def __init__(self, viewer=None, width=600, height=600):
super(GingaViewerWidget, self).__init__()
if viewer is None:
viewer = CanvasView(logger)
self.logger = viewer.logger
self.viewer = viewer
self.widget = viewer.get_widget()
def __init__(self, viewer=None, width=600, height=600):
super(GingaViewerWidget, self).__init__()
if viewer is None:
viewer = CanvasView(logger)
self.logger = viewer.logger
self.viewer = viewer
self.widget = viewer.get_widget()
def __init__(self, viewer=None, width=600, height=600):
super(GingaScrolledViewerWidget, self).__init__()
if viewer is None:
viewer = CanvasView()
self.logger = viewer.logger
self.viewer = viewer
self.widget = ScrolledView(viewer)
def __init__(self,panel_name,ui, logger, row, col, drow, dcol, autocut_params='stddev'):
#super(image_panel, self).__init__()
# enable some user interaction
#fi.get_bindings.enable_all(True)
self.logger = logger
self.ui = ui
self.dc = get_canvas_types()
fi = CanvasView(self.logger, render='widget')
fi.enable_autocuts('on')
fi.set_autocut_params(autocut_params)
#fi.set_autocut_params('stddev')
fi.enable_autozoom('on')
#fi.set_callback('drag-drop', self.drop_file)
#fi.set_callback('none-move',self.cursor_cb)
fi.set_bg(0.2, 0.2, 0.2)
fi.ui_set_active(True)
fi.show_focus_indicator(True)
self.fitsimage = fi
bd = fi.get_bindings()
bd.enable_all(True)
self.cutout = fi.get_widget()
self.ui.cutoutsLayout.addWidget(self.cutout, row, col, drow, dcol)
self.fitsimage = fi
canvas = self.dc.DrawingCanvas()
canvas.enable_draw(True)
canvas.enable_edit(True)
canvas.set_drawtype('rectangle', color='lightblue')
canvas.set_surface(fi)
#canvas.rectangle(.5,.5,10,0)
self.canvas = canvas
# add canvas to view
#fi.add(canvas)
private_canvas = fi.get_canvas()
private_canvas.add(canvas)
canvas.register_for_cursor_drawing(fi)
#canvas.add_callback('draw-event', self.draw_cb)
canvas.set_draw_mode('draw')
canvas.ui_set_active(True)
self.canvas = canvas
self.drawtypes = canvas.get_drawtypes()
self.drawtypes.sort()
def __init__(self, logger):
super(FitsViewer, self).__init__()
self.logger = logger
self.drawcolors = colors.get_colors()
self.dc = get_canvas_types()
fi = CanvasView(logger, render='widget')
fi.enable_autocuts('on')
fi.set_autocut_params('zscale')
fi.enable_autozoom('on')
fi.set_zoom_algorithm('rate')
fi.set_zoomrate(1.4)
#fi.show_pan_mark(True)
#fi.enable_draw(False)
fi.add_callback('drag-drop', self.drop_file_cb)
fi.add_callback('cursor-changed', self.cursor_cb)
fi.set_bg(0.2, 0.2, 0.2)
fi.ui_set_active(True)
self.fitsimage = fi
bd = fi.get_bindings()
bd.enable_all(True)
# canvas that we will draw on
canvas = self.dc.DrawingCanvas()
canvas.enable_draw(True)
canvas.enable_edit(True)
canvas.set_drawtype('rectangle', color='lightblue')
canvas.set_surface(fi)
self.canvas = canvas
# add canvas to view
#fi.add(canvas)
private_canvas = fi.get_canvas()
private_canvas.add(canvas)
canvas.register_for_cursor_drawing(fi)
canvas.add_callback('draw-event', self.draw_cb)
canvas.set_draw_mode('draw')
canvas.ui_set_active(True)
self.drawtypes = canvas.get_drawtypes()
self.drawtypes.sort()
# add a color bar
#fi.show_color_bar(True)
fi.show_focus_indicator(True)
# add little mode indicator that shows keyboard modal states
fi.show_mode_indicator(True, corner='ur')
w = fi.get_widget()
w.resize(512, 512)
vbox = QtGui.QVBoxLayout()
