【记录】python3 使用tkinter制作tkinterUI编辑器 《八》

osc_hxm151is 2020-11-15 08:31:29
Python tkinter entry combobox


使用tkinter制作tkinterUI编辑器


前言

这篇文章继续记录编辑属性的控件,我希望编辑颜色的时候可以直接弹出系统自带的颜色选择界面,编辑image属性时可以弹出选择文件的界面,所以先添加一个编辑颜色以及image的控件,之后添加一个根据属性类型进行编辑属性的控件。

一、编辑颜色以及image的控件

先上代码,EditorPropertyList.py

#!/usr/bin/python
# -*- coding: utf-8 -*-
import sys
from enum import IntEnum
import tkinter.font as tkFont
from tkinter import Entry, END, Label, Button
from tkinter.ttk import Combobox
from tkinter import colorchooser
from tkinter.filedialog import askopenfilename
from ScrollRows import ScrollRows
from ScrollCols import ScrollCols
from WidgetRedirector import WidgetRedirector
from componentProperty import update_all_property, get_default_component_info, get_all_prop_name
def create_default_component(master, component_type, component_name, prop=None, use_name=True):
"""
创建默认控件
:param master: 父控件
:param component_type: 控件类型
:param component_name: 控件名字
:param prop: 需要更新的属性
:param use_name: 是否使用控件名字
:return: 控件
"""
class_name = getattr(sys.modules[__name__], component_type)
if use_name:
component = class_name(master, name=component_name)
else:
component = class_name(master)
component_info = get_default_component_info(component_type, prop)
update_all_property(component, component_info, component_type)
return component, component_info
class EntryBtnFunctionID(IntEnum):
FUNCTION_COLOR = 1
FUNCTION_SELECT = 2
class EntryWithBtn(Entry):
def __init__(self, master=None, cnf={
}, **kw):
Entry.__init__(self, master, cnf, **kw)
self.function_id = EntryBtnFunctionID.FUNCTION_COLOR
self.function_dict = {

EntryBtnFunctionID.FUNCTION_COLOR: self.btn_color_click,
EntryBtnFunctionID.FUNCTION_SELECT: self.btn_select_click,
}
def set_function_id(self, function_id):
if self.function_id == function_id:
return
self.function_id = function_id
def get_function_id(self):
return self.function_id
def on_update(self):
self.create_btn()
def create_btn(self):
prop = {

"width": 0, "height": 1,
"x": self.winfo_reqwidth() - 15,
"text": "...", "background": "grey",
}
btn, info = create_default_component(self, "Button", "function_btn", prop, True)
btn.bind("<Button-1>", self.on_btn_click)
def on_btn_click(self, event):
function = self.function_dict[self.get_function_id()]
function()
def btn_color_click(self):
color = colorchooser.askcolor()
if color[0] is None:
return
self.delete(0, END)
self.insert(0, color[1])
def btn_select_click(self):
file_path = askopenfilename(title=u"选择文件", filetypes=[("all files", "*")])
if not file_path:
return
self.delete(0, END)
self.insert(0, file_path)

说明:

  1. 这个控件就是Entry里加了一个按钮,点击的时候根据类型去分别进行处理,如下图:
    在这里插入图片描述

  2. WidgetRedirector是从python自带的idle编辑器里面拷贝的,主要是用来处理entry的insert和delete事件的,之后会用到,代码如下,WidgetRedirector.py

    from tkinter import TclError
    class WidgetRedirector:
    """Support for redirecting arbitrary widget subcommands.
    Some Tk operations don't normally pass through tkinter. For example, if a
    character is inserted into a Text widget by pressing a key, a default Tk
    binding to the widget's 'insert' operation is activated, and the Tk library
    processes the insert without calling back into tkinter.
    Although a binding to <Key> could be made via tkinter, what we really want
    to do is to hook the Tk 'insert' operation itself. For one thing, we want
    a text.insert call in idle code to have the same effect as a key press.
    When a widget is instantiated, a Tcl command is created whose name is the
    same as the pathname widget._w. This command is used to invoke the various
    widget operations, e.g. insert (for a Text widget). We are going to hook
    this command and provide a facility ('register') to intercept the widget
    operation. We will also intercept method calls on the tkinter class
    instance that represents the tk widget.
    In IDLE, WidgetRedirector is used in Percolator to intercept Text
    commands. The function being registered provides access to the top
    of a Percolator chain. At the bottom of the chain is a call to the
    original Tk widget operation.
    """
    def __init__(self, widget):
    '''Initialize attributes and setup redirection.
    _operations: dict mapping operation name to new function.
    widget: the widget whose tcl command is to be intercepted.
    tk: widget.tk, a convenience attribute, probably not needed.
    orig: new name of the original tcl command.
    Since renaming to orig fails with TclError when orig already
    exists, only one WidgetDirector can exist for a given widget.
    '''
    self._operations = {
    }
    self.widget = widget # widget instance
    self.tk = tk = widget.tk # widget's root
    w = widget._w # widget's (full) Tk pathname
    self.orig = w + "_orig"
    # Rename the Tcl command within Tcl:
    tk.call("rename", w, self.orig)
    # Create a new Tcl command whose name is the widget's pathname, and
    # whose action is to dispatch on the operation passed to the widget:
    tk.createcommand(w, self.dispatch)
    def __repr__(self):
    return "WidgetRedirector(%s<%s>)" % (self.widget.__class__.__name__,
    self.widget._w)
    def close(self):
    "Unregister operations and revert redirection created by .__init__."
    for operation in list(self._operations):
    self.unregister(operation)
    widget = self.widget
    tk = widget.tk
    w = widget._w
    # Restore the original widget Tcl command.
    tk.deletecommand(w)
    tk.call("rename", self.orig, w)
    del self.widget, self.tk # Should not be needed
    # if instance is deleted after close, as in Percolator.
    def register(self, operation, function):
    '''Return OriginalCommand(operation) after registering function.
    Registration adds an operation: function pair to ._operations.
    It also adds an widget function attribute that masks the tkinter
    class instance method. Method masking operates independently
    from command dispatch.
    If a second function is registered for the same operation, the
    first function is replaced in both places.
    '''
    self._operations[operation] = function
    setattr(self.widget, operation, function)
    return OriginalCommand(self, operation)
    def unregister(self, operation):
    '''Return the function for the operation, or None.
    Deleting the instance attribute unmasks the class attribute.
    '''
    if operation in self._operations:
    function = self._operations[operation]
    del self._operations[operation]
    try:
    delattr(self.widget, operation)
    except AttributeError:
    pass
    return function
    else:
    return None
    def dispatch(self, operation, *args):
    '''Callback from Tcl which runs when the widget is referenced.
    If an operation has been registered in self._operations, apply the
    associated function to the args passed into Tcl. Otherwise, pass the
    operation through to Tk via the original Tcl function.
    Note that if a registered function is called, the operation is not
    passed through to Tk. Apply the function returned by self.register()
    to *args to accomplish that. For an example, see ColorDelegator.py.
    '''
    m = self._operations.get(operation)
    try:
    if m:
    return m(*args)
    else:
    return self.tk.call((self.orig, operation) + args)
    except TclError:
    return ""
    class OriginalCommand:
    '''Callable for original tk command that has been redirected.
    Returned by .register; can be used in the function registered.
    redir = WidgetRedirector(text)
    def my_insert(*args):
    print("insert", args)
    original_insert(*args)
    original_insert = redir.register("insert", my_insert)
    '''
    def __init__(self, redir, operation):
    '''Create .tk_call and .orig_and_operation for .__call__ method.
    .redir and .operation store the input args for __repr__.
    .tk and .orig copy attributes of .redir (probably not needed).
    '''
    self.redir = redir
    self.operation = operation
    self.tk = redir.tk # redundant with self.redir
    self.orig = redir.orig # redundant with self.redir
    # These two could be deleted after checking recipient code.
    self.tk_call = redir.tk.call
    self.orig_and_operation = (redir.orig, operation)
    def __repr__(self):
    return "OriginalCommand(%r, %r)" % (self.redir, self.operation)
    def __call__(self, *args):
    return self.tk_call(self.orig_and_operation + args)
    def _widget_redirector(parent): # htest #
    from tkinter import Tk, Text
    import re
    root = Tk()
    root.title("Test WidgetRedirector")
    width, height, x, y = list(map(int, re.split('[x+]', parent.geometry())))
    root.geometry("+%d+%d"%(x, y + 150))
    text = Text(root)
    text.pack()
    text.focus_set()
    redir = WidgetRedirector(text)
    def my_insert(*args):
    print("insert", args)
    original_insert(*args)
    original_insert = redir.register("insert", my_insert)
    root.mainloop()
    if __name__ == "__main__":
    import unittest
    unittest.main('idlelib.idle_test.test_widgetredir',
    verbosity=2, exit=False)
    from idlelib.idle_test.htest import run
    run(_widget_redirector)
    

