class ScrollableFrame(Frame):
def __init__(self, root, container, *args, **kwargs):
super().__init__(container, *args, **kwargs)
self.numberOfChilds = 0
self._on_end = lambda: None
self.canvas = Canvas(self, *args, **kwargs)
self.scrollbar = Scrollbar(self,
orient="vertical",
command=self.canvas.yview)
self.scrollable_frame = Frame(self.canvas, *args, **kwargs)
self.scrollable_frame.bind(
"<Configure>", lambda e: self.canvas.configure(scrollregion=self.
canvas.bbox("all")))
self.canvas.create_window((0, 0),
window=self.scrollable_frame,
anchor="nw")
self.canvas.configure(yscrollcommand=self.scrollbar.set)
self.canvas.pack(side="left", fill="both", expand=True)
self.scrollbar.pack(side="right", fill="y")
root.bind("<MouseWheel>", lambda event: self._on_mousewheel(event))
'''
setOnEnd => this method sets the event OnEnd, it recives a lambda _on_end and by default is None
@_on_end => is the lambda funcion for when the mouseWheel turn to 95%
'''
def setOnEnd(self, _on_end):
self._on_end = _on_end
'''
_on_mousewheel => this method is an event reciver for when mouseWheel changes
'''
def _on_mousewheel(self, event):
self.canvas.yview_scroll(int(-event.delta / 120), "units")
if self.scrollbar.get()[1] > 0.95:
self._on_end()
def adicionarListaFrames(self, listaFrames):
if self.scrollable_frame == len(listaFrames):
return
listaFramesAAdicionarados = listaFrames[self.numberOfChilds:self.
numberOfChilds + 10]
for frameAAdicionar in listaFramesAAdicionarados:
frameAAdicionar.grid(padx=5)
self.numberOfChilds = self.numberOfChilds + 10
class DataViewer:
''' DataViewer
======================
David Miller, 2020
The University of Sheffield 2020
Wrapper GUI for a Matplotlib Figure showing the data given on creation. Called by HDF5Viewer when the user
double clicks on a dataset.
This GUI is designed a means of performing basic inspections of data stored in HDF5 files. If users want to
perform something intensive or particular custom, they are advised to do so elsewhere.
On creation, the DataViewer opens up the file specified by filename and accesses the dataset specified by the
path dataName. It then decides how to plot the data based on the number of dimensions in the dataset. The used
plots are as follows using their respective default options:
|No. dims | Plots |
|---------|----------|
| 1 | Line |
| 2 | Contourf |
| 3 | Contourf |
In the case of three dimensions, a scrollbar is added on top of the plot and provides a means for the user
to select which 2D slice of the 3D dataset to show.
The scrollbar only supports drag operations.
Any higher dimensional data is ignored.
The title above the Figure displays the name of the dataset and which index, if any is being displayed.
Methods
-------------------------
on_key_press(event):
Handler for key presses used on the Matploblib canvas
scroll_data(self,*args):
Handler for changing which slice of a 3D dataset is displayed. A new data index is chosen based on where
the scrollbar cursor is dragged to. The index is calculated by multiplying the scrollbar positon [0,1] by
the number of frames in the dataset and then converted to an integer.
Updates the title and canvas on exit. Sets the scrollbar position to where the user left it.
Currently this only has support for clicking and dragging the scrollbar cursor. Other operations are
ignored.
