
nextSelected=False
if self.orientation()==Qt.Horizontal:
nextSelected = self.selectionModel().isColumnSelected(self.logicalIndex(visual + 1), self.rootIndex())
else:
nextSelected = self.selectionModel().isRowSelected(self.logicalIndex(visual + 1), self.rootIndex())
if previousSelected and nextSelected:
opt.selectedPosition = QStyleOptionHeader.NextAndPreviousAreSelected
else:
if previousSelected:
opt.selectedPosition = QStyleOptionHeader.PreviousIsSelected
else:
if nextSelected:
opt.selectedPosition = QStyleOptionHeader.NextIsSelected
else:
opt.selectedPosition = QStyleOptionHeader.NotAdjacent
return opt
def sectionSizeFromContents(self, logicalIndex: int)->QSize:
if self._pd.headerModel:
curLeafIndex = QModelIndex(self._pd.leafIndex(logicalIndex))
if curLeafIndex.isValid():
styleOption = QStyleOptionHeader(self.styleOptionForCell(logicalIndex))
s = QSize(self._pd.cellSize(curLeafIndex, self, styleOption))
curLeafIndex=curLeafIndex.parent()
while curLeafIndex.isValid():
if self.orientation() == Qt.Horizontal:
s.setHeight(s.height()+self._pd.cellSize(curLeafIndex, self, styleOption).height())
else:
s.setWidth(s.width()+self._pd.cellSize(curLeafIndex, self, styleOption).width())
curLeafIndex=curLeafIndex.parent()
return s
return super().sectionSizeFromContents(logicalIndex)
def paintSection(self, painter: QPainter, rect: QRect, logicalIndex: int):
if rect.isValid():
leafIndex = QModelIndex(self._pd.leafIndex(logicalIndex))
if leafIndex.isValid():
if self.orientation() == Qt.Horizontal:
self._pd.paintHorizontalSection(painter, rect, logicalIndex, self, self.styleOptionForCell(logicalIndex), leafIndex)
else:
self._pd.paintVerticalSection(painter, rect, logicalIndex, self, self.styleOptionForCell(logicalIndex), leafIndex)
return
super().paintSection(painter, rect, logicalIndex)
def on_sectionResized(self, logicalIndex: int):
if self.isSectionHidden(logicalIndex):
return
leafIndex = QModelIndex(self._pd.leafIndex(logicalIndex))
if leafIndex.isValid():
leafsList = QModelIndexList(self._pd.leafs(self._pd.findRootIndex(leafIndex)))
for n in range(leafsList.indexOf(leafIndex), 0, -1):
logicalIndex-=1
w = self.viewport().width()
h = self.viewport().height()
pos = self.sectionViewportPosition(logicalIndex)
r = QRect(pos, 0, w - pos, h)
if self.orientation() == Qt.Horizontal:
if self.isRightToLeft():
r.setRect(0, 0, pos + self.sectionSize(logicalIndex), h)
else:
r.setRect(0, pos, w, h - pos)
self.viewport().update(r.normalized())
def setModel(self, model):
super().setModel(model)
model.layoutChanged.connect(self.layoutChanged)
self.layoutChanged()
def layoutChanged(self):
if self.model():
self._pd.initFromNewModel(self.orientation(), self.model())
axis = ("column", "row")[self.orientation()!=Qt.Horizontal]
cnt = getattr(self.model(), axis+"Count")(QModelIndex())
if cnt:
self.initializeSections(0, cnt-1)
MultiIndexHeaderView=HierarchicalHeaderView
class DataFrameModel(QtCore.QAbstractTableModel):
#na_values:least|greatest - for sorting
options = {"striped": True, "stripesColor": "#fafafa", "na_values": "least",
"tooltip_min_len": 21}
def __init__(self, dataframe=None):
super().__init__()
self.setDataFrame(dataframe if dataframe is not None else pd.DataFrame())
def setDataFrame(self, dataframe):
self.df = dataframe.copy()
# self.df_full = self.df
self.layoutChanged.emit()
def rowCount(self, parent):
return len(self.df)
def columnCount(self, parent):
return len(self.df.columns)
def readLevel(self, y=0, xs=0, xe=None, orient=None):
c = getattr(self.df, ("columns", "index")[orient!=HorizontalHeaderDataRole])
if not hasattr(c, "levels"): #not MultiIndex
return [QtGui.QStandardItem(str(i)) for i in c]
sibl = []
section_start, v, xe = xs, None, xe or len(c)
for i in range(xs, xe):
label = c.labels[y][i]
if label!=v:
if y+1<len(c.levels) and i>xs:
children = self.readLevel(y+1, section_start, i, orient=orient)
sibl[-1].appendRow(children)
item = QtGui.QStandardItem(str(c.levels[y][label]))
sibl.append(item)
section_start = i
v=label
if y+1<len(c.levels):
children = self.readLevel(y+1, section_start, orient=orient)
sibl[-1].appendRow(children)
return sibl
def data(self, index, role):
row, col = index.row(), index.column()
if role in (Qt.DisplayRole, Qt.ToolTipRole):
ret = self.df.iat[row, col]
if ret is not None and ret==ret: #convert to str except for None, NaN, NaT
if isinstance(ret, float):
ret = "{:n}".format(ret)
elif isinstance(ret, datetime.date):
#FIXME: show microseconds optionally
