Save canvas to image python

How can I convert canvas content to an image?

I have found a great way of doing this which is really helpful. For it, you need the PIL module. Here is the code:

from PIL import ImageGrab def getter(widget): x=root.winfo_rootx()+widget.winfo_x() y=root.winfo_rooty()+widget.winfo_y() x1=x+widget.winfo_width() y1=y+widget.winfo_height() ImageGrab.grab().crop((x,y,x1,y1)).save("file path here") 

What this does is you pass a widget name into the function. The command root.winfo_rootx() and the root.winfo_rooty() get the pixel position of the top left of the overall root window.

Then, the widget.winfo_x() and widget.winfo_y() are added to, basically just get the pixel coordinate of the top left hand pixel of the widget which you want to capture (at pixels (x,y) of your screen).

I then find the (x1,y1) which is the bottom left pixel of the widget. The ImageGrab.grab() makes a printscreen, and I then crop it to only get the bit containing the widget. Although not perfect, and won’t make the best possible image, this is a great tool for just getting a image of any widget and saving it.

If you have any questions, post a comment! Hope this helped!

You can either generate a postscript document (to feed into some other tool: ImageMagick, Ghostscript, etc):

from Tkinter import * root = Tk() cv = Canvas(root) cv.create_rectangle(10,10,50,50) cv.pack() root.mainloop() cv.update() cv.postscript(file="file_name.ps", colormode='color') root.mainloop() 

or draw the same image in parallel on PIL and on Tkinter’s canvas (see: Saving a Tkinter Canvas Drawing (Python)). For example (inspired by the same article):

from Tkinter import * import Image, ImageDraw width = 400 height = 300 center = height//2 white = (255, 255, 255) green = (0,128,0) root = Tk() # Tkinter create a canvas to draw on cv = Canvas(root, width=width, height=height, bg='white') cv.pack() # PIL create an empty image and draw object to draw on # memory only, not visible image1 = Image.new("RGB", (width, height), white) draw = ImageDraw.Draw(image1) # do the Tkinter canvas drawings (visible) cv.create_line([0, center, width, center], fill='green') # do the PIL image/draw (in memory) drawings draw.line([0, center, width, center], green) # PIL image can be saved as .png .jpg .gif or .bmp file (among others) filename = "my_drawing.jpg" image1.save(filename) root.mainloop() 

Maybe you can try to use widget_winfo_id to get the HWND of the canvas.

import win32gui from PIL import ImageGrab HWND = canvas.winfo_id() # get the handle of the canvas rect = win32gui.GetWindowRect(HWND) # get the coordinate of the canvas im = ImageGrab.grab(rect) # get image of the current location 

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Question: How To Save Tkinter Canvas As Image

Python Tkinter save button The save button is used for saving the file which is created by the user. By simply clicking on the save button we can save any file.

What does canvas do in Tkinter?

Python – Tkinter Canvas. The Canvas is a rectangular area intended for drawing pictures or other complex layouts. You can place graphics, text, widgets or frames on a Canvas.

How do you display an image in canvas in Python?

Example Code from tkinter import * from PIL import ImageTk,Image. root = Tk() canvas = Canvas(root, width = 300, height = 300) canvas.pack() img = ImageTk.PhotoImage(Image.open(“ball.png”)) canvas.create_image(20, 20, anchor=NW, image=img) root.mainloop().

Can we add image in Tkinter?

Image can be added with the help of PhotoImage() method. This is a Tkinter method which means you don’t have to import any other module in order to use it. Important: If both image and text are given on Button, the text will be dominated and only image will appear on the Button.

How do I save my tkinter GUI?

In the given code, we have created a “save” button to open the save dialog box using the filedialog module in tkinter. Click the “Save” button to save the File using the Dialog Box.

Is it possible to draw a circle directly in tkinter canvas?

Drawing a circle on a tkinter Canvas is usually done by the create_oval method. However, supplying the bounding box is often a confusing way to think about drawing a circle.

