Login

Tag "thumbnail"

29 snippets

Snippet List

[UPDATE]Filter to resize a ImageField on demand

A filter to resize a ImageField on demand, a use case could be: <img src="{{ object.image.url }}" alt="original image"> <img src="{{ object.image|thumbnail }}" alt="image resized to default 104x104 format"> <img src="{{ object.image|thumbnail:200x300 }}" alt="image resized to 200x300"> Original http://www.djangosnippets.org/snippets/192/

  • template
  • image
  • thumbnail
Read More

ImageField for admin with thumbnail

AdminImageWidget is a ImageField Widget for admin that shows a thumbnail. Usage example on a form: class IconForm(forms.ModelForm): icon = forms.ImageField(label='icon', widget=AdminImageWidget)

  • image
  • admin
  • thumbnail
  • imagefield
  • widget
  • imagewidget
Read More

Yet Another Image Resizer

There's a whole range of examples online for resizing images in Django some of which are incredibly comprehensive with a wide variety of options. Here's my take on the task that serves as a simple drop in for when you don't want to include a separate app. - Only generates the resized image when first requested. - Handles maintaining proportions when specifying only a width or a height. - Makes use of PIL.ImageOps.fit for cropping without reinventing the wheel.

  • template
  • tag
  • image
  • pil
  • thumbnail
  • resize
Read More

Dynamic thumbnail generator

This snippet creates thumbnails on-demand from a ImageField with any size using dynamics methods, like ``get_photo_80x80_url`` or ``get_photo_640x480_filename``, etc. It assumes you have an `ImageField` in your Model called `photo` and have this in your models.py: import re from os import path from PIL import Image GET_THUMB_PATTERN = re.compile(r'^get_photo_(\d+)x(\d+)_(url|filename)$') `models.py` example: import re from os import path from PIL import Image from django.db import models GET_THUMB_PATTERN = re.compile(r'^get_photo_(\d+)x(\d+)_(url|filename)$') class Photo(models.Model): photo = models.ImageField(upload_to='photos/%Y/%m/%d') <snippet here> Example usage: >>> photo = Photo(photo="/tmp/test.jpg") >>> photo.save() >>> photo.get_photo_80x80_url() u"http://media.example.net/photos/2008/02/26/test_80x80.jpg" >>> photo.get_photo_80x80_filename() u"/srv/media/photos/2008/02/26/test_80x80.jpg" >>> photo.get_photo_64x64_url() u"http://media.example.net/photos/2008/02/26/test_64x64.jpg" >>> photo.get_photo_64x64_filename() u"/srv/media/photos/2008/02/26/test_64x64.jpg"

  • image
  • thumbnail
  • model
  • imagefield
Read More

Auto Generate/Save Thumbnails using Template Filter (scale max_x, max_y, or both)

Couldn't get the original to work, and wanted more functionality (scale on x or y coordinates) <img src="{{ object.image.url }}" alt="original image"> <img src="{{ object.image|thumbnail:"250w" }}" alt="image resized to 250w x (calculated/scaled)h "> <img src="{{ object.image|thumbnail:"250h" }}" alt="image resized to (calculated/scaled)w x 250h h "> <img src="{{ object.image|thumbnail:"250x200" }}" alt="image resized to 250wx200h "> <img src="{{ object.image|thumbnail }}" alt="image resized to default 200w (or whatever you default it to) format"> Original http://www.djangosnippets.org/snippets/192/ Adapted http://www.djangosnippets.org/snippets/955/ Sampled From: http://batiste.dosimple.ch/blog/2007-05-13-1/ http://vaig.be/2008/05/17/stdimagefield-improved-image-field-for-django/

  • template
  • filter
  • image
  • template-filter
  • thumbnail
  • templatetags
Read More

Crop and scale image to a given size

Prerequisites: [Python Imaging Library](http://www.pythonware.com/products/pil/) This function scales a given image (provided as binary data in any format the PIL supports) to a specified size. If the force parameter is True, the function makes sure that the resulting image is exactly the specified size, cropping and scaling it as necessary (but never distorting it) to make sure the whole image area is filled out. If force is False, it simply uses the thumbnail function provided by the PIL, which preserves the image aspect ratio and does not increase the image dimensions beyond those of the original file, so you may not get an image that has the exact dimensions you specified. The result image is returned as JPEG data.