ret = ret.strftime(("%x", "%c")[isinstance(ret, datetime.datetime)])
else: ret = str(ret)
if role == Qt.ToolTipRole:
if len(ret)<self.options["tooltip_min_len"]: ret = ""
return ret
elif role == Qt.BackgroundRole:
if self.options["striped"] and row%2:
return QBrush(QColor(self.options["stripesColor"]))
elif role in (HorizontalHeaderDataRole, VerticalHeaderDataRole):
hm = QtGui.QStandardItemModel()
hm.appendRow(self.readLevel(orient=role))
return hm
def reorder(self, oldIndex, newIndex, orientation):
"Reorder columns / rows"
horizontal = orientation==Qt.Horizontal
cols = list(self.df.columns if horizontal else self.df.index)
cols.insert(newIndex, cols.pop(oldIndex))
self.df = self.df[cols] if horizontal else self.df.T[cols].T
return True
# def filter(self, filt=None):
# self.df = self.df_full if filt is None else self.df[filt]
# self.layoutChanged.emit()
def headerData(self, section, orientation, role):
if role != Qt.DisplayRole: return
label = getattr(self.df, ("columns", "index")[orientation!=Qt.Horizontal])[section]
# return label if type(label) is tuple else label
return ("\n", " | ")[orientation!=Qt.Horizontal].join(str(i) for i in label) if type(label) is tuple else str(label)
def dataFrame(self):
return self.df
def sort(self, column, order):
# print("sort", column, order) #FIXME: double sort after setSortingEnabled(True)
if len(self.df):
asc = order==Qt.AscendingOrder
na_pos = 'first' if (self.options["na_values"]=="least")==asc else 'last'
self.df.sort_values(self.df.columns[column], ascending=asc,
inplace=True, na_position=na_pos)
self.layoutChanged.emit()
if __name__=="__main__":
import sys, locale
locale.setlocale(locale.LC_ALL, '') #system locale settings
app = QtGui.QApplication(sys.argv)
form = QtGui.QWidget()
form.setAttribute(Qt.WA_DeleteOnClose) #http://stackoverflow.com/a/27178019/1119602
form.setMinimumSize(700, 260)
view = QtGui.QTableView()
QtGui.QVBoxLayout(form).addWidget(view)
form.show()
#Prepare data
tuples=[('bar', 'one', 'q'), ('bar', 'two', 'q'), ('baz', 'one', 'q'), ('baz', 'two', 'q'),
('foo', 'one', 'q'), ('foo', 'two', 'q'), ('qux', 'one', 'q'), ('qux', 'two', 'q')]
index = pd.MultiIndex.from_tuples(tuples, names=['first', 'second', 'third'])
df=pd.DataFrame(pd.np.random.randn(6, 6), index=index[:6], columns=index[:6])
print("DataFrame:\n%s"%df)
#Prepare view
# oldh, oldv = view.horizontalHeader(), view.verticalHeader()
# oldh.setParent(form), oldv.setParent(form) #Save old headers for some reason
MultiIndexHeaderView(Qt.Horizontal, view)
MultiIndexHeaderView(Qt.Vertical, view)
view.horizontalHeader().setMovable(True) #reorder DataFrame columns manually
#Set data
view.setModel(DataFrameModel(df))
view.resizeColumnsToContents()
view.resizeRowsToContents()
#Set sorting enabled (after setting model)
view.setSortingEnabled(True)
sys.exit(app.exec())
class BrushingModel(QObject):
brushSizeChanged = pyqtSignal(int)
brushColorChanged = pyqtSignal(QColor)
brushStrokeAvailable = pyqtSignal(QPointF, object)
drawnNumberChanged = pyqtSignal(int)
minBrushSize = 1
maxBrushSize = 61
defaultBrushSize = 3
defaultDrawnNumber = 1
defaultColor = Qt.white
erasingColor = Qt.black
erasingNumber = 100
def __init__(self, parent=None):
QObject.__init__(self, parent=parent)
self.sliceRect = None
self.bb = QRect() #bounding box enclosing the drawing
self.brushSize = self.defaultBrushSize
self.drawColor = self.defaultColor
self._temp_color = None
self._temp_number = None
self.drawnNumber = self.defaultDrawnNumber
self.pos = None
self.erasing = False
self._hasMoved = False
self.drawOnto = None
#an empty scene, where we add all drawn line segments
#a QGraphicsLineItem, and which we can use to then
#render to an image
self.scene = QGraphicsScene()
def toggleErase(self):
self.erasing = not(self.erasing)
if self.erasing:
self.setErasing()
else:
self.disableErasing()
def setErasing(self):
self.erasing = True
self._temp_color = self.drawColor
self._temp_number = self.drawnNumber
self.setBrushColor(self.erasingColor)
self.brushColorChanged.emit(self.erasingColor)
self.setDrawnNumber(self.erasingNumber)
def disableErasing(self):
self.erasing = False
self.setBrushColor(self._temp_color)
self.brushColorChanged.emit(self.drawColor)
self.setDrawnNumber(self._temp_number)
def setBrushSize(self, size):
self.brushSize = size
self.brushSizeChanged.emit(self.brushSize)
def setDrawnNumber(self, num):
self.drawnNumber = num
self.drawnNumberChanged.emit(num)
def getBrushSize(self):
return self.brushSize
def brushSmaller(self):
