x01.editor: 语法高亮编辑器
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学习《Tkinter GUI Programming By Example》时，发现了语法高亮编辑器和聊天程序还不错。语法高亮编辑器如下，聊天程序可在下载中获取。
1. 效果图
2. 代码
import os, sys CurrDir = os.path.dirname(__file__) sys.path.append(CurrDir) import tkinter as tk import tkinter.ttk as ttk import tkinter.messagebox as msgbox import itertools from tkinter import filedialog from editor.core import TextArea, LineNumbers, FindWindow, Highlighter, R class MainWindow(tk.Tk): def __init__(self): super().__init__() self.title("x01.editor") self.text_area = TextArea(self, bg="white", fg="black", undo=True) self.scrollbar = ttk.Scrollbar(orient="vertical", command=self.scroll_text) self.text_area.configure(yscrollcommand=self.scrollbar.set) self.line_numbers = LineNumbers(self, self.text_area,width=1, bg="grey", fg="white") self.highlighter = Highlighter(self.text_area, os.path.join(CurrDir,‘languages/python.yaml‘)) self.scrollbar.pack(side=tk.RIGHT, fill=tk.Y) self.line_numbers.pack(side=tk.LEFT, fill=tk.Y) self.text_area.pack(side=tk.LEFT, fill=tk.BOTH, expand=1) self.bind_events() self.background = ‘lightgrey‘ self.foreground = ‘black‘ self.menu = tk.Menu(self, bg=self.background, fg=self.foreground) self.generate_menus([‘file‘, ‘help‘]) #‘edit‘,‘tools‘,‘help‘]) self.configure(menu=self.menu) self.open_file = ‘‘ self.yaml_config() R.win_center(self) def yaml_config(self): config = R.load_config(os.path.join(CurrDir, ‘config.yaml‘)) self.text_area.configure(font=(config[‘font_family‘], config[‘font_size‘])) self.line_numbers.configure(font=(config[‘font_family‘], config[‘font_size‘])) def bind_events(self): self.text_area.bind("<MouseWheel>", self.scroll_text) self.text_area.bind("<Button-4>", self.scroll_text) self.text_area.bind("<Button-5>", self.scroll_text) self.line_numbers.bind("<MouseWheel>", lambda e: "break") self.line_numbers.bind("<Button-4>", lambda e: "break") self.line_numbers.bind("<Button-5>", lambda e: "break") self.bind(‘<Control-f>‘, self.show_find_window) self.bind("<Control-n>", self.file_new) self.bind(‘<Control-o>‘, self.file_open) self.bind(‘<Control-s>‘, self.file_save) self.bind(‘<Alt-s>‘, self.file_saveas) self.bind(‘<Control-h>‘, self.help_about) def scroll_text(self, *args): if len(args) > 1: self.text_area.yview_moveto(args[1]) self.line_numbers.yview_moveto(args[1]) else: event = args[0] if event.delta: move = -1 * (event.delta / 120) else: if event.num == 5: move = 1 else: move = -1 self.text_area.yview_scroll(int(move), "units") self.line_numbers.yview_scroll(int(move) * 3, "units") def show_find_window(self, event=None): FindWindow(self.text_area) def generate_menus(self, items): win_methods = [method_name for method_name in dir(self) if callable(getattr(self, method_name))] tk_methods = [method_name for method_name in dir(tk.Tk) if callable(getattr(tk.Tk, method_name))] methods = [m for m in set(win_methods) - set(tk_methods)] methods = sorted(methods) for item in items: sub_menu = tk.Menu(self.menu, tearoff=0, bg=self.background, fg=self.foreground) match_methods = [] for m in methods: if m.startswith(item): match_methods.append(m) for m in match_methods: actual_method = getattr(self, m) shortcut = actual_method.__doc__.strip() name = ‘ ‘.join(m.split(‘_‘)[1:]) sub_menu.add_command(label=name.title(), command=actual_method, accelerator=shortcut) self.menu.add_cascade(label=item.title(), menu=sub_menu) def file_new(self, event=None): ‘‘‘ Ctrl+N ‘‘‘ self.text_area.delete(1.0, tk.END) self.open_file = None self.line_numbers.force_update() def file_open(self, event=None): ‘‘‘ Ctrl+O ‘‘‘ types = ((‘python files‘, ‘*.py‘), (‘All files‘, ‘*.*‘)) filename = filedialog.askopenfilename(title=‘x01.editor‘, filetypes=types) if filename: self.open_file = filename self.text_area.display_file_contents(filename) self.highlighter.highlight() self.line_numbers.force_update() def file_save(self, event=None): ‘‘‘ Ctrl+S ‘‘‘ f = self.open_file if self.open_file else None if f is None: types = ((‘python files‘, ‘*.py‘), (‘All files‘, ‘*.*‘)) f = filedialog.asksaveasfilename(title=‘x01.editor‘, filetypes=types) if f: contents = self.text_area.get(1.0, tk.END) with open(f, ‘w‘) as file: file.write(contents) def file_saveas(self, event=None): ‘‘‘ Alt+S ‘‘‘ types = ((‘python files‘, ‘*.py‘), (‘All files‘, ‘*.*‘)) f = filedialog.asksaveasfilename(title=‘x01.editor‘, filetypes=types) if f: contents = self.text_area.get(1.0,tk.END) with open(f, ‘w‘) as file: file.write(contents) def help_about(self, event=None): ‘‘‘ Ctrl+H ‘‘‘ msgbox.showinfo("About", "x01.editor 语法高亮编辑器") pass if __name__ == ‘__main__‘: mw = MainWindow() mw.mainloop()