What is Canvas computer graphics?

From Wikipedia, the free encyclopedia. In computer science and visualization, a canvas is a container that holds various drawing elements (lines, shapes, text, frames containing others elements, etc.). It takes its name from the canvas used in visual arts.

Which of the following we can draw using Canvas in tkinter?

The Canvas widget supplies graphics facilities for Tkinter. Among these graphical objects are lines, circles, images, and even other widgets. With this widget it’s possible to draw graphs and plots, create graphics editors, and implement various kinds of custom widgets.

How do you make a smiley face on tkinter?

Using Canvas from tkinter create the SmileyFace class. This class must have the following functions: constructor (__init__): draws a smiley face on a canvas object. These functions return no values.

Why is my image not showing up in tkinter?

The gist of it is that the image is passed by reference. If the reference is to a local variable, the memory referenced gets reused and the reference becomes stale. The variable storing the image should be in the same scope (has to have the same lifetime) as the Tk gui object it appears on.

Can tkinter use JPG?

Images can be shown with tkinter. Images can be in a variety of formats including jpeg images. A bit counterintuitive, but you can use a label to show an image.

How do you put a picture on canvas?

Using images Get a reference to an HTMLImageElement object or to another canvas element as a source. It is also possible to use images by providing a URL. Draw the image on the canvas using the drawImage() function.

How do I display an image in PyCharm?

Specify how you want images to be shown in PyCharm. Optionally, specify an external editor for working with images. Use this area to specify the settings according to which images should be displayed in PyCharm. Select this checkbox to have a grid displayed when reviewing image files.

How do I download a module from tkinter?

How to install Tkinter in Python? Step 1 − Make sure Python and pip is preinstalled on your system. Type the following commands in command propmt to check is python and pip is installed on your system. To check Python. Step 2 − Install Tkinter. Tkinter can be installed using pip.

What does .pack do in tkinter?

tkinter Tkinter Geometry Managers pack() The pack() geometry manager organizes widgets in blocks before placing them in the parent widget. It uses the options fill , expand and side . Determines if the widget keeps the minimal space needed or takes up any extra space allocated to it.

Which function is used on the file to display a dialog for saving a file?

The FILESAVE function activates the standard File Save dialog. Text to display in the title bar of the dialog. Default directory for the file to be saved in the dialog.

How do I import Tkfiledialog into Python 3?

Dialogs included in tkinter let you ask for a filename or directory. tkinter file dialogs are easy to use, but not that easy to find out how to use. The main problem is that there is no simple example of how to do it. This article tries to fill the gap.

How do you draw a circle in tkinter?

“how to draw a circle in tkinter” Code Answer from tkinter import * root = Tk() myCanvas = Canvas(root) myCanvas. pack() def create_circle(x, y, r, canvasName): #center coordinates, radius. x0 = x – r. y0 = y – r. x1 = x + r.

What is Menubutton syntax?

The Menubutton widget can be defined as the drop-down menu that is shown to the user all the time. The Menubutton is used to implement various types of menus in the python application. Syntax: w = Menubutton ( master, options ) Parameters: master: This parameter is used to represents the parent window.

How do you draw a triangle in tkinter?

You can use polygon -function to draw a triangle. Just specify a list of corner-points of your triangle as argument. Check out the tkinter-documentation for more info.

Is canvas is a part of GUI?

A GUI canvas object is a container for GUI elements, and controls how they are rendered within the scene. The canvas can be configured to render to the screen or within the world. By rendering within the world, GUIs will appear properly to the user in stereo applications.

What is the canvas in an image editing program?

(2) In an image editing or paint program, the canvas is the window in which the picture is created or edited.

What is Tagalog of canvas?

Best translation for the English word canvas in Tagalog: lona [noun] canvas (cloth/material); tarp; coarse cloth more.

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Уроки Python / Экспорт Canvas в JPG, PNG (tkinter)

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