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