二、根据属性类型进行编辑属性的控件

先上代码,还是EditorPropertyList.py

class EditPropType(IntEnum):
TYPE_ENTRY = 1
TYPE_COMBO_BOX = 2
TYPE_COLOR = 3
TYPE_SELECT = 4
CURSOR_LIST = (
"arrow;based_arrow_down;based_arrow_up;boat;bogosity;bottom_left_corner;bottom_right_corner;"
"bottom_side;bottom_tee;box_spiral;center_ptr;circle;clock;coffee_mug;cross;cross_reverse;crosshair;"
"diamond_cross;dot;dotbox;double_arrow;draft_large;draft_small;draped_box;exchange;fleur;gobbler;gumby;"
"hand1;hand2;heart;icon;iron_cross;left_ptr;left_side;left_tee;leftbutton;ll_angle;lr_angle;man;"
"middlebutton;mouse;none;pencil;pirate;plus;question_arrow;right_ptr;right_side;right_tee;rightbutton;"
"rtl_logo;sailboat;sb_down_arrow;sb_h_double_arrow;sb_left_arrow;sb_right_arrow;sb_up_arrow;"
"sb_v_double_arrow;shuttle;sizing;spider;spraycan;star;target;tcross;top_left_arrow;top_left_corner;"
"top_right_corner;top_side;top_tee;trek;ul_angle;umbrella;ur_angle;watch;xterm;X_cursor"
)
PROP_TO_VALUES = {

"anchor": ("n;s;w;e;nw;sw;ne;se;center"),
"justify": ("left;right;center"),
"font_anchor": ("n;s;w;e;nw;sw;ne;se;center"),
"labelanchor": ("n;s;w;e;nw;sw;ne;se"),
"relief": ("flat;groove;raised;ridge;solid;sunken"),
"activerelief": ("flat;groove;raised;ridge;solid;sunken"),
"sliderrelief": ("flat;groove;raised;ridge;solid;sunken"),
"buttondownrelief": ("flat;groove;raised;ridge;solid;sunken"),
"buttonuprelief": ("flat;groove;raised;ridge;solid;sunken"),
"mode": ("determinate;indeterminate"),
"state": ("active;disabled;normal;readonly"),
"cursor": CURSOR_LIST,
"buttoncursor": CURSOR_LIST,
"compound": ("bottom;center;left;none;right;top"),
"exportselection": ("0;1"),
"selectmode": ("browse;multiple;single;extended;none"),
"is_show_scroll": ("0;1"),
"is_show_scroll_x": ("0;1"),
"is_show_scroll_y": ("0;1"),
"is_always_show_scroll": ("0;1"),
"orient": ("horizontal;vertical"),
"wrap": ("none;char;word"),
"show": ("headings;tree;tree headings"),
}
PROP_COLOR_LIST = (
"background", "activebackground", "activeforeground", "disabledforeground", "readonlybackground",
"foreground", "highlightbackground", "highlightcolor", "insertbackground", "disabledbackground",
"selectbackground", "selectforeground", "troughcolor", "selectcolor", "buttonbackground"
)
PROP_SELECT_LIST = (
"bitmap", "image"
)
def get_prop_type_by_name(name):
"""
根据属性名字获取编辑框类型
:param name: 属性名字
:return: 编辑框类型
"""
if name in PROP_TO_VALUES:
return EditPropType.TYPE_COMBO_BOX
if name in PROP_COLOR_LIST:
return EditPropType.TYPE_COLOR
if name in PROP_SELECT_LIST:
return EditPropType.TYPE_SELECT
return EditPropType.TYPE_ENTRY
class EditorProperty(ScrollCols):
TYPE_TO_CLASS = {

EditPropType.TYPE_ENTRY: Entry,
EditPropType.TYPE_COMBO_BOX: Combobox,
EditPropType.TYPE_COLOR: EntryWithBtn,
EditPropType.TYPE_SELECT: EntryWithBtn,
}
def __init__(self, master=None, cnf={
}, **kw):
ScrollCols.__init__(self, master, cnf, **kw)
self.col_distance = 2
self.is_updating_property = False # 是否正在更新属性
def create_label(self, label_text, is_do_layout=False):
"""
创建属性名字标签
:param label_text: 标签内容
:param is_do_layout: 是否重新布局
:return: None
"""
label_prop = {

