mirror of
https://github.com/ankitects/anki.git
synced 2025-09-20 15:02:21 -04:00
b23b6fbe35
Earlier today I pushed a change that split this code up into multiple repos, but that has proved to complicate things too much. So we're back to a single repo, except the individual submodules are better separated than they were before. The README files need updating again; I will push them out soon. Aside from splitting out the different modules, the sound code has moved from from anki to aqt.
431 lines
14 KiB
Python
431 lines
14 KiB
Python
# Copyright: Ankitects Pty Ltd and contributors
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# -*- coding: utf-8 -*-
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# License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
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import json
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import math
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import sys
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from anki.hooks import runHook
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from anki.lang import _
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from anki.utils import isLin, isMac, isWin
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from aqt.qt import *
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from aqt.utils import openLink
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# Page for debug messages
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##########################################################################
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class AnkiWebPage(QWebEnginePage): # type: ignore
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def __init__(self, onBridgeCmd):
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QWebEnginePage.__init__(self)
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self._onBridgeCmd = onBridgeCmd
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self._setupBridge()
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def _setupBridge(self):
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class Bridge(QObject):
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@pyqtSlot(str, result=str)
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def cmd(self, str):
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return json.dumps(self.onCmd(str))
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self._bridge = Bridge()
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self._bridge.onCmd = self._onCmd
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self._channel = QWebChannel(self)
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self._channel.registerObject("py", self._bridge)
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self.setWebChannel(self._channel)
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js = QFile(":/qtwebchannel/qwebchannel.js")
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assert js.open(QIODevice.ReadOnly)
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js = bytes(js.readAll()).decode("utf-8")
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script = QWebEngineScript()
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script.setSourceCode(
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js
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+ """
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var pycmd;
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new QWebChannel(qt.webChannelTransport, function(channel) {
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pycmd = function (arg, cb) {
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var resultCB = function (res) {
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// pass result back to user-provided callback
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if (cb) {
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cb(JSON.parse(res));
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}
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}
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channel.objects.py.cmd(arg, resultCB);
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return false;
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}
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pycmd("domDone");
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});
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"""
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)
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script.setWorldId(QWebEngineScript.MainWorld)
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script.setInjectionPoint(QWebEngineScript.DocumentReady)
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script.setRunsOnSubFrames(False)
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self.profile().scripts().insert(script)
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def javaScriptConsoleMessage(self, lvl, msg, line, srcID):
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# not translated because console usually not visible,
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# and may only accept ascii text
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buf = "JS error on line %(a)d: %(b)s" % dict(a=line, b=msg + "\n")
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# ensure we don't try to write characters the terminal can't handle
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buf = buf.encode(sys.stdout.encoding, "backslashreplace").decode(
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sys.stdout.encoding
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)
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sys.stdout.write(buf)
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def acceptNavigationRequest(self, url, navType, isMainFrame):
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if not isMainFrame:
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return True
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# data: links generated by setHtml()
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if url.scheme() == "data":
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return True
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# catch buggy <a href='#' onclick='func()'> links
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from aqt import mw
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if url.matches(QUrl(mw.serverURL()), QUrl.RemoveFragment):
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print("onclick handler needs to return false")
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return False
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# load all other links in browser
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openLink(url)
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return False
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def _onCmd(self, str):
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return self._onBridgeCmd(str)
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# Main web view
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##########################################################################
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class AnkiWebView(QWebEngineView): # type: ignore
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def __init__(self, parent=None):
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QWebEngineView.__init__(self, parent=parent)
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self.title = "default"
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self._page = AnkiWebPage(self._onBridgeCmd)
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self._page.setBackgroundColor(self._getWindowColor()) # reduce flicker
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self._domDone = True
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self._pendingActions = []
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self.requiresCol = True
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self.setPage(self._page)
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self._page.profile().setHttpCacheType(QWebEngineProfile.NoCache)
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self.resetHandlers()
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self.allowDrops = False
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self._filterSet = False
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QShortcut(
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QKeySequence("Esc"),
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self,
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context=Qt.WidgetWithChildrenShortcut,
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activated=self.onEsc,
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)
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if isMac:
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for key, fn in [
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(QKeySequence.Copy, self.onCopy),
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(QKeySequence.Paste, self.onPaste),
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(QKeySequence.Cut, self.onCut),
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(QKeySequence.SelectAll, self.onSelectAll),
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]:
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QShortcut(
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key, self, context=Qt.WidgetWithChildrenShortcut, activated=fn
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)
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QShortcut(
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QKeySequence("ctrl+shift+v"),
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self,
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context=Qt.WidgetWithChildrenShortcut,
