class ScrolledCanvas(Frame):
def __init__(self,
parent,
resizeCallback=None,
width=600,
height=600,
*args,
**kw):
self.bbox = None
self.busy = 0
self.initialX = None
self.initialY = None
self.resizeCallback = resizeCallback
apply(Frame.__init__, (self, parent) + args, kw)
self.grid_rowconfigure(0, weight=1)
self.grid_columnconfigure(0, weight=1)
self.menu = Menu(self, tearoff=0, include_event=True)
self.configMenu()
self.canvas = Canvas(self,
relief='flat',
borderwidth=0,
width=width,
height=height)
self.canvas.configure(xscrollincrement=2, yscrollincrement=2)
self.canvas.grid(row=0, column=0, sticky=Tkinter.NSEW)
self.horizScrollbar = Tkinter.Scrollbar(self,
bg=self.cget('bg'),
command=self.canvas.xview,
orient=Tkinter.HORIZONTAL,
borderwidth=1)
self.vertScrollbar = Tkinter.Scrollbar(self,
bg=self.cget('bg'),
command=self.canvas.yview,
orient=Tkinter.VERTICAL,
borderwidth=1)
self.canvas.configure(xscrollcommand=self.horizScrollbar.set,
yscrollcommand=self.vertScrollbar.set)
self.canvas.bind('<Configure>', self.resizeAfter)
self.canvas.bind('<Button-1>', self.mouseButton1)
self.canvas.bind('<Button-2>', self.mouseButton2)
self.canvas.bind('<Button-3>', self.mouseButton3)
self.canvas.bind('<ButtonRelease-1>', self.mouseButtonRelease1)
self.canvas.bind('<ButtonRelease-2>', self.mouseButtonRelease2)
self.canvas.bind('<B2-Motion>', self.mouseScroll)
self.canvas.bind('<B3-Motion>', self.doNothing)
self.canvas.bind('<Motion>', self.mouseEnter)
self.canvas.bind('<Enter>', self.mouseEnter)
def doNothing(self, event):
pass
def mouseEnter(self, event):
if self.menu.winfo_ismapped():
self.removeMenu()
def refresh(self):
self.bbox = self.canvas.bbox('all')
bbox = self.bbox
if not bbox:
self.busy = 0
return
cWidth = int(self.canvas.cget('width'))
cHeight = int(self.canvas.cget('height'))
if cHeight > bbox[3] - bbox[1]:
self.vertScrollbar.grid_forget()
else:
self.vertScrollbar.grid(row=0, column=1, sticky=Tkinter.NS)
if cWidth > bbox[2] - bbox[0]:
self.horizScrollbar.grid_forget()
else:
self.horizScrollbar.grid(row=1, column=0, sticky=Tkinter.EW)
x1 = bbox[0]
y1 = bbox[1]
x2 = max(bbox[0] + cWidth, bbox[2])
y2 = max(bbox[1] + cHeight, bbox[3])
self.canvas.configure(scrollregion=(x1, y1, x2, y2))
self.update_idletasks()
self.busy = 0
def printCanvas(self, *event):
fileTypes = [FileType('PostScript', ['*.ps']), FileType('All', ['*'])]
fileSelectPopup = FileSelectPopup(self,
file_types=fileTypes,
title='Print canvas to file',
dismiss_text='Cancel',
selected_file_must_exist=False)
fileName = fileSelectPopup.getFile()
self.bbox = bbox = self.canvas.bbox('all')
w = bbox[2] - bbox[0]
h = bbox[3] - bbox[1]
self.canvas.postscript(colormode='color',
file=fileName,
x=bbox[0],
y=bbox[1],
width=w + 2,
pagewidth='21.c',
height=h + 2)
def configMenu(self):
items = [
{
'kind': 'command',
'label': 'Print to file',
'command': self.printCanvas
},
]
self.menu.setMenuItems(items)
def removeMenu(self, *event):
self.menu.unpost()
def mouseButton3(self, event):
self.menu.popupMenu(event)
def mouseButton1(self, event):
self.removeMenu()
if not self.initialX:
self.initialX = event.x
self.initialY = event.y
def mouseButton2(self, event):
self.removeMenu()
if not self.initialX:
self.initialX = event.x
self.initialY = event.y
self.initialPX = self.horizScrollbar.get()[0]
self.initialPY = self.vertScrollbar.get()[0]
def mouseButtonRelease1(self, event):
self.initialX = None
self.initialY = None
def mouseButtonRelease2(self, event):
self.initialX = None
self.initialY = None
self.initialPX = None
self.initialPY = None
def mouseScroll(self, event):
self.menu.unpost()
bbox = self.bbox
if not bbox:
return
bW = float(bbox[2] - bbox[0])
bH = float(bbox[3] - bbox[1])
cWidth = int(self.canvas.cget('width'))
cHeight = int(self.canvas.cget('height'))
if cWidth < bW:
dx = self.initialX - event.x
prop = self.initialPX + (dx / bW)
self.canvas.xview('moveto', prop)
if cHeight < bH:
dy = self.initialY - event.y
prop = self.initialPY + (dy / bH)
self.canvas.yview('moveto', prop)
def resizeAfter(self, event):
if self.busy:
return
else:
self.busy = 1
self.removeMenu()
self.after_idle(lambda: self.resize(event))
def resize(self, event):
if self.resizeCallback:
self.after_idle(
lambda: self.resizeCallback(event.width, event.height))
self.canvas.configure(width=event.width, height=event.height)
self.after_idle(self.refresh)
class Tree(Frame):
def __init__(self,
parent,
iconSize='medium',
multiSelect=False,
font='Helvetica 8',
doubleCallback=None,
*args,
**kw):
Frame.__init__(self, parent, *args, **kw)
self.multiSelect = multiSelect
self.icons = {}
self.openDict = {}
self.scrollbarWidth = 15
self.canvasList = []
self.canvasDict = {}
self.canvasLines = []
self._wait = False
self.vOffset = 0
self.nodes = [] # Just a list of nodes
self.nodeDict = {} # To fetch nodes via objects
self.font = font
self.doubleCallback = doubleCallback
#bg = self.cget('background')
iconItems = [{
'kind': 'command',
'label': 'Small',
'command': self.smallIcons
}, {
'kind': 'command',
'label': 'Medium',
'command': self.medIcons
}, {
'kind': 'command',
'label': 'Large',
'command': self.largeIcons
}]
self.menu = Menu(self, tearoff=False)
menu_items = [
{
'kind': 'cascade',
'label': 'Icon size',
'submenu': iconItems
},
]
self.menu.setMenuItems(menu_items)
self.rowHeight = None
self.visibleRows = 80
self.setIconSize(iconSize, redraw=False)
self.canvas = Canvas(self,
relief='flat',
borderwidth=0,
background=BG_COLOR,
xscrollcommand=self._setHScrollbar,
*args,
**kw)
self.canvas.pack()
self.xScrollbar = Scrollbar(self,
orient='horizontal',
width=self.scrollbarWidth,
borderwidth=1,
callback=self._moveHScrollbar,
background=BG_COLOR)
self.yScrollbar = Scrollbar(self,
orient='vertical',
width=self.scrollbarWidth,
borderwidth=1,
callback=self._setVScrollbar,
background=BG_COLOR)
self.canvas.bind('<Button-1>', self._mouseClick)
self.canvas.bind('<Double-1>', self._mouseDoubleClick)
if isWindowsOS:
self.canvas.bind('<MouseWheel>', self._windowsOsScroll)
else:
self.canvas.bind('<Button-4>', self._mouseUp)
self.canvas.bind('<Button-5>', self._mouseDown)
self.canvas.bind('<p>', self._printCanvas)
self.canvas.bind('<KeyPress-Prior>', self._pageUp)
self.canvas.bind('<KeyPress-Next>', self._pageDown)
self.canvas.bind('<KeyPress-Up>', self._keyUp)
self.canvas.bind('<KeyPress-Down>', self._keyDown)
self.canvas.bind('<KeyPress-Home>', self._keyHome)
self.canvas.bind('<KeyPress-End>', self._keyEnd)
self.canvas.bind('<Enter>', self._enter)
self.canvas.bind('<ButtonPress-3>', self._popupMenu)
self.bind('<Configure>', self._changeSizeAfter)
def _popupMenu(self, event):
self.menu.popupMenu(event)
def smallIcons(self):
self.setIconSize('small')
def medIcons(self):
self.setIconSize('medium')
def largeIcons(self):
self.setIconSize('large')
def setIconSize(self, iconSize, redraw=True):
size = ICON_SIZE_DICT.get(iconSize, 22)
if size != self.rowHeight:
self.rowHeight = size + 1
self.font = 'Helvetica %d' % (size / 2)
ccpnDir = getTopDirectory()
iconDir = '%dx%d' % (size, size)
imageDir = path.join(ccpnDir, 'python', 'memops', 'gui',
'graphics', iconDir)
files = [f for f in listdir(imageDir) if f.endswith('.gif')]
for file in files:
imageFile = path.join(imageDir, file)
self.icons[file[:-4]] = PhotoImage(file=imageFile)
if redraw:
self._changeSize()
return size
def _setHScrollbar(self, start, end):
self.xScrollbar.set(float(start), float(end))
def _moveHScrollbar(self, start, end):
self.canvas.xview('moveto', start)
def _enter(self, event):
self.menu.popdownMenu()
self.canvas.focus_force()
def _printCanvas(self, *event):
from memops.gui.FileSelect import FileType
from memops.gui.FileSelectPopup import FileSelectPopup
fileTypes = [FileType('PostScript', ['*.ps']), FileType('All', ['*'])]
fileSelectPopup = FileSelectPopup(self,
file_types=fileTypes,
title='Print canvas to file',
dismiss_text='Cancel',
selected_file_must_exist=False)
fileName = fileSelectPopup.getFile()
self.canvas.postscript(colormode='color', file=fileName)
def _windowsOsScroll(self, event):
delta = event.delta
if delta > 0:
self._mouseUp(event)
elif delta < 0:
self._mouseDown(event)
def _keyHome(self, event):
self.vOffset = 0
self._drawAfter()
def _keyEnd(self, event):
numNodes = len(self.nodes)
visNodes = self.visibleRows
self.vOffset = max(0, numNodes - visNodes)
self._drawAfter()
def _scroll(self, delta=1):
height = int(self.winfo_height())
numNodes = len(self.nodes)
visNodes = self.visibleRows
if numNodes <= visNodes:
return
vOffset = self.vOffset + delta
vOffset = max(0, vOffset)
vOffset = min(numNodes - visNodes, vOffset)
if vOffset != self.vOffset:
self.vOffset = vOffset
self._drawAfter()
def _pageUp(self, event):
self._scroll(-1 * self.visibleRows)
def _pageDown(self, event):
self._scroll(self.visibleRows)
def _mouseUp(self, event):
self._scroll(-8)
def _mouseDown(self, event):
self._scroll(8)
def _keyUp(self, event):
self._scroll(-1)
def _keyDown(self, event):
self._scroll(1)
def _setVScrollbar(self, start, end):
self.cancelEdits()
height = int(self.winfo_height())
gaps = start + 1 - end
nRows = float(len(self.nodes))
if gaps == 0 or nRows == 0.0:
self.yScrollbar.set(0, 1)
self.vOffset = 0
else:
# Have to do this so that the bar keeps up with the mouse
overlap = int(nRows - self.visibleRows)
size = min(1.0, self.visibleRows / nRows)
self.yScrollbar.set(min(gaps, max(0, start)),
max(size, min(1.0, start + size)))
self.vOffset = min(
max(0, int('%1.1d' % (start / gaps * (overlap + 1)))), overlap)
#vOffset = max(0, start*nRows)
#vOffset = min(nRows-self.visibleRows, vOffset)
#self.vOffset = int(vOffset)
self._drawAfter()
def _updateScrollBars(self):
allRows = len(self.nodes)
visRows = self.visibleRows
if allRows < visRows:
self.vOffset = 0
self.yScrollbar.set(0, 1)
self.yScrollbar.place_forget()
else:
size = self.scrollbarWidth
width = int(self.winfo_width()) - 1
height = int(self.winfo_height()) - 1
start = float(self.vOffset) / allRows
end = float(self.vOffset + visRows) / allRows
self.yScrollbar.set(start, end)
self.yScrollbar.place(x=width - size + 1,
y=1,
width=size,
height=height)
self.update_idletasks()
def _mouseClick(self, event):
self.cancelEdits()
x = self.canvas.canvasx(event.x)
y = self.canvas.canvasy(event.y)
obj = self.canvas.find('closest', x, y)[0]
node, typ = self.canvasDict.get(obj, (None, None))
if node:
if typ is TOGGLE:
node.toggle()
else:
if self.multiSelect and (event.state & 4 or event.state & 1):
if event.state & 4:
node.isSelected = not node.isSelected
elif event.state & 1:
indices = [
self.nodes.index(node),
]
for i, node2 in enumerate(self.nodes):
if node2.isSelected:
indices.append(i)
for node2 in self.nodes[min(indices):max(indices) + 1]:
node2.isSelected = True
else:
for node2 in self.nodes:
if node2.isSelected:
node2.isSelected = False
node.isSelected = True
self._drawAfter()
def _mouseDoubleClick(self, event):
self.cancelEdits()
x = self.canvas.canvasx(event.x)
