triocardio.blogg.se - Imageviewer install

#Imageviewer install how to#
#Imageviewer install install#
#Imageviewer install update#
#Imageviewer install code#

Try adding a menu bar or a toolbar to make opening files / folders simpler. With a little more polish, you could make this application more useful. You can write a pretty nice little image viewer with very few lines of code. PySimpleGUI makes creating an image application very simple. Now you can browse an entire folder easily with PySimpleGUI. When you run this code, your application will look like this:

#Imageviewer install update#

If they are, you check where in the list of paths you are and update it accordingly before loading the next image. Next, you check if the user is pressing "Next" or "Prev" and that images have been loaded. The images are loaded by using Python's glob module to search a folder for JPG and PNG files after a user selects a folder. Window = sg.Window("Image Viewer", elements, size=(475, 475)) Take what you learned in the previous section and rewrite it in a new file named image_browser.py: # image_browser.py If would be nice if you could make the viewer load up a directory of images and cycle through them instead. Your application makes you keep opening new images by browsing for a file one at a time. If you load an image, it will look like this:ĭoesn't that look nice? Give it a try by opening up a photo on your computer! Creating an Image Browser That is how the Image Viewer looks when an image is not loaded. When you run this code, you will end up with something like this: You can do that by using the image key that is contained in the window object. Then you pull the byte data from the in-memory file and pass that to the sg.Image object in the window.update() method at the end.įinally you show the image by calling update() on the Image widget and passing in the PhotoImage object. To display the image, you convert the file into an byte stream using io.BytesIO, which lets you save the image in memory. Now you have the path to the image! You can open that image using Pillow, then resize it using thumbnail(). When the file event is fired, you will grab the image that was chosen by doing a lookup using the key on the values dictionary.

This is where the meat of the program is. When an event occurs with that Element, it will be added to the window using that Element's key or name. This is the key name you defined earlier for the Input Element. You check for the Exit event, which occurs when you close the application. You read() the window object for events and values. This is how you create the event loop in PySimpleGUI.

#Imageviewer install code#

The last piece of code to cover are these lines: while True: Any Element you need to access later should also be given a name, which is the key argument. You disable the Input Element to make it read-only and prevent typing into it - each keypress would be an individual Event, and your loop is not prepared for that. To enable events for an Element, you set the enable_events argument to True - this will submit an Event whenever the Element changes.

FileBrowse - A button that opens a file browser dialog.

The reason they are lined up horizontally is because they are in a nested list. These three widgets are lined up horizontally in the form from left-to-right. Then you want to add three more widgets underneath it. In this case, you are telling it that you want to create an Image widget at the top of your Window. PySimpleGUI uses Python lists to lay out the user interface. These 11 lines of code define how your Elements are laid out. Window = sg.Window("Image Viewer", elements) Now you're ready to learn about the main() function: def main(): You import PySimpleGUI and the modules you need from PIL, and set file_types to the file selection choices for the Browse button in the form, which will default to JPEG. Let's break it down into a couple of smaller pieces: # image_viewer.py If event = "Exit" or event = sg.WIN_CLOSED: Window = sg.Window("Image Viewer", layout) Then add this code to the file: # image_viewer.py To see how, create a new file and name it image_viewer.py. PySimpleGUI lets you create a simple image viewer in less than 50 lines. Now that you have your dependencies installed, you can create a brand new application! Creating an Image Viewer

#Imageviewer install install#

You will also need Pillow because Tkinter only supports GIF and PGM/PPM image types.įortunately, you can install both of these packages easily with pip: python3 -m pip install PySimpleGUI Pillow

You need to install PySimpleGUI as it is not included with Python. You will be using the regular version of PySimpleGUI, which wraps Tkinter, rather than its wxPython or PyQt variants.

#Imageviewer install how to#

In this tutorial, you will learn how to use PySimpleGUI to create a simple Image Viewer. PySimpleGUI makes creating applications easy.