def configure_window(self, width, height):
self.logger.debug("window size reconfigured to %dx%d" %
(width, height))
if hasattr(self, 'scene'):
# By default, a QGraphicsView comes with a 1-pixel margin
# You will get scrollbars unless you account for this
# See http://stackoverflow.com/questions/3513788/qt-qgraphicsview-without-scrollbar
width, height = width - 2, height - 2
self.scene.setSceneRect(1, 1, width - 2, height - 2)
# tell renderer about our new size
self.renderer.resize((width, height))
if isinstance(self.renderer.surface, QPixmap):
# optimization when Qt is used as the renderer:
# renderer surface is already a QPixmap
self.pixmap = self.renderer.surface
self.imgwin.set_pixmap(self.pixmap)
else:
# If we need to build a new pixmap do it here. We allocate one
# twice as big as necessary to prevent having to reinstantiate it
# all the time. On Qt this causes unpleasant flashing in the display.
if ((self.pixmap is None) or (self.pixmap.width() < width)
or (self.pixmap.height() < height)):
pixmap = QPixmap(width * 2, height * 2)
self.pixmap = pixmap
self.imgwin.set_pixmap(pixmap)
self.configure(width, height)
def resize(self, dims):
"""Resize our drawing area to encompass a space defined by the
given dimensions.
"""
width, height = dims[:2]
self.logger.debug("renderer reconfigured to %dx%d" % (width, height))
if self.surface_type == 'qpixmap':
self.surface = QPixmap(width, height)
else:
self.surface = QImage(width, height, self.qimg_fmt)
def configure(self, width, height):
self.logger.debug("window size reconfigured to %dx%d" %
(width, height))
if hasattr(self, 'scene'):
self.scene.setSceneRect(0, 0, width, height)
# If we need to build a new pixmap do it here. We allocate one
# twice as big as necessary to prevent having to reinstantiate it
# all the time. On Qt this causes unpleasant flashing in the display.
if (self.pixmap == None) or (self.pixmap.width() < width) or \
(self.pixmap.height() < height):
pixmap = QPixmap(width * 2, height * 2)
#pixmap.fill(QColor("black"))
self.pixmap = pixmap
self.imgwin.set_pixmap(pixmap)
self.set_window_size(width, height, redraw=True)
def resizeEvent(self, event):
width, height = self.get_size()
#print "making pixmap of %dx%d" % (width, height)
pixmap = QPixmap(width, height)
#pixmap.fill(QColor("black"))
self.pixmap = pixmap
# calculate intervals for range numbers
nums = max(int(width // self._avg_pixels_per_range_num), 1)
spacing = 256 // nums
self._interval = {}
for i in range(nums):
self._interval[i * spacing] = True
self.logger.debug("nums=%d spacing=%d intervals=%s" %
(nums, spacing, self._interval))
self.redraw()
def resize(self, dims):
"""Resize our drawing area to encompass a space defined by the
given dimensions.
"""
width, height = dims[:2]
self.logger.debug("renderer reconfigured to %dx%d" % (width, height))
if self.surface_type == 'qpixmap':
self.surface = QPixmap(width, height)
else:
self.surface = QImage(width, height, self.qimg_fmt)
# fill surface with background color;
# this reduces unwanted garbage in the resizing window
painter = QPainter(self.surface)
size = self.surface.size()
sf_wd, sf_ht = size.width(), size.height()
bg = self.viewer.img_bg
bgclr = self._get_color(*bg)
painter.fillRect(QtCore.QRect(0, 0, sf_wd, sf_ht), bgclr)
def configure_window(self, width, height):
self.logger.debug("window size reconfigured to %dx%d" %
(width, height))
if hasattr(self, 'scene'):
# By default, a QGraphicsView comes with a 1-pixel margin
# You will get scrollbars unless you account for this
# See http://stackoverflow.com/questions/3513788/qt-qgraphicsview-without-scrollbar
width, height = width - 2, height - 2
self.scene.setSceneRect(1, 1, width - 2, height - 2)
# If we need to build a new pixmap do it here. We allocate one
# twice as big as necessary to prevent having to reinstantiate it
# all the time. On Qt this causes unpleasant flashing in the display.
if (self.pixmap is None) or (self.pixmap.width() < width) or \
(self.pixmap.height() < height):
pixmap = QPixmap(width * 2, height * 2)
#pixmap.fill(QColor("black"))
self.pixmap = pixmap
self.imgwin.set_pixmap(pixmap)
self.configure(width, height)
def make_cursor(iconpath, x, y):
image = QImage()
image.load(iconpath)
pm = QPixmap(image)
return QCursor(pm, x, y)