vbox.setContentsMargins(QtCore.QMargins(2, 2, 2, 2))
vbox.setSpacing(1)
vbox.addWidget(w, stretch=1)
self.readout = QtGui.QLabel("")
vbox.addWidget(self.readout,
stretch=0,
alignment=QtCore.Qt.AlignCenter)
hbox = QtGui.QHBoxLayout()
hbox.setContentsMargins(QtCore.QMargins(4, 2, 4, 2))
wdrawtype = QtGui.QComboBox()
for name in self.drawtypes:
wdrawtype.addItem(name)
index = self.drawtypes.index('rectangle')
wdrawtype.setCurrentIndex(index)
wdrawtype.activated.connect(self.set_drawparams)
self.wdrawtype = wdrawtype
wdrawcolor = QtGui.QComboBox()
for name in self.drawcolors:
wdrawcolor.addItem(name)
index = self.drawcolors.index('lightblue')
wdrawcolor.setCurrentIndex(index)
wdrawcolor.activated.connect(self.set_drawparams)
self.wdrawcolor = wdrawcolor
wfill = QtGui.QCheckBox("Fill")
wfill.stateChanged.connect(self.set_drawparams)
self.wfill = wfill
walpha = QtGui.QDoubleSpinBox()
walpha.setRange(0.0, 1.0)
walpha.setSingleStep(0.1)
walpha.setValue(1.0)
walpha.valueChanged.connect(self.set_drawparams)
self.walpha = walpha
wclear = QtGui.QPushButton("Clear Canvas")
wclear.clicked.connect(self.clear_canvas)
wopen = QtGui.QPushButton("Open File")
wopen.clicked.connect(self.open_file)
wquit = QtGui.QPushButton("Quit")
wquit.clicked.connect(self.quit)
hbox.addStretch(1)
for w in (wopen, wdrawtype, wdrawcolor, wfill, QtGui.QLabel('Alpha:'),
walpha, wclear, wquit):
hbox.addWidget(w, stretch=0)
hw = QtGui.QWidget()
hw.setLayout(hbox)
vbox.addWidget(hw, stretch=0)
mode = self.canvas.get_draw_mode()
hbox = QtGui.QHBoxLayout()
hbox.setContentsMargins(QtCore.QMargins(4, 2, 4, 2))
btn1 = QtGui.QRadioButton("Draw")
btn1.setChecked(mode == 'draw')
btn1.toggled.connect(lambda val: self.set_mode_cb('draw', val))
btn1.setToolTip("Choose this to draw on the canvas")
hbox.addWidget(btn1)
btn2 = QtGui.QRadioButton("Edit")
btn2.setChecked(mode == 'edit')
btn2.toggled.connect(lambda val: self.set_mode_cb('edit', val))
btn2.setToolTip("Choose this to edit things on the canvas")
hbox.addWidget(btn2)
btn3 = QtGui.QRadioButton("Pick")
btn3.setChecked(mode == 'pick')
btn3.toggled.connect(lambda val: self.set_mode_cb('pick', val))
btn3.setToolTip("Choose this to pick things on the canvas")
hbox.addWidget(btn3)
hbox.addWidget(QtGui.QLabel(''), stretch=1)
hw = QtGui.QWidget()
hw.setLayout(hbox)
vbox.addWidget(hw, stretch=0)
vw = QtGui.QWidget()
self.setCentralWidget(vw)
vw.setLayout(vbox)
def __init__(self, logger):
super(FitsViewer, self).__init__()
self.logger = logger
self.cachedFiles = None
self.scanning = False
#KTL stuff
#Cache KTL keywords
self.trickxpos = ktl.cache('ao', 'TRKRO1XP')
self.trickypos = ktl.cache('ao', 'TRKRO1YP')
self.trickxsize = ktl.cache('ao', 'TRKRO1XS')
self.trickysize = ktl.cache('ao', 'TRKRO1YS')
self.rawfile = ''
self.threadpool = QtCore.QThreadPool()
self.iqcalc = iqcalc.IQCalc(self.logger)
# create the ginga viewer and configure it
fi = CanvasView(self.logger, render='widget')
fi.enable_autocuts('on')
fi.set_autocut_params('zscale')
fi.enable_autozoom('on')
# fi.set_callback('drag-drop', self.drop_file)
fi.set_bg(0.2, 0.2, 0.2)
fi.ui_set_active(True)
self.fitsimage = fi
# enable some user interaction
self.bd = fi.get_bindings()
self.bd.enable_all(True)
w = fi.get_widget()
w.resize(512, 512)
# add scrollbar interface around this viewer
si = ScrolledView(fi)