b = self.brushSize
if b > self.minBrushSize:
self.setBrushSize(b-1)
def brushBigger(self):
b = self.brushSize
if self.brushSize < self.maxBrushSize:
self.setBrushSize(b+1)
def setBrushColor(self, color):
self.drawColor = color
self.brushColorChanged.emit(self.drawColor)
def beginDrawing(self, pos, sliceRect):
'''
pos -- QPointF-like
'''
self.sliceRect = sliceRect
self.scene.clear()
self.bb = QRect()
self.pos = QPointF(pos.x(), pos.y())
self._hasMoved = False
def endDrawing(self, pos):
has_moved = self._hasMoved # _hasMoved will change after calling moveTo
if has_moved:
self.moveTo(pos)
else:
assert(self.pos == pos)
self.moveTo(QPointF(pos.x()+0.0001, pos.y()+0.0001)) # move a little
tempi = QImage(QSize(self.bb.width(), self.bb.height()), QImage.Format_ARGB32_Premultiplied) #TODO: format
tempi.fill(0)
painter = QPainter(tempi)
self.scene.render(painter, target=QRectF(), source=QRectF(QPointF(self.bb.x(), self.bb.y()), QSizeF(self.bb.width(), self.bb.height())))
painter.end()
ndarr = qimage2ndarray.rgb_view(tempi)[:,:,0]
labels = numpy.where(ndarr>0,numpy.uint8(self.drawnNumber),numpy.uint8(0))
labels = labels.swapaxes(0,1)
assert labels.shape[0] == self.bb.width()
assert labels.shape[1] == self.bb.height()
##
## ensure that at least one pixel is label when the brush size is 1
##
## this happens when the user just clicked without moving
## in that case the lineitem will be so tiny, that it won't be rendered
## into a single pixel by the code above
if not has_moved and self.brushSize <= 1 and numpy.count_nonzero(labels) == 0:
labels[labels.shape[0]//2, labels.shape[1]//2] = self.drawnNumber
self.brushStrokeAvailable.emit(QPointF(self.bb.x(), self.bb.y()), labels)
def dumpDraw(self, pos):
res = self.endDrawing(pos)
self.beginDrawing(pos, self.sliceRect)
return res
def moveTo(self, pos):
#data coordinates
oldX, oldY = self.pos.x(), self.pos.y()
x,y = pos.x(), pos.y()
line = QGraphicsLineItem(oldX, oldY, x, y)
line.setPen(QPen( QBrush(Qt.white), self.brushSize, Qt.SolidLine, Qt.RoundCap, Qt.RoundJoin))
self.scene.addItem(line)
self._hasMoved = True
#update bounding Box
if not self.bb.isValid():
self.bb = QRect(QPoint(oldX,oldY), QSize(1,1))
#grow bounding box
self.bb.setLeft( min(self.bb.left(), max(0, x-self.brushSize/2-1) ) )
self.bb.setRight( max(self.bb.right(), min(self.sliceRect[0]-1, x+self.brushSize/2+1) ) )
self.bb.setTop( min(self.bb.top(), max(0, y-self.brushSize/2-1) ) )
self.bb.setBottom(max(self.bb.bottom(), min(self.sliceRect[1]-1, y+self.brushSize/2+1) ) )
#update/move position
self.pos = pos
class EdittableTimeLine(TimeLine):
""" Adds items from mouse events. """
_draw_box = None
snap_frames = None
box_color = QColor('yellow')
def __init__(self, parent=None):
TimeLine.__init__(self, parent)
self.setMouseTracking(False)
def paintEvent(self, e):
TimeLine.paintEvent(self, e)
if self._draw_box:
painter = QPainter(self)
color = QColor(self.box_color)
color.setAlpha(100)
painter.setPen(color)
color.setAlpha(50)
painter.setBrush(color)
painter.drawRect(self._draw_box)
def snap(self, frame):
""" snap to the closest multiple of snap_frames """
after = self.clock.last_beat_frame
while after < frame:
after += self.snap_frames
before = after - self.snap_frames
if frame - before < after - frame:
return before
else:
return after
def mousePressEvent(self, e):
self.stop()
self._draw_box = QRect(e.x(), 0, 15, self.height())
self.update()
def mouseMoveEvent(self, e):
x, y = self._draw_box.x(), 0
w, h = e.x() - self._draw_box.x(), self.height()
self._draw_box = QRect(x, y ,w, h)
self.update()
def mouseDoubleClickEvent(self, e):
""" add an infinite item """
def mouseReleaseEvent(self, e):
if self._draw_box is None:
return # OS X
self.start()
startframe = self.frametime_for_x(self._draw_box.x())
endframe = self.frametime_for_x(e.x())
if self.snap_frames:
startframe = self.snap(startframe)
endframe = self.snap(endframe)
item = Item()
item.starttime = startframe
item.endtime = endframe
self.add(item)
self.emit(SIGNAL('newItem(int, int)'), startframe, endframe)
self._draw_box = None
self.update()
class BrushingModel(QObject):
brushSizeChanged = pyqtSignal(int)
brushColorChanged = pyqtSignal(QColor)
brushStrokeAvailable = pyqtSignal(QPointF, object)
drawnNumberChanged = pyqtSignal(int)
minBrushSize = 1
maxBrushSize = 61
defaultBrushSize = 3
defaultDrawnNumber = 1
defaultColor = Qt.white
erasingColor = Qt.black
erasingNumber = 100
def __init__(self, parent=None):
QObject.__init__(self, parent=parent)
self.sliceRect = None