"width": 23, "borderwidth": 2,
"x": 0, "y": 1,
"text": label_text,
"relief": "sunken",
"highlightthickness": 1,
}
label, info = create_default_component(self.slide_window, "Label", "label_text", label_prop)
self.add_col_base(label, is_do_layout)
def create_edit(self, edit_type, edit_value, default_values="None", is_do_layout=False):
"""
创建属性编辑框
:param edit_type: 编辑框类型
:param edit_value: 默认值
:param default_values: comboBox下拉列表默认值
:param is_do_layout: 是否重新布局
:return: None
"""
edit_class = self.TYPE_TO_CLASS[edit_type]
edit_prop = {

"borderwidth": 2, "width": 29,
"x": 0, "y": 1,
}
if edit_type == EditPropType.TYPE_COMBO_BOX:
values = default_values.split(";")
value_list = []
for value in values:
value_list.append(value)
edit_prop.update({
"values": value_list, "width": 27, "position_y": 1, "borderwidth": 1,})
elif edit_type == EditPropType.TYPE_SELECT:
edit_prop.update({
"function_id": EntryBtnFunctionID.FUNCTION_SELECT})
elif edit_type == EditPropType.TYPE_COLOR:
edit_prop.update({
"function_id": EntryBtnFunctionID.FUNCTION_COLOR})
edit, info = create_default_component(self.slide_window, edit_class.__name__, "edit", edit_prop)
edit.bind("<Key>", self.key_click)
if edit_type == EditPropType.TYPE_COMBO_BOX:
edit.bind("<<ComboboxSelected>>", self.on_prop_change)
self.add_col_base(edit, is_do_layout)
if edit_value is not None:
edit.insert(0, edit_value)
redir = WidgetRedirector(edit)
def my_insert(*args):
original_insert(*args)
self.on_prop_change(None)
def my_delete(*args):
original_delete(*args)
self.on_prop_change(None)
original_insert = redir.register("insert", my_insert)
original_delete = redir.register("delete", my_delete)
def create_one_property(self, label_text, edit_value, edit_type, default_value):
"""
创建编辑属性所需的控件
:param label_text: 属性名字
:param edit_value: 属性值
:param edit_type: 编辑框类型
:param default_value: comboBox下拉列表默认值
:return: None
"""
self.create_label(label_text)
self.create_edit(edit_type, edit_value, default_value)
self.do_layout_col()
def update_prop_value(self, prop_value):
"""
更新属性值
:param prop_value: 属性值
:return: None
"""
edit = self.slide_window.children.get("edit", None)
if edit is None:
return
self.is_updating_property = True
edit.delete(0, END)
edit.insert(0, prop_value)
self.is_updating_property = False
def clear_edit_value(self):
"""
清除编辑框内容
:return: None
"""
edit = self.slide_window.children.get("edit", None)
if edit is None:
return
self.is_updating_property = True
edit.delete(0, END)
self.is_updating_property = False
def on_prop_change(self, event):
"""
属性更新之后回调
:param event:
:return:
"""
if self.is_updating_property:
return
label = self.slide_window.children.get("label_text", None)
if label is None:
return
edit = self.slide_window.children.get("edit", None)
if edit is None:
return
value = edit.get()
if not value:
return
self.master.master.edit_component.update_property({
label['text']: value,}, "prop_list")
def key_click(self, event):
self.master.master.get_selected_component().component.focus_force()
if event.keysym in ("Up", "Down"):
return "break"
 @staticmethod
def create_default_property(master, component_name, prop=None):
property_dict = {

"x": 0, "y": 0,
"width": 500, "height": 500,
"borderwidth": 0, "pos_x_default": 3,
}
if prop is not None:
property_dict.update(prop)
property, info = create_default_component(master, "EditorProperty", component_name, property_dict)
return property

说明:

  1. 我将编辑框分为了4个类型,有下拉列表的(例如font,cursor等等)用ComboBox,选择颜色和文件的用EntryWithBtn,其余的都用Entry
  2. 编辑框插入和删除之后需要更新正在编辑的控件属性,使用WidgetRedirector处理
  3. self.master.master.edit_component.update_property({label[‘text’]: value,}, “prop_list”)这句是后面真正编辑属性时用到的,这里不用管
  4. update_prop_value这个函数是通过鼠标将控件移动位置后修改编辑框的文字时调用的,这里为了避免循环调用on_prop_change函数加了一个限制is_updating_property
  5. key_click这里我还没想好,目前不用管
  6. 需要再更新一下componentProperty这个文件

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本文为[osc_hxm151is]所创,转载请带上原文链接,感谢
https://my.oschina.net/u/4365856/blog/4717586

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