[英]ttk.Treeview - Can't change row height
我正在使用可以在此鏈接中找到的ttkcalendar.py
。
我已經將它改編為在Python 3.3
基本上我想要做的是將這個日歷小部件輸入到我的 Tkinter 應用程序中,它運行良好並且沒有問題。
我希望克服的問題是:
bold
。 -已完成treeview
中行的高度,因為在以前的嘗試中可以增加字體大小,但行高不會隨字體大小而增加。 -仍在等待幫助提前致謝。
編輯 1:
在下面找到整個程序的代碼:
import calendar
import tkinter as Tkinter
import tkinter.font as tkFont
from tkinter import ttk #Imports ttk Module
def get_calendar(locale, fwday):
#Instantiate Proper Calendar Class
if locale is None:
return calendar.TextCalendar(fwday)
else:
return calendar.LocaleTextCalendar(fwday, locale)
class Calendar(ttk.Frame):
datetime = calendar.datetime.datetime
timedelta = calendar.datetime.timedelta
def __init__(self, master=None, **kw):
"""
WIDGET-SPECIFIC OPTIONS
locale, firstweekday, year, month, selectbackground,
selectforeground
"""
#Remove Custom Options From kw BEFORE Initializating ttk.Frame
fwday = kw.pop('firstweekday', calendar.MONDAY)
year = kw.pop('year', self.datetime.now().year)
month = kw.pop('month', self.datetime.now().month)
locale = kw.pop('locale', None)
sel_bg = kw.pop('selectbackground', '#EEEEEE')
sel_fg = kw.pop('selectforeground', '#B6333B')
self._date = self.datetime(year, month, 1)
self._selection = None #No Date Selected
ttk.Frame.__init__(self, master, **kw)
self._cal = get_calendar(locale, fwday)
self.__setup_styles() #Creates Custom Styles
self.__place_widgets() #Pack/Grid Used Widgets
self.__config_calendar() #Adjust Calendar Columns & Setup Tags
#Configure a Canvas & Proper Bindings for Selecting Dates
self.__setup_selection(sel_bg, sel_fg)
#Store Item ids - Used for Insertion Later On
self._items = [self._calendar.insert('', 'end', values='')
for _ in range(6)]
#Insert Dates in the Currently Empty Calendar
self._build_calendar()
#Set Minimal Size for Widget
self._calendar.bind('<Map>', self.__minsize)
def __setitem__(self, item, value):
if item in ('year', 'month'):
raise AttributeError("attribute '%s' is not writeable" % item)
elif item == 'selectbackground':
self._canvas['background'] = value
elif item == 'selectforeground':
self._canvas.itemconfigure(self._canvas.text, item=value)
else:
ttk.Frame.__setitem__(self, item, value)
def __getitem__(self, item):
if item in ('year', 'month'):
return getattr(self._date, item)
elif item == 'selectbackground':
return self._canvas['background']
elif item == 'selectforeground':
return self._canvas.itemcget(self._canvas.text, 'fill')
else:
r = ttk.tclobjs_to_py({item: ttk.Frame.__getitem__(self, item)})
return r[item]
def __setup_styles(self):
#CUSTOM ttk Styles
style = ttk.Style(self.master)
arrow_layout = lambda dir: (
[('Button.focus', {'children': [('Button.%sarrow' % dir, None)]})]
)
style.layout('L.TButton', arrow_layout('left'))
style.layout('R.TButton', arrow_layout('right'))
def __place_widgets(self):
#Header Frame & Widgets
hframe = ttk.Frame(self)
lbtn = ttk.Button(hframe, style='L.TButton', command=self._prev_month)
rbtn = ttk.Button(hframe, style='R.TButton', command=self._next_month)
self._header = ttk.Label(hframe, width=15, anchor='center', font='Arial 20')
#Main Calendar
self._calendar = ttk.Treeview(show='', selectmode='none', height='6')
#Pack The Widgets
hframe.pack(in_=self, side='top', pady=4, anchor='center')
lbtn.grid(in_=hframe)
self._header.grid(in_=hframe, column=1, row=0, padx=12)
rbtn.grid(in_=hframe, column=2, row=0)
self._calendar.pack(in_=self, expand=1, fill='both', side='bottom')
def __config_calendar(self):
cols = self._cal.formatweekheader(3).split()
self._calendar['columns'] = cols
self._calendar.tag_configure('header', background='grey90', font='Arial 20')