'''
# using filename and name of dataset
# create a figure and display the data
def __init__(self,master,dataName,filename):
self.master = master
# save creation options
self.dataName = dataName
self.filename = filename
# set title
self.master.title("Data Viewer")
# current colormap, default
self.curr_cmap = getattr(matplotlib.cm,matplotlib.rcParams['image.cmap'])
# currnt line color
self.curr_lcol = matplotlib.rcParams['axes.prop_cycle'].by_key()['color'][0]
## menu bar for customisation
# root menu
menu = Menu(master)
# options menu
optsmenu = Menu(menu,tearoff=0)
# label for graph
self.title = StringVar()
self.title.set(f'Displaying {dataName}')
self.graph_title = Label(master,textvariable=self.title)
self.graph_title.pack(side=TOP,pady=10,padx=10)
# create figure
self.fig = Figure(figsize=(5,5),dpi=100)
self.axes = self.fig.add_subplot(111)
# get data from dataset and plot data
with h5py.File(filename,mode='r') as f:
self.data_shape = f[dataName].shape
# if the data is 1D, plot as line
if len(self.data_shape)==1:
self.axes.plot(f[dataName][()],self.curr_lcol)
optsmenu.add_command(label="Set color",command=self.set_color)
# if data is 2D, plot as filled contour
elif len(self.data_shape)==2:
self.axes.contourf(f[dataName][()],cmap=self.curr_cmap)
optsmenu.add_command(label="Set colormap",command=self.set_colormap)
# if data is 3D plot as contourf, but also add a scrollbar for navigation
elif len(self.data_shape)==3:
optsmenu.add_command(label="Set colormap",command=self.set_colormap)
# create scroll bar for viewing different slices
self.plot_scroll=Scrollbar(master,orient="horizontal",command=self.scroll_data)
# add too gui
self.plot_scroll.pack(side=TOP,fill=BOTH,expand=True)
# plot first slice of data
self.axes.contourf(f[dataName][:,:,0],cmap=self.curr_cmap)
# create index for current depth index
self.depth_index = 0
self.title.set(f"Displaying {dataName} [{self.depth_index}]")
# add to root menu
menu.add_cascade(label="Options",menu=optsmenu)
self.master.config(menu=menu)
# create canvas to render figure
self.fig_canvas = FigureCanvasTkAgg(self.fig,self.master)
# update result
self.fig_canvas.draw()
# update canvas to set position and expansion options
self.fig_canvas.get_tk_widget().pack(side=TOP,fill=BOTH,expand=True)
## add matplotlib toolbar
self.fig_toolbar = NavigationToolbar2Tk(self.fig_canvas,self.master)
self.fig_toolbar.update()
# add to gui. always one row below the canvas
self.fig_canvas._tkcanvas.pack(side=TOP,fill=BOTH,expand=True)
## add key press handlers
self.fig_canvas.mpl_connect("key_press_event",self.on_key_press)
# ensure elements are expandable in grid
num_cols,num_rows = master.grid_size()
for c in range(num_cols):
master.columnconfigure(c,weight=1)
for r in range(num_rows):
master.rowconfigure(r,weight=1)
# finish any idle tasks and set the minimum size of the window to cur
master.update_idletasks()
master.after_idle(lambda: master.minsize(master.winfo_width(), master.winfo_height()))
# handler for matplotlib keypress events
def on_key_press(event):
key_press_handler(event,self.fig_canvas,self.fig_toolbar)
# handler for using the scrollbar to view slices of data
def scroll_data(self,*args):
#print(args)
# if the user has dragged the scrollbar
if args[0] == "moveto":