import tkinter as tk import tkinter.ttk as ttk import yaml import os, sys class TextArea(tk.Text): def __init__(self, master, **kwargs): super().__init__(**kwargs) self.master = master self.config(wrap=tk.WORD) # CHAR NONE self.tag_configure(‘find_match‘, background="yellow") self.find_match_index = None self.find_search_starting_index = 1.0 self.bind_events() def display_file_contents(self, path): with open(path, ‘r‘) as f: self.delete(1.0, tk.END) self.insert(1.0, f.read()) def bind_events(self): self.bind(‘<Control-a>‘, self.select_all) self.bind(‘<Control-c>‘, self.copy) self.bind(‘<Control-v>‘, self.paste) self.bind(‘<Control-x>‘, self.cut) self.bind(‘<Control-y>‘, self.redo) self.bind(‘<Control-z>‘, self.undo) def cut(self, event=None): self.event_generate("<<Cut>>") def copy(self, event=None): self.event_generate("<<Copy>>") def paste(self, event=None): self.event_generate("<<Paste>>") def undo(self, event=None): self.event_generate("<<Undo>>") return "break" def redo(self, event=None): self.event_generate("<<Redo>>") return "break" def select_all(self, event=None): self.tag_add("sel", 1.0, tk.END) return "break" def find(self, text_to_find): length = tk.IntVar() idx = self.search(text_to_find, self.find_search_starting_index, stopindex=tk.END, count=length) if idx: self.tag_remove(‘find_match‘, 1.0, tk.END) end = f‘{idx}+{length.get()}c‘ self.tag_add(‘find_match‘, idx, end) self.see(idx) self.find_search_starting_index = end self.find_match_index = idx else: if self.find_match_index != 1.0: if msg.askyesno("No more results", "No further matches. Repeat from the beginning?"): self.find_search_starting_index = 1.0 self.find_match_index = None return self.find(text_to_find) else: msg.showinfo("No Matches", "No matching text found") def replace_text(self, target, replacement): if self.find_match_index: end = f"{self.find_match_index}+{len(target)}c" self.replace(self.find_match_index, end, replacement) self.find_search_starting_index = f"{self.find_match_index} linestart" self.find_match_index = None def cancel_find(self): self.find_search_starting_index = 1.0 self.find_match_index = None self.tag_remove(‘find_match‘, 1.0, tk.END) class LineNumbers(tk.Text): def __init__(self, master, text_widget, **kwargs): super().__init__(master, **kwargs) self.text_widget = text_widget self.text_widget.bind(‘<KeyPress>‘, self.on_key_press) self.insert(1.0, ‘1‘) self.configure(state=‘disabled‘) def on_key_press(self, event=None): final_index = str(self.text_widget.index(tk.END)) num_of_lines = final_index.split(‘.‘)[0] line_numbers_string = " ".join(str(no + 1) for no in range(int(num_of_lines))) width = len(str(num_of_lines)) self.configure(state=‘normal‘, width=width) self.delete(1.0, tk.END) self.insert(1.0, line_numbers_string) self.configure(state=‘disabled‘) def force_update(self): self.on_key_press() class R: CurrentDir = os.path.dirname(__file__) @classmethod def load_config(cls, path): with open(path, ‘r‘) as f: try: config = yaml.load(f) except yaml.YAMLError as e: print(e) return return config @classmethod def win_center(cls, win, w=800,h=600): x = (win.winfo_screenwidth() - w) // 2 y = (win.winfo_screenheight() - h) // 2 win.geometry(‘{}x{}+{}+{}‘.format(w,h,x,y)) class FindWindow(tk.Toplevel): def __init__(self, master, **kwargs): super().