self._calendar.insert('', 'end', values=cols, tag=('header', 'dayFont'))
#Change Font of dayFont TAG
self._calendar.tag_configure('dayFont', font='Arial 20')
#Adjust Column Widths
font = tkFont.Font(size=20)
maxwidth = max(font.measure(col) for col in cols)
for col in cols:
self._calendar.column(col, width=maxwidth, minwidth=maxwidth, anchor='c')
def __setup_selection(self, sel_bg, sel_fg):
self._font = tkFont.Font()
canvas = Tkinter.Canvas(self._calendar, background=sel_bg, borderwidth=0, highlightthickness=0)
self._canvas = canvas
canvas.text = canvas.create_text(0, 0, fill=sel_fg, anchor='c')
canvas.bind('<ButtonPress-1>', lambda evt: canvas.place_forget())
self._calendar.bind('<Configure>', lambda evt: canvas.place_forget())
self._calendar.bind('<ButtonPress-1>', self._pressed)
def __minsize(self, evt):
width, height = self._calendar.master.geometry().split('x')
height = height[:height.index('+')]
self._calendar.master.minsize(width, height)
def _build_calendar(self):
year, month = self._date.year, self._date.month
#Update Header Text (Month, YEAR)
header = self._cal.formatmonthname(year, month, 0)
self._header['text'] = header.title()
#Update Calendar Showing Dates
cal = self._cal.monthdayscalendar(year, month)
for indx, item in enumerate(self._items):
week = cal[indx] if indx < len(cal) else []
fmt_week = [('%02d' % day) if day else '' for day in week]
self._calendar.item(item, values=fmt_week, tag='bodyFont')
self._calendar.tag_configure('bodyFont', font='Arial 10')
def _show_selection(self, text, bbox): #SELECTION FONT
"""Configure canvas for a new selection."""
x, y, width, height = bbox
textw = self._font.measure(text)
canvas = self._canvas
canvas.configure(width=width, height=height)
canvas.coords(canvas.text, width - textw, height / 2 - 1)
canvas.itemconfigure(canvas.text, text=text, font='Arial 15 bold')
canvas.place(in_=self._calendar, x=x, y=y)
#Callbacks
def _pressed(self, evt):
"""Clicked somewhere in the calendar."""
x, y, widget = evt.x, evt.y, evt.widget
item = widget.identify_row(y)
column = widget.identify_column(x)
if not column or not item in self._items: #Clicked in the Weekdays Row or Just Outside The Columns
return
item_values = widget.item(item)['values']
if not len(item_values): #Row is Empty For This Month
return
text = item_values[int(column[1]) - 1]
if not text: #Date is Empty
return
bbox = widget.bbox(item, column)
if not bbox: #Calendar is not Visible Yet
return
#Update & Then Show Selection
text = '%02d' % text
self._selection = (text, item, column)
self._show_selection(text, bbox)
def _prev_month(self):
"""Updated calendar to show the previous month."""
self._canvas.place_forget()
self._date = self._date - self.timedelta(days=1)
self._date = self.datetime(self._date.year, self._date.month, 1)
#Reconstruct Calendar
self._build_calendar()
def _next_month(self):
"""Update calendar to show the next month."""
self._canvas.place_forget()
year, month = self._date.year, self._date.month
self._date = self._date + self.timedelta(
days=calendar.monthrange(year, month)[1] + 1)
self._date = self.datetime(self._date.year, self._date.month, 1)
self._build_calendar()
#Properties
#-----------------------------------------------------
@property
def selection(self):
"""Return a datetime representing the current selected date."""
if not self._selection:
return None
year, month = self._date.year, self._date.month
return self.datetime(year, month, int(self._selection[0]))
#----------------------------------
編輯2:
如何更改Treeview
的relief
?