vbox = QtGui.QVBoxLayout()
vbox.setContentsMargins(QtCore.QMargins(2, 2, 2, 2))
vbox.setSpacing(1)
vbox.addWidget(si, stretch=1)
hbox = QtGui.QHBoxLayout()
hbox.setContentsMargins(QtCore.QMargins(4, 2, 4, 2))
self.readout = QtGui.QLabel("")
hbox.addStretch(1)
hbox.addWidget(self.readout, stretch=0)
self.box_readout = QtGui.QLabel("")
hbox.addStretch(1)
hbox.addWidget(self.box_readout, stretch=0)
hw = QtGui.QWidget()
hw.setLayout(hbox)
vbox.addWidget(hw, stretch=0)
hbox2 = QtGui.QHBoxLayout()
hbox2.setContentsMargins(QtCore.QMargins(4, 2, 4, 2))
self.wstartscan = QtGui.QPushButton("Start Scan")
self.wstartscan.clicked.connect(self.start_scan)
self.wstartscan.setEnabled(True)
self.wstopscan = QtGui.QPushButton("Stop Scan")
self.wstopscan.clicked.connect(self.stop_scan)
self.wstopscan.setEnabled(False)
self.wcut = QtGui.QComboBox()
for name in fi.get_autocut_methods():
self.wcut.addItem(name)
self.wcut.currentIndexChanged.connect(self.cut_change)
self.wcolor = QtGui.QComboBox()
for name in fi.get_color_algorithms():
self.wcolor.addItem(name)
self.wcolor.currentIndexChanged.connect(self.color_change)
wopen = QtGui.QPushButton("Open File")
wopen.clicked.connect(self.open_file)
self.wsky = QtGui.QPushButton("Load Sky")
self.wsky.clicked.connect(self.load_sky)
self.wsky.setEnabled(False)
wquit = QtGui.QPushButton("Quit")
wquit.clicked.connect(self.quit)
fi.set_callback('cursor-changed', self.motion_cb)
fi.add_callback('cursor-down', self.btndown)
hbox2.addStretch(1)
for w in (self.wstartscan, self.wstopscan, self.wcut, self.wcolor,
wopen, self.wsky, wquit):
hbox2.addWidget(w, stretch=0)
hw2 = QtGui.QWidget()
hw2.setLayout(hbox2)
vbox.addWidget(hw2, stretch=0)
vw = QtGui.QWidget()
self.setCentralWidget(vw)
vw.setLayout(vbox)
self.recdc, self.compdc = self.add_canvas()
self.boxtag = "roi-box"
self.picktag = "pick-box"
def __init__(self, logger):
super(FitsViewer, self).__init__()
self.logger = logger
self.drawcolors = colors.get_colors()
self.dc = get_canvas_types()
self.set_medfilt(0)
self.set_c2c(0)
# create the ginga viewer and configure it
fi = CanvasView(self.logger, render='widget')
fi.enable_autocuts('on')
fi.set_autocut_params('zscale')
fi.enable_autozoom('on')
fi.set_callback('drag-drop', self.drop_file)
fi.add_callback('cursor-changed', self.cursor_cb)
fi.add_callback('cursor-down', self.click_cb)
fi.set_bg(0.2, 0.2, 0.2)
fi.ui_set_active(True)
self.fitsimage = fi
# enable some user interaction
bd = fi.get_bindings()
bd.enable_all(True)
# canvas that we will draw on
canvas = self.dc.DrawingCanvas()
# canvas.enable_draw(True)
# canvas.enable_edit(True)
# canvas.set_drawtype('circle', color='lightblue')
canvas.set_surface(fi)
self.canvas = canvas
# add canvas to view
#fi.add(canvas)
private_canvas = fi.get_canvas()
private_canvas.add(canvas)
# canvas.register_for_cursor_drawing(fi)
# canvas.add_callback('draw-event', self.draw_cb)
# canvas.set_draw_mode('draw')
canvas.ui_set_active(True)
self.drawtypes = canvas.get_drawtypes()
self.drawtypes.sort()
w = fi.get_widget()
w.resize(1000, 1000)
# ---------------------------------------------------------------------
# add scrollbar interface around this viewer
si = ScrolledView(fi)
vbox = QtGui.QVBoxLayout()
vbox.setContentsMargins(QtCore.QMargins(2, 2, 2, 2))
vbox.setSpacing(1)
vbox.addWidget(si, stretch=1)