# args is only one element in this case and is a number between 0 and 1
# 0 is left most position and 1 is right most position
# the data index is calculated as this number times depth and converted to integer
self.depth_index = int(float(args[1])*self.data_shape[2])
# if index exceeds dataset limits
# correct it
if self.depth_index>=self.data_shape[-1]:
self.depth_index = self.data_shape[-1]-1
# set the scrollbar position to where the user dragged it to
self.plot_scroll.set(float(args[1]),(self.depth_index+1)/self.data_shape[2])
# reopen file
with h5py.File(self.filename,mode='r') as f:
self.axes.contourf(f[self.dataName][:,:,self.depth_index],cmap=self.curr_cmap)
# update canvas
self.fig_canvas.draw()
# update title
self.title.set(f"Displaying {self.dataName} [{self.depth_index}]")
def set_colormap(self):
ch = ColormapChooser(self.master).show()
if ch:
self.curr_cmap = ch
self.scroll_data("moveto",str(self.plot_scroll.get()[0]))
def update_line(self):
# remove first line from plot
self.axes.lines.pop(0)
with h5py.File(self.filename,mode='r') as f:
self.axes.plot(f[self.dataName][()],self.curr_lcol)
# update canvas
self.fig_canvas.draw()
def set_color(self):
col = colorchooser.askcolor()
if col[1]:
self.curr_lcol = col[1]
self.update_line()
width=canvasWidth,
xscrollcommand=xscrollbar.set,
yscrollcommand=yscrollbar.set)
canvas.place(x=canvasxPosition, y=canvasyPosition)
im = Image.open(imagePath.get())
im_width, im_height = im.size
im = im.resize((int(im_width * imageMagnification.get()),
int(im_height * imageMagnification.get())), Image.ANTIALIAS)
photo = ImageTk.PhotoImage(im)
image = canvas.create_image(0, 0, anchor=NW, image=photo)
canvas.grid(row=0, column=0, sticky=N + S + E + W)
canvas.config(scrollregion=canvas.bbox(ALL))
xscrollbar.config(command=canvas.xview)
yscrollbar.config(command=canvas.yview)
print(xscrollbar.get())
# ---- zoom function ----
zoomcycle = 0
zimg_id = None
if operatingSystem == 2:
def zoomer(event):
global zoomcycle
if (event.delta > 0):
if zoomcycle != 4: zoomcycle += 1
elif (event.delta < 0):
if zoomcycle != 0: zoomcycle -= 1
crop(event)
print("zoooom")
class Gui:
def __init__(self, root):
global CONFIG, CURPATH
self.root = root
root.geometry(
"%dx%d+0+0" %
(round(root.winfo_screenwidth() * 0.8),
round(root.winfo_screenheight() * 0.8))) #default window size 80%
root.title('Chords Autoscroll 0.9b')
root.iconphoto(
True, PhotoImage(file=os.path.join(CURPATH, "media", "icon.png")))
root.option_add("*Font", "Helvetica 12") #default font
root.protocol("WM_DELETE_WINDOW", self.onClose)
#general vars
if CONFIG.get("recent"):
self.file = FileManager(os.path.dirname(CONFIG.get("recent")[0]))
else:
self.file = FileManager()
self.speed = IntVar()
self.speed.set(30)
self.runningScroll = False
self.settingsPattern = re.compile(
'\n\nChordsAutoscrollSettings:(\{.*\})')
self.settings = {}
#menu
self.menubar = Menu(self.root)
self.filemenu = Menu(self.menubar, tearoff=0)
self.menubar.add_cascade(label="File", menu=self.filemenu)
self.filemenu.add_command(label="Open...",
command=lambda: self.openNewFile())
self.filemenu.add_separator()
self.filemenu.add_command(label="Save (Ctrl+S)",
command=lambda: self.saveFile(True))
self.filemenu.add_command(label="Save as...",
command=lambda: self.saveFile())
self.filemenu.add_separator()
self.filemenu.add_command(label="Close",
command=lambda: self.closeFile())
#recent files (I should update this at runtime...)
