source: vendor/python/2.5/Tools/pynche/TextViewer.py

Last change on this file was 3225, checked in by bird, 18 years ago

Python 2.5
File size: 6.7 KB
Line 
1"""TextViewer class.
2
3The TextViewer allows you to see how the selected color would affect various
4characteristics of a Tk text widget. This is an output viewer only.
5
6In the top part of the window is a standard text widget with some sample text
7in it. You are free to edit this text in any way you want (BAW: allow you to
8change font characteristics). If you want changes in other viewers to update
9text characteristics, turn on Track color changes.
10
11To select which characteristic tracks the change, select one of the radio
12buttons in the window below. Text foreground and background affect the text
13in the window above. The Selection is what you see when you click the middle
14button and drag it through some text. The Insertion is the insertion cursor
15in the text window (which only has a background).
16"""
17
18from Tkinter import *
19import ColorDB
20
21ADDTOVIEW = 'Text Window...'
22
23
24
25
26class TextViewer:
27 def __init__(self, switchboard, master=None):
28 self.__sb = switchboard
29 optiondb = switchboard.optiondb()
30 root = self.__root = Toplevel(master, class_='Pynche')
31 root.protocol('WM_DELETE_WINDOW', self.withdraw)
32 root.title('Pynche Text Window')
33 root.iconname('Pynche Text Window')
34 root.bind('<Alt-q>', self.__quit)
35 root.bind('<Alt-Q>', self.__quit)
36 root.bind('<Alt-w>', self.withdraw)
37 root.bind('<Alt-W>', self.withdraw)
38 #
39 # create the text widget
40 #
41 self.__text = Text(root, relief=SUNKEN,
42 background=optiondb.get('TEXTBG', 'black'),
43 foreground=optiondb.get('TEXTFG', 'white'),
44 width=35, height=15)
45 sfg = optiondb.get('TEXT_SFG')
46 if sfg:
47 self.__text.configure(selectforeground=sfg)
48 sbg = optiondb.get('TEXT_SBG')
49 if sbg:
50 self.__text.configure(selectbackground=sbg)
51 ibg = optiondb.get('TEXT_IBG')
52 if ibg:
53 self.__text.configure(insertbackground=ibg)
54 self.__text.pack()
55 self.__text.insert(0.0, optiondb.get('TEXT', '''\
56Insert some stuff here and play
57with the buttons below to see
58how the colors interact in
59textual displays.
60
61See how the selection can also
62be affected by tickling the buttons
63and choosing a color.'''))
64 insert = optiondb.get('TEXTINS')
65 if insert:
66 self.__text.mark_set(INSERT, insert)
67 try:
68 start, end = optiondb.get('TEXTSEL', (6.0, END))
69 self.__text.tag_add(SEL, start, end)
70 except ValueError:
71 # selection wasn't set
72 pass
73 self.__text.focus_set()
74 #
75 # variables
76 self.__trackp = BooleanVar()
77 self.__trackp.set(optiondb.get('TRACKP', 0))
78 self.__which = IntVar()
79 self.__which.set(optiondb.get('WHICH', 0))
80 #
81 # track toggle
82 self.__t = Checkbutton(root, text='Track color changes',
83 variable=self.__trackp,
84 relief=GROOVE,
85 command=self.__toggletrack)
86 self.__t.pack(fill=X, expand=YES)
87 frame = self.__frame = Frame(root)
88 frame.pack()
89 #
90 # labels
91 self.__labels = []
92 row = 2
93 for text in ('Text:', 'Selection:', 'Insertion:'):
94 l = Label(frame, text=text)
95 l.grid(row=row, column=0, sticky=E)
96 self.__labels.append(l)
97 row += 1
98 col = 1
99 for text in ('Foreground', 'Background'):
100 l = Label(frame, text=text)
101 l.grid(row=1, column=col)
102 self.__labels.append(l)
103 col += 1
104 #
105 # radios
106 self.__radios = []
107 for col in (1, 2):
108 for row in (2, 3, 4):
109 # there is no insertforeground option
110 if row==4 and col==1:
111 continue
112 r = Radiobutton(frame, variable=self.__which,
113 value=(row-2)*2 + col-1,
114 command=self.__set_color)
115 r.grid(row=row, column=col)
116 self.__radios.append(r)
117 self.__toggletrack()
118
119 def __quit(self, event=None):
120 self.__root.quit()
121
122 def withdraw(self, event=None):
123 self.__root.withdraw()
124
125 def deiconify(self, event=None):
126 self.__root.deiconify()
127
128 def __forceupdate(self, event=None):
129 self.__sb.update_views_current()
130
131 def __toggletrack(self, event=None):
132 if self.__trackp.get():
133 state = NORMAL
134 fg = self.__radios[0]['foreground']
135 else:
136 state = DISABLED
137 fg = self.__radios[0]['disabledforeground']
138 for r in self.__radios:
139 r.configure(state=state)
140 for l in self.__labels:
141 l.configure(foreground=fg)
142
143 def __set_color(self, event=None):
144 which = self.__which.get()
145 text = self.__text
146 if which == 0:
147 color = text['foreground']
148 elif which == 1:
149 color = text['background']
150 elif which == 2:
151 color = text['selectforeground']
152 elif which == 3:
153 color = text['selectbackground']
154 elif which == 5:
155 color = text['insertbackground']
156 try:
157 red, green, blue = ColorDB.rrggbb_to_triplet(color)
158 except ColorDB.BadColor:
159 # must have been a color name
160 red, green, blue = self.__sb.colordb().find_byname(color)
161 self.__sb.update_views(red, green, blue)
162
163 def update_yourself(self, red, green, blue):
164 if self.__trackp.get():
165 colorname = ColorDB.triplet_to_rrggbb((red, green, blue))
166 which = self.__which.get()
167 text = self.__text
168 if which == 0:
169 text.configure(foreground=colorname)
170 elif which == 1:
171 text.configure(background=colorname)
172 elif which == 2:
173 text.configure(selectforeground=colorname)
174 elif which == 3:
175 text.configure(selectbackground=colorname)
176 elif which == 5:
177 text.configure(insertbackground=colorname)
178
179 def save_options(self, optiondb):
180 optiondb['TRACKP'] = self.__trackp.get()
181 optiondb['WHICH'] = self.__which.get()
182 optiondb['TEXT'] = self.__text.get(0.0, 'end - 1c')
183 optiondb['TEXTSEL'] = self.__text.tag_ranges(SEL)[0:2]
184 optiondb['TEXTINS'] = self.__text.index(INSERT)
185 optiondb['TEXTFG'] = self.__text['foreground']
186 optiondb['TEXTBG'] = self.__text['background']
187 optiondb['TEXT_SFG'] = self.__text['selectforeground']
188 optiondb['TEXT_SBG'] = self.__text['selectbackground']
189 optiondb['TEXT_IBG'] = self.__text['insertbackground']
Note: See TracBrowser for help on using the repository browser.