# ---------------------------------------------------------------------
# add live cursor readout
self.readout = QtGui.QLabel("")
vbox.addWidget(self.readout,
stretch=0,
alignment=QtCore.Qt.AlignCenter)
# ---------------------------------------------------------------------
# add row of interface widgets
hbox = QtGui.QHBoxLayout()
hbox.setContentsMargins(QtCore.QMargins(4, 2, 4, 2))
wzoomfit = QtGui.QPushButton("Z0")
wzoomfit.clicked.connect(self.zoom_fit)
wzoomin = QtGui.QPushButton("Z+")
wzoomin.clicked.connect(self.zoom_in)
wzoomout = QtGui.QPushButton("Z-")
wzoomout.clicked.connect(self.zoom_out)
wc2c = QtGui.QCheckBox("Click to Center")
wc2c.stateChanged.connect(self.set_c2c)
self.wc2c = wc2c
wsolve = QtGui.QPushButton("Solve")
wsolve.clicked.connect(self.solve_astrometry)
woverlay = QtGui.QPushButton("Overlay Catalog")
woverlay.clicked.connect(self.overlay_catalog)
wclear = QtGui.QPushButton("Clear Overlays")
wclear.clicked.connect(self.clear_overlays)
wmedfilt = QtGui.QCheckBox("Median Filter")
wmedfilt.stateChanged.connect(self.set_medfilt)
self.wmedfilt = wmedfilt
wopen = QtGui.QPushButton("Open File")
wopen.clicked.connect(self.open_file)
wquit = QtGui.QPushButton("Quit")
wquit.clicked.connect(self.quit)
hbox.addStretch(1)
hbox.addWidget(wzoomfit, stretch=0)
hbox.addWidget(wzoomin, stretch=0)
hbox.addWidget(wzoomout, stretch=0)
hbox.addWidget(wc2c, stretch=0)
# hbox.addWidget(wsolve, stretch=0)
hbox.addWidget(woverlay, stretch=0)
hbox.addWidget(wclear, stretch=0)
hbox.addWidget(wmedfilt, stretch=0)
# hbox.addWidget(wopen, stretch=0)
hbox.addWidget(wquit, stretch=0)
# ---------------------------------------------------------------------
hw = QtGui.QWidget()
hw.setLayout(hbox)
vbox.addWidget(hw, stretch=0)
vw = QtGui.QWidget()
self.setCentralWidget(vw)
vw.setLayout(vbox)
def __init__(self,
panel_name,
ui,
logger,
row,
col,
drow,
dcol,
autocut_params='stddev',
auto=False):
#super(image_panel, self).__init__(panel_name,ui, logger, row, col, drow, dcol)
# enable some user interaction
#fi.get_bindings.enable_all(True)
#super(my_cutout_image, self).__init__(panel_name,ui, logger, row, col, drow, dcol)
#super(my_cutout_image,self).__init__(self)
QtCore.QObject.__init__(self)
self.logger = logger
self.ui = ui
fi = CanvasView(self.logger, render='widget')
fi.enable_autocuts('on')
fi.set_autocut_params(autocut_params)
fi.enable_autozoom('on')
#fi.set_callback('drag-drop', self.drop_file)
#fi.set_callback('none-move',self.cursor_cb)
fi.set_bg(0.2, 0.2, 0.2)
fi.ui_set_active(True)
self.fitsimage = fi
fi.show_focus_indicator(True)
bd = fi.get_bindings()
bd.enable_all(True)
self.cutout = fi.get_widget()
self.ui.cutoutsLayout.addWidget(self.cutout, row, col, drow, dcol)
self.fitsimage = fi
self.fitsimage.set_callback('none-move', self.cursor_cb)
#self.fitsimage.set_callback('cursor-down',self.cursor_down)
self.readout = QtWidgets.QLabel('')
ui.readoutGridLayout.addWidget(self.readout, 1, col, 1, 1)
#self.ui.readoutLabel.setText('this is another test')
self.fitsimage.set_callback('key-press', self.key_press_cb)
def __init__(self, logger):
super(FitsViewer, self).__init__()
self.logger = logger
# create the ginga viewer and configure it
fi = CanvasView(self.logger, render='widget')
fi.enable_autocuts('on')
fi.set_autocut_params('zscale')
fi.enable_autozoom('on')