self.bb = QRect() #bounding box enclosing the drawing
self.brushSize = self.defaultBrushSize
self.drawColor = self.defaultColor
self._temp_color = None
self._temp_number = None
self.drawnNumber = self.defaultDrawnNumber
self.pos = None
self.erasing = False
self._hasMoved = False
self.drawOnto = None
#an empty scene, where we add all drawn line segments
#a QGraphicsLineItem, and which we can use to then
#render to an image
self.scene = QGraphicsScene()
def toggleErase(self):
self.erasing = not(self.erasing)
if self.erasing:
self.setErasing()
else:
self.disableErasing()
def setErasing(self):
self.erasing = True
self._temp_color = self.drawColor
self._temp_number = self.drawnNumber
self.setBrushColor(self.erasingColor)
self.brushColorChanged.emit(self.erasingColor)
self.setDrawnNumber(self.erasingNumber)
def disableErasing(self):
self.erasing = False
self.setBrushColor(self._temp_color)
self.brushColorChanged.emit(self.drawColor)
self.setDrawnNumber(self._temp_number)
def setBrushSize(self, size):
self.brushSize = size
self.brushSizeChanged.emit(self.brushSize)
def setDrawnNumber(self, num):
self.drawnNumber = num
self.drawnNumberChanged.emit(num)
def getBrushSize(self):
return self.brushSize
def brushSmaller(self):
b = self.brushSize
if b > self.minBrushSize:
self.setBrushSize(b-1)
def brushBigger(self):
b = self.brushSize
if self.brushSize < self.maxBrushSize:
self.setBrushSize(b+1)
def setBrushColor(self, color):
self.drawColor = color
self.brushColorChanged.emit(self.drawColor)
def beginDrawing(self, pos, sliceRect):
'''
pos -- QPointF-like
'''
self.sliceRect = sliceRect
self.scene.clear()
self.bb = QRect()
self.pos = QPointF(pos.x(), pos.y())
self._hasMoved = False
def endDrawing(self, pos):
has_moved = self._hasMoved # _hasMoved will change after calling moveTo
if has_moved:
self.moveTo(pos)
else:
assert(self.pos == pos)
self.moveTo(QPointF(pos.x()+0.0001, pos.y()+0.0001)) # move a little
# Qt seems to use strange rules for determining which pixels to set when rendering a brush stroke to a QImage.
# We seem to get better results if we do the following:
# 1) Slightly offset the source window because apparently there is a small shift in the data
# 2) Render the scene to an image that is MUCH larger than the scene resolution (4x by 4x)
# 3) Downsample each 4x4 patch from the large image back to a single pixel in the final image,
# applying some threshold to determine if the final pixel is on or off.
tempi = QImage(QSize(4*self.bb.width(), 4*self.bb.height()), QImage.Format_ARGB32_Premultiplied) #TODO: format
tempi.fill(0)
painter = QPainter(tempi)
# Offset the source window. At first I thought the right offset was 0.5, because
# that would seem to make sure points are rounded to pixel CENTERS, but
# experimentation indicates that 0.25 is slightly better for some reason...
source_rect = QRectF( QPointF(self.bb.x()+0.25, self.bb.y()+0.25),
QSizeF(self.bb.width(), self.bb.height()) )
target_rect = QRectF( QPointF(0,0),
QSizeF(4*self.bb.width(), 4*self.bb.height()) )
self.scene.render(painter, target=target_rect, source=source_rect)
painter.end()
# Now downsample: convert each 4x4 patch into a single pixel by summing and dividing
ndarr = qimage2ndarray.rgb_view(tempi)[:,:,0].astype(int)
ndarr = ndarr.reshape( (ndarr.shape[0],) + (ndarr.shape[1]//4,) + (4,) )
ndarr = ndarr.sum(axis=-1)
ndarr = ndarr.transpose()
ndarr = ndarr.reshape( (ndarr.shape[0],) + (ndarr.shape[1]//4,) + (4,) )
ndarr = ndarr.sum(axis=-1)
ndarr = ndarr.transpose()
ndarr //= 4*4
downsample_threshold = (7./16)*255
labels = numpy.where(ndarr>=downsample_threshold, numpy.uint8(self.drawnNumber), numpy.uint8(0))
labels = labels.swapaxes(0,1)
assert labels.shape[0] == self.bb.width()
assert labels.shape[1] == self.bb.height()
##
## ensure that at least one pixel is label when the brush size is 1
##
## this happens when the user just clicked without moving
## in that case the lineitem will be so tiny, that it won't be rendered
## into a single pixel by the code above
if not has_moved and self.brushSize <= 1 and numpy.count_nonzero(labels) == 0:
labels[labels.shape[0]//2, labels.shape[1]//2] = self.drawnNumber
self.brushStrokeAvailable.emit(QPointF(self.bb.x(), self.bb.y()), labels)
def dumpDraw(self, pos):
res = self.endDrawing(pos)
self.beginDrawing(pos, self.sliceRect)
return res
def moveTo(self, pos):
#data coordinates
oldX, oldY = self.pos.x(), self.pos.y()
x,y = pos.x(), pos.y()
line = QGraphicsLineItem(oldX, oldY, x, y)
