Merge remote-tracking branch 'origin/pr/3864'

qutebrowser/browser/webengine/webenginetab.py

@@ -705,6 +705,10 @@ class WebEngineTab(browsertab.AbstractTab):
             utils.read_file('javascript/webelem.js'),
             utils.read_file('javascript/caret.js'),
         )
+        self._inject_early_js('js',
+                              utils.read_file('javascript/print.js'),
+                              subframes=True,
+                              world=QWebEngineScript.MainWorld)
         # FIXME:qtwebengine what about subframes=True?
         self._inject_early_js('js', js_code, subframes=True)
         self._init_stylesheet()
@@ -1061,6 +1065,13 @@ class WebEngineTab(browsertab.AbstractTab):
     def _on_navigation_request(self, navigation):
         super()._on_navigation_request(navigation)
 
+        if navigation.url == QUrl('qute://print'):
+            command_dispatcher = objreg.get('command-dispatcher',
+                                            scope='window',
+                                            window=self.win_id)
+            command_dispatcher.printpage()
+            navigation.accepted = False
+
         if not navigation.accepted or not navigation.is_main_frame:
             return
 

qutebrowser/javascript/print.js

@@ -0,0 +1,30 @@
+/**
+ * Copyright 2018 Florian Bruhin (The Compiler) <mail@qutebrowser.org>
+ *
+ * This file is part of qutebrowser.
+ *
+ * qutebrowser is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * qutebrowser is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with qutebrowser.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * this is a hack based on the QupZilla solution, https://github.com/QupZilla/qupzilla/commit/d3f0d766fb052dc504de2426d42f235d96b5eb60
+ *
+ * We go to a qute://print which triggers the print, then we cancel the request.
+ */
+
+"use strict";
+
+window.print = function() {
+    window.location = "qute://print";
+};