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# Orca # # Copyright 2005-2008 Sun Microsystems Inc. # Copyright 2018-2019 Igalia, S.L. # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2.1 of the License, or (at your option) any later version. # # This library 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 # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the # Free Software Foundation, Inc., Franklin Street, Fifth Floor, # Boston MA 02110-1301 USA. """Provides support for synthesizing accessible input events.""" __id__ = "$Id$" __version__ = "$Revision$" __date__ = "$Date$" __copyright__ = "Copyright (c) 2005-2008 Sun Microsystems Inc." \ "Copyright (c) 2018 Igalia, S.L." __license__ = "LGPL" import gi import pyatspi gi.require_version("Gtk", "3.0") from gi.repository import Gtk from . import debug try: _canScrollTo = pyatspi.Component.scrollTo is not None except: _canScrollTo = False _banner = None def _getMouseCoordinates(): """Returns the current mouse coordinates.""" rootWindow = Gtk.Window().get_screen().get_root_window() window, x, y, modifiers = rootWindow.get_pointer() msg = "EVENT SYNTHESIZER: Mouse coordinates: %d,%d" % (x, y) debug.println(debug.LEVEL_INFO, msg, True) return x, y def _generateMouseEvent(x, y, event): """Synthesize a mouse event at a specific screen coordinate.""" oldX, oldY = _getMouseCoordinates() msg = "EVENT SYNTHESIZER: Generating %s mouse event at %d,%d" % (event, x, y) debug.println(debug.LEVEL_INFO, msg, True) pyatspi.Registry.generateMouseEvent(x, y, event) newX, newY = _getMouseCoordinates() if oldX == newX and oldY == newY and (oldX, oldY) != (x, y): msg = "EVENT SYNTHESIZER: Mouse event possible failure. Pointer didn't move" debug.println(debug.LEVEL_INFO, msg, True) return False return True def _intersection(extents1, extents2): """Returns the bounding box containing the intersection of the two boxes.""" x1, y1, width1, height1 = extents1 x2, y2, width2, height2 = extents2 xPoints1 = range(x1, x1 + width1 + 1) xPoints2 = range(x2, x2 + width2 + 1) xIntersection = sorted(set(xPoints1).intersection(set(xPoints2))) yPoints1 = range(y1, y1 + height1 + 1) yPoints2 = range(y2, y2 + height2 + 1) yIntersection = sorted(set(yPoints1).intersection(set(yPoints2))) if not (xIntersection and yIntersection): return 0, 0, 0, 0 x = xIntersection[0] y = yIntersection[0] width = xIntersection[-1] - x height = yIntersection[-1] - y return x, y, width, height def _extentsAtCaret(obj): """Returns the character extents of obj at the current caret offset.""" try: text = obj.queryText() extents = text.getCharacterExtents(text.caretOffset, pyatspi.DESKTOP_COORDS) except: msg = "ERROR: Exception getting character extents for %s" % obj debug.println(debug.LEVEL_INFO, msg, True) return 0, 0, 0, 0 return extents def _objectExtents(obj): """Returns the bounding box associated with obj.""" try: extents = obj.queryComponent().getExtents(pyatspi.DESKTOP_COORDS) except: msg = "ERROR: Exception getting extents for %s" % obj debug.println(debug.LEVEL_INFO, msg, True) return 0, 0, 0, 0 return extents def _mouseEventOnCharacter(obj, event): """Performs the specified mouse event on the current character in obj.""" extents = _extentsAtCaret(obj) if extents == (0, 0, 0, 0): return False objExtents = _objectExtents(obj) intersection = _intersection(extents, objExtents) if intersection == (0, 0, 0, 0): msg = "EVENT SYNTHESIZER: %s's caret %s not in obj %s" % (obj, extents, objExtents) debug.println(debug.LEVEL_INFO, msg, True) return False x = max(extents[0], extents[0] + (extents[2] / 2) - 1) y = extents[1] + extents[3] / 2 return _generateMouseEvent(x, y, event) def _mouseEventOnObject(obj, event): """Performs the specified mouse event on obj.""" extents = _objectExtents(obj) if extents == (0, 0, 0, 0): return False x = extents.x + extents.width/2 y = extents.y + extents.height/2 return _generateMouseEvent(x, y, event) def routeToCharacter(obj): """Routes the pointer to