line.setPen(QPen( QBrush(Qt.white), self.brushSize, Qt.SolidLine, Qt.RoundCap, Qt.RoundJoin))
self.scene.addItem(line)
self._hasMoved = True
#update bounding Box
if not self.bb.isValid():
self.bb = QRect(QPoint(oldX,oldY), QSize(1,1))
#grow bounding box
self.bb.setLeft( min(self.bb.left(), max(0, x-self.brushSize//2-1) ) )
self.bb.setRight( max(self.bb.right(), min(self.sliceRect[0]-1, x+self.brushSize//2+1) ) )
self.bb.setTop( min(self.bb.top(), max(0, y-self.brushSize//2-1) ) )
self.bb.setBottom(max(self.bb.bottom(), min(self.sliceRect[1]-1, y+self.brushSize//2+1) ) )
#update/move position
self.pos = pos
class BrushingModel(QObject):
brushSizeChanged = pyqtSignal(int)
brushColorChanged = pyqtSignal(QColor)
brushStrokeAvailable = pyqtSignal(QPointF, object)
drawnNumberChanged = pyqtSignal(int)
minBrushSize = 1
maxBrushSize = 61
defaultBrushSize = 3
defaultDrawnNumber = 1
defaultColor = Qt.white
erasingColor = Qt.black
erasingNumber = 100
def __init__(self, parent=None):
QObject.__init__(self, parent=parent)
self.sliceRect = None
self.bb = QRect() #bounding box enclosing the drawing
self.brushSize = self.defaultBrushSize
self.drawColor = self.defaultColor
self._temp_color = None
self._temp_number = None
self.drawnNumber = self.defaultDrawnNumber
self.pos = None
self.erasing = False
self._hasMoved = False
self.drawOnto = None
#an empty scene, where we add all drawn line segments
#a QGraphicsLineItem, and which we can use to then
#render to an image
self.scene = QGraphicsScene()
def toggleErase(self):
self.erasing = not (self.erasing)
if self.erasing:
self.setErasing()
else:
self.disableErasing()
def setErasing(self):
self.erasing = True
self._temp_color = self.drawColor
self._temp_number = self.drawnNumber
self.setBrushColor(self.erasingColor)
self.brushColorChanged.emit(self.erasingColor)
self.setDrawnNumber(self.erasingNumber)
def disableErasing(self):
self.erasing = False
self.setBrushColor(self._temp_color)
self.brushColorChanged.emit(self.drawColor)
self.setDrawnNumber(self._temp_number)
def setBrushSize(self, size):
self.brushSize = size
self.brushSizeChanged.emit(self.brushSize)
def setDrawnNumber(self, num):
self.drawnNumber = num
self.drawnNumberChanged.emit(num)
def getBrushSize(self):
return self.brushSize
def brushSmaller(self):
b = self.brushSize
if b > self.minBrushSize:
self.setBrushSize(b - 1)
def brushBigger(self):
b = self.brushSize
if self.brushSize < self.maxBrushSize:
self.setBrushSize(b + 1)
def setBrushColor(self, color):
self.drawColor = color
self.brushColorChanged.emit(self.drawColor)
def beginDrawing(self, pos, sliceRect):
'''
pos -- QPointF-like
'''
self.sliceRect = sliceRect
self.scene.clear()
self.bb = QRect()
self.pos = QPointF(pos.x(), pos.y())
self._hasMoved = False
def endDrawing(self, pos):
has_moved = self._hasMoved # _hasMoved will change after calling moveTo
if has_moved:
self.moveTo(pos)
else:
assert (self.pos == pos)
self.moveTo(QPointF(pos.x() + 0.0001,
pos.y() + 0.0001)) # move a little
tempi = QImage(QSize(self.bb.width(), self.bb.height()),
QImage.Format_ARGB32_Premultiplied) #TODO: format
tempi.fill(0)
painter = QPainter(tempi)
self.scene.render(painter,
target=QRectF(),
source=QRectF(
QPointF(self.bb.x(), self.bb.y()),
QSizeF(self.bb.width(), self.bb.height())))
painter.end()
ndarr = qimage2ndarray.rgb_view(tempi)[:, :, 0]
labels = numpy.where(ndarr > 0, numpy.uint8(self.drawnNumber),
numpy.uint8(0))
labels = labels.swapaxes(0, 1)
assert labels.shape[0] == self.bb.width()
assert labels.shape[1] == self.bb.height()
##
## ensure that at least one pixel is label when the brush size is 1
##
## this happens when the user just clicked without moving
## in that case the lineitem will be so tiny, that it won't be rendered
## into a single pixel by the code above
if not has_moved and self.brushSize <= 1 and numpy.count_nonzero(
labels) == 0:
labels[labels.shape[0] // 2,
labels.shape[1] // 2] = self.drawnNumber
self.brushStrokeAvailable.emit(QPointF(self.bb.x(), self.bb.y()),
labels)
def dumpDraw(self, pos):
res = self.endDrawing(pos)
self.beginDrawing(pos, self.sliceRect)
return res
def moveTo(self, pos):
#data coordinates
oldX, oldY = self.pos.x(), self.pos.y()
x, y = pos.x(), pos.y()
line = QGraphicsLineItem(oldX, oldY, x, y)
line.setPen(
QPen(QBrush(Qt.white), self.brushSize, Qt.SolidLine, Qt.RoundCap,
Qt.RoundJoin))
self.scene.addItem(line)
self._hasMoved = True
#update bounding Box
if not self.bb.isValid():
self.bb = QRect(QPoint(oldX, oldY), QSize(1, 1))
