def __init__(self, overlayList, displayCtx):
"""Adds a few listeners to the properties of this object, to update
the colour bar when they change.
"""
self.__tex = None
self.__name = '{}_{}'.format(self.__class__.__name__, id(self))
self.__cbar = cbar.ColourBar(overlayList, displayCtx)
self.__cbar.register(self.__name, self.updateColourBarTexture)
self.addListener('barSize', self.__name, self.updateColourBarTexture)
self.addListener('highDpi', self.__name, self.__highDpiChanged)
def buildColourBarBitmap(overlayList, displayCtx, width, height, sceneOpts):
"""If the currently selected overlay has a display range,
creates and returns a bitmap containing a colour bar. Returns
``None`` otherwise.
:arg overlayList: The :class:`.OverlayList`.
:arg displayCtx: The :class:`.DisplayContext`.
:arg width: Colour bar width in pixels.
:arg height: Colour bar height in pixels.
:arg sceneOpts: :class:`.SceneOpts` instance containing display
settings.
"""
overlay = displayCtx.getSelectedOverlay()
display = displayCtx.getDisplay(overlay)
opts = display.opts
cbarLocation = sceneOpts.colourBarLocation
cbarSize = sceneOpts.colourBarSize
if cbarLocation in ('top', 'bottom'): width = width * cbarSize / 100.0
elif cbarLocation in ('left', 'right'): height = height * cbarSize / 100.0
if not isinstance(opts, displaycontext.ColourMapOpts):
return None
if cbarLocation in ('top', 'bottom'): orient = 'horizontal'
elif cbarLocation in ('left', 'right'): orient = 'vertical'
cb = cbar.ColourBar(overlayList, displayCtx)
cb.orientation = orient
cb.labelSide = sceneOpts.colourBarLabelSide
cb.bgColour = sceneOpts.bgColour
cb.textColour = sceneOpts.fgColour
cb.fontSize = sceneOpts.labelSize
cbarBmp = cb.colourBar(width, height)
# The colourBarBitmap function returns a w*h*4
# array, but the fsleyes_widgets.utils.layout.Bitmap
# (see the next function) assumes a h*w*4 array
cbarBmp = cbarBmp.transpose((1, 0, 2))
return cbarBmp
def _ColourMapOpts_ColourMapWidget(target, parent, panel, overlayList,
displayCtx, threedee):
"""Builds a panel which contains widgets for controlling the
:attr:`.ColourMapOpts.cmap`, :attr:`.ColourMapOpts.negativeCmap`, and
:attr:`.ColourMapOpts.useNegativeCmap`.
:returns: A ``wx.Sizer`` containing all of the widgets, and a list
containing the extra widgets that were added.
"""
# Button to load a new
# colour map from file
loadAction = loadcmap.LoadColourMapAction(overlayList, displayCtx)
loadButton = wx.Button(parent)
loadButton.SetLabel(strings.labels[panel, 'loadCmap'])
loadAction.bindToWidget(panel, wx.EVT_BUTTON, loadButton)
cmap = getWidgetSpecs(target, threedee)['cmap']
negCmap = getWidgetSpecs(target, threedee)['negativeCmap']
useNegCmap = getWidgetSpecs(target, threedee)['useNegativeCmap']
cbpanel = imagepanel.ImagePanel(parent)
cbpanel.SetMinSize((-1, 30))
colourbar = cbar.ColourBar(overlayList, displayCtx)
colourbar.bgColour = (0, 0, 0, 0)
colourbar.showLabel = False
colourbar.showTicks = False
def cbarUpdate(*a):
w, h = cbpanel.GetSize().Get()
if w < 20 or h < 20:
return
bmp = colourbar.colourBar(w, h)
if bmp is None:
return
if fwidgets.wxversion() == fwidgets.WX_PHOENIX:
bmp = wx.Bitmap.FromBufferRGBA(w, h, bmp.transpose(1, 0, 2))
else:
bmp = wx.BitmapFromBufferRGBA(w, h, bmp.transpose(1, 0, 2))
cbpanel.SetImage(bmp.ConvertToImage())
lname = 'ColourBarWidget_{}'.format(colourbar)
def onDestroy(ev):
colourbar.deregister(lname)
colourbar.destroy()
colourbar.register(lname, cbarUpdate)
cbpanel.Bind(wx.EVT_SIZE, cbarUpdate)
cbpanel.Bind(wx.EVT_WINDOW_DESTROY, onDestroy)
cbarUpdate()
cmap = props.buildGUI(parent, target, cmap)
negCmap = props.buildGUI(parent, target, negCmap)
useNegCmap = props.buildGUI(parent, target, useNegCmap)
useNegCmap.SetLabel(strings.properties[target, 'useNegativeCmap'])
sizer = wx.GridBagSizer()
sizer.AddGrowableCol(0)
sizer.Add(cbpanel, (0, 0), (1, 2), flag=wx.EXPAND)
sizer.Add(cmap, (1, 0), (1, 1), flag=wx.EXPAND)
sizer.Add(loadButton, (1, 1), (1, 1), flag=wx.EXPAND)
sizer.Add(negCmap, (2, 0), (1, 1), flag=wx.EXPAND)
sizer.Add(useNegCmap, (2, 1), (1, 1), flag=wx.EXPAND)
return sizer, [cmap, negCmap, useNegCmap]