From 41301f33309be9121041a6320c24d8a0675264ae Mon Sep 17 00:00:00 2001 From: Manuel Kaufmann Date: Sat, 11 Aug 2012 21:23:13 +0000 Subject: Initial commit --- diff --git a/COPYING b/COPYING new file mode 100644 index 0000000..623b625 --- /dev/null +++ b/COPYING @@ -0,0 +1,340 @@ + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc. + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. By contrast, the GNU General Public +License is intended to guarantee your freedom to share and change free +software--to make sure the software is free for all its users. This +General Public License applies to most of the Free Software +Foundation's software and to any other program whose authors commit to +using it. (Some other Free Software Foundation software is covered by +the GNU Library General Public License instead.) You can apply it to +your programs, too. + + When we speak of free software, we are referring to freedom, not +price. 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See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + + +Also add information on how to contact you by electronic and paper mail. + +If the program is interactive, make it output a short notice like this +when it starts in an interactive mode: + + Gnomovision version 69, Copyright (C) year name of author + Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, the commands you use may +be called something other than `show w' and `show c'; they could even be +mouse-clicks or menu items--whatever suits your program. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the program, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the program + `Gnomovision' (which makes passes at compilers) written by James Hacker. + + , 1 April 1989 + Ty Coon, President of Vice + +This General Public License does not permit incorporating your program into +proprietary programs. If your program is a subroutine library, you may +consider it more useful to permit linking proprietary applications with the +library. If this is what you want to do, use the GNU Library General +Public License instead of this License. diff --git a/activity.py b/activity.py new file mode 100644 index 0000000..185bf0b --- /dev/null +++ b/activity.py @@ -0,0 +1,78 @@ +# Copyright 2012 Manuel Kaufmann +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program 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 General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + +"""HelloTouchGesture Activity: A case study for developing an activity.""" + +from gi.repository import Gtk + +from sugar3.activity import activity +from sugar3.graphics.toolbarbox import ToolbarBox +from sugar3.activity.widgets import ActivityButton +from sugar3.activity.widgets import TitleEntry +from sugar3.activity.widgets import StopButton +from sugar3.activity.widgets import ShareButton +from sugar3.activity.widgets import DescriptionItem + +from touch import TouchWidget + + +class HelloTouchGestureActivity(activity.Activity): + """HelloTouchGestureActivity class as specified in activity.info""" + + def __init__(self, handle): + """Set up the HelloTouchGesture activity.""" + activity.Activity.__init__(self, handle) + + # we do not have collaboration features + # make the share option insensitive + self.max_participants = 1 + + # toolbar with the new toolbar redesign + toolbar_box = ToolbarBox() + + activity_button = ActivityButton(self) + toolbar_box.toolbar.insert(activity_button, 0) + activity_button.show() + + title_entry = TitleEntry(self) + toolbar_box.toolbar.insert(title_entry, -1) + title_entry.show() + + description_item = DescriptionItem(self) + toolbar_box.toolbar.insert(description_item, -1) + description_item.show() + + share_button = ShareButton(self) + toolbar_box.toolbar.insert(share_button, -1) + share_button.show() + + separator = Gtk.SeparatorToolItem() + separator.props.draw = False + separator.set_expand(True) + toolbar_box.toolbar.insert(separator, -1) + separator.show() + + stop_button = StopButton(self) + toolbar_box.toolbar.insert(stop_button, -1) + stop_button.show() + + self.set_toolbar_box(toolbar_box) + toolbar_box.show() + + # label with the text, make