Touch Skeleton - TestMultiTouch activity

4 files changed, 207 insertions, 0 deletions

diff --git a/Touch/activity.py b/Touch/activity.py
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index 0000000..1245451
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+++ b/Touch/activity.py
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+# Copyright (c) 2012 Bert Freudenberg
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+
+"""
+Activity: TestMultiTouch
+Shows multi-touch events
+"""
+
+from gi.repository import Gtk
+from gi.repository import Gdk
+from random import random
+from math import pi as M_PI
+
+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
+
+class TestMultiTouchActivity(activity.Activity):
+
+    def __init__(self, handle):
+        activity.Activity.__init__(self, handle)
+        self.max_participants = 1
+
+        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()
+
+        # main view
+        touch_area = TouchArea()
+        self.set_canvas(touch_area)
+        touch_area.show()
+
+
+class TouchArea(Gtk.DrawingArea):
+
+    def __init__(self):
+        Gtk.DrawingArea.__init__(self)
+        self.fingers = {}
+        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_UPDATE,
+                Gdk.EventType.TOUCH_CANCEL,
+                Gdk.EventType.TOUCH_END):
+            # sequence is a void ptr object identifying the finger
+            # we make it a string for use as dict key
+            seq = str(event.touch.sequence)
+            if event.type == Gdk.EventType.TOUCH_BEGIN:
+                new_finger = Finger(event)
+                self.fingers[seq] = new_finger
+                self.remove_inactive_fingers(new_finger)
+            else:
+                self.fingers[seq].update(event)
+            self.queue_draw()
+
+    def __draw_cb(self, widget, ctx):
+        alloc = self.get_allocation()
+        ctx.set_source_rgb(1, 1, 1)
+        ctx.paint()
+        for f in self.fingers:
+            self.fingers[f].draw(ctx, alloc.width, alloc.height)
+
+    def remove_inactive_fingers(self, new_finger):
+        for f,old_finger in list(self.fingers.items()):
+            if not old_finger.active:
+                del self.fingers[f]
+                if new_finger.time - old_finger.time < 300:
+                    new_finger.remember(old_finger)
+
+
+class Finger:
+
+    def __init__(self, event):
+        self.trail = [ Point(event.touch.x, event.touch.y) ]
+        self.color = (random(), random(), random())
+        self.time = event.touch.time
+        self.active = True
+        self.other = None
+
+    def update(self, event):
+        self.time = event.touch.time
+        if event.type == Gdk.EventType.TOUCH_UPDATE:
+            self.trail.append( Point(event.touch.x, event.touch.y) )
+        elif event.type == Gdk.EventType.TOUCH_END:
+            self.active = False
+        elif event.type == Gdk.EventType.TOUCH_CANCEL:
+            self.active = False
+            self.color = (1, 0, 0)
+
+    def remember(self, finger):
+        if self.other:
+            finger.remember(self.other)
+        self.other = finger
+
+    def draw(self, ctx, width, height):
+        if self.other:
+            self.other.draw(ctx, width, height)
+        (r, g, b) = self.color
+        ctx.set_source_rgb(r, g, b)
+        self.draw_trail(ctx)
+        if self.active:
+            self.draw_touch(ctx)
+            ctx.set_source_rgb(0.5, 0.5, 0.5)
+            self.draw_crosshair(ctx, width, height)
+
+    def draw_crosshair(self, ctx, width, height):
+        p = self.trail[-1]
+        ctx.set_line_width(1)
+        ctx.move_to(p.x, 0)
+        ctx.line_to(p.x, height)
+        ctx.move_to(0, p.y)
+        ctx.line_to(width, p.y)
+        ctx.stroke()
+
+    def draw_touch(self, ctx):
+        p = self.trail[-1]
+        ctx.set_line_width(10)
+        ctx.arc(p.x, p.y, 30, 0, 2 * M_PI)
+        ctx.stroke()
+
+    def draw_trail(self, ctx):
+        ctx.set_line_width(5)
+        p = self.trail[0]
+        ctx.move_to(p.x, p.y)
+        for p in self.trail:
+            ctx.line_to(p.x, p.y)
+        ctx.stroke()
+
+
+class Point:
+
+    def __init__(self, x, y):
+        self.x = x
+        self.y = y
diff --git a/Touch/activity/activity-testmultitouch.svg b/Touch/activity/activity-testmultitouch.svg
new file mode 100644
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--- /dev/null
+++ b/Touch/activity/activity-testmultitouch.svg
@@ -0,0 +1,9 @@
+<?xml version="1.0" ?><!DOCTYPE svg  PUBLIC '-//W3C//DTD SVG 1.1//EN'  'http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd' [
+	<!ENTITY stroke_color "#010101">
+	<!ENTITY fill_color "#FFFFFF">
+]>
+<svg viewBox="0 0 55 55" xmlns="http://www.w3.org/2000/svg">
+  <path d="M9.263,48.396c0.682,1.152,6.027,0.059,8.246-1.463   c2.102-1.432,3.207-2.596,4.336-2.596c1.133,0,12.54,0.92,20.935-5.715c7.225-5.707,9.773-13.788,4.52-21.437   c-5.252-7.644-13.832-9.08-20.878-8.56C16.806,9.342,4.224,16.91,4.677,28.313c0.264,6.711,3.357,9.143,4.922,10.703   c1.562,1.566,4.545,1.566,2.992,5.588C11.981,46.183,8.753,47.522,9.263,48.396z" fill="&fill_color;" stroke="&stroke_color;" stroke-width="3.5"/>
+  <circle cx="20" cy="25" r="5" fill="&fill_color;" stroke="&stroke_color;" stroke-width="3.5" />
+  <circle cx="35" cy="30" r="5" fill="&fill_color;" stroke="&stroke_color;" stroke-width="3.5" />
+</svg>
diff --git a/Touch/activity/activity.info b/Touch/activity/activity.info
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index 0000000..025c591
--- /dev/null
+++ b/Touch/activity/activity.info
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+[Activity]
+name = TestMultiTouch
+activity_version = 5
+bundle_id = org.sugarlabs.TestMultiTouch
+exec = sugar-activity activity.TestMultiTouchActivity
+icon = activity-testmultitouch
+license = MIT
diff --git a/Touch/setup.py b/Touch/setup.py
new file mode 100755
index 0000000..9a141b3
--- /dev/null
+++ b/Touch/setup.py
@@ -0,0 +1,3 @@
+#!/usr/bin/env python
+from sugar3.activity import bundlebuilder
+bundlebuilder.start()