def paintEvent(self, event):
# We need to preserve aspect ratio. Figure out bounding box for
# webcam image.
im_dx = self._image.width()
im_dy = self._image.height()
im_ratio = im_dx / float(im_dy)
wi_dx = self.width()
wi_dy = self.height()
wi_ratio = wi_dx / float(wi_dy)
if wi_ratio > im_ratio: # Need to pad on sides
xmin = wi_dx / 2. - wi_dy / 2. * im_ratio
ymin = 0.
width = wi_dy * im_ratio
height = wi_dy
else: # Need to pad on top/bottom
xmin = 0.
ymin = wi_dy / 2. - wi_dx / 2. / float(im_ratio)
width = wi_dx
height = wi_dx / float(im_ratio)
painter = QtGui.QPainter(self)
painter.drawImage(QtCore.QRect(xmin, ymin, width, height), self._image)
def paintEvent(self, event):
# draw the zoom rectangle more prominently
try:
drawRect = self.drawRect
self.drawRect = False
except AttributeError: # mpl 1.4
drawRect = self._drawRect
self._drawRect = None
# super needs this
if self.renderer is None:
self.renderer = self.get_renderer()
super(MplCanvas, self).paintEvent(event)
if drawRect:
try:
x, y, w, h = self.rect[0], self.rect[1], self.rect[
2], self.rect[3]
except TypeError: # mpl 1.4
x, y, w, h = drawRect
p = QtGui.QPainter(self)
p.setPen(QtGui.QPen(Qt.red, 2, Qt.DotLine))
p.drawRect(x, y, w, h)
p.end()
if self.roi_callback is not None:
self.roi_callback(self)
def paintEvent(self, event):
super(GlueMdiArea, self).paintEvent(event)
painter = QtGui.QPainter(self.viewport())
painter.setPen(QtGui.QColor(210, 210, 210))
font = painter.font()
font.setPointSize(48)
font.setWeight(font.Black)
painter.setFont(font)
rect = self.contentsRect()
painter.drawText(rect, Qt.AlignHCenter | Qt.AlignVCenter,
"Drag Data To Plot")
def status_pixmap(attention=False):
"""
A small icon to grab attention
:param attention: If True, return attention-grabbing pixmap
"""
color = Qt.red if attention else Qt.lightGray
pm = QtGui.QPixmap(15, 15)
p = QtGui.QPainter(pm)
b = QtGui.QBrush(color)
p.fillRect(-1, -1, 20, 20, b)
return pm
def get_painter(self, canvas):
p = QtGui.QPainter(canvas)
facecolor = mpl_to_qt4_color(self.plot_opts['facecolor'],
self.plot_opts['alpha'])
edgecolor = mpl_to_qt4_color(self.plot_opts['edgecolor'],
self.plot_opts['alpha'])
pen = QtGui.QPen(edgecolor)
pen.setWidth(self.plot_opts.get('edgewidth', 0))
p.setPen(pen)
p.setBrush(QtGui.QBrush(facecolor))
return p
