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#!/usr/bin/env python
# webkit2png - makes screenshots of webpages
# http://www.paulhammond.org/webkit2png
__version__ = "0.5"
# Copyright (c) 2009 Paul Hammond
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
import sys
import optparse
try:
import Foundation
import WebKit
import AppKit
import objc
except ImportError:
print "Cannot find pyobjc library files. Are you sure it is installed?"
sys.exit()
class AppDelegate (Foundation.NSObject):
# what happens when the app starts up
def applicationDidFinishLaunching_(self, aNotification):
webview = aNotification.object().windows()[0].contentView()
webview.frameLoadDelegate().getURL(webview)
self.performSelector_withObject_afterDelay_( "timeout:", None, 60 )
def timeout_(self, obj):
NSLog("timed out!")
NSApplication.sharedApplication().terminate_(None)
class WebkitLoad (Foundation.NSObject, WebKit.protocols.WebFrameLoadDelegate):
# what happens if something goes wrong while loading
def webView_didFailLoadWithError_forFrame_(self,webview,error,frame):
print " ... something went wrong: "+error.localizedDescription()
self.getURL(webview)
def webView_didFailProvisionalLoadWithError_forFrame_(self,webview,error,frame):
print " ... something went wrong: "+error.localizedDescription()
self.getURL(webview)
def makeFilename(self,URL,options):
# make the filename
if options.filename:
filename = options.filename
elif options.md5:
try:
import md5
except ImportError:
print "--md5 requires python md5 library"
AppKit.NSApplication.sharedApplication().terminate_(None)
filename = md5.new(URL).hexdigest()
else:
import re
filename = re.sub('\W','',URL);
filename = re.sub('^http','',filename);
if options.datestamp:
import time
now = time.strftime("%Y%m%d")
filename = now + "-" + filename
import os
dir = os.path.abspath(os.path.expanduser(options.dir))
return os.path.join(dir,filename)
def saveImages(self,bitmapdata,filename,options):
# save the fullsize png
if options.fullsize:
bitmapdata.representationUsingType_properties_(AppKit.NSPNGFileType,None).writeToFile_atomically_(filename + "-full.png",objc.YES)
if options.thumb or options.clipped:
# work out how big the thumbnail is
width = bitmapdata.pixelsWide()
height = bitmapdata.pixelsHigh()
thumbWidth = (width * options.scale)
thumbHeight = (height * options.scale)
# make the thumbnails in a scratch image
scratch = AppKit.NSImage.alloc().initWithSize_(
Foundation.NSMakeSize(thumbWidth,thumbHeight))
scratch.lockFocus()
AppKit.NSGraphicsContext.currentContext().setImageInterpolation_(
AppKit.NSImageInterpolationHigh)
thumbRect = Foundation.NSMakeRect(0.0, 0.0, thumbWidth, thumbHeight)
clipRect = Foundation.NSMakeRect(0.0,
thumbHeight-options.clipheight,
options.clipwidth, options.clipheight)
bitmapdata.drawInRect_(thumbRect)
thumbOutput = AppKit.NSBitmapImageRep.alloc().initWithFocusedViewRect_(thumbRect)
clipOutput = AppKit.NSBitmapImageRep.alloc().initWithFocusedViewRect_(clipRect)
scratch.unlockFocus()
# save the thumbnails as pngs
if options.thumb:
thumbOutput.representationUsingType_properties_(
AppKit.NSPNGFileType,None
).writeToFile_atomically_(filename + "-thumb.png",objc.YES)
if options.clipped:
clipOutput.representationUsingType_properties_(
AppKit.NSPNGFileType,None
).writeToFile_atomically_(filename + "-clipped.png",objc.YES)
def getURL(self,webview):
if self.urls:
if self.urls[0] == '-':
url = sys.stdin.readline().rstrip()
if not url: AppKit.NSApplication.sharedApplication().terminate_(None)
else:
url = self.urls.pop(0)
else:
AppKit.NSApplication.sharedApplication().terminate_(None)
print "Fetching", url, "..."
self.resetWebview(webview)
webview.mainFrame().loadRequest_(Foundation.NSURLRequest.requestWithURL_(Foundation.NSURL.URLWithString_(url)))
if not webview.mainFrame().provisionalDataSource():
print " ... not a proper url?"