self.filemenu.add_separator()
self.recent = Menu(self.filemenu, tearoff=0)
self.filemenu.add_cascade(label="Recent files", menu=self.recent)
if CONFIG.get("recent") and len(CONFIG.get("recent")) > 0:
for n, p in enumerate(CONFIG.get("recent")):
self.recent.add_command(
label=str(n + 1) + ": " + str(p),
command=lambda p=p: self.openNewFile(str(p)))
self.root.config(menu=self.menubar)
#root frame
froot = Frame(root)
froot.pack(side=c.TOP, pady=5, padx=5, fill=c.BOTH, expand=1)
#main frame
fmain = Frame(froot)
fmain.pack(side=c.TOP, fill=c.BOTH, expand=1, anchor=c.N)
f1 = Frame(fmain) #text window frame
f1.pack(side=c.LEFT, fill=c.BOTH, expand=1)
self.txtMain = Text(
f1, height=1, width=1, font=("Courier", 14),
undo=True) #maybe we can set a DARK MODE to help reading
self.txtMain.pack(side=c.LEFT, fill=c.BOTH, expand=1)
self.scrollbar = Scrollbar(f1, command=self.txtMain.yview)
self.scrollbar.pack(side=c.LEFT, fill=c.Y)
self.txtMain.config(yscrollcommand=self.scrollbar.set)
f2 = Frame(fmain, width=100) #right buttons panel
f2.pack(side=c.RIGHT, anchor=c.N, padx=5, fill=c.X)
self.btnPlay = Button(f2,
text="Play",
relief=c.RAISED,
font=(None, 0, "bold"))
self.btnPlay.pack(side=c.TOP,
padx=5,
pady=5,
fill=c.BOTH,
expand=1,
ipady=6)
self.btnPlay['command'] = lambda: self.autoscroll()
f2_1 = Frame(f2) #child frame SPEED CONTROL
f2_1.pack(side=c.TOP, anchor=c.N, pady=(10, 0), fill=c.X)
Label(f2_1, text="Speed:", font=("*", 8), anchor=c.E).pack(side=c.LEFT,
padx=(2, 0))
Label(f2_1, font=("*", 8), anchor=c.W,
textvariable=self.speed).pack(side=c.LEFT, padx=(0, 2))
self.btnSpeedUp = Button(f2, text="+")
self.btnSpeedUp.pack(side=c.TOP, padx=5, pady=2, fill=c.BOTH, ipady=6)
self.btnSpeedUp['command'] = lambda: self.speedAdd(1)
self.btnSpeedDown = Button(f2, text="-")
self.btnSpeedDown.pack(side=c.TOP,
padx=5,
pady=(2, 5),
fill=c.BOTH,
ipady=6)
self.btnSpeedDown['command'] = lambda: self.speedAdd(-1)
f2_2 = Frame(f2, width=5) #child frame FONT SIZE
#f2_2.pack_propagate(0)
f2_2.pack(side=c.TOP, anchor=c.N, pady=(10, 0), fill=c.X)
self.btnTextUp = Button(f2, text="A", font=(None, 18))
self.btnTextUp.pack(side=c.TOP, padx=5, pady=2, fill=c.BOTH, ipady=0)
self.btnTextUp['command'] = lambda: self.changeFontSize(1)
self.btnTextDown = Button(f2, text="A", font=(None, 10))
self.btnTextDown.pack(side=c.TOP,
padx=5,
pady=(2, 5),
fill=c.BOTH,
ipady=8)
self.btnTextDown['command'] = lambda: self.changeFontSize(-1)
#credits
f4 = Frame(root)
f4.pack(side=c.BOTTOM, pady=0, padx=0, fill=c.X, anchor=c.S)
Label(
f4,
text=
"© 2017 Pasquale Lafiosca. Distributed under the terms of the Apache License 2.0.",
fg='#111111',
bg='#BBBBBB',
font=('', 9),
bd=0,
padx=10).pack(fill=c.X, ipady=2, ipadx=2)
#shortcuts
root.bind('<Control-s>', lambda e: self.saveFile(True))
root.bind('<Control-S>', lambda e: self.saveFile(True))
def startStop(e):
if self.runningScroll:
self.stopAutoscroll()
else:
self.autoscroll()
root.bind('<Control-space>', startStop)
def openNewFile(self, path=None):
global CONFIG
filename = None
if not path:
filename = filedialog.askopenfilename(
initialdir=self.file.getLastUsedDir(),
filetypes=[("Text files", "*.*")],
title="Select a text file to open")
else:
if os.path.isfile(path):
filename = path
else:
messagebox.showwarning("Not found",
"Selected file was not found. Sorry.")