fi.set_callback('drag-drop', self.drop_file)
fi.set_bg(0.2, 0.2, 0.2)
fi.ui_set_active(True)
fi.enable_auto_orient(True)
self.fitsimage = fi
# enable some user interaction
bd = fi.get_bindings()
bd.enable_all(True)
w = fi.get_widget()
w.resize(512, 512)
# add scrollbar interface around this viewer
si = ScrolledView(fi)
vbox = QtGui.QVBoxLayout()
vbox.setContentsMargins(QtCore.QMargins(2, 2, 2, 2))
vbox.setSpacing(1)
vbox.addWidget(si, stretch=1)
hbox = QtGui.QHBoxLayout()
hbox.setContentsMargins(QtCore.QMargins(4, 2, 4, 2))
wopen = QtGui.QPushButton("Open File")
wopen.clicked.connect(self.open_file)
wquit = QtGui.QPushButton("Quit")
wquit.clicked.connect(self.quit)
hbox.addStretch(1)
for w in (wopen, wquit):
hbox.addWidget(w, stretch=0)
hw = QtGui.QWidget()
hw.setLayout(hbox)
vbox.addWidget(hw, stretch=0)
vw = QtGui.QWidget()
self.setCentralWidget(vw)
vw.setLayout(vbox)
def __init__(self, logger):
super(FitsViewer, self).__init__()
self.logger = logger
self.drawcolors = colors.get_colors()
self.dc = get_canvas_types()
#fi = ImageViewCanvas(logger, render='widget')
fi = CanvasView(logger, render='widget')
fi.enable_autocuts('on')
fi.set_autocut_params('zscale')
fi.enable_autozoom('on')
fi.set_zoom_algorithm('rate')
fi.set_zoomrate(1.4)
fi.show_pan_mark(True)
#fi.enable_draw(False)
fi.set_callback('drag-drop', self.drop_file)
fi.set_callback('none-move', self.motion)
fi.set_bg(0.2, 0.2, 0.2)
fi.ui_setActive(True)
self.fitsimage = fi
bd = fi.get_bindings()
bd.enable_all(True)
# canvas that we will draw on
canvas = self.dc.DrawingCanvas()
canvas.enable_draw(True)
canvas.set_drawtype('rectangle', color='lightblue')
canvas.set_surface(fi)
self.canvas = canvas
# add canvas to view
#fi.add(canvas)
private_canvas = fi.get_canvas()
private_canvas.add(canvas)
canvas.ui_setActive(True)
self.drawtypes = canvas.get_drawtypes()
self.drawtypes.sort()
# add a color bar
private_canvas.add(self.dc.ColorBar(side='bottom', offset=10))
# add little mode indicator that shows modal states in
# the corner
private_canvas.add(self.dc.ModeIndicator(corner='ur'))
# little hack necessary to get correct operation of the mode indicator
# in all circumstances
bm = fi.get_bindmap()
bm.add_callback('mode-set', lambda *args: fi.redraw(whence=3))
w = fi.get_widget()
w.resize(512, 512)
vbox = QtGui.QVBoxLayout()
vbox.setContentsMargins(QtCore.QMargins(2, 2, 2, 2))
vbox.setSpacing(1)
vbox.addWidget(w, stretch=1)
self.readout = QtGui.QLabel("")
vbox.addWidget(self.readout, stretch=0,
alignment=QtCore.Qt.AlignCenter)
hbox = QtGui.QHBoxLayout()
hbox.setContentsMargins(QtCore.QMargins(4, 2, 4, 2))
wdrawtype = QtGui.QComboBox()
for name in self.drawtypes:
wdrawtype.addItem(name)
index = self.drawtypes.index('rectangle')
wdrawtype.setCurrentIndex(index)
wdrawtype.activated.connect(self.set_drawparams)
self.wdrawtype = wdrawtype
wdrawcolor = QtGui.QComboBox()
for name in self.drawcolors:
wdrawcolor.addItem(name)
index = self.drawcolors.index('lightblue')
wdrawcolor.setCurrentIndex(index)
wdrawcolor.activated.connect(self.set_drawparams)
self.wdrawcolor = wdrawcolor
wfill = QtGui.QCheckBox("Fill")
wfill.stateChanged.connect(self.set_drawparams)
self.wfill = wfill
walpha = QtGui.QDoubleSpinBox()
walpha.setRange(0.0, 1.0)
walpha.setSingleStep(0.1)
walpha.setValue(1.0)
walpha.valueChanged.connect(self.set_drawparams)
