Mercurial Repositories > eric / file comparison
comparison: UI/Previewers/PreviewerHTML.py
UI/Previewers/PreviewerHTML.py
- changeset 4615
- 7c090c9d389d
- parent 4021
- 195a471c327b
- child 4625
- ac72a3d8f89e
equal
deleted
inserted
replaced
| 4614:e8996f522895 | 4615:7c090c9d389d |
|---|---|
| 20 import shutil | 20 import shutil |
| 21 import tempfile | 21 import tempfile |
| 22 import sys | 22 import sys |
| 23 | 23 |
| 24 from PyQt5.QtCore import pyqtSlot, pyqtSignal, Qt, QUrl, QSize, QThread | 24 from PyQt5.QtCore import pyqtSlot, pyqtSignal, Qt, QUrl, QSize, QThread |
| 25 from PyQt5.QtWidgets import QWidget | 25 from PyQt5.QtWidgets import QWidget, QVBoxLayout, QLabel, QCheckBox, \ |
| 26 from PyQt5.QtWebKitWidgets import QWebPage | 26 QSizePolicy |
| 27 | 27 |
| 28 from E5Gui.E5Application import e5App | 28 from E5Gui.E5Application import e5App |
| 29 | |
| 30 from .Ui_PreviewerHTML import Ui_PreviewerHTML | |
| 31 | 29 |
| 32 import Utilities | 30 import Utilities |
| 33 import Preferences | 31 import Preferences |
| 34 | 32 |
| 35 | 33 |
| 36 class PreviewerHTML(QWidget, Ui_PreviewerHTML): | 34 class PreviewerHTML(QWidget): |
| 37 """ | 35 """ |
| 38 Class implementing a previewer widget for HTML, Markdown and ReST files. | 36 Class implementing a previewer widget for HTML, Markdown and ReST files. |
| 39 """ | 37 """ |
| 40 def __init__(self, parent=None): | 38 def __init__(self, parent=None): |
| 41 """ | 39 """ |
| 42 Constructor | 40 Constructor |
| 43 | 41 |
| 44 @param parent reference to the parent widget (QWidget) | 42 @param parent reference to the parent widget (QWidget) |
| 45 """ | 43 """ |
| 46 super(PreviewerHTML, self).__init__(parent) | 44 super(PreviewerHTML, self).__init__(parent) |
| 47 self.setupUi(self) | 45 |
| 46 self.__layout = QVBoxLayout(self) | |
| 47 | |
| 48 self.titleLabel = QLabel(self) | |
| 49 self.titleLabel.setWordWrap(True) | |
| 50 self.titleLabel.setTextInteractionFlags(Qt.NoTextInteraction) | |
| 51 self.__layout.addWidget(self.titleLabel) | |
| 52 | |
| 53 try: | |
| 54 from PyQt5.QtWebKitWidgets import QWebPage, QWebView | |
| 55 self.previewView = QWebView(self) | |
| 56 self.previewView.page().setLinkDelegationPolicy( | |
| 57 QWebPage.DelegateAllLinks) | |
| 58 self.__usesWebKit = True | |
| 59 except ImportError: | |
| 60 from PyQt5.QtWebEngineWidgets import QWebEngineView | |
| 61 self.previewView = QWebEngineView(self) | |
| 62 self.__usesWebKit = False | |
| 63 | |
| 64 sizePolicy = QSizePolicy(QSizePolicy.Preferred, QSizePolicy.Expanding) | |
| 65 sizePolicy.setHorizontalStretch(0) | |
| 66 sizePolicy.setVerticalStretch(0) | |
| 67 sizePolicy.setHeightForWidth( | |
| 68 self.previewView.sizePolicy().hasHeightForWidth()) | |
| 69 self.previewView.setSizePolicy(sizePolicy) | |
| 70 self.previewView.setContextMenuPolicy(Qt.NoContextMenu) | |
| 71 self.previewView.setUrl(QUrl("about:blank")) | |
| 72 self.__layout.addWidget(self.previewView) | |
| 73 | |
| 74 self.jsCheckBox = QCheckBox(self.tr("Enable JavaScript"), self) | |
| 75 self.jsCheckBox.setToolTip(self.tr( | |
| 76 "Select to enable JavaScript for HTML previews")) | |
| 77 self.__layout.addWidget(self.jsCheckBox) | |
| 78 | |
| 79 self.ssiCheckBox = QCheckBox(self.tr("Enable Server Side Includes"), | |
| 80 self) | |
| 81 self.ssiCheckBox.setToolTip(self.tr( | |
| 82 "Select to enable support for Server Side Includes")) | |
| 83 self.__layout.addWidget(self.ssiCheckBox) | |
| 84 | |
| 85 self.jsCheckBox.clicked[bool].connect(self.on_jsCheckBox_clicked) | |
| 86 self.ssiCheckBox.clicked[bool].connect(self.on_ssiCheckBox_clicked) | |
| 87 self.previewView.titleChanged.connect(self.on_previewView_titleChanged) | |
| 88 if self.__usesWebKit: | |
| 89 self.previewView.linkClicked.connect( | |
| 90 self.on_previewView_linkClicked) | |
| 48 | 91 |
| 49 self.jsCheckBox.setChecked( | 92 self.jsCheckBox.setChecked( |
| 50 Preferences.getUI("ShowFilePreviewJS")) | 93 Preferences.getUI("ShowFilePreviewJS")) |
| 51 self.ssiCheckBox.setChecked( | 94 self.ssiCheckBox.setChecked( |
| 52 Preferences.getUI("ShowFilePreviewSSI")) | 95 Preferences.getUI("ShowFilePreviewSSI")) |
| 53 | |
| 54 self.previewView.page().setLinkDelegationPolicy( | |
| 55 QWebPage.DelegateAllLinks) | |
| 56 | 96 |
| 57 self.__scrollBarPositions = {} | 97 self.__scrollBarPositions = {} |
| 58 self.__vScrollBarAtEnd = {} | 98 self.__vScrollBarAtEnd = {} |
| 59 self.__hScrollBarAtEnd = {} | 99 self.__hScrollBarAtEnd = {} |
| 60 | 100 |
| 156 positions. | 196 positions. |
| 157 | 197 |
| 158 @param filePath file path of the previewed editor (string) | 198 @param filePath file path of the previewed editor (string) |
| 159 @param html processed HTML text ready to be shown (string) | 199 @param html processed HTML text ready to be shown (string) |
| 160 """ | 200 """ |
| 161 self.__saveScrollBarPositions() | |
| 162 self.__previewedPath = Utilities.normcasepath( | 201 self.__previewedPath = Utilities.normcasepath( |
| 163 Utilities.fromNativeSeparators(filePath)) | 202 Utilities.fromNativeSeparators(filePath)) |
| 164 self.previewView.page().mainFrame().contentsSizeChanged.connect( | 203 if self.__usesWebKit: |
| 165 self.__restoreScrollBarPositions) | 204 self.__saveScrollBarPositions() |
| 205 self.previewView.page().mainFrame().contentsSizeChanged.connect( | |
| 206 self.__restoreScrollBarPositions) | |
| 166 self.previewView.setHtml(html, baseUrl=QUrl.fromLocalFile(filePath)) | 207 self.previewView.setHtml(html, baseUrl=QUrl.fromLocalFile(filePath)) |
| 167 | 208 |
| 168 @pyqtSlot(str) | 209 @pyqtSlot(str) |
| 169 def on_previewView_titleChanged(self, title): | 210 def on_previewView_titleChanged(self, title): |
| 170 """ | 211 """ |
| 179 | 220 |
| 180 def __saveScrollBarPositions(self): | 221 def __saveScrollBarPositions(self): |
| 181 """ | 222 """ |
| 182 Private method to save scroll bar positions for a previewed editor. | 223 Private method to save scroll bar positions for a previewed editor. |
| 183 """ | 224 """ |
| 184 frame = self.previewView.page().mainFrame() | 225 if self.__usesWebKit: |
| 185 if frame.contentsSize() == QSize(0, 0): | 226 frame = self.previewView.page().mainFrame() |
| 186 return # no valid data, nothing to save | 227 if frame.contentsSize() == QSize(0, 0): |
| 187 | 228 return # no valid data, nothing to save |
| 188 pos = frame.scrollPosition() | 229 |
| 189 self.__scrollBarPositions[self.__previewedPath] = pos | 230 pos = frame.scrollPosition() |
| 190 self.__hScrollBarAtEnd[self.__previewedPath] = \ | 231 self.__scrollBarPositions[self.__previewedPath] = pos |
| 191 frame.scrollBarMaximum(Qt.Horizontal) == pos.x() | 232 self.__hScrollBarAtEnd[self.__previewedPath] = \ |
| 192 self.__vScrollBarAtEnd[self.__previewedPath] = \ | 233 frame.scrollBarMaximum(Qt.Horizontal) == pos.x() |
| 193 frame.scrollBarMaximum(Qt.Vertical) == pos.y() | 234 self.__vScrollBarAtEnd[self.__previewedPath] = \ |
| 235 frame.scrollBarMaximum(Qt.Vertical) == pos.y() | |
| 194 | 236 |
| 195 def __restoreScrollBarPositions(self): | 237 def __restoreScrollBarPositions(self): |
| 196 """ | 238 """ |
| 197 Private method to restore scroll bar positions for a previewed editor. | 239 Private method to restore scroll bar positions for a previewed editor. |
| 198 """ | 240 """ |
| 199 try: | 241 if self.__usesWebKit: |
| 200 self.previewView.page().mainFrame().contentsSizeChanged.disconnect( | 242 try: |
| 201 self.__restoreScrollBarPositions) | 243 self.previewView.page().mainFrame().contentsSizeChanged.\ |
| 202 except TypeError: | 244 disconnect(self.__restoreScrollBarPositions) |
| 203 # not connected, simply ignore it | 245 except TypeError: |
| 204 pass | 246 # not connected, simply ignore it |
| 205 | 247 pass |
| 206 if self.__previewedPath not in self.__scrollBarPositions: | 248 |
| 207 return | 249 if self.__previewedPath not in self.__scrollBarPositions: |
| 208 | 250 return |
| 209 frame = self.previewView.page().mainFrame() | 251 |
| 210 frame.setScrollPosition( | 252 frame = self.previewView.page().mainFrame() |
| 211 self.__scrollBarPositions[self.__previewedPath]) | 253 frame.setScrollPosition( |
| 212 | 254 self.__scrollBarPositions[self.__previewedPath]) |
| 213 if self.__hScrollBarAtEnd[self.__previewedPath]: | 255 |
| 214 frame.setScrollBarValue( | 256 if self.__hScrollBarAtEnd[self.__previewedPath]: |
| 215 Qt.Horizontal, frame.scrollBarMaximum(Qt.Horizontal)) | 257 frame.setScrollBarValue( |
| 216 | 258 Qt.Horizontal, frame.scrollBarMaximum(Qt.Horizontal)) |
| 217 if self.__vScrollBarAtEnd[self.__previewedPath]: | 259 |
| 218 frame.setScrollBarValue( | 260 if self.__vScrollBarAtEnd[self.__previewedPath]: |
| 219 Qt.Vertical, frame.scrollBarMaximum(Qt.Vertical)) | 261 frame.setScrollBarValue( |
| 262 Qt.Vertical, frame.scrollBarMaximum(Qt.Vertical)) | |
| 220 | 263 |
| 221 @pyqtSlot(QUrl) | 264 @pyqtSlot(QUrl) |
| 222 def on_previewView_linkClicked(self, url): | 265 def on_previewView_linkClicked(self, url): |
| 223 """ | 266 """ |
| 224 Private slot handling the clicking of a link. | 267 Private slot handling the clicking of a link. |