if filename:
self.closeFile()
self.recent.delete(0, len(CONFIG.get("recent")) - 1)
CONFIG.insertRecentFile(filename)
for n, p in enumerate(CONFIG.get("recent")):
self.recent.add_command(
label=str(n + 1) + ": " + str(p),
command=lambda p=p: self.openNewFile(str(p)))
self.file.open(filename)
self.txtMain.delete(1.0, c.END)
content = self.file.getContent()
#Settings
m = re.search(self.settingsPattern, content)
if m and m.group(1):
try:
self.settings = json.loads(
m.group(1)) # Loads settings from file
self.speed.set(self.settings["Speed"])
self._setFontSize(self.settings["Size"])
except:
messagebox.showwarning("Warning",
"Cannot load setting data. Sorry.")
self._setSettingsData()
else:
self._setSettingsData()
content = re.sub(
self.settingsPattern, '',
content) # Remove settings string before write on screen
self.txtMain.insert(1.0, content)
def _setSettingsData(self):
self.settings = {
"Speed": self.speed.get(),
"Size": self._getFontSize()
}
def _settingsChanged(self):
if "Speed" in self.settings and "Size" in self.settings and (
self.settings["Speed"] != self.speed.get()
or self.settings["Size"] != self._getFontSize()):
return True
else:
return False
def saveFile(self, current=False):
global CONFIG
if current:
filename = self.file.getLastFile()
if not current or not filename:
filename = filedialog.asksaveasfilename(
initialdir=self.file.getLastUsedDir(),
initialfile=self.file.getLastFile(),
filetypes=[("Text files", "*.txt")],
title="Select destionation",
defaultextension=".txt")
if filename:
CONFIG.insertRecentFile(filename)
self.file.open(filename)
self._setSettingsData()
self.file.writeContent(
self.txtMain.get(1.0, c.END)[:-1] +
"\n\nChordsAutoscrollSettings:" + json.dumps(self.settings))
def closeFile(self):
if not self.txtMain.get(1.0, c.END)[:-1]: # Empty view
return True
if self.file.hasChanged(
hashlib.md5(
(self.txtMain.get(1.0, c.END)[:-1] +
"\n\nChordsAutoscrollSettings:" +
json.dumps(self.settings)
).encode()).hexdigest()) or self._settingsChanged():
if messagebox.askyesno(
"Save changes",
"Current document has been modified. Do you want to save changes?"
):
self.saveFile()
self.txtMain.delete(1.0, c.END)
self.file.close()
return True
def mainloop(self):
self.root.mainloop()
def onClose(self):
if messagebox.askokcancel("Quit", "Do you want to quit?"):
self.closeFile()
self.root.destroy()
def _getFontSize(self):
return font.Font(font=self.txtMain["font"])["size"]
def _setFontSize(self, newsize):
f = font.Font(font=self.txtMain["font"])
f.config(size=newsize)
self.txtMain.config(font=f)
self.txtMain.update_idletasks()
def changeFontSize(self, a):
f = font.Font(font=self.txtMain["font"])
newsize = f["size"] + a
if (newsize < 8 or newsize > 72): #limits
return
f.config(size=newsize)
self.txtMain.config(font=f)
self.txtMain.update_idletasks()
def autoscroll(self):
if not self.runningScroll and threading.active_count(
) < 2: # Check to avoid multiple scrolling threads
if (float(self.scrollbar.get()[1]) == 1
): #if we are at the end, let's start from beginning
self.txtMain.see(1.0)
self.runningScroll = True
#INITIAL DELAY
self.txtMain.mark_set("initialDelay", 1.0)
self.txtMain.mark_gravity("initialDelay", c.RIGHT)
self.txtMain.insert("initialDelay",
os.linesep * 20) # SET CONSTANT HERE
self.txtMain.config(state=c.DISABLED)
self.txtMain.update_idletasks()
threading.Thread(target=self.autoscroll_callback,
name="ScrollingThread",
daemon=True).start()
self.btnPlay.config(text="Stop",
relief=c.SUNKEN,
