Text component of python3.6 tkinter

As a standard interface for Python GUI programming, tkinter has a very rich window control. This article introduces its Text component in detail.

Text component is a component that displays and processes multi-line text and has a very flexible application method.

The properties are divided into two categories, including STANDARD OPTIONS and WIDGET-SPECIFIC OPTIONS
. The basic description table is shown

## highlightbackgroundDefine the highlight background color when the text control does not receive input focus. It's the bright edge of the text control. highlightcolorThe highlightbackground property is similar. It's just the border color of the text control when it gets input focus. highlightthicknessThe border width of the text control when it gets input focus. Generally 1-2 pixels.

STANDARD attribute value	Description
background	Background color
borderwidth	The border width of the text control. The default is 1-2 pixels.
cursor	The cursor of the text control. The default is a character insertion cursor (usually an "I-beam" type cursor)
exportselection	Whether to allow copying content to the clipboard
font	Font settings and size
foreground	Foreground color

insertbackgroundSet the color of the text control insertion cursor insertborderwidthInsert cursor border width. If it is a non-zero value, the cursor will use a RAISED border. These two properties control the insert cursor flashing effect. It is the time when the insertion cursor appears and disappears. The unit is milliseconds. insertwidthSets the width of the insertion cursor. padxPadding in the x-axis directionpadyPadding in the y-axis direction MarginreliefSpecifies the 3D border effect of the text control. The default is flat. The parameters that can be set are: flat, groove, raised, ridge, solid, sunkenselectbackgroundSet the background color of the selected textselectborderwidthSet the border width of the selected area.

insertofftime insertontime

setgrid	boolean type. When True, the window can be maximized and the entire Text control can be displayed.
takefocus	Defines whether the Tab key can be used to move the input focus to the control.
xscrollcommand yscrollcommand	Associate the scroll bar with the text control and handle the scroll bar action. The scroll bars correspond to horizontal or vertical scroll bars respectively.
WIDGET-SPECIFICWindow Properties	Description
autoseparators	The space between words. The default value is 1
height	The height of the text control. The default is 24 lines.
maxundo	Maximum number of Undo. The default is 0.
spacing1	Spacing before paragraph.
spacing2	Line spacing.
spacing3	Spacing after paragraph.

state	Define the state of the text control. There are two states: NORMAL and DISABLED
tabs	Define the movement distance when pressing the Tab key.
undo	Enable undo/redo function.
width	Define the width of the text control, the unit is the number of characters.
wrap	Define how to wrap the content of the text control

Methods of the Text basic class:

##Method nameDescriptionbbox()Return a tuple describing the position and size (x, y, width, height) ##compare(index1, op, index2)count(self, index1, index2)debug(self, boolean=None)According to BOOLEAN, check the consistency of the B-Tree within the textdelete(self, index1, index2=None)dlineinfo(self, index)##edit(self, * args)get(self, index1, index2=None)image_create(self, index, cnf={}, **kw)

Return a logical comparison result
Calculate the number of related things between two indexes quantity.
Delete the characters between INDEX1 and INDEX2 (not included)
Return tuple (x, y, width, height, baseline)
This method controls the undo mechanism and the modified flag.
Returns the value between index INDEX1 to INDEX2 (exclusive)
Create an embedded image at the index INDEX position.

##index(self, index)Returns the index value of INDEX in the form of line.char. Insert characters at index index positionReturn all marks valuesReplace the value between index index1 and index2 with charssearch(self, pattern, index)From Start searching for the content of the regular expression at the index position##tag_add(self, tagName, index1, *args)Add tagtag_bind(self, tagName, sequence, func, add=None)Bind Defining events and unbindingDelete tagRemove specific tags between indexesCreate a sub-window at the index position

Application example of Text component.

One is a simple basic application

from tkinter import *

class init_window():
def __init__(self):
self.tk = Tk ()
self.window_attritions()
def window_attritions(self):
self.tk.title('Text component learning')
self.init_data_text = Text(self.tk)
self.init_data_text.pack()
def show():
print('hello')
if __name__ == "__main__":
win = init_window()
win.tk. mainloop()

The second is to insert components

button = Button(win.init_data_text,text='Insert button in text',command=show)
win.init_data_text.window_create(INSERT,window=button)

The third is to insert pictures

win.init_data_text.image_create(END, image=PhotoImage(file='1.gif'))

It can be seen from the above introduction that the index value of the Text component has many applications. The following introduces the types of index values

	insert(self, index, chars, *args)
	mark_names(self)
	##replace(self, index1, index2, chars, *args)
	tag_unbind(self, tagName, sequence, funcid=None)
tag_delete(self, *tagNames)
tag_remove( self, tagName, index1, index2=None)
window_create(self, index, cnf={}, **kw)

##window coordinate("@x,y")Window positioning

Index Type	Description
line.column	Row/Column
line.end	End of a line
INSERT	Cursor position
END	End of text
user-defined marks	Custom marks
user-defined tags("tag.first", "tag.last")

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