__init__(**kwargs) self.master = master self.geometry(‘350x100‘) self.title(‘Find and Replace‘) self.transient(self.master) self.text_to_find = tk.StringVar() self.text_to_replace_with = tk.StringVar() top_frame = tk.Frame(self) middle_frame = tk.Frame(self) bottom_frame = tk.Frame(self) find_entry_label = tk.Label(top_frame, text="Find: ") self.find_entry = ttk.Entry(top_frame, textvar=self.text_to_find) replace_entry_label = tk.Label(middle_frame, text="Replace: ") self.replace_entry = ttk.Entry(middle_frame, textvar=self.text_to_replace_with) self.find_button = ttk.Button(bottom_frame, text="Find", command=self.on_find) self.replace_button = ttk.Button(bottom_frame, text="Replace", command=self.on_replace) self.cancel_button = ttk.Button(bottom_frame, text="Cancel", command=self.on_cancel) find_entry_label.pack(side=tk.LEFT, padx=(20, 0)) self.find_entry.pack(side=tk.LEFT, fill=tk.X, expand=1) replace_entry_label.pack(side=tk.LEFT) self.replace_entry.pack(side=tk.LEFT, fill=tk.X, expand=1) self.find_button.pack(side=tk.LEFT, padx=(85, 0)) self.replace_button.pack(side=tk.LEFT, padx=(20, 20)) self.cancel_button.pack(side=tk.RIGHT, padx=(0, 30)) top_frame.pack(side=tk.TOP, expand=1, fill=tk.X, padx=30) middle_frame.pack(side=tk.TOP, expand=1, fill=tk.X, padx=30) bottom_frame.pack(side=tk.TOP, expand=1, fill=tk.X) self.find_entry.focus_force() self.protocol("WM_DELETE_WINDOW", self.on_cancel) def on_find(self): self.master.find(self.text_to_find.get()) def on_replace(self): self.master.replace_text(self.text_to_find.get(), self.text_to_replace_with.get()) def on_cancel(self): self.master.cancel_find() self.destroy() class Highlighter: def __init__(self, text_widget, syntax_file): self.text_widget = text_widget self.syntax_file = syntax_file self.categories = None self.numbers_color = "blue" self.disallowed_previous_chars = ["_", "-", "."] self.parse_syntax_file() self.text_widget.bind(‘<KeyRelease>‘, self.on_key_release) def on_key_release(self, event=None): self.highlight() def parse_syntax_file(self): with open(self.syntax_file, ‘r‘) as stream: try: config = yaml.load(stream) except yaml.YAMLError as error: print(error) return self.categories = config[‘categories‘] self.numbers_color = config[‘numbers‘][‘color‘] self.strings_color = config[‘strings‘][‘color‘] self.configure_tags() def configure_tags(self): for category in self.categories.keys(): color = self.categories[category][‘color‘] self.text_widget.tag_configure(category, foreground=color) self.text_widget.tag_configure("number", foreground=self.numbers_color) self.text_widget.tag_configure("string", foreground=self.strings_color) def highlight(self, event=None): length = tk.IntVar() for category in self.categories: matches = self.categories[category][‘matches‘] for keyword in matches: start = 1.0 keyword = keyword + "[^A-Za-z_-]" idx = self.text_widget.search(keyword, start, stopindex=tk.END, count=length, regexp=1) while idx: char_match_found = int(str(idx).split(‘.‘)[1]) line_match_found = int(str(idx).split(‘.‘)[0]) if char_match_found > 0: previous_char_index = str(line_match_found) + ‘.‘ + str(char_match_found - 1) previous_char = self.text_widget.get(previous_char_index, previous_char_index + "+1c") if previous_char.isalnum() or previous_char in self.disallowed_previous_chars: end = f"{idx}+{length.get() - 1}c" start = end idx = self.text_widget.search(keyword, start, stopindex=tk.END, regexp=1) else: end = f"{idx}+{length.get() - 1}c" self.text_widget.tag_add(category, idx, end) start = end idx = self.text_widget.search(keyword, start, stopindex=tk.END, regexp=1) else: end = f"{idx}+{length.get() - 1}c" self.text_widget.tag_add(category, idx, end) start = end idx = self.text_widget.search(keyword, start, stopindex=tk.END, regexp=1) self.highlight_regex(r"(d)+[.]?(d)*", "number") self.highlight_regex(r"[‘][^‘]*[‘]", "string") self.highlight_regex(r"["][^"]*["]", "string") def highlight_regex(self, regex, tag): length = tk.IntVar() start = 1.0 idx = self.text_widget.search(regex, start, stopindex=tk.END, regexp=1, count=length) while idx: end = f"{idx}+{length.get()}c" self.text_widget.tag_add(tag, idx, end) start = end idx = self.text_widget.search(regex, start, stopindex=tk.END, regexp=1, count=length) if __name__ == "__main__": w = tk.Tk() h = Highlighter(tk.Text(w), os.path.join(CurrDir,‘languages/python.yaml‘)) w.mainloop()
3. 下载