  • thumbnail
  • crop
  • scale
Read More
Author: rpw
  • 3
  • 22

[UPDATE]Filter to resize a ImageField on demand + RATIO OPTION + CLEANUP

This is the snippet of rafacbd but upgraded... (http://djangosnippets.org/snippets/955/) Now support keep the aspect ratio or not, changing the size string (x1, x0) this choice use pil.resize or pil.thumbnail. Remember change the variable CAPS NAMES of the cleanup code. This cleanup function get the original main image file name and create a regexp similar to "[filename]_[width]x[height]x[ratio].[ext]" and remove all thumbs. By example if the main image is spain_rulez.jpg the script remove by example spain_rulez_100x100x1.jpg spain_rulez_200x150x0.jpg etc... etc...

  • template
  • image
  • thumbnail
  • cleanup
Read More

Generate thumbnails on save

This is an override the save method of our Photo model. This new save method essentially takes the image, thumbnails it into our various sets of dimensions (for … in self.IMAGE_SIZES…), and save each one (into its own ImageField) before finally call the overwritten method to save the original image. Yes, the dimensions are hardcoded, and there is currently not a way to regenerate them in different sizes, but one shouldn't be that hard to come up with, because you just could just load each photo object to regenerate, then save it again (or something along those lines). mattpdx helped a lot with figuring out this code.

  • thumbnail
Read More

Function to create resized versions of an image from a URL and saving it to a local path

This is a really useful function I used to create the resized preview images you can see on the [homepage of my site](http://www.obeattie.com/). Basically, it takes the original URL of an image on the internet, creates a resized version of that image by fitting it into the constraints specified (doesn't distort the image), and saves it to the MEDIA_ROOT with the filename you specify. For example, I use this by passing it the URL of a Flickr Image and letting it resize it to the required size, and then saving it to a local path. It then returns the local path to the image, should you need it. I however just construct a relative URL from the image_name and save that to the database. This way, it's easy to display this image. Hope it's useful!

  • image
  • pil
  • thumbnail
  • resize
Read More

ResizeImageField

ResizeImageField ================ (extension of RemovableImageField) ================================= by Wim Feijen, Go2People. What does it do? ---------------- ResizeImageField is a replacement for django's ImageField. It has two major benefits: 1. Creation of thumbnails and scaled images. 1. Extends the image upload form and adds a preview and a checkbox to remove the existing image. It's easy to use: - Replace ImageField by ResizeImageField - No further changes are necessary Requirements: ------------- Working installation of PIL, the Python Imaging Library Usage ----- - add resize_image to your app - add resize_filters.py to your templatetags - in settings.py, set a PHOTO_DIR, f.e. photos/original - in models.py, add: - from settings import PHOTO_DIR - from resize_image import ResizeImageField - photo = ResizeImageField(upload_to=PHOTO_DIR, blank=True) Scaled images will be stored in 'photos/scaled', thumbnails will be stored in 'photos/thumb'. Access your images from your template. Add:: {% load resize_filters %} {{ address.photo.url|thumb }} or:: {{ address.photo.url|scaled }} Defaults ------- - Scaled images are max. 200x200 pixels by default - Thumbnails are 50x50 pixels. Override the default behaviour in settings.py Scaling is done by PIL's thumbnail function, transparency is conserved. Credits ------ This code is an adaptation from python snippet 636 by tomZ: "Updated Filefield / ImageField with a delete checkbox"

  • image
  • thumbnail
  • resize
  • scale
  • delete
  • ImageField
  • ResizeImageField
  • removable
Read More
Author: wim
  • 5
  • 5

Image Standarization

Standarization of image fields (for being used when saving models). Automatically creates thumbnail. Change image name to /path/to/images/<my_field>-<id>.<ext>. Resize image and thumbnail to specified size (optionally can crop image to force size).

  • image
  • thumbnail
  • resize
  • rename
Read More