| """TextViewer class. |
| |
| The TextViewer allows you to see how the selected color would affect various |
| characteristics of a Tk text widget. This is an output viewer only. |
| |
| In the top part of the window is a standard text widget with some sample text |
| in it. You are free to edit this text in any way you want (BAW: allow you to |
| change font characteristics). If you want changes in other viewers to update |
| text characteristics, turn on Track color changes. |
| |
| To select which characteristic tracks the change, select one of the radio |
| buttons in the window below. Text foreground and background affect the text |
| in the window above. The Selection is what you see when you click the middle |
| button and drag it through some text. The Insertion is the insertion cursor |
| in the text window (which only has a background). |
| """ |
| |
| from Tkinter import * |
| import ColorDB |
| |
| ADDTOVIEW = 'Text Window...' |
| |
| |
| |
| class TextViewer: |
| def __init__(self, switchboard, master=None): |
| self.__sb = switchboard |
| optiondb = switchboard.optiondb() |
| root = self.__root = Toplevel(master, class_='Pynche') |
| root.protocol('WM_DELETE_WINDOW', self.withdraw) |
| root.title('Pynche Text Window') |
| root.iconname('Pynche Text Window') |
| root.bind('<Alt-q>', self.__quit) |
| root.bind('<Alt-Q>', self.__quit) |
| root.bind('<Alt-w>', self.withdraw) |
| root.bind('<Alt-W>', self.withdraw) |
| # |
| # create the text widget |
| # |
| self.__text = Text(root, relief=SUNKEN, |
| background=optiondb.get('TEXTBG', 'black'), |
| foreground=optiondb.get('TEXTFG', 'white'), |
| width=35, height=15) |
| sfg = optiondb.get('TEXT_SFG') |
| if sfg: |
| self.__text.configure(selectforeground=sfg) |
| sbg = optiondb.get('TEXT_SBG') |
| if sbg: |
| self.__text.configure(selectbackground=sbg) |
| ibg = optiondb.get('TEXT_IBG') |
| if ibg: |
| self.__text.configure(insertbackground=ibg) |
| self.__text.pack() |
| self.__text.insert(0.0, optiondb.get('TEXT', '''\ |
| Insert some stuff here and play |
| with the buttons below to see |
| how the colors interact in |
| textual displays. |
| |
| See how the selection can also |
| be affected by tickling the buttons |
| and choosing a color.''')) |
| insert = optiondb.get('TEXTINS') |
| if insert: |
| self.__text.mark_set(INSERT, insert) |
| try: |
| start, end = optiondb.get('TEXTSEL', (6.0, END)) |
| self.__text.tag_add(SEL, start, end) |
| except ValueError: |
| # selection wasn't set |
| pass |
| self.__text.focus_set() |
| # |
| # variables |
| self.__trackp = BooleanVar() |
| self.__trackp.set(optiondb.get('TRACKP', 0)) |
| self.__which = IntVar() |
| self.__which.set(optiondb.get('WHICH', 0)) |
| # |
| # track toggle |
| self.__t = Checkbutton(root, text='Track color changes', |
| variable=self.__trackp, |
| relief=GROOVE, |
| command=self.__toggletrack) |
| self.__t.pack(fill=X, expand=YES) |
| frame = self.__frame = Frame(root) |
| frame.pack() |
| # |
| # labels |
| self.__labels = [] |
| row = 2 |
| for text in ('Text:', 'Selection:', 'Insertion:'): |
| l = Label(frame, text=text) |
| l.grid(row=row, column=0, sticky=E) |
| self.__labels.append(l) |
| row += 1 |
| col = 1 |
| for text in ('Foreground', 'Background'): |
| l = Label(frame, text=text) |
| l.grid(row=1, column=col) |
| self.__labels.append(l) |
| col += 1 |
| # |
| # radios |
| self.__radios = [] |
| for col in (1, 2): |
| for row in (2, 3, 4): |
| # there is no insertforeground option |
| if row==4 and col==1: |
| continue |
| r = Radiobutton(frame, variable=self.__which, |
| value=(row-2)*2 + col-1, |
| command=self.__set_color) |
| r.grid(row=row, column=col) |
| self.__radios.append(r) |
| self.__toggletrack() |
| |
| def __quit(self, event=None): |
| self.__root.quit() |
| |
| def withdraw(self, event=None): |
| self.__root.withdraw() |
| |
| def deiconify(self, event=None): |
| self.__root.deiconify() |
| |
| def __forceupdate(self, event=None): |
| self.__sb.update_views_current() |
| |
| def __toggletrack(self, event=None): |
| if self.__trackp.get(): |
| state = NORMAL |
| fg = self.__radios[0]['foreground'] |
| else: |
| state = DISABLED |
| fg = self.__radios[0]['disabledforeground'] |
| for r in self.__radios: |
| r.configure(state=state) |
| for l in self.__labels: |
| l.configure(foreground=fg) |
| |
| def __set_color(self, event=None): |
| which = self.__which.get() |
| text = self.__text |
| if which == 0: |
| color = text['foreground'] |
| elif which == 1: |
| color = text['background'] |
| elif which == 2: |
| color = text['selectforeground'] |
| elif which == 3: |
| color = text['selectbackground'] |
| elif which == 5: |
| color = text['insertbackground'] |
| try: |
| red, green, blue = ColorDB.rrggbb_to_triplet(color) |
| except ColorDB.BadColor: |
| # must have been a color name |
| red, green, blue = self.__sb.colordb().find_byname(color) |
| self.__sb.update_views(red, green, blue) |
| |
| def update_yourself(self, red, green, blue): |
| if self.__trackp.get(): |
| colorname = ColorDB.triplet_to_rrggbb((red, green, blue)) |
| which = self.__which.get() |
| text = self.__text |
| if which == 0: |
| text.configure(foreground=colorname) |
| elif which == 1: |
| text.configure(background=colorname) |
| elif which == 2: |
| text.configure(selectforeground=colorname) |
| elif which == 3: |
| text.configure(selectbackground=colorname) |
| elif which == 5: |
| text.configure(insertbackground=colorname) |
| |
| def save_options(self, optiondb): |
| optiondb['TRACKP'] = self.__trackp.get() |
| optiondb['WHICH'] = self.__which.get() |
| optiondb['TEXT'] = self.__text.get(0.0, 'end - 1c') |
| optiondb['TEXTSEL'] = self.__text.tag_ranges(SEL)[0:2] |
| optiondb['TEXTINS'] = self.__text.index(INSERT) |
| optiondb['TEXTFG'] = self.__text['foreground'] |
| optiondb['TEXTBG'] = self.__text['background'] |
| optiondb['TEXT_SFG'] = self.__text['selectforeground'] |
| optiondb['TEXT_SBG'] = self.__text['selectbackground'] |
| optiondb['TEXT_IBG'] = self.__text['insertbackground'] |