y = self.canvas.canvasy(event.y)
obj = self.canvas.find('closest', x, y)[0]
node, typ = self.canvasDict.get(obj, (None, None))
if node:
if typ is TOGGLE:
#node.toggle()
return
elif self.doubleCallback:
self.doubleCallback(node)
self._drawAfter()
def _drawAfter(self):
if self._wait:
return
self._wait = True
self.after_idle(self._draw)
def _draw(self):
self._updateScrollBars()
delta = self.rowHeight
canvas = self.canvas
cImage = canvas.create_image
cList = self.canvasList
cDict = self.canvasDict
cLines = self.canvasLines
cConfig = canvas.itemconfigure
cDel = canvas.delete
cCoords = canvas.coords
cText = canvas.create_text
cRect = canvas.create_rectangle
cBbox = canvas.bbox
cLine = canvas.create_line
cLift = canvas.lift
cLower = canvas.lower
cPoly = canvas.create_polygon
nodes = self.nodes
nodeDict = self.nodeDict
visibleRows = self.visibleRows
icons = self.icons
font = self.font
vOffset = self.vOffset
bg = BG_COLOR # self.cget('bg')
roots = [n for n in nodes if not n.parent]
if not roots:
raise Exception('No rooted nodes')
for item in cLines:
cDel(item)
stack = [(node, 0) for node in roots]
nodes = []
while stack:
node, level = stack.pop(0)
nodes.append((node, level))
if node.isOpen:
level2 = level + 1
stack = [(c, level2) for c in node.children] + stack
yDict = {}
pLevel = 0
pNode = None
pad = 2 + (delta / 2)
bSpace = 4
nodes = nodes[vOffset:]
for row, data in enumerate(nodes):
node, level = data
y = pad + row * delta
x = pad + level * delta
x1 = x + delta
x2 = x1 + delta - bSpace
yDict[node] = y, x1
yP, xP = yDict.get(node.parent, (0, x))
if yP is not None:
line = cLine(xP, yP, xP, y, fill=LINE_COLOR, width=1)
cLower(line)
cLines.append(line)
if row > visibleRows:
break
iconImage = icons[node.icon]
if node.isSelected:
bgColor = SELECT_BG_COLOR
fgColor = SELECT_FG_COLOR
else:
bgColor = bg
fgColor = bg
if row < len(cList):
line, rect, tog1, tog2, box, icon, text = cList[row]
cConfig(rect, fill=bgColor, outline=fgColor)
cConfig(icon, image=iconImage)
cConfig(text, text=node.label or '', font=font)
cCoords(icon, x1, y)
cCoords(text, x2, y)
cCoords(line, x, y, x1, y)
else:
line = cLine(x, y, x1, y, fill=LINE_COLOR)
rect = cRect(x, y, x2, y, fill=bgColor, outline=fgColor)
box = cRect(-2, -2, -2, -2, fill=NODE_BG_COLOR)
tog1 = cLine(-2, -2, -2, -2)
tog2 = cLine(-2, -2, -2, -2)
icon = cImage(x1, y, image=iconImage)
text = cText(x2,
y,
text=node.label or '',
justify='left',
anchor='w',
font=font)
cList.append((line, rect, tog1, tog2, box, icon, text))
if node.callback:
cCoords(box, x - 4, y - 4, x + 4, y + 4)
if node.isOpen:
cCoords(tog1, -2, -2, -2, -2)
cCoords(tog2, x - 2, y, x + 3, y)
else:
cCoords(tog1, x, y - 2, x, y + 3)
cCoords(tog2, x - 2, y, x + 3, y)
else:
cCoords(tog1, -2, -2, -2, -2)
cCoords(tog2, -2, -2, -2, -2)
cCoords(box, -2, -2, -2, -2)
bbox = cBbox(text)
if bbox:
cCoords(rect, bbox[0] - 2, bbox[1], bbox[2] + 2, bbox[3])
cLift(box)
cLift(tog1)
cLift(tog2)
cDict[tog1] = (node, TOGGLE)
cDict[tog2] = (node, TOGGLE)
cDict[box] = (node, TOGGLE)
cDict[text] = (node, TEXT)
cDict[icon] = (node, ICON)
nRows = min(visibleRows, len(nodes))
if len(cList) > nRows:
for row in range(nRows, len(cList)):
for item in cList[row]:
if cDict.get(item):
del cDict[item]
cDel(item)
self.canvasList = cList[:nRows]
self._wait = False
def setFont(self, font):
self.font = font
self._drawAfter()
def _changeSizeAfter(self, event):
self.after_idle(lambda: self._changeSize(event))
def _changeSize(self, event=None):
self.cancelEdits()
if event:
width = event.width
height = event.height
else:
width = int(self.winfo_width())
height = int(self.winfo_height())
self.canvas.config(width=width, height=height)