the current character in obj.""" return _mouseEventOnCharacter(obj, "abs") def routeToObject(obj): """Moves the mouse pointer to the center of obj.""" return _mouseEventOnObject(obj, "abs") def routeToPoint(x, y): """Routes the pointer to the specified coordinates.""" return _generateMouseEvent(x, y, "abs") def clickCharacter(obj, button=1): """Single click on the current character in obj using the specified button.""" return _mouseEventOnCharacter(obj, "b%dc" % button) def clickObject(obj, button=1): """Single click on obj using the specified button.""" return _mouseEventOnObject(obj, "b%dc" % button) def clickPoint(x, y, button=1): """Single click on the given point using the specified button.""" return _generateMouseEvent(x, y, "b%dc" % button) def doubleClickCharacter(obj, button=1): """Double click on the current character in obj using the specified button.""" return _mouseEventOnCharacter(obj, "b%dd" % button) def doubleClickObject(obj, button=1): """Double click on obj using the specified button.""" return _mouseEventOnObject(obj, "b%dd" % button) def doubleClickPoint(x, y, button=1): """Double click on the given point using the specified button.""" return _generateMouseEvent(x, y, "b%dd" % button) def pressAtCharacter(obj, button=1): """Performs a press on the current character in obj using the specified button.""" return _mouseEventOnCharacter(obj, "b%dp" % button) def pressAtObject(obj, button=1): """Performs a press on obj using the specified button.""" return _mouseEventOnObject(obj, "b%dp" % button) def pressAtPoint(x, y, button=1): """Performs a press on the given point using the specified button.""" return _generateMouseEvent(x, y, "b%dp" % button) def releaseAtCharacter(obj, button=1): """Performs a release on the current character in obj using the specified button.""" return _mouseEventOnCharacter(obj, "b%dr" % button) def releaseAtObject(obj, button=1): """Performs a release on obj using the specified button.""" return _mouseEventOnObject(obj, "b%dr" % button) def releaseAtPoint(x, y, button=1): """Performs a release on the given point using the specified button.""" return _generateMouseEvent(x, y, "b%dr" % button) def _scrollSubstringToLocation(obj, location, startOffset, endOffset): """Attemps to scroll the given substring to the specified location.""" try: text = obj.queryText() if not text.characterCount: return False if startOffset is None: startOffset = 0 if endOffset is None: endOffset = text.characterCount - 1 result = text.scrollSubstringTo(startOffset, endOffset, location) except NotImplementedError: msg = "ERROR: Text interface not implemented for %s" % obj debug.println(debug.LEVEL_INFO, msg, True) return False except: msg = "ERROR: Exception scrolling %s (%i,%i) to %s." % \ (obj, startOffset, endOffset, location) debug.println(debug.LEVEL_INFO, msg, True) return False msg = "EVENT SYNTHESIZER: scrolled %s (%i,%i) to %s: %s" % \ (obj, startOffset, endOffset, location, result) debug.println(debug.LEVEL_INFO, msg, True) return result def _scrollObjectToLocation(obj, location): """Attemps to scroll obj to the specified location.""" try: result = obj.queryComponent().scrollTo(location) except NotImplementedError: msg = "ERROR: Component interface not implemented for %s" % obj debug.println(debug.LEVEL_INFO, msg, True) return False except: msg = "ERROR: Exception scrolling %s to %s." % (obj, location) debug.println(debug.LEVEL_INFO, msg, True) return False msg = "EVENT SYNTHESIZER: scrolled %s to %s: %s" % (obj, location, result) debug.println(debug.LEVEL_INFO, msg, True) return result def _scrollToLocation(obj, location, startOffset=None, endOffset=None): """Attemps to scroll to the specified location.""" try: component = obj.queryComponent() except: msg = "ERROR: Exception querying component of %s" % obj debug.println(debug.LEVEL_INFO, msg, True) return before = component.getExtents(pyatspi.DESKTOP_COORDS) if not _scrollSubstringToLocation(obj, location, startOffset, endOffset): _scrollObjectToLocation(obj, location) after = component.getExtents(pyatspi.DESKTOP_COORDS) msg = "EVENT SYNTHESIZER: Before scroll: %i,%i. After scroll: %i,%i." % \ (before[0], before[1], after[0], after[1]) debug.println(debug.LEVEL_INFO, msg, True) def _scrollSubstringToPoint(obj, x, y, startOffset, endOffset): """Attemps to scroll the given substring to the specified location.""" try: text = obj.queryText() if not text.characterCount: return False if startOffset is None: startOffset = 0 if endOffset is None: endOffset = text.characterCount - 1 result = text.scrollSubstringToPoint(startOffset, endOffset, pyatspi.DESKTOP_COORDS, x, y) except NotImplementedError: msg = "ERROR: Text interface not implemented for %s" % obj debug.println(debug.LEVEL_INFO, msg, True) return False except: msg = "ERROR: Exception scrolling %s (%i,%i) to %i,%i." % \ (obj, startOffset, endOffset, x, y) debug.println(debug.LEVEL_INFO, msg, True) return False msg = "EVENT SYNTHESIZER: scrolled %s (%i,%i) to %i,%i: %s" % \ (obj, startOffset, endOffset, x, y, result) debug.println(debug.LEVEL_INFO, msg, True) return result def _scrollObjectToPoint(obj, x, y): """Attemps to scroll obj to the specified point.""" try: result = obj.queryComponent().scrollToPoint(pyatspi.DESKTOP_COORDS, x, y) except NotImplementedError: msg = "ERROR: Component interface not implemented for %s" % obj debug.println(debug.LEVEL_INFO, msg, True) return False except: msg = "ERROR: Exception scrolling %s to %i,%i." % (obj, x, y) debug.println(debug.LEVEL_INFO, msg, True) return False msg = "EVENT SYNTHESIZER: scrolled %s to %i,%i: %s" % (obj, x, y, result) debug.println(debug.LEVEL_INFO, msg, True) return result def _scrollToPoint(obj, x, y, startOffset=None, endOffset=None): """Attemps to scroll obj to the specified point.""" try: component = obj.queryComponent() except: msg = "ERROR: Exception querying component of %s" % obj debug.println(debug.LEVEL_INFO, msg, True) return before = component.getExtents(pyatspi.DESKTOP_COORDS) if not _scrollSubstringToPoint(obj, x, y, startOffset, endOffset): _scrollObjectToPoint(obj, x, y) after = component.getExtents(pyatspi.DESKTOP_COORDS) msg = "EVENT SYNTHESIZER: Before scroll: %i,%i. After scroll: %i,%i." % \ (before[0], before[1], after[0], after[1]) debug.println(debug.LEVEL_INFO, msg, True) def scrollIntoView(obj, startOffset=None, endOffset=None): if not _canScrollTo: msg = "INFO: Installed version of AT-SPI2 doesn't support scrolling." debug.println(debug.LEVEL_INFO, msg, True) return _scrollToLocation(obj, pyatspi.SCROLL_ANYWHERE, startOffset, endOffset) def _containingDocument(obj): roles = [pyatspi.ROLE_DOCUMENT_EMAIL, pyatspi.ROLE_DOCUMENT_FRAME, pyatspi.ROLE_DOCUMENT_PRESENTATION, pyatspi.ROLE_DOCUMENT_SPREADSHEET, pyatspi.ROLE_DOCUMENT_TEXT, pyatspi.ROLE_DOCUMENT_WEB] isDocument = lambda x: x and x.getRole() in roles document = pyatspi.findAncestor(obj, isDocument) while document: ancestor = pyatspi.findAncestor(document, isDocument) if not ancestor or ancestor == document: break document = ancestor return document def _isDead(obj): try: obj.name except: return True return False def _getAccessibleAtPoint(root, x, y): try: result = root.queryComponent().getAccessibleAtPoint(x, y, pyatspi.DESKTOP_COORDS) except NotImplementedError: msg = "ERROR: Component interface not implemented for %s" % root debug.println(debug.LEVEL_INFO, msg, True) return None except: msg = "ERROR: Exception getting accessible at (%i, %i) for %s" % (x, y, root) debug.println(debug.LEVEL_INFO, msg, True) return None msg = "EVENT SYNTHESIZER: Accessible at (%i, %i) in %s: %s" % (x, y, root, result) debug.println(debug.LEVEL_INFO, msg, True) return result def _obscuringBanner(obj): document = _containingDocument(obj) if not document and "Component" in pyatspi.listInterfaces(document): return None objX, objY, objWidth, objHeight = _objectExtents(obj) docX, docY, docWidth, docHeight = _objectExtents(document) left = _getAccessibleAtPoint(document, docX, objY) right = _getAccessibleAtPoint(document, docX + docWidth, objY) if not (left and right and left == right != document): msg = "EVENT SYNTHESIZER: No obscuring banner found for %s" % obj debug.println(debug.LEVEL_INFO, msg, True) return None msg = "EVENT SYNTHESIZER: %s believed to be obscured by banner %s" % (obj, left) debug.println(debug.LEVEL_INFO, msg, True) return left def _scrollBelowBanner(obj, banner, startOffset, endOffset, margin=25): objX, objY, objWidth, objHeight = _objectExtents(obj) bannerX, bannerY, bannerWidth, bannerHeight = _objectExtents(banner) msg = "EVENT SYNTHESIZER: Extents of banner: (%i, %i, %i, %i)" % \ (bannerX, bannerY, bannerWidth, bannerHeight) debug.println(debug.LEVEL_INFO, msg, True) _scrollToPoint(obj, objX, bannerY + bannerHeight + margin, startOffset, endOffset) def scrollToTopEdge(obj, startOffset=None, endOffset=None): if not _canScrollTo: msg = "INFO: Installed version of AT-SPI2 doesn't support scrolling." debug.println(debug.LEVEL_INFO, msg, True) return global _banner if _banner and not _isDead(_banner): msg = "EVENT SYNTHESIZER: Suspected existing banner found: %s" % _banner debug.println(debug.LEVEL_INFO, msg, True) _scrollBelowBanner(obj, _banner, startOffset, endOffset) return _scrollToLocation(obj, pyatspi.SCROLL_TOP_EDGE, startOffset, endOffset) _banner = _obscuringBanner(obj) if _banner: msg = "EVENT SYNTHESIZER: Rescrolling %s due to banner" % obj _scrollBelowBanner(obj, _banner, startOffset, endOffset) debug.println(debug.LEVEL_INFO, msg, True) def scrollToTopLeft(obj, startOffset=None, endOffset=None): if not _canScrollTo: msg = "INFO: Installed version of AT-SPI2 doesn't support scrolling." debug.println(debug.LEVEL_INFO, msg, True) return _scrollToLocation(obj, pyatspi.SCROLL_TOP_LEFT, startOffset, endOffset) def scrollToLeftEdge(obj, startOffset=None, endOffset=None): if not _canScrollTo: msg = "INFO: Installed version of AT-SPI2 doesn't support scrolling." debug.println(debug.LEVEL_INFO, msg, True) return _scrollToLocation(obj, pyatspi.SCROLL_LEFT_EDGE, startOffset, endOffset) def scrollToBottomEdge(obj, startOffset=None, endOffset=None): if not _canScrollTo: msg = "INFO: Installed version of AT-SPI2 doesn't support scrolling." debug.println(debug.LEVEL_INFO, msg, True) return _scrollToLocation(obj, pyatspi.SCROLL_BOTTOM_EDGE, startOffset, endOffset) def scrollToBottomRight(obj, startOffset=None, endOffset=None): if not _canScrollTo: msg = "INFO: Installed version of AT-SPI2 doesn't support scrolling." debug.println(debug.LEVEL_INFO, msg, True) return _scrollToLocation(obj, pyatspi.SCROLL_BOTTOM_RIGHT, startOffset, endOffset) def scrollToRightEdge(obj, startOffset=None, endOffset=None): if not _canScrollTo: msg = "INFO: Installed version of AT-SPI2 doesn't support scrolling." debug.println(debug.LEVEL_INFO, msg, True) return _scrollToLocation(obj, pyatspi.SCROLL_RIGHT_EDGE, startOffset, endOffset) def _performNamedAction(obj, name): try: action = obj.queryAction() except NotImplementedError: msg = "ERROR: Action interface not implemented for %s" % obj debug.println(debug.LEVEL_INFO, msg, True) return False for i in range(action.nActions): if action.getName(i).lower() == name.lower(): rv = action.doAction(i) msg = "EVENT SYNTHESIZER: %s on %s result: %s" % (name, obj, rv) debug.println(debug.LEVEL_INFO, msg, True) return rv msg = "INFO: %s not an available action for %s" % (name, obj) debug.println(debug.LEVEL_INFO, msg, True) return False def activateActionOn(obj): return _performNamedAction(obj, "activate") def clickActionOn(obj): return _performNamedAction(obj, "click") def pressActionOn(obj): return _performNamedAction(obj, "press") def grabFocusOn(obj): try: component = obj.queryComponent() except: msg = "ERROR: Exception querying component of %s" % obj debug.println(debug.LEVEL_INFO, msg, True) return False return component.grabFocus()

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