self.getURL(webview)
def resetWebview(self,webview):
rect = Foundation.NSMakeRect(0,0,self.options.initWidth,self.options.initHeight)
webview.window().setContentSize_((self.options.initWidth,self.options.initHeight))
webview.setFrame_(rect)
def resizeWebview(self,view):
view.window().display()
view.window().setContentSize_(view.bounds().size)
view.setFrame_(view.bounds())
def captureView(self,view):
view.lockFocus()
bitmapdata = AppKit.NSBitmapImageRep.alloc()
bitmapdata.initWithFocusedViewRect_(view.bounds())
view.unlockFocus()
return bitmapdata
# what happens when the page has finished loading
def webView_didFinishLoadForFrame_(self,webview,frame):
# don't care about subframes
if (frame == webview.mainFrame()):
Foundation.NSTimer.scheduledTimerWithTimeInterval_target_selector_userInfo_repeats_( self.options.delay, self, self.doGrab, webview, False)
def doGrab(self,timer):
webview = timer.userInfo()
view = webview.mainFrame().frameView().documentView()
self.resizeWebview(view)
URL = webview.mainFrame().dataSource().initialRequest().URL().absoluteString()
filename = self.makeFilename(URL, self.options)
bitmapdata = self.captureView(view)
self.saveImages(bitmapdata,filename,self.options)
print " ... done"
self.getURL(webview)
def main():
# parse the command line
usage = """%prog [options] [http://example.net/ ...]
examples:
%prog http://google.com/ # screengrab google
%prog -W 1000 -H 1000 http://google.com/ # bigger screengrab of google
%prog -T http://google.com/ # just the thumbnail screengrab
%prog -TF http://google.com/ # just thumbnail and fullsize grab
%prog -o foo http://google.com/ # save images as "foo-thumb.png" etc
%prog - # screengrab urls from stdin
%prog -h | less # full documentation"""
cmdparser = optparse.OptionParser(usage,version=("webkit2png "+__version__))
# TODO: add quiet/verbose options
cmdparser.add_option("-W", "--width",type="float",default=800.0,
help="initial (and minimum) width of browser (default: 800)")
cmdparser.add_option("-H", "--height",type="float",default=600.0,
help="initial (and minimum) height of browser (default: 600)")
cmdparser.add_option("--clipwidth",type="float",default=200.0,
help="width of clipped thumbnail (default: 200)",
metavar="WIDTH")
cmdparser.add_option("--clipheight",type="float",default=150.0,
help="height of clipped thumbnail (default: 150)",
metavar="HEIGHT")
cmdparser.add_option("-s", "--scale",type="float",default=0.25,
help="scale factor for thumbnails (default: 0.25)")
cmdparser.add_option("-m", "--md5", action="store_true",
help="use md5 hash for filename (like del.icio.us)")
cmdparser.add_option("-o", "--filename", type="string",default="",
metavar="NAME", help="save images as NAME-full.png,NAME-thumb.png etc")
cmdparser.add_option("-F", "--fullsize", action="store_true",
help="only create fullsize screenshot")
cmdparser.add_option("-T", "--thumb", action="store_true",
help="only create thumbnail sreenshot")
cmdparser.add_option("-C", "--clipped", action="store_true",
help="only create clipped thumbnail screenshot")
cmdparser.add_option("-d", "--datestamp", action="store_true",
help="include date in filename")
cmdparser.add_option("-D", "--dir",type="string",default="./",
help="directory to place images into")
cmdparser.add_option("--delay",type="float",default=0,
help="delay between page load finishing and screenshot")
cmdparser.add_option("--noimages", action="store_true",
help="don't load images")
cmdparser.add_option("--debug", action="store_true",
help=optparse.SUPPRESS_HELP)
(options, args) = cmdparser.parse_args()
if len(args) == 0:
cmdparser.print_usage()
return
if options.filename:
if len(args) != 1 or args[0] == "-":
print "--filename option requires exactly one url"
return
if options.scale == 0:
cmdparser.error("scale cannot be zero")
# make sure we're outputing something
if not (options.fullsize or options.thumb or options.clipped):
options.fullsize = True
options.thumb = True
options.clipped = True
# work out the initial size of the browser window
# (this might need to be larger so clipped image is right size)
options.initWidth = (options.clipwidth / options.scale)
options.initHeight = (options.clipheight / options.scale)
if options.width>options.initWidth:
options.initWidth = options.width
if options.height>options.initHeight:
options.initHeight = options.height
app = AppKit.NSApplication.sharedApplication()
# create an app delegate
delegate = AppDelegate.alloc().init()
AppKit.NSApp().setDelegate_(delegate)
# create a window
rect = Foundation.NSMakeRect(0,0,100,100)
win = AppKit.NSWindow.alloc()
win.initWithContentRect_styleMask_backing_defer_ (rect,
AppKit.NSBorderlessWindowMask, 2, 0)
if options.debug:
win.orderFrontRegardless()
# create a webview object
webview = WebKit.WebView.alloc()
webview.initWithFrame_(rect)
# turn off scrolling so the content is actually x wide and not x-15
webview.mainFrame().frameView().setAllowsScrolling_(objc.NO)
webview.setPreferencesIdentifier_('webkit2png')
webview.preferences().setLoadsImagesAutomatically_(not options.noimages)
# add the webview to the window
win.setContentView_(webview)
# create a LoadDelegate
loaddelegate = WebkitLoad.alloc().init()
loaddelegate.options = options
loaddelegate.urls = args
webview.setFrameLoadDelegate_(loaddelegate)
app.run()
if __name__ == '__main__' : main()
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