self.visibleRows = height / self.rowHeight
bbox = self.canvas.bbox('all')
if bbox: # None at startup: nothing drawn
canvasWidth = bbox[2] - bbox[0]
if width < canvasWidth:
size = self.scrollbarWidth
end = width / float(canvasWidth)
self.canvas.config(scrollregion="0 0 %s %s" %
(canvasWidth, height))
if self.visibleRows < len(self.nodes):
self.xScrollbar.place(x=0,
y=height - size,
width=width - size,
height=size)
else:
self.xScrollbar.place(x=0,
y=height - size,
width=width,
height=size)
self.xScrollbar.set(0, end)
else:
self.xScrollbar.place_forget()
else:
self.xScrollbar.place_forget()
self._drawAfter()
# Public
def cancelEdits(self):
self.menu.popdownMenu()
def getSelected(self):
return [node.object for node in self.nodes if node.isSelected]
def select(self, object, expand=True):
node = self.nodeDict.get(object)
if node is not None:
node.isSelected = True
if expand:
parent = node.parent
while parent:
parent.isOpen = True
parent = parent.parent
self._drawAfter()
def selectAll(self, expand=True):
for node in self.nodes:
node.isSelected = True
if expand:
node.isOpen = expand
def selectDeep(self, object, expand=True):
node = self.nodeDict.get(object)
if node is not None:
stack = [
node,
]
nodes = []
while stack:
node2 = stack.pop()
stack.extend(node2.children)
nodes.append(node2)
for node2 in nodes:
if expand:
node2.isOpen = True
node2.isSelected = True
self._drawAfter()
def setSelected(self, objects, expand=True):
select = self.select
for object in objects:
select(object, expand)
def expand(self, object):
node = self.nodeDict.get(object)
if node is not None:
node.expand()
self._drawAfter()
def expandAll(self):
for node in self.nodes:
node.expand()
self._drawAfter()
def expandDeep(self, object):
node = self.nodeDict.get(object)
if node is not None:
stack = [
node,
]
nodes = []
while stack:
node2 = stack.pop()
stack.extend(node2.children)
nodes.append(node2)
for node2 in nodes:
node2.iexpand()
self._drawAfter()
def contract(self, object):
node = self.nodeDict.get(object)
if node is not None:
node.collapse()
self._drawAfter()
def contractAll(self):
for node in self.nodes:
node.collapse()
self._drawAfter()
def contractDeep(self, object):
node = self.nodeDict.get(object)
if node is not None:
stack = [
node,
]
nodes = []
while stack:
node2 = stack.pop()
stack.extend(node2.children)
nodes.append(node2)
for node2 in nodes:
node2.collapse()
self._drawAfter()
def update(self,
parents,
objects,
labels=None,
icons=None,
callbacks=None,
editWidgets=None):
n = len(parents)
for test in (objects, callbacks, labels, icons, editWidgets):
if test is not None:
assert len(test) == n
self.nodes = nodes = []
self.nodeDict = nodeDict = {}
self.openDict = {}
if not labels:
labels = [None] * n
if not icons:
icons = [None] * n
if not callbacks:
callbacks = [None] * n
if not editWidgets:
editWidgets = [[] for x in xrange(n)]
for i, parent in enumerate(parents):
object = objects[i]
node = Node(self, parent, object, labels[i], icons[i],
callbacks[i], False, False, editWidgets[i])
# JMCI FIXME: need to understand how the redraw works
self._draw()
def add(self,
parent,
object,
label=None,
icon='media-playback-stop',
callback=None,
isOpen=False,
isSelected=False,
editWidgets=None):
nodeDict = self.nodeDict
if nodeDict.get(object):
nodeDict[object].delete()
#raise Exception('Node already present for object %s' % object)
node = Node(self, parent, object, label, icon, callback, isOpen,
isSelected, editWidgets)
def remove(self, object):
node = self.nodeDict.get(object)
if node is not None:
if self.openDict.get(object):
del self.openDict[object]
node.delete()
self._drawAfter()