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activated=self.onPaste,
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)
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def eventFilter(self, obj, evt):
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# disable pinch to zoom gesture
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if isinstance(evt, QNativeGestureEvent):
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return True
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elif evt.type() == QEvent.MouseButtonRelease:
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if evt.button() == Qt.MidButton and isLin:
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self.onMiddleClickPaste()
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return True
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return False
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return False
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def onEsc(self):
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w = self.parent()
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while w:
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if isinstance(w, QDialog) or isinstance(w, QMainWindow):
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from aqt import mw
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# esc in a child window closes the window
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if w != mw:
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w.close()
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else:
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# in the main window, removes focus from type in area
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self.parent().setFocus()
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break
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w = w.parent()
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def onCopy(self):
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self.triggerPageAction(QWebEnginePage.Copy)
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def onCut(self):
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self.triggerPageAction(QWebEnginePage.Cut)
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def onPaste(self):
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self.triggerPageAction(QWebEnginePage.Paste)
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def onMiddleClickPaste(self):
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self.triggerPageAction(QWebEnginePage.Paste)
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def onSelectAll(self):
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self.triggerPageAction(QWebEnginePage.SelectAll)
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def contextMenuEvent(self, evt):
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m = QMenu(self)
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a = m.addAction(_("Copy"))
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a.triggered.connect(self.onCopy)
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runHook("AnkiWebView.contextMenuEvent", self, m)
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m.popup(QCursor.pos())
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def dropEvent(self, evt):
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pass
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def setHtml(self, html):
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# discard any previous pending actions
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self._pendingActions = []
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self._domDone = True
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self._queueAction("setHtml", html)
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def _setHtml(self, html):
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app = QApplication.instance()
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oldFocus = app.focusWidget()
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self._domDone = False
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self._page.setHtml(html)
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# work around webengine stealing focus on setHtml()
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if oldFocus:
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oldFocus.setFocus()
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def zoomFactor(self):
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# overridden scale factor?
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webscale = os.environ.get("ANKI_WEBSCALE")
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if webscale:
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return float(webscale)
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if isMac:
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return 1
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screen = QApplication.desktop().screen()
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dpi = screen.logicalDpiX()
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factor = dpi / 96.0
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if isLin:
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factor = max(1, factor)
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return factor
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# compensate for qt's integer scaling on windows?
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if qtminor >= 14:
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return 1
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qtIntScale = self._getQtIntScale(screen)
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desiredScale = factor * qtIntScale
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newFactor = desiredScale / qtIntScale
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return max(1, newFactor)
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def _getQtIntScale(self, screen):
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# try to detect if Qt has scaled the screen
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# - qt will round the scale factor to a whole number, so a dpi of 125% = 1x,
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# and a dpi of 150% = 2x
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# - a screen with a normal physical dpi of 72 will have a dpi of 32
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# if the scale factor has been rounded to 2x
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# - different screens have different physical DPIs (eg 72, 93, 102)
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# - until a better solution presents itself, assume a physical DPI at
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# or above 70 is unscaled
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if screen.physicalDpiX() > 70:
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return 1
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elif screen.physicalDpiX() > 35:
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return 2
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else:
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return 3
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def _getWindowColor(self):
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if isMac:
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# standard palette does not return correct window color on macOS
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return QColor("#ececec")
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return self.style().standardPalette().color(QPalette.Window)
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def stdHtml(self, body, css=None, js=None, head=""):
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if css is None:
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css = []
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if js is None:
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js = ["jquery.js"]
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palette = self.style().standardPalette()
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color_hl = palette.color(QPalette.Highlight).name()
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if isWin:
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# T: include a font for your language on Windows, eg: "Segoe UI", "MS Mincho"
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family = _('"Segoe UI"')
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widgetspec = "button { font-size: 12px; font-family:%s; }" % family
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widgetspec += "\n:focus { outline: 1px solid %s; }" % color_hl
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fontspec = "font-size:12px;font-family:%s;" % family
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elif isMac:
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family = "Helvetica"
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fontspec = 'font-size:15px;font-family:"%s";' % family
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widgetspec = """
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button { font-size: 13px; -webkit-appearance: none; background: #fff; border: 1px solid #ccc;
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border-radius:5px; font-family: Helvetica }"""
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else:
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family = self.font().family()
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color_hl_txt = palette.color(QPalette.HighlightedText).name()
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color_btn = palette.color(QPalette.Button).name()
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fontspec = 'font-size:14px;font-family:"%s";' % family