the string translatable + widget = TouchWidget() + self.set_canvas(widget) + widget.show() diff --git a/activity/activity-hellotouchgesture.svg b/activity/activity-hellotouchgesture.svg new file mode 100644 index 0000000..8da7c63 --- /dev/null +++ b/activity/activity-hellotouchgesture.svg @@ -0,0 +1,26 @@ + + +]> + + + + + + + + + + + + + + diff --git a/activity/activity.info b/activity/activity.info new file mode 100644 index 0000000..5061fd3 --- /dev/null +++ b/activity/activity.info @@ -0,0 +1,7 @@ +[Activity] +name = Hello Touch Gesture +activity_version = 1 +bundle_id = org.sugarlabs.HelloTouchGesture +exec = sugar-activity activity.HelloTouchGestureActivity +icon = activity-hellotouchgesture +license = GPLv2+ diff --git a/moosegesture.py b/moosegesture.py new file mode 100644 index 0000000..ec731dc --- /dev/null +++ b/moosegesture.py @@ -0,0 +1,292 @@ +""" +"MooseGesture 0.1" a mouse gestures recognition library. +Al Sweigart al@coffeeghost.net +http://coffeeghost.net/2011/05/09/moosegesture-python-mouse-gestures-module + +Usage: + import moosegesture + gesture = moosegesture.getGesture(points) + +Where "points" is a list of x, y coordinate tuples, e.g. [(100, 200), (1234, 5678), ...] +getGesture returns a list of integers for the recognized mouse gesture. The integers +correspond to the 8 cardinal and diagonal directions: + + up-left up up-right + 7 8 9 + + left 4 6 right + + 1 2 3 +down-left down down-right + +Second usage: + strokes = [2, 4, 6] + gestures = [[2, 4, 2], [2, 6, 9]] + gesture = moosegesture.findClosestMatchingGesture(strokes, gestures) + + gesture == [2, 4, 2] + +Where "strokes" is a list of the directional integers that are returned from +getGesture(). This returns the closest resembling gesture from the list of +gestures that is passed to the function. + +The optional "tolerance" parameter can ensure that the "closest" identified +gesture isn't too different. + + +Explanation of the nomenclature in this module: + A "point" is a 2D tuple of x, y values. These values can be ints or floats, + MooseGesture supports both. + + A "point pair" is a point and its immediately subsequent point, i.e. two + points that are next to each other. + + A "segment" is two or more ordered points forming a series of lines. + + A "stroke" is a segment going in a single direction (one of the 8 cardinal or + diagonal directions: up, upright, left, etc.) + + A "gesture" is one or more strokes in a specific pattern, e.g. up then right + then down then left. + + +# Copyright (c) 2011, Al Sweigart +# All rights reserved. +# +# BSD-style license: +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions are met: +# * Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# * Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# * Neither the name of the MooseGesture nor the +# names of its contributors may be used to endorse or promote products +# derived from this software without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY Al Sweigart "AS IS" AND ANY +# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +# DISCLAIMED. IN NO EVENT SHALL Al Sweigart BE LIABLE FOR ANY +# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES +# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; +# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND +# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +""" + +from math import sqrt +from sys import maxsize + +# This is the minimum distance the mouse must travel (in pixels) before a +# segment will be considered for stroke interpretation. +_MIN_SEG_LEN = 60 + +# The integers-to-directions mapping matches the keypad: +# 7 8 9 +# 4 6 +# 1 2 3 +DOWNLEFT = 1 +DOWN = 2 +DOWNRIGHT = 3 +LEFT = 4 +RIGHT = 6 +UPLEFT = 7 +UP = 8 +UPRIGHT = 9 + +_strokesStrings = {1:'DL', 2:'D', 3:'DR', 4:'L', 6:'R', 7:'UL', 8:'U', 9:'UR'} + +def getGesture(points): + # Returns a gesture as a list of directional integers, i.e. [2,6,4] for + # the down-left-right gesture. + # + # The points param is a list of tuples of XY points that make up the user's + # mouse gesture. + return _identifyStrokes(points)[0] + +def getSegments(points): + # Returns a list of tuples of integers. The