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Take screenshot of <body> with html2canvas and store img as JS var

由 萝らか妹 提交于 2021-02-07 13:26:53
问题 I am attempting to let users on my site push a button to take a screenshot of the current screen ( everything in body). From my research, html2canvas seems to be a resource that makes this possible. My issue is the documentation does not provide example code and I am struggling to get a grip on the steps involved. http://html2canvas.hertzen.com/documentation.html The following SO question ( How to upload a screenshot using html2canvas? ) leaves me a bit confused. I just want to know how to

can JLabel have img tags

由 [亡魂溺海] 提交于 2021-02-07 13:25:42
问题 I am trying to display a JLabel which has a few lines of text and an image as follows: String html = "<html> hello </br> <img src = \"/absolute/path/here\" height = \"30\" width =\"40\"/> </html>"; JLabel l = new JLabel(html); For the image all I get is a broken image, is it possible to nest img tags inside a JLabel? EDIT: I want to add multiple images to the JLabel so I don't think the use of an ImageIcon will do here. Thanks 回答1: Rather then try to have multiple images on a single JLabel

Take screenshot of <body> with html2canvas and store img as JS var

由 那年仲夏 提交于 2021-02-07 13:25:10
问题 I am attempting to let users on my site push a button to take a screenshot of the current screen ( everything in body). From my research, html2canvas seems to be a resource that makes this possible. My issue is the documentation does not provide example code and I am struggling to get a grip on the steps involved. http://html2canvas.hertzen.com/documentation.html The following SO question ( How to upload a screenshot using html2canvas? ) leaves me a bit confused. I just want to know how to

Find median of list of images

由 99封情书 提交于 2021-02-07 13:24:07
问题 If I have a list of images represented by 3D ndarray such as [[x,y,color],...] , what operations can I use to output an image with values that are median of all values? I am using a for loop and find it too slow. 回答1: You said your images in color, formatted as a list of 3d ndarrays . Let's say there are n images: imgs = [img_1, ..., img_n] Where imgs is a list and each img_i is a an ndarray with shape (nrows, ncols, 3) . Convert the list to a 4d ndarray, then take the median over the

How do I store the location of an image in a database?

由 泪湿孤枕 提交于 2021-02-07 13:24:06
问题 I have a list of colors, with textures that I want to show to particular users, so I need to load the image of the colors that a particular user has, the color's information is contained in a ObjecDTO and one of the properties is its image path. My question is how should I store the image path in the database, are there any special rules, for example since the database and the image file are on the same server should I store a complete file URL, or a relative url, what characters should I

Convert Image object to rgb pixel array and back in Flutter

由 半城伤御伤魂 提交于 2021-02-07 12:48:17
问题 Is there a way to get an image's rgb matrix representation? and vice versa? I would like to perform image masking/filtering on the original image so it needs to be applied to its rgb matrix representation. Currently using this library to get an image from a device: https://pub.dartlang.org/packages/image_picker 回答1: https://pub.dartlang.org/packages/image provides image conversion and manipulation utility functions. 回答2: import 'dart:ui' as ui; import 'package:flutter/material.dart'; // for a

Draw Marker in Image

由 烈酒焚心 提交于 2021-02-07 12:44:06
问题 I'm drawing a picture using Matplotlib: plt.imshow(bild) plt.show() How do I add a Marker to this (eg. red dot / arrow) using the coordinates of the image? 回答1: You can also use plt.scatter to add a red dot to mark the point. Building on the previous answer's example code: import matplotlib.pyplot as plt import numpy as np img = np.random.randn(100, 100) plt.figure() plt.imshow(img) plt.annotate('25, 50', xy=(25, 50), xycoords='data', xytext=(0.5, 0.5), textcoords='figure fraction',

How do I make 2 images appear side by side in Jupyter notebook (iPython)?

由 最后都变了- 提交于 2021-02-07 11:46:01
问题 I want to display 2 PNG images in iPython side by side. My code to do this is: from IPython.display import Image, HTML, display img_A = '\path\to\img_A.png' img_B = '\path\to\img_B.png' display(HTML("<table><tr><td><img src=img_A></td><td><img src=img_B></td></tr></table>")) But it doesn't output the images, and instead only displays placeholders for the 2 images: I tried the following as well: s = """<table> <tr> <th><img src="%s"/></th> <th><img src="%s"/></th> </tr></table>"""%(img_A, img

How do I make 2 images appear side by side in Jupyter notebook (iPython)?

由 浪尽此生 提交于 2021-02-07 11:45:05
问题 I want to display 2 PNG images in iPython side by side. My code to do this is: from IPython.display import Image, HTML, display img_A = '\path\to\img_A.png' img_B = '\path\to\img_B.png' display(HTML("<table><tr><td><img src=img_A></td><td><img src=img_B></td></tr></table>")) But it doesn't output the images, and instead only displays placeholders for the 2 images: I tried the following as well: s = """<table> <tr> <th><img src="%s"/></th> <th><img src="%s"/></th> </tr></table>"""%(img_A, img

Insert an image from url in openpyxl

由 你说的曾经没有我的故事 提交于 2021-02-07 10:55:29
问题 I would like to insert an image from URL into the xlsx file. How could I do that with openpyxl? I checked the documentation but not shows how to insert an image from URL. 回答1: There is no built-in function in Openpyxl to insert images through URLs. You'll need to use an Http client module for python.(example: urllib ) import openpyxl from openpyxl.writer.excel import save_virtual_workbook from openpyxl.drawing.image import Image import PIL import io import urllib3 wb = openpyxl.Workbook() ws
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