#grow bounding box
self.bb.setLeft(min(self.bb.left(), max(0,
x - self.brushSize / 2 - 1)))
self.bb.setRight(
max(self.bb.right(),
min(self.sliceRect[0] - 1, x + self.brushSize / 2 + 1)))
self.bb.setTop(min(self.bb.top(), max(0, y - self.brushSize / 2 - 1)))
self.bb.setBottom(
max(self.bb.bottom(),
min(self.sliceRect[1] - 1, y + self.brushSize / 2 + 1)))
#update/move position
self.pos = pos
def paintEvent(self, e):
""" """
PKWidget.paintEvent(self, e)
painter = QPainter(self)
orig_pen = QPen(painter.pen())
orig_brush = QBrush(painter.brush())
orig_font = QFont(painter.font())
metrics = painter.fontMetrics()
f_height = metrics.ascent()
text_flags = Qt.AlignHCenter | Qt.AlignVCenter
region = e.region()
for item in self._shown:
font_y = item.y + item.height / 2 + f_height / 2
item_rect = QRect(0, item.y, self.width(), item.height)
if not region.contains(item_rect):
continue
painter.setFont(orig_font)
# background
pen = item.color().dark(110)
pen.setAlpha(100)
painter.setBrush(QBrush(item.color()))
painter.setPen(QPen(pen))
w = self.width() * (item.progress * .01)
rect = QRect(0, item.y, w, item.height)
painter.drawRect(rect)
# queue pos
pen = pen.dark(140)
pen.setAlpha(255)
painter.setPen(QPen(pen))
queue_rect = QRect(self.padding, item.y + self.padding,
item.height - self.padding * 2,
item.height - self.padding * 2)
painter.drawRoundRect(queue_rect, 35, 35)
# num
if not item.num is None:
painter.setPen(orig_pen)
painter.setBrush(orig_brush)
painter.drawText(queue_rect, text_flags, str(item.num))
# text
painter.setPen(orig_pen)
painter.setBrush(orig_brush)
font = QFont('Utopia, Italic', 14, -1, True)
painter.setFont(font)
rect = QRect(item_rect)
rect.setX(item.height + self.padding * 2)
rect.setWidth(rect.width() - rect.x())
painter.drawText(rect, Qt.AlignVCenter | Qt.AlignLeft, item.text)
# state
if item.state:
font = QFont('7th Service Expanded Italic, Italic')
font.setPointSize(18)
pen = QColor(orig_pen.color())
pen.setAlpha(50)
painter.setPen(QPen(pen))
painter.setFont(font)
x = item.x
y = item.y
w = self.width()
h = item.height
rect = QRect(x, y, w, h)
flags = Qt.AlignVCenter | Qt.AlignRight
painter.drawText(rect, flags, item.state+' ')
class BrushingModel(QObject):
brushSizeChanged = pyqtSignal(int)
brushColorChanged = pyqtSignal(QColor)
brushStrokeAvailable = pyqtSignal(QPointF, object)
drawnNumberChanged = pyqtSignal(int)
minBrushSize = 1
maxBrushSize = 61
defaultBrushSize = 3
defaultDrawnNumber = 1
defaultColor = Qt.white
erasingColor = Qt.black
erasingNumber = 100
def __init__(self, parent=None):
QObject.__init__(self, parent=parent)
self.sliceRect = None
self.bb = QRect() #bounding box enclosing the drawing
self.brushSize = self.defaultBrushSize
self.drawColor = self.defaultColor
self._temp_color = None
self._temp_number = None
self.drawnNumber = self.defaultDrawnNumber
self.pos = None
self.erasing = False
self._hasMoved = False
self.drawOnto = None
#an empty scene, where we add all drawn line segments
#a QGraphicsLineItem, and which we can use to then
#render to an image
self.scene = QGraphicsScene()
def toggleErase(self):
self.erasing = not (self.erasing)
if self.erasing:
self.setErasing()
else:
self.disableErasing()
def setErasing(self):
self.erasing = True
self._temp_color = self.drawColor
self._temp_number = self.drawnNumber
self.setBrushColor(self.erasingColor)
self.brushColorChanged.emit(self.erasingColor)
self.setDrawnNumber(self.erasingNumber)
def disableErasing(self):
self.erasing = False
self.setBrushColor(self._temp_color)
self.brushColorChanged.emit(self.drawColor)
self.setDrawnNumber(self._temp_number)
def setBrushSize(self, size):
self.brushSize = size
self.brushSizeChanged.emit(self.brushSize)
def setDrawnNumber(self, num):
self.drawnNumber = num
self.drawnNumberChanged.emit(num)
def getBrushSize(self):
return self.brushSize
def brushSmaller(self):
b = self.brushSize
if b > self.minBrushSize:
self.setBrushSize(b - 1)
def brushBigger(self):
b = self.brushSize
if self.brushSize < self.maxBrushSize:
self.setBrushSize(b + 1)
def setBrushColor(self, color):
self.drawColor = color
self.brushColorChanged.emit(self.drawColor)
def beginDrawing(self, pos, sliceRect):
'''
pos -- QPointF-like
'''
self.sliceRect = sliceRect
self.scene.clear()
self.bb = QRect()
self.pos = QPointF(pos.x(), pos.y())
self._hasMoved = False
def endDrawing(self, pos):
has_moved = self._hasMoved # _hasMoved will change after calling moveTo
if has_moved:
self.moveTo(pos)
else:
assert (self.pos == pos)
