On Tue, 2011-04-12 at 16:38 +0200, Bertrand Mansion wrote:
> I'd love to see a tutorial on how to take a webpage screenshot using
> lqt. It seems that QPainter + QWebview could be useful for that but I
> didn't try yet, Qt doc is big...
require 'qtcore'
require 'qtgui'
require 'qtwebkit'
-- create a graphical application for QWebView to work, no arguments
app = QApplication.new(0, {})
-- create the WebKit view
local web = QWebView()
-- this will be run when the page is loaded
web:connect('2loadFinished(bool)', function()
-- create an image, choose your size
local image = QPixmap(640,480)
-- create a painter that will write to the image
local painter = QPainter()
painter:begin(image)
-- actually render the main frame to the painter
web:page():mainFrame():render(painter)
-- 'end' is a keyword in Lua, so you have to use this syntax
painter["end"](painter)
image:save("screenshot.jpg")
-- quit the event loop (static function)
app.quit()
end)
web:load(QUrl("http://www.lua.org"))
app.exec()
Thank you for the example :)
I had to install Xvfb in order to have it run on my Linux server that has no GUI, otherwise I had a "cannot connect to X Server" error. The rendering is a bit ugly and shows scrollbars, but I guess this can be improved.