tuples are the start and end + # indexes of the points that make up a consistent stroke. + return _identifyStrokes(points)[1] + +def getGestureAndSegments(points): + # Returns a list of tuples. The first item in the tuple is the directional + # integer, and the second item is a tuple of integers for the start and end + # indexes of the points that make up the stroke. + strokes, strokeSegments = _identifyStrokes(points) + return list(zip(strokes, strokeSegments)) + +def getGestureStr(strokes): + # Returns a string of space-delimited text characters that represent the + # strokes passed in. For example, getGesture([2, 6, 4]) returns "D R L". + # + # The strokes parameter is a list of directional integers, like the kind + # returned by getGesture(). + if len(strokes) and type(strokes[0]) == type(0): + # points is a list of directional integers, returned from getGesture() + return ' '.join(_strokesStrings[x] for x in strokes) + else: + # points is returned from getGestureAndSegments() + return ' '.join(_strokesStrings[x] for x in _identifyStrokes(strokes)[0]) + +def findClosestMatchingGesture(strokes, gestureList, tolerance=maxsize): + # Returns the gesture in gestureList that closest matches the gesture in + # strokes. The tolerance is how many differences there can be and still + # be considered a match. + if len(gestureList) == 0: + return None + + strokes = ''.join(strokes) + gestureList = [''.join(x) for x in gestureList] + gestureList = list(frozenset(gestureList)) # make a unique list + distances = {} + for g in gestureList: + dist = levenshteinDistance(strokes, g) + if dist in distances: + distances[dist].append(g) + else: + distances[dist] = [g] + smallestKey = min(distances.keys()) + if len(distances[smallestKey]) == 1 and smallestKey <= tolerance: + return [int(x) for x in distances[min(distances.keys())]] + else: + return None + +def levenshteinDistance(s1, s2): + # Returns the Levenshtein Distance between two strings as an integer. + + # http://en.wikipedia.org/wiki/Levenshtein_distance + # The Levenshtein Distance (aka edit distance) is how many changes (i.e. + # insertions, deletions, substitutions) have to be made to convert one + # string into another. + # + # For example, the Levenshtein distance between "kitten" and "sitting" is + # 3, since the following three edits change one into the other, and there + # is no way to do it with fewer than three edits: + # kitten -> sitten -> sittin -> sitting + len1 = len(s1) + len2 = len(s2) + + matrix = list(range(len1 + 1)) * (len2 + 1) + for i in range(len2 + 1): + matrix[i] = list(range(i, i + len1 + 1)) + for i in range(len2): + for j in range(len1): + if s1[j] == s2[i]: + matrix[i+1][j+1] = min(matrix[i+1][j] + 1, matrix[i][j+1] + 1, matrix[i][j]) + else: + matrix[i+1][j+1] = min(matrix[i+1][j] + 1, matrix[i][j+1] + 1, matrix[i][j] + 1) + return matrix[len2][len1] + +def setMinStrokeLen(val): + # Set the length (in pixels) a stroke must be to be recognized as a stroke. + _MIN_SEG_LEN = val + +def getMinStrokeLen(): + # Get the minimum segment length. + return _MIN_SEG_LEN + + + + +# Private Functions: + +def _identifyStrokes(points): + strokes = [] + strokeSegments = [] + + # calculate lengths between each sequential points + distances = [] + for i in range(len(points)-1): + distances.append( _distance(points[i], points[i+1]) ) + + # keeps getting points until we go past the min. segment length + #startSegPoint = 0 + #while startSegPoint < len(points)-1: + for startSegPoint in range(len(points)-1): + segmentDist = 0 + curDir = None + consistent = True + direction = None + for curSegPoint in range(startSegPoint, len(points)-1): + segmentDist += distances[curSegPoint] + if segmentDist >= _MIN_SEG_LEN: + # check if all points are going the same direction. + for i in range(startSegPoint, curSegPoint): + direction = _getDir(points[i], points[i+1]) + if curDir is None: + curDir = direction + elif direction != curDir: + consistent = False + break + break + if not consistent: + continue + elif (direction is not None and ( (not len(strokes)) or (len(strokes) and strokes[-1] != direction) )): + strokes.append(direction) + strokeSegments.append( [startSegPoint, curSegPoint] ) + elif