diff -r babe80d84a3e -r 7eb04391adf7 eric6/UI/Previewers/PreviewerHTML.py
--- a/eric6/UI/Previewers/PreviewerHTML.py Mon Sep 09 18:52:08 2019 +0200
+++ b/eric6/UI/Previewers/PreviewerHTML.py Thu Oct 03 11:12:10 2019 +0200
@@ -7,13 +7,6 @@
Module implementing a previewer widget for HTML, Markdown and ReST files.
"""
-from __future__ import unicode_literals
-
-try: # Only for Py2
- import StringIO as io # __IGNORE_EXCEPTION__
- str = unicode
-except (ImportError, NameError):
- import io # __IGNORE_WARNING__
import os
import threading
@@ -21,11 +14,13 @@
import shutil
import tempfile
import sys
+import io
-from PyQt5.QtCore import pyqtSlot, pyqtSignal, Qt, QUrl, QSize, QThread
+from PyQt5.QtCore import pyqtSlot, pyqtSignal, Qt, QUrl, QThread
from PyQt5.QtGui import QCursor
-from PyQt5.QtWidgets import QWidget, QVBoxLayout, QLabel, QCheckBox, \
- QSizePolicy, QToolTip
+from PyQt5.QtWidgets import (
+ QWidget, QVBoxLayout, QLabel, QCheckBox, QSizePolicy, QToolTip
+)
from E5Gui.E5Application import e5App
@@ -58,22 +53,14 @@
from PyQt5.QtWebEngineWidgets import QWebEngineView
self.previewView = QWebEngineView(self)
self.previewView.page().linkHovered.connect(self.__showLink)
- self.__usesWebKit = False
except ImportError:
- try:
- from PyQt5.QtWebKitWidgets import QWebPage, QWebView
- self.previewView = QWebView(self)
- self.previewView.page().setLinkDelegationPolicy(
- QWebPage.DelegateAllLinks)
- self.__usesWebKit = True
- except ImportError:
- self.__previewAvailable = False
- self.titleLabel.setText(self.tr(
- "<b>HTML Preview is not available!<br/>"
- "Install QtWebEngine or QtWebKit.</b>"))
- self.titleLabel.setAlignment(Qt.AlignHCenter)
- self.__layout.addStretch()
- return
+ self.__previewAvailable = False
+ self.titleLabel.setText(self.tr(
+ "<b>HTML Preview is not available!<br/>"
+ "Install QtWebEngine.</b>"))
+ self.titleLabel.setAlignment(Qt.AlignHCenter)
+ self.__layout.addStretch()
+ return
sizePolicy = QSizePolicy(QSizePolicy.Preferred, QSizePolicy.Expanding)
sizePolicy.setHorizontalStretch(0)
@@ -99,9 +86,6 @@
self.jsCheckBox.clicked[bool].connect(self.on_jsCheckBox_clicked)
self.ssiCheckBox.clicked[bool].connect(self.on_ssiCheckBox_clicked)
self.previewView.titleChanged.connect(self.on_previewView_titleChanged)
- if self.__usesWebKit:
- self.previewView.linkClicked.connect(
- self.on_previewView_linkClicked)
self.jsCheckBox.setChecked(
Preferences.getUI("ShowFilePreviewJS"))
@@ -189,17 +173,23 @@
extension = os.path.normcase(os.path.splitext(fn)[1][1:])
else:
extension = ""
- if extension in \
- Preferences.getEditor("PreviewHtmlFileNameExtensions") or \
- editor.getLanguage() == "HTML":
+ if (
+ extension in Preferences.getEditor(
+ "PreviewHtmlFileNameExtensions") or
+ editor.getLanguage() == "HTML"
+ ):
language = "HTML"
- elif extension in \
- Preferences.getEditor("PreviewMarkdownFileNameExtensions") or \
- editor.getLanguage().lower() == "markdown":
+ elif (
+ extension in Preferences.getEditor(
+ "PreviewMarkdownFileNameExtensions") or
+ editor.getLanguage().lower() == "markdown"
+ ):
language = "Markdown"
- elif extension in \
- Preferences.getEditor("PreviewRestFileNameExtensions") or \
- editor.getLanguage().lower() == "restructuredtext":
+ elif (
+ extension in Preferences.getEditor(
+ "PreviewRestFileNameExtensions") or
+ editor.getLanguage().lower() == "restructuredtext"
+ ):
language = "ReST"
else:
self.__setHtml(fn, self.tr(
@@ -239,14 +229,10 @@
self.__previewedPath = Utilities.normcasepath(
Utilities.fromNativeSeparators(filePath))
self.__saveScrollBarPositions()
- if self.__usesWebKit:
- self.previewView.page().mainFrame().contentsSizeChanged.connect(
- self.__restoreScrollBarPositions)
- else:
- self.previewView.page().loadFinished.connect(
- self.__restoreScrollBarPositions)
- if not filePath:
- filePath = "/"
+ self.previewView.page().loadFinished.connect(
+ self.__restoreScrollBarPositions)
+ if not filePath:
+ filePath = "/"
if rootPath:
baseUrl = QUrl.fromLocalFile(rootPath + "/index.html")
else:
@@ -271,84 +257,39 @@
"""
Private method to save scroll bar positions for a previewed editor.