command=lambda: self.stopAutoscroll())
self.btnPlay.update_idletasks()
def autoscroll_callback(self):
while (float(self.scrollbar.get()[1]) < 1 and self.runningScroll):
self.txtMain.yview(c.SCROLL, 1, c.UNITS)
end = time.time() + 60 / self.speed.get()
while (time.time() < end
and self.runningScroll): # trick to stop immediately
time.sleep(.1)
if self.runningScroll:
self.stopAutoscroll()
def stopAutoscroll(self):
self.runningScroll = False
self.txtMain.config(state=c.NORMAL)
self.txtMain.delete(1.0, "initialDelay")
self.txtMain.mark_unset("initialDelay")
self.txtMain.update_idletasks()
self.btnPlay.config(text="Play",
relief=c.RAISED,
command=lambda: self.autoscroll())
self.btnPlay.update_idletasks()
def speedAdd(self, n):
n = self.speed.get() + n
if (n > 0 and n < 1000):
self.speed.set(n)
class Chatbox(object):
def __init__(self,
master,
my_nick=None,
command=None,
topic=None,
entry_controls=None,
maximum_lines=None,
timestamp_template=None,
scrollbar_background=None,
scrollbar_troughcolor=None,
history_background=None,
history_font=None,
history_padx=None,
history_pady=None,
history_width=None,
entry_font=None,
entry_background=None,
entry_foreground=None,
label_template=u"{nick}",
label_font=None,
logging_file=None,
tags=None):
self.interior = Frame(master, class_="Chatbox")
self._command = command
self._is_empty = True
self._maximum_lines = maximum_lines
self._timestamp_template = timestamp_template
self._command = command
self._label_template = label_template
self._logging_file = logging_file
if logging_file is None:
self._log = None
else:
try:
self._log = open(logging_file, "r")
except:
self._log = None
top_frame = Frame(self.interior, class_="Top")
top_frame.pack(expand=True, fill=BOTH)
self._textarea = Text(top_frame, state=DISABLED)
self._vsb = Scrollbar(top_frame,
takefocus=0,
command=self._textarea.yview)
self._vsb.pack(side=RIGHT, fill=Y)
self._textarea.pack(side=RIGHT, expand=YES, fill=BOTH)
self._textarea["yscrollcommand"] = self._vsb.set
entry_frame = Frame(self.interior, class_="Chatbox_Entry")
entry_frame.pack(fill=X, anchor=N)
if entry_controls is not None:
controls_frame = Frame(entry_frame, class_="Controls")
controls_frame.pack(fill=X)
entry_controls(controls_frame, chatbox=self)
bottom_of_entry_frame = Frame(entry_frame)
self._entry_label = Label(bottom_of_entry_frame)
self._entry = Entry(bottom_of_entry_frame)
else:
self._entry_label = Label(entry_frame)
self._entry = Entry(entry_frame)
self._entry.pack(side=LEFT, expand=YES, fill=X)
self._entry.bind("<Return>", self._on_message_sent)
self._entry.focus()
if history_background:
self._textarea.configure(background=history_background)
if history_font:
self._textarea.configure(font=history_font)
if history_padx:
self._textarea.configure(padx=history_padx)
if history_width:
self._textarea.configure(width=history_width)
if history_pady:
self._textarea.configure(pady=history_pady)
if scrollbar_background:
self._vsb.configure(background=scrollbar_background)
if scrollbar_troughcolor:
self._vsb.configure(troughcolor=scrollbar_troughcolor)
if entry_font:
self._entry.configure(font=entry_font)
if entry_background:
self._entry.configure(background=entry_background)
if entry_foreground:
self._entry.configure(foreground=entry_foreground)
if label_font:
self._entry_label.configure(font=label_font)
if tags:
for tag, tag_config in tags.items():
self._textarea.tag_config(tag, **tag_config)
self.set_nick(my_nick)
@property
def topic(self):
return
@topic.setter
def topic(self, topic):