self.moveTo(QPointF(pos.x() + 0.0001,
pos.y() + 0.0001)) # move a little
# Qt seems to use strange rules for determining which pixels to set when rendering a brush stroke to a QImage.
# We seem to get better results if we do the following:
# 1) Slightly offset the source window because apparently there is a small shift in the data
# 2) Render the scene to an image that is MUCH larger than the scene resolution (4x by 4x)
# 3) Downsample each 4x4 patch from the large image back to a single pixel in the final image,
# applying some threshold to determine if the final pixel is on or off.
tempi = QImage(QSize(4 * self.bb.width(), 4 * self.bb.height()),
QImage.Format_ARGB32_Premultiplied) #TODO: format
tempi.fill(0)
painter = QPainter(tempi)
# Offset the source window. At first I thought the right offset was 0.5, because
# that would seem to make sure points are rounded to pixel CENTERS, but
# experimentation indicates that 0.25 is slightly better for some reason...
source_rect = QRectF(QPointF(self.bb.x() + 0.25,
self.bb.y() + 0.25),
QSizeF(self.bb.width(), self.bb.height()))
target_rect = QRectF(QPointF(0, 0),
QSizeF(4 * self.bb.width(), 4 * self.bb.height()))
self.scene.render(painter, target=target_rect, source=source_rect)
painter.end()
# Now downsample: convert each 4x4 patch into a single pixel by summing and dividing
ndarr = qimage2ndarray.rgb_view(tempi)[:, :, 0].astype(int)
ndarr = ndarr.reshape((ndarr.shape[0], ) + (ndarr.shape[1] // 4, ) +
(4, ))
ndarr = ndarr.sum(axis=-1)
ndarr = ndarr.transpose()
ndarr = ndarr.reshape((ndarr.shape[0], ) + (ndarr.shape[1] // 4, ) +
(4, ))
ndarr = ndarr.sum(axis=-1)
ndarr = ndarr.transpose()
ndarr //= 4 * 4
downsample_threshold = (7. / 16) * 255
labels = numpy.where(ndarr >= downsample_threshold,
numpy.uint8(self.drawnNumber), numpy.uint8(0))
labels = labels.swapaxes(0, 1)
assert labels.shape[0] == self.bb.width()
assert labels.shape[1] == self.bb.height()
##
## ensure that at least one pixel is label when the brush size is 1
##
## this happens when the user just clicked without moving
## in that case the lineitem will be so tiny, that it won't be rendered
## into a single pixel by the code above
if not has_moved and self.brushSize <= 1 and numpy.count_nonzero(
labels) == 0:
labels[labels.shape[0] // 2,
labels.shape[1] // 2] = self.drawnNumber
self.brushStrokeAvailable.emit(QPointF(self.bb.x(), self.bb.y()),
labels)
def dumpDraw(self, pos):
res = self.endDrawing(pos)
self.beginDrawing(pos, self.sliceRect)
return res
def moveTo(self, pos):
#data coordinates
oldX, oldY = self.pos.x(), self.pos.y()
x, y = pos.x(), pos.y()
line = QGraphicsLineItem(oldX, oldY, x, y)
line.setPen(
QPen(QBrush(Qt.white), self.brushSize, Qt.SolidLine, Qt.RoundCap,
Qt.RoundJoin))
self.scene.addItem(line)
self._hasMoved = True
#update bounding Box
if not self.bb.isValid():
self.bb = QRect(QPoint(oldX, oldY), QSize(1, 1))
#grow bounding box
self.bb.setLeft(
min(self.bb.left(), max(0, x - self.brushSize // 2 - 1)))
self.bb.setRight(
max(self.bb.right(),
min(self.sliceRect[0] - 1, x + self.brushSize // 2 + 1)))
self.bb.setTop(min(self.bb.top(), max(0, y - self.brushSize // 2 - 1)))
self.bb.setBottom(
max(self.bb.bottom(),
min(self.sliceRect[1] - 1, y + self.brushSize // 2 + 1)))
#update/move position
self.pos = pos
class XSnapshotWidget(QWidget):
def __init__(self, parent=None):
super(XSnapshotWidget, self).__init__(parent)
# define custom properties
self._region = QRect()
self._filepath = ''
# define custom properties
palette = self.palette()
palette.setColor(palette.Window, QColor('white'))
self.setPalette(palette)
self.setWindowOpacity(0.5)
self.setWindowFlags(Qt.SplashScreen)
self.setFocus()
def accept(self):
"""
Prompts the user for the filepath to save and then saves the image.
"""
filetypes = 'PNG Files (*.png);;JPG Files (*.jpg);;All Files (*.*)'
filename = QFileDialog.getSaveFileName(None, 'Save Snapshot',
self.filepath(), filetypes)
if type(filename) == tuple:
filename = filename[0]
filename = str(filename)
if not filename:
self.reject()
else:
self.setFilepath(filename)
self.save()
def filepath(self):
"""
Returns the filepath that is going to be asved for this snapshot widget.
:return <str>
"""
return self._filepath
def hideWindow(self):
"""
Sets the window to hide/show while taking the snapshot.
:param window | <QMainWindow> || <QDialog>
"""
return self._hideWindow
def keyPressEvent(self, event):
"""
Listens for the escape key to cancel out from this snapshot.
:param event | <QKeyPressEvent>
"""
# reject on a cancel
if event.key() == Qt.Key_Escape:
self.reject()
super(XSnapshotWidget, self).keyPressEvent(event)
def mousePressEvent(self, event):
"""
Starts the selection process for this widget and snapshot area.