也許和你一樣,我希望線路在必要時擴展。 但是我用下面的代碼確認了這個問題,省略了解決方案(兩條樣式行)。 當我在這里找不到解決方案和相應的樣式頁面時,我用谷歌搜索並找到了這個。 向下滾動到 Emiliano 的答案,以及以下一些內容(還有一個縮進選項)。
import tkinter as tk
from tkinter import ttk
root = tk.Tk()
root.geometry('500x200')
style = ttk.Style(root)
style.configure('Treeview', rowheight=40) #SOLUTION
tree = ttk.Treeview(root)
tree.insert('', 0, text='Line 1 of many XXX', tags='T')
tree.insert('', 1, text='Line 2 of many XXX', tags='T')
tree.insert('', 2, text='Line 3 of many XXX', tags='T')
tree.column('#0', stretch=True)
tree.tag_configure('T', font='Arial 20')
tree.pack(fill='x')
以上,省略了答案,是展示問題的最小代碼示例。 這種東西要發帖!
編輯 1:
為了使日歷小部件可以在另一個應用程序中正確導入和使用,它應該使用自定義樣式,因此它的樣式不會影響應用程序中的任何其他樹視圖。
style.configure('Calendar.Treeview', rowheight=40)
tree = ttk.Treeview(root, style='Calendar.Treeview')
編輯2:
我只是自己學習 ttk 樣式。 為了回答您的問題,我轉到了這個樣式文檔,並在運行上述代碼后在 Idle's Shell 中嘗試了以下內容,並在 Edit 1 中進行了兩個修改。
>>> style.layout('Calendar.Treeview')
[('Treeview.field', {'sticky': 'nswe', 'children': [('Treeview.padding',
{'sticky': 'nswe', 'children': [('Treeview.treearea', {'sticky': 'nswe'})]})], 'border': '1'})]
>>> style.element_options('Calendar.Treeview.border')
('-relief',)
>>> style.lookup('Calendar.Treeview.border', 'relief')
''
>>> style.configure('Calendar.Treeview.border', relief='raised')
{}
我沒有看到任何邊框,也沒有看到設置的任何效果。 也許救濟適用於列之間的邊界。 我不知道。 (請注意,更改行高是立即可用的,因此配置是“實時”的。)
我發現 Tkinter Font 對象有一個 metrics() 方法,該方法將其高度設為“linespace”。 這允許動態縮放行高:
try:
from tkinter.font import Font
from tkinter.ttk import Style, Treeview
from tkinter import *
except:
from tkFont import Font
from ttk import Style, Treeview
from Tkinter import *
font=Font(family='Arial', size=20)
font.metrics()
#output: {'ascent': 31, 'descent': 7, 'linespace': 38, 'fixed': 0}
有了這個,你可以得到字體高度:
font.metrics()['linespace']
#output: 38
然后使用它在 Treeview 小部件中設置行高:
fontheight=font.metrics()['linespace']
style=Style()
style.configure('Calendar.Treeview', font=font, rowheight=fontheight)
tree=Treeview(style='Calendar.Treeview')
更改字體對象參數可以輕松地更新 Treeview 小部件,但行高不會更新,需要重做。 例如,使用鍵盤快捷鍵縮放字體大小可能如下所示:
def scaleup(event):
font['size']+=1
style.configure('Calendar.Treeview', rowheight=font.metrics()['linespace'])
def scaledown(event):
font['size']-=1
style.configure('Calendar.Treeview', rowheight=font.metrics()['linespace'])
tree.bind('<Control-equal>', scaleup)
tree.bind('<Control-minus>', scaledown)
我實際上想用 Control-MouseWheel 做同樣的事情,但還沒有弄清楚行為(很高興聽到它是如何工作的)。
希望這能派上用場。
如何更改樹視圖中行的高度,因為在以前的嘗試中可以增加字體大小,但行高不會隨字體大小而增加。 - 仍在等待幫助
在你仍然在等待這一個幫助的情況下,有一種方法來改變行的高度,雖然,谷歌組線程說,它不是正式Tk的支持:
#apply any configuration options
ttk.Style().configure('Treeview',rowheight=30)
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