self.walpha = walpha
wclear = QtGui.QPushButton("Clear Canvas")
wclear.clicked.connect(self.clear_canvas)
wopen = QtGui.QPushButton("Open File")
wopen.clicked.connect(self.open_file)
wquit = QtGui.QPushButton("Quit")
wquit.clicked.connect(self.quit)
hbox.addStretch(1)
for w in (wopen, wdrawtype, wdrawcolor, wfill,
QtGui.QLabel('Alpha:'), walpha, wclear, wquit):
hbox.addWidget(w, stretch=0)
hw = QtGui.QWidget()
hw.setLayout(hbox)
vbox.addWidget(hw, stretch=0)
vw = QtGui.QWidget()
self.setCentralWidget(vw)
vw.setLayout(vbox)
def __init__(self, logger):
super(FitsViewer, self).__init__()
self.logger = logger
self.drawcolors = colors.get_colors()
self.dc = get_canvas_types()
fi = CanvasView(logger, render='widget')
fi.enable_autocuts('on')
fi.set_autocut_params('zscale')
fi.enable_autozoom('on')
fi.set_zoom_algorithm('rate')
fi.set_zoomrate(1.4)
fi.show_pan_mark(True)
#fi.enable_draw(False)
fi.set_callback('drag-drop', self.drop_file)
fi.set_callback('none-move', self.motion)
fi.set_bg(0.2, 0.2, 0.2)
fi.ui_setActive(True)
self.fitsimage = fi
bd = fi.get_bindings()
bd.enable_all(True)
# canvas that we will draw on
canvas = self.dc.DrawingCanvas()
canvas.enable_draw(True)
canvas.set_drawtype('rectangle', color='lightblue')
canvas.set_surface(fi)
self.canvas = canvas
# add canvas to view
#fi.add(canvas)
private_canvas = fi.get_canvas()
private_canvas.register_for_cursor_drawing(fi)
private_canvas.add(canvas)
canvas.ui_setActive(True)
self.drawtypes = canvas.get_drawtypes()
self.drawtypes.sort()
# add a color bar
#fi.show_color_bar(True)
fi.show_focus_indicator(True)
# add little mode indicator that shows keyboard modal states
fi.show_mode_indicator(True, corner='ur')
w = fi.get_widget()
w.resize(512, 512)
vbox = QtGui.QVBoxLayout()
vbox.setContentsMargins(QtCore.QMargins(2, 2, 2, 2))
vbox.setSpacing(1)
vbox.addWidget(w, stretch=1)
self.readout = QtGui.QLabel("")
vbox.addWidget(self.readout, stretch=0,
alignment=QtCore.Qt.AlignCenter)
hbox = QtGui.QHBoxLayout()
hbox.setContentsMargins(QtCore.QMargins(4, 2, 4, 2))
wdrawtype = QtGui.QComboBox()
for name in self.drawtypes:
wdrawtype.addItem(name)
index = self.drawtypes.index('rectangle')
wdrawtype.setCurrentIndex(index)
wdrawtype.activated.connect(self.set_drawparams)
self.wdrawtype = wdrawtype
wdrawcolor = QtGui.QComboBox()
for name in self.drawcolors:
wdrawcolor.addItem(name)
index = self.drawcolors.index('lightblue')
wdrawcolor.setCurrentIndex(index)
wdrawcolor.activated.connect(self.set_drawparams)
self.wdrawcolor = wdrawcolor
wfill = QtGui.QCheckBox("Fill")
wfill.stateChanged.connect(self.set_drawparams)
self.wfill = wfill
walpha = QtGui.QDoubleSpinBox()
walpha.setRange(0.0, 1.0)
walpha.setSingleStep(0.1)
walpha.setValue(1.0)
walpha.valueChanged.connect(self.set_drawparams)
self.walpha = walpha
wclear = QtGui.QPushButton("Clear Canvas")
wclear.clicked.connect(self.clear_canvas)
wopen = QtGui.QPushButton("Open File")
wopen.clicked.connect(self.open_file)
wquit = QtGui.QPushButton("Quit")
wquit.clicked.connect(self.quit)
hbox.addStretch(1)
for w in (wopen, wdrawtype, wdrawcolor, wfill,
QtGui.QLabel('Alpha:'), walpha, wclear, wquit):
hbox.addWidget(w, stretch=0)
hw = QtGui.QWidget()
hw.setLayout(hbox)
vbox.addWidget(hw, stretch=0)
vw = QtGui.QWidget()
self.setCentralWidget(vw)
vw.setLayout(vbox)
