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Diffstat (limited to 'src/python/mtemu.py')
| -rw-r--r-- | src/python/mtemu.py | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/src/python/mtemu.py b/src/python/mtemu.py new file mode 100644 index 0000000..3bd348f --- /dev/null +++ b/src/python/mtemu.py @@ -0,0 +1,166 @@ +#!/usr/bin/env python +# -*- coding: utf-8 -*- + +# libavg - Media Playback Engine. +# Copyright (C) 2003-2014 Ulrich von Zadow +# +# 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 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +# +# Current versions can be found at www.libavg.de +# Original author of this file is Sebastian Maulbeck +# <sm (at) archimedes-solutions (dot) de> + +''' +Multitouch emulation helper, supporting pinch gestures +''' + +from libavg import avg, Point2D, player + + +class MTemu(object): + MOUSE_STATE_UP = 'MOUSE_STATE_UP' + MOUSE_STATE_DOWN = 'MOUSE_STATE_DOWN' + + def __init__(self): + self.__mouseState = self.MOUSE_STATE_UP + self.__cursorID = 0 + self.__dualTouch = False + self.__secondTouch = False + self.__source = avg.Event.TOUCH + + self.__oldEventHook = player.getEventHook() + player.setEventHook(self.__onEvent) + + root = player.getRootNode() + self.__caption = avg.WordsNode(pos=(root.size.x - 15, root.size.y - 20), + alignment = 'right', + color='DDDDDD', + sensitive=False, + fontsize=14, + parent=root) + self.__updateCaption() + + def deinit(self): + player.setEventHook(self.__oldEventHook) + self.__caption.unlink() + if self.__mouseState == self.MOUSE_STATE_DOWN: + self.__releaseTouch(self.__cursorID) + if self.__secondTouch: + self.__releaseTouch(self.__cursorID+1) + + def toggleSource(self): + ''' + Switch between avg.Event.TOUCH and avg.Event.TRACK - source + ''' + self.__clearSourceState() + self.__source = (avg.Event.TOUCH if self.__source == avg.Event.TRACK + else avg.Event.TRACK) + self.__updateCaption() + + def toggleDualTouch(self): + self.__dualTouch = not(self.__dualTouch) + self.__clearDualtouchState() + + def enableDualTouch(self): + self.__dualTouch = True + self.__clearDualtouchState() + + def disableDualTouch(self): + self.__dualTouch = False + self.__clearDualtouchState() + + def __clearSourceState(self): + if self.__mouseState == self.MOUSE_STATE_DOWN: + self.__releaseTouch(self.__cursorID) + if self.__secondTouch: + self.__releaseTouch(self.__cursorID+1) + self.__mouseState = self.MOUSE_STATE_UP + self.__secondTouch = False + + def __clearDualtouchState(self): + if self.__mouseState == self.MOUSE_STATE_DOWN: + if self.__secondTouch: + self.__releaseTouch(self.__cursorID+1) + else: + self.__sendFakeTouch(self.__cursorID+1, Point2D(0,0), + avg.Event.CURSOR_DOWN, mirror=True) + self.__secondTouch = not(self.__secondTouch) + + def __updateCaption(self): + self.__caption.text = 'Multitouch emulation (%s source)' % self.__source + + def __onEvent(self, event): + if event.source == avg.Event.MOUSE: + if event.type == avg.Event.CURSOR_DOWN: + self.__onMouseDown(event) + elif event.type == avg.Event.CURSOR_MOTION: + self.__onMouseMotion(event) + elif event.type == avg.Event.CURSOR_UP: + self.__onMouseUp(event) + return True + else: + return False + + def __onMouseDown(self, event): + self._initialPos = event.pos + if self.__mouseState == self.MOUSE_STATE_UP and event.button == 1: + self.__sendFakeTouch(self.__cursorID, event.pos, event.type) + if self.__dualTouch and not self.__secondTouch: + self.__sendFakeTouch(self.__cursorID+1, event.pos, event.type, + True) + self.__secondTouch = True + self.__mouseState = self.MOUSE_STATE_DOWN + + def __onMouseMotion(self, event): + if self.__mouseState == self.MOUSE_STATE_DOWN: + self.__sendFakeTouch(self.__cursorID, event.pos, event.type) + if self.__dualTouch and self.__secondTouch: + self.__sendFakeTouch(self.__cursorID+1, event.pos, + event.type, True) + + def __onMouseUp(self, event): + if self.__mouseState == self.MOUSE_STATE_DOWN and event.button == 1: + self.__sendFakeTouch(self.__cursorID, event.pos, event.type) + if self.__dualTouch and self.__secondTouch: + self.__sendFakeTouch(self.__cursorID+1, event.pos, + event.type, True) + self.__secondTouch = False + self.__mouseState = self.MOUSE_STATE_UP + self.__cursorID += 2 #Even for left uneven for right touch + + def __sendFakeTouch(self, cursorID, pos, touchType, mirror=False): + offset = Point2D(0,0) + if self.__dualTouch: + offset = Point2D(40, 0) + if mirror: + pos = 2*(self._initialPos)-pos + offset = -offset + player.getTestHelper().fakeTouchEvent(cursorID, + touchType, self.__source, self.__clampPos(pos+offset)) + + def __releaseTouch(self, cursorID): + self.__sendFakeTouch(cursorID, Point2D(0,0), avg.Event.CURSOR_UP) + + def __clampPos(self, pos): + if pos[0] < 0: + pos[0] = 0 + if pos[1] < 0: + pos[1] = 0 + if pos[0] >= player.getRootNode().size[0]: + pos[0] = player.getRootNode().size[0]-1 + if pos[1] >= player.getRootNode().size[1]: + pos[1] = player.getRootNode().size[1]-1 + return pos + |