return
def focus_entry(self):
self._entry.focus()
def bind_entry(self, event, handler):
self._entry.bind(event, handler)
def bind_textarea(self, event, handler):
self._textarea.bind(event, handler)
def bind_tag(self, tagName, sequence, func, add=None):
self._textarea.tag_bind(tagName, sequence, func, add=add)
def focus(self):
self._entry.focus()
def user_message(self, nick, content):
if self._timestamp_template is None:
self._write((u"%s:" % nick, "nick"), " ",
(content, "user_message"))
else:
timestamp = datetime.datetime.now().strftime(
self._timestamp_template)
self._write((timestamp, "timestamp"), " ", (u"%s:" % nick, "nick"),
" ", (content, "user_message"))
def notification_message(self, content, tag=None):
if tag is None:
tag = "notification"
self._write((content, tag))
notification = notification_message
def notification_of_private_message(self, content, from_, to):
if self._timestamp_template is None:
self.notification_message(
u"{from_} -> {to}: {content}".format(from_=from_,
to=to,
content=content),
"notification_of_private_message")
else:
timestamp = datetime.datetime.now().strftime(
self._timestamp_template)
self.notification_message(
u"{timestamp} {from_} -> {to}: {content}".format(
timestamp=timestamp, from_=from_, to=to, content=content),
"notification_of_private_message")
def new_message(self, message):
if isinstance(message, User_Message):
self.user_message(message.content, message.nick)
elif isinstance(message, Notification_Message):
self.notification(message.content, message.tag)
elif isinstance(message, Notification_Of_Private_Message):
self.notification_of_private_message(message.from_, message.to,
message.content)
else:
raise Exception("Bad message")
def tag(self, tag_name, **kwargs):
self._textarea.tag_config(tag_name, **kwargs)
def clear(self):
self._is_empty = True
self._textarea.delete('1.0', END)
@property
def logging_file(self):
return self._logging_file
def send(self, content):
if self._my_nick is None:
raise Exception("Nick not set")
self.user_message(self._my_nick, content)
def _filter_text(self, text):
return "".join(ch for ch in text if ch <= u"\uFFFF")
def _write(self, *args):
if len(args) == 0: return
relative_position_of_scrollbar = self._vsb.get()[1]
self._textarea.config(state=NORMAL)
if self._is_empty:
self._is_empty = False
else:
self._textarea.insert(END, "\n")
if self._log is not None:
self._log.write("\n")
for arg in args:
if isinstance(arg, tuple):
text, tag = arg
# Parsing not allowed characters
text = self._filter_text(text)
self._textarea.insert(END, text, tag)
else:
text = arg
text = self._filter_text(text)
self._textarea.insert(END, text)
if self._log is not None:
self._log.write(text)
if self._maximum_lines is not None:
start_line = int(self._textarea.index('end-1c').split('.')
[0]) - self._maximum_lines
if lines_to_delete >= 1:
self._textarea.delete('%s.0' % start_line, END)
self._textarea.config(state=DISABLED)
if relative_position_of_scrollbar == 1:
self._textarea.yview_moveto(1)
def _on_message_sent(self, event):
message = self._entry.get()
self._entry.delete(0, END)
self.send(message)
if self._command:
self._command(message)
def set_nick(self, my_nick):
self._my_nick = my_nick
if my_nick:
text = self._label_template.format(nick=my_nick)
self._entry_label["text"] = text
self._entry_label.pack(side=LEFT, padx=(5, 5), before=self._entry)
else:
self._entry_label.pack_forget()
class ScrollableFrame(Frame):
"""
A wrapper for the Frame class to make it scrollable.
