PyQt5将Textedit保存到图像
[英]PyQt5 save Textedit to image
问题描述
I would like to save Qtexedit's text to a image preferable a PNG. 
我想将Qtexedit的文本保存到最好是PNG的图像中。
i read in thread Rich text to image in Qt by Dmitry Sazonov 我在Dtry Sazonov的 Qt中以线程富文本格式读取图像
it can maybe be done using QTextEdit::document QTextDocument::drawContents 可以使用QTextEdit :: document QTextDocument :: drawContents完成
However i do not find any examples out there. 但是我没有找到任何例子。
1 个解决方案
解决方案1
1 已采纳 2018-01-04 18:26:47
The first thing you must do is create a QPixmap with an appropriate size, fill it with some background color, then create a QPainter , this will be responsible for drawing on the QPixmap , we use drawContents() to draw, we finish the painting with end() , at the end we save it with the save() function of QPixmap . 您必须做的第一件事是创建一个具有适当大小的QPixmap ，用一些背景色填充它，然后创建一个QPainter ，这将负责在QPixmap上进行绘制，我们使用drawContents()进行绘制，并完成绘制end() ，最后我们使用QPixmap的save()函数将其save() 。
Example: 例：
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
html = """<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN" "http://www.w3.org/TR/REC-html40/strict.dtd">
<html><head><meta name="qrichtext" content="1" /><style type="text/css">
p, li { white-space: pre-wrap; }
</style></head><body style=" font-family:'Cantarell'; font-size:11pt; font-weight:400; font-style:normal;">
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-family:'Open Sans,Arial,sans-serif'; font-size:14px; font-style:italic; color:#000000; background-color:#ffffff;">Lorem ipsum</span><span style=" font-family:'Open Sans,Arial,sans-serif'; font-size:14px; color:#000000; background-color:#ffffff;"> dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. </span><span style=" font-family:'Open Sans,Arial,sans-serif'; font-size:14px; font-weight:600; color:#000000; background-color:#ffffff;">Duis aute irure dolor</span><span style=" font-family:'Open Sans,Arial,sans-serif'; font-size:14px; color:#000000; background-color:#ffffff;"> in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, </span><span style=" font-family:'Open Sans,Arial,sans-serif'; font-size:14px; text-decoration: underline; color:#000000; background-color:#ffffff;">sunt in culpa qui officia deserunt mollit anim id est laborum.</span></p>
<p style="-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-family:'Open Sans,Arial,sans-serif'; font-size:14px; text-decoration: underline; color:#000000;"><br /></p>
<p align="center" style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-family:'Open Sans,Arial,sans-serif'; font-size:14px; color:#000000; background-color:#ffffff;">Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium, totam rem aperiam, eaque ipsa quae ab illo inventore veritatis et quasi architecto beatae vitae dicta sunt explicabo. Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit, sed quia non numquam eius modi tempora incidunt ut labore et dolore magnam aliquam quaerat voluptatem. Ut enim ad minima veniam, quis nostrum exercitationem ullam corporis suscipit laboriosam, nisi ut aliquid ex ea commodi consequatur? Quis autem vel eum iure reprehenderit qui in ea voluptate velit esse quam nihil molestiae consequatur, vel illum qui dolorem eum fugiat quo voluptas nulla pariatur?</span></p></body></html>"""
def save(doc):
pixmap = QPixmap(doc.idealWidth(), doc.size().height())
pixmap.fill(Qt.white)
painter = QPainter(pixmap)
doc.drawContents(painter, QRectF(0, 0, doc.idealWidth(), doc.size().height()))
painter.end()
pixmap.save("output.png", "PNG")
if __name__ == '__main__':
import sys
app = QApplication(sys.argv)
w = QWidget()
lay = QVBoxLayout(w)
btn = QPushButton("Save")
te = QTextEdit()
lay.addWidget(btn)
lay.addWidget(te)
te.setHtml(html)
w.show()
btn.clicked.connect(lambda checked, doc=te.document(): save(doc))
sys.exit(app.exec_())
GUI GUI
PNG PNG
Plus: 加：
If you want to invert the colors of each pixel, it would be more appropriate to use QImage : 如果要反转每个像素的颜色，则使用QImage更合适：
def save(doc):
image = QImage(doc.idealWidth(), doc.size().height(), QImage.Format_RGB32)
image.fill(Qt.white)
painter = QPainter(image)
doc.drawContents(painter, QRectF(0, 0, doc.idealWidth(), doc.size().height()))
painter.end()
image.invertPixels(QImage.InvertRgb)
image.save("output.png", "PNG")
声明:本站的技术帖子网页，遵循CC BY-SA 4.0协议，如果您需要转载，请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.