"""
- if self.__usesWebKit:
- frame = self.previewView.page().mainFrame()
- if frame.contentsSize() == QSize(0, 0):
- return # no valid data, nothing to save
-
- pos = frame.scrollPosition()
- self.__scrollBarPositions[self.__previewedPath] = pos
- self.__hScrollBarAtEnd[self.__previewedPath] = \
- frame.scrollBarMaximum(Qt.Horizontal) == pos.x()
- self.__vScrollBarAtEnd[self.__previewedPath] = \
- frame.scrollBarMaximum(Qt.Vertical) == pos.y()
- else:
- from PyQt5.QtCore import QPoint
- try:
- pos = self.previewView.scrollPosition()
- except AttributeError:
- pos = self.__execJavaScript(
- "(function() {"
- "var res = {"
- " x: 0,"
- " y: 0,"
- "};"
- "res.x = window.scrollX;"
- "res.y = window.scrollY;"
- "return res;"
- "})()"
- )
- if pos is not None:
- pos = QPoint(pos["x"], pos["y"])
- else:
- pos = QPoint(0, 0)
- self.__scrollBarPositions[self.__previewedPath] = pos
- self.__hScrollBarAtEnd[self.__previewedPath] = False
- self.__vScrollBarAtEnd[self.__previewedPath] = False
+ from PyQt5.QtCore import QPoint
+ try:
+ pos = self.previewView.scrollPosition()
+ except AttributeError:
+ pos = self.__execJavaScript(
+ "(function() {"
+ "var res = {"
+ " x: 0,"
+ " y: 0,"
+ "};"
+ "res.x = window.scrollX;"
+ "res.y = window.scrollY;"
+ "return res;"
+ "})()"
+ )
+ if pos is not None:
+ pos = QPoint(pos["x"], pos["y"])
+ else:
+ pos = QPoint(0, 0)
+ self.__scrollBarPositions[self.__previewedPath] = pos
+ self.__hScrollBarAtEnd[self.__previewedPath] = False
+ self.__vScrollBarAtEnd[self.__previewedPath] = False
def __restoreScrollBarPositions(self):
"""
Private method to restore scroll bar positions for a previewed editor.
"""
- if self.__usesWebKit:
- try:
- self.previewView.page().mainFrame().contentsSizeChanged.\
- disconnect(self.__restoreScrollBarPositions)
- except TypeError:
- # not connected, simply ignore it
- pass
-
- if self.__previewedPath not in self.__scrollBarPositions:
- return
-
- frame = self.previewView.page().mainFrame()
- frame.setScrollPosition(
- self.__scrollBarPositions[self.__previewedPath])
-
- if self.__hScrollBarAtEnd[self.__previewedPath]:
- frame.setScrollBarValue(
- Qt.Horizontal, frame.scrollBarMaximum(Qt.Horizontal))
-
- if self.__vScrollBarAtEnd[self.__previewedPath]:
- frame.setScrollBarValue(
- Qt.Vertical, frame.scrollBarMaximum(Qt.Vertical))
- else:
- if self.__previewedPath not in self.__scrollBarPositions:
- return
-
- pos = self.__scrollBarPositions[self.__previewedPath]
- self.previewView.page().runJavaScript(
- "window.scrollTo({0}, {1});".format(pos.x(), pos.y()))
-
- @pyqtSlot(QUrl)
- def on_previewView_linkClicked(self, url):
- """
- Private slot handling the clicking of a link.
+ if self.__previewedPath not in self.__scrollBarPositions:
+ return
- @param url URL of the clicked link
- @type QUrl
- """
- e5App().getObject("UserInterface").launchHelpViewer(url)
+ pos = self.__scrollBarPositions[self.__previewedPath]
+ self.previewView.page().runJavaScript(
+ "window.scrollTo({0}, {1});".format(pos.x(), pos.y()))
def __execJavaScript(self, script):
"""
@@ -717,9 +658,11 @@
extensions = ['fenced_code', 'extra']
# version 2.0 supports only extension names, not instances
- if markdown.version_info[0] > 2 or \
- (markdown.version_info[0] == 2 and
- markdown.version_info[1] > 0):
+ if (
+ markdown.version_info[0] > 2 or
+ (markdown.version_info[0] == 2 and
+ markdown.version_info[1] > 0)
+ ):
class _StrikeThroughExtension(markdown.Extension):
"""
Class is placed here, because it depends on imported markdown,