To make use of this fuctionality, pack anything into the .frame Frame of
this object
"""
def __init__(self, master, *args, **kwargs):
self.master = master
Frame.__init__(self, self.master, *args, **kwargs)
# Block resizing. This is required because we bind the resizing code to
# a <Configure> tag. This would result in one resizing to a specific
# size to call self.configure_view again but with no arguments.
self.block_resize = False
# cached canvas view dimensions
self._view_dimensions = None
self.grid(sticky='nsew')
self.grid_rowconfigure(0, weight=1)
self.grid_columnconfigure(0, weight=1)
self.vsb = Scrollbar(self, orient='vertical')
self.hsb = Scrollbar(self, orient='horizontal')
self.canvas = Canvas(self,
bd=0,
bg=OSCONST.CANVAS_BG,
highlightthickness=0)
self.canvas.grid(row=0, column=0, sticky='nsew')
# configure scroll bars
self.hsb.config(command=self.canvas.xview)
self.canvas.config(xscrollcommand=self.hsb.set)
self.hsb.grid(row=1, column=0, sticky='ew')
self.vsb.config(command=self.canvas.yview)
self.canvas.config(yscrollcommand=self.vsb.set)
self.vsb.grid(row=0, column=1, sticky='ns')
# everything will go in this frame
self.frame = Frame(self.canvas)
self.frame.grid(row=0, column=0, sticky='nsew')
self.canvas.create_window((0, 0), window=self.frame, anchor="nw")
self.hsb.config(command=self.canvas.xview)
self.vsb.config(command=self.canvas.yview)
self.bind("<Configure>", self.configure_view)
# mouse wheel scroll bindings c/o Mikhail. T on stackexchange:
# https://stackoverflow.com/a/37858368
self.bind('<Enter>', self._bind_to_mousewheel)
self.bind('<Leave>', self._unbind_to_mousewheel)
#region public methods
def configure_view(self,
event=None,
move_to_bottom=False,
max_size=(None, None),
resize_canvas='xy',
needs_update=False):
"""
Configure the size of the scrollable frame.
Parameters
----------
move_to_bottom : bool
Whether or not to move the scroll bar all the way to the bottom.
max_size : tuple of int's
Maximum size that the scrollable canvas can be. This is a tuple of
length 2. (X, Y).
resize_canvas : str
The directions along which the scrollable canvas should be
stretched. One of `'x'`, `'y'`, or `'xy'` for the x-direction,
y-direction, or both respectively.
"""
if not needs_update:
return
x_size = None
y_size = None
bbox = self.canvas.bbox(ALL)
if 'x' in resize_canvas:
# find the new x size to draw
if max_size[0] is not None:
x_size = max(min(max_size[0], bbox[2]),
self._view_dimensions[0])
else:
x_size = bbox[2]
if 'y' in resize_canvas:
# find the new y size to draw
if max_size[1] is not None:
y_size = max(min(max_size[1], bbox[3]),
self._view_dimensions[1])
else:
y_size = bbox[3]
self._resize_canvas(x_size, y_size)
xview_size = int(self.canvas.config('width')[4])
yview_size = int(self.canvas.config('height')[4])
self.canvas.config(scrollregion=bbox)
self._view_dimensions = (xview_size, yview_size)
if move_to_bottom:
self.canvas.yview_moveto(1.0)
def reattach(self):
self.canvas.create_window((0, 0), window=self.frame, anchor="nw")
#region private methods
def _bind_to_mousewheel(self, event):
self.canvas.bind_all("<MouseWheel>", self._on_mousewheel)
def _on_mousewheel(self, event):
if self.vsb.get() != (0.0, 1.0):
if os_name() == 'Windows':
self.canvas.yview_scroll(int(-1 * (event.delta / 120)),
"units")
else:
self.canvas.yview_scroll(-event.delta, "units")
def _resize_canvas(self, width, height):
"""Resize the canvas to the specified size
Parameters
----------
width : int
Width of the frame.
height : int
Height of the frame.
"""
if self.block_resize or (width is None and height is None):
return
if width is not None or height is not None:
self.block_resize = True
else:
self.block_resize = False
canvas_config = dict()
if width is not None:
canvas_config['width'] = width
if height is not None:
canvas_config['height'] = height
self.canvas.config(**canvas_config)
def _unbind_to_mousewheel(self, event):
self.canvas.unbind_all("<MouseWheel>")
