source: trunk/src/testing/dim/devices/mouse.py @ 4

############################################################################
#
# DIM - A Direct Interaction Manager for SAGE
# Copyright (C) 2007 Electronic Visualization Laboratory,
# University of Illinois at Chicago
#
# All rights reserved.
# 
# 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 University of Illinois at Chicago 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 THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "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 THE COPYRIGHT OWNER OR
# CONTRIBUTORS 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.
#
# Direct questions, comments etc about SAGE UI to www.evl.uic.edu/cavern/forum
#
# Author: Ratko Jagodic
#        
############################################################################




import device
from globals import *
import time
from threading import Thread


def makeNew(deviceId):
    """ this is how we instantiate the device object from
        the main program that loads this plugin """
    return Mouse(deviceId)


MOVE = 1
CLICK = 2
WHEEL = 3
COLOR = 4

LEFT=1
RIGHT=2
MIDDLE=3


WHEEL_CLICK_TIME = 0.75  # seconds before there is a click event after wheel event


class Mouse(device.Device):
    
    def __init__(self, deviceId):
        device.Device.__init__(self, "mouse", deviceId, needPointer=True)
        
        # current state of the device
        self.x = 0   # position in SAGE coords
        self.y = 0   # position in SAGE coords
        self.clickX = 0  # where the click happened 
        self.clickY = 0  # where the click happened

        self.buttons = {}  #key=BTN_ID, value=True|False
        self.buttons[0] = False
        self.buttons[LEFT] = False
        self.buttons[RIGHT] = False
        self.buttons[MIDDLE] = False
        self.lastBtn = 0

##         self.lastWheelTime = time.time()
##         self.wheelClickThread = Thread(target=self.postWheelUpClick)
##         self.wheelClickThread.start()
##         self.wheeling = False
                

 ##    def postWheelUpClick(self):
##         while doRun():
##             if (time.time() - self.lastWheelTime) > WHEEL_CLICK_TIME and self.wheeling:
##                 forEvt = EVT_ZOOM
##                 self.postEvtClick(self.x, self.y, 4, False, forEvt)
##                 self.wheeling = False

##             time.sleep(0.1)
            

    def onMessage(self, data, firstMsg=False):
        tokens = data.strip().split()
        msgCode = int(tokens[0])

        
        # click
        if msgCode == CLICK:
            btnId = int(tokens[1])
            isDown = bool(int(tokens[2]))
            forEvt = 0
            
            if self.buttons[btnId] != isDown:
                self.buttons[btnId] = isDown
                self.lastBtn = btnId

                if isDown:
                    self.clickX, self.clickY = self.x, self.y
                
                if btnId == LEFT:
                    forEvt = EVT_PAN
                elif btnId == RIGHT:
                    forEvt = EVT_ROTATE
                elif btnId == MIDDLE:
                    forEvt = EVT_ZOOM

                self.postEvtClick(self.x, self.y, btnId, isDown, forEvt)


        elif msgCode == WHEEL:
            pass
##             forEvt = EVT_ZOOM
##             numSteps = -1*int(tokens[1])

##             if (time.time() - self.lastWheelTime) > WHEEL_CLICK_TIME:
##                 self.wheeling = True
##                 self.postEvtClick(self.x, self.y, 4, True, forEvt)
               
##             #self.postEvtAnalog3(self.clickX, self.clickY, self.x, self.y, numSteps*15, 0, 0)
##             self.postEvtAnalog3(self.clickX, self.clickY, numSteps*15, 0, 0)
##             self.lastWheelTime = time.time()

        
            
        elif msgCode == MOVE:
            x = float(tokens[1].strip())
            y = float(tokens[2].strip())
            
            # always convert to SAGE coords first
            x = self.bounds.getX() + int(round(float(x) * self.bounds.getWidth()))
            y = self.bounds.getY() + int(round(float(y) * self.bounds.getHeight()))
            
            x,y = self.smooth(x,y)

            
            dx = dy = 0
            if self.x != x or self.y != y:
                dx = x - self.x ;  self.x = x
                dy = y - self.y ;  self.y = y

                if self.buttons[self.lastBtn]:
                    if self.lastBtn == LEFT:
                        self.postEvtAnalog1(self.clickX, self.clickY, dx, dy, 0)
                    elif self.lastBtn == RIGHT:
                        self.postEvtAnalog2(self.clickX, self.clickY, dx, dy, 0)
                    elif self.lastBtn == MIDDLE:
                        self.postEvtAnalog3(self.clickX, self.clickY, dx, dy, 0)
                else:
                    self.postEvtMove(self.x, self.y, dx, dy)
                    
                # move the pointer
                if self.pointer: self.pointer.movePointer(self.x, self.y)        


        elif msgCode == COLOR:
            #if self.pointer: self.pointer.setColor(tokens[1], tokens[2], tokens[3])
            pass