:param event | <QMousePressEvent>
"""
self._region.setX(event.pos().x())
self._region.setY(event.pos().y())
super(XSnapshotWidget, self).mousePressEvent(event)
def mouseMoveEvent(self, event):
"""
Drags the selection view for this widget.
:param event | <QMouseMoveEvent>
"""
w = event.pos().x() - self._region.x()
h = event.pos().y() - self._region.y()
self._region.setWidth(w)
self._region.setHeight(h)
self.repaint()
super(XSnapshotWidget, self).mouseMoveEvent(event)
def mouseReleaseEvent(self, event):
"""
Finishes the selection event.
:param event | <QMouseReleaseEvent>
"""
self.accept()
super(XSnapshotWidget, self).mouseReleaseEvent(event)
def paintEvent(self, event):
"""
Handles the drawing for this widget and its selection region.
:param event | <QPaintEvent>
"""
pen = QPen(Qt.DashLine)
pen.setColor(QColor('red'))
painter = QPainter(self)
painter.setPen(pen)
clr = QColor('black')
clr.setAlpha(100)
painter.setBrush(clr)
painter.drawRect(self._region)
def reject(self):
"""
Rejects the snapshot and closes the widget.
"""
if self.hideWindow():
self.hideWindow().show()
self.close()
self.deleteLater()
def region(self):
"""
Returns the selection region defined by the rectangle for snapshoting.
:return <QRect>
"""
return self._region
def save(self):
"""
Saves the snapshot based on the current region.
"""
# close down the snapshot widget
if self.hideWindow():
self.hideWindow().hide()
self.hide()
QApplication.processEvents()
time.sleep(1)
# create the pixmap to save
wid = QApplication.desktop().winId()
if not self._region.isNull():
x = self._region.x()
y = self._region.y()
w = self._region.width()
h = self._region.height()
else:
x = self.x()
y = self.y()
w = self.width()
h = self.height()
pixmap = QPixmap.grabWindow(wid, x, y, w, h)
pixmap.save(self.filepath())
self.close()
self.deleteLater()
if self.hideWindow():
self.hideWindow().show()
def show(self):
"""
Shows this widget and hides the specified window if necessary.
"""
super(XSnapshotWidget, self).show()
if self.hideWindow():
self.hideWindow().hide()
QApplication.processEvents()
def setFilepath(self, filepath):
"""
Sets the filepath that will be saved for this snapshot.
:param filepath | <str>
"""
self._filepath = filepath
def setHideWindow(self, window):
"""
Sets the window that will be hidden while this snapshot is being
taken.
:param window | <QMainWindow>
"""
self._hideWindow = window
def setRegion(self, rect):
"""
Sets the region rectangle to the inputed rect.
:param rect | <QRect>
"""
if rect is not None:
self._region = rect
@staticmethod
def capture(rect=None, filepath='', prompt=True, hideWindow=None):
"""
Prompts the user to capture the screen.
:param rect | <QRect>
filepath | <str>
prompt | <bool>
:return (<str> filepath, <bool> accepted)
"""
widget = XSnapshotWidget(QApplication.desktop())
widget.setRegion(rect)
widget.setHideWindow(hideWindow)
widget.setFilepath(filepath)
widget.move(1, 1)
widget.resize(QApplication.desktop().size())
if prompt or not filepath:
widget.show()
else:
widget.save()
def paintEvent(self, event):
QWidget.paintEvent(self, event)
width, height = self.width(), self.height()
polygon = QPolygon()
for i, rate in enumerate(self.loads):
x = width - i * self.pointDistance
y = height - rate * height
if x < self.boxWidth:
break
polygon.append(QPoint(x, y))
painter = QPainter(self)
pen = QPen()
pen.setColor(Qt.darkGreen)
painter.setPen(pen)
painter.setRenderHint(QPainter.Antialiasing, True)
#画网格
painter.setOpacity(0.5)
gridSize = self.pointDistance * 4
deltaX = (width - self.boxWidth) % gridSize + self.boxWidth
deltaY = height % gridSize
for i in range(int(width / gridSize)):
x = deltaX + gridSize * i
painter.drawLine(x, 0, x, height)
for j in range(int(height / gridSize)):
y = j * gridSize + deltaY
painter.drawLine(self.boxWidth, y, width, y)
#画折线
pen.setColor(Qt.darkCyan)
pen.setWidth(2)
painter.setPen(pen)
painter.setOpacity(1)
painter.drawPolyline(polygon)
#画展示框
if len(self.loads) > 0:
rate = self.loads[0]
else:
rate = 1.0
rect1 = QRect(4, height * 0.05, self.boxWidth - 9, height * 0.7)
rect2 = QRect(4, height * 0.8, self.boxWidth - 9, height * 0.2)
centerX = int(rect1.width() / 2) + 1
pen.setWidth(1)
for i in range(rect1.height()):
if i % 4 == 0:
continue
if (rect1.height() - i) / rect1.height() > rate:
pen.setColor(Qt.darkGreen)
else:
pen.setColor(Qt.green)
painter.setPen(pen)
for j in range(rect1.width()):
if centerX - 1 <= j <= centerX + 1:
continue
painter.drawPoint(rect1.x() + j, rect1.y() + i)
pen.setColor(Qt.black)
painter.setPen(pen)
painter.drawText(rect2, Qt.AlignHCenter | Qt.AlignVCenter, str(int(rate * 100)) + "%")