len(strokeSegments): + # update and lengthen the latest stroke since this stroke is being lengthened. + strokeSegments[-1][1] = curSegPoint + return strokes, strokeSegments + +def _getDir(coord1, coord2): + # Return the integer of one of the 8 directions this line is going in. + # coord1 and coord2 are (x, y) integers coordinates. + x1, y1 = coord1 + x2, y2 = coord2 + + if x1 == x2 and y1 == y2: + return None # two coordinates are the same. + elif x1 == x2 and y1 > y2: + return UP + elif x1 == x2 and y1 < y2: + return DOWN + elif x1 > x2 and y1 == y2: + return LEFT + elif x1 < x2 and y1 == y2: + return RIGHT + + slope = float(y2 - y1) / float(x2 - x1) + + # Figure out which quadrant the line is going in, and then + # determine the closest direction by calculating the slope + if x2 > x1 and y2 < y1: # up right quadrant + if slope > -0.4142: + return RIGHT # slope is between 0 and 22.5 degrees + elif slope < -2.4142: + return UP # slope is between 67.5 and 90 degrees + else: + return UPRIGHT # slope is between 22.5 and 67.5 degrees + elif x2 > x1 and y2 > y1: # down right quadrant + if slope > 2.4142: + return DOWN + elif slope < 0.4142: + return RIGHT + else: + return DOWNRIGHT + elif x2 < x1 and y2 < y1: # up left quadrant + if slope < 0.4142: + return LEFT + elif slope > 2.4142: + return UP + else: + return UPLEFT + elif x2 < x1 and y2 > y1: # down left quadrant + if slope < -2.4142: + return DOWN + elif slope > -0.4142: + return LEFT + else: + return DOWNLEFT + +def _distance(coord1, coord2): + # Return distance between two points. This is a basic pythagorean theorem calculation. + # coord1 and coord2 are (x, y) integers coordinates. + xdist = coord1[0] - coord2[0] + ydist = coord1[1] - coord2[1] + return sqrt(xdist*xdist + ydist*ydist) diff --git a/setup.py b/setup.py new file mode 100755 index 0000000..c1229bb --- /dev/null +++ b/setup.py @@ -0,0 +1,21 @@ +#!/usr/bin/env python + +# Copyright (C) 2009, Simon Schampijer +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program 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 General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + +from sugar3.activity import bundlebuilder + +bundlebuilder.start() diff --git a/touch.py b/touch.py new file mode 100644 index 0000000..584659d --- /dev/null +++ b/touch.py @@ -0,0 +1,83 @@ +#!/usr/bin/env python +# Copyright (C) 2011, One Laptop Per Child +# Author, Manuel Kaufmann + +import moosegesture + +from gi.repository import Gtk +from gi.repository import Gdk + + +LENGHT = 100 +DIRECTIONS = { + 1: (-1, 1), + 2: (0, 1), + 3: (1, 1), + 4: (-1, 0), + 7: (-1, -1), + 8: (0, -1), + 9: (1, -1), + 6: (1, 0), + } + + +class TouchWidget(Gtk.DrawingArea): + + def __init__(self): + self.touches = {} + self.gesture = [] + + super(TestTouch, self).__init__() + self.set_events(Gdk.EventMask.TOUCH_MASK) + self.connect('draw', self.__draw_cb) + self.connect('event', self.__event_cb) + + def __event_cb(self, widget, event): + if event.type in (Gdk.EventType.TOUCH_BEGIN, + Gdk.EventType.TOUCH_CANCEL, Gdk.EventType.TOUCH_END, + Gdk.EventType.TOUCH_UPDATE): + x = event.touch.x + y = event.touch.y + seq = str(event.touch.sequence) + + if event.type in (Gdk.EventType.TOUCH_BEGIN, + Gdk.EventType.TOUCH_UPDATE): + + if seq in self.touches: + self.touches[seq].append((x, y)) + else: + self.touches[seq] = [(x, y)] + + elif event.type == Gdk.EventType.TOUCH_END: + self.gesture = moosegesture.getGesture(self.touches[seq]) + del self.touches[seq] + self.queue_draw() + + def __draw_cb(self, widget, ctx): + ctx.set_source_rgba(0.3, 0.3, 0.3, 0.7) + allocation = self.get_allocation() + ctx.save() + ctx.set_line_width(10) + ctx.move_to(allocation.width / 2, allocation.height / 2) + + for direction in self.gesture: + x, y = DIRECTIONS[direction] + ctx.rel_line_to(x * LENGHT, y * LENGHT) + + ctx.stroke() + ctx.restore() + self.gesture = [] + + +def main(): + window = Gtk.Window() + test_touch = TouchWidget() + + window.add(test_touch) + window.connect("destroy", Gtk.main_quit) + window.show_all() + window.maximize() + Gtk.main() + +if __name__ == "__main__": + main() -- cgit v0.9.1