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widgetspec = """
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/* Buttons */
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button{ font-size:14px; -webkit-appearance:none; outline:0;
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background-color: %(color_btn)s; border:1px solid rgba(0,0,0,.2);
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border-radius:2px; height:24px; font-family:"%(family)s"; }
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button:focus{ border-color: %(color_hl)s }
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button:hover{ background-color:#fff }
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button:active, button:active:hover { background-color: %(color_hl)s; color: %(color_hl_txt)s;}
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/* Input field focus outline */
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textarea:focus, input:focus, input[type]:focus, .uneditable-input:focus,
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div[contenteditable="true"]:focus {
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outline: 0 none;
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border-color: %(color_hl)s;
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}""" % {
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"family": family,
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"color_btn": color_btn,
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"color_hl": color_hl,
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"color_hl_txt": color_hl_txt,
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}
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csstxt = "\n".join(
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[self.bundledCSS("webview.css")] + [self.bundledCSS(fname) for fname in css]
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)
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jstxt = "\n".join(
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[self.bundledScript("webview.js")]
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+ [self.bundledScript(fname) for fname in js]
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)
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from aqt import mw
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head = mw.baseHTML() + head + csstxt + jstxt
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html = """
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<!doctype html>
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<html><head>
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<title>{}</title>
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<style>
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body {{ zoom: {}; background: {}; {} }}
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{}
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</style>
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{}
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</head>
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<body>{}</body>
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</html>""".format(
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self.title,
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self.zoomFactor(),
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self._getWindowColor().name(),
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fontspec,
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widgetspec,
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head,
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body,
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)
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# print(html)
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self.setHtml(html)
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def webBundlePath(self, path):
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from aqt import mw
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return "http://127.0.0.1:%d/_anki/%s" % (mw.mediaServer.getPort(), path)
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def bundledScript(self, fname):
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return '<script src="%s"></script>' % self.webBundlePath(fname)
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def bundledCSS(self, fname):
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return '<link rel="stylesheet" type="text/css" href="%s">' % self.webBundlePath(
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fname
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)
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def eval(self, js):
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self.evalWithCallback(js, None)
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def evalWithCallback(self, js, cb):
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self._queueAction("eval", js, cb)
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def _evalWithCallback(self, js, cb):
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if cb:
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def handler(val):
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if self._shouldIgnoreWebEvent():
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print("ignored late js callback", cb)
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return
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cb(val)
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self.page().runJavaScript(js, handler)
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else:
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self.page().runJavaScript(js)
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def _queueAction(self, name, *args):
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self._pendingActions.append((name, args))
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self._maybeRunActions()
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def _maybeRunActions(self):
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while self._pendingActions and self._domDone:
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name, args = self._pendingActions.pop(0)
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if name == "eval":
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self._evalWithCallback(*args)
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elif name == "setHtml":
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self._setHtml(*args)
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else:
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raise Exception("unknown action: {}".format(name))
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def _openLinksExternally(self, url):
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openLink(url)
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def _shouldIgnoreWebEvent(self):
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# async web events may be received after the profile has been closed
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# or the underlying webview has been deleted
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from aqt import mw
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if sip.isdeleted(self):
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return True
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if not mw.col and self.requiresCol:
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return True
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return False
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def _onBridgeCmd(self, cmd):
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if self._shouldIgnoreWebEvent():
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print("ignored late bridge cmd", cmd)
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return
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if not self._filterSet:
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self.focusProxy().installEventFilter(self)
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self._filterSet = True
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if cmd == "domDone":
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self._domDone = True
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self._maybeRunActions()
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else:
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return self.onBridgeCmd(cmd)
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def defaultOnBridgeCmd(self, cmd):
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print("unhandled bridge cmd:", cmd)
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def resetHandlers(self):
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self.onBridgeCmd = self.defaultOnBridgeCmd
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def adjustHeightToFit(self):
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self.evalWithCallback("$(document.body).height()", self._onHeight)
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def _onHeight(self, qvar):
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from aqt import mw
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if qvar is None:
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mw.progress.timer(1000, mw.reset, False)
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return
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scaleFactor = self.zoomFactor()
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if scaleFactor == 1:
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scaleFactor = mw.pm.uiScale()
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height = math.ceil(qvar * scaleFactor)